Cable-foam combined offshore floating type photovoltaic structure system

Abstract

The invention relates to the technical field of offshore photovoltaic, in particular to a cable-foam combined offshore floating photovoltaic structure system which comprises a floating island device, the floating island device comprises floating assemblies connected with one another, photovoltaic assemblies are arranged at the tops of the floating assemblies, mooring cables are arranged at the four corners of the bottom of the floating island device, and the mooring cables are connected with the floating assemblies. One end, far away from the floating island device, of the mooring rope is connected with a tower footing, and a wind power tower is arranged above the tower footing; the floating assembly comprises a cable net structure, the cable net structure is arranged in a rectangular grid mode, a steel frame structure is arranged on the cable net structure, a floating body is arranged in the steel frame structure, a photovoltaic assembly is arranged above the floating body, and the photovoltaic assembly is connected with the steel frame structure. According to the invention, the cable net structure and the floating body are combined, so that the defects of the existing offshore floating photovoltaic system in the aspects of structural stability and corrosion resistance are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of offshore photovoltaics, and in particular to a cable-foam combined offshore floating photovoltaic structure system. Background Art

[0002] Offshore floating photovoltaic system (OFPV) is a technology that installs solar photovoltaic panels on floating structures. Unlike traditional land photovoltaic systems, OFPV systems use the surface of water bodies such as oceans, reservoirs or lakes to support photovoltaic panels with the help of floating structures, thereby converting solar energy into electrical energy. Offshore floating photovoltaic structure systems can be installed in shallow water areas near the coastline, near islands, and even in deep sea areas, which can effectively utilize marine resources and reduce the occupation of land space.

[0003] The Chinese patent with application number CN202210209849.4 discloses a floating offshore photovoltaic platform structure with liftable photovoltaic panels, including: a floating photovoltaic platform, which is a hollow structure, and the bottom of the floating photovoltaic platform is connected to a gravity block through a connector; a lifting shaft, which has an external thread, and the lower end of the lifting shaft is fixed on the floating photovoltaic platform; a plurality of photovoltaic panel assemblies, which are liftable and arranged on the lifting shaft through a supporting structure, and the photovoltaic panel assembly arranged above is embedded in the adjacent photovoltaic panel assembly arranged below it when it is shrunk. The floating offshore photovoltaic platform structure provided by the present invention utilizes the longitudinal space, which is conducive to increasing the photovoltaic panel area per unit sea area and reducing the unit construction cost.

[0004] Although the above document reduces the unit cost by increasing the area of ​​photovoltaic panels per unit sea area, the solution still faces a series of severe challenges in terms of technology and practical application. Its main defects can be summarized as follows: First, the wind and wave resistance is insufficient. The traditional floating body-frame structure is particularly fragile in the complex marine environment. The invasion of strong winds and waves often leads to a significant decrease in the overall stability of the structure. In extreme cases, it even drifts or is damaged, which seriously restricts its stability and reliability.

[0005] Secondly, the corrosion resistance is limited. Due to long-term direct exposure to the marine environment full of salt spray, traditional materials are difficult to withstand such harsh corrosion conditions, resulting in rapid aging of structural components and a significant reduction in service life, which in turn increases the cost and difficulty of subsequent maintenance.

[0006] Furthermore, the construction is complex and costly. Traditional offshore floating photovoltaic systems not only have a long construction period, but also require a cumbersome and complicated on-site installation process, requiring a large amount of human resources and expensive equipment support, which undoubtedly increases the overall cost of the project and has an adverse impact on economic benefits.

[0007] In view of the above problems, it is particularly urgent and necessary to invent a new type of cable-foam combined offshore floating photovoltaic structure system. Summary of the invention

[0008] The object of the present invention is to provide a cable-foam combined offshore floating photovoltaic structure system to solve the technical problems raised in the above-mentioned background technology.

[0009] To achieve the above object, the present invention provides the following technical solutions: A cable-foam combined offshore floating photovoltaic structure system, comprising a floating island device, wherein the floating island device comprises interconnected floating components, a photovoltaic component is arranged on the top of the floating component, and mooring cables are arranged at four corners of the bottom of the floating island device, and a tower base is connected to one end of the mooring cable away from the floating island device, and a wind power tower is arranged above the tower base; The floating component includes a cable net structure, which is arranged in a rectangular grid. A steel frame structure is arranged on the cable net structure. A floating body is arranged inside the steel frame structure. A photovoltaic component is arranged above the floating body, and the photovoltaic component is connected to the steel frame structure.

[0010] Preferably, the cable net structure includes cables, and a plurality of the cables together form a rectangular grid structure. Two opposite ends of the cables are provided with connecting pieces, and the connecting pieces are used to fix the ends of the two cables.

[0011] Preferably, the connecting member comprises a first cable buckle, the first cable buckle is provided with a second cable buckle, and the first cable buckle and the second cable buckle are respectively fixedly connected to the ends of the corresponding cables.

[0012] Preferably, the steel frame structure comprises a steel truss, the steel truss is located inside the cable net structure, the steel truss arranged inside the cable net structure is rectangular, and the outer side of the steel truss is connected to the cable through a fixing member; The bottom of the steel truss is provided with fixing parts distributed in an array, the fixing parts are fixedly connected to the steel truss, and the fixing parts are used to support the floating body.

[0013] Preferably, the fixing member includes a first connecting buckle, the first connecting buckle is fixedly connected to the cable, a second connecting buckle is provided on the top of the first connecting buckle, a connecting part is provided on the second connecting buckle, and both ends of the connecting part are respectively connected to the corresponding steel trusses.

[0014] Preferably, the photovoltaic assembly includes photovoltaic panels, the photovoltaic panel array is distributed on the top of the floating body, and the bottom of the photovoltaic panels is provided with a base, and the base is penetrated by a connecting rod, and the connecting rod connects the photovoltaic panels on the same floating body into one through the base, and the connecting rod is connected to the steel truss at one end away from the base.

[0015] Technical effects and advantages of the present invention: 1. The present invention provides excellent strength and stiffness characteristics by setting up a cable net structure, combining the application of high-strength materials with the advanced construction technology of super tensioning, so that the structure can effectively resist the complex wind and wave loads in the marine environment and show excellent wind and earthquake resistance. In addition, by incorporating flexible structural design into the cable net structure and its partition block components, the adaptive adjustment of the structure to the natural ups and downs of the waves is achieved, effectively dispersing and reducing the load borne by the structure, thereby improving the durability of the overall structure and significantly reducing the risk of structural damage caused by environmental fluctuations.

[0016] 2. The cable net structure of the present invention is lightweight, which greatly reduces the use of steel and reduces manufacturing costs compared to traditional rigid structures. At the same time, the structure is highly modular and flexible, and can be flexibly assembled and spliced ​​according to specific engineering requirements, which not only enhances the design freedom, but also shows stronger economic and practical advantages compared to traditional floating photovoltaic structure systems.

[0017] 3. The present invention provides connectors and fixings to increase the number of prefabricated components of the cable net structure and make them standardized, which greatly facilitates on-site installation operations and realizes a rapid and efficient construction process. It not only shortens the construction period, but also significantly improves the construction efficiency, ensuring that the project can be quickly deployed and put into use, bringing greater value returns to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the top view of the main structure of the present invention; Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 4 It is a structural schematic diagram of the floating assembly of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure at B in the middle; Figure 6 It is a schematic diagram of the bottom structure of the floating assembly of the present invention; Figure 7It is a schematic diagram of the explosion structure of the floating assembly of the present invention; Figure 8 It is a schematic diagram of the structure of the photovoltaic module of the present invention.

[0019] In the figure: 1. wind power tower; 2. tower base; 3. floating island device; 4. floating component; 41. cable net structure; 411. cable; 412. connector; 4121. first cable buckle; 4122. second cable buckle; 42. steel frame structure; 421. steel truss; 422. fixing component; 4221. first connecting buckle; 4222. second connecting buckle; 4223. connecting part; 423. fixing part; 43. floating body; 5. photovoltaic component; 51. photovoltaic panel; 52. base; 53. connecting rod; 6. mooring rope. DETAILED DESCRIPTION

[0020] 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 only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of 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.

[0021] Reference Figures 1 to 7 As shown, the present invention provides a cable-foam combined offshore floating photovoltaic structure system, including a floating island device 3, the floating island device 3 includes interconnected floating components 4, a photovoltaic component 5 is provided on the top of the floating component 4, and mooring cables 6 are provided at the four corners of the bottom of the floating island device 3. The end of the mooring cable 6 away from the floating island device 3 is connected to a tower base 2, and a wind power tower 1 is provided above the tower base 2.

[0022] The mooring lines 6 are ropes or cables used to fix the floating island device 3 to the seabed or other offshore structures.

[0023] The floating component 4 includes a cable net structure 41, which is arranged in a rectangular grid. A steel frame structure 42 is arranged on the cable net structure 41, a floating body 43 is arranged inside the steel frame structure 42, and a photovoltaic component 5 is arranged above the floating body 43, and the photovoltaic component 5 is connected to the steel frame structure 42.

[0024] The core of the system is the floating island device 3, which is composed of a plurality of interconnected floating components 4 to form a stable offshore platform.

[0025] A photovoltaic module 5 is installed on the top of the floating module 4 to capture solar energy and convert it into electrical energy.

[0026] To enhance stability, mooring ropes 6 are provided between the floating assembly 4 and the tower base 2 to prevent the floating island device 3 from being washed away by waves. A wind power tower 1 is installed above the tower base 2 to realize the comprehensive utilization of wind energy and solar energy.

[0027] Reference Figures 3 to 7 As shown, the cable net structure 41 includes cables 411 , and a plurality of cables 411 together form a rectangular grid structure. Connectors 412 are provided at two opposite ends of the cables 411 , and the connectors 412 are used to fix the ends of the two cables 411 .

[0028] The cable 411 includes a closed cable, which is composed of a closed cable body for building structures and an anchor. The cable body is made of at least two layers of steel wires twisted around a central round steel wire, a combined strand or a parallel strand, and the outer layer of steel wire can be right-twisted or left-twisted. The unique cross-sectional form of the cable 411 greatly improves the corrosion resistance of the structure.

[0029] The mesh structure composed of a plurality of high-strength cables 411 is used to disperse and bear the load.

[0030] Reference Figures 3 to 7 As shown, the connecting member 412 includes a first cable buckle 4121 , and the first cable buckle 4121 is provided with a second cable buckle 4122 . The first cable buckle 4121 and the second cable buckle 4122 are respectively fixedly connected to the ends of the corresponding cables 411 .

[0031] The first cable buckle 4121 and the second cable buckle 4122 are both clamping buckles, and the tops of the clamping buckles are connected by a bolt assembly, and the bolt assembly is used to fix the clamping buckle and the cable 411 together. The connection between the cables 411 through the cable buckles belongs to the existing technology, so it will not be elaborated on.

[0032] Reference Figures 4 to 7 As shown, the steel frame structure 42 includes a steel truss 421 , which is located inside the cable net structure 41 . The steel truss 421 arranged inside the cable net structure 41 is rectangular, and the outer side of the steel truss 421 is connected to the cable 411 through a fixing member 422 .

[0033] The steel truss 421 includes a truss structure made of steel material and is used to increase the strength and rigidity of the structure.

[0034] The bottom of the steel truss 421 is provided with fixed parts 423 distributed in an array, and the fixed parts 423 are fixedly connected to the steel truss 421 , and the fixed parts 423 are used to support the floating body 43 .

[0035] The fixing part 423 includes a steel wire rope or a mounting rod, and the fixing part 423 and the steel truss 421 together form a frame for supporting the floating body 43 .

[0036] The float 43 includes a material or device that can provide buoyancy, and is commonly used in floating parts of offshore structures. Depending on the specific application environment, the float 43 can be made of different materials, such as rubber or fiberglass.

[0037] Reference Figures 3 to 7 As shown, the fixing member 422 includes a first connecting buckle 4221, which is fixedly connected to the cable 411, a second connecting buckle 4222 is provided on the top of the first connecting buckle 4221, and a connecting portion 4223 is provided on the second connecting buckle 4222, and both ends of the connecting portion 4223 are respectively connected to their corresponding steel trusses 421.

[0038] The first connecting buckle 4221 and the second connecting buckle 4222 are both clamping buckles, and the tops of the clamping buckles are connected by a bolt assembly.

[0039] The connection part 4223 includes a connection rod 53, which adopts a flexible structure and includes a rubber rod. The two ends of the connection rod 53 are respectively connected to two steel trusses 421. The plurality of floating components 4 are connected by setting a fixing member 422 to form a floating island device 3. By setting the connection part 4223 (flexible structure) between the cable net structure 41 and the overall partition blocks, the floating island device 3 can fluctuate with the waves, thereby reducing the load borne by the structure, improving durability, and reducing the probability of structural damage.

[0040] Reference Figures 4 to 8 As shown, the photovoltaic assembly 5 includes a photovoltaic panel 51, and the photovoltaic panel 51 array is distributed on the top of the float 43. The bottom of the photovoltaic panel 51 is provided with a base 52, and a connecting rod 53 is passed through the base 52. The connecting rod 53 connects the photovoltaic panels 51 on the same float 43 into one body through the base 52, and the end of the connecting rod 53 away from the base 52 is connected to the steel truss 421.

[0041] First, the installation process of the cable net structure 41 is performed. This process covers the installation and splicing of the pre-prepared cables 411 and their matching connectors 412, aiming to build a complete and stable cable net structure 41. Subsequently, in order to further enhance its stability, the mooring ropes 6 need to be firmly fixed to the four corners of the cable net structure 41, and the pre-tightening force of the cables 411 is finely adjusted to ensure that the cable net structure 41 reaches the optimal tension state.

[0042] It should be noted that the cable net structure 41, as the bottom force-bearing body of the entire structural system, is carefully constructed into a rectangular shape using high-vanadium closed cables and is laid at the bottom of the system. After the cable net structure 41 is unfolded, its four corners are closely connected to the foundation of the offshore wind power tower 1 through mooring cables 6, providing a solid support foundation for the entire system. This structure is not only good at dispersing and bearing loads from wind and waves, but also significantly enhances the rigidity and stability of the system through the advanced construction process of super-tensioning.

[0043] Next, the installation phase of the steel frame structure 42 begins. The core operation of this phase is to place the steel frame structure 42 directly above the cable net structure 41 and to secure the two tightly by bolting them together. This not only stabilizes the overall structure, but also lays a solid foundation for the subsequent installation of the floating body 43 and photovoltaic panels 51.

[0044] Then, the floating body 43 is installed. During the installation process, the floating body 43 needs to be placed in the inner space of the steel frame structure 42, and a series of adjustment and fixing measures are taken to ensure that the floating body 43 is in a stable and accurate position, thereby providing the necessary buoyancy and stability support for the entire system.

[0045] It should be noted that: above the small rectangular area divided by the cable net structure 41, a steel frame structure 42 carefully enclosed by steel trusses 421 is connected. This design is not only beautiful, but also allows the placement of a large floating body 43 inside, thereby greatly improving the buoyancy and stability of the entire structure. The design of the steel truss 421 fully considers the dynamic impact of wind and waves, and ensures the overall rigidity and durability of the steel frame structure 42 through node reinforcement and bolt connection.

[0046] Finally, the photovoltaic panel 51 is installed. In this step, the base 52 of the photovoltaic panel 51 is firmly installed on the steel frame structure 42 using the steel truss 421 on the steel frame structure 42 as support. With the successful installation of the photovoltaic panel 51, the entire system has the ability to efficiently convert abundant solar energy resources into clean electricity, marking the successful completion of the installation work.

[0047] It should be noted that the base 52 is connected to the upper part of the steel frame structure 42 through the connecting rod 53, forming an offshore floating photovoltaic structure system integrating the cable net structure 41, the floating body 43 and the photovoltaic panel 51. It is worth mentioning that the base 52 adopts an advanced modular design concept, which is not only easy to install quickly, but also brings great convenience to subsequent maintenance work.

[0048] A control terminal is provided inside the tower base 2, and a control system is provided inside the control terminal, and the control system includes a force analysis unit and a monitoring unit. The force analysis unit and the monitoring unit monitor the overall force condition of the floating island device 3 to ensure the normal operation of the floating island shaft.

[0049] It should be noted that the force analysis unit uses finite element analysis software to perform force analysis on the cable net structure 41 and the steel truss 421 to optimize the structural design.

[0050] It should be noted that the monitoring unit includes force sensors installed on the cable net structure 41 and the steel frame structure 42. The values ​​detected by the force sensors can monitor the stress condition of the structure and the position of the floating body 43 to ensure the stable operation of the system.

[0051] In order to facilitate the use of this structural system, the following three different implementation modes are proposed, which include a basic implementation mode, an enhanced implementation mode and an economical implementation mode. The three different implementation modes are now explained.

[0052] (1) The basic implementation method of the offshore floating photovoltaic structure system includes the following steps: Step 1: Prefabricate the cable net structure 41 and the steel frame structure 42. Use high-strength galvanized high-vanadium sealed steel cables with a diameter of 650mm to make a rectangular grid, and each small rectangle has a side length of 7.2 meters. The steel truss 421 uses Q345 steel and is coated with an anti-corrosion coating.

[0053] Step 2: At the construction site, unfold the cable net structure 41, and fix the four corners to the foundation of the offshore wind power tower 1 through high-strength polyethylene cables (diameter 150 mm). Adjust the pre-tightening force of the cable 411 to ensure that the cable net structure 41 is tensioned.

[0054] Step 3: Install the steel truss 421 above the cable net structure 41, and fix the steel truss 421 by bolt connection. High-density polyethylene (HDPE) buoys 43 are placed inside the steel frame structure 42, and each buoy 43 is 3.0 meters long, 3.0 meters wide, and 1.0 meters high.

[0055] Step 4: Fix the base 52 of the photovoltaic panel 51 on the steel frame structure 42 through the steel truss 421 to complete the installation of the photovoltaic panel 51. The photovoltaic panel 51 uses a polycrystalline silicon photovoltaic module 5, and the power of each module is 300W.

[0056] It should be noted that the cable 411 mentioned in this step is made of high-strength galvanized high-vanadium sealed steel cable with a diameter of 650mm. The steel truss 421 is made of Q345 steel, and its surface is treated with an anti-corrosion coating. The floating body 43 is made of high-density polyethylene (HDPE). The parameters of the photovoltaic panel 51 are polycrystalline silicon photovoltaic modules 5, each with a power of 300W.

[0057] The basic implementation method can improve the wind and wave resistance of the structure in strong wind and wave environment, and has high stability. At the same time, the economical structure has low structural cost, convenient construction and significant economic benefits.

[0058] (2) The enhanced implementation method of the offshore floating photovoltaic structure system includes the following steps: Step 1: Use ultra-high strength galvanized high vanadium sealed steel cables with a diameter of 800mm to make a rectangular grid, with each small rectangle having a side length of 5.4 meters. Steel truss 421 uses Q390 steel, and its surface is coated with a professional anti-corrosion coating.

[0059] Step 2: At the construction site, the cable net structure 41 is unfolded, and the four corners are fixed to the foundation of the offshore wind power tower 1 through ultra-high strength polyethylene cables (diameter 200 mm). The pre-tightening force of the cable 411 is adjusted to ensure that the cable net structure 41 is tensioned.

[0060] Step 3: Install the reinforced steel truss 421 above the cable net structure 41, and fix the steel truss 421 by bolt connection. A polyurethane foam (PUFoam) float 43 is placed inside the steel frame structure 42, and each float 43 is 5.0 meters long, 5.0 meters wide, and 1.2 meters high.

[0061] Step 4: Fix the base 52 of the photovoltaic panel 51 on the steel frame structure 42 through the steel truss 421 to complete the installation of the photovoltaic panel 51. The photovoltaic panel 51 uses a monocrystalline silicon photovoltaic module 5, and the power of each module is 350W.

[0062] It should be noted that the cable 411 mentioned in this step is made of ultra-high strength galvanized high-vanadium sealed steel cable with a diameter of 800mm. The steel truss 421 is made of Q390 steel with professional anti-corrosion coating. The floating body 43 is made of polyurethane foam (PUFoam). The parameters of the photovoltaic panel 51 are monocrystalline silicon photovoltaic modules 5, each with a power of 350W.

[0063] The implementation method of the enhanced structure can improve the wind and wave resistance of the structure in a high wind and wave environment, and has high stability. At the same time, the economical structure has a moderate structural cost, convenient construction, and significant economic benefits.

[0064] (3) An economical implementation method of an offshore floating photovoltaic structure system includes the following steps: Step 1: Select standard strength galvanized high vanadium sealed steel cables with a diameter of 500mm and make them into rectangular grids, with each small rectangle having a side length of 7.2 meters. Steel truss 421 is made of Q235 steel, and its surface is coated with a basic anti-corrosion coating.

[0065] Step 2: At the construction site, the cable net structure 41 is unfolded, and the four corners are fixed to the foundation of the offshore wind power tower 1 through standard strength polyethylene cables (diameter 100 mm). The pre-tightening force of the cable 411 is adjusted to ensure that the cable net structure 41 is tensioned.

[0066] Step 3: Install an economical steel truss 421 above the cable net structure 41, and the steel truss 421 is fixed by bolt connection. A basic high-density polyethylene (HDPE) buoy 43 is placed inside the steel frame structure 42, and each buoy 43 is 2.5 meters long, 2.5 meters wide, and 1.0 meter high.

[0067] Step 4: Fix the base 52 of the photovoltaic panel 51 on the steel frame structure 42 through the steel truss 421 to complete the installation of the photovoltaic panel 51. The photovoltaic panel 51 uses a polycrystalline silicon photovoltaic module 5, and the power of each module is 250W.

[0068] It should be noted that the cable 411 mentioned in this step is made of standard strength galvanized high vanadium sealed steel cable with a diameter of 500mm. The steel truss 421 is made of Q235 steel, and its surface is treated with basic anti-corrosion coating. The floating body 43 is made of high-density polyethylene (HDPE). The parameters of the photovoltaic panel 51 are polycrystalline silicon photovoltaic modules 5, each with a power of 250W.

[0069] The economical structure can improve the wind and wave resistance of the structure in a medium wind and wave environment, and has high stability. At the same time, the economical structure has a very low structural cost, is easy to construct, and has high economic benefits.

[0070] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0071] Although embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable-foam combined offshore floating photovoltaic structure system, characterized in that: The floating island device (3) comprises floating components (4) connected to each other, a photovoltaic component (5) is provided on the top of the floating component (4), mooring ropes (6) are provided at four corners of the bottom of the floating island device (3), one end of the mooring rope (6) away from the floating island device (3) is connected to a tower base (2), and a wind power tower (1) is provided above the tower base (2); The floating assembly (4) comprises a cable net structure (41), the cable net structure (41) being arranged in a rectangular grid, a steel frame structure (42) being arranged on the cable net structure (41), a floating body (43) being arranged inside the steel frame structure (42), a photovoltaic assembly (5) being arranged above the floating body (43), and the photovoltaic assembly (5) being connected to the steel frame structure (42).

2. The cable-foam combined offshore floating photovoltaic structure system according to claim 1 is characterized in that: The cable net structure (41) comprises cables (411), wherein a plurality of cables (411) together form a rectangular grid structure, and two opposite ends of the cables (411) are provided with connecting pieces (412), wherein the connecting pieces (412) are used to fix the ends of the two cables (411).

3. The cable-foam combined offshore floating photovoltaic structure system according to claim 2 is characterized in that: The connecting member (412) comprises a first cable buckle (4121), the first cable buckle (4121) is provided with a second cable buckle (4122), and the first cable buckle (4121) and the second cable buckle (4122) are respectively fixedly connected to the ends of the corresponding cables (411).

4. The cable-foam combined offshore floating photovoltaic structure system according to claim 2 is characterized in that: The steel frame structure (42) comprises a steel truss (421), the steel truss (421) is located inside the cable net structure (41), the steel truss (421) arranged inside the cable net structure (41) is rectangular, and the outer side of the steel truss (421) is connected to the cable (411) via a fixing member (422); The bottom of the steel truss (421) is provided with fixed parts (423) distributed in an array, the fixed parts (423) are fixedly connected to the steel truss (421), and the fixed parts (423) are used to support the floating body (43).

5. The cable-foam combined offshore floating photovoltaic structure system according to claim 4 is characterized in that: The fixing member (422) comprises a first connecting buckle (4221), the first connecting buckle (4221) is fixedly connected to the cable (411), a second connecting buckle (4222) is provided on the top of the first connecting buckle (4221), a connecting portion (4223) is provided on the second connecting buckle (4222), and two ends of the connecting portion (4223) are respectively connected to the corresponding steel trusses (421).

6. The cable-foam combined offshore floating photovoltaic structure system according to claim 4 is characterized in that: The photovoltaic assembly (5) comprises a photovoltaic panel (51), wherein the photovoltaic panel (51) is arrayed on the top of the floating body (43), and a base (52) is provided at the bottom of each photovoltaic panel (51). A connecting rod (53) is passed through the base (52), and the connecting rod (53) connects the photovoltaic panels (51) on the same floating body (43) into one body through the base (52), and the end of the connecting rod (53) away from the base (52) is connected to the steel truss (421).

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