Float system for solar panel

Abstract

To provide a float system for solar panel capable of executing stable mooring.SOLUTION: A float system for solar panel used on water includes at least one float and at least one mooring member. The at least one mooring member includes a linear member, a stationary member, and a buffer member. The linear member connects the at least one float to the stationary member. The stationary member is stationed at the water bottom or on land. The buffer member cushions tensile force imparted on the linear member.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a float system for a solar panel. [Background technology]

[0002] Patent Document 1 discloses a technique for mooring a float system for solar panels on water. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-11006 A Summary of the Invention [Problem to be solved by the invention]

[0004] When a solar panel float system is exposed to strong winds such as a typhoon, excessive load is placed on the ropes and other components that make up the mooring members. An effective measure to ensure stable mooring was required.

[0005] The present invention has been made in consideration of the above circumstances, and provides a float system for solar panels that can provide stable mooring. [Means for solving the problem]

[0006] According to the present disclosure, the following inventions are provided. [1] A float system for solar panels for use on water, comprising at least one float and at least one mooring member, the at least one mooring member comprising a linear member, a fixed member, and a buffer member, the linear member connecting the at least one float and the fixed member, the fixed member being fixed to the bottom of the water or on land, and the buffer member buffering the tension applied to the linear member. [2] A system as described in [1], wherein the linear member is configured by connecting a first, second and third linear member in this order, the first linear member is connected to the float, the third linear member is connected to the fixed member, and the buffer member is attached to the second linear member. [3] The system described in [2], wherein the second linear member is a resin rope. [4] A system as described in [2] or [3], wherein the at least one mooring member includes first and second mooring members, the fixing members of the first and second mooring members are fixed at different positions from each other, and the first and second mooring members have first linear members of equal length, second linear members of equal length, and third linear members of different lengths. [5] The system according to any one of [2] to [4], wherein both of the second and third linear members are resin ropes.

[0007] In the present invention, since the cushioning member can impart a cushioning function to the mooring member, stable mooring can be achieved. [Brief description of the drawings]

[0008] [Figure 1] 1 is a plan view showing an example of a float system for a solar panel 1 (already equipped with a solar panel 50) according to an embodiment. [Diagram 2] 1. FIG. 2 is an enlarged view of the configuration in the dashed-line frame A in the center of FIG. 1, and is an exploded perspective view of the float 10 and the solar panel 50. [Diagram 3] FIG. 3A is a perspective view of the float 10, and FIG. 3B is a cross-sectional view of the vicinity of the mooring part 70 of the float 10 along the line BB in FIG. 3A (with the eyebolt 80 and the like attached). [Figure 4] 2A to 2C are diagrams illustrating the configuration of a mooring member 100. [Diagram 5] 5A shows an example of the cushioning member 200, FIG. 5B shows a modified example of the cushioning member 200, and FIG. 5C shows an example of another cushioning member 210. In FIG. [Figure 6]FIG. 13 is a plan view showing an example in which a mooring method according to a modified example (V-shaped mooring member 150) is adopted in the solar panel float system 1. [Figure 7] 13 is a diagram illustrating a modified example (V-shaped mooring) of a mooring member 150. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present invention will be described. Various features shown in the following embodiments can be combined with each other. Also, each feature can be an invention independently.

[0010] 1. Configuration of Solar Panel Float System 1 In the following description, for the sake of simplicity, the solar panel float system 1 of the embodiment will also be referred to simply as "system 1." As illustrated in FIG. 1, the system 1 can be configured by connecting a large number of floats 10 in a planar direction. Most of the floats 10 in the center are equipped with solar panels 50. On the other hand, in the embodiment, the floats 10 arranged in a circular row on the outermost periphery of the system 1 are not equipped with solar panels 50, for example.

[0011] The system 1 is used on water. The system 1 includes at least one float 10 and at least one anchoring member 100. The system 1 includes a plurality of floats 10 and a plurality of anchoring members 100 as illustrated in FIG.

[0012] There is no limitation on the number of floats in the system 1 or the planar shape of the system 1. In FIG. 1, as an example only, the system 1 is constructed in a rectangular shape in a planar view, 9×9 floats 10, i.e., a total of 81 floats 10 are connected, and solar panels 50 are mounted on 7×7 floats 10, i.e., a total of 49 floats 10 excluding the outermost periphery. A power conversion device such as a power conditioner may be installed on any of the floats 10 not shown. In addition, any of the floats 10 on the east, west, north, or south sides of the system 1 may be connected to a pier. By connecting many floats 10 and mounting many solar panels 50, the wind load received by the system 1 increases, and the tension (tensile load) on each mooring member 100 also increases.

[0013] In FIG. 1, as an example, the mooring members 100 are attached to the floats 10 in a circular row at the outermost periphery. When the system 1 is installed in the northern hemisphere, as an example, more mooring members 100 may be attached to the row of floats 10 arranged at the northern end of the system, among the east-west, north-south, and north-west directions. This is a measure against winds blowing from north to south, since the solar panels 50 are tilted to face the south side in the northern hemisphere (see FIG. 2). In the embodiment, as an example, the mooring members 100 are attached to all the floats 10 arranged at the northern end. On the other hand, the mooring members 100 may be attached to each row of floats 10 arranged at the southern, eastern, and western ends, each of which may have fewer mooring members 100 than the northern end. As an example, the relationship in the number of mooring members may be "north side ≧ south side > east-west side". All of the floats 10 at the four corners of the system 1 are connected to the mooring members 100. However, the configuration described here is merely one example, and there are no limitations on the positions or number of floats 10 to which the mooring members 100 should be attached. The mooring members 100 may be attached to any float 10, including the central one, or the mooring members 100 may be attached to the same number of floats 10 in the east, west, north and south. When the system 1 is installed in the southern hemisphere, more mooring members 100 may be attached to the group of floats 10 on the south side rather than the north side.

[0014] 2. Configuration of the float 10 and the solar panel 50 An example of a specific configuration of the float 10 etc. will be described with reference to Figures 2 to 3B. Figure 2 is an exploded perspective view showing an enlarged view of the configuration of the dashed frame A in the center of Figure 1. As an example in the embodiment, as shown in Figure 2, the front side of the float 10 faces the north side, and the rear side faces the south side.

[0015] 2 illustrates a state in which a solar panel 50 is installed on the float 10. As illustrated in FIG. 2, the float 10 includes a receiving portion 12, a fixing bracket 13 (including a clamping portion 13a and a fixing member 13b), a fixing bracket 14, an attachment portion 19, and a connecting bolt 62.

[0016] FIG. 3A illustrates a float 10 that does not include a solar panel 50. The float 10 includes a support portion 11, a bolt hole 62a, and a mooring portion 70 (including a first through hole 71 and a second through hole 72). The support portion 11 and the mooring portion 70 are hidden behind the solar panel 50 in FIG. 2. The float 10 may be manufactured, for example, by blow molding, in which a molten cylindrical parison is sandwiched between multiple split dies and inflated. Various thermoplastic resins can be used as the molding material. For example, polyolefin resins such as polyethylene and polypropylene can be suitably used.

[0017] The solar panel 50 includes a glass portion 50a and bases 53 and 54. On the front side, the outer periphery of the solar panel 50 is fixed by the fixing bracket 13 and the support portion 11. Similarly, on the rear side, the outer periphery is fixed by the fixing bracket 14, the receiving portion 12, and the mounting portion 19. The float 10 has bolt holes 62a at its front and rear ends, and the bolt holes 62a can be fixed to the bolt holes of a connecting member (not shown) with connecting bolts 62. This makes it possible to connect any two floats 10 together by turning the connecting member.

[0018] As an example, the support portion 11 shown in Fig. 3A may be configured to be foldable. In the outermost float 10 in the system 1 of Fig. 1, the support portion 11 may be folded.

[0019] With reference to Fig. 3B, a state in which the eyebolt 80 is fixed to the mooring part 70 will be described. In the embodiment, as an example, the eyebolt 80 and the bolt 83 are first inserted into the first and second through holes 71, 72 of the float 10 from below the plane of Fig. 3B (i.e., from the water surface side), and are further inserted into the through hole 82a of the fixing plate 82, and fixed with nuts 81, 84. One end 101a of the mooring member 100 is connected to the ring of the eyebolt 80.

[0020] 3. Configuration of the mooring member 100 4 is a diagram illustrating the configuration of the mooring member 100. The mooring member 100 includes a linear member 101, a fixed member 105, and a buffer member 200. One end 101a of the mooring member 100 is connected to the float 10 (eyebolt 80) (see FIG. 3B). The other end 101b of the mooring member 100 is connected to the fixed member 105 (fixed portion 105a). In this way, the linear member 101 connects the fixed member 105 and the float 10.

[0021] The fixing members 105 are fixed to the bottom of the water or on land. In the embodiment, as an example, each fixing member 105 is fixed to the bottom of the water. The fixing members 105 may be anchors or sinkers. An anchor is lightweight and suitable for transportation, and the installation work on the bottom of the water can usually be performed by a diver. A sinker is a weight made of concrete, heavy metal, or the like, which has a specific gravity significantly greater than that of water.

[0022] For example, the linear member 101 is configured by connecting first, second and third linear members 102, 103 and 104 in this order. The first linear member 102 is connected to the float 10. For example, the first linear member 102 may be made of metal, such as a chain or a metal wire. For example, the buffer member 200 is attached to the second linear member 103. The third linear member 104 is connected to a fixed member 105.

[0023] The second and third linear members 103, 104 may be resin ropes, for example. The material of the resin rope may be any material selected from the group consisting of polypropylene, polyethylene, polyamide, polyester, polyvinyl chloride, polyurethane, polyether, and fluororesin. The resin rope may further contain an ultraviolet absorber, an antioxidant, carbon black, and / or an elastomer (softening component) as an additive. The second and third linear members 103, 104 may be made of the same material or different materials. Note that polypropylene and polyethylene have a smaller specific gravity than water. By using polyamide as the resin rope, a suitable resin rope may be made that is hard, has a large elongation rate, and is less likely to wear. The resin rope may have a three-strand structure. The material and / or structure of the second linear member 103 may be selected so that it is more easily bent and softer than the third linear member 104, thereby making it easier to attach the buffer member 200 by providing flexibility to the second linear member 103.

[0024] In the embodiment, as an example, the length of the entire linear member 101 is L0, and the length of the third linear member 104 is L1 (see FIG. 4). In this case, the value of L1 / L0 is, for example, 0.2 to 0.9, preferably 0.3 to 0.8, and more preferably 0.4 to 0.6. Specifically, for example, L1 / L0=0.20, 0.25, 0.30, 0.35, 0.40, 0.45, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85, 0.90, and may be within a range between any two of the numerical values ​​exemplified here.

[0025] In the embodiment, as an example, the length of the second linear member 103 to which the buffer member 200 is attached is defined as L2 (see FIG. 4). In the embodiment, the value of L1 / L2 is, for example, 0.3 to 10.0, preferably 0.4 to 7.0, and more preferably 0.5 to 5.0. Specifically, for example, L1 / L2=0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9, or 10.0, and may be within a range between any two of the numerical values ​​exemplified here.

[0026] The second and third linear members 103, 104 may have the same thickness or different thicknesses. The thickness may be defined as the diameter of the cut surface when the second and third linear members 103, 104 are cut along a transverse plane (a plane perpendicular to the length direction of an elongated object). When the cut surface is non-circular, the thickness may be defined as the diameter of a circumscribed circle. The second linear member 103 may be made thinner than the third linear member 104, which may make the second linear member 103 easier to bend and facilitate the attachment of the buffer member 200. Alternatively, the second linear member 103 may be made thicker than the third linear member 104 so as to be sufficiently resistant to winding or bending of the second linear member 103 when attached to the buffer member 200.

[0027] The buffer member 200 buffers the tension applied to the linear member 101 (the second linear member 103 in this embodiment). A specific example of the buffer member 200 is shown in Fig. 5A etc., and will be described in detail later.

[0028] In the embodiment, the mooring member 100 is divided into three in the length direction to form a multiple-member configuration, and the buffer member 200 is attached to the central second linear member 103. One advantage is that when the buffer member 200 is made of resin, the buffer member 200 can be easily maintained in water, and problems with the weather resistance of the buffer member 200 (deterioration by ultraviolet rays due to sunlight) can be suppressed.

[0029] In the embodiment, since the second linear member 103 is a resin rope, it is possible to utilize the flexibility of the resin rope in addition to the buffer member 200. Another advantage is that the buffer member 200 can be easily attached.

[0030] In the embodiment, as an example, both the second and third linear members 103, 104 are resin ropes. The reason for connecting the resin ropes is that it is possible to share functions, that is, the second linear member 103 is mainly used for attaching the buffer member 200, and the third linear member 103 is used for adjusting the length of the entire mooring member 100. There is also an advantage in that impact resistance is increased by adopting a configuration in which two resin ropes are connected in series. However, this is not limited to this, and as a modified example, the buffer member 200 may be attached to the third linear member 104 instead of the second linear member 103, or the buffer member 200 may be attached to each of the second and third linear members 103, 104.

[0031] From the viewpoint of strength, the fixing part 105a made of metal may be adopted. When different metals come into contact with each other, electrolytic corrosion occurs, which causes weakening and rusting. When the system 1 according to this embodiment is installed for a long period of time (for example, 20 years, etc.), there is a lot of rubbing between the members, and it is necessary to pay particular attention to the weakening and rusting described above. Therefore, in order to prevent electrolytic corrosion, it is preferable to use the same type of metal between the members that come into contact, or to perform plating processing to prevent electrolytic corrosion. In this embodiment, taking such electrolytic corrosion into consideration, the fixing member 105 and the first linear member 102 are connected by second and third linear members 103 and 104 made of resin rope.

[0032] 4. Configuration of the cushioning member 200 5A to 5C, a cushioning member 200 of an embodiment and a cushioning member 210 of a modified example will be described. Fig. 5A shows an example of the cushioning member 200. The cushioning member 200 includes an attachment hook 201 and a winding portion 202. The winding portion 202 is, for example, cylindrical. The attachment hooks 201 have any hook shape and are provided on both ends of the winding portion 202.

[0033] The thickness (diameter) of the winding portion 202 may be thicker or thinner than the linear member to be wound. The length (longitudinal dimension) and thickness of the winding portion 202 are designed so that the linear member to be wound (the second linear member 103 in this embodiment) can be wound n times or more. Adjacent portions of the wound linear member may be spaced apart from each other along the longitudinal direction (axial direction) of the winding portion 202. The number of windings n is specifically, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, and may be within a range between any two of the numerical values ​​exemplified here.

[0034] The material of the mounting hook 201 and the winding part 202 is arbitrary, and may be the same material or different materials. The material of the winding part 202 may be, for example, an elastic material, specifically, for example, any resin, any rubber, or any thermoplastic elastomer. The any resin may be, for example, ABS, polyethylene, polypropylene, polystyrene, polyvinyl chloride, or acrylic resin. The any rubber may be, for example, nitrile rubber, chloroprene rubber, hypalon, polybutadiene rubber, ethylene-propylene rubber (EPM), ethylene-propylene terpolymer (EPDM), H-NBR, or silicone rubber. For example, it is preferable to select the material in consideration of tensile strength, bending strength, torsional load strength, water resistance, weather resistance, and / or cold resistance. In the embodiment, ethylene-propylene terpolymer (EPDM) can be adopted as a more preferable material, and EPDM has the advantage of being excellent in at least water resistance, chemical resistance, weather resistance, and cold resistance.

[0035] On the other hand, the material of the attachment hook 201 may be the same as or different from the material of the winding part 202. The attachment hook 201 and the winding part 202 may be integrated, or may be integrally molded from the same material. In the case of different materials, the material of the attachment hook 201 may be harder or softer than the winding part 202. For example, the winding part 202 may be rubber or resin, and the attachment hook 201 may be metal.

[0036] FIG. 5B is a modified example of the buffer member 200. The winding portion 202 is replaced with a winding portion 202a. The winding portion 202a includes a core material and a buffer covering the core material. The core material is rod-shaped or wire-shaped, and mounting hooks 201 are provided at both ends of the core material. The core material may be a rigid body, or may be an elastic body harder than the buffer. The shape of the core material may be a plate material, a rod material, a pipe, or a cord material. The material of the core material may be, for example, metal or resin. In the case of a cord material, it may be resin fiber or metal fiber. On the other hand, the buffer is a portion around which the second linear member 103 is wound and comes into contact with the second linear member 103. The buffer is sandwiched between the second linear member 103 and the core material, and the clamping force of the second linear member 103 when tension T is generated can be buffered by the buffer. It is preferable that the buffer is an elastic body. The material of the buffer body may be, for example, rubber or resin, and specifically, any material may be adopted from the various materials exemplified for the winding portion 202 above.

[0037] In FIG. 5A or FIG. 5B, an attachment ring of any shape may be used instead of the attachment hook 201. The attachment function may be provided by passing the second linear member 103 through the attachment ring. The attachment ring may adopt an openable / closable connection structure such as a carabiner. Note that the buffer member 200 may be detachable from the linear member 101 (the second linear member 103 in the embodiment) after the installation of the mooring member 100, that is, it may be possible to attach or remove it later at any time after the installation of the system 1. This detachable function is obtained by at least the attachment hook 201 or an openable / closable fastener such as a carabiner.

[0038] 5C shows another example of a cushioning member 210. The cushioning member 210 has a plurality of mounting holes 211 provided in a plate-like member 212 having a thickness. The second linear member 103 is inserted through the mounting holes 211 and extends while bending (meandering) in the thickness direction of the plate-like member 212. The material of the plate-like member 212 may be any elastic material, and may be, for example, rubber (specifically, EPDM, etc.). The material of the plate-like member 212 can be selected from the same group of materials as the material of the winding portion 202 described above.

[0039] The buffer members 200, 210 described above can provide a buffer function to the mooring member 100, enabling stable mooring. The buffer members 200, 210 suppress instantaneous and excessive tension from being applied to the linear member 101 (second linear member 103) when the system 1 is exposed to strong winds such as a typhoon. The buffer members 200, 210 can bear at least a part of the tensile load (see tension T in Figs. 5A to 5C) applied to the linear member 101 (second linear member 103), thereby buffering the tension applied to the linear member 101 (second linear member 103).

[0040] When the system 1 is exposed to strong winds such as a typhoon, excessive load is placed on the linear members 101 constituting the mooring member 100. If an attempt were made to counter this by increasing the number of mooring members 100, there would be a problem of increased component and installation costs for the mooring members 100. In this regard, in the embodiment, the mooring function of the mooring member 100 can be maintained even during strong winds due to the cushioning function of the cushioning members 200, 210. This makes it possible to improve the mooring function of the system 1 without adding any mooring members 100, or by keeping the number of additional mooring members to a minimum.

[0041] Although the configuration of the buffer member 200 has been illustrated, the present invention is not limited to this. Various known buffer members for mooring, also called "shock absorbers" or "mooring buffers", can be used. Considering the durability of the mooring member 100 when it is suspended in water, a simple structure without moving parts is preferable, and in this respect, the configurations of Figures 5A to 5C are advantageous.

[0042] 5. Modifications, etc. 5-1. Modifications of linear members There is no limitation on the configuration of the linear member 101, and it is not limited to the three-part configuration of the embodiment. The linear member 101 may be composed of a single continuous linear member, or may be composed of two linear members connected in series (two-part configuration), or may be composed of four or more linear members connected in series. There is no limitation on the material of the linear member 101. For example, the first to third linear members 102 to 104 may all be resin ropes, or metal wires, etc.

[0043] 5-2. Adjusting the length of multiple mooring components In the embodiment, as an example, the multiple mooring members 100 provided in the system 1 may include first and second mooring members 100 having different lengths. The fixing members 105 of the first and second mooring members 100 are fixed at different positions. As an example, among the multiple mooring members 100 installed on each float 10 on the north side in FIG. 1, the one at the right end or the left end may be a "first mooring member 100" and the one in the middle may be a "second mooring member 100."

[0044] As an example, the first and second anchoring members 100 may have the same length of the first linear member 102, the same length L2 of the second linear member 103, and different lengths L1 of the third linear member 104. The length of the anchoring member 100 can be adjusted according to the anchoring position by the lower third linear member 104. The length of the third linear member 104 of the first anchoring member 100 is L1a, and the length of the third linear member 104 of the second anchoring member 100 is L1b. However, as an example, L1a>L1b. In this case, the value of L1a / L1b is, for example, 1.1 to 4.0, preferably 1.2 to 3.0, and more preferably 1.5 to 2.0. Specifically, L1a / L1b is, for example, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, 3.0, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 4.0, and may be within a range between any two of the numerical values ​​exemplified here.

[0045] As another example, the first and second anchoring members 100 may have the same lengths of the first and third linear members 102, 104, and the length L2 of the second linear member 103 may be different from each other. The length of the second linear member 103 of the first anchoring member 100 is L2a, and the length of the second linear member 103 of the second anchoring member 100 is L2b. As an example, L2a>L2b. In this case, the value of L2a / L2b may be the same as the numerical range exemplified for L1a / L1b above.

[0046] For example, the length adjustment of the mooring member 100 may be utilized in the following situations. There may be cases where the fixing positions of the fixing members 105 vary significantly in the vertical direction and / or the fixing positions of the fixing members 105 vary significantly in the planar direction. There may also be cases where such positional variation in the height direction and / or planar direction occurs between the fixing members 105 installed on the bottom of the water and the fixing members 105 installed on land. In such cases, the lengths of the linear members 101 of the first and second mooring members 100 may be differentiated (specifically, at least one of the first to third linear members 102 to 104 may be differentiated) to adjust the length of each mooring member 100 to an appropriate length according to the fixing positions of the fixing members 105.

[0047] 5-3. Modifications of mooring materials and methods (V-shaped mooring) 6 and 7 are schematic diagrams illustrating a "V-shaped mooring" according to a modified embodiment. In this modified embodiment, the other ends 101b of the multiple linear members 101 are connected to a common fixing member 105 as shown in Fig. 7, and one end 101a of each of the multiple linear members 101 is connected to a different float 10 as shown in Fig. 6. As a result, the multiple linear members 101 extend in a V-shape as shown in Fig. 7.

[0048] For convenience, this configuration is referred to as "V-shaped mooring" in this modified example. In Fig. 7, there are two linear members 101, but this is not limited to this, and three or more linear members 101 may be connected to a common fixing member 105. The lengths of the multiple linear members 101 in one mooring member 150 may be the same, but this is not limited to this and they may be different from each other. Regardless of the number and / or length differences of the linear members 101, this modified example will collectively be referred to as V-shaped mooring.

[0049] In Fig. 7, as an example, the buffer members 200 are attached to all of the multiple linear members 101 of the mooring member 150. However, this is not limited to this, and the buffer members 200 may be attached only to a predetermined number (i.e., one or several) of the multiple linear members 101 of the mooring member 150, which is less than the total number of the multiple linear members 101. In other words, in Fig. 7, the buffer members 200 may be attached to only one of the two linear members 101. Depending on the wind direction, the tensile load may vary greatly among the multiple linear members 101, and only some of the linear members 101 may be pulled strongly. The buffer members 200 may be adopted only to some of the linear members 101 that receive such a relatively strong tensile load, and thereby it is possible to effectively achieve stable mooring while suppressing the number of buffer members 200.

[0050] In this modification, "float spacing" is defined as one of the parameters that define the V-shaped mooring structure of the mooring member 150. The float spacing is a value that defines "how many floats 10 are sandwiched between a float 10 connected to one linear member 101 and a float 10 connected to another linear member 101 in the mooring member 150." The distance between the connections of the linear members 101 and the floats 10 (see distances D1 and D2 in FIG. 6) is determined according to the float spacing.

[0051] In the example of FIG. 6, when looking at the mooring members 150 on the north and south sides, the linear members 101 of the adjacent floats 10 are connected to a common fixing member 105. In the embodiment of the system 1, as an example, all the floats 10 have the same shape, structure, and dimensions. In the example of FIG. 6, the mooring members 150 on the north and south sides have a float interval of "zero". Accordingly, on the north and south sides, the distance D1 between the connections between the linear members 101 and the floats 10 may be, for example, about 1 m. On the other hand, the mooring members 150 on the east and west sides have a float interval of "one". Accordingly, on the east and west sides, the distance D2 between the connections between the linear members 101 and the floats 10 may be, for example, about 2 m (that is, twice the distance on the north and south sides). The reason for making the float interval narrower on the north and south sides than on the east and west sides is that the system 1 is more susceptible to the effects of winds in the north-south direction, and therefore, the purpose is to increase the strength of the mooring on the north and south sides. In particular, it is preferable to narrow the float interval in the mooring member 150 on the north side. On the other hand, the mooring members 150 on the east and west sides may have a larger float interval than on the north and south sides (for example, 1 to 2 floats as shown in FIG. 6). The size relationship of the float interval may be, for example, "north side ≧ south side> east and west side". The float interval may be, for example, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 floats, and may be within a range between any two of the values ​​exemplified here. In the embodiment, the linear member 101 is divided into three parts, and / or the second and third linear members 103, 104 are both made of resin ropes, which makes it easy to adjust the length of the linear member 101, and has the advantage of being able to adjust the difference in float interval. Note that the configuration of FIG. 6 allows multiple mooring members 150 to be arranged while preventing the linear members 101 from contacting each other, and also has the advantage of suppressing wear due to friction.

[0052] Please refer to the angle θ in Fig. 7. This θ is a parameter that defines the V-shaped mooring structure of the mooring member 150 (see Fig. 7). θ is the interior angle formed by the multiple linear members 101 with the fixing portion 105a as the apex. θ is preferably 45° or less, and more preferably 30° or less. Specifically, θ is, for example, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, or 60°, and may be within a range between any two of the numerical values ​​exemplified here.

[0053] The characteristic configuration and method for V-shaped mooring described in this modification may be treated as a separate technical idea independent of the buffer members 200 and 210 of the embodiment. The buffer member 200 may be omitted from the mooring member 150, and a mooring member with such an omission may be adopted in the system 1.

[0054] 5-4.Others (weights and fasteners) As an example, a weight may be attached to any of the first to third linear members 102 to 104. In particular, when the second or third linear member 103, 104 is a resin rope, a weight may be attached to the resin rope to urge it vertically downward. As another example, any two of the first to third linear members 102 to 104 may be connected via a fastener. The fastener may be, for example, a shackle or the like, or may have a certain amount of weight. These weights and fasteners are collectively referred to as "weights, etc." There is no limitation on the material of the weights, etc., but they may be made of metal. For example, if the second or third linear member 103, 104 is a resin rope and connected with a metal fastener, there is an advantage that the metal members do not come into contact with each other. It is preferable that these weights, etc. are provided at the connecting portion of the second and third linear members 103, 104 or in the vicinity of the connecting portion. The reason is that once installed, a floating solar power generation system is required to operate stably for a long period of time (for example, 10 to 20 years). It is expected that the mooring members will deteriorate over time, and the resin rope, which was initially strong, will deteriorate and become less resistant to strong winds, and the above-mentioned buffer members 200, 210 are one of the effective countermeasures. In order to suppress the deterioration of the resin rope as much as possible, it is effective to reduce the influence of ultraviolet rays. For this reason, it is desirable to keep the resin rope submerged in water as much as possible so that it is not exposed to direct sunlight. In particular, the water level in a reservoir is prone to change, and when the water level drops, slack is created in the rope, and as a result, the resin rope (more specifically, especially a rope with a specific gravity lighter than water, such as a PP rope) is likely to float on the water surface. For these reasons, it is effective to use the weight of a weight or the like to make it difficult for the resin rope to rise to the water surface.

[0055] The configuration of the float 10 in the embodiment is an example, and there is no limitation to the specific configuration. Any water-borne float structure capable of mounting the solar panel 50 can be used. It is not limited to a blow molded body, and a simple flat plate-shaped floating body may be used.

[0056] Although various embodiments of the present invention have been described, these are presented as examples and are not intended to limit the scope of the invention. The novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. The embodiments and their modifications are included within the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0057] 1: Float system for solar panels 10: Float 11: Support part 12: Receiving part 13: Fixing bracket 13a: Holding part 13b: Fixing member 14: Fixing bracket 19: Mounting part 50: Solar panel 50a: Glass part 53, 54: Pedestal 62: Connecting bolt 62a: Bolt hole 70: Mooring section 71: First through hole 72: Second through hole 80: Eye bolt 81: Nut 82: 1st fixed plate 82a: Through hole 83: First Bolt 84: First nut 100, 150: Mooring members 101: Linear member 101a: One end 101b: other end 102: First linear member (chain) 103: Second linear member (resin rope) 104: Third linear member (resin rope) 105: Fixing member 105a: Fixed part 200, 210: Cushioning material 201: Mounting hook 202, 202a: Winding part 211: Mounting hole 212: Plate-shaped member

Claims

1. A float system for solar panels for use on water, comprising: At least one float and at least one anchoring member; The at least one anchoring member includes a linear member, a fixing member, and a buffer member. the linear member connects the at least one float and the fixed member; The fixing member is fixed to the bottom of the water or on land, The buffer member buffers tension applied to the linear member.

2. 2. The system of claim 1, the linear member is configured by connecting first, second and third linear members in this order, The first linear member is connected to the float, the third linear member is connected to the fixed member, The buffer member is attached to the second linear member.

3. 3. The system of claim 2, The system, wherein the second linear member is a resin rope.

4. A system according to claim 2 or claim 3, the at least one anchoring member includes first and second anchoring members; The fixing members of the first and second anchoring members are fixed at different positions from each other, A system in which the first and second anchoring members have first linear members of equal length, second linear members of equal length, and third linear members of different lengths.

5. A system according to claim 2 or claim 3, The system, wherein both the second and third linear members are resin ropes.

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