JP4628844B2 - Wave energy utilization device - Google Patents

Description

  The present invention includes a main body having an inclined surface inclined upward from the peripheral edge on the water surface side toward the central portion, and an opening in the central portion, and radially extending from the central portion of the main body toward the peripheral edge on the inclined surface. A wave energy utilization device that uses water that is provided with a converging dam for converging waves, floats the main body on the water surface, and uses water that enters from the center as the waves move. It relates to what generates electricity.

  The global warming problem and various environmental destruction problems have been screamed in the past, but these problems have become increasingly serious in recent years. These are also closely related to energy issues. There are quantitative problems of energy resources such as oil peak problem and fossil energy resource depletion problem, and energy and resource conservation are global issues.

  In addition, the use of energy is directly related to the problem of environmental destruction, and there is a problem of carbon dioxide emission due to energy consumption that contributes to global warming, a problem of radioactivity due to the use of nuclear power, and others. Problems related to the use of nuclear power include radiation leakage accidents that can occur with the aging of nuclear reactors such as nuclear power plants. Radioactivity has a great adverse effect on the ecological environment, and when a radioactivity leakage accident occurs, there is a risk that damage to the living environment of local residents will be serious.

  In addition, it is possible to live on uninhabited islands where people cannot live, such as the Senkaku Islands, Okinotorishima, Takeshima, Ogasawara Islands, etc. There has been a demand for a device that effectively uses wave energy resources in order to improve the lives and conveniences of islanders by saving transportation costs such as oil and energy resources, expanding tourism, and the fishing industry.

  In addition, in aquaculture farms, it is necessary to improve the seawater exchange to solve problems such as pollution and oxygen shortage in order to increase production. For this purpose, aquaculture facilities must be installed offshore deep in the water. However, since there is a big wave in such a sea area, a device capable of exchanging waves and generating power and exchanging seawater has been desired.

  Next, offshore artificial islands, thermal power, nuclear power plants, bases, airfields, port construction, etc., because the open sea is a big wave, a temporary wave breaker that can be manufactured safely and inexpensively is required for these constructions. It was.

  Under such circumstances, the effective use of clean natural energy that does not burden the global environment, such as wind power and wave power in the ocean, dams, lakes, and the like, and solar is spreading.

  Examples of utilizing natural energy include a wave energy conversion device, for example, a wave extinguishing device, in which the use of wave power is put into practical use. There are also wave energy conversion devices such as wave power generation. Furthermore, there is a wave power pump that supplies water with wave energy (Patent Document 1).

Japanese Patent Publication No. 6-72594

  However, once installed in the sea, the wave-dissipating device must be operated only for the purpose of wave-dissipating in the case of large waves and small waves. Due to the high cost, there is a problem that the ratio of cost effectiveness is very high.

  Further, wave energy conversion devices such as wave power generation are very inefficient devices for generating electric power by converting wave energy into air energy.

  Also in the wave pump, as disclosed in Patent Document 1, the amount of water that can be sent by a single unit is small.

  The present invention has been made paying attention to such problems of the conventional technology, and an object of the present invention is to provide a wave energy utilization device that can efficiently generate power using wave energy.

  Moreover, an object of this invention is to provide the wave energy utilization apparatus which can send water in large quantities using the energy of a wave.

  The gist of the present invention for achieving the object lies in the inventions of the following items.

[1] A main body (10, 10A, 10B) having an inclined surface (3b) inclined upward from the peripheral edge on the lower end side of the water surface toward the center, and having an opening (3a) in the center, 10, 10 </ b> A, 10 </ b> B) Converging dams for converging waves, which are erected on the inclined surface (3 b) from the center and radially on the inclined surface (3 b) toward the peripheral edge on the lower end side ( 11), and the main body (10, 10A, 10B) is floated on the water surface (S) so that the central portion comes out on the water surface (S), and water enters from the central portion along with the movement of waves. In the wave energy utilization device (1, 1A, 1B) using
A pool (6) provided below the opening (3a) and having a communication portion (15) communicating with the underwater side, a water wheel (16) disposed in the communication portion (15), and the water wheel (16) A generator (18) that generates power in conjunction with the rotation of the
The rotating shaft (17) of the water wheel (16) is disposed on an extension line of the converging dam (11),
The level of water entering the pool (6) from the opening (3a) by going up the inclined surface (3b) divided by the converging dam (11) and the outside of the main body (10, 10A, 10B) A wave energy utilization device (1, 1A, 1B) characterized in that the water turbine (16) is rotated by a water level difference from the water level to cause the generator (18) to generate power.

[2] A main body (10, 10A, 10B) having an inclined surface (3b) inclined upward from the peripheral edge on the lower end side of the water surface toward the center, and having an opening (3a) in the center, 10, 10A.10B) Converging dams for converging waves, which are erected radially on the inclined surface (3b) from the central portion toward the peripheral edge on the lower end side on the inclined surface (3b). 11), and the main body (10, 10A, 10B) is floated on the water surface (S) so that the central portion comes out on the water surface (S), and water enters from the central portion along with the movement of waves. In the wave energy utilization device (1, 1A, 1B) using
A pool (6) provided below the opening (3a) and having a communication portion (15) communicating with the underwater side, a water wheel (16) disposed in the communication portion (15), and the water wheel (16) A generator (18) that generates power in conjunction with the rotation of the main body (10), and a skirt (5) that can be lifted around the periphery of the main body (10, 10A, 10B).
The level of water entering the pool (6) from the opening (3a) by going up the inclined surface (3b) divided by the converging dam (11) and the outside of the main body (10, 10A, 10B) A wave energy utilization device (1, 1A, 1B) characterized in that the water turbine (16) is rotated by a water level difference from the water level to cause the generator (18) to generate power.
[ 3 ] A main body (10, 10A, 10B) having an inclined surface (3b) inclined upward from the peripheral edge on the lower end side of the water surface toward the center, and having an opening (3a) in the center, 10, 10 </ b> A, 10 </ b> B) Converging dams for converging waves, which are erected on the inclined surface (3 b) from the center and radially on the inclined surface (3 b) toward the peripheral edge on the lower end side ( 11), and the main body (10, 10A, 10B) is floated on the water surface (S) so that the central portion comes out on the water surface (S), and water enters from the central portion along with the movement of waves. In the wave energy utilization device (1, 1A, 1B) using
The upper storage chamber (6a) and the lower storage chamber (6b, 6c) defined vertically below the opening (3a), and a communication portion for communicating the upper and lower storage chambers (6a, 6b, 6c) A pool (6) having (15), a water turbine (16) disposed in the communication portion (15), a generator (18) that generates power in conjunction with the water turbine (16), and the lower housing chamber ( 6b, 6c) for discharging water from the main body (10, 10A, 10B), a water discharge part (22, 31) from the lower housing chamber (6b, 6c) to the inclined surface (3b), A check valve (24, 34, 36) for blocking the water discharge part (22, 31) and preventing water from entering the lower housing chamber (6b, 6c) from the outside of the main body (10, 10A, 10B); With
The water level and the main body (10) that has moved up the inclined surface (3b) partitioned by the converging dam (11) and entered the upper storage chamber (6a) of the pool (6) from the opening (3a). , 10A, 10B) The water turbine (16) is rotated by the difference in water level from the external water level to cause the generator (18) to generate power, and the water in the lower housing chambers (6b, 6c) The wave energy utilization device (1, 1A, 1B) is characterized in that water is discharged from the water discharge portion (22, 31) to the outside of the main body (10, 10A, 10B) due to the difference.

[ 4 ] The wave energy utilization device (1, 2) according to [ 3 ], wherein the check valve (34) is provided at a boundary between the lower accommodation chamber (6c) and the water discharge section (31). 1A, 1B).

[5] The check valve (24, 36) is characterized in that the provided outlet water of the inclined surface that is water discharge from water discharge portion (22 and 31) (3b) (23, 35) [3 ] Or the wave energy utilization apparatus (1, 1A, 1B) described in [ 4 ].

[ 6 ] A main body (10C) having an inclined surface (3b) inclined upward from the peripheral edge on the lower end side of the water surface toward the center, and having an opening (3a) in the center, and the main body (10C) A converging ridge (11) for converging waves, which is provided on the inclined surface (3b) so as to radiate from the central portion toward the peripheral edge on the lower end side from the central portion. In the wave energy utilization device (1C) that floats the main body (10C) on the water surface (S) so that the portion comes out on the water surface (S), and uses the water that enters from the central portion along with the movement of the wave,
A pool (6) composed of an upper storage chamber (6a) and a lower storage chamber (6b) defined vertically below the opening (3a) and a lower storage chamber (6b) of the pool (6) A water intake pipe (48) for taking water from the water intake pipe (48), a water discharge pipe (49) for discharging water taken from the water intake pipe (48) into the lower housing chamber (6b) to the outside of the main body (10C); Water supply means for taking water from the water pipe (48) and sending water to the water discharge pipe (49);
The water supply means includes a first water wheel (43) disposed in the upper housing chamber (6a) and a second water wheel rotating in conjunction with the first water wheel (43) disposed in the lower housing chamber (6b). (46)
The water level of water entering the pool (6) from the opening (3a) by going up the inclined surface (3b) partitioned by the converging dam (11) and the water level outside the main body (10C) The first water turbine (43) is rotated by the water level difference between the first water wheel and the second water wheel (46) rotating in conjunction with the rotation of the first water wheel (43) from the intake pipe (48) to the lower receiving chamber. The wave energy utilization device (1C), wherein the water taken into (6b) is sent to the water discharge pipe (49) and discharged outside the main body (10C).

[ 7 ] The upper storage chamber (6a) of the pool (6) has a first communication portion (50) communicating with the underwater side,
The lower storage chamber (6b) of the pool (6) has a second communication part (47) communicating with the water discharge pipe (49),
The first water turbine (43) is disposed in the first communication portion (50) of the upper accommodation chamber (6a),
The second water turbine (46) is disposed in the second communication portion (47) of the lower housing chamber (6b),
The water obtained by rotating the first water turbine (43) is discharged from the first communication part (50) to the underwater side by the first water wheel (43), and the lower housing is accommodated by the rotation of the second water wheel (46). The water taken into the chamber (6b) is fed into the water discharge pipe (49) from the second communication part (47) by the second water wheel (46) and discharged outside the main body (10C). Wave energy utilization apparatus (1C) as described in [ 6 ] characterized by these.

[ 8 ] A main body (10D) having an inclined surface (3b) inclined upward from the peripheral edge at the lower end of the water surface toward the center, and having an opening (3a) in the center, and the main body (10D) A converging ridge (11) for converging waves, which is provided on the inclined surface (3b) so as to radiate from the central portion toward the peripheral edge on the lower end side from the central portion. In the wave energy utilization device (1D) that floats the main body (10D) on the water surface (S) so that the portion comes out on the water surface (S), and uses the surface water entering from the center with the movement of the wave ,
A pool (6) provided below the opening (3a) and having a communicating part (15) communicating with the underwater side, and provided between the surface water and deep water provided below the pool (6) A power generation chamber (55) in which a temperature difference power generation device (100) that generates power using a temperature difference is arranged, and cold water at a deeper temperature lower than the surface water that is circulated in the temperature difference power generation device (100). A water intake pipe (57) for taking in water, water supply means for taking cold water from the water intake pipe (57) and feeding it into the temperature difference power generation apparatus (100), and cold water fed by the water supply means for the temperature difference power generation apparatus A cold water circulation means that circulates to (100) and then discharges to the outside of the main body (10D); and surface water from the pool (6) circulates to the temperature difference power generation device (100) and then the main body (10D). Surface water circulation means for discharging to the outside, Provided,
The water supply means rotates in conjunction with the first water turbine (160) disposed in the communication part (15) of the pool (6) and the first water wheel (160) disposed on the intake pipe (57) side. A second water turbine (56)
The water level of the surface water that entered the pool (6) from the opening (3a) by going up the inclined surface (3b) partitioned by the converging dam (11) and the water level outside the main body (10D) The first water turbine (160) is rotated by the difference in water level and the surface water circulation means is circulated, and the second water turbine (56) rotating in conjunction with the rotation of the first water turbine (160) is the intake pipe. The temperature difference power generation device (100) generates electricity from the temperature difference between the surface water flowing through the surface water circulation means and the cold water flowing through the cold water circulation means. Wave energy utilization device (1D) characterized by

[ 9 ] The temperature difference power generation device (100) includes the condenser (59) for condensing the working fluid, the evaporator (63) for evaporating the working fluid condensed by the condenser (59), and the condensation. The pump (71) for sending the working fluid to the evaporator (63), the turbine (72) rotated by the working fluid evaporated by the evaporator (63), and power generation in conjunction with the rotation of the turbine (72) Generator (74), and a piping structure (68, 70) in which the working fluid circulates through the condenser (59), the pump (71), the evaporator (63), and the turbine (72). 73, 75), and
The cold water circulation means has a circulation pipe (58, 60) that communicates from the intake pipe (57) side to the outside of the main body (10D) via the condenser (59), and the surface water circulation means The circulation pipes (64a, 64b) communicating from the pool (6) side to the outside of the main body (10D) via the evaporator (63),
The working fluid condensed by the condenser (59) is vaporized by the evaporator (63), and the turbine (72) is rotated before the vaporized working fluid returns to the condenser (59). The wave energy utilization device (1D) according to [ 8 ], wherein the generator (74) generates electric power.

[ 10 ] [1], [2], [3], [4], characterized in that a control valve (77) for controlling the amount of water passing through the water turbine (16, 43, 160) is provided. The wave energy utilization device (1, 1A, 1B, 1C, 1D) according to [5], [6], [7] , [8] or [ 9 ].

[1 1 ]
[1] , [ 3], [4], [5, characterized in that the main body (10, 10A, 10B, 10C, 10D) includes a skirt (5) that can be lifted around the periphery. ], [6], [7], [8] , [9] and the wave energy utilization apparatus described in [ 10 ] (1, 1A, 1B, 1C, 1D).

  The present invention operates as follows.

  The wave energy utilization device (1, 1A, 1B) according to [1] to [4], the main body (10, 10A, 10B) is moored from the water bottom (sea floor) (SG) by the mooring device (2), Float on the water surface (S). The wave (W) that has traveled toward the wave energy utilization device (1, 1A, 1B) rises to the inclined surface (3b) of the inclined portion (3) partitioned by the converging dam (11), and the main body (10, 10A, 10B). Since the wave (W) is converged by the convergent embankment (11) as it approaches the center, the wave rising on the inclined surface (3b) is subjected to the convergence effect, and the wave height increases and the pool ( 6) Enter.

  The water that has entered the pool (6) is caused by the water level difference between the water level that has run up the inclined surface (3b) of the inclined portion (3) and the water level outside the main body (10, 10A, 10B). 6) The water turbine (16) in the communication part (15) provided in the bottom part (8) or the partition plate (19) partitioning the pool (6) is rotated to rotate the water discharge hose (25) or the water discharge part (22, 31). The water is discharged to the outside of the wave energy utilization device (1, 1A, 1B).

  When the water turbine (16) rotates, the generator (18) connected to the rotating shaft (17) generates power in conjunction with it. By repeating the above generation of electricity, water circulation is promoted, and wave energy conversion and wave convergence, wave action, wave breaking phenomenon, etc. on the inclined surface (3b) of the inclined portion (3) are repeated. Therefore, the wave energy is dissipated on the rear side of the wave energy utilization device (1, 1A, 1B). The water discharge hose (25) is preferably suspended close to the sea floor (SG). However, when the wave energy utilization device (1, 1A, 1B) also needs to be extinguished, the water discharge hose (25) is used. Bending and penetrating the side wall of the skirt (5) to discharge water to the side of the wave energy utilization device (1, 1A, 1B) can further enhance the wave-dissipating effect.

  The main body (10A, 10B) is provided with a water discharge part (22, 31) for discharging the water in the pool (6), and the water discharge part (22, 31) is closed or opened by the check valve (24, 34, 36). Intrusion of water into the pool (6) from the outside of the main body (10A, 10B) can be prevented without hindering water discharge from the pool (6).

  In the wave energy utilization device (1C) according to [5] and [6], the water that has entered the pool (6) from the opening (3a) is disposed in the upper storage chamber (6a) of the pool (6). When the water wheel (43) is rotated, the second water wheel (46) disposed in the lower housing chamber (6b) rotates in conjunction with the water once taken into the lower housing chamber (6b) from the water intake pipe (48). Water is discharged from the water discharge pipe (49) to the outside of the main body (10C) through the second communication part (47). Thereby, water in a desired region can be discharged at a desired location.

  In the wave energy utilization device (1D) according to [7] and [8], the surface water that has gone up the inclined surface (3b) and entered the pool (6) rotates the first water turbine (160). Then, the second water turbine (56) interlocked with the rotation of the first water turbine (160) is rotated to draw cold water having a relatively low temperature from the vicinity of the sea floor (SG) through the water pipe (57). This cold water is supplied to the condenser (59) of the temperature difference power generation device (100). The condenser (59) condenses and liquefies the working fluid. The liquefied working fluid is sent to the evaporator (63) by the pump (71).

  The evaporator (63) is supplied with high-temperature surface water obtained by rotating the first water turbine (160), and vaporizes the condensed working fluid. The vaporized working fluid is sent to the turbine (72) to rotate the turbine (72). The generator (74) is driven by the rotation of the turbine (72) to generate electricity.

  According to the wave energy utilization apparatus concerning this invention, a water turbine can be rotated using the water level difference of the water which went up the inclined surface and entered the pool. By transmitting the rotational force of the water turbine to the generator to drive the generator, it is possible to generate power efficiently using wave energy that is natural energy. Moreover, the wave which goes up the slope of an inclination part, and the wave which passes the mesh | network of a skirt can be quenched.

  In addition, a large amount of water can be actively sent by using the rotational force of the water wheel for pumping water. This mass water supply and the power generation can be achieved simultaneously.

  Also provided with a temperature difference power generation device, pumped cold water is supplied to the condenser of the temperature difference power generation device, and high temperature surface water entering the pool is supplied to the evaporator of the temperature difference power generation device. Can generate electricity.

Hereinafter, various preferred embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a first embodiment of the present invention.
FIG. 1 is a longitudinal sectional view showing the internal structure of the wave energy utilization device according to the first embodiment of the present invention, and FIG. 2 is a plan view of the wave energy utilization device of FIG.
The wave energy utilization device 1 (hereinafter also simply referred to as the device 1) is installed so as to float in a water area where waves are generated, and converts the wave energy to use or quench the wave.

  As shown in FIG. 1, in the wave energy utilization device 1 of the present invention, the main body 10 is moored by the mooring device 2 from the water bottom SG and floats on the water surface S. The main body 10 floating on the water surface S is adjusted in buoyancy so that the center part protrudes slightly above the water surface S. A plate-like inclined portion 3 is formed so as to form an inclined surface 3b inclined upward from the lower edge on the lower side of the water surface (periphery on the lower surface side of the water surface) upward.

  As shown in FIG. 2, the planar shape of the entire inclined portion 3 has a substantially uniform polygonal shape, with the peripheral edge on the lower end side being substantially equal in length. The planar shape may be a quadrangle, a circle, an ellipse, or the like.

  An opening 3 a is formed at substantially the center of the wave energy utilization device 1, that is, at the center of the inclined portion 3. Plate-shaped converging ridges 11 are erected radially from the periphery of the opening 3a on the inclined surface 3b toward the lower end side periphery of the inclined portion 3 at substantially equal angles. A buoyancy chamber 12 is formed inside the converging dam 11. However, the buoyancy chamber 12 is not always necessary.

  The peripheral edge on the lower end side of the inclined portion 3 is bent to form a side wall 4. The side wall 4 also serves as a weight for improving the swaying property due to waves and the like, and is made of a relatively solid material capable of gaining weight, such as a thick steel plate or steel material. Thereby, since the side wall 4 plays the role which makes the position of the synthetic gravity center of the whole apparatus low, the stability of the whole apparatus 1 can be maintained. The side wall 4 is disposed so as to be surrounded by a skirt 5 described later.

FIG. 3 is an enlarged plan view showing a part of the lower end side periphery of the main body in an enlarged manner.
A guide rail 82 is provided at the most distal portion of the converging dam 11 standing on the inclined surface 3 b of the inclined portion 3. The guide rail 82 is provided with a mount 14 (see FIG. 1), and the balance floating body 13 is mounted on the mount 14. The balance floating body 13 is attached to the mount 14 by, for example, fastening with a band or rope, bolt fastening, or welding. The balance floating body 13 is attached over the entire periphery of the lower end side periphery of the inclined portion 3.

  About half of the balance floating body 13 is set on the water surface S, and the other half is set so as to be submerged under the water surface S. As a result, even if a large wave or the like occurs in the installation water area, the entire apparatus 1 is not easily toppled, and at the same time, it plays the role of a shock absorber in the event of a collision with a ship or the like. In addition, this balance floating body 13 is not necessarily required.

  As shown in FIGS. 3 and 4, a lattice 83 of the skirt 5 is detachably mounted between the guide rail 82 and the side wall 4. The skirt 5 is attached so as to surround the periphery of the side wall 4. The skirt 5 is movable or detachable, and can be lifted upward or detached when the wave energy utilization apparatus 1 is transported.

  A suspension fitting 85 is provided on the upper edge of the skirt 5 and is hung on a hook (not shown) provided on the side wall 4. The lattice 83 of the skirt 5 can be moved up and down while being guided by guide rails 82 facing each other. The skirt 5 is provided with a stopper and a fastening bracket 84 (not shown) so that the lattice 83 does not fall off when sliding on the guide rail 82. The lattice 83 is composed of a framework assembled in a lattice shape and a mesh-like wire mesh or plastic mesh covering each lattice.

  The skirt 5 is suspended in the water from the side wall 4 of the main body 10 during operation while floating on the water surface S. By suspending the skirt 5, it is possible to improve the stability of the main body 10 by suppressing shaking, vibration, inclination, and the like due to waves. Moreover, since the wave which passes the mesh | network of the skirt 5 can be quenched, the wave-dissipating effect by the whole apparatus 1 etc. can be heightened. As an example of the wave extinction by the apparatus 1, there is a wave extinction formed by repetition of wave convergence, wave action, wave breaking phenomenon and the like that travels up the inclined surface 3b of the inclined portion 3 on the wave coming side.

  The skirt 5 has a mesh shape as described above, and it is possible to prevent the movement of wave water particles from entering the wave energy utilization device 1 and to improve water circulation. It is desirable to use a skirt 5 that can reduce resistance such as tide, ocean current, and water flow as much as possible. Moreover, in order to improve the stability of the attitude | position of the wave energy utilization apparatus 1, you may provide the weight 5b under the skirt 5 (refer FIG. 1).

  Inside the skirt 5 is disposed a pool 6 positioned below an opening 3 a provided at the center of the inclined portion 3 of the main body 10. The pool 6 is formed by a pool side wall 7 extending downward from the vicinity of the periphery of the opening 3a and a pool bottom 8 continuing from the pool side wall 7, and is disposed substantially concentrically with the opening 3a. It is preferable that the pool bottom portion 8 has a conical shape as viewed from below to reduce the wave lifting pressure from below the wave energy utilization device 1.

  The pool bottom portion 8 is provided with a communication portion 15 having a through hole 15a, and a water discharge hose 25 is attached to the communication portion 15. Since the water discharge hose 25 incorporates an aggregate such as a suction hose, it is relatively less susceptible to the influence of waves outside the device 1. The water discharge hose 25 extends to the vicinity of the seabed SG, whereby the pool 6 communicates with the underwater side. The water discharge hose 25 can be further enhanced in the wave-dissipating effect by bending from the middle and penetrating the side wall of the skirt 5 to discharge water to the side of the device 1. A water wheel 16 is disposed in the communication portion 15.

  The rotating shaft 17 of the water turbine 16 extends upward in the axial direction of the communication portion 15 and is connected to the generator 18 on the water surface. The rotational force of the water turbine 16 is transmitted to the generator 18 through the rotating shaft 17. The water that has entered the through-hole 15 a and has rotated the water turbine 16 is discharged to the outside of the wave energy utilization device 1 through the water discharge hose 25.

  A buoyancy chamber 9 surrounding the pool side wall 7 is formed outside the pool side wall 7 of the pool 6. The buoyancy chamber 9 is formed as a space that can be sealed by the pool side wall 7, the lower surface of the inclined portion 3, and the bottom portion 9a. The buoyancy chamber 9 is provided with unillustrated nozzles, vent pipes, pump devices, and apparatus for controlling the rise and fall of the device depending on the size of the waves.

  Therefore, the wave energy utilization device 1 includes a weight, such as a peripheral edge of the inclined portion 3 located below the device 1 in the water, a side wall 4, a skirt 5, and a weight 5b, and a balance floating body 13 provided on the water surface S. The position of the buoyancy center and the center of gravity is determined from the relationship between the buoyancy chamber 9 provided near the center of the main body 10 and relatively close to the water surface S, and the buoyancy chamber 12 located almost on the water surface S in the converging dam Is calculated so that the entire device 1 is not toppled over in consideration of the principle of getting up and spilling and the principle of spilling.

Next, the operation will be described.
The wave energy utilization device 1 is a floating object floating on the water surface S, and at the same time, the inclined surface 3b of the inclined portion 3 can be said to be a floating reed having the same action as a reed, and is installed in a water area where waves are generated. The The planar shape of the wave energy utilization device 1 is such that the inclined portion 3 forms a uniform ring-shaped polygon, so that the same operation can be performed regardless of which direction the wave comes from, and almost the same effect can be obtained. So there is no specific installation direction.

  For example, if the wave W comes from the left direction on the paper surface of FIG. 1 toward the installed wave energy utilization device 1, first, the wave W hits the balance floating body 13, or the inclined surface 3b of the inclined portion 3 directly, that is, Go up to the trap. As described above, the balance floating body 13 is arranged on the extension line of the converging dam 11 while maintaining a predetermined interval, so that the wave W hitting the balance floating body 13 is divided on both sides of the balance floating body 13 and passes over the side wall 4. Then, it goes up to the inclined surface 3 b of the inclined portion 3 partitioned by the converging dam 11.

  The waves refract the respective inclined surfaces 3b partitioned by the respective converging ridges 11 at respective angles toward the center and rise with respective time differences. Since the inclined surface 3b is converged by the converging ridge 11 as it goes to the central portion of the main body 10, the wave W going up the inclined surface 3b is converged by the phenomenon of the converging action that is drawn up and the wave height is large. Become. Waves finally wave over the apex of the inclined part 3 while entering the pool 6 through the opening 3a while repeating wave convergence, undulation action, wave breaking phenomenon, etc. on the inclined surface 3b of the inclined part 3 in each ridge.

  Therefore, there is a time difference at the time of incidence between the wave W entering the inclined surface 3b in front of the floating levee and the wave W entering the adjacent inclined surface 3b with the converging ridge 11 as a boundary with respect to the traveling direction of the wave. At the same time, since the incident angle (refractive angle) of the wave W is different, a time difference occurs during overtopping.

  If the operation of the wave energy utilization device 1 is divided at a certain time and the flow of water between them is seen, a clockwise flow and a counterclockwise flow occur at a certain uniform angular velocity at the same time as the clock hands rotate. It will enter into the pool 6 by such a phenomenon. Such a phenomenon can be regarded as a smoothed input to some extent.

  As a result, even if a wave is traveling in a certain direction as a whole, like a small island floating in the ocean, there is some direction if you stand in the island and look at the beach of the island itself. , Waves rush to the small island from all around. For example, even on the lower side, which is completely opposite to the traveling direction of the ocean waves, the waves are somewhat small, but from that side, they travel around the small islands and return to the coastline due to phenomena such as return waves. I'll come to you. Using this phenomenon in the apparatus 1 of the present invention, even if the wave is incident from any direction and in any situation, the wave is incident on the inclined surface 3b of the inclined portion 3 efficiently divided by the converging ridge 11. In other words, it is possible to effectively take the waves into the floating tub and successively overwhelm the waves in the pool 6, that is, into the upper storage chamber 6a of the pool 6.

  The water that has entered the pool 6 has a bottom 8 of the pool 6 due to a water level difference between the water level at the upstream of the inclined surface 3 b and the water level outside the main body 10, that is, due to the head difference of the inclined portion 3. The water wheel 16 in the communication part 15 provided in the above is rotated and discharged through the water discharge hose 25 to the outside of the wave energy utilization device 1. In this case, the motion of the water particles having a substantially circular shape in the wave outside the apparatus 1 is broken by using the inclined surface 3b and simultaneously converted into a water head difference by the inclined surface 3b.

  Since the water turbine 16 rotates together with the rotating shaft 17, the generator 18 connected to the rotating shaft 17 generates power in conjunction with the rotation of the water turbine 16. By repeating the above, the wave energy is converted into electric energy generated by the generator 18, and the circulation of water is promoted, so that the consumption of wave energy and the action by the inclined surface 3b of the inclined portion 3 are finally achieved. Thus, the rear side of the device 1 is quenched.

  The underwater skirt 5 destroys the motion of the water particles when the wave water particles pass through the mesh of the skirt 5, and suppresses the lifting pressure by the waves to reduce the vertical movement of the wave energy utilization device 1. At the same time, the stability of the posture of the entire apparatus 1 due to the weight of the skirt 5 is improved.

  Thus, according to the wave energy utilization apparatus 1 concerning this Embodiment, it can produce electric power using the energy of a wave.

  Also, by sending oxygen-rich surface water on the surface of the water to the lower layers of the water, it is possible to control anoxic water mass in aquaculture farms, harbors, closed water areas, etc. by vertical exchange of upper and lower water and seawater exchange. Water purification will be possible.

  Moreover, the wave-dissipating effect can be remarkably enhanced by destroying the motion of water particles in the wave. Therefore, it can be used in civil engineering construction fields such as offshore artificial islands, harbors, airports, power plant construction, and other civil engineering construction fields, as well as in marine development.

Next, a second embodiment will be described with reference to FIGS.
In addition, the same code | symbol is attached | subjected to the site | part same as 1st Embodiment, and the overlapping description is abbreviate | omitted.
FIG. 5 is a longitudinal sectional view of a wave energy utilization device according to the second embodiment of the present invention. FIG. 6 is a plan view of the wave energy utilization device of FIG. In the present embodiment, there is no water discharge hose 25 that communicates the water rotated by the water turbine 16 to the underwater side, and the lower storage chamber 6b that stores the water rotated by the water turbine 16 and the inclination of the inclined portion 3 from the lower storage chamber 6b. A water discharge path 22 (water discharge section) that leads to the surface 3b is provided, and water is discharged from the water discharge path 22 to the outside of the main body 10A.

  The external shape on the plane of the main body 10A of the wave energy utilization device 1A according to the present embodiment is substantially a regular polygon, similar to the external shape of the wave energy utilization device 1 according to the first embodiment. In the main body 10A, the converging dam 11 provided on the opening 3a and the inclined surface 3b of the inclined portion 3 is the same as that of the wave energy utilization apparatus 1 according to the first embodiment.

  The wave energy utilization apparatus 1A according to the present embodiment includes an upper storage chamber 6a and a lower storage chamber 6b in which a pool 6 provided below an opening 3a in the center of a main body 10A is defined in two upper and lower stages. It has become. The upper storage chamber 6 a and the lower storage chamber 6 b are partitioned by a partition plate 19. A buoyancy chamber 9 is formed so as to surround the outer periphery of the upper storage chamber 6a.

  A drain hole 21 for allowing water to flow from the lower storage chamber 6b to the discharge channel 22 is formed in the lower storage chamber 6b of the pool side wall 7, and the water flowing through the discharge channel 22 is supplied to the inclined surface 3b. A water discharge hole 23 for discharging water to the outside of the main body 10A is formed. These holes 21 and 23 are connected by the water discharge path 22 (water discharge part). The water discharge path 22 is formed to widen from the drainage hole 21 on the lower housing chamber 6b side to the water discharge hole 23 on the inclined surface 3b side, with the cross-sectional area expanding. The inclined surface 3b is provided with a check valve 24 for preventing external water from entering the water discharge hole 23. Such holes 21, 23, the water discharge channel 22, and the check valve 24 are configured in two stages for each inclined surface 3 b divided by the converging bank 11. The holes 21 and 23, the water discharge passage 22 and the check valve 24 are not limited to two sets for each inclined surface 3b, but may be one set or three or more sets.

  The partition plate 19 of the pool 6 is provided with two communication portions 15 each having a through hole 15a, and communicates the upper storage chamber 6a and the lower storage chamber 6b. A water turbine 16 is disposed in the communication portion 15. In addition, the number of the communication parts 15 does not need to be limited to two.

FIG. 7 is an enlarged view showing the communication portion 15 in which the water turbine 16 is disposed and the vicinity thereof. FIG. 8 is a plan view showing the vicinity of the water amount control valve 77 of FIG.
As shown in FIG. 7, a cylindrical casing 76 in which the water turbine 16 is accommodated is fixed in the through hole 15 a of the communication portion 15. The casing 76 has a separation portion 76 a at a lower end portion below the water turbine 16, and a water amount control valve capable of opening and closing the lower end portion of the casing 76 by entering and exiting the separation portion 76 a from a direction intersecting the axial direction of the casing 76. 77 (control valve) is provided.

  The water amount control valve 77 can be rotated around a rotation shaft 80 disposed in the vicinity of the communication portion 15. The water amount control valve 77 has a diameter larger than the diameter of the casing 76, a large diameter portion 77 a capable of closing the casing 76, and an arm extending from the large diameter portion 77 a and having an end fixed to the rotary shaft 80. 77b. A valve seat 78 that guides the operation of the water amount control valve 77 is provided outside the casing 76 so as to sandwich the large-diameter portion 77a from above and below. The valve seat 78 guides the water amount control valve 77 over the entire movable range of the water amount control valve 77, but the portion intersecting with the casing 76 passes therethrough.

  The valve seat 78 is supported so as to be sandwiched between a plurality of stays 79. As shown in FIG. 8, the stay 79 supports the peripheral portion of the valve seat 78 at a plurality of locations.

  The rotating shaft 80 of the water amount control valve 77 extends to the upper housing chamber 6a side through a bearing 81 firmly fixed to the partition plate 19. The rotation of the bearing 81 causes the water amount control valve 77 to rotate, so that the communication portion 15 can be closed at a position where the center of the large diameter portion 77a is at the point X on the central axis of the casing 76, and the center of the large diameter portion 77a is When the valve seat 78 is at the point Y, the communication portion 15 is completely opened, and the water discharged from the water turbine 16 can flow from the upper storage chamber 6a to the lower storage chamber 6b. An automatic control device (not shown) that controls the opening and closing of the water amount control valve 77 by rotating the rotary shaft 80 is disposed in the upper part of the device 1A. The amount of water that passes through the communication portion 15 can be controlled by the water amount control valve 77.

  As shown in FIG. 5, when there is a wave peak on the left side of the center line of the main body 10A on the paper surface, the left check valve 24 is closed. On the other hand, there is a wave trough on the right side of the main body 10A, the check valve 24 is opened, and the water in the lower housing chamber 6b is discharged to the outside.

Next, the operation will be described.
First, on the water surface S, the wave entering the apparatus from the outside of the wave energy utilization apparatus 1A is guided to the converging dam 11, and the wave height is increased by the phenomenon of the converging action such that the wave height is increased. Go up on surface 3b. The waves overwhelm from the opening 3a at the apex of the main body 10A and enter the upper storage chamber 6a of the pool 6 while expressing the convergence of waves, breaking waves, wave action, etc. on the inclined surface 3b, that is, the floating wall.

  The water that has entered the upper storage chamber 6a rotates the water turbine 16 provided in the casing 76 disposed in the communication portion 15 in the through hole 15a opened in the partition plate 19 of the pool 6 to rotate the pool 6 It flows into the lower storage chamber 6b. When the water turbine 16 rotates, the generator 18 generates power in conjunction with the rotating shaft 17 of the water turbine 16 as described in the first embodiment.

  The water that has flowed into the lower storage chamber 6b passes through the water discharge channel 22 toward the inclined surface 3b on the side where the water surface S outside the main body 10A is low, that is, the side where the wave troughs are, and pushes the check valve 24 open. The water is discharged from the water discharge hole 23 to the outside of the main body 10A. At this time, in the vicinity of the check valve 24, since it is a wave trough, the movement of water particles flows in the direction of pulling up water from the wave trough to the mountain, so Since the back pressure of the check valve 24 can be reduced at the same time that the suction action is generated in the water, even when the check valve 24 is submerged in water, the water is efficiently discharged from the main body 10A to the outside. can do.

  At this time, when the water level of the wave further falls below the check valve 24, that is, when the same state as the state shown in FIG. Also, since the discharged water is discharged onto the water surface S with no load, the water can be discharged from the lower housing chamber 6b very efficiently. Therefore, the apparatus 1A according to the present invention ensures a significant water level difference between the water level rise due to the wave rising on the inclined surface 3b and the water level drop due to the suction action of water particles in the wave trough. can do. On the other hand, the check valve 24 on the side where there is a wave peak has many portions that are covered with water, and the movement of water particles acts in a direction to close (press) the check valve 24, so that the pressure is increased. Thus, the check valve 24 is firmly closed.

  Next, the action of releasing water in the wave valley often occurs on the left side of the main body 10A, that is, on the entire circumference of the apparatus 1A, such as the upstream side or both sides in the wave traveling direction. In this way, the check valve 24 changes in the entire periphery of the main body 10A in accordance with the progress of the wave, and closes at a portion where the wave peak exists and opens at a portion where the valley exists. Accordingly, the water that has entered the upper storage chamber 6a of the pool 6 through the opening 3a of the main body 10A is pooled, and the water wheel 16 is caused by the difference between the level of the input water that is slightly smoothed and the level of the discharged water that is discharged from the check valve 24 and the like. Therefore, a relatively stable rotation of the water turbine 16 is obtained with a relatively large water level difference, and efficient power generation is possible.

  Further, by making the water discharge path 22 widen toward the water discharge hole 23, there is an advantageous effect of increasing the flow speed in the drain hole 21 even when the flow speed in the water discharge hole 23 is small at the time of water discharge. On the other hand, when water is going to flow backward into the water discharge channel 22 from the outside of the inclined portion 3, increasing the flow rate of the drain hole 21 with respect to the flow rate in the water discharge hole 23 becomes a resistance, and the flow rate of the drain hole 21. Is difficult to go up. Therefore, it is easy to increase the amount of water discharged during water discharge, and there is a backflow prevention effect during reverse flow. However, from the viewpoints of economic efficiency and construction of the wave energy utilization device 1A, the cross section of the water discharge channel 22 may not be widened but may be a straight pipe.

  FIG. 9 is a cross-sectional view showing a modification of the wave energy utilization device 1A according to the second embodiment. In this modification, the position where the check valve 24 is disposed is different. In the wave energy utilization apparatus 1A, the check valve 24 is disposed on the inclined surface 3b in which the water discharge hole 23 that is the outlet of the water discharge path 22 is formed. However, as in this modification, the water discharge path 22 is provided. A check valve 24 may be disposed on the drain hole 21 side which is the inlet of the valve.

Next, a third embodiment will be described with reference to FIGS. 10 and 11.
In addition, the same code | symbol is attached | subjected to the site | part of the same kind as said each embodiment, and the overlapping description is abbreviate | omitted.
FIG. 10 is a longitudinal sectional view of a wave energy utilization device according to the third embodiment of the present invention. FIG. 11 is a plan view of the wave energy utilization device of FIG. The wave energy utilization apparatus 1B according to the present embodiment includes an upper storage chamber 6a of the pool 6 similar to the second embodiment, and includes a lower storage chamber 6c different from the lower storage chamber 6b. The water discharge means from 6c is different. A lower accommodation chamber 6c is provided below the partition plate 19 that partitions the pool 6 up and down. The lower housing chamber 6 c is formed by a bottom plate 29 and a side wall 30 continuing from the bottom plate 29. The side wall 30 is provided with a drainage hole 33 for allowing the water in the lower housing chamber 6c to flow into a water discharge passage 31 (water discharge portion) described below. On the outside of the side wall 30 of the lower housing chamber 6c, a plurality of water discharge channels 31 are formed in the radial direction toward the periphery of the main body 1B. Each water discharge channel 31 is formed from the lower surface of each inclined surface 3 b of the inclined portion 3, the bottom surface portion 32, the side wall 30, and the outer wall of the buoyancy chamber 9. The side wall 30 is provided with a check valve 34 for opening and closing the drainage hole 33.

  A plurality of water discharge holes 35 for discharging water that has passed through the water discharge path 31 to the outside of the main body 10B are formed in the inclined surface 3b that closes the water discharge path 31, and each of the water discharge holes 35 has a water discharge hole 35. A check valve 36 is provided for opening and closing the valve. The check valve 34 and the check valve 36 can flow the water in the lower storage chamber 6c of the pool 6 toward the upper surface of the inclined surface 3b, but can stop the flow of water in the opposite direction. Is provided.

  Next, the operation will be described.

  Assume that a wave has arrived from the left hand of the wave energy utilization apparatus 1B (hereinafter also referred to as apparatus 1B) as illustrated on the paper surface of FIG. Then, the wave (water) that has run up the inclined surface 3 b enters the upper accommodating chamber 6 a of the pool 6 from the opening 3 a of the inclined portion 3. This water rotates the water wheel 16 and flows into the lower housing chamber 6 c below the partition plate 19. At this time, the check valve 34 and the plurality of check valves 36 on the left side of the device 1B are closed. The water that has flowed into the lower storage chamber 6c flows into the water discharge channel 31 by opening the check valve 34 that opens and closes the drainage hole 33 formed in the right side wall 30 of the lower storage chamber 6c.

  The water flowing through the water discharge channel 31 opens any one of the check valves 36 of the plurality of water discharge holes 35 formed in the right inclined surface 3b and discharges the water outside the main body 10B. In such a series of water flows, when the rotating shaft 17 rotates together with the water turbine 16, the generator 18 linked to the rotation of the rotating shaft 17 is driven to generate electric power.

  At this time, as the wave becomes larger, the lower check valve 36, for example, the lowest check valve 36 opens more widely, and the water level in the upper storage chamber 6a of the pool 6 and the water level in the lowest discharge hole 35 are increased. The water level difference can be increased, leading to an increase in power generation efficiency.

  As shown in FIG. 11, the outer shape of the main body 10B is substantially circular, and the same operation can be obtained regardless of which direction the wave comes from and the same effect can be obtained. For example, a wave comes from the left direction from the center line, and a wave enters on the inclined surface 3b and proceeds sequentially from the lowest check valve 36, and sequentially passes from the highest check valve 36 on the opposite side past the center of the main body 10B. It is assumed that the process proceeds to the lowest check valve 36. At this time, the wave peak is on the right side of the center line of the apparatus 1B, and the wave valley is on the left side. At the peak of the wave, the check valve 36 is submerged in water, and at the valley, the check valve 36 is exposed to the air. Water flows from the pool 6 by opening the check valve 34 due to the difference between the water level of the pool 6 and the water level of the valley.

  Here, since the wave travels every moment, a valley portion occurs somewhere, and the check valve 36 of that portion opens. That is, the difference between the water level in the check valve 36 that is opened somewhere and the water level that has entered the pool 6 over the top of the inclined portion 3 is the water drop of the wave energy utilization device 1B. Therefore, in a general apparatus, the difference in water level between the water level lifted by the inclined surface 3b of the inclined portion 3 and the still water surface becomes the water drop of the apparatus, but in the present invention, the check valve 36 is opened at the wave valley. Since the portion up to this point is a drop in water, the drop in water becomes very large, resulting in a significant increase in power generation efficiency.

Next, a fourth embodiment will be described with reference to FIG.
FIG. 12 is a longitudinal sectional view showing a wave energy utilization apparatus 1C according to the fourth embodiment. In addition, the same code | symbol is attached | subjected to the site | part of the same kind as said each embodiment, and the overlapping description is abbreviate | omitted.
The wave energy utilization apparatus 1 </ b> C according to the present embodiment can actively perform both water intake and water supply. The pool 6 into which the wave that has passed the inclined surface 3b of the inclined portion 3 enters is partitioned into an upper storage chamber 6a and a lower storage chamber 6b by a partition plate 19.

  The upper storage chamber 6 a is provided with a communication portion 50 (first communication portion) that communicates with the underwater side, and a water discharge hose 51 is connected to the underwater side end of each of the communication portions 50. A water intake hose 48 (water intake pipe) that takes in water from the water is attached to the bottom center of the lower housing chamber 6b through a nozzle. The tip of the water intake hose 48 on the water intake side is placed on the seabed SG where water for water intake is present.

  Further, the lower storage chamber 6b communicates with a water discharge hose 49 (water discharge pipe) for discharging water taken into the lower storage chamber 6b from the water intake hose 48 to the outside of the main body 10C. The tip of the water discharge hose 49 on the water discharge port side is placed at a predetermined position on the seabed SG for the purpose of water discharge.

  On the outside of the pool side wall 7, a ring pipe 47 (second communication portion) that communicates the lower accommodation chamber 6 b and the water discharge hose 49 is provided in an annular shape. The water discharge hose 49 is connected to the ring pipe 47 by a nozzle. The ring tube 47 has an opening in the lower housing chamber 6b. The ring pipe 47 may be provided in an annular shape inside the pool side wall 7.

  A water wheel 43 (a first water wheel of water supply means) is disposed on the side of the upper housing chamber 6a in each communication part 50. The rotating shaft 44 to which the water wheel 43 is attached extends to the lower storage chamber 6b side through a bearing 45 attached so as to penetrate the partition plate 19. A water wheel 46 (second water wheel of water supply means) is attached to the end of the rotating shaft 44 on the lower housing chamber 6b side. The water wheel 46 rotates together with the water wheel 43 and feeds water taken from the water intake hose 48 into the lower housing chamber 6 b to the water discharge hose 49 through the ring pipe 47.

  Next, the operation will be described.

  As described in each of the above embodiments, the water that has gone up the inclined surface 3b divided by the converging dam 11 and entered the upper storage chamber 6a in the pool 6 from the opening 3a has gone up the inclined surface 3b. The water wheel 43 is rotated by the water level difference between the water level and the water level outside the main body 10 </ b> C, and then discharged from the water discharge hose 51.

  At this time, the rotation of the water wheel 43 is transmitted to the water wheel 46 via the rotation shaft 44, and the water wheel 46 rotates. By this rotation, the target water is taken in via the water intake hose 48 and taken into the lower housing chamber 6b. The water in the lower housing chamber 6 b is further sent to the ring pipe 47 by the rotation of the water wheel 46.

The water fed into the ring pipe 47 enters the water discharge hose 49 and is discharged from the water discharge port.
As described above, the wave energy utilization apparatus 1 </ b> C according to the present embodiment can actively take water from the water and can supply water by the water wheel 46 that rotates in conjunction with the rotation of the water wheel 43.

  The water discharge hose 49 may be extended to a facility other than the wave energy utilization apparatus 1C, for example, a tank, a pool, a farm, etc., and water may be discharged there to supply water.

  As described above, according to the wave energy utilization apparatus according to the present invention, a large amount of water can be actively taken in and sent, so that it is possible to control anoxic water masses, purify water, and improve the environment. Furthermore, it is permanently installed as a breakwater at the harbor or peninsula edge of a remote island, and it is operated as a floating wave breaker at the harbor, etc., while obtaining power, spreading and taking in deep water, supplying water to the farm, A single power source for purification or seawater desalination equipment can be provided in a complex manner, and it can serve as an energy center on a remote island or peninsula.

Next, a fifth embodiment will be described with reference to FIGS.
FIG. 13: is a longitudinal cross-sectional view which shows the wave energy utilization apparatus concerning 5th Embodiment.
The wave energy utilization apparatus 1D according to the present embodiment is characterized in that wave energy is utilized for temperature difference power generation. In addition, the same code | symbol is attached | subjected to the site | part of the same kind as said each embodiment, and the overlapping description is abbreviate | omitted.

  The pool 6 provided below the opening 3a is provided with a communication portion 15 communicating with the underwater side outside the main body 10D. Below the pool 6, a power generation chamber 55 is provided in which a temperature difference power generation device 100 that generates power using a water temperature difference between surface water and deep water is disposed. The power generation chamber 55 is sealed so as not to be submerged. The temperature difference power generation device 100 will be described later.

  The power generation chamber 55 is connected with a water intake hose 57 (water intake pipe) for taking in cold water at a deeper temperature lower than the surface water from the water. The water intake hose 57 is connected via a nozzle provided in the center of the power generation chamber 55. The water intake hose 57 has a water supply pipe 58 (a distribution pipe of the cold water distribution means) that distributes cold water taken by rotation of a water turbine 56 (second water wheel of the water supply means) described later into the condenser 59 of the temperature difference power generation device 100. It is connected.

  The water supply pipe 58 enters the power generation chamber 55 from the bottom of the power generation chamber 55 and is connected to the condenser 59 in order to distribute the cold water to the temperature difference power generation apparatus 100. The condenser 59 is connected to a water supply pipe 60 (a circulation pipe of the cold water circulation means) for discharging cold water to the outside of the power generation chamber 55. The water supply pipe 60 communicates with a water outlet 61 formed on the inclined surface 3 b of the inclined portion 3.

  Further, the power generation chamber 55 is provided with a water supply pipe 64a (a distribution pipe for the surface water distribution means) that distributes the high-temperature surface water stored in the pool 6 into the evaporator 63 in the temperature difference power generation apparatus 100. ing. A hot water intake 62 of the water supply pipe 64 a is disposed in the pool 6. The evaporator 63 is connected to a water supply pipe 64 b (a distribution pipe for the surface water distribution means) for discharging surface water to the outside of the power generation chamber 55.

  A water wheel 160 (a first water wheel of water supply means) is disposed in the communication unit 15. The rotating shaft 52 of the water wheel 160 passes through the bottom plate 54 of the pool 6 through a bearing and the like, and further passes through the power generation chamber 55 to reach the nozzle on the intake hose 57 side. The water turbine 56 is attached to the rotary shaft 52 in the nozzle. Therefore, when the water wheel 160 rotates, the water wheel 56 also rotates in conjunction with this.

FIG. 14 is a block diagram showing a temperature difference power generation device disposed in the power generation chamber of FIG.
The temperature difference power generation apparatus 100 shown in FIG. 14 executes a general and typical basic cycle (Rankine cycle) in ocean temperature difference power generation, but also performs a Kara cycle and a Uehara cycle. May be.

  The temperature difference power generation device 100 includes a condenser 59 that condenses the working fluid, an evaporator 63 that evaporates the working fluid condensed by the condenser 59, a pump 71 that sends the condensed working fluid to the evaporator 63, and A turbine 72 that rotates with the working fluid evaporated by the evaporator 63 and a generator 74 that generates electric power in conjunction with the rotation of the turbine 72 are provided. The working fluid is, for example, pure ammonia or a mixture of ammonia and water.

  Connected to the tube side of the condenser 59 are a water supply pipe 58 through which cold water is sent and a water supply pipe 60 through which used cold water is sent out. A pipe 68 communicating with the tank 69 is connected to the shell side of the condenser 59. The working fluid condensed in the condenser 59 is sent from the condenser 59 to the tank 69 through the pipe 68.

  The tank 69 is connected to the shell side of the evaporator 63 through a pump 71 by a pipe 70. The pump 71 has a discharge capacity capable of sufficiently sending the working fluid in the tank 69 to the evaporator 63. Connected to the tube side of the evaporator 63 are a water supply pipe 64a through which high-temperature surface water taken from the hot water intake port 62 is sent and a water supply pipe 64b through which used surface water is sent out.

  The evaporator 63 is connected to the turbine 72 via a pipe 73. The output shaft 72 a of the turbine 72 is connected to the rotating shaft of the generator 74. Therefore, when the turbine 72 rotates, the generator 74 can rotate to generate power. The outlet nozzle of the turbine 72 and the condenser 59 are connected by a pipe 75. That is, the working fluid circulates from the condenser 59, the tank 69, the pump 71, the evaporator 63, and the turbine 72 to the condenser 59, and has a piping structure so that these components constitute a Rankine cycle. Yes.

Next, the operation will be described.
A wave enters the pool 6 as in the above embodiments. This wave is discharged from the water outlet 67 through the pipe 66 after rotating the water wheel 160. At this time, the water turbine 56 rotates with the rotation of the water wheel 160. By this rotation, cold water near the sea floor SG is taken in via the water intake hose 57.

  This cold water passes through the water supply pipe 58, flows through the condenser 59, passes through the water supply pipe 60, and is discharged from the water outlet 61. Thereby, the ammonia gas which is a working fluid is cooled and condensed into a liquid. The working fluid that has become liquid flows into the tank 69 and is sent to the evaporator 63 by the pump 71.

  In the evaporator 63, the hot water taken at the hot water intake port 62 is sent to the evaporator 63 through the water supply pipe 64a, flows through the evaporator 63, and is discharged from the water outlet 65 through the water supply pipe 64b. Thereby, heat exchange with the working fluid is performed in the evaporator 63. The cold / warm ammonia liquid, which is a working fluid, is warmed and warmed by warm seawater here to change from liquid to gas. The vaporized working fluid is sent to the turbine 72 through the pipe 73, where the turbine 72 is rotated to drive the generator 74. Thereby, the generator 74 generates electric power. The working fluid is returned to the condenser 59. Electric power can be continuously generated by this series of cycles.

  For example, even in harbors where it is impossible to install caissons in deep waters such as the Izu Islands, Ogasawara, and Yakushima, it is possible to secure power on the remote islands by using the shore breaker and the power generator together. It is possible to increase the port availability rate of high-speed boats, and to promote tourism development and prevent depopulation.

It is a longitudinal cross-sectional view of the wave energy utilization apparatus concerning the 1st Embodiment of this invention. It is a top view of the wave energy utilization apparatus of FIG. It is an enlarged plan view which expands and shows a part of lower end side periphery of the main body of FIG. It is a side view which expands and shows a part of lower end side periphery of the main body of FIG. It is a longitudinal cross-sectional view of the wave energy utilization apparatus concerning the 2nd Embodiment of this invention. It is a top view of the wave energy utilization apparatus of FIG. It is sectional drawing which shows the vicinity of the water wheel in FIG. 5, and a generator. It is a top view which shows the vicinity of the water quantity control valve of FIG. It is a longitudinal cross-sectional view which shows the modification of the wave energy utilization apparatus of FIG. It is a longitudinal cross-sectional view of the wave energy utilization apparatus concerning the 3rd Embodiment of this invention. It is a top view of the wave energy utilization apparatus of FIG. It is a longitudinal cross-sectional view of the wave energy utilization apparatus concerning the 4th Embodiment of this invention. It is a longitudinal cross-sectional view of the wave energy utilization apparatus concerning the 5th Embodiment of this invention. It is a block diagram which shows the electric power generation cycle of the temperature difference electric power generator with which the wave energy utilization apparatus of FIG. 13 is provided.

Explanation of symbols

S ... Water surface SG ... Sea floor W ... Wave 1,1A, 1B, 1C, 1D ... Wave energy utilization device 2 ... Mooring device 3 ... Inclined portion 3a ... Opening 3b ... Inclined surface 4 ... Side wall 5 ... Skirt 5b ... Weight 6 ... Pool 6a ... Upper storage chamber 6b ... Lower storage chamber 6c ... Lower storage chamber 7 ... Pool side wall 8 ... Pool bottom 9 ... Buoyancy chamber 9a ... Bottom 10, 10A, 10B, 10C, 10D ... Main body 11 ... Converging dam 12 ... Buoyancy chamber 13 ... Balance floating body 14 ... Mounting base 15 ... Communication part 15a ... Through hole 16 ... Water wheel 17 ... Rotating shaft 18 ... Generator 19 ... Partition plate 21 ... Drain hole 22 ... Water discharge channel (water discharge part)
23 ... Water discharge hole 24 ... Check valve 25 ... Water discharge hose 29 ... Bottom plate 30 ... Side wall 31 ... Water discharge channel (water discharge part)
32 ... Bottom part 33 ... Drain hole 34, 36 ... Check valve 35 ... Water discharge hole 37 ... Side wall 43 ... Water wheel 44 ... Rotating shaft 45 ... Bearing 46 ... Water wheel 47 ... Ring pipe (second communication part)
48 ... Intake hose (intake pipe)
49 ... Water discharge hose (water discharge pipe)
50. Communication part (first communication part)
51 ... Water discharge hose 52 ... Rotating shaft 54 ... Bottom plate 55 ... Power generation chamber 56 ... Water wheel 57 ... Water intake hose (water intake pipe)
58 ... Water pipe 59 ... Condenser 60 ... Water pipe 61 ... Water outlet 62 ... Warm water intake 63 ... Evaporator 64a ... Water pipe 64b ... Water pipe 65 ... Water outlet 66 ... Pipe 67 ... Water outlet 68 ... Pipe 69 ... Tank 70 ... Pipe 71 ... Pump 72 ... Turbine 72a ... Output shaft 73 ... Pipe 74 ... Generator 75 ... Pipe 76 ... Casing 76a ... Separation part 77 ... Water control valve 77a ... Large diameter part 77b ... Arm 78 ... Valve seat 79 ... Stay DESCRIPTION OF SYMBOLS 80 ... Rotary shaft 81 ... Bearing 82 ... Guide rail 83 ... Grid 84 ... Fastening metal fitting 85 ... Suspension metal fitting 100 ... Temperature difference power generation device 160 ... Water wheel

Claims (11)

A main body having an inclined surface inclined upward from a peripheral edge on the lower end side of the water surface toward the central portion, and an opening in the central portion; and on the inclined surface of the main body, the lower end extends from the central portion to the inclined surface. A converging dam for converging waves, erected radially toward the peripheral edge of the side, the main body is floated on the water surface so that the central portion comes out on the water surface, and the center as the wave moves In the wave energy utilization device that uses water entering from the section,
A pool provided below from the opening and having a communication portion communicating with the underwater side, a water wheel disposed in the communication portion, and a generator that generates electric power in conjunction with rotation of the water wheel,
The rotating shaft of the water wheel is disposed on an extension line of the converging levee,
The water turbine is rotated by the water level difference between the water level entering the pool through the opening and the water level outside the main body after going up the inclined surface divided by the converging levee, to the generator A wave energy utilization device characterized by generating electricity. A main body having an inclined surface inclined upward from a peripheral edge on the lower end side of the water surface toward the central portion, and an opening in the central portion; and on the inclined surface of the main body, the lower end extends from the central portion to the inclined surface. A converging dam for converging waves, erected radially toward the peripheral edge of the side, the main body is floated on the water surface so that the central portion comes out on the water surface, and the center as the wave moves In the wave energy utilization device that uses water entering from the section,
A pool provided below the opening and having a communication part communicating with the underwater side, a water wheel disposed in the communication part, a generator for generating power in conjunction with the rotation of the water wheel, and surrounding the periphery of the main body With a skirt that can be lifted,
The water turbine is rotated by the water level difference between the water level entering the pool through the opening and the water level outside the main body after going up the inclined surface divided by the converging levee, to the generator A wave energy utilization device characterized by generating electricity. A main body having an inclined surface inclined upward from a peripheral edge on the lower end side of the water surface toward the central portion, and an opening in the central portion; and on the inclined surface of the main body, the lower end extends from the central portion to the inclined surface. A converging dam for converging waves, erected radially toward the peripheral edge of the side, the main body is floated on the water surface so that the central portion comes out on the water surface, and the center as the wave moves In the wave energy utilization device that uses water entering from the section,
A pool having an upper storage chamber and a lower storage chamber defined vertically below the opening and having a communication portion that communicates with the upper and lower storage chambers, a water wheel disposed in the communication portion, and the water wheel A generator that generates power in conjunction, a water discharge unit that discharges water in the lower storage chamber from the main body, and a water discharge unit that leads from the lower storage chamber to the inclined surface, and the lower storage unit that is closed from the main unit by closing the water discharge unit. With a check valve to prevent water from entering the room,
The power generation is performed by rotating the water wheel according to the water level difference between the water level entering the upper storage chamber of the pool and the water level outside the main body after going up the inclined surface partitioned by the converging levee A wave energy utilization device characterized in that the water is discharged from the water discharge portion to the outside of the main body due to the water level difference while causing the machine to generate power. The wave energy utilization device according to claim 3 , wherein the check valve is provided at a boundary between the lower accommodation chamber and the water discharge section. The check valve, wave energy utilization system according to claim 3 or 4, characterized in that provided at the outlets of the inclined surface that is water discharge from the water discharge unit. A main body having an inclined surface inclined upward from a peripheral edge on the lower end side of the water surface toward the central portion, and an opening in the central portion; and on the inclined surface of the main body, the lower end extends from the central portion to the inclined surface. A converging dam for converging waves, erected radially toward the peripheral edge of the side, the main body is floated on the water surface so that the central portion comes out on the water surface, and the center as the wave moves In the wave energy utilization device that uses water entering from the section,
A pool composed of an upper storage chamber and a lower storage chamber defined vertically below the opening, a water intake pipe for taking water from the water into the lower storage room of the pool, and a water intake pipe from the water intake pipe into the lower storage room A water discharge pipe for discharging the water outside the main body, and water supply means for taking water from the water intake pipe and sending water to the water discharge pipe,
The water supply means includes a first water wheel disposed in the upper housing chamber and a second water wheel disposed in the lower housing chamber and rotating in conjunction with the first water wheel.
The first water turbine is rotated by the difference in water level between the water level entering the pool through the opening and the water level outside the main body after going up the inclined surface partitioned by the converging levee, A wave energy utilization device, wherein the second water turbine rotating in conjunction with the rotation of one water turbine feeds water taken into the lower housing chamber from the water intake pipe into the water discharge pipe and discharges the water outside the main body. . The upper storage chamber of the pool has a first communication portion communicating with the underwater side,
The lower storage chamber of the pool has a second communication portion communicating with the water discharge pipe,
The first water wheel is disposed in a first communication portion of the upper accommodation chamber,
The second water turbine is disposed in a second communication portion of the lower housing chamber;
The water that has rotated the first water turbine is discharged from the first communicating portion to the underwater side by the first water wheel, and the water taken into the lower housing chamber by the rotation of the second water wheel is the second water wheel. The wave energy utilization device according to claim 6 , wherein the wave energy utilization device is sent to the water discharge pipe from the second communication portion and discharged to the outside of the main body. A main body having an inclined surface inclined upward from a peripheral edge on the lower end side of the water surface toward the central portion, and an opening in the central portion; and on the inclined surface of the main body, the lower end extends from the central portion to the inclined surface. A converging dam for converging waves, erected radially toward the peripheral edge of the side, the main body is floated on the water surface so that the central portion comes out on the water surface, and the center as the wave moves In the wave energy utilization device using surface water entering from the section,
A pool having a communication portion provided below from the opening and communicating with the underwater side, and a temperature difference power generation device provided below the pool and generating electricity using a water temperature difference between the surface water and deep water. A power generation chamber disposed; a water intake pipe for circulating cold water having a lower water temperature than the surface water to be circulated in the temperature difference power generation apparatus; and the temperature difference power generation by taking cold water from the intake pipe. Water supply means for feeding into the apparatus, cold water distribution means for circulating the cold water sent by the water supply means to the temperature difference power generation apparatus and then releasing it out of the main body, and surface water from the pool to the temperature difference power generation apparatus And a surface water circulation means for discharging to the outside of the main body,
The water supply means includes a first water wheel arranged at a communication portion of the pool, and a second water wheel arranged on the intake pipe side and rotating in conjunction with the first water wheel,
The first water turbine is rotated by the difference in water level between the water level of the surface water entering the pool from the opening after going up the inclined surface divided by the converging dam and the surface water. The surface water and the cold water that circulate through the circulation means and the second water turbine that rotates in conjunction with the rotation of the first water turbine circulates the cold water from the intake pipe to the cold water circulation means, and circulates through the surface water circulation means. The wave energy utilization device, wherein the temperature difference power generation device generates power by a temperature difference with cold water flowing through the circulation means. The temperature difference power generation device includes a condenser that condenses the working fluid, an evaporator that evaporates the working fluid condensed by the condenser, a pump that sends the condensed working fluid to the evaporator, and the evaporator A turbine that is rotated by the working fluid evaporated by the generator, a generator that generates electric power in conjunction with the rotation of the turbine, and a pipe that is disposed so that the working fluid circulates through the condenser, the pump, the evaporator, and the turbine. A structure,
The cold water circulation means has a circulation pipe that leads from the intake pipe side to the outside of the main body via the condenser, and the surface water circulation means passes from the pool side to the main body via the evaporator. Has a distribution pipe that leads to the outside,
The working fluid condensed by the condenser is vaporized by the evaporator, and the generator generates electricity by rotating the turbine before the vaporized working fluid returns to the condenser. 8. The wave energy utilization apparatus according to 8 . The wave energy utilization apparatus according to claim 1, 2 , 3 , 4 , 5 , 6 , 7 , 8 or 9 , further comprising a control valve for controlling the amount of water passing through the water wheel. Hanging surrounds the periphery of the body, according to claim 1, characterized in that with a lifting possible skirt, 3, 4,5,6,7,8, wave energy utilization system according to 9 and 10.

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