Offshore photovoltaic power generation and wave power generation integrated power generation system

Abstract

The utility model discloses an offshore photovoltaic power generation and wave energy power generation integrated power generation system, belongs to the technical field of new energy, and can solve the problem of high construction cost caused by the fact that an existing photovoltaic power generation system reduces the influence of environmental load. The system comprises a fixed photovoltaic support, the bottom of which is fixed on the seabed and the top of which is higher than the sea surface; the floating type photovoltaic support floats in a sea surface surrounding area defined by the fixed type photovoltaic support and is flexibly connected with the fixed type photovoltaic support; the plurality of photovoltaic modules are arranged on the fixed photovoltaic bracket and the floating photovoltaic bracket; the wave energy power generation device is arranged on the fixed photovoltaic support, located on the sea surface and used for converting wave energy into electric energy. The device is used for new energy power generation.

Description

Technical Field

[0001] This utility model relates to an integrated power generation system for marine photovoltaic power generation and wave energy power generation, belonging to the field of new energy technology. Background Technology

[0002] Offshore photovoltaic (PV) power generation systems are generally divided into fixed PV systems and floating PV systems. Fixed PV systems often require a large number of pile foundations driven into the seabed to ensure the system can withstand marine environmental loads, but this large number of pile foundations leads to higher construction costs. Floating PV systems, on the other hand, are more susceptible to environmental loads such as waves, resulting in less stable power generation efficiency. To mitigate the impact of environmental loads and enhance system stability, they often require sufficiently strong floating bodies and mooring systems, which significantly increases the cost of floating PV systems. Summary of the Invention

[0003] This invention provides an integrated power generation system combining offshore photovoltaic power generation and wave energy generation, which can solve the problem of high construction costs in existing photovoltaic power generation systems due to the need to reduce environmental impact.

[0004] This utility model provides an integrated power generation system for offshore photovoltaic power generation and wave energy generation, the system comprising:

[0005] Fixed photovoltaic support structure, with its bottom fixed to the seabed and its top above the sea surface;

[0006] The floating photovoltaic support floats within the sea area enclosed by the fixed photovoltaic support and is flexibly connected to the fixed photovoltaic support.

[0007] Multiple photovoltaic modules are mounted on the fixed photovoltaic support and the floating photovoltaic support;

[0008] The wave energy generation device is mounted on the fixed photovoltaic support and located on the sea surface, and is used to convert wave energy into electrical energy.

[0009] Optionally, the fixed photovoltaic support includes:

[0010] Multiple fixed support units are fixed on the seabed, forming the enclosed area on the sea surface, and are flexibly connected to the floating photovoltaic support; the wave energy generation device is connected to the multiple fixed support units.

[0011] Optionally, the fixed support unit includes:

[0012] The pile foundation is fixed at the bottom to the seabed and at the top above the sea level.

[0013] A support frame is installed on top of the pile foundation for mounting the photovoltaic modules; the floating photovoltaic support is flexibly connected to the pile foundation; and the wave energy power generation device is connected to the pile foundation.

[0014] Optionally, the floating photovoltaic support includes:

[0015] A floating support array floats within the area enclosed by the sea surface;

[0016] A mooring assembly, disposed on the float assembly and the pile foundation, is used to connect the float assembly to a plurality of pile foundations.

[0017] Optionally, the floating support array includes:

[0018] Multiple floating support units float within the enclosed area on the sea surface and are interconnected; the mooring assembly is connected to the floating support units.

[0019] Optionally, the wave energy generation device includes:

[0020] Multiple wave energy generation units are connected between two adjacent pile foundations.

[0021] Optionally, the wave energy generation unit includes:

[0022] Two sleeves are respectively installed on two adjacent pile foundations;

[0023] The power generation component has its two ends connected to two sleeves respectively; the power generation component is located on the sea surface and is used to convert wave energy into electrical energy.

[0024] Optionally, the power generation component includes:

[0025] A rotating shaft, with its two ends rotatably connected to two adjacent sleeves;

[0026] The wing plate is connected to the rotating shaft and can drive the rotating shaft to rotate under the action of ocean waves;

[0027] A generator, connected to the rotating shaft, is used to convert the mechanical energy of the rotating shaft into electrical energy.

[0028] Optionally, there are multiple wing plates, which are arranged along the axial or radial direction of the rotating shaft.

[0029] Optionally, there are multiple power generation components, which are arranged at different heights of the bushing.

[0030] The beneficial effects that this utility model can produce include:

[0031] This invention, by setting up floating photovoltaic (PV) supports within the enclosed area of ​​fixed PV supports, reduces the amount of pile foundation required for fixed PV supports, lowering construction costs. Furthermore, the fixed PV supports provide mooring conditions for the floating PV supports, enhancing their stability and achieving a complementary advantage between the two systems. Simultaneously, by installing wave energy generation devices on the fixed PV supports, this invention reduces wave loads, mitigates the impact of wave action on both fixed and floating PV supports, and converts wave energy into electrical energy, improving the overall power generation efficiency of the system. Attached Figure Description

[0032] Figure 1 A schematic diagram of the structure of the integrated marine photovoltaic and wave energy power generation system provided in this embodiment of the utility model;

[0033] Figure 2 A half-sectional view of an integrated marine photovoltaic and wave energy power generation system provided in an embodiment of this utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the fixed support unit provided in the embodiment of the present utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the floating support unit provided in an embodiment of the present utility model;

[0036] Figure 5 A schematic diagram of the wave energy generation unit provided in an embodiment of this utility model.

[0037] Figure label:

[0038] 1. Fixed photovoltaic support; 11. Pile foundation; 12. Support frame; 2. Floating photovoltaic support; 21. Floating body; 22. Support rod; 23. Mooring assembly; 24. Connecting lug; 3. Wave power generation device; 31. Wing plate; 32. Rotating shaft; 33. Generator; 34. Casing; 4. Photovoltaic module; 5. Seabed. Detailed Implementation

[0039] The present invention will now be described in detail with reference to the embodiments, but the present invention is not limited to these embodiments.

[0040] This utility model embodiment provides an integrated power generation system for offshore photovoltaic power generation and wave energy generation, such as Figure 1 and Figure 2 As shown, the system includes:

[0041] A fixed photovoltaic support 1 is fixed at its bottom to the seabed 5 and at its top above the sea surface;

[0042] The floating photovoltaic support 2 floats within the sea area enclosed by the fixed photovoltaic support 1 and is flexibly connected to the fixed photovoltaic support 1.

[0043] Multiple photovoltaic modules 4 are mounted on a fixed photovoltaic support 1 and a floating photovoltaic support 2;

[0044] The wave energy generation device 3 is mounted on the fixed photovoltaic support 1 and located on the sea surface, and is used to convert wave energy into electrical energy.

[0045] Specifically, the fixed photovoltaic mounting bracket 1 may include:

[0046] Multiple fixed support units are fixed on the seabed 5, forming an enclosed area on the sea surface, and are flexibly connected to the floating photovoltaic support 2; the wave energy power generation device 3 is connected to the multiple fixed support units.

[0047] In this embodiment, the sea surface enclosed area formed by multiple fixed support units is rectangular, that is, the shape of the fixed photovoltaic support 1 is rectangular.

[0048] Specifically, the long rectangular side of the fixed photovoltaic support 1 can face the main wave direction, so that the system receives more wave energy, which is beneficial to increasing the power generation of the wave energy power generation device 3; or the short rectangular side of the fixed photovoltaic support 1 can face the main wave direction, which is beneficial to reducing the impact of wave load on the fixed photovoltaic support 1 and the floating photovoltaic support 2.

[0049] Specifically, such as Figure 3 As shown, the fixed support unit may include:

[0050] The pile foundation 11 is fixed at its bottom to the seabed 5 and its top is above the sea surface;

[0051] A support frame 12 is set on top of the pile foundation 11 for installing photovoltaic modules 4; a floating photovoltaic bracket 2 is flexibly connected to the pile foundation 11; and a wave energy power generation device 3 is connected to the pile foundation 11.

[0052] Specifically, the pile foundation 11 may include multiple pipe piles. In this embodiment, the pile foundation 11 includes four pipe piles, and the support frame 12 is connected to the top of the four pipe piles.

[0053] Specifically, the pipe piles can be steel pipe piles or precast concrete pipe piles, and can be installed on the seabed 5 by means of piling or driving. The support frame 12 can be made of steel and can be installed on the top of the pipe pile by means of welding or bolting.

[0054] Specifically, the floating photovoltaic support 2 may include:

[0055] A floating support array, floating within an enclosed area on the sea surface;

[0056] Mooring assembly 23, disposed on the float assembly and pile foundation 11, is used to connect the float assembly to the multiple pile foundations 11.

[0057] Specifically, the mooring assembly 23 may include a mooring cable and connecting assemblies disposed at both ends of the mooring cable. The mooring cable may include structures such as ropes, anchor chains, and anchor cables, and the connecting assemblies are used to connect the mooring cable to the floating body assembly or the pile foundation 11.

[0058] Specifically, the floating support array may include:

[0059] Multiple floating support units float in the enclosed area on the sea surface and are interconnected; the mooring assembly 23 is connected to the floating support units.

[0060] In this embodiment, multiple floating support units are spliced ​​together to form a complete floating support array, and the mooring assembly 23 is connected to the floating support unit located at the outer edge.

[0061] Specifically, such as Figure 4 As shown, the floating support unit may include:

[0062] The float 21 floats in the area enclosed by the sea surface. The side of the float 21 has a connecting lug 24 for connecting with an adjacent float 21 or mooring assembly 23.

[0063] Support rod 22 is set on float 21, with its bottom end fixedly connected to the top of float 21, and its top end used to install photovoltaic module 4.

[0064] Specifically, the connecting lugs 24 on adjacent floats 21 can be flexibly connected using hinges, ropes or other connectors. This releases a certain degree of freedom, allowing the floats 21 to move relative to each other with the waves. This relative movement is mainly rotation, thereby reducing the interaction force between adjacent floats 21.

[0065] Specifically, the float 21 can be made of steel, composite materials, etc. The support rod 22 is installed on the float 21 to support the photovoltaic module 4. It can transfer the wind load on the photovoltaic module 4 to the float 21, thereby reducing the impact of wind load on the photovoltaic module 4.

[0066] Specifically, the wave energy generation device 3 may include:

[0067] Multiple wave energy generation units are connected between two adjacent pile foundations 11.

[0068] Specifically, such as Figure 5 As shown, a wave energy generation unit may include:

[0069] Two sleeves 34 are respectively fitted onto two adjacent pile foundations 11;

[0070] The power generation component is connected at both ends to two sleeves 34; the power generation component is located on the sea surface and is used to convert wave energy into electrical energy.

[0071] Specifically, such as Figure 5 As shown, the power generation components may include:

[0072] The rotating shaft 32 has its two ends rotatably connected to two adjacent sleeves 34;

[0073] The wing plate 31 is connected to the rotating shaft 32, and it can drive the rotating shaft 32 to rotate under the action of the waves.

[0074] The generator 33 is connected to the rotating shaft 32 and is used to convert the mechanical energy of the rotating shaft 32 into electrical energy.

[0075] Specifically, there can be multiple wing plates 31, and the multiple wing plates 31 can be arranged along the axial or radial direction of the rotating shaft 32.

[0076] In this embodiment, three wing plates 31 are arranged along the axial direction of each rotating shaft 32.

[0077] Specifically, there can be multiple power generation components, which can be installed at different heights in the sleeve 34. In this way, even if the sea level changes with the tides, the power generation components located at the corresponding heights can still interact with the waves to reduce the wave load, while converting wave energy into electrical energy, ensuring the stability of energy dissipation and power generation.

[0078] This invention, by setting up a floating photovoltaic support 2 within the enclosed area of ​​a fixed photovoltaic support 1, reduces the amount of pile foundation required for the fixed photovoltaic support 1, lowering construction costs. Furthermore, the fixed photovoltaic support 1 provides mooring conditions for the floating photovoltaic support 2, enhancing its stability and achieving complementary advantages between the two systems. Simultaneously, by installing a wave energy generation device 3 on the fixed photovoltaic support 1, this invention reduces wave load, weakens the impact of waves on both the fixed and floating photovoltaic supports 1 and 2, and converts wave energy into electrical energy, improving the overall power generation efficiency of the system.

[0079] The above description is merely a few embodiments of this application and is not intended to limit this application in any way. Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any changes or modifications made by those skilled in the art without departing from the scope of the technical solution of this application using the disclosed technical content are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. An integrated offshore photovoltaic and wave energy power generation system, characterized in that, The system comprises: a fixed photovoltaic support, the bottom of which is fixed on the seabed and the top of which is higher than the sea surface; a floating photovoltaic support, which floats in a sea surface enclosed area enclosed by the fixed photovoltaic support and is flexibly connected with the fixed photovoltaic support; a plurality of photovoltaic components arranged on the fixed photovoltaic support and the floating photovoltaic support; a wave energy power generation device arranged on the fixed photovoltaic support and located on the sea surface, which is used for converting wave energy into electric energy.

2. The system of claim 1, wherein, The fixed photovoltaic support comprises: a plurality of fixed support units, which are fixed on the seabed, enclose the sea surface enclosed area, and are flexibly connected with the floating photovoltaic support; the wave energy power generation device is connected to the plurality of fixed support units.

3. The system of claim 2, wherein, The fixed support unit comprises: a pile foundation, the bottom of which is fixed on the seabed and the top of which is higher than the sea surface; a support frame arranged on the top of the pile foundation and used for mounting the photovoltaic components; the floating photovoltaic support is flexibly connected with the pile foundation; the wave energy power generation device is connected to the pile foundation.

4. The system of claim 3, wherein, The floating photovoltaic support comprises: a floating support array, which floats in the sea surface enclosed area; a mooring assembly arranged on the floating support array and the pile foundation and used for connecting the floating support array with the plurality of pile foundations.

5. The system of claim 4, wherein, The floating support array comprises: a plurality of floating support units, which float in the sea surface enclosed area and are connected with each other; the mooring assembly is connected with the floating support units.

6. The system of claim 3, wherein, The wave energy power generation device comprises: a plurality of wave energy power generation units, which are respectively connected between adjacent two pile foundations.

7. The system of claim 6, wherein, The wave energy power generation unit comprises: two sleeves, which are respectively sleeved on adjacent two pile foundations; a power generation component, the two ends of which are respectively connected to the two sleeves; the power generation component is located on the sea surface and is used for converting wave energy into electric energy.

8. The system of claim 7, wherein, The power generation component comprises: a rotating shaft, the two ends of which are respectively rotatably connected to adjacent two sleeves; a wing plate, which is connected with the rotating shaft and can drive the rotating shaft to rotate under the action of sea waves; a generator, which is connected with the rotating shaft and is used for converting the mechanical energy of the rotating shaft into electric energy.

9. The system of claim 8, wherein, The wing plate is a plurality of wing plates, which are arranged along the axial direction or the radial direction of the rotating shaft.

10. The system of claim 7, wherein, The power generation component is a plurality of power generation components, which are arranged at different heights of the sleeves.

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