Offshore floating type photovoltaic platform foundation capable of actively diving and avoiding danger

Abstract

The invention discloses an offshore floating type photovoltaic platform foundation capable of actively diving and avoiding risks, and belongs to the field of offshore photovoltaic technologies. Comprising a floating type photovoltaic platform and a mooring buoy, and the mooring buoy penetrates through the floating type photovoltaic platform through a guide wheel; the floating type photovoltaic platform comprises a floating platform and a photovoltaic platform body, the photovoltaic platform body is installed above the floating platform through stand columns, and a photovoltaic assembly installation bearing platform is arranged on the photovoltaic platform body. According to the offshore floating type photovoltaic platform foundation capable of actively diving to avoid danger, technical factors and construction cost are comprehensively considered, and the concept of actively diving to avoid a severe storm environment is adopted in the extreme sea conditions such as typhoons with short time and high sea conditions, so that the load level of the design working condition of the structure can be reduced, and the service life of the photovoltaic platform foundation is prolonged. The purpose of improving the self-storage capacity of the floating type photovoltaic foundation based on the general manufacturing cost level is achieved.

Description

Technical Field

[0001] The present invention relates to the field of offshore photovoltaic technology, and in particular to an offshore floating photovoltaic platform foundation capable of actively diving to avoid risks. Background Art

[0002] Under the trend of renewable resource development and utilization, the development of offshore photovoltaics will help promote the improvement of the coordinated operation capability of my country's new power system and provide an ideal optimization plan for the development plan of the energy industry. The advantage of offshore photovoltaics is that it can use the vast sea area to build photovoltaic power stations on a large scale and improve the efficiency of photovoltaic power generation in combination with the characteristics of the marine environment. However, under high sea conditions, the sea surface is windy and the waves are high, and the environmental load that the offshore photovoltaic foundation needs to bear is much higher than the load on land or onshore waters. The photovoltaic foundation that was widely used in onshore waters in the past has a weak ability to resist wind and waves and is therefore not suitable for direct promotion to the application in the marine environment. In recent years, fixed offshore photovoltaic foundations have gradually matured and have been built on a large scale in nearshore shallow waters with a water depth of less than 20m. However, as the water depth increases, the construction cost of fixed offshore photovoltaics that rely on pile foundations will inevitably increase significantly. In view of this, in order to meet the needs of offshore photovoltaic resource development to develop deepwater areas far away from the coast, it is of great practical significance to develop a new type of floating photovoltaic foundation suitable for harsh marine wind and wave environments.

[0003] At present, the research on floating offshore photovoltaic foundations is in the stage of gradually moving from conceptual design to engineering practice. Typical design schemes include thin-film type, small waterplane-flexible array type and semi-submersible type. The main technical innovation of these conceptual designs is to reduce the motion response of the floating foundation in waves by optimizing the hydrodynamic performance of the floating foundation and improving the positioning capability of the mooring system to adapt to the harsh marine environment. However, the existing design schemes of floating photovoltaic foundations still have problems of immature technology or high cost in the face of extremely harsh sea conditions such as typhoons. Summary of the invention

[0004] The purpose of the present invention is to provide an offshore floating photovoltaic platform foundation that actively dives to avoid risks, which solves the problem that the design scheme of the existing floating photovoltaic foundation still has the problem of immature technology or too high cost when facing extremely severe sea conditions such as typhoons.

[0005] To achieve the above-mentioned purpose, the present invention provides an offshore floating photovoltaic platform foundation that actively dives to avoid danger, comprising a floating photovoltaic platform and a mooring buoy, wherein the mooring buoy penetrates the floating photovoltaic platform through a guide wheel; The floating photovoltaic platform comprises a floating platform and a photovoltaic platform. The photovoltaic platform is installed above the floating platform through columns, and a photovoltaic component installation platform is provided on the photovoltaic platform.

[0006] Preferably, the floating platform and the photovoltaic platform are one of hexagonal, triangular or rectangular structures.

[0007] Preferably, the photovoltaic module mounting platform is a mesh structure, and the angle between the structure and the horizontal plane is acute.

[0008] Preferably, a ballast tank and a compressed air tank are provided inside the floating platform.

[0009] Preferably, the mooring buoy is a column-type structure.

[0010] Preferably, the mooring buoy includes a fixed ballast tank arranged at the bottom, mooring points are arranged at the center of both sides of the fixed ballast tank, a ballast tank 2 is installed above the fixed ballast tank, an empty tank is installed above the ballast tank 2, a compressed air tank 2 is arranged above the empty tank, and an equipment cabin is arranged above the compressed air tank 2.

[0011] Preferably, both mooring points are connected with mooring anchor chains.

[0012] Therefore, the present invention adopts the above-mentioned structure of an active diving and risk-avoiding offshore floating photovoltaic platform foundation, which has the following beneficial effects: The present invention comprehensively considers technical factors and construction costs, and adopts the concept of active diving to avoid severe wind and wave environments when facing extreme sea conditions such as typhoons with short duration and high sea conditions, thereby reducing the load level of the design working conditions of the structure and achieving the purpose of improving the self-storage capacity of the floating photovoltaic foundation based on the general cost level.

[0013] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side structural schematic diagram of an offshore floating photovoltaic platform foundation that actively dives to avoid danger according to the present invention; Figure 2 This is a schematic diagram of the connection between a floating platform and a mooring buoy of an offshore floating photovoltaic platform foundation that actively dives to avoid danger according to the present invention; Figure 3 A schematic diagram of the side structure of a floating photovoltaic platform which is the foundation of an offshore floating photovoltaic platform that actively dives to avoid danger according to the present invention; Figure 4 This is a schematic diagram of a top view of the structure of a photovoltaic component installation platform of an offshore floating photovoltaic platform that actively dives to avoid risks according to the present invention; Figure 5 This is a schematic diagram of the mooring buoy structure of the foundation of an offshore floating photovoltaic platform that actively dives to avoid danger according to the present invention; Figure 6This is a schematic diagram of a top view of the structure of a mooring buoy of an offshore floating photovoltaic platform foundation that actively dives to avoid danger according to the present invention; Figure 7 This is a schematic diagram of the side view structure of a mooring buoy of an offshore floating photovoltaic platform foundation that actively dives to avoid danger according to the present invention; Figure 8 The present invention is a schematic diagram of a floating platform structure which is the foundation of an offshore floating photovoltaic platform that actively dives to avoid risks.

[0015] Reference numerals 1. Floating photovoltaic platform, 2. Mooring buoy, 3. Guide wheel, 11. Floating platform, 12. Photovoltaic platform, 13. Photovoltaic module installation base, 14. Column, 15. Ballast tank one, 16. Compressed air tank one, 21. Fixed ballast tank, 22. Ballast tank two, 23. Empty tank, 24. Compressed air tank two, 25. Equipment cabin, 26. Mooring point, 27. Mooring anchor chain. DETAILED DESCRIPTION

[0016] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0017] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] Example like Figure 1-8 As shown, the present invention provides an offshore floating photovoltaic platform foundation that actively dives to avoid danger, including a floating photovoltaic platform 1 and a mooring buoy 2, wherein the mooring buoy 2 penetrates the floating photovoltaic platform 1 through a guide wheel 3; The floating photovoltaic platform 1 comprises a floating platform 11 and a photovoltaic platform 12 . The photovoltaic platform 12 is installed above the floating platform 11 through columns 14 , and a photovoltaic component mounting platform 13 is provided on the photovoltaic platform 12 .

[0019] The floating platform 11 and the photovoltaic platform 12 are hexagonal, triangular or rectangular structures.

[0020] The photovoltaic module mounting platform 13 is a mesh structure, and the angle between it and the horizontal plane is an acute angle.

[0021] A ballast tank 15 and a compressed air tank 16 are provided inside the floating platform 11.

[0022] The mooring buoy 2 is a column-type structure.

[0023] The mooring buoy 2 includes a fixed ballast tank 21 arranged at the bottom, mooring points 26 are arranged at the center of both sides of the fixed ballast tank 21, a ballast tank 22 is installed above the fixed ballast tank 21, an empty tank 23 is installed above the ballast tank 22, a compressed air tank 24 is arranged above the empty tank 23, and an equipment cabin 25 is arranged above the compressed air tank 24. Mooring anchor chains 27 are connected to the two mooring points 26.

[0024] Working principle: The offshore floating photovoltaic platform foundation that actively dives to avoid risks floats on the sea surface under normal sea conditions, and dives to a certain depth underwater to avoid excessive loads when encountering extreme sea conditions such as typhoons, and floats up and returns to a general floating operation state after the sea conditions return to normal. The offshore floating photovoltaic platform foundation that actively dives to avoid risks mainly consists of two parts, a floating photovoltaic platform 1 and a mooring buoy 2. The floating photovoltaic platform 1 and the mooring buoy 2 are connected by a sliding guide wheel 3 to facilitate the floating and diving operations.

[0025] Offshore moored buoys usually adopt a design model that is integrated with the mooring system below them, such as floating marine platforms, floating wind turbines, etc. If the mooring system of an active disaster avoidance offshore floating photovoltaic foundation follows this design model, the floating photovoltaic foundation diving to avoid disasters will inevitably cause the configuration of the mooring cable below to relax and weaken its mooring stiffness, thereby reducing the mooring system's ability to constrain the motion response of the floating photovoltaic foundation. In order to maintain the positioning ability of the mooring system when the floating photovoltaic foundation is diving to avoid disasters, the present invention proposes a design concept that the floating photovoltaic foundation is supported by a mooring system, and the floating photovoltaic foundation and the mooring system are separated in the vertical direction to maintain the independence of the vertical movement of the two, thereby avoiding the problem of the loosening of the mooring cable configuration and the reduction of the stiffness of the mooring system caused by the floating photovoltaic foundation diving to avoid disasters.

[0026] The floating photovoltaic platform 1 can be arranged in a hexagonal, triangular, rectangular or other planar layout. Such a structure can be spliced ​​through a distributed layout to adapt to the layout of photovoltaic power stations of different scales and sea surface conditions (the present invention takes a hexagonal shape as an example).

[0027] The height of the columns 14 arranged on the vertical surface of the floating photovoltaic platform 1 and the design of the double-layer grid structure of the support provide a certain air gap for the photovoltaic module installation support 13. In the large-scale shaking and swaying motion response of the floating photovoltaic foundation, the wave impact on the photovoltaic module installation support 13 can be effectively reduced.

[0028] The buoyancy of the floating photovoltaic platform 1 is provided by a regular hexagonal frame-type floating platform 11, which is assembled by cylindrical shapes that meet the buoyancy requirements. The frame design of the floating platform 11 can obtain a larger area to set up the upper photovoltaic platform with a smaller waterline area, thereby providing a sufficiently large layout area for the photovoltaic module installation platform; the floating platform 11 uses a longer radial buoy to obtain a larger waterline area moment, thereby meeting the stability requirements of the floating photovoltaic foundation; during construction, the photovoltaic platform 12 can be prefabricated in blocks and assembled on site, which is conducive to improving construction efficiency.

[0029] In order to realize the diving and floating operation of the floating photovoltaic platform, a ballast tank 15 and a compressed air tank 16 are set in the floating platform at the bottom. The floating photovoltaic platform is submerged by seawater ballast, and the floating platform is realized by releasing compressed air to discharge seawater. After the compressed air is released, the compressed air tank needs to be filled manually for the next floating operation.

[0030] The mooring buoy 2 structure adopts a column-type structure with a lower extension. The extended part as a ballast tank 22 can provide good stability and can also serve as a support for the photovoltaic platform in a submerged state; the column-type structure design has good stability, such as Figure 7 shown.

[0031] The mooring buoy is provided with a ballast tank 22 at its lower part and a compressed air tank 24 above the ballast tank. When the floating photovoltaic foundation is in a floating operation state, a certain ballast is preset in the ballast tank 22 of the mooring buoy. When the floating photovoltaic foundation dives to avoid disasters and is carried on the mooring buoy base, the mooring buoy 2 releases compressed air to empty the ballast tank, thereby increasing its own buoyancy to provide the support required by the submerged floating photovoltaic foundation.

[0032] Therefore, the present invention adopts the above-mentioned active diving risk-avoiding offshore floating photovoltaic platform foundation, comprehensively considers technical factors and construction costs, and adopts the concept of active diving to avoid severe wind and wave environment when facing extreme sea conditions such as typhoons with short duration and high sea conditions, thereby reducing the load level of the design working conditions of the structure, and achieving the purpose of improving the self-sustaining capacity of the floating photovoltaic foundation based on the general cost level.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. An offshore floating photovoltaic platform foundation that actively dives to avoid danger, characterized by: It comprises a floating photovoltaic platform and a mooring buoy, wherein the mooring buoy penetrates the floating photovoltaic platform through a guide wheel; The floating photovoltaic platform comprises a floating platform and a photovoltaic platform. The photovoltaic platform is installed above the floating platform through columns, and a photovoltaic component installation platform is provided on the photovoltaic platform.

2. According to claim 1, an active diving and risk-avoiding offshore floating photovoltaic platform foundation is characterized by: The floating platform and the photovoltaic platform are one of hexagonal, triangular or rectangular structures.

3. According to claim 1, the active diving and risk avoidance offshore floating photovoltaic platform foundation is characterized by: The photovoltaic component mounting support is a mesh structure, and the angle between the photovoltaic component mounting support and the horizontal plane is an acute angle.

4. According to claim 1, the active diving and risk avoidance offshore floating photovoltaic platform foundation is characterized by: A ballast tank and a compressed air tank are arranged inside the floating platform.

5. The active diving and risk-avoiding offshore floating photovoltaic platform foundation according to claim 1 is characterized by: The mooring buoy is a column-type structure.

6. The active diving and risk-avoiding offshore floating photovoltaic platform foundation according to claim 1, characterized in that: The mooring buoy includes a fixed ballast tank arranged at the bottom, mooring points are arranged at the center of both sides of the fixed ballast tank, a ballast tank 2 is installed above the fixed ballast tank, an empty tank is installed above the ballast tank 2, a compressed air tank 2 is arranged above the empty tank, and an equipment cabin is arranged above the compressed air tank 2.

7. The active diving and risk-avoiding offshore floating photovoltaic platform foundation according to claim 6 is characterized by: Both mooring points are connected with mooring anchor chains.

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