Offshore photovoltaic system

Abstract

An offshore photovoltaic system disclosed by the present invention comprises a floating body and a floating ball assembly, the floating body is provided with a photovoltaic panel, the floating ball assembly comprises two floating balls, the two floating balls are respectively located at two sides of the floating body, the floating balls are connected with an elastic cable, the bottom end of the elastic cable is connected with an anchor, a plurality of anchoring line groups are connected between the two floating balls, and the anchoring line groups are connected with the floating body. The multiple anchoring line sets are distributed in the horizontal direction and penetrate through the floating body. The structure can resist severe sea conditions, meets the requirement for supporting an offshore photovoltaic system in the deep sea field, and improves the utilization rate of ocean space.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic systems, and in particular to an offshore photovoltaic system. Background Art

[0002] Due to the shortage of land resources, some regions have planned large-scale offshore energy areas, which has promoted the research and development of offshore photovoltaics. According to the characteristics of the planned sea areas, most of them are located in areas with a water depth of more than 20m, and fixed photovoltaic support structures cannot meet the needs of offshore photovoltaic field development. In recent years, many technical solutions for floating photovoltaic support systems have been proposed at home and abroad, including rigid structures, flexible structures, and rigid-flexible combined structures. However, due to technical problems or cost issues, none of them have been commercialized on a large scale.

[0003] For example, the existing thin-film floating photovoltaic system uses HDPE engineering plastics to form a floating body, with a thin film structure in the middle floating on the water, and photovoltaic panels installed on the film. Its disadvantages are that the floating body is made of engineering plastics, the structural strength cannot meet the requirements of deep sea conditions, and its structure is a basin-shaped structure, the film is in contact with water, and when there is overtopping, the internal drainage cannot be solved.

[0004] There is also a semi-submersible photovoltaic support system, which has the disadvantages of using a large amount of steel, poor stability, poor wind resistance, and low reliability of the connection position. Summary of the invention

[0005] In view of the defects in the prior art, the present invention provides an offshore floating system. The structure can withstand severe sea conditions, meet the support of offshore photovoltaic systems in deep sea areas, and improve the utilization rate of ocean space.

[0006] An offshore photovoltaic system comprises a floating body and a floating ball assembly, wherein a photovoltaic panel is installed on the floating body, and the floating ball assembly comprises two floating balls, wherein the two floating balls are respectively located on both sides of the floating body, elastic cables are connected to the floating balls, and the bottom ends of the elastic cables are connected to anchors, and a plurality of mooring line groups are connected between the two floating balls, wherein the plurality of mooring line groups are distributed in a horizontal direction and pass through the floating body.

[0007] Preferably, the mooring line group includes two mooring main lines, which are respectively connected to two buoys, and a plurality of mooring branch line groups are connected between the two mooring main lines. The plurality of mooring branch line groups are distributed in a horizontal direction, and the mooring branch line group has two longitudinally distributed mooring branch lines, which pass through the floating body.

[0008] Preferably, the buoy comprises a top layer, a middle layer, an air cushion layer and a counterweight layer, and the top layer, the middle layer, the air cushion layer and the counterweight layer are sequentially distributed from top to bottom, and the two mooring branches in the mooring branch line group pass through the middle layer and the counterweight layer respectively.

[0009] Preferably, the top layer comprises a rubber layer, a wear-resistant layer and a film layer, the wear-resistant layer is laid on the rubber layer, the film layer is laid on the wear-resistant layer, and the photovoltaic panel is installed on the film layer.

[0010] Preferably, the air cushion layer has a plurality of air chambers, the floating body is provided with an air pump, and the air pump is connected to the plurality of air chambers through an air inflation tube.

[0011] Preferably, a plurality of vertical traction ropes are arranged in the buoy.

[0012] Preferably, the number of the float assembly is two, the two floats in one float assembly are respectively located at the front and rear sides of the float, and the two floats in the other float assembly are respectively located at the left and right sides of the float.

[0013] Preferably, it also includes a floating ball, the floating ball is filled with low-density gas, a photovoltaic panel is installed on the outer wall of the floating ball, and the floating ball is connected to the floating ball through a plurality of traction lines.

[0014] The beneficial effects of the present invention are as follows: A floating body with a counterweight layer and an air cushion layer structure is used in the technical solution to install photovoltaic panels. An elastic cable is arranged between the buoy and the anchor to resist the ups and downs of the sea surface caused by waves and tidal differences. The elastic cable is tilted to resist the wave and current load and ensure that the floating body moves within a fixed range. During the movement and tilt of the floating body, the wind-exposed area will increase significantly. The role of the floating body counterweight is to reduce the mooring tension caused by the wind load. The floating body is provided with an intermediate layer and a counterweight layer. The two mooring branches in the mooring branch line group pass through the intermediate layer and the counterweight layer respectively. The external tensile load generated by the wind and wave flow is borne by the mooring line group to avoid excessive tension on the floating body. In this way, the structure of the floating body, in combination with the structure of the mooring line group and the elastic cable, can make the overall force-bearing performance excellent, the ability to resist wave force strong, and the adaptability to a wider range of sea areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0016] Figure 1 It is a front view of the present invention;

[0017] Figure 2 This is a front view of the present invention without the floating ball installed;

[0018] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the A position in the middle;

[0019] Figure 4 It is a top view of the buoy assembly and the mooring line group in the present invention.

[0020] In the attached figure, 1-floating body, 2-floating ball, 3-elastic rope, 4-anchor, 5-mooring line group, 6-air pump, 7-floating ball, 8-traction line, 9-vertical traction rope,

[0021] 101-top layer, 102-middle layer, 103-air cushion layer, 104-weight layer,

[0022] 501-main anchor line, 502-branch anchor line. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0024] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0025] Example

[0026] like Figure 1-Figure 4 As shown, in this embodiment, an offshore photovoltaic system is provided, including a floating body 1 and a buoy assembly, wherein a photovoltaic panel is installed on the floating body 1, and the buoy assembly includes two buoys 2, wherein the two buoys 2 are respectively located on both sides of the floating body 1, and elastic cables 3 are connected to the buoys 2, wherein the bottom ends of the elastic cables 3 are connected to anchors 4, and a plurality of mooring line groups 5 are connected between the two buoys 2, wherein the plurality of mooring line groups 5 are distributed in a horizontal direction, and the mooring line groups 5 pass through the floating body 1.

[0027] The mooring line group 5 in this embodiment includes two mooring main lines 501, which are respectively connected to two buoys 2, and a plurality of mooring branch line groups are connected between the two mooring main lines 501. The plurality of mooring branch line groups are distributed in a horizontal direction, and the mooring branch line group has two longitudinally distributed mooring branch lines 502, and the mooring branch lines 502 pass through the floating body 1.

[0028] In this embodiment, the float assembly is provided with two, the two floats 2 in one float assembly are respectively located at the front and rear sides of the float 1, and the two floats 2 in the other float assembly are respectively located at the left and right sides of the float 1.

[0029] The floating body 1 in this embodiment includes a top layer 101, a middle layer 102, an air cushion layer 103 and a counterweight layer 104, and the top layer 101, the middle layer 102, the air cushion layer 103 and the counterweight layer 104 are distributed in sequence from top to bottom, and the two mooring branches 502 in the mooring branch line group pass through the middle layer 102 and the counterweight layer 104 respectively.

[0030] In this embodiment, a plurality of mooring line groups 5 are evenly distributed along the horizontal direction, and in this embodiment, a plurality of mooring branch line groups within the mooring line group 5 are evenly distributed along the horizontal direction.

[0031] In this embodiment, a floating body 1 having a counterweight layer 104 and an air cushion layer 103 is used to install photovoltaic panels. An elastic cable 3 is connected between the buoy 2 and the anchor 4 to resist the ups and downs of the sea surface caused by waves and tidal differences. The elastic cable 3 is tilted to resist the wave and current load and ensure that the floating body 1 moves within a fixed range. During the movement and tilting of the floating body 1, the wind-exposed area will increase significantly. The role of the counterweight of the floating body 1 is to reduce the mooring tension caused by the wind load. The floating body 1 has an intermediate layer 102 and a counterweight layer 104. The two mooring branches 502 in the mooring branch line group pass through the intermediate layer 102 and the counterweight layer 104 respectively. The external tensile load generated by the wind and wave flow is borne by the mooring line group 5 to prevent the floating body 1 from being subjected to excessive tension. In this way, the structure of the floating body 1, combined with the structure of the mooring line group 5 and the elastic cable 3, can make the overall force performance excellent, the ability to resist wave force is strong, and the adaptability to a wider range of sea areas.

[0032] In this embodiment, the top layer 101 includes a rubber layer, a wear-resistant layer and a film layer. The wear-resistant layer is laid on the rubber layer, the film layer is laid on the wear-resistant layer, and the photovoltaic panel is installed on the film layer.

[0033] In this embodiment, the middle layer 102 is a solid layer, and the middle layer 102 and the weight layer 104 can be made of non-metallic materials that are resistant to compression, wear and corrosion.

[0034] In this embodiment, the air cushion layer 103 has a plurality of air chambers, and an air pump 6 is provided on the float 1, and the air pump 6 is connected to the plurality of air chambers through an air inflation tube. In this embodiment, the material of the air cushion layer 103 can be flexible or a soft elastic structure. In this embodiment, wear-resistant and scratch-resistant materials are provided around the air cushion layer 103. The air pump 6 is independently connected to each air chamber, and leakage of one air chamber does not affect the use of other air chambers. The power supply of the air pump 6 comes from photovoltaics.

[0035] In the present embodiment, a plurality of vertical traction ropes 9 are arranged in the floating body 1. In the present embodiment, vertical traction ropes 9 are arranged, and the vertical traction ropes 9 are connected with the top layer 101, the middle layer 102, the air cushion layer 103 and the counterweight layer 104 in the floating body 1, so as to further improve the overall rigidity.

[0036] The present embodiment also includes a floating ball 7, which is filled with low-density gas, and a photovoltaic panel is installed on the outer wall of the floating ball 7. The floating ball 7 is connected to the floating ball 2 through multiple traction lines 8. In the present embodiment, on the basis of the water surface photovoltaic system, a floating ball 7 is set in the air, and a photovoltaic panel is installed on the surface of the floating ball 7 to improve the lighting efficiency. In the specific setting, photovoltaic panels are laid on the side walls and top walls of the floating ball 7. At the same time, the height setting of the floating ball 7 should ensure that the obstruction of the floating body 1 on the water surface is minimized, thereby improving the power generation efficiency. In the present embodiment, the total power generation cable is arranged inside the traction line 8. In the present embodiment, the floating ball 7 can be an elliptical shape, a flat shape, a wing shape, or other shapes that reduce wind loads.

[0037] This technical solution has a simple structure, clear force, and high reliability. The material is simple, easy to make, low overall cost, and easy to mass produce. This technical solution has strong wind and wave resistance and is suitable for sea area light, which can greatly improve the utilization rate of unit sea surface and improve the comprehensive power generation capacity.

[0038] In this embodiment, the anchor 4 can be a gravity anchor, a grip anchor or a pile anchor.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. An offshore photovoltaic system, characterized in that: The invention comprises a floating body (1) and a floating ball assembly, wherein a photovoltaic panel is installed on the floating body (1), and the floating ball assembly comprises two floating balls (2), wherein the two floating balls (2) are respectively located on both sides of the floating body (1), an elastic cable (3) is connected to the floating balls (2), and the bottom end of the elastic cable (3) is connected to an anchor (4), and a plurality of mooring line groups (5) are connected between the two floating balls (2), wherein the plurality of mooring line groups (5) are distributed in a horizontal direction, and the mooring line groups (5) pass through the floating body (1).

2. An offshore photovoltaic system according to claim 1, characterized in that: The mooring line group (5) comprises two main mooring lines (501), the two main mooring lines (501) are respectively connected to two buoys (2), a plurality of branch mooring line groups are connected between the two main mooring lines (501), the plurality of branch mooring line groups are distributed in a horizontal direction, and the branch mooring line group comprises two longitudinally distributed branch mooring lines (502), and the branch mooring lines (502) pass through the floating body (1).

3. An offshore photovoltaic system according to claim 2, characterized in that: The floating body (1) comprises a top layer (101), a middle layer (102), an air cushion layer (103) and a counterweight layer (104); the top layer (101), the middle layer (102), the air cushion layer (103) and the counterweight layer (104) are arranged in sequence from top to bottom; and two mooring branch lines (502) in the mooring branch line group pass through the middle layer (102) and the counterweight layer (104) respectively.

4. An offshore photovoltaic system according to claim 3, characterized in that: The top layer (101) comprises a rubber layer, a wear-resistant layer and a film layer, the wear-resistant layer is laid on the rubber layer, the film layer is laid on the wear-resistant layer, and the photovoltaic panel is installed on the film layer.

5. The offshore photovoltaic system according to claim 3, characterized in that: The air cushion layer (103) has a plurality of air chambers therein, and an air pump (6) is provided on the floating body (1), and the air pump (6) is connected to the plurality of air chambers via an air inflation pipe.

6. An offshore photovoltaic system according to claim 3, characterized in that: A plurality of vertical traction ropes (9) are arranged inside the floating body (1).

7. An offshore photovoltaic system according to claim 1, characterized in that: The float assembly is provided in two pieces, the two floats (2) in one float assembly are respectively located on the front and rear sides of the float (1), and the two floats (2) in the other float assembly are respectively located on the left and right sides of the float (1).

8. The offshore photovoltaic system according to claim 1, characterized in that: It also comprises a floating ball (7), wherein the floating ball (7) is filled with low-density gas, a photovoltaic panel is installed on the outer wall of the floating ball (7), and the floating ball (7) is connected to the floating ball (2) via a plurality of traction lines (8).

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