JPH0585754B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a wave power generation device that generates power by using the kinetic energy of waves constantly generated on the sea surface. Using constantly occurring wave height differences, floating devices suspended on the sea surface are raised and lowered repeatedly, and chains are connected to these floating devices.
The present invention relates to a wave power generation device that drives a power generation device.

<Prior Art and Problems> In general, waves are constantly generated in the sea due to weather effects, and the period and speed of the waves are constantly changing as they reach the seashore. Therefore, in recent years, power generation devices have been developed that generate motive energy by converting and utilizing the wave height, wavelength, and period of waves.

However, according to conventional ocean energy conversion methods, for example, a power generation device that uses the tidal difference in tidal water, the buoyant force of the floating device activates a piston pump to pump seawater to a predetermined height, and then the seawater is pumped up. Power was obtained by using the drop of seawater to rotate a power generation turbine. Also, at high tide, the floating device is floated, and at low tide, seawater is stored in the floating device and is lowered by the weight of the seawater, and the up and down movement of the floating device activates the fluid pressurizing means, and the fluid flowing out from the floating device is activated. It was becoming more and more powerful.

However, such conventional power generation methods have the problem that their use is limited to areas adjacent to the seaside due to restrictions on their installation location, and their complicated configuration prevents them from being put to practical use. The dot was hot.

Therefore, the present invention has been made to solve these problems, and aims to provide a wave power generation device that can generate electricity at a low cost using a simple device.

<Means for solving the problem> For this reason, the wave power generation device according to the present invention connects a large number of hollow pipes in a lattice shape, and applies a buoyancy force that balances the gravity applied to the hollow pipes in a predetermined manner. A frame structure in which an air bladder is installed and maintained at a predetermined depth below the sea surface and approximately parallel to the sea surface, at least one floating device floated on the sea surface, and the floating device is attached to the upper end. A chain that is locked and has a weight locked at its lower end, and whose middle part is wound around a pulley, and converts the reciprocating rotational movement of the pulley generated when the chain is wound around the pulley into unidirectional rotational movement. a rotation conversion device provided on the pulley for conversion; and a rotation conversion device for converting the float, the chain, and the rotation conversion device such that the float, the chain, and the rotation conversion device are rotatable on a plane parallel to the frame structure. a rotational support device that supports the device on the frame structure; one end is locked to the floating device to prevent relative movement of the floating device in the horizontal direction with respect to the frame structure; a floating device connecting rope that is anchored to the support device; an anchor rope that anchors the frame structure to the seabed ground to prevent the frame structure from moving in the horizontal direction; and an anchor rope that is provided in conjunction with the pulley. The present invention includes a power generation device that generates power based on the movement of the floating device on the sea surface that is converted into a rotational movement in one direction by the rotation conversion device.

Further, the buoyant force generated by the air bladder may be approximately 1.2 times as large as the gravitational force acting on the frame structure.

Further, one end of the floating device connecting rope is formed by bifurcating, and the one end is configured to be locked to both sides of the locking portion where the chain of the floating device is locked, and the other end is configured to be locked to both sides of the locking portion where the chain of the floating device is locked. In a configuration in which the floating device is engaged with the tip of the dynamic support device, a plane including the chain and the floating device connecting rope may be oriented in the direction of wave propagation.

<Function> In such a configuration, a frame structure is constructed by connecting a large number of hollow pipes in a lattice shape, and the frame structure is created by the balance between the gravity applied to the hollow pipes and the buoyant force applied to the air bag. , is maintained at a predetermined depth below the sea surface and approximately parallel to the sea surface, and thus is always maintained at a predetermined depth below the sea surface without being affected by the surface wave movement of waves.

In addition, since the frame structure is suspended on the seabed by anchor ropes, by transporting the prefabricated wave power generation device to the installation site, it can be easily and easily operated regardless of the condition of the seabed or the depth of the ocean. Can be installed in common.

Further, at least one floating device floated on the sea surface is locked to the frame structure by a floating device connecting rope, and relative movement in the horizontal direction between the floating device and the frame structure is prevented. .

Therefore, when the floating device moves up and down along with the surface wave movement of the waves, the up and down movement is efficiently transmitted to the chain, causing the chain to reciprocate.

Then, the reciprocating rotational motion of the pulley by the chain is converted into unidirectional rotational motion by the rotation conversion device, and power is generated by the power generation device.

Here, the frame structure is prevented from moving in the horizontal direction with respect to the seabed ground by an anchor rope, and furthermore, the floating device, the chain, and the rotation conversion device are parallel to the frame structure by a rotation support device. It is supported by the frame structure so as to be rotatable on a flat plane. Therefore, when the traveling direction of the surface wave motion of the waves changes, the floating device, the chain, and the rotation conversion device rotate with respect to the frame structure, and the floating device changes the traveling direction of the surface wave motion of the waves. It is located on the downstream side of the direction, making the reciprocating movement of the chain efficient.

Furthermore, if the buoyancy force generated by the air bladder is approximately 1.2 times the gravity applied to the frame structure, it is possible to apply appropriate tension to the anchor rope that holds the frame structure against the seabed ground. It becomes possible.

Further, one end of the floating device connecting rope is formed by bifurcating, and the one end is configured to be locked to both sides of the locking portion where the chain of the floating device is locked, and the other end is configured to be locked to both sides of the locking portion where the chain of the floating device is locked. When the configuration is such that it is engaged with the tip of the dynamic support device, a plane including the chain and the floating device connecting rope is oriented in the direction of wave propagation,
Even if the traveling direction of the surface wave motion of the waves changes and the floating device, chain, and rotation converting device rotate with respect to the frame structure, the floating device will move downstream in the traveling direction of the surface wave motion of the waves. In addition to being located on the side, the orientation of the float is also always constant with respect to the plane. That is, for example, a predetermined axis of the floating device including a locking portion to which the chain is locked and a locking portion to which the floating device connecting rope is locked is perpendicular to the traveling direction of the surface wave motion of the waves. As a result, conversion of rotational motion by the rotation conversion device and power generation by the power generation device are performed more efficiently.

<Example> FIGS. 1 to 3 show the wave power generation device according to the present invention installed in the deep sea, for example, at a depth of about 120 to 150 meters.

The frame structure 71 is constructed by arranging a plurality of hollow support pipes having a predetermined standard in a lattice pattern at regular intervals on the same plane.

Furthermore, four air bags 80 per unit are installed on the grid-like frame structure 71.

Therefore, an upward buoyant force is always acting on the frame structure 71 due to the air bladder 80 installed on the frame structure 71 against the gravity.

Here, the four partitions of the lattice-like frame structure 71 are connected and supported by an anchor 79 fixed to the seabed ground by an anchor rope 82, and the frame structure 71 is connected to the buoyant force and the frame structure. Due to the balance between the weight of the body 71 and the tension acting on the anchor rope 82, it will be installed at a predetermined depth (approximately 9 to 10 meters) underwater.

In this embodiment, the buoyancy force acting on the air bag 80 is set to be 1.2 times the total weight of each frame in the water. Therefore, the anchor 7
It is possible to apply an appropriate tension to the anchor rope 82 connected to the anchor rope 9, and without applying unreasonable force to the anchor rope 82, the whole wave power generation device can be placed at a predetermined depth in the sea or on the seabed. It is now possible to hold the vessel without being shaken by ocean currents.

The frame structure 71 also includes an anchor rope 8
2 to the anchor 79 fixed to the ground on the seabed, it prevents horizontal movement beyond a certain distance due to the force of waves from the predetermined installation position, and the radius of the anchor rope 82 It is designed to move within the range according to the direction of wave movement.

Furthermore, since the frame structure 71 is held on the anchor 79 by the anchor rope 82, by making the anchor rope 82 a predetermined length and transporting the prefabricated wave power generation device to the device installation location, the wave power generation device can be The power generation device can be easily and commonly installed regardless of the condition of the seabed ground or the depth of the sea.

Next, the rotation support device and rotation conversion device provided on the frame structure 71 will be explained with reference to FIGS. 4 and 5.

The rotation support member 72 includes a lower portion made of a cylindrical tube 104 and an upper portion made of an H-shaped steel 105. Here, the cylindrical tube 104 is rotatably supported by four I-beams fixed to the frame structure 71, as will be described later.

The tip 72A of the rotation support member 72 is located above the sea surface and connected to the floating device 73 by an anchor rope 81 serving as a floating device connecting rope.

Further, an upper arm 84 having a pulley 83 and a trolley 96 at its tip is mounted perpendicularly to the rotation support member 72 at an intermediate portion of the rotation support member 72 . Below the upper arm 84, a lower arm 86 is installed perpendicularly to the rotation support member 72, and a reinforcing member 87 is interposed between the upper and lower arms 84, 86. A support member 88 is installed at the intermediate portion and is perpendicular to the reinforcing member.

Here, as shown in FIG. 4, a rotation shaft 89 of a first sprocket 85 with a one-way clutch bearing 103 interposed therebetween is fitted into the tip of the support member 88, and a second A sprocket 99 is pivoted. That is, the second sprocket 99 has a one-way clutch bearing 10
3 in a predetermined direction, it rotates together with the first sprocket 85.

Further, a seat 9 is provided below the lower arm 86.
2 is installed vertically on the rotation support member 72,
A transmission and a generator 91 are arranged on the pedestal 92.

Further, a chain 102 is wound around the second sprocket 99 and the third sprocket 100 fitted to the input shaft 77 of the transmission. Further, the tension of the chain 102 is adjusted by a tension sprocket 101 movably formed on the lower arm 86.

In this embodiment, the base 92 has its tip connected to one end of the upper arm 84 by a turnbuckle 93 and a tip bar 94 to ensure strength.

Further, in this embodiment, a wire rope 74 that is connected to the bottom surface of a floating device 73 located on the sea surface and extended in the vertical direction is connected to a chain 75 at a position above a pulley 83.
5 passes between the pulley 83 and the trolley 96, wraps around the first sprocket 85, passes through the pulley 97 fitted to the tip of the lower arm 86, and then carries a predetermined weight (approximately 300 kg).
degree).

That is, the floating device 73, the wire rope 74 and the chain 75, the first sprocket 85, and the pulley 9.
7 and the weight 78 are arranged on the same plane so as to be rotatable around the rotation support member 72 with the rotation support member 72 as the center.

Further, the second sprocket 99, the third sprocket 100, the chain 102, and the tension sprocket 101 are also arranged on the same plane so that they can rotate around the rotation support member 72. Furthermore, this plane is parallel to the plane containing the aforementioned floating device 73, chain 75, etc.

When the floating device 73 on the sea surface moves up and down, the up and down movement is transmitted to the first sprocket 85 by the rope 74 and chain 75, causing the first sprocket 85 to rotate clockwise and counterclockwise.
Here, due to the one-way clutch bearing 103 interposed in the first sprocket 85, the second sprocket 99 is rotated only when upward buoyancy is applied to the float 73. That is, as shown in FIG. 4, since the second sprocket 99 is fitted on the rotation axis 89 line of the first sprocket 85 with the one-way clutch bearing 103 interposed therebetween, the vertical movement of the float 73 causes , first sprocket 85
Even if the sprocket is rotated clockwise, the second sprocket 9
Only the rotational force when the floating device 73 rises is transmitted to the floating device 9. That is, when the floating device 73 is lowered, the first sprocket 85 spins idly under the gravity of the weight 78. Therefore, the second sprocket 99 is intermittently rotated in one direction, and the third sprocket 100 fitted to the input shaft 77 of the transmission and generator 91 is also intermittently rotated. is driven intermittently to generate electricity.

That is, the first sprocket 85, one-way clutch bearing 103, and second sprocket 99 constitute a rotation conversion device, and the second sprocket 99, third sprocket 100, chain 102, and generator 91 constitute a power generation device.

Furthermore, FIG. 5 is a drawing showing the state of connection between the H-shaped steel 105 at the upper part of the rotation support member 72 and the cylindrical tube 104 at the lower part. cylindrical tube 10
The H-shaped steel 1 is connected by four ribs 108 formed around the upper flange 106.
The lower end of 05 is welded. Furthermore, a packing 109 such as Teflon is inserted between the bottom surface of the lower flange 107, the upper part of the cylindrical tube 104, and the cylindrical hollow steel tube 110, and the packing 109 such as Teflon is inserted between the upper H-shaped steel 105 and the lower cylindrical tube. The shaped tube 104 is supported so as to rotate smoothly.

Cylindrical tube 104 serving as the lower end of the rotation support member 72
is rotatably inserted and supported within a cylindrical fixture 112 formed on a support member 111 welded to an intermediate portion of four I-beams that support it.

At this time, the outer peripheral surface of the cylindrical tube 104 and the fixture 1
A packing is inserted between the inner surfaces of the rotary support member 72 to allow the rotary support member 72 to rotate smoothly.

That is, the rotation support member 7 on which the upper arm 84, the lower arm 86, and the seat 92 are vertically installed.
2. A rotation support device is constituted by the packing 109 and the like interposed between the lower flange 107 and the cylindrical hollow steel pipe 110.

FIG. 3 is a partial plan view of the wave power generation device according to this embodiment, and as shown in the drawing, one floating device 73
Each group of frames equipped with the above are connected to adjacent frames on all sides on the same plane, thereby forming an overall grid-like frame structure 71. That is,
The frame structure 71 is extended in all directions around the rotation support member 72, and each air bag 80 is installed at a predetermined position on each frame to give upward buoyancy to the frame structure 71. Each end of the frame of each base is provided with a wedge 82 as shown in FIG.
and is connected to an adjacent frame by a U-bolt 83.

7 to 9 show examples of the floating device 73. FIG. Each connecting part 113 arranged around the floating device 73 is fastened with bolts with packing interposed, and the inside of the floating device is completely sealed to prevent seawater from flowing in. .

A rectangular plate 114 is attached with bolts to the center of the surface of the floating device 73 facing the seabed for connecting a rope. A first connecting member 115 for hanging the wire rope 74 connected to the chain 75 via a shackle 117 is provided at the center of the plate 114, and inside the first connecting member 115, Tip 72 of rotation support member 72
A second connecting member 116 for hooking the anchor rope 81 connected to A is provided.

In this embodiment, the tip 72A of the rotation support member 72
The anchor rope 81 connected to the floating device 73
The part connected to the anchor rope 81 is branched into two, and each anchor rope 81 connects to each second connecting member 11.
6.

Therefore, the floating device 73 on the sea surface is pulled while being supported at three points by the wire rope 74 and the anchor rope 81. Here, the floating device 73 and the wire rope 74 are arranged on the same plane that can rotate around the rotation support member 72, and the anchor rope 81 is also rotated. Tip 7 of dynamic support member 72
2A, so if the direction of movement of the waves changes, the direction in which the second connecting member 116 of the floating device 73 is tied will be held perpendicular to the direction of movement. .

That is, all floating devices 73 located above the sea surface
For example, the longitudinal axis thereof is always arranged perpendicular to the traveling direction of the wave, and the traveling direction of the surface wave motion of the wave changes, causing the floating device 73, chain 75, second sprocket 99, and Even when the third sprocket 100 and the like rotate with respect to the frame structure 71, the floating device 73 is not only located downstream in the direction of movement of the surface wave motion of the waves, but also the direction of the floating device 73 is The orientation is always constant with respect to the plane containing the floating device 73, chain 75, first sprocket 85, etc., and the power generation device generates electricity more efficiently.

Moreover, as mentioned above, the transmission and generator 91 include
Since power is transmitted only when upward buoyancy is applied to the floating device 73, electricity is intermittently produced from the generator, so the electricity is temporarily stored in a storage battery and then used when necessary. It is desirable to use stored electricity.

Further, the transmission and the generator 91 are housed in the casing, and the casing is completely closed, and the inside of the casing is filled with compressed air capable of maintaining the pressure 1.2 times the water pressure applied depending on the water depth. This makes it possible to prevent seawater from flowing into the casing 91A of the transmission and generator 91.

In addition, according to this embodiment, the configuration is such that power is generated by directly driving the generator, but when implementing the present invention, the wave power is used to drive the piston pump or air compressor. It is also possible to convert it directly into possible power.

<Effects of the Invention> As explained above, according to the present invention, a frame structure that is maintained at a predetermined depth below the sea surface and approximately parallel to the sea surface, and is suspended on the seabed ground by an anchor rope, and A floating device that is suspended by a floating device connecting rope to a dynamic support device and floated to the sea surface, a rotation conversion device that converts the vertical movement of the floating device into a rotational movement in one direction, and the floating device and the rotation conversion device are The wave power generation device is configured to include a rotation support device that supports the frame structure so as to be rotatable on a plane parallel to the frame structure, and a power generation device that generates power based on the movement of the floating device on the sea surface. When the floating device moves up and down in accordance with the surface wave movement of the waves, the power generation device efficiently generates electricity.

Further, even if the traveling direction of the surface wave motion of the waves changes, the floating device and the rotation conversion device rotate with respect to the frame structure, and the floating device moves downstream in the traveling direction of the surface wave motion of the waves. This makes the power generation efficient.

In addition, regardless of the size of the waves, the movement of the floating device in the wave advancing direction is restricted, and the floating device always faces the waves in a predetermined direction, so the kinetic energy of the waves can be efficiently used. can be converted into electrical energy.

Further, even when the device is installed in the deep sea, the device can be installed at a certain depth from the sea surface, so there is an effect that the installation, maintenance, and repair of the device can be easily performed.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of a wave power generation device according to the present invention, FIG. 2 is a partially enlarged view of FIG. 1,
FIG. 3 is a plan view of the same embodiment as above, FIG. 4 is a sectional view taken along line A-A in FIG. 2, FIG. 5 is an enlarged view of part B in FIG. Exploded perspective view, No. 7
The figure is a cross-sectional side view showing a connection state between the floating device and the rope according to the above embodiment, FIG. 8 is a longitudinal cross-sectional view of the floating device according to the above embodiment, and FIG. FIG. 71... Frame structure, 72... Rotation support member,
73... Floating device, 74... Wire rope, 75... Chain, 78... Weight, 79... Anchor, 80... Air bag, 82... Anchor rope, 85... First sprocket, 91... Generator, 99... Second sprocket,
100...Third sprocket, 103...One-way clutch bearing.

Claims (1)

[Claims] 1. A large number of hollow pipes are connected in a lattice pattern, an air bag is installed that generates a buoyancy that balances the gravity applied to the hollow pipes at a predetermined depth, and a frame structure maintained approximately parallel to the sea surface; at least one floating device floated on the sea surface; the floating device is anchored to an upper end portion, a weight is anchored to a lower end portion; a chain wound around a pulley; a rotation conversion device provided on the pulley to convert the reciprocating rotational movement of the pulley generated when the chain is wound around the pulley into a unidirectional rotational movement; a rotation support device that supports the float, the chain, and the rotation conversion device on the frame structure so that the float, the chain, and the rotation conversion device can rotate on a plane parallel to the frame structure; a floating device connecting rope having one end locked to the floating device and the other end locked to the rotation support device to prevent horizontal relative movement of the frame structure with respect to the frame structure; An anchor rope for holding the frame structure on the seabed ground to prevent horizontal movement; and a floating device provided in conjunction with the pulley and converted into a rotational movement in one direction by the rotation conversion device. What is claimed is: 1. A wave power generation device comprising: a power generation device that generates power based on the motion of the sea surface; and a wave power generation device. 2. The wave power generation device according to claim 1, wherein the buoyancy force generated by the air bladder is approximately 1.2 times the gravity applied to the frame structure. 3 One end of the floating device connecting lobe is formed by bifurcating, and the one end is configured to be locked on both sides of the locking portion where the chain of the floating device is locked, and the other end is configured to be locked on both sides of the locking portion where the chain of the floating device is locked. Wave power generation according to claim 1, characterized in that the configuration is such that the chain is engaged with the tip of the support device so that a plane including the chain and the floating device connecting rope faces in the direction of wave propagation. Device.