WO2024037269A1 - Wave dissipation apparatus for waterborne photovoltaic device - Google Patents

Abstract

A wave dissipation apparatus for a waterborne photovoltaic device, comprising wave dissipation assemblies (1), fixing assemblies (2), and a supporting assembly (3). The supporting assembly (3) is mounted in the fixing assemblies (2), and the wave dissipation assemblies (1) are located in a cavity formed by the supporting assembly (3) and the fixing assemblies (2). The wave dissipation apparatus is arranged around a photovoltaic array, so that water flow impact can be attenuated, and the photovoltaic array is prevented from being damaged.

Description

Wave elimination device for water photovoltaic devices Technical field

The utility model relates to floating photovoltaic power generation equipment on the water surface, a connection method of an array of floating photovoltaic power generation equipment, a wave elimination structure and a connection method thereof, and specifically relates to a wave prevention and wave elimination device for water photovoltaic equipment.

Background technique

Currently, water photovoltaics on the market use a unitary combination of PVC floating bodies, stainless steel frames, and photovoltaic panels. This combination presents a buoyant four-point support. The connection between each unit uses rigid connections such as bolts and buckles. This type of connection and fixation prevents relative displacement between the two objects, but this method will cause stress to concentrate on the fixed point and its surrounding locations.

At the same time, water photovoltaics through the above connection method can only produce a slight upward and downward displacement when the water surface fluctuates. This connection method cannot cause a large displacement difference between photovoltaic units or large flipping at the connection point. Therefore, ordinary photovoltaic fixed connection methods on the market are difficult to apply in the ocean.

Due to the continuous water surface fluctuations in the ocean water surface, the frequency and height of the fluctuations are much larger than the fluctuation scale in lakes on land. In the event of typhoon weather, the height of the fluctuation can reach 15m. Therefore, in this environment, the number of water photovoltaic applications in the ocean is far less than the number of water photovoltaics in the inland. Even when photovoltaics are used in the ocean, very thick and large concrete is generally used as the foundation. This makes infrastructure account for a larger proportion of the construction cost of floating photovoltaics, making it take longer for owners who invest in photovoltaic power generation to recover their investment. Compared with the investment return period of ten to twenty years for floating photovoltaic in inland lakes, the payback period of offshore photovoltaic has caused most projects to lose interest from owners during the feasibility study stage.

On the other hand, the complex environment at sea includes: high salt environment, high impact, adhesion of fouling organisms, heavy wind load and other adverse conditions. Under such conditions, photovoltaic modules of water photovoltaics in marine areas are more susceptible to damage. Rigid materials and immovable fixed connections have poor resistance to dynamic loads.

Utility model content

Based on the above technical background, the inventor of the present invention has forged ahead and provided a wave elimination device for water photovoltaic devices. The wave elimination device is arranged around the photovoltaic device. The wave elimination device of the present utility model includes a wave elimination component. , fixed component and support component, the support component is installed in the fixed component, the wave elimination component is located in the cavity formed by the support component and the fixed component, and the polymer material is wrapped around the wave elimination device, which not only gives the wave elimination device a certain The wave elimination effect can also prevent the wear and tear of the wave elimination structure and avoid the corrosive effect of the marine environment on the wave elimination device. At the same time, the wave elimination device can be arranged in multiple layers and multiple circles around the photovoltaic device, and the inner wave elimination device is closely attached to the Around the photovoltaic device, in order to improve the wind and wave resistance of the photovoltaic device while maintaining the integrity of the photovoltaic array, there is a certain distance between the peripheral wave elimination device and the inner wave elimination device. The setting of the peripheral wave elimination device can further reduce the impact of water flow. , to prevent the photovoltaic array from being damaged.

The utility model provides a wave elimination device for water photovoltaic devices. Specifically, the wave elimination device is arranged around the photovoltaic array;

The wave elimination device includes an inner wave elimination device 4 and a peripheral wave elimination device 5. The inner wave elimination device 4 is close to the periphery of the photovoltaic array, and the peripheral wave elimination device 5 is arranged on the periphery of the inner wave elimination device 4 and connected with it. There is a certain distance between the inner wave elimination devices 4;

Both the inner wave elimination device 4 and the peripheral wave elimination device 5 include a wave elimination component 1, a fixed component 2 and a support component 3. The support component 3 is installed in the fixed component 2, and the wave elimination component 1 is located between the support component 3 and the fixed component. 2 in the cavity formed.

The distance between the inner wave elimination device 4 and the peripheral wave elimination device 5 is 20 to 100m.

There are multiple wave elimination components 1 , and the wave elimination components 1 are selected from one or more of a spherical structure, a cylindrical structure, a polyhedron composed of a truncated cone, a plurality of convex arch structures, or other structures with multiple concavities and convexities.

The support component 3 includes a plurality of multi-section hollow tubes, and the number of multi-section hollow tubes is two, four, six, eight or ten;

The multi-section hollow pipe contains multiple water isolation compartments.

The diameter of the multi-section hollow tube is 150~2000mm, and the material of the multi-section hollow tube is high molecular polymer.

Multiple fixed components 2 are provided on each multi-section hollow pipe, and the distance between adjacent fixed components 2 is 1000 to 5000 mm.

The outer contour shape of the fixing component 2 is selected from one or more types of circles, rectangles, hexagons, and octagons;

The side length of the fixed component 2 is 1000mm～3000mm.

The fixed component 2 is provided with circular holes with different diameters, including a large circular hole 21, a medium circular hole 22 and a small circular hole 23;

The large circular holes 21 are symmetrically distributed on the outermost ring of the fixed component 2. The number of the large circular holes 21 is the same as the number of multi-section hollow tubes in the support component 3. The middle circular holes 22 are located between adjacent large circular holes 21. The small circular holes 23 are symmetrically distributed around the central circular hole 22.

The inner diameter of the large circular hole 21 is matched with the multi-section hollow tube of the support component 3 with a small gap, and the distance between the centers of adjacent large circular holes 21 is 500mm to 1500mm;

The diameter of the middle circular hole 22 is 500mm～1000mm, and the diameter of the small circular hole 23 is 10～100mm.

Install grid-like walls above or around the wave elimination device;

The cavity formed by the supporting component 3 and the fixing component 2 also includes one or more of gravel, tiles, volcanic stones, and fiber balls.

Description of drawings

Figure 1 shows an above-water photovoltaic array and wave elimination devices located around it in a preferred embodiment of the present invention;

Figure 2 shows an above-water photovoltaic array, surrounding wave elimination devices and peripheral wave elimination devices in a preferred embodiment of the present invention;

Figure 3 shows the main schematic diagram of the wave elimination device in water photovoltaics according to a preferred embodiment of the present invention;

Figure 4 shows a schematic diagram of a water-based photovoltaic wave elimination device including an embedded wave elimination component in a preferred embodiment of the present invention;

Figure 5 shows a schematic diagram of the wave elimination component in a preferred embodiment of the present invention;

Figure 6 shows a schematic cross-sectional view of the fixing assembly in the wave elimination device according to a preferred embodiment of the present invention;

Figure 7 shows the connection method of above-water photovoltaic modules in a preferred embodiment of the present invention;

Figure 8 shows a schematic diagram of the components of a photovoltaic floating body according to a preferred embodiment of the present invention.

Explanation of reference numbers
1-Wave elimination component;
2-Fixed components;
21-Large round hole;
22-Medium round hole;
23-Small round hole;
3-Support components;
4-Inner wave elimination device;
5-Peripheral wave elimination device.

Detailed ways

The present utility model will be described in detail below, and the features and advantages of the present utility model will become clearer and clearer with these descriptions.

The utility model provides a wave elimination device for photovoltaic devices on water. The wave elimination device is arranged around a photovoltaic array. The photovoltaic array is generally rectangular and includes a plurality of photovoltaic floating bodies arranged laterally and longitudinally. The photovoltaic array The floating body includes photovoltaic modules and photovoltaic carriers. As shown in Figure 8, the photovoltaic modules are installed horizontally or at a certain angle on the photovoltaic carrier. On the one hand, the photovoltaic carrier provides buoyancy for the photovoltaic modules. At the same time, a connection structure is installed around the photovoltaic carrier. The connection structure is set on a steel cable so that adjacent photovoltaic floating bodies are connected through the steel cable. The connection method is shown in Figure 7. Set The connection method allows the photovoltaic modules to rotate along the radial direction of the steel cable, improving the ability to withstand wind and waves.

The wave elimination device surrounds the photovoltaic array. The wave elimination device can be arranged in multiple layers and circles around the photovoltaic array. Preferably, the wave elimination device includes an inner layer of wave elimination device 4 and a peripheral wave elimination device 5. The inner layer of wave elimination device 4. Closely adhere to the surroundings of the photovoltaic array, as shown in Figure 1, to improve the wind and wave resistance of the photovoltaic array and maintain the integrity of the photovoltaic array. The peripheral wave elimination device 5 is arranged on the periphery of the inner wave elimination device 4 and has a certain distance from the inner wave elimination device 4, which can effectively reduce the impact of water flow, reduce the impact on the photovoltaic array, and avoid damage to the photovoltaic array, as shown in Figure 2 shown.

The distance between the inner wave elimination device 4 and the peripheral wave elimination device 5 is 20 to 100 m, preferably 40 to 80 m, and more preferably 50 m.

Through the setting of inner and outer wave elimination devices, the wave elimination effect on the photovoltaic array is improved, and the impact of waves on the photovoltaic array is reduced, making it suitable for use in areas with high wind and wave frequency and high waves, making up for the inability of general water-based photovoltaics to be used in this scenario. Short board.

The inner wave elimination device 4 and the peripheral wave elimination device 5 both include a wave elimination component 1, a fixed component 2 and a support component 3. The support component 3 is installed in the fixed component 2, and the wave elimination component 1 is located between the support component 3 and the support component 3. In the cavity formed by the fixed component 2, as shown in Figure 4.

The wave elimination device is surrounded by high molecular polymer material, which has the advantage of corrosion resistance. It not only gives the wave elimination device a certain wave elimination effect, but also prevents the wave elimination structure from being damaged. It can effectively avoid chemical corrosion, biological corrosion, electrochemical corrosion, etc. in the marine environment. In addition, the polymer material has a certain elasticity and has a certain tolerance to the dynamic load caused by the impact of waves.

There are multiple wave elimination components 1. The wave elimination components 1 are selected from one or more of a spherical structure, a cylindrical structure, a polyhedron composed of a truncated cone, a plurality of convex arch structures or other structures with multiple concavities and convexities, It is preferably selected from one or more of a polyhedron composed of a truncated cone, an arched structure with multiple convexities, or other structures with multiple concavities and convexities, as shown in Figure 5 .

When the wave elimination component has the above structure, especially when it has a polyhedral structure, the water flow will be irregularly reflected after entering, thereby reducing the impact of the water flow and reducing the fluctuation of the water flow entering the interior.

In order to prevent the wave elimination component 1 from wearing out the wave elimination structure, the edges, corners, convex parts, etc. of the wave elimination component are all wrapped with high molecular polymer materials.

The support component 3 includes a plurality of multi-section hollow tubes. Compared with solid tubes, the hollow tubes have a smaller density and can ensure buoyancy. The number of multi-section hollow tubes is two, four, six, eight or ten hollow tubes, and the number of multi-section hollow tubes is preferably four.

Preferably, the multi-section hollow tube contains multiple water-isolating chambers, which can store air and ensure buoyancy. When one water-isolating chamber leaks, other water-isolating chambers will not be affected.

More preferably, the diameter of the multi-section hollow tube is 150~2000mm, preferably 200~1000mm. The material of the multi-section hollow tube is preferably high molecular polymer, and its strength is higher than the 8MPa static pressure strength, ensuring the strength while having a certain Elastic and has good tolerance to dynamic loads caused by wave impact.

The multi-section hollow pipes are seamlessly connected to form an integrated pipe body, which prevents the connecting parts from bearing excessive impact force and improves the wave elimination effect of the wave elimination device.

Multiple fixing assemblies 2 are provided on each multi-section hollow tube so that the relative positions between the multiple hollow tubes remain unchanged. The distance between adjacent fixing components 2 is 1000mm~5000mm, preferably 1500mm~2500mm.

The outer contour shape of the fixing component 2 is selected from one or more of circles, rectangles, hexagons, and octagons, preferably one or both of circles and rectangles, and more preferably square. .

The side length of the fixing component 2 is 1000mm~3000mm, preferably 2000mm~2500mm, and more preferably 2000mm~2200mm.

According to a preferred embodiment of the present invention, the fixing component 2 is provided with circular holes with different diameters, including a large circular hole 21, a medium circular hole 22 and a small circular hole 23, as shown in Figure 6.

The large circular holes 21 are located on the outermost ring of the fixed component 2. The large circular holes 21 are symmetrically distributed. The number of the large circular holes 21 is the same as the number of multi-section hollow tubes in the support component 3. As shown in Figure 6, they are used to install the support component 3. .

The support component 3 forms the peripheral structure of the wave elimination device. The mechanical strength of this structure is greater than the mechanical strength of the main material of the water photovoltaic, and can provide support for the photovoltaic array. At the same time, the support component 3 is arranged at the outermost periphery of the fixed component, which not only prevents the wave elimination component 1 from slipping from the wave elimination device, but also provides the main support force for the entire wave elimination device.

Preferably, the inner diameter of the large circular hole 21 is matched with the multi-section hollow tube of the support assembly 3 with a small gap to avoid relative displacement of the multi-section hollow tube in the large round hole. The distance between the centers of adjacent large circular holes 21 is 500mm to 1500mm, preferably It is 1000mm～1500mm.

The middle circular hole 22 is located between adjacent large circular holes 21, as shown in Figure 6. The diameter of the middle circular hole 22 is 500mm~1000mm, preferably 800mm~1000mm.

The small round holes 23 are located around the middle round hole 22 and are symmetrically distributed. As shown in FIG. 6 , the diameter of the small round holes 23 is 10 to 100 mm, preferably 50 to 100 mm.

The medium round hole 22 and the small round hole 23 are mainly used to penetrate small pipe bodies, cable signal transmission lines, stainless steel wire ropes, etc. in the present utility model to prevent the small pipe bodies or cable signal transmission lines penetrating the interior from being squeezed and pulled by external forces. and entanglement with each other, and at the same time, the material usage of the fixing component 2 can be saved, effectively reducing costs.

In addition, when the multi-section hollow tubes, small pipe bodies, cable signal transmission lines, stainless steel wire ropes, etc. that support the component 3 need to be repaired, several stainless steel wire ropes can be passed through the fixed assembly. into the small round hole 23 in the component 2 to ensure that the fixed component 2 cannot be displaced. When replacing or installing the pipe body, insert the pipe body into the hole of the fixing component 2, and through the fixed connection between the support component 3 and the fixing component 2, a wave elimination device as shown in Figure 4 is obtained.

More preferably, the large round holes 21 are symmetrically distributed on the four corners of the fixed component 2. As shown in Figure 6, the support component 2 includes four multi-section hollow tubes, and the multi-section hollow tubes of the support component 2 are arranged in pairs from top to bottom.

According to a preferred embodiment of the present invention, a grid-like wall is mounted above or around the wave elimination device, as shown in Figure 3, which can not only block garbage in the water or provide a platform for walking during maintenance, but also further reduce the The energy of water flow impact prevents the photovoltaic array from being damaged by water flow impact.

In a preferred embodiment of the present invention, the cavity formed by the support component 3 and the fixing component 2 also includes one or more of gravel, tiles, volcanic stones, and fiber balls to further reduce the water flow. fluctuation.

The beneficial effects of this utility model are:

(1) This utility model uses steel wire ropes as the main body to connect the above-water photovoltaic modules in series and bear the main load-bearing structure. At the same time, a wave-proof device is installed on its periphery, which greatly enhances the dynamic load caused by the waves on the water caused by the above-water photovoltaic. the ability to withstand;

(2) The wave prevention device of the utility model includes two layers of wave prevention devices: an inner layer and an outer layer. Both the inner layer of wave prevention device and the outer layer of wave prevention device are made of several tubes made of polymer materials to form a support assembly. The mechanical strength of the structure is It is greater than the mechanical strength of the main material of the photovoltaic system on the water, which can provide support for the photovoltaic array. At the same time, a wave elimination structure is placed between the tubes supporting the components to reduce the impact of water flow, reduce the impact on the photovoltaic array, and avoid the possibility of damage;

(3) The structural method adopted by this utility model is firm and less expensive than fixed methods such as concrete piling. It can be used at sea. It can be used on the periphery according to the actual situation. The wave prevention device can be laid out in multiple layers and circles;

(4) The external wave protection device described in this utility model is easy to disassemble and install. The impact of sea wind and waves is strong and weathering wear is strong. The external wave protection device can be installed and disassembled in an integrated manner. By replacing wearing parts, the life of the photovoltaic array can be effectively extended. service life;

(5) The wave prevention device described in the present utility model can be applied to water photovoltaics in areas with high wind and wave frequency or high waves, making up for the shortcomings of general water photovoltaics that cannot be used in such scenarios.

In the description of the present utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "back", etc. indicate the orientation or positional relationship based on the work of the present utility model. The orientation or positional relationship in the state is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. Utility model restrictions. Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. , or an integrated connection is common; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

The present invention has been described above with reference to the preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, various substitutions and improvements can be made to the present utility model, which all fall within the protection scope of the present utility model.

Claims (10)

1. A wave elimination device for water photovoltaic devices, characterized in that the wave elimination device is arranged around the photovoltaic array;

   The wave elimination device includes an inner wave elimination device (4) and a peripheral wave elimination device (5). The inner wave elimination device (4) is close to the surroundings of the photovoltaic array, and the peripheral wave elimination device (5) is arranged on the inner layer. The periphery of the wave device (4), and there is a certain distance between it and the inner wave elimination device (4);

   Both the inner wave elimination device (4) and the peripheral wave elimination device (5) include a wave elimination component (1), a fixed component (2) and a support component (3). The support component (3) is installed on the fixed component (2) ), the wave elimination component (1) is located in the cavity formed by the support component (3) and the fixed component (2).
2. The wave elimination device according to claim 1, characterized in that:

   The distance between the inner wave elimination device (4) and the peripheral wave elimination device (5) is 20 to 100m.
3. The wave elimination device according to claim 1, characterized in that:

   There are multiple wave elimination components (1), and the wave elimination components (1) are selected from one of a spherical structure, a cylindrical structure, a polyhedron composed of a truncated cone, a plurality of convex arch structures, or other structures with multiple concavities and convexities. Or several.
4. The wave elimination device according to claim 1, characterized in that:

   The support assembly (3) includes a plurality of multi-section hollow tubes, and the number of multi-section hollow tubes is two, four, six, eight or ten;

   The multi-section hollow pipe contains multiple water isolation compartments.
5. The wave elimination device according to claim 4, characterized in that:

   The diameter of the multi-section hollow tube is 150~2000mm, and the material of the multi-section hollow tube is high molecular polymer.
6. The wave elimination device according to claim 4, characterized in that:

   Multiple fixing components (2) are provided on each multi-section hollow pipe, and adjacent fixing components (2) The distance between them is 1000mm~5000mm.
7. The wave elimination device according to claim 1, characterized in that:

   The outer contour shape of the fixed component (2) is selected from one or more types of circles, rectangles, hexagons, and octagons;

   The side length of the fixed component (2) is 1000~3000mm.
8. The wave prevention device according to claim 1, characterized in that:

   The fixed component (2) is provided with round holes with different diameters, including a large round hole (21), a medium round hole (22) and a small round hole (23);

   The large circular holes (21) are symmetrically distributed on the outermost ring of the fixed component (2). The number of the large circular holes (21) is the same as the number of multi-section hollow tubes in the support component (3). The middle circular hole (22) is located in the corresponding position. Between adjacent large circular holes (21), small circular holes (23) are symmetrically distributed around the middle circular hole (22).
9. The anti-wave device according to claim 8, characterized in that:

   The inner diameter of the large circular hole (21) is matched with the multi-section hollow tube of the support assembly (3) with a small gap, and the distance between the centers of adjacent large circular holes (21) is 500 to 1500mm;

   The diameter of the middle round hole (22) is 500-1000mm, and the diameter of the small round hole (23) is 10-100mm.
10. The wave prevention device according to claim 1, characterized in that:

    Install grid-like walls above or around the wave elimination device;

    The cavity formed by the supporting component (3) and the fixing component (2) also includes one or more of gravel, tiles, volcanic stones, and fiber balls.