Frame type offshore floating solar photovoltaic equipment

Abstract

The invention relates to the technical field of offshore photovoltaic power generation, in particular to frame type offshore floating solar photovoltaic equipment. The equipment comprises a plurality of floating type photovoltaic modules, every two adjacent floating type photovoltaic modules are connected through two steel hinge pieces to form an array module, the stability of the photovoltaic equipment structure is improved, the floating type photovoltaic modules on the outer sides of the array modules are connected with concrete anchor blocks through anchor chain buckles and anchor chains to achieve buffer type mooring, and the floating type photovoltaic modules on the outer sides of the array modules are connected with the concrete anchor blocks through the anchor chain buckles and the anchor chains. The floating type photovoltaic module comprises a platform frame and a photovoltaic assembly, the photovoltaic assembly is arranged above the platform frame, the platform frame is provided with a buoy so that the array module can float on the sea, and the height of the platform frame is larger than the preset height so that the front face of the photovoltaic assembly can absorb light energy directly irradiated by the photovoltaic assembly and the back face of the photovoltaic assembly can absorb light energy reflected by the sea surface. Therefore, the power generation efficiency of the photovoltaic equipment is improved. Therefore, the technical scheme can improve the structural stability and the power generation efficiency of the photovoltaic equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of offshore photovoltaic power generation, and in particular to a frame-type offshore floating solar photovoltaic device. Background Art

[0002] The existing floating solar photovoltaic power generation equipment in China is mainly used in lakes, reservoirs and other environments with less wind, wave and current conditions, but these structures are not suitable for offshore photovoltaics. The existing photovoltaic power generation platforms have poor wind and wave resistance and are easily damaged. In addition, the overall height of the existing photovoltaic power generation platforms is low, and the photovoltaic power generation components are easily attached to organisms due to sea waves, or salt stains appear on the photovoltaic power generation components, which affects the power generation efficiency and the service life of the photovoltaic power generation components.

[0003] Based on this, there is an urgent need for a frame-type offshore floating solar photovoltaic device to solve the problem of how to improve the structural stability and power generation efficiency of the photovoltaic device. Summary of the invention

[0004] The present invention provides a frame-type offshore floating solar photovoltaic device, which can improve the structural stability and power generation efficiency of the photovoltaic device.

[0005] An embodiment of the present invention provides a frame-type offshore floating solar photovoltaic device, comprising:

[0006] A plurality of floating photovoltaic modules, wherein two adjacent floating photovoltaic modules are connected by two hinges to form an array module, and the outermost floating photovoltaic module is connected to a concrete anchor block by an anchor chain buckle and an anchor chain;

[0007] The floating photovoltaic module comprises a platform frame and a photovoltaic assembly, wherein the photovoltaic assembly is arranged on the platform frame, the platform frame is provided with a buoy, and the height of the platform frame is greater than a preset height so that the photovoltaic assembly absorbs light directly irradiated thereon and light reflected thereon by the sea surface;

[0008] Wherein, the preset height is determined according to the wave phenomenon on the deck of the floating photovoltaic module.

[0009] It can be seen from the above scheme that the frame-type offshore floating solar photovoltaic device provided by the present invention includes: a plurality of floating photovoltaic modules, each two adjacent floating photovoltaic modules are connected by two hinges to form an array module, which improves the stability of the photovoltaic device structure, and the floating photovoltaic modules on the outside of the array module are connected to the concrete anchor block by anchor chain buckles and anchor chains to achieve buffered mooring, and the floating photovoltaic module includes a platform frame and a photovoltaic module, and the photovoltaic module is arranged above the platform frame, and the platform frame is provided with a buoy to realize the floating of the array module on the sea, and the height of the platform frame is greater than the preset height, so that the photovoltaic module can absorb the light energy directly irradiated to it on the front and absorb the light energy reflected by the sea surface on the back, so as to improve the power generation efficiency of the photovoltaic device, and the height of the waves can be determined by the wave phenomenon on the deck of the floating photovoltaic module, and by setting the height of the platform frame to be greater than the preset height (i.e., the wave height of the simulated wave), the photovoltaic module can be protected from seawater erosion, the service life of the photovoltaic power generation module can be extended, and the structural stability of the photovoltaic device can be improved. Therefore, the above technical scheme can improve the structural stability and power generation efficiency of the photovoltaic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 A frame-type offshore floating solar photovoltaic device is provided for an embodiment of the present invention;

[0012] Figure 2 This is a schematic diagram of the structure of a floating photovoltaic module in a specific embodiment of the present invention;

[0013] Figure 3 It is a bottom view and a front view of a single platform frame structure in a specific embodiment of the present invention;

[0014] Figure 4 This is a schematic diagram of the articulated connection of the platform in a specific embodiment of the present invention;

[0015] Figure 5 This is a schematic diagram of assembling a buoy in a specific embodiment of the present invention;

[0016] Figure 6 It is a schematic diagram of fender arrangement in a specific embodiment of the present invention;

[0017] Figure 7 This is a schematic diagram of the connection of the mooring system in a specific embodiment of the present invention;

[0018] Figure 8 It is a schematic diagram of a photovoltaic device in a specific embodiment of the present invention.

[0019] Reference numerals:

[0020] In the figure: 1. floating photovoltaic module; 2. hinge; 3. concrete anchor block; 4. platform frame; 5. photovoltaic module; 6. vertical plastic buoy; 7. horizontal plastic buoy; 8. first buoy connector; 9. second buoy connector; 11. anchor chain; 12. anchor chain buckle; 13. inner anti-collision fender; 14. steel frame cross beam; 15. steel frame main beam; 16. photovoltaic support seat; 17. platform bottom frame; 18. cross support frame; 19. photovoltaic fixing parts; 20. platform base. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 , an embodiment of the present invention provides a frame-type offshore floating solar photovoltaic device, the device includes a plurality of floating photovoltaic modules, two adjacent floating photovoltaic modules are connected by two hinges to form an array module, and the outermost floating photovoltaic module 1 is connected to a concrete anchor block 3 by an anchor chain buckle 12 and an anchor chain 11;

[0023] The floating photovoltaic module 1 includes a platform frame 4 and a photovoltaic assembly 5. The photovoltaic assembly 5 is arranged on the platform frame 4. The platform frame 4 is provided with a buoy. The height of the platform frame 4 is greater than a preset height so that the photovoltaic assembly 5 absorbs light directly irradiated thereon and light reflected thereon by the sea surface.

[0024] Among them, the preset height is determined based on the wave phenomenon on the deck of the floating photovoltaic module.

[0025] In this embodiment, the device includes a plurality of floating photovoltaic modules 1, and each two adjacent floating photovoltaic modules 1 are connected by two hinges to form an array module, which improves the stability of the photovoltaic device structure. The floating photovoltaic modules 1 on the outside of the array module are connected to the concrete anchor block by anchor chain buckles and anchor chains to achieve buffered mooring. The floating photovoltaic module 1 includes a platform frame and a photovoltaic module. The photovoltaic module is arranged above the platform frame, and the platform frame is provided with a buoy to enable the array module to float on the sea. The height of the platform frame is greater than the preset height, so that the photovoltaic module can absorb the light energy directly irradiated on it on the front and absorb the light energy reflected by the sea surface on the back, so as to improve the power generation efficiency of the photovoltaic device. The height of the waves can be determined by the wave phenomenon on the deck of the floating photovoltaic module 1. By setting the height of the platform frame to be greater than the preset height (i.e., the wave height simulating the wave), the photovoltaic module can be protected from seawater erosion and the structural stability of the photovoltaic device can be improved. Therefore, the above technical solution can improve the structural stability and power generation efficiency of the photovoltaic device.

[0026] In this embodiment, the hinge includes two sleeves respectively sleeved on the steel frame beam of the floating photovoltaic module 1, and the two sleeves are hinged to improve the stability of the floating photovoltaic module 1. The hinge is made of stainless steel, which has excellent corrosion resistance and oxidation resistance, can maintain good performance in harsh environments such as humidity, acid and alkali, and also has good strength and toughness.

[0027] It should also be noted that the buffered mooring system mainly reduces the impact force generated by the movement of the floating photovoltaic modules 1 by arranging buffer elements between the floating photovoltaic modules 1. These buffer elements usually have elastic or damping properties. For example, when the floating photovoltaic module 1 is displaced by external forces such as wind and waves, the common rubber buffer will undergo elastic deformation to absorb and store part of the energy. Just like the shock absorber of a car, it reduces vibration and impact force through compression and rebound. The floating photovoltaic module 1 will produce complex movements under the action of environmental loads such as waves and water currents, including roll, pitch, heave, etc. The buffered mooring system can convert the kinetic energy of the movement of the floating photovoltaic module 1 into the elastic potential energy of the buffer element or convert it into other forms of energy such as heat energy through damping for dissipation.

[0028] like Figure 2 As shown, in some embodiments, an inner anti-collision fender 13 is provided between two adjacent floating photovoltaic modules 1 . The inner anti-collision fender 13 is provided on the platform frame 4 . The inner anti-collision fender 13 is used to buffer the collision between the platform frames 4 .

[0029] In this embodiment, in the photovoltaic device, inner anti-collision fenders are arranged between adjacent floating photovoltaic modules. These fenders are arranged on the platform frame to buffer the collision between the platform frames. When the floating photovoltaic module is subjected to external forces such as water flow and waves, the module will be displaced. In this process, adjacent platform frames may collide with each other. The inner anti-collision fender is like a buffer device. When a collision is about to occur between the frames, it is the first to contact and bear the collision force. Its working principle is to absorb the collision energy through its own elastic or plastic deformation. For example, the fender made of rubber material will be squeezed and deformed during a collision, converting the kinetic energy generated by the collision into elastic potential energy.

[0030] In some embodiments, an outer anti-collision fender arranged on the main platform frame is arranged between two adjacent platform frames 4. The main platform frame is composed of all platform frames 4. The outer anti-collision fender is used to buffer the collision between the main platform frame and marine floating objects.

[0031] In this embodiment, in the photovoltaic device, an outer anti-collision fender is provided between two adjacent platform frames, and the fender is arranged on the main platform frame. The main platform frame is composed of all platform frames, and the outer anti-collision fender is used to buffer the collision between the main platform frame and the marine floating objects. When the marine floating objects approach the main platform frame under the action of external forces such as water flow and waves, the outer anti-collision fender will first contact the floating objects. It absorbs the collision energy by its own elastic deformation or buffering effect, thereby protecting the main platform frame from collision damage. For example, when the floating object hits the fender, the fender will undergo elastic deformation, converting the kinetic energy generated by the collision into elastic potential energy, thereby reducing the impact of the collision on the main platform frame.

[0032] like Figure 3 As shown, in some embodiments, the platform frame 4 includes a square platform top frame 17, a steel frame cross beam 14, a cross support beam 18 and a steel frame main beam 15; a photovoltaic panel support seat 16 composed of a plurality of transverse support beams and a plurality of longitudinal support beams is arranged in the platform top frame 17, and the transverse support beams and the longitudinal support beams are arranged in a grid shape.

[0033] In this embodiment, the grid-like layout formed by multiple transverse support beams and longitudinal support beams not only provides stable support for the photovoltaic panels, but also effectively disperses the weight of the photovoltaic panels to ensure uniform force on the entire platform. This design helps to improve the stability and reliability of the platform and enables the platform to better adapt to various environmental conditions.

[0034] like Figure 6 and Figure 8 As shown, in some embodiments, a platform base 20 is fixed to the bottom of the platform frame 4 to reduce the movement of the platform frame 4 .

[0035] In some embodiments, the buoy is disposed at the bottom of the platform frame 4 via a buoy connector, which includes two connecting short shafts fixed on the buoy, and both ends of the buoy are respectively sleeved outside the two connecting short shafts and rotatably connected to the connecting short shafts.

[0036] like Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, in some embodiments, the buoy includes a transverse plastic buoy 7 and a vertical plastic buoy 6. The transverse plastic buoy 7 is divided into left and right halves, which are clamped on the steel frame beam 14 and connected by a first buoy connector 8; the vertical plastic buoy 6 is divided into upper and lower halves, which are connected by a second buoy connector 9 to achieve rapid setting of the buoy.

[0037] In this embodiment, this design enables the buoy to be quickly and conveniently assembled with the steel frame beam during the setting process. The two halves of the horizontal plastic buoy can fit tightly on the steel frame beam to ensure the stability of the buoy; and the vertical plastic buoy is connected through the second buoy connector, which further enhances the overall structural strength of the buoy. At the same time, the plastic material of the buoy has the characteristics of light weight and corrosion resistance, which is conducive to improving the service life of the buoy and its ability to adapt to different environments.

[0038] like Figure 8 As shown, in some embodiments, the photovoltaic assembly 5 is fixed on the photovoltaic panel support 16 by a photovoltaic fixing member 19 .

[0039] In summary, the present invention adopts a frame floating platform structure, and the photovoltaic platform modules are connected in a hinged manner, which reduces the motion phase difference between the platform structures, avoids the attachment of marine aquatic organisms, and significantly improves the overall stability and power generation efficiency of the photovoltaic platform structure.

[0040] In some embodiments, the wave phenomenon on the deck of the floating photovoltaic module 1 is determined by:

[0041] Obtaining geometric parameters of the floating photovoltaic module 1;

[0042] Based on the geometric parameters, a three-dimensional model of the floating photovoltaic module 1 is determined;

[0043] Extracting the computational domain of the three-dimensional model and performing mesh division to obtain a three-dimensional model of the floating photovoltaic module 1 after mesh division;

[0044] Based on the three-dimensional model and simulation equations of the floating photovoltaic module 1 after grid division, the wave phenomenon on the deck of the floating photovoltaic module 1 is determined; wherein the simulation equations include force field simulation equations, flow field simulation equations, six-degree-of-freedom motion simulation equations of the floating body, and mooring force simulation equations, and in the process of determining the wave phenomenon on the deck of the floating photovoltaic module 1, the flow field simulation equations are processed with source term wave elimination.

[0045] In this embodiment, first, the geometric parameters of the floating photovoltaic module 1 are obtained, and based on these detailed parameters, a three-dimensional model of the floating photovoltaic module 1 is constructed. After the three-dimensional model is constructed, the computational domain of the model is extracted, and then the mesh is divided to obtain the three-dimensional model of the floating photovoltaic module 1 after meshing. Subsequently, based on the simulation equation, the three-dimensional model after meshing is numerically simulated to determine the wave phenomenon on the deck of the floating photovoltaic module 1. The simulation equations here include force field simulation equations, flow field simulation equations, six-degree-of-freedom motion simulation equations of the floating body, and mooring force simulation equations. The use of multi-dimensional simulation equations makes the simulation of the wave phenomenon on the deck of the floating photovoltaic module 1 more comprehensive and detailed, and can accurately capture various complex physical phenomena. In addition, source term wave elimination processing is performed in the flow field simulation equation. This not only effectively reduces the demand for grid volume in the numerical wave simulation of the photovoltaic platform, avoids the time and resource consumption caused by a large number of grid calculations, but also significantly improves the simulation efficiency, making the entire simulation process more efficient and faster. In summary, the method proposed in the present invention can quickly and accurately simulate the wave phenomenon on the deck of the floating photovoltaic module 1, provide strong data support and technical guarantee for the design optimization, safety assessment and performance improvement of the floating photovoltaic module 1, and promote the steady development of the offshore photovoltaic industry.

[0046] In this embodiment, the computational domain extraction is intended to determine the specific area for subsequent meshing and numerical simulation. The selection of this area is directly related to the accuracy and efficiency of the simulation of the wave phenomenon on the deck of the floating photovoltaic module 1. A suitable computational domain can not only cover the key physical processes and areas related to the wave phenomenon on the deck, but also will not increase the computational burden due to the inclusion of too many irrelevant areas. Based on the three-dimensional model of the floating photovoltaic module 1, the area around the platform itself and within a certain range of the surrounding area is used as the computational domain. For example, considering the range of wave action, the sea space with a certain radius around the platform and the space at a certain height above the platform (that is, the estimated height that the waves may reach) may be used as the computational domain to ensure that the entire process of waves impacting the platform and waves reaching the deck can be captured.

[0047] In one embodiment of the present invention, the flow field simulation equation is constructed by the following formula:

[0048]

[0049] ρ=aρ1+(1-a)ρ2

[0050] μ=αμ1+(1-α)μ2

[0051] Where ρ1 is the density of water, ρ2 is the density of air, μ1 is the viscosity of water, μ2 is the viscosity of air, U is the dynamic viscosity of water, and U is the dynamic viscosity of water. r is the dynamic viscosity of air, and α is the volume fraction of water in the computational domain.

[0052] In this embodiment, the free liquid surface formed by the interaction and coupling of two or more immiscible fluids can be described by means of the flow field simulation equation. Based on this, the flow field to which the floating photovoltaic module 1 is subjected can be simulated extremely accurately, effectively improving the accuracy and reliability of the simulation results, and providing data support and theoretical basis for in-depth research on the performance of the floating photovoltaic module 1 in a complex flow field environment.

[0053] In one embodiment of the present invention, the six-degree-of-freedom motion simulation equation of the floating body is constructed by the following formula:

[0054]

[0055] In the formula, v f is the velocity component of the floating body along the x, y, and z directions, ω f is the angular velocity component of the floating body rotating around the x, y, and z axes, F mooring is the mooring force, F f is the net external force on the floating body, f c is the connection force between multiple floating bodies, M f is the sum of the moments generated by each force, dS is the structural force area, m f is the total mass of the platform, I f is the moment of inertia of the structure, r CS is the fluid force, r CM is the mooring force, r CG is gravity, r CF is the length of the force arm of the multi-body connection force from the center of mass, and t is the time.

[0056] In this embodiment, the six-degree-of-freedom motion simulation equations of the floating body describe the dynamic behavior of multiple interconnected rigid bodies, which are coupled together using different types of constraints and can translate and rotate relative to each other. The connector constraint equations of the rigid bodies can be described as follows.

[0057] Constraint equations for multi-floating connectors:

[0058] φ(q,t)=0

[0059] Ja=Q

[0060] Among them, J is the Jacobian matrix of φ, a is the acceleration of the floating body, and Q is the inhomogeneity.

[0061] In order to enforce the acceleration conditions of the constraints, the constraint forces need to be added to the system. By introducing the Lagrange multiplier λ for all constraints, we get

[0062] f c =J T ×λ

[0063] We need to find a vector λ so that we can use the constraint force f in combination c With any external force F f (such as gravity, wave force, etc.), it can generate constraints that meet the constraints.

[0064] Therefore, the multi-body motion equation can be written as

[0065] Ma=J T λ+F f

[0066] Assume that Aλ=b, and multiply the equation by the Jacobian matrix J on the left to obtain

[0067] A=JM -1 J T

[0068] b=-JM -1 F f +Q

[0069] Substituting A and b into λ, we can find λ. If λ is known, we can solve the equation By integrating twice, we can obtain the generalized coordinate vector.

[0070] In one embodiment of the present invention, the mooring force simulation equation is constructed by the following formula:

[0071]

[0072] Where x is the horizontal distance between the fairlead hole and the anchor point, h is the vertical distance between the fairlead hole and the anchor point, and T H is the horizontal component of the anchor rope tension and T V is the vertical component of the anchor rope tension, φw is the angle formed by the mooring tension, T h is the direction vector, W is the constant weight in water corresponding to the unit length of mooring line, EA is the elastic stiffness of the mooring chain, l s is the length of the mooring line.

[0073] In one embodiment of the present invention, the force field simulation equation is constructed by the following formula:

[0074] F=0.5ρg 2 H 2 T2 / 2π

[0075] Where H is the wave height among wave parameters, T is the period, ρ is the seawater density, g is the gravitational acceleration, and F is the wave force.

[0076] In this embodiment, those skilled in the art can customize the wave parameters such as wave height, period, seawater density and gravitational acceleration according to actual usage.

[0077] In one embodiment of the present invention, the flow field simulation equation is a source term wave elimination process performed by the following equation:

[0078] q φ = -γρ(φ-φ * )

[0079] Where γ is the fluid force coefficient, ρ is the fluid density, φ is the current solution of the flow field simulation equation, and φ* is the value approached by the flow field simulation equation.

[0080] In this embodiment, regarding the numerical wave generation method, considering the efficiency of numerical solution, the source term wave elimination method is adopted. This method is different from the damping wave elimination method and can select a shorter calculation domain to realize numerical wave generation. In this calculation domain, the inlet boundary, outlet boundary and both side boundaries are set as velocity inlet boundaries, and a force wave elimination region is set at the boundary, and the region length is 1.5 times the incident wavelength (the optimal width of the wave elimination region depends on the model geometric parameters). The top of the calculation domain is set as the pressure outlet edge, and the floating array photovoltaic platform and the bottom of the calculation domain are set as no-slip wall boundaries (determined by the structural geometric characteristics).

[0081] In this embodiment, for solving the simulation equation, the finite volume method (FVM) of the unstructured grid is used to perform numerical grid discretization on the partial differential equation. This numerical grid can describe the characteristics of the calculation domain and can also transfer and calculate variables. At the same time, considering the fluid dynamics problem of large-scale movement of the floating photovoltaic platform, the present invention adopts the overlapping grid method to divide the calculation domain into multiple sub-grids, which can be formed and moved independently, and then merged by interpolation and information transmission where needed, so as to simulate the motion information of the floating platform. In order to ensure the accuracy of the numerical solution, it is also necessary to perform grid encryption processing on the calculation domain. Considering the accuracy requirements of numerical wave generation, it is generally necessary to meet 80-100 grids divided into 1 wavelength along the wave propagation direction, and at least 20 grids are required along the wave height direction. In addition, in order to facilitate the overlapping grid to have a good transition in the process of solving the floating body motion, it is generally necessary to divide the transition area around the overlapping grid, and the grid volume of the transition area and the overlapping grid area is as consistent as possible. In order to ensure the stability and convergence of the calculation, it is also necessary to define the convergence conditions of the numerical simulation. The convergence condition of numerical simulation should be set according to the Courant number (CFL), and the Courant number should be controlled below 1. The Courant number can be defined as follows:

[0082]

[0083] Among them, U Max is the maximum velocity of the fluid, Δx Min is the minimum structural grid size, and Δt is the calculation time step.

[0084] In one embodiment of the present invention, based on the three-dimensional model of the floating photovoltaic module 1 after meshing and the simulation equation, the wave phenomenon on the deck of the floating photovoltaic module 1 is determined, including:

[0085] According to the simulation equation, numerical simulation is performed on each node on the three-dimensional model of the floating photovoltaic module 1 after meshing to determine the wave-up phenomenon of each node;

[0086] The wave phenomenon on the deck of the floating photovoltaic module 1 is determined through the wave phenomenon at each node.

[0087] In this embodiment, first, according to the simulation equation, numerical simulation operations are carried out one by one for each node on the three-dimensional model of the floating photovoltaic module 1 after meshing, so as to clarify the wave phenomenon at each node. This step can accurately capture the changes at the microscopic level of the model and obtain detailed data for each node. Then, by summarizing and analyzing the wave phenomenon at each node, from the microscopic to the macroscopic, the wave phenomenon of the entire deck of the floating photovoltaic module 1 is determined. This analysis method from the local to the overall can comprehensively and accurately reflect the wave condition of the deck of the floating photovoltaic module 1 under complex working conditions, and provide detailed and reliable data support for subsequent research and evaluation.

[0088] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0089] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0090] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the equipment or components referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0091] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0092] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

Claims

1. A frame-type offshore floating solar photovoltaic device, characterized in that: include: A plurality of floating photovoltaic modules (1), wherein two adjacent floating photovoltaic modules (1) are connected via two hinges (2) to form an array module, and the outermost floating photovoltaic module (1) is connected to a concrete anchor block (3) via an anchor chain buckle (12) and an anchor chain (11); The floating photovoltaic module (1) comprises a platform frame (4) and a photovoltaic assembly (5), wherein the photovoltaic assembly (5) is arranged on the platform frame (4), the platform frame (4) is provided with a buoy, and the height of the platform frame (4) is greater than a preset height so that the photovoltaic assembly (5) absorbs light directly irradiated thereon and light reflected thereon by the sea surface; The preset height is determined according to the wave phenomenon on the deck of the floating photovoltaic module (1).

2. The device according to claim 1, characterized in that An inner anti-collision fender (13) is arranged between two adjacent floating photovoltaic modules (1); the inner anti-collision fender (13) is arranged on the platform frame (4); and the inner anti-collision fender (13) is used to buffer collisions between the platform frames (4).

3. The device according to claim 2, characterized in that An outer anti-collision fender arranged on the main platform frame is arranged between two adjacent platform frames (4), and the main platform frame is composed of all the platform frames (4). The outer anti-collision fender is used to buffer the collision between the main platform frame and marine floating objects.

4. The device according to claim 3, characterized in that The platform frame (4) comprises a square platform top frame (17), a steel frame cross beam (14), a cross support beam (18) and a steel frame main beam (15); a photovoltaic panel support seat (16) composed of a plurality of transverse support beams and a plurality of longitudinal support beams is arranged in the platform top frame (17), and the transverse support beams and the longitudinal support beams are arranged in a grid shape.

5. The device according to claim 4, characterized in that A platform base (20) is fixed to the bottom of the platform frame (4).

6. The device according to claim 5, characterized in that The buoy is arranged at the bottom of the platform frame (4) through a buoy connector, and the buoy connector includes two connecting short shafts fixed on the buoy, and the two ends of the buoy are respectively sleeved outside the two connecting short shafts and are rotatably connected to the connecting short shafts.

7. The device according to claim 6, characterized in that The buoy comprises a transverse plastic buoy (7) and a vertical plastic buoy (6); the transverse plastic buoy (7) is divided into left and right halves, clamped on the steel frame crossbeam (14), and connected via a first buoy connector (8); the vertical plastic buoy (6) is divided into upper and lower halves, and connected via a second buoy connector (9) to achieve rapid setting of the buoy.

8. The device according to claim 7, characterized in that The photovoltaic assembly (5) is fixed on the photovoltaic panel support seat (16) via the photovoltaic fixing member (19).

9. The device according to any one of claims 1 to 8, characterized in that The wave phenomenon on the deck of the floating photovoltaic module (1) is determined in the following manner: Obtaining geometric parameters of a floating photovoltaic module (1); Based on the geometric parameters, determining a three-dimensional model of the floating photovoltaic module (1); Extracting the computational domain and performing meshing on the three-dimensional model to obtain a three-dimensional model of the floating photovoltaic module (1) after meshing; Based on the three-dimensional model of the floating photovoltaic module (1) after the grid division and the simulation equation, determining the wave phenomenon on the deck of the floating photovoltaic module (1); The simulation equations include a force field simulation equation, a flow field simulation equation, a six-degree-of-freedom motion simulation equation of a floating body, and a mooring force simulation equation, and in the process of determining the wave phenomenon on the deck of a floating photovoltaic module (1), the flow field simulation equation is processed by source term wave elimination.

10. The device according to claim 9, characterized in that The flow field simulation equation is constructed by the following formula: ρ=aρ1+(1-a)ρ2 μ=αμ1+(1-α)μ2 Where ρ1 is the density of water, ρ2 is the density of air, μ1 is the viscosity of water, μ2 is the viscosity of air, U is the dynamic viscosity of water, and U is the dynamic viscosity of water. r is the dynamic viscosity of air, and α is the volume fraction of water in the computational domain.

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