JP7352510B2 - Floating body positioning structure - Google Patents

Description

The present invention relates to a floating body positioning structure for holding and positioning a floating body such as a heat insulating lid placed on a water surface such as a heat storage tank.

2. Description of the Related Art Conventionally, it has been known to install floating bodies having various functions on the water surface. Known examples of such floating bodies include generators that use wind power, wave power, or sunlight, and heat insulating materials for thermally insulating heat media.

Since such a floating body is installed on the water surface, it moves on the water surface due to wind force or wave force, and various positioning means are known for regulating this movement. As such positioning means, for example, as described in Patent Document 1, an anchor is connected to the floating body, and the anchor is lowered to the seabed to moor the floating body.

According to the floating body positioning structure described in Patent Document 1, even if the floating body moves on the water surface, since it is moored by the anchor, it is possible to restrict the floating body from moving more than a predetermined amount. ing.

Japanese Patent Application Publication No. 2003-343447

However, according to the floating body positioning structure described in Patent Document 1, a predetermined amount of movement is allowed due to the loosening of the anchor, so movement in the horizontal direction is required until the positioning structure functions. . Therefore, there has been a problem in that it cannot be applied to structures that cannot allow this movement.

In addition, when the floating body is an insulating lid for a heat storage tank, even if the water level of the heat medium stored inside fluctuates, in order to ensure appropriate insulation performance, it is necessary to adjust the vertical direction according to the displacement of the water level. Since it is necessary to be able to move in the direction, a structure is desired that allows movement in the vertical direction while restricting movement in the horizontal direction.

Therefore, the present invention has been made in view of the above problems, and is capable of regulating the movement of a floating body installed on the water surface in the horizontal direction, as well as preventing movement in the vertical direction by following fluctuations in the water level on the water surface. aims to provide an acceptable floating body positioning structure.

A floating body positioning structure according to the present invention is a floating body positioning structure that is formed by excavating the ground so that a liquid can be stored therein, and is installed on the surface of the liquid so as to have a predetermined distance from the floating body. The floating body is characterized by having a first tension member installed above the floating body, and a second tension member that connects the first tension member and the floating body.

Further, in the floating body positioning structure according to the present invention, it is preferable that the second tension member communicates with the first tension member at a predetermined angle.

Moreover, in the floating body positioning structure according to the present invention, it is preferable that the angle formed by the first tension member and the second tension member is an acute angle.

Further, in the floating body positioning structure according to the present invention, it is preferable that a plurality of the first tension members are installed at predetermined intervals.

Further, in the floating body positioning structure according to the present invention, it is preferable that the first tension members are arranged in a mesh shape so as to intersect with each other.

Moreover, in the floating body positioning structure according to the present invention, it is preferable that the second tension member communicates with an intersection of the first tension member.

Further, in the floating body positioning structure according to the present invention, it is preferable that the floating body has a sloshing absorption mechanism.

The above summary of the invention does not list all the necessary features of the invention, and subcombinations of these features may also constitute the invention.

The floating body positioning structure according to the present invention includes a first tension member installed on the floating body and a second tension member that connects the first tension member and the floating body, so that when the floating body moves in the horizontal direction In this case, the movement of the floating body in the horizontal direction is regulated by the second tension member, and when the water surface is displaced, the angle formed by the second tension member and the first tension member changes, causing the floating body to move in the vertical direction. It is possible to allow floating bodies to move to.

FIG. 1 is a cross-sectional view of a heat storage tank having a floating body positioning structure according to the present embodiment. An enlarged view of part A in FIG. 1. FIG. 1 is a plan view of a heat storage tank having a floating body positioning structure according to the present embodiment. FIG. 2 is an enlarged view for explaining the configuration of the floating body positioning structure according to the present embodiment.

Hereinafter, preferred embodiments for carrying out the present invention will be described using the drawings. Note that the following embodiments do not limit the inventions claimed in each claim, and not all combinations of features described in the embodiments are essential to the solution of the invention. .

FIG. 1 is a sectional view of a heat storage tank having a floating body positioning structure according to this embodiment, FIG. 2 is an enlarged view of part A in FIG. 1, and FIG. 3 is a floating body positioning structure according to this embodiment. FIG. 4 is a plan view of a heat storage tank having a heat storage tank, and FIG. 4 is an enlarged view for explaining the configuration of the floating body positioning structure according to the present embodiment.

As shown in FIG. 1, the heat storage tank 1 having the floating body positioning structure according to the present embodiment is a heat storage tank with a rectangular top surface of about 60 to 90 m on a side, and hot water is supplied to the heat storage tank 1. A heat plant (not shown) is also installed as a hot water production department. This heat plant may have any configuration as long as it can produce hot water as a heat medium, but is preferably configured as a solar thermal plant using solar thermal panels, for example.

The heat storage tank 1 stores hot water W serving as a heat medium, which is supplied from a heat plant (not shown) to a hot water supply water supply device 3 via a hot water supply water pipe 4. Note that the hot water supply and water supply device 3 is preferably held within the heat storage tank 1 by support piles 5.

The heat storage tank 1 is preferably formed by excavating the ground G, and the sides of the heat storage tank 1 are formed by driving the heat storage tank wall 2 onto a replacement concrete foundation 6 having a predetermined thickness or a foundation 6 made of chestnut stone or the like. and is formed on a surface substantially perpendicular to the ground surface GL. The distance from the upper surface of the heat storage tank wall 2 to the water surface of the hot water W is arranged such that the heat storage tank wall 2 protrudes from the ground surface GL so as to have a margin height h.

In addition, a heat-resistant and water-shielding sheet 11 is attached to cover the heat storage tank wall 2 and bottom surface, which are the interface between the heat storage tank 1 and the ground G, to prevent groundwater from entering into the ground G and heat exchange. ing. In addition, if the groundwater level is high and interferes with the heat storage of hot water W stored in the heat storage tank 1, an impermeable wall is formed near the heat storage tank 1, and groundwater pumping equipment such as a deep well is used. You can also try to insulate it.

The heat-resistant and water-shielding sheet 11 coated on the heat storage tank wall 2 and bottom of the heat storage tank 1 is installed to insulate the hot water in the heat storage tank 1 and prevent the hot water from leaking to the ground G. Various materials such as a polyethylene sheet can be used as long as the sheet has heat insulating and water-blocking properties.

Further, the upper surface of the heat storage tank 1 has an opening on the ground surface GL by excavating the ground G, but the opening is closed by a heat insulating lid 20 having heat insulating properties. The heat insulating lid 20 may be made of any material as long as it can keep the hot water stored in the heat storage tank 1 warm, but for example, as shown in FIG. A heat insulating sheet laminated with a skin 22 made of polyethylene or the like can be used.

A sloshing absorption mechanism 30 is formed in the heat storage tank 1 . When the water level in the heat storage tank 1 fluctuates and shakes due to an earthquake or the like, the sloshing absorption mechanism 30 absorbs the fluctuation in the water level and causes hot water in the heat storage tank 1 to leak to the outside of the heat storage tank 1. This is a mechanism to prevent this from happening.

Specifically, the surface of the hot water W stored in the heat storage tank 1 is stored with a margin height h by the heat storage tank wall 2 protruding from the surface GL of the ground G. The margin height h can be set appropriately as long as it can absorb the shaking of the hot water W when the surface of the hot water W shakes due to sloshing, but it is preferable to set it to about 1.5 m, for example. .

Further, the outer edge of the heat-resistant and water-shielding sheet 11 is formed with a heat-resistant and water-shielding sheet-side folded part 32 that extends along the height direction of the heat storage tank wall 2 by a margin height h, and the outer edge of the heat-insulating lid 20 is formed on the heat-storage tank wall 2. A heat-insulating lid-side folded portion 31 is formed along the height direction of the wall 2 and extends by a margin height h. The heat-resistant water-shielding sheet-side folded part 32 and the heat-insulating lid-side folded part 31 overlap each other along the margin height h of the heat storage tank wall 2, and are joined to each other at the upper surface of the heat storage tank wall 2 to form the folded part. A sloshing absorption mechanism 30 is configured.

A pressure release 40 is attached to the heat insulating lid-side folded portion 31 of the sloshing absorption mechanism 30, and the pressure release 40 enables communication between the inside and outside of the heat storage tank 1. The pressure relief 40 is formed by a tubular first pipe part 41 extending from the heat insulating lid side folded part 31, and bent at a substantially right angle from the tip of the first pipe part 41 so as to face in the opposite direction to the sloshing absorption mechanism 30. A lid body 43 serving as a release mechanism is fitted into the tip of the second tube portion 42 to close it. Note that the lid 43 is attached so that it can be easily removed when the pressure inside the heat storage tank 1 rises above a predetermined pressure.

It is preferable that the pressure relief 40 be formed in the vicinity of the joint portion of the sloshing absorption mechanism 30 between the heat-insulating lid-side folded portion 31 and the heat-resistant and waterproof sheet-side folded portion 32. Further, it is preferable that a plurality of pressure vents 40 are formed along the outer edge of the heat insulating lid 20, and for example, it is preferable that they are formed at intervals of 10 m.

Furthermore, the tip of the second pipe part 42 of the pressure release 40 is formed so as to face toward the center of the heat storage tank 1 when the heat insulation lid side folded part 31 becomes horizontal due to a rise in water level due to sloshing, which will be described later. and is suitable. By arranging the tip in this manner, the tip of the second tube section 42 is normally directed downward, which prevents foreign matter from entering, and the water level rises due to sloshing, causing the lid body 43 to Even if the heat storage tank 1 comes off, the hot water W inside the heat storage tank 1 is discharged onto the heat insulating lid 20 of the heat storage tank 1, thereby preventing damage to the neighborhood due to hot water W leaking outside the heat storage tank 1. be able to.

Furthermore, since the sloshing absorption mechanism 30 allows the insulating lid 20 to move horizontally in order to absorb sloshing, the insulating lid 20 will also move horizontally due to high wind speeds such as typhoons. there is a possibility. Due to the movement of the heat insulating lid 20 due to the wind or the like, the heat insulating lid 20 may climb over the heat storage tank wall 2 and come off from the heat storage tank 1, which may impede the heat insulation of the hot water W. Therefore, it is necessary to restrict the movement of the heat insulating lid 20 in this horizontal direction. Furthermore, the water level of the hot water W moves up and down due to the water supply from the hot water supply and water supply device 3, but in order to ensure the insulation performance of the heat insulating cover 20, the heat insulating cover 20 also moves up and down at the same time to follow the fluctuations in the water level. dynamic movement needs to be allowed.

Therefore, the heat storage tank 1 has a floating body positioning structure 50 according to this embodiment. As shown in FIG. 2, the floating body positioning structure 50 according to the present embodiment includes a first tension member 51 installed above the heat insulating cover 20 so as to have a predetermined distance from the heat insulating cover 20 as a floating body, and The second tension member 52 is connected to the first tension member 51 and the heat insulating lid 20, respectively.

As shown in FIG. 3, a plurality of first tension members 51 are installed at predetermined intervals of, for example, about 10 m, and are arranged in a mesh pattern above the heat storage tank 1 so as to intersect with each other. ing. The first tension member 51 is preferably made of a wire or the like, and its end portion is fixed to the ground G by an anchor 53. Although the first tension member 51 is installed over the heat storage tank 1 with a predetermined tension, it may have some slack (sag) due to its own weight.

As shown in FIG. 4, one end of the second tension member 52 is connected to the intersection 54 of the first tension members 51, and the other end is connected to the heat insulating lid 20. The angle θ between the first tension member 51 and the second tension member 52 is preferably formed to be an acute angle, and is preferably set to about 10° to 30°, for example.

Further, any type of tension material may be used as the second tension material 52 as long as it can restrict horizontal movement of the heat insulating lid 20, but if the service life of the heat storage tank 1 is several tens of tens of years. Considering the length of time, durable ropes, manila ropes, etc. are preferably used.

In this way, according to the floating body positioning structure 50 according to the present embodiment, the horizontal force applied to the heat insulating lid 20 due to wind or the like is transferred to the first tension member 52 by the second tension member 52 attached to the first tension member 51. It is possible to position the heat insulating lid 20 by transmitting it to the anchor 53 at the end of the tension member 51, thereby stabilizing the position of the heat insulating lid 20.

Further, according to the floating body positioning structure 50 according to the present embodiment, the second tension member 52 communicates with the first tension member 51 at a predetermined angle, so that the insulation lid 20 is horizontal. Displacement in the direction is restricted, but fluctuations in the water level in the vertical direction are allowed, so if there is a fluctuation in the water level, the insulating lid 20 will not be hindered from following the water surface.

Furthermore, according to the floating body positioning structure 50 according to the present embodiment, the second tension member 52 is in communication with the intersection point 54 of the first tension member 51, so that it can withstand wind force from any direction. It can exert a strong horizontal restraining force.

Further, although the floating body positioning structure 50 according to the present embodiment described above has been described for the case where the heat insulating lid 20 of the heat storage tank 1 is positioned, the floating body is not limited to the heat insulating lid of the heat storage tank, and can be used, for example, on water. It may also be applied to various floating bodies that require positioning, such as installed solar panels. It is clear from the claims that such modifications or improvements can be included within the technical scope of the present invention.

1 Heat storage tank, 2 Heat storage tank wall, 11 Heat-resistant water-shielding sheet, 20 Heat-insulating lid, 21 Heat-insulating material, 22 Skin, 30 Sloshing absorption mechanism, 31 Heat-insulating lid side folded part, 32 Heat-resistant water-shielding sheet side folded part, 40 Pressure release , 41 first pipe section, 42 second pipe section, 43 lid body, 50 floating body positioning structure, 51 first tension member, 52 second tension member, 53 anchor, 54 intersection, h allowance height, G ground, GL is the ground surface, θ is the angle formed.

Claims (7)

A positioning structure for a floating body formed by excavating the ground so that a liquid can be stored therein, and installed on the surface of the liquid,
It is characterized by having a first tension member installed above the floating body so as to have a predetermined distance from the floating body, and a second tension member that connects the first tension member and the floating body. Floating body positioning structure. The floating body positioning structure according to claim 1,
A positioning structure for a floating body, wherein the second tension member communicates with the first tension member at a predetermined angle. The floating body positioning structure according to claim 1 or 2,
A positioning structure for a floating body, wherein an angle formed by the first tension member and the second tension member is an acute angle. The floating body positioning structure according to any one of claims 1 to 3,
A floating body positioning structure, wherein a plurality of the first tension members are installed at predetermined intervals. The floating body positioning structure according to claim 4,
A floating body positioning structure, wherein the first tension members are arranged in a mesh pattern so as to intersect with each other. The floating body positioning structure according to claim 5,
A positioning structure for a floating body, wherein the second tension member is in communication with an intersection of the first tension member. The floating body positioning structure according to any one of claims 1 to 6,
A positioning structure for a floating body, wherein the floating body has a sloshing absorption mechanism.

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