Wave dissipation structure and offshore photovoltaic power generation system

Abstract

The utility model relates to a wave dissipation structure and an offshore photovoltaic power generation system, and relates to the technical field of photovoltaic power generation. The wave dissipation structure comprises a floating assembly, a wave dissipation assembly and a fixing assembly. The floating assembly comprises at least two floating pipes capable of floating on the water surface. The wave dissipation assembly comprises a wave dissipation net, and the end of the wave dissipation net is connected to the floating pipes, so that an arc-shaped net drooping in the vertical direction is formed between every two adjacent floating pipes. The fixing assembly comprises a first fixing part and a second fixing part, and the first fixing part is used for fixing the floating assembly; the second fixing part at least comprises a balancing weight, and the balancing weight is arranged at the bottom of the wave dissipation net or at the position close to the bottom and used for tensioning the wave dissipation net. The wave dissipation structure is more flexible and convenient to assemble, short in construction period, low in construction difficulty, good in adaptability and small in interference to the marine environment, seawater can normally penetrate through the wave dissipation net, and natural flowing and ecological balance of water can be maintained easily.

Description

Technical Field

[0001] This application relates to the field of photovoltaic power generation technology, and more specifically, to a wave-damping structure and a marine photovoltaic power generation system. Background Technology

[0002] Offshore photovoltaic (PV) power generation technology is widely used in coastal areas as a key technology for alleviating the conflict between energy demand and environmental protection. However, offshore PV arrays are susceptible to wave damage during operation, leading to reduced stability of floating PV modules, decreased power generation efficiency, and potential damage to the system structure.

[0003] In related technologies, wave-damping structures typically employ complex designs, such as heavy concrete equipment. These structures not only require significant construction and transportation costs, but also, due to their large size and weight, necessitate equally large anchoring systems during installation, resulting in poor installation flexibility. Utility Model Content

[0004] In order to at least solve some of the problems mentioned in the related technologies, this application provides a wave-damping structure and a marine photovoltaic power generation system.

[0005] To achieve the above objectives, a wave-damping structure is provided for offshore photovoltaic power generation equipment. The wave-damping structure includes a floating component, a wave-damping component, and a fixing component. The floating component includes at least two floating tubes capable of floating on the water surface. The wave-damping component includes a wave-damping net, the ends of which are connected to the floating tubes to form an arc-shaped net hanging vertically between adjacent floating tubes. The fixing component includes a first fixing part and a second fixing part. The first fixing part is used to fix the floating component; the second fixing part includes at least a counterweight block, which is disposed at or near the bottom of the wave-damping net to tension the wave-damping net.

[0006] Furthermore, multiple counterweights are evenly distributed on the wave-damping net along the axial direction of the floating pipe.

[0007] Furthermore, the second fixing part includes a floating block, which is disposed on the wave-damping net near the end of the floating tube. Alternatively, the floating block is disposed on the wave-damping net between the counterweight block and the floating tube.

[0008] Furthermore, the number of floating blocks corresponds to the number of counterweights. Also, the floating blocks are symmetrically arranged along the counterweights on the wave-damping net.

[0009] Furthermore, the first fixing part includes a mooring cable, one end of which is connected to the floating pipe, and the other end of which is connected to an underwater anchor block.

[0010] Furthermore, at least three mooring lines are evenly distributed on the floating pipe. Additionally, mooring lines are also provided at the ends of the floating pipe.

[0011] Furthermore, the distance between two adjacent floating tubes is L1, and the wavelength of the ocean wave is λ, satisfying: L1≥1 / 4λ.

[0012] Furthermore, the vertical distance between the counterweight and the floating tube is L2, which satisfies: L2≥2λ.

[0013] Furthermore, the floating tube includes a hollow shaft filled with a filler for buoyancy, and a spiral plate is wound around the outside of the hollow shaft.

[0014] This application also provides a marine photovoltaic power generation system, including a photovoltaic power generation device and a wave-damping structure as described in any of the above embodiments. The wave-damping structure is evenly distributed around the circumference of the photovoltaic power generation device to dissipate sea waves.

[0015] With the above technical solution, when using the wave-damping structure of this application, the floating component floats around the photovoltaic power generation equipment, while the wave-damping component is suspended on the floating component to dissipate sea waves. The first fixing part of the fixing component can fix the floating component in a suitable position to prevent the floating component from shifting significantly; in the second fixing part of the fixing component, the counterweight is set at the bottom or near the bottom of the wave-damping net, and the end of the wave-damping net is connected to the floating tube of the floating component. In this way, the counterweight and the floating tube cooperate to keep the wave-damping net in a taut state. When sea waves arrive, the wave-damping net can effectively break up the sea waves, deform the sea waves, and dissipate the energy in the sea waves, thereby protecting the photovoltaic power generation equipment.

[0016] The wave-dissipating structure of this application is more flexible and convenient to assemble during use, with a shorter construction period and lower construction difficulty. Furthermore, the wave-dissipating net of this application can be configured with different lengths or shapes to suit different water depths and wave conditions, exhibiting good adaptability. Moreover, the wave-dissipating net of this application causes minimal disturbance to the marine environment, allowing seawater to pass through it normally, thus helping to maintain the natural flow and ecological balance of the water body.

[0017] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure from one perspective provided for an embodiment of this application;

[0020] Figure 2 Provided for the embodiments of this application Figure 1 A magnified view of a portion of point A in the middle.

[0021] icon:

[0022] 100-Floating component; 110-Floating pipe; 120-Helical array plate; 200-Wave damping component; 210-Wave damping net; 300-Fixing component; 310-First fixing part; 311-Mooring cable; 312-Anchor block; 320-Second fixing part; 321-Counterweight block; 322-Floating block. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] This embodiment provides a wave-damping structure to solve the problems of large structure and poor flexibility of use in related technologies.

[0027] Please see Figure 1 , Figure 2 A wave-damping structure for offshore photovoltaic power generation equipment. The wave-damping structure includes a floating component 100, a wave-damping component 200, and a fixing component 300. The floating component 100 includes at least two floating tubes 110 capable of floating on the water surface. The wave-damping component 200 includes a wave-damping net 210, the ends of which are connected to the floating tubes 110 to form an arc-shaped net hanging vertically between two adjacent floating tubes 110. The fixing component 300 includes a first fixing part 310 and a second fixing part 320. The first fixing part 310 is used to fix the floating component 100; the second fixing part 320 includes at least a counterweight 321, which is disposed at or near the bottom of the wave-damping net 210 to tension the wave-damping net 210.

[0028] Specifically, in this embodiment, at least two floating tubes 110 in the floating assembly 100 are arranged in a group and positioned around the circumference of the photovoltaic power generation equipment as needed. The floating tubes 110 are then fixed by the first fixing part 310 in the fixing assembly 300, ensuring that the floating tubes 110 can only float within the target area and preventing large-scale movement. The wave-damping net 210 in the wave-damping assembly 200 is positioned between two adjacent floating tubes 110. The two ends of the wave-damping net 210 are connected to the two adjacent floating tubes 110, allowing the wave-damping net 210 to hang naturally between the two floating tubes 110, forming an arc-shaped net. The counterweight 321 in the second fixing part 320 is set at the bottom or near the bottom of the wave-dissipating net 210. Since the counterweight 321 will drag the wave-dissipating net 210 downward in the vertical direction, and the float pipe 110 will keep both ends of the wave-dissipating net 210 near the water surface, the cooperation between the counterweight 321 and the float pipe 110 will keep the wave-dissipating net 210 in a taut state.

[0029] The counterweight 321, in conjunction with the float 110, keeps the wave-dissipating net 210 taut, reducing swaying or deformation caused by waves and currents. It also prevents the net from undulating with the waves, improving its anti-interference capability in the water and ensuring its structural stability. Furthermore, by controlling the weight of the counterweight 321 and the length of the net 210, the net can always be positioned within the effective energy dissipation zone.

[0030] Thus, when waves move near the wave-dissipating net 210, the mesh structure of the net 210 is permeable. As water flows through the net 210, friction and turbulence are generated, converting wave energy into heat energy, thereby reducing wave amplitude and energy, and gradually dissipating the wave's energy. Secondly, in this embodiment, the wave-dissipating net 210 maintains an arc shape. When waves pass through the mesh structure of the net 210, refraction and diffraction occur, changing the wave's propagation direction and shape, consuming some of the wave's energy, and redistributing the wave's energy. Furthermore, under specific conditions, such as when the wave waveform matches the mesh structure of the net 210, the presence of the mesh structure may cause the wave to break up. This breaking up process directly consumes the wave's energy, reducing the wave's impact on the surrounding environment, thereby protecting the photovoltaic power generation equipment.

[0031] In one embodiment, exemplarily, such as Figure 1 , Figure 2 As shown, multiple counterweights 321 are evenly distributed along the axis of the float pipe 110 on the wave-damping net 210. The evenly distributed counterweights 321 apply a uniform downward force to the entire wave-damping net 210, maintaining good tension throughout its length. Compared to placing counterweights 321 only in the middle or at a single point, this method effectively prevents the wave-damping net 210 from becoming loose, floating, or forming "wave-like" wrinkles, thereby improving its structural stability under water flow impact.

[0032] Multiple counterweights help adjust the natural vibration frequency of the wave-damping net 210, allowing it to avoid the main excitation frequency of ocean waves, thereby reducing the risk of resonance. It also suppresses adverse dynamic responses such as swaying and slapping caused by wind and waves.

[0033] Furthermore, by setting multiple counterweights 321, that is, by making the counterweights 321 smaller in size, or by modularizing the counterweights 321, the counterweights 321 can be made easier to install and replace. Whether pre-assembled on shore or in a marine operating environment, this can effectively reduce the difficulty of operation. If a counterweight 321 is damaged or falls off, only local repair is required, without affecting the operation of the entire wave-dissipating net 210.

[0034] In one embodiment, exemplarily, such as Figure 1 , Figure 2 As shown, the second fixing part 320 includes a floating block 322, which is disposed on the wave-damping net 210 near the end of the float tube 110. Alternatively, the floating block 322 is disposed on the wave-damping net 210 between the counterweight block 321 and the float tube 110. The floating block 322 provides upward buoyancy to the wave-damping net 210, forming an "up-down tension" state with the counterweight block 321 below, so that the wave-damping net 210 can remain unfolded and straight, avoiding wrinkles, loosening or folding due to force in one direction.

[0035] While the counterweight 321 effectively tightens the wave-dissipating net 210, excessive weight can cause the entire net to sink too much, affecting its effective area of ​​action in the water. The floating block 322, by providing partial buoyancy, can limit the sag of the wave-dissipating net 210, keeping it within the optimal wave-dissipating depth range.

[0036] During wave fluctuations, the floating block 322 can rise and fall with the waves, providing a certain degree of buffering and following. Compared to a completely rigid structure, this flexible response mechanism greatly reduces the direct impact force on the wave-dissipating net 210 body, lowering the risk of damage.

[0037] Of course, it is understandable that the tension and flexibility of the wave-damping net 210 can be flexibly adjusted by changing the number, position, and buoyancy of the floating blocks 322. This allows this embodiment to adapt to the application needs of different sea areas and different wind and wave conditions, and has high environmental adaptability and adjustability.

[0038] Please continue reading. Figure 1 , Figure 2 For example, the number of floating blocks 322 corresponds to the number of counterweights 321. Furthermore, the floating blocks 322 are symmetrically arranged on the wave-damping net 210 along the counterweights 321. This symmetrical arrangement ensures that each counterweight 321 has a corresponding floating block 322, making the forces on the entire wave-damping net 210 more balanced in both the horizontal and vertical directions. This helps reduce local stress concentration and prevents the wave-damping net 210 from deforming or being damaged due to excessive force on one side or at one point.

[0039] The symmetrical layout facilitates standardized production and installation, reducing on-site adjustments. When maintenance or component replacement is required, the clearly defined locations and relationships of each component allow for faster and more accurate completion of the work.

[0040] In one embodiment, exemplarily, such as Figure 1 , Figure 2 As shown, the first fixing part 310 includes a mooring cable 311, one end of which is connected to the floating pipe 110, and the other end of which is connected to an underwater anchor block 312. The mooring cable 311 connects the floating pipe 110 to the underwater anchor block 312, ensuring that the floating pipe 110 can only float within a set range, preventing it from drifting out of the target area with the current or waves. This ensures the overall positional stability of the wave-damping structure, allowing it to be reliably positioned around the photovoltaic equipment for a long period.

[0041] The marine environment is characterized by complex factors such as tides, waves, and ocean currents. The mooring line 311 has a certain degree of flexibility, allowing the floating pipe 110 to rise and fall with the waves within a small range, thereby avoiding structural damage caused by rigid connections. At the same time, the mooring line 311 can also absorb some impact energy, playing a buffering role.

[0042] The structure of the mooring cable 311 and anchor block 312 is easy to modularly design and standardized in construction, making it suitable for large-scale deployment. If any part is damaged, such as cable wear or breakage, it can be easily replaced locally without affecting the overall structure. Furthermore, the anchor block 312 is typically buried in the seabed, possessing strong grip and the ability to withstand significant tensile forces. Extreme weather is common at sea; this embodiment provides reliable fixation even under extreme weather conditions such as typhoons and storm surges, preventing the entire wave-dissipating structure from being washed away or damaged.

[0043] It should be noted that, depending on the actual situation, the horizontal position and tilt angle of the floating pipe 110 can be controlled by adjusting the length of the mooring cable 311, thereby optimizing the spatial arrangement of the entire wave-dissipating net 210, so that this embodiment can have good wave-dissipating capabilities in any position or under any circumstances, depending on the actual situation.

[0044] In one embodiment, exemplarily, such as Figure 1 , Figure 2 As shown, at least three mooring lines 311 are evenly distributed on the floating pipe 110. Furthermore, mooring lines 311 are also provided at the ends of the floating pipe 110. The at least three mooring lines 311 evenly distributed on the floating pipe 110 form a multi-point support structure, which effectively enhances the stability of the floating pipe 110 in the water and reduces swaying and displacement caused by factors such as water flow and wind. End reinforcement, that is, the additional provision of mooring lines 311 at the ends of the floating pipe 110, further improves the overall structure's resistance to overturning, which is especially important when facing strong winds or large waves.

[0045] The presence of multiple mooring lines 311 allows external forces to be distributed more evenly across the lines, rather than being concentrated in one area, thereby reducing the load on individual connection points or mooring lines 311. The mooring lines 311 located at the ends and on the tube body help balance forces from different directions on the floating tube 110, preventing structural deformation or damage due to excessive force on one side, and enabling this embodiment to adapt to waves from different directions.

[0046] Setting up multiple mooring lines 311 also increases redundancy and improves safety. Even if some mooring lines 311 fail due to wear, breakage, or other unexpected events, the other lines can still provide sufficient support to ensure that the entire structure does not immediately lose control.

[0047] In one embodiment, exemplarily, such as Figure 1 , Figure 2 As shown, the distance between two adjacent floating pipes 110 is L1, and the wavelength of the ocean wave is λ, satisfying: L1 ≥ 1 / 4λ. When the spacing between the floating pipes 110 is close to or slightly greater than 1 / 4 of the ocean wave wavelength, the wave-damping net 210 can interact better with the incident wave. At this time, the wave is more likely to undergo refraction, diffraction, and energy dissipation effects when passing between the floating pipes 110 and the wave-damping net 210, thereby significantly weakening the wave energy.

[0048] In real marine environments, the direction and wavelength of waves are not constant. Properly setting the spacing between the floating tubes 110 allows the structure to adapt to waves of different directions and wavelengths. Especially when facing obliquely incident waves, controlling the spacing between the floating tubes 110 helps maintain good overall response characteristics in this embodiment.

[0049] Please continue reading. Figure 1 , Figure 2 For example, the vertical distance between the counterweight 321 and the float 110 is L2, satisfying: L2 ≥ 2λ. In a marine environment, the impact of waves is mainly concentrated near the water surface, and the wave energy decays rapidly with increasing depth. When L2 ≥ 2λ, the counterweight 321 has penetrated into a "still water zone" where the wave influence is minimal or even negligible, thus avoiding swaying, drifting, or resonance caused by wave fluctuations.

[0050] It should be noted that wave theory research and experiments have found that wave energy is mainly concentrated near the water surface, with nearly 90% of wave energy concentrated at a depth of three times the wave height below the surface. However, in this embodiment, the coverage depth of the wave-dissipating net 210 is only two times the wave height. Despite this mismatch, the suspension depth of the wave-dissipating net 210 in this embodiment already covers the main wave disturbance area. Combined with the tension structure formed by the counterweight 321 and the floating block 312, a relatively effective energy dissipation effect can still be achieved. Furthermore, this embodiment also comprehensively considers assembly factors, as well as engineering feasibility and structural stability. Specifically, if the nylon net is set too deep, it may lead to increased suspension difficulty, excessive stress, complex maintenance, and increased drag due to the structure, which is not conducive to engineering implementation and stability control. In this embodiment, setting the coverage depth of the wave-dissipating net 210 to two times the wave height ensures that the overall structure of this embodiment is more stable and easier to assemble, while also dissipating the main energy of the waves, thus protecting the photovoltaic power generation equipment. The structure is reasonable and highly practical.

[0051] In one embodiment, exemplarily, such as Figure 1As shown, the float 110 includes a hollow shaft filled with a floatation filler, and a spiral plate 120 is wound around the outside of the hollow shaft. Using lightweight, high-strength materials, such as expandable polystyrene foam or polyethylene foam, to fill the hollow shaft significantly increases the overall buoyancy of the float 110, ensuring its stable floating on the water surface. The externally wound spiral plate 120 not only increases the surface area of ​​the structure but also enhances the lateral stability of the float 110 through the rotational effect of water flow, reducing rollover or tilting caused by waves. The spiral plate 120 also provides additional mechanical support for the float 110, enhancing its resistance to external impacts and reducing the risk of deformation and damage.

[0052] This embodiment also provides a marine photovoltaic power generation system, including photovoltaic power generation equipment and wave-damping structures as described in any of the above embodiments. The wave-damping structures are evenly distributed around the circumference of the photovoltaic power generation equipment to dissipate sea waves.

[0053] The marine photovoltaic power generation system of this embodiment includes the wave-dissipating structure in any of the above embodiments, and thus possesses all the beneficial effects of the above wave-dissipating structure, which will not be repeated here.

[0054] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0055] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A wave-damping structure for offshore photovoltaic power generation equipment, characterized in that, include: A floating assembly (100) comprising at least two float tubes (110) capable of floating on the water surface; Wave-damping assembly (200), the wave-damping assembly (200) includes a wave-damping net (210), the end of the wave-damping net (210) is connected to the floating pipe (110) to form an arc-shaped net hanging down in the vertical direction between two adjacent floating pipes (110); The fixing component (300) includes a first fixing part (310) and a second fixing part (320). The first fixing part (310) is used to fix the floating component (100). The second fixing part (320) includes at least a counterweight (321). The counterweight (321) is disposed at the bottom or near the bottom of the wave-dissipating net (210) to tension the wave-dissipating net (210).

2. The wave-damping structure according to claim 1, characterized in that, Multiple counterweights (321) are evenly distributed on the wave-damping net (210) along the axial direction of the floating pipe (110).

3. The wave-damping structure according to claim 1, characterized in that, The second fixing part (320) includes a floating block (322), which is disposed on the end of the wave-damping net (210) near the end of the floating pipe (110); Alternatively, the floating block (322) may be disposed on the wave-damping net (210) between the counterweight block (321) and the floating tube (110).

4. The wave-damping structure according to claim 3, characterized in that, The number of floating blocks (322) is set in correspondence with the number of counterweight blocks (321); Furthermore, the floating block (322) is symmetrically arranged on the wave-damping net (210) along the counterweight block (321).

5. The wave-damping structure according to claim 1, characterized in that, The first fixing part (310) includes a mooring cable (311), one end of which is connected to the floating pipe (110), and the other end of which is connected to an underwater anchor block (312).

6. The wave-damping structure according to claim 5, characterized in that, At least three mooring lines (311) are evenly distributed on the floating pipe (110); Furthermore, the end of the floating tube (110) is also provided with a mooring cable (311).

7. The wave-damping structure according to claim 1, characterized in that, The distance between two adjacent floating pipes (110) is L1, and the wavelength of the ocean wave is λ, satisfying: L1≥1 / 4λ.

8. The wave-damping structure according to claim 7, characterized in that, The vertical distance between the counterweight (321) and the float (110) is L2, which satisfies: L2≥2λ.

9. The wave-damping structure according to claim 1, characterized in that, The float tube (110) includes a hollow shaft filled with a filler for buoyancy, and a spiral plate (120) is wound around the outside of the hollow shaft.

10. A marine photovoltaic power generation system, characterized in that, Includes photovoltaic power generation equipment and the wave-damping structure described in any one of claims 1 to 9; The wave-damping structures are evenly distributed around the circumference of the photovoltaic power generation equipment to dissipate sea waves.

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