Floating type offshore photovoltaic platform module

Abstract

The invention discloses a floating type offshore photovoltaic platform module which comprises a floating body assembly with a wave absorbing characteristic, a main body steel frame on the middle layer and a photovoltaic assembly on the upper layer. The floating body assembly is formed by splicing four floating body modules, the center of the floating body assembly is hollowed out to form a rectangular-ambulatory-plane shape, each floating body module is provided with a wave absorbing structure, and the floating body modules are connected with the main body steel frame through flexible connecting pieces to provide buoyancy for the platform; the main body steel frame is of a square structure and comprises a plurality of I-shaped steel and photovoltaic supports, and the connecting part of the bottom of the main body steel frame and the floating body assembly is formed by arranging the I-shaped steel in the single direction in parallel. And the photovoltaic module is laid on I-shaped steel at the top of the main body steel frame. By optimizing the structural design, the platform module structure has wave absorbing and flow guiding functions, the wind and wave resisting performance of the platform is improved, and it is ensured that the platform stably operates in the complex marine environment; the platform modules can be flexibly assembled into a large-scale floating type offshore photovoltaic platform, the manufacturing and mounting difficulty of the floating type offshore photovoltaic platform can be reduced, and the cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of floating offshore photovoltaic platforms, and in particular to a floating offshore photovoltaic platform module. Background Art

[0002] Solar energy is a clean, renewable energy source. With increasing global energy demand and increasing emphasis on environmental protection, solar power generation technology has garnered widespread attention and application. Floating offshore photovoltaic platforms, as an emerging solar power generation method, offer enormous development potential, leveraging the vast ocean and abundant sunlight resources. However, due to the complex and volatile marine environment, floating offshore photovoltaic platforms face numerous technical challenges in practical application, including poor wind and wave resistance, complex structures, and difficult design and analysis.

[0003] Existing floating offshore photovoltaic platforms primarily include semi-submersible offshore photovoltaic platforms based on buoy foundations, buoy array offshore photovoltaic platforms, multi-buoy offshore photovoltaic platforms, separate-floating-frame floating platforms, and hexagonal floating platforms. The first types of platforms with buoy foundations have buoys as their floating base; separate-floating-frame floating platforms have a frame-like foundation, while hexagonal floating platforms have a lattice-like structure. While these structures have proven suitable for marine environments, their high cost makes them unsuitable for commercial deployment. Furthermore, existing floating offshore photovoltaic platforms are complex in structure, with cumbersome manufacturing and installation processes, making them unsuitable for mass production.

[0004] Floating offshore photovoltaic platforms present significant challenges in terms of wind and wave resistance and structural complexity. First, due to the complex and volatile marine environment, waves can exert significant impact on floating structures, easily damaging them. Second, existing floating offshore photovoltaic platforms are complex in structure, with cumbersome and expensive manufacturing and installation processes, hindering mass production and commercialization.

[0005] Therefore, it is necessary to develop new floating offshore photovoltaic platform modules to overcome the above problems. Summary of the Invention

[0006] Purpose of the invention: In response to the shortcomings and defects of the existing technology, the present invention provides a floating offshore photovoltaic platform module. By optimizing the structural design, the platform module structure has the function of wave absorption and flow diversion, thereby improving the platform's wind and wave resistance and ensuring the stable operation of the platform in complex marine environments; the platform modules can be flexibly assembled into a large-scale floating offshore photovoltaic platform, which can reduce the difficulty of manufacturing and installation of floating offshore photovoltaic platforms, reduce costs, and improve the platform's mass production capacity.

[0007] Technical solution: A floating offshore photovoltaic platform module of the present invention is characterized in that it includes a floating body assembly with wave-breaking properties, a main steel frame in the middle layer, and a photovoltaic assembly in the upper layer; the floating body assembly is spliced ​​together by 4 floating body modules, and the center is hollowed out into a circular shape. Each floating body module is provided with a wave-breaking structure, and the floating body module is connected to the main steel frame through a flexible connector to provide buoyancy for the platform; the main steel frame is a square structure, and the main steel frame includes several I-beams and photovoltaic brackets, and the connection part between the bottom of the main steel frame and the floating body assembly is composed of I-beams arranged in parallel in a single direction; the photovoltaic assembly is laid on the I-beam on the top of the main steel frame.

[0008] Wherein, a grid plate is provided at the middle of the bottom of the floating body assembly.

[0009] Among them, mooring cables are provided at four diagonal positions on the bottom of the floating assembly, and the floating offshore photovoltaic platform module is moored using a multi-point mooring method.

[0010] Among them, the main steel frame includes horizontally arranged I-beams, longitudinally arranged I-beams, vertical I-beams, bottom longitudinal I-beams and flexible connectors.

[0011] Among them, the connection part between the top of the main steel frame and the photovoltaic module includes 9 horizontally arranged I-beams and 8 longitudinally arranged I-beams. The horizontally arranged I-beams and the longitudinally arranged I-beams are cross-welded, and the vertical I-beams are welded and fixed at the intersection of the top cross I-beams. The bottom longitudinal I-beam is welded and fixed to the bottom of the vertical I-beam. The bottom of the bottom longitudinal I-beam is connected and fixed to the floating module through a flexible connector, which plays a role in buffering the movement of the floating body.

[0012] Among them, a circular through hole, a semi-cylindrical groove and a trapezoidal groove are provided at the bottom of the floating module, square grooves are opened on both sides of the long side of the end of the floating module, and a square boss is provided on the short side of the end of the floating module. The square groove and the square boss are pin connection parts.

[0013] The size of the square groove is larger than that of the square boss, and two holes for inserting the pins are respectively provided at corresponding positions of the square groove and the square boss.

[0014] The photovoltaic assembly includes a plurality of photovoltaic panel modules, and the photovoltaic panel modules are arranged in a rectangular frame formed by the intersection of horizontal and vertical beams on the top of the main steel frame.

[0015] Wherein, the photovoltaic panel module is fixed on the main steel frame through edge clamps and center clamps.

[0016] Wherein, the edge fixture includes a first pressing block and a first bolt; the center fixture includes a second pressing block and a second bolt.

[0017] Beneficial effects: Compared with the existing technology, the present invention has the following significant advantages: the floating offshore photovoltaic platform has significant advantages in manufacturing cost, installation process, monitoring and maintenance convenience, flexibility of application scenarios and resistance to wind and waves, and is expected to promote the development and application of floating offshore photovoltaic platforms.

[0018] This invention is cost-effective: The modular design of this technology reduces the complexity of the manufacturing process, making the manufacturing process relatively simple and cost-effective. Compared with existing technologies, the platform of this invention can reduce manufacturing costs while maintaining performance, thereby improving the return on investment.

[0019] The installation process of the present invention is simple: the technical solution adopts a modular design and combines simple assembly methods such as pins and clamps, which can improve the flexibility and efficiency of installation, shorten the installation period, and reduce the requirements for weather and environmental conditions.

[0020] The present invention is convenient for regular maintenance and monitoring: the technical solution designs a grid structure that is convenient for maintenance personnel to settle down, which can conveniently maintain and replace photovoltaic components, thereby improving their efficiency and lifespan.

[0021] Flexible Assembly: The floating offshore photovoltaic platform's structural design is flexible and adaptable to varying marine environments and photovoltaic panel placement requirements. Compared to existing technologies, the platform's structural design offers more adjustment and configuration options, improving its adaptability and practicality.

[0022] The present invention has certain wind and wave resistance performance: the technical solution designs a floating body with bottom openings and concave-convex structures, which has the function of wave breaking and diverting, and to a certain extent buffers the movement of the floating body caused by waves. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0025] Figure 3 Schematic diagram of the top view of the floating body assembly of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the main steel frame of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the floating body module of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the latch of the present invention;

[0029] Figure 7is a schematic structural diagram of a photovoltaic module of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the edge clamp of the present invention;

[0031] Figure 9 It is a structural schematic diagram of the center fixture of the present invention;

[0032] In the figure, 1 is the main steel frame; 11 is the horizontally arranged I-beam; 12 is the longitudinally arranged I-beam; 13 is the vertical I-beam; 14 is the bottom longitudinal I-beam; 15 is the flexible connector; 2 is the float assembly; 21 is the float module; 22 is the circular through hole; 23 is the semi-cylindrical groove; 24 is the trapezoidal groove; 25 is the square groove; 26 is the square boss; 27 is the hole; 28 is the pin; 3 is the photovoltaic assembly; 31 is the photovoltaic panel module; 32 is the edge fixture; 321 is the pressure block 1; 322 is the bolt 1; 33 is the center fixture; 331 is the pressure block 2; 332 is the bolt 2; 4 is the mooring cable; 5 is the grid plate. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0034] The floating offshore photovoltaic platform module of the present invention includes three parts: a floating foundation with wave-breaking properties, an intermediate photovoltaic support, and an upper photovoltaic module. The floating foundation is composed of four floating units spliced ​​together, with the center hollowed out into a U-shaped shape. Each floating unit is designed with a wave-breaking structure and is connected to the intermediate photovoltaic support through a flexible connection to provide buoyancy for the platform. The intermediate photovoltaic support is a square structure composed of a number of I-beam columns and photovoltaic supports welded together. The top of the photovoltaic support and the photovoltaic module are connected and fixed with bolts, and the bottom of the support and the floating body are connected by I-beams arranged in parallel in a single direction. The photovoltaic modules are laid on the top I-beam. The floating offshore photovoltaic platform also includes a grid plate placed in the center of the bottom floating body to facilitate the movement of installation and maintenance personnel. Mooring cables are installed at the four diagonal positions at the bottom of the floating module. After the platform module is used to assemble a large-scale floating offshore photovoltaic platform, the large-scale floating offshore photovoltaic platform can be moored using a multi-point mooring method.

[0035] The I-beams and columns that make up the steel frame modules are prefabricated standard parts and can be welded and assembled on-site. The overall structural dimensions of the photovoltaic platform can also be flexibly adjusted to meet actual application requirements by increasing or decreasing the number or length of I-beams and columns in the main steel frame.

[0036] Example:

[0037] The floating offshore photovoltaic platform module of this embodiment includes a floating assembly 2 with wave-absorbing properties, a main steel frame 1 in the middle layer, and a photovoltaic assembly 3 on the upper layer. A grid plate 5 is provided in the middle of the bottom of the floating assembly 2, and mooring cables 4 are provided at the four diagonal positions at the bottom of the floating assembly 2.

[0038] The main steel frame 1 includes transversely arranged I-beams 11, longitudinally arranged I-beams 12, vertical I-beams 13, bottom longitudinal I-beams 14 and flexible connectors 15. The main steel frame 1 is a square structure, which is composed of several standard I-beams of different lengths that are cross-welded. The connection part between the top of the main steel frame 1 and the photovoltaic module 3 is composed of nine transversely arranged I-beams 11 and eight longitudinally arranged I-beams 12 that are cross-welded. The vertical I-beam 13 is welded and fixed at the intersection of the top cross I-beams. The bottom longitudinal I-beam 14 is welded and fixed to the bottom of the vertical I-beam 13. The bottom of the bottom longitudinal I-beam 14 is connected and fixed to the floating module 21 through a flexible connector 15, which plays a role in buffering the movement of the floating body. All I-beams are standard prefabricated parts, and the length and quantity can be flexibly adjusted according to the required area of ​​the actual photovoltaic module.

[0039] The float assembly 2 is connected to the main steel frame 1 via a flexible connector 15. The float assembly 2 is composed of four standardized float modules 21. A circular through-hole 22, a semi-cylindrical groove 23, and a trapezoidal groove 24 are arranged below each float module 21. The addition of through-holes and irregular grooves at the bottom of the float can, to a certain extent, cushion the movement of the float caused by waves. Adjacent float modules 21 are connected by pins. Square grooves 25 are provided on both sides of the long sides of the ends of each float module 21, and square bosses 26 are designed on the short sides of the ends. The grooves and square bosses serve as pin connection points. The grooves are slightly larger than the bosses to ensure smooth insertion. Two holes 27 are provided at the corresponding positions of the grooves and bosses for inserting pins 28. This method of assembling the float assembly using pins 28 simplifies the process and facilitates on-site construction and maintenance, reducing installation time and maintenance costs. The four float modules 21 are connected end to end to form a stable float assembly 2. A grid plate 5 is placed in the hollowed-out center of the floating assembly 2 to facilitate access for construction / maintenance personnel, allowing for monitoring, maintenance, and repairs during operation. Mooring cables 4 are installed and fixed to four diagonal corners at the bottom of the floating assembly to constrain the overall movement of the floating photovoltaic platform.

[0040] The photovoltaic assembly 3 is placed atop the main steel frame 1 and consists of several photovoltaic panel modules 31. Each photovoltaic panel module 31 is placed within a rectangular frame formed by the intersection of the horizontal and vertical beams at the top of the main steel frame 1. Each photovoltaic panel module 31 is secured to the main steel frame 1 using edge clamps 32 and center clamps 33. The edge clamps 32 consist of a pressure block 321 and bolts 322, while the center clamps 33 consist of a pressure block 331 and bolts 332. This fixing method is simple to operate and facilitates installation and replacement.

[0041] All basic components are prefabricated standard parts and can be assembled on-site through welding, cutting, and assembly. The overall structural dimensions of the photovoltaic platform can also be flexibly adjusted according to actual application requirements by increasing or decreasing the number or length of the main steel frames and the number of floating modules.

[0042] This invention utilizes a modular design. The central steel frame, floats, and photovoltaic modules are all standard components, allowing for simple assembly and welding to create a complete floating photovoltaic structure. The porous wave-damping and flow-guiding design at the bottom of the float modules mitigates wave loads. The latch connection between adjacent float modules facilitates quick installation on site. A grid plate is installed in the center of the float to facilitate access for installation and maintenance personnel.

[0043] Compared with the prior art, the present invention solves the following problems:

[0044] 1. Poor wind and wave resistance: Existing floating offshore photovoltaic platforms have poor wind and wave resistance and are easily damaged by wave impact. This technical solution mainly optimizes the structural design. The proposed platform module structure has wave-breaking and flow-guiding functions, improving the platform's wind and wave resistance and ensuring stable operation in complex marine environments.

[0045] 2. Complex structure: Existing floating offshore photovoltaic platforms are complex in structure, and the manufacturing and installation processes are cumbersome, making them unsuitable for mass production. This technical solution primarily develops a structural design for floating offshore photovoltaic platforms. These modules can be flexibly assembled into large-scale floating offshore photovoltaic platforms, reducing the manufacturing and installation difficulty, lowering costs, and improving the platform's mass production capacity.

[0046] 3. Difficulty in design and analysis: Existing floating offshore photovoltaic platforms are difficult to design and analyze, which is not conducive to platform optimization and improvement. This technical solution mainly simplifies the structural design, reduces the difficulty of design and analysis, and improves the efficiency of platform optimization and improvement.

Claims

1. A floating offshore photovoltaic platform module, characterized by: The invention comprises a floating assembly (2) with wave-absorbing properties, a main steel frame (1) in the middle layer, and a photovoltaic assembly (3) in the upper layer; the floating assembly (2) is formed by splicing four floating modules (21), the center of which is hollowed out into a circular shape; each floating module (21) is provided with a wave-absorbing structure; the floating module (21) is connected to the main steel frame (1) through a flexible connector (15) to provide buoyancy for the platform; the main steel frame (1) is a square structure, the main steel frame (1) comprises a plurality of I-beams and photovoltaic brackets, and the connection portion between the bottom of the main steel frame (1) and the floating assembly (2) is formed by I-beams arranged in parallel in a single direction; the photovoltaic assembly (3) is laid on the I-beam at the top of the main steel frame (1).

2. The floating offshore photovoltaic platform module according to claim 1, characterized in that: A grid plate (5) is provided at the middle of the bottom of the floating body assembly (2).

3. The floating offshore photovoltaic platform module according to claim 1, characterized in that: Mooring cables (4) are provided at four diagonal positions on the bottom of the floating assembly (2), and the floating offshore photovoltaic platform module is moored using a multi-point mooring method.

4. The floating offshore photovoltaic platform module according to claim 1, characterized in that: The main steel frame (1) comprises transversely arranged I-beams (11), longitudinally arranged I-beams (12), vertical I-beams (13), bottom longitudinal I-beams (14) and flexible connectors (15).

5. The floating offshore photovoltaic platform module according to claim 4, characterized in that: The connection part between the top of the main steel frame (1) and the photovoltaic module (3) includes 9 horizontally arranged I-beams (11) and 8 longitudinally arranged I-beams (12), the horizontally arranged I-beams (11) and the longitudinally arranged I-beams (12) are cross-welded, the vertical I-beams (13) are welded and fixed at the intersection of the top cross I-beams, the bottom longitudinal I-beams (14) are welded and fixed to the bottom of the vertical I-beams (13), and the bottom of the bottom longitudinal I-beams (14) are connected and fixed to the floating module (21) through a flexible connector (15), which plays a role in buffering the movement of the floating body.

6. The floating offshore photovoltaic platform module according to claim 1, characterized in that: A circular through hole (22), a semi-cylindrical groove (23) and a trapezoidal groove (24) are provided below the float module (21); square grooves (25) are provided on both sides of the long side of the end of the float module (21); a square boss (26) is provided on the short side of the end of the float module (21); the square groove (25) and the square boss (26) are pin connection parts.

7. The floating offshore photovoltaic platform module according to claim 6, characterized in that: The size of the square groove (25) is larger than that of the square boss (26), and two holes (27) for inserting the latch (28) are respectively provided at corresponding positions of the square groove (25) and the square boss (26).

8. The floating offshore photovoltaic platform module according to claim 1, characterized in that: The photovoltaic assembly (3) comprises a plurality of photovoltaic panel modules (31), and the photovoltaic panel modules (31) are arranged in a rectangular frame formed by the intersection of horizontal and vertical beams on the top of the main steel frame (1).

9. The floating offshore photovoltaic platform module according to claim 8, characterized in that: The photovoltaic panel module (31) is fixed on the main steel frame (1) via edge clamps (32) and center clamps (33).

10. The floating offshore photovoltaic platform module according to claim 9, characterized in that: The edge fixture (32) includes a first pressing block (321) and a first bolt (322); the center fixture (33) includes a second pressing block (331) and a second bolt (332).

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