Offshore floating type photovoltaic power generation platform

Abstract

An offshore floating type photovoltaic power generation platform comprises a plurality of photovoltaic group strings and a mooring system, and is characterized in that each photovoltaic group string comprises a plurality of photovoltaic modules capable of floating on the sea surface, the photovoltaic modules are sequentially hinged to form the photovoltaic group string, the photovoltaic group string has two states, in the first state, the photovoltaic modules are arranged in a stacked mode, and in the second state, the photovoltaic modules are arranged in a stacked mode; in the first state, the plurality of photovoltaic modules are spread in sequence to enable the photovoltaic string to be in a folded state, and in the second state, the plurality of photovoltaic modules are spread in sequence to enable the photovoltaic string to be in an unfolded state; the plurality of photovoltaic group strings in an unfolded state can be sequentially hinged to form a photovoltaic array, the plurality of mooring systems are arranged on the periphery of the photovoltaic array, and each mooring system comprises a plurality of mooring ropes directly or indirectly connected with the photovoltaic array. The offshore floating type photovoltaic power generation platform has the advantages that the offshore floating type photovoltaic power generation platform is modularized, and the production cost is reduced; the offshore photovoltaic platform is convenient to transport and install, the photovoltaic group strings are in a folded state in the transportation process and can be rapidly unfolded on the sea, and the transportation and installation cost of each watt is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to ocean photovoltaic platform technical field especially, relates to a kind of offshore floating photovoltaic power generation platform. BACKGROUND

[0002] Offshore photovoltaic power generation platform is important facility for developing and utilizing offshore solar energy resources, and can be divided into two categories according to its support structure characteristics, namely fixed type and floating type offshore photovoltaic power generation platform. Among them, offshore floating photovoltaic power generation platform is to float photovoltaic modules on the water surface for power generation through floating structure, which saves land resources, reduces the shading and component temperature that photovoltaic modules may be subjected to, and can achieve better power generation efficiency, thereby gradually developing into an important part of marine clean new energy.

[0003] At present, offshore floating photovoltaic power generation platform can be divided into two types, rigid semi-submersible platform and flexible membrane platform. The semi-submersible platform is shown in Chinese patent application No. CN202410721204.8 (application publication No. CN118560652A), which includes photovoltaic modules, floating support structure and mooring system. The floating support structure can support the photovoltaic modules and is connected with the mooring system. The flexible membrane platform is shown in Chinese patent application No. CN202411545989.4 (application publication No. CN119058903A), which includes membrane, photovoltaic panel, first mounting position and second mounting position. The membrane is installed between the first mounting position and the second mounting position, and a plurality of photovoltaic panels are installed on the membrane. The first mounting position and / or the second mounting position are provided with floating bodies and connected with mooring ropes, so that the photovoltaic panels can float on the sea for power generation.

[0004] However, the success of offshore floating photovoltaic power generation depends on its economy. The existing offshore floating photovoltaic power generation platform faces the following problems: (1) it is difficult to build and transport, low efficiency and high cost. The above-mentioned semi-submersible platform belongs to large marine engineering equipment, which occupies a large space during construction and transportation, requires a large special construction site close to the shoreline and professional marine engineering equipment capacity, and the single transportable installed capacity is only kilowatt level; (2) it is difficult to mass-produce and install the existing offshore floating photovoltaic power generation platform. The photovoltaic panels of the above-mentioned flexible membrane platform need to be customized, and personnel need to install photovoltaic panels one by one on the membrane on the water surface, which is not convenient for rapid mass production, and it is difficult to improve the economy of offshore floating photovoltaic power generation platform. Therefore, further improvement is needed for offshore floating photovoltaic power generation platform. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide an offshore floating photovoltaic power generation platform that can be mass-produced and is convenient for transportation and installation in view of the above-mentioned prior art status.

[0006] The utility model discloses a kind of offshore floating photovoltaic power generation platforms, including multiple photovoltaic module strings and mooring system, it is characterized by: the photovoltaic module string includes multiple photovoltaic modules capable of floating on sea surface, multiple photovoltaic modules are hingedly formed photovoltaic module string in turn, the photovoltaic module string has two states, in the first state, multiple photovoltaic modules are arranged in stack, make the photovoltaic module string be in folded state, in the second state, multiple photovoltaic modules are spread in turn, make the photovoltaic module string be in unfolded state;Multiple photovoltaic module strings in unfolded state can be hingedly formed photovoltaic array in turn, multiple mooring systems are arranged in the periphery of photovoltaic array, and the mooring system includes multiple mooring ropes which are directly or indirectly connected with photovoltaic array.

[0007] As a kind of scheme of photovoltaic module, preferably, the photovoltaic module includes photovoltaic assembly, frame and floating plate, the photovoltaic assembly is fixed on frame, the floating plate is inlayed and fixed in the cavity of frame, the periphery of the frame is respectively provided with multiple hinged pieces, and the adjacent two photovoltaic modules are hinged by hinged piece.This photovoltaic assembly is manufactured according to industry standard, and photovoltaic module is in turn photovoltaic assembly, frame and floating plate from top to bottom, so that the volume of photovoltaic module is smaller, the volume of photovoltaic module stacked is also smaller, even the space occupied by photovoltaic module string folded is smaller, and the floating plate of the photovoltaic module can float in seawater, so that photovoltaic module can float on sea surface.

[0008] As a kind of scheme of photovoltaic module hinge, preferably, the hinged piece includes hinge seat and connecting rod, the hinge seat is fixed on the outer end of frame, and the two ends of the connecting rod are respectively hinged on two opposite hinge seats.The hinged piece can make the rotation of two connected photovoltaic modules 360 degrees, and then make the photovoltaic module string connected by multiple photovoltaic modules switch between the first state and the second state.

[0009] As a kind of scheme that photovoltaic assembly is fixed on frame, preferably, multiple limit rods are fixed on the top surface of frame, multiple limit rods enclose installation space corresponding to photovoltaic assembly, after the photovoltaic assembly is placed in installation space, the limit rod is installed with pressing block, and the pressing block can compress photovoltaic assembly.Photovoltaic assembly is placed in installation space, limit rod can limit horizontal movement of photovoltaic assembly, and pressing block can limit vertical movement of photovoltaic assembly and separate from installation space, so that photovoltaic assembly is fixed on frame.

[0010] As preferred, the limit rod is screw rod, and the pressing block is nut.Screw rod is welded on frame, and nut is anti-loose nut, and anti-loose nut is threadedly connected with screw rod to compress photovoltaic assembly.

[0011] As a solution of the mooring system, preferably, the mooring system comprises a first sub-cable device capable of floating on the sea surface, the mooring rope comprises a plurality of first mooring ropes and second mooring ropes, a plurality of connection points for collecting the first mooring ropes are arranged on the first sub-cable device, one end of the first mooring rope is connected with the photovoltaic module on the peripheral edge side of the photovoltaic array, and the other end of the first mooring rope is connected with at least two first mooring ropes at each connection point on the first sub-cable device, and one second mooring rope is connected with each connection point on the first sub-cable device. The stress on the at least two first mooring ropes is transmitted to the second mooring rope, and the first mooring rope and the second mooring rope form a hierarchical force transmission path through the first sub-cable device, so that the plurality of mooring points of the mooring system are collected, and the offshore floating photovoltaic power generation platform is more stable.

[0012] Preferably, the first sub-cable device is a float pipe. The float pipe can float on the sea surface, and a plurality of connection points can be arranged on the float pipe. The float pipe is convenient for batch manufacturing, and the production cost is relatively low.

[0013] Further design, the mooring system further comprises a second sub-cable device capable of floating on the sea surface, the mooring rope further comprises a third mooring rope, one end of the second mooring rope is connected with the corresponding connection point of the first sub-cable device, the other end is connected with the second sub-cable device, one end of the third mooring rope is connected with the second sub-cable device, and the other end is connected to the seabed anchoring. The second sub-cable device collects the stress of all the second mooring ropes on the third mooring rope, and the third mooring rope is connected with the mooring anchoring on the seabed, so that the stress of the photovoltaic array is finally transmitted to the seabed through the multi-stage force transmission path.

[0014] Preferably, the second sub-cable device is a buoy. The buoy can float on the sea surface and can collect a plurality of mooring ropes.

[0015] Further design, the mooring system further comprises a mooring anchoring, and adjacent photovoltaic arrays share the mooring anchoring. Sharing the mooring anchoring can effectively reduce the occupation of the marine space and improve the utilization rate of the marine area.

[0016] Compared with the prior art, the mooring system has the following advantages:

[0017] (1) The photovoltaic array of the offshore floating photovoltaic power generation platform is composed of a plurality of photovoltaic strings, and the photovoltaic string is composed of a plurality of photovoltaic modules, so that the offshore floating photovoltaic power generation platform is modularized, the photovoltaic module can be manufactured in batches in an intelligent manufacturing mode, and the production cost of the offshore floating photovoltaic power generation platform is reduced.

[0018] (2) the photovoltaic module of the photovoltaic module string is stacked and arranged in the first state during transportation, so that the photovoltaic module string becomes a cuboid structure, thereby reducing the space occupied by the photovoltaic module string during transportation, and the offshore floating photovoltaic power generation platform is convenient to transport;

[0019] (3) the photovoltaic module of the photovoltaic module string is stacked and arranged in the first state during transportation, so that the photovoltaic module string becomes a cuboid structure, thereby reducing the space occupied by the photovoltaic module string during transportation, and the offshore floating photovoltaic power generation platform is convenient to transport;

[0020] (4) the photovoltaic module of the photovoltaic module string is stacked and arranged in the first state during transportation, so that the photovoltaic module string becomes a cuboid structure, thereby reducing the space occupied by the photovoltaic module string during transportation, and the offshore floating photovoltaic power generation platform is convenient to transport;

[0021] (5) the mooring system of the offshore floating photovoltaic power generation platform includes a plurality of mooring ropes, one end of part of the mooring ropes is directly connected with the photovoltaic array, and the other end is connected with the remaining mooring ropes, so that the mooring system forms a multi-stage force transmission path, and the stability of the offshore floating photovoltaic platform is better. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of an embodiment of the utility model;

[0023] Figure 2 is a top view of Figure 1

[0024] Figure 3 is a top view of the mooring system in the embodiment of the utility model;

[0025] Figure 4 is a top view of the mooring anchor shared by two photovoltaic arrays in the embodiment of the utility model;

[0026] Figure 5 is a top view of the photovoltaic array in the embodiment of the utility model;

[0027] Figure 6 is a process diagram of the photovoltaic module string changing from the first state to the second state in the embodiment of the utility model;

[0028] ​Figure 7 It is a structure diagram of the photovoltaic module in the embodiment of the utility model.

[0029] Figure 8 It is a structure diagram of the hinge in the embodiment of the utility model. DETAILED DESCRIPTION

[0030] The utility model will be described further in detail below in combination with the embodiment of the drawings.

[0031] As Figures 1-8 shown, it is the best embodiment of the utility model.

[0032] As Figures 1-4 shown, the offshore floating photovoltaic power generation platform of the embodiment includes photovoltaic array 3 and mooring system 4, and multiple mooring systems 4 are arranged at the periphery of photovoltaic array 3. Wherein, the mooring system 4 of the embodiment includes multiple mooring ropes 41, first cable divider 42, second cable divider 43 and mooring anchorage 44, first cable divider 42 and second cable divider 43 can all float on the sea surface, first cable divider 42 is a float pipe, second cable divider 43 is a buoy, and mooring anchorage 44 is fixed on the seabed, and adjacent photovoltaic array 3 can share mooring anchorage 44, and the sharing of mooring anchorage 44 can effectively reduce the occupation of marine space and improve the utilization rate of marine area.

[0033] The mooring rope 41 of the embodiment is directly or indirectly connected with photovoltaic array 3, so that the mooring system 4 forms a multi-stage force transmission path. Specifically, the mooring rope 41 of the embodiment includes multiple first mooring ropes 411, multiple second mooring ropes 412 and one third mooring rope 413, the first cable divider 42 is provided with multiple connection points for collecting the first mooring ropes 411, one end of each first mooring rope 411 is connected with one photovoltaic module 2 at the four peripheral edge sides of photovoltaic array 3, the other end of two adjacent first mooring ropes 411 is connected with one connection point on the first cable divider 42, so that the two first mooring ropes 411 are collected on the first cable divider 42, and the connection point of the first cable divider 42 is also connected with one end of one second mooring rope 412, the other end of the second mooring rope 412 is connected with the second cable divider 43, the first cable divider 42 transmits the force of the first mooring ropes 411 to the second mooring rope 412, and the force of all second mooring ropes 412 is collected on the second cable divider 43, one end of the third mooring rope 413 is connected with the second cable divider 43, and the other end is connected with the mooring anchorage 44, the second cable divider 43 transmits the force of the second mooring rope 412 to the third mooring rope 413, and the third mooring rope 413 is fixed on the mooring anchorage 44, so that the mooring system 4 forms a multi-stage force transmission path, so that the stability of the offshore floating photovoltaic platform is better.

[0034] As Figure 5As shown, the photovoltaic array 3 in this embodiment is composed of multiple photovoltaic strings 1 in an unfolded state, which are hinged together sequentially. Each photovoltaic string 1 includes multiple photovoltaic modules 2 capable of floating on the sea surface. The photovoltaic modules 2 are cuboid in shape. Multiple photovoltaic modules 2 are hinged together sequentially using hinge members 5 to form the photovoltaic string 1. The photovoltaic string 1 has two states. In the first state, the photovoltaic modules 2 are stacked, causing the photovoltaic string 1 to be in a folded state. In the second state, the multiple photovoltaic modules 2 are unfolded sequentially, causing the photovoltaic string 1 to be in an unfolded state. The process of the photovoltaic string 1 changing from the first state to the second state is as follows: Figure 6 As shown. In this embodiment, the photovoltaic string 1 has a good folding effect, with a folding scaling ratio of up to 1:10. For example, if the photovoltaic string 1 in the folded state is 5 meters long, 2.4 meters wide, and 1.2 meters high, then the photovoltaic string 1 in the unfolded state on the sea surface is 50 meters long, 2.4 meters wide, and 0.12 meters high, making the deployment efficiency of the photovoltaic array 3 higher.

[0035] like Figure 7 As shown, the photovoltaic module 2 in this embodiment includes a photovoltaic module 21, a frame 22, and a floating plate 23. The photovoltaic module 21 is fixed on the frame 22, and the floating plate 23 is embedded and fixed in the cavity of the frame 22. The floating plate 23 can float in seawater, thereby allowing the photovoltaic module 2 to float on the sea surface. To fix the photovoltaic module 21 to the frame 22, multiple limiting rods 221 are fixed on the frame 22. The limiting rods 221 are screws that can be welded to the frame 22. The multiple limiting rods 221 form an installation space corresponding to the photovoltaic module 21. The limiting rods 221 can restrict the lateral movement of the photovoltaic module 21. After the photovoltaic module 21 is placed in the installation space, a pressure block 222 is installed on the limiting rod 221. The pressure block 222 is an anti-loosening nut. The nut is threadedly connected to the screw to press the photovoltaic module 21. The pressure block 222 can restrict the vertical movement of the photovoltaic module 21 and remove it from the installation space, thereby fixing the photovoltaic module 21 to the frame 22. Therefore, the photovoltaic module 2 in this embodiment is smaller in size, and the photovoltaic string 1 composed of the photovoltaic module 2 is also smaller when folded, which makes it easier to reduce the volume occupied by the photovoltaic string 1 during transportation, thereby making the offshore floating photovoltaic power generation platform easier to transport.

[0036] In addition, in this embodiment, the frame 22 is provided with multiple hinges 5 around its perimeter, and two adjacent photovoltaic modules 2 are hinged together by the hinges 5. Specifically, as shown... Figure 8 As shown, the hinge 5 in this embodiment includes a hinge seat 51 and a connecting rod 52. The hinge seat 51 is fixed to the outer end of the frame 22, and the two ends of the connecting rod 52 are respectively hinged to two opposite hinge seats 51. The hinge 5 enables the two connected photovoltaic modules 2 to rotate 360 ​​degrees, so that the photovoltaic string 1 formed by multiple photovoltaic modules 2 connected in series can switch between the first state and the second state.

[0037] The workflow of the embodiment is as follows:

[0038] A. During transportation, the photovoltaic module string 1 is in the first state, and the photovoltaic module 2 of the photovoltaic module string 1 is stacked and arranged by means of the hinge 5, so that the photovoltaic module string 1 becomes a smaller cuboid structure;

[0039] B. When the offshore floating photovoltaic power generation platform is installed on the sea surface, the photovoltaic module string 1 in the first state is stretched, and the plurality of photovoltaic modules 2 are sequentially laid out, so that the photovoltaic module string 1 becomes the second state, i.e., the photovoltaic module string 1 is in the unfolded state, and then the plurality of photovoltaic module strings 1 in the unfolded state are sequentially hinged to form the photovoltaic array 3;

[0040] C. Then, the mooring system 4 is installed around the photovoltaic array 3, i.e., one end of the first mooring cable 411 is connected to the photovoltaic module 2 around the edge side of the photovoltaic array 3, and the other end is connected to the connection point of the first cable divider 42, one end of the second mooring cable 412 is connected to the connection point of the first cable divider 42, and the other end is connected to the second cable divider 43, one end of the third mooring cable 413 is connected to the second cable divider 43, and the other end is connected to the mooring anchor 44, so that the mooring system 4 forms a multi-stage force transmission path, thereby completing the installation of the offshore floating photovoltaic power generation platform;

[0041] D. During the operation of the offshore floating photovoltaic power generation platform on the sea, the photovoltaic module 2 in the photovoltaic array 3 moves with the fluctuation of the sea surface waves.

[0042] The offshore floating photovoltaic power generation platform of the present application can be applied to offshore wind farms, "wind and light in the same field", port areas not filled with seawater, nuclear power water discharge areas, seawater desalination, direct hydrogen production from seawater (green fuels such as methanol and ammonia), island off-grid community microgrid, etc. scenes; It can also be used on land and water surfaces other than the sea.

Claims

1. Offshore floating photovoltaic power generation platform comprising a plurality of photovoltaic strings (1) and a mooring system (4), characterized in that: The photovoltaic module (2) comprises a photovoltaic assembly (21), a frame (22) and a floating plate (23), the photovoltaic assembly (21) is fixed on the frame (22), the floating plate (23) is inlaidly fixed in the cavity of the frame (22), and a plurality of hinge parts (5) are arranged at the periphery of the frame (22).

2. The offshore floating photovoltaic power plant according to claim 1, characterized in that: The hinge part (5) comprises a hinge seat (51) and a connecting rod (52), the hinge seat (51) is fixed at the outer end of the frame (22), and the two ends of the connecting rod (52) are hingedly connected to two opposite hinge seats (51).

3. The offshore floating photovoltaic power plant according to claim 2, characterized in that: The frame (22) is provided with a plurality of limiting rods (221) fixed on the top surface, the limiting rods (221) surround an installation space corresponding to the photovoltaic assembly (21), and the limiting rods (221) are provided with pressing blocks (222) after the photovoltaic assembly (21) is placed in the installation space.

4. The offshore floating photovoltaic power generation platform according to claim 2, characterized in that: The limiting rod (221) is a screw rod, and the pressing block (222) is a nut.

5. The offshore floating photovoltaic power plant according to claim 4, characterized in that: The mooring system (4) comprises a first sub-cable connector (42) capable of floating on the sea surface, the mooring cable (41) comprises a plurality of first mooring cables (411) and second mooring cables (412), the first sub-cable connector (42) is provided with a plurality of connection points for collecting the first mooring cables (411), one end of the first mooring cable (411) is connected with the photovoltaic module (2) at the periphery edge side of the photovoltaic array (3), each connection point of the first sub-cable connector (42) is connected with the other end of at least two first mooring cables (411), and each connection point of the first sub-cable connector (42) is also connected with a second mooring cable (412).

6. The floating photovoltaic power plant according to any one of claims 1 to 5, characterized in that: The first sub-cable connector (42) is a floating pipe.

7. The offshore floating photovoltaic power plant according to claim 6, characterized in that: The mooring system (4) further comprises a second sub-cable connector (43) capable of floating on the sea surface, the mooring cable (41) further comprises a third mooring cable (413), one end of the second mooring cable (412) is connected with the corresponding connection point of the first sub-cable connector (42), the other end is connected with the second sub-cable connector (43), one end of the third mooring cable (413) is connected with the second sub-cable connector (43), and the other end is connected to the seabed anchoring.

8. The offshore floating photovoltaic power plant according to claim 6, characterized in that: The second sub-cable connector (43) is a buoy.

9. The offshore floating photovoltaic power plant according to claim 8, characterized in that: ​ 10. The offshore floating photovoltaic power plant according to claim 1, characterized in that: The mooring system (4) also comprises a mooring anchor (44) which is shared by adjacent photovoltaic arrays (3).

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