Floating type photovoltaic self-cleaning device based on wave energy

Abstract

The invention provides a floating type photovoltaic self-cleaning device based on wave energy. The floating type photovoltaic self-cleaning device comprises a photovoltaic supporting table, a pipeline, a water pumping device and a wave energy collecting assembly. The photovoltaic supporting table comprises a buoy floating on the water surface and a deck arranged above the buoy, the buoy is used for providing buoyancy, and the deck is used for installing a photovoltaic assembly. A pipeline is arranged in the photovoltaic supporting table in a penetrating mode, the lower end of the pipeline penetrates through the buoy to make contact with the water surface, and the upper end of the pipeline penetrates through the deck. The water pumping device is arranged in the lower end of the pipeline and makes contact with the water surface, and water is pumped to flow upwards along the pipeline to flush the photovoltaic assembly. The wave energy collecting assembly floats on the water surface, is connected with the water pumping device and collects and uses wave energy to drive the water pumping device to operate. The device can be driven by wave energy, realizes automatic cleaning and cooling of the photovoltaic panel, improves the photovoltaic power generation efficiency, does not depend on external energy, and is more environment-friendly and energy-saving.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic equipment, and in particular to a floating photovoltaic self-cleaning device based on wave energy. Background Art

[0002] With the increasing global awareness of environmental protection and the sharp rise in demand for clean energy, photovoltaic power generation has become one of the main ways to achieve sustainable energy. As a new direction of photovoltaic power generation technology, offshore floating photovoltaic platforms can effectively utilize the vast space resources of the ocean and have great development potential. However, the particularity of the marine environment, especially its high salinity, foggy, and frequent biological activities, makes the surface of photovoltaic panels extremely susceptible to erosion and coverage by impurities such as seawater salt spray and bird droppings. These attachments block the sunlight, reduce the effective illumination area received by the photovoltaic panels, and lead to a decrease in the efficiency of photovoltaic panels. In addition, the high temperature of the marine environment plus the heat generated by the photovoltaic panels themselves, if not effectively dissipated, will directly lead to an increase in the temperature of the photovoltaic panels, reduce the power generation efficiency of the photovoltaic panels, and affect the overall power generation performance. Therefore, how to effectively clean the surface of photovoltaic panels and maintain their suitable working temperature has become a key technical issue.

[0003] At present, offshore floating photovoltaic platforms mainly rely on manual or mechanical methods for cleaning, which is not only time-consuming, labor-intensive, inefficient, and costly, but also has operational risks and is prone to damage to photovoltaic panels due to improper operation. In addition, traditional photovoltaic panel cooling technologies, such as air cooling or water cooling, usually require additional energy consumption, increase the complexity and operating costs of the system, and are susceptible to corrosion and environmental impacts in the marine environment, resulting in high maintenance costs. Summary of the invention

[0004] The purpose of the present invention is to provide a floating photovoltaic self-cleaning device based on wave energy to solve the above problems. It can effectively solve the cleaning and cooling problems of photovoltaic panels in offshore floating photovoltaic platforms and significantly improve the efficiency and stability of photovoltaic power generation systems.

[0005] The present invention proposes a floating photovoltaic self-cleaning device based on wave energy, comprising:

[0006] A photovoltaic support platform, comprising a buoy floating on the water surface and a deck arranged above the buoy, wherein the buoy is used to provide buoyancy, and the deck is used to install photovoltaic modules;

[0007] A pipeline is arranged inside the photovoltaic support platform, with a lower end passing through the buoy to contact the water surface and an upper end passing through the deck;

[0008] A water pump is arranged at the lower end of the pipe and contacts the water surface, and draws water to flow upward along the pipe to wash the photovoltaic module;

[0009] The wave energy collection component floats on the water surface, is connected to the water pump, collects and uses wave energy to drive the water pump to operate.

[0010] In one embodiment, the water pump is a turbine, which drives water to flow upward along the pipeline through the rotation of blades.

[0011] In one embodiment, the wave energy collection assembly includes a float, a float and a connecting rod mechanism;

[0012] The floating ring is a hollow ring and floats horizontally on the water surface;

[0013] The float is in the shape of a hollow cylinder and is vertically sleeved in the floating ring;

[0014] One end of the connecting rod mechanism is connected to the outer wall of the floating ring, and the other end is connected to the turbine;

[0015] The waves drive the floating ring and the float to generate relative vertical displacement, and convert the linear motion into rotational motion through the connecting rod mechanism, thereby driving the turbine to rotate.

[0016] In one embodiment, the wave energy-based floating photovoltaic self-cleaning device further comprises a mechanical energy storage mechanism, which is respectively connected to the wave energy collection component and the water pump, and is used to store the mechanical energy converted from the wave energy.

[0017] In one embodiment, the mechanical energy storage mechanism is a spring that converts mechanical energy into elastic potential energy for storage.

[0018] In one embodiment, the upper end of the pipeline is also connected to a rotating nozzle.

[0019] In one embodiment, the photovoltaic support platform further includes a plurality of support rods, the buoy is horizontally placed and floats on the water, the deck is horizontally arranged, and the support rods are vertically arranged between the buoy and the deck.

[0020] In one embodiment, the deck is square, each photovoltaic support platform includes four pontoons, and the four pontoons are connected end to end to form a square area, and the area of ​​the square surrounded by the pontoons is smaller than the area of ​​the deck;

[0021] The support rods are respectively arranged between the four corners of the deck and the ends of the buoys, between the midpoints of the sides of the deck and the midpoints of the corresponding lower buoys, and between the midpoints of the buoys arranged oppositely.

[0022] In one embodiment, a group of wave energy collection components are respectively disposed at both ends of each buoy.

[0023] In one embodiment, the deck is formed by crisscrossing hollow trusses.

[0024] Compared with the prior art, the beneficial effects of the floating photovoltaic self-cleaning device based on wave energy of the present invention are:

[0025] 1) The present invention utilizes ocean wave energy, introduces seawater into the pipeline through internal pipelines and pumping systems, and sprays it out through nozzles at the deck above the photovoltaic support platform, so as to wash away salt mist, dust, bird droppings and other impurities on the surface of the photovoltaic panel, thereby realizing self-cleaning of the photovoltaic panel. At the same time, the sprayed seawater can also take away the heat on the surface of the photovoltaic panel, realize natural water cooling of the photovoltaic panel, effectively reduce the working temperature of the surface of the photovoltaic panel, and improve the efficiency of photovoltaic power generation. It is particularly suitable for high-temperature marine environments.

[0026] 2) The present invention is driven by wave energy to achieve automatic cleaning and cooling of photovoltaic panels. It does not rely on external energy, is more environmentally friendly and energy-saving, and does not require additional manual or mechanical intervention, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic structural diagram of a floating photovoltaic self-cleaning device based on wave energy according to an embodiment of the present invention;

[0028] Figure 2 This is a working principle diagram of a wave energy collection component in a floating photovoltaic self-cleaning device based on wave energy according to an embodiment of the present invention;

[0029] Figure 3 This is a water flow diagram of a floating photovoltaic self-cleaning device based on wave energy according to an embodiment of the present invention when it is working.

[0030] Reference numerals

[0031] 1. Photovoltaic module, 2. Photovoltaic support platform, 21. Deck, 22. Support rod, 23. Buoy, 3. Pipeline, 4. Wave energy collection component, 41. Floating ring, 42. Float, 43. Connecting rod mechanism, 5. Pump. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments of the specification. It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] Secondly, the present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure may not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0034] In addition, the term "one embodiment" or "an embodiment" in this application refers to a specific feature, structure or characteristic that can be included in at least one implementation of the present invention. The term "in one embodiment" or "an embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it an embodiment that is exclusive or selectively mutually exclusive with other embodiments. The term "including" or "comprising" indicates the presence of the claimed feature, but does not exclude the presence of one or more other features.

[0035] The present invention proposes a floating photovoltaic self-cleaning device based on wave energy, see Figure 1 , Figure 2 , Figure 3 , including a photovoltaic support platform 2, a pipeline 3, a pump 5 and a wave energy collection component 4. The photovoltaic support platform 2 includes a buoy 23 floating on the water surface, a deck 21 arranged above the buoy 23, and a plurality of support rods 22. The buoy 23 floats horizontally on the water surface to provide buoyancy. The deck 21 is horizontally arranged for installing the photovoltaic component 1. The support rod 22 is vertically arranged between the buoy 23 and the deck 21. The pipeline 3 is arranged through the inside of the photovoltaic support platform 2, the lower end passes through the buoy 23 to contact the water surface, and the upper end passes through the deck 21. The pump 5 is arranged at the lower end of the pipeline 3 and contacts the water surface, and the water flow is drawn to flow upward along the pipeline 3 to flush the photovoltaic component 1, such as Figure 3 The arrow direction indicates the direction of water flow. The wave energy collection component 4 floats on the water surface, connected to the water pump 5, collects and uses wave energy to drive the water pump 5 to operate. It should be noted that the photovoltaic component 1 is usually composed of a plurality of photovoltaic panels, each of which is evenly arranged on the deck 21 and arranged at a certain inclination angle such as 15°. The waterline of the entire floating photovoltaic self-cleaning device should be located near the buoy 23.

[0036] The water pump 5 in one embodiment of the present invention is a turbine, which drives water to flow upward along the pipeline 3 through the rotation of blades.

[0037] The wave energy collection assembly 4 of one embodiment of the present invention includes a float 41, a float 42 and a connecting rod mechanism 43. The float 41 is a hollow ring and floats horizontally on the water surface. The float 42 is a hollow cylinder and is vertically sleeved in the float 41. One end of the connecting rod mechanism 43 is connected to the outer wall of the float 41, and the other end is connected to the turbine. Under the action of waves, the float 42 floats freely on the water surface with the waves, and the float 41 is affected by the pitch and heave of the device, and a relative vertical displacement (such as Figure 2 The direction of movement is shown by the arrow in the middle), thereby generating energy, converting wave energy into mechanical energy, and then converting the mechanical linear motion into rotational motion through the connecting rod mechanism 43, thereby driving the turbine to rotate.

[0038] The floating photovoltaic self-cleaning device based on wave energy in one embodiment of the present invention is also provided with a mechanical energy storage mechanism, which is respectively connected to the wave energy collection component 4 and the water pump 5, and is used to store the mechanical energy converted from the wave energy. For example, the mechanical energy storage mechanism can be a clockwork, which converts the mechanical energy into elastic potential energy and stores it. When the wave propulsion device floats up and down, the wave energy is collected and stored in the mechanical energy storage mechanism, and the stored energy drives the turbine to introduce seawater through the pipeline 3 and spray it above the photovoltaic panel. The sprayed seawater can simultaneously achieve surface cleaning and temperature cooling of the photovoltaic panel.

[0039] The floating photovoltaic self-cleaning device of the present invention has a connecting pipe inside and is directly connected to the seawater at the lower buoy. Under normal circumstances, its water level is flush with the waterline. The reserved energy of wave energy drives the turbine at the connection point with the seawater to rotate, and then extracts seawater to flow upward, flows through the support rod to the deck, and is ejected at high speed at the photovoltaic panel installation point to achieve the cleaning and water cooling effect. Of course, the wave energy collected by the wave energy collection component can also be converted into electrical energy, and then the pump 5 is driven by electrical energy to operate. Accordingly, an energy storage mechanism can also be configured to store unused electrical energy for backup.

[0040] The upper end of the pipe 3 of one embodiment of the present invention is also connected to a rotating nozzle (not shown in the figure), that is, the spray angle of the nozzle is designed to be adjustable to ensure that the surface of the photovoltaic panel can be effectively covered in different marine environments to achieve the best cleaning and cooling effect.

[0041] The deck 21 of one embodiment of the present invention is square, and each photovoltaic support platform 2 includes four pontoons 23, and the four pontoons 23 are connected end to end to form a square area, and the area of ​​the square surrounded by the pontoons is smaller than the area of ​​the deck. Such a structural design is more stable, not only can it carry photovoltaic panels, but also can effectively disperse the wind and wave loads at sea, and provide excellent buoyancy and wind and wave resistance. The support rods 22 are respectively arranged between the four corners of the deck 21 and the ends of the pontoons 23, between the midpoints of each side of the deck 21 and the midpoints of the corresponding lower pontoons 23, and between the midpoints of the relatively arranged pontoons 23. Of course, for the stability of the photovoltaic support platform, the support rods 22 can also be installed in different positions as needed. The shape of the deck 21 and the enclosed shape of the pontoons 23 can also be selected from other shapes other than squares.

[0042] In one embodiment of the present invention, a group of wave energy collection components 4 are respectively provided at both ends of each buoy 23 .

[0043] The deck 21 of one embodiment of the present invention is composed of crisscross hollow trusses.

[0044] It should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inside" and "outside" are all based on the directions or positional relationships shown in the drawings. Such expressions are only intended to make the description of the present invention simpler and more convenient, and do not indicate or imply that the referred parts must have a specific direction or be constructed and operated in a specific direction.

[0045] In addition, in the present application, unless otherwise clearly stipulated and limited, the terms such as "installation", "connection", "setting" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. Those skilled in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances.

[0046] The present invention has the following beneficial effects:

[0047] 1) The present invention utilizes ocean wave energy, introduces seawater into the pipeline through internal pipelines and pumping systems, and sprays it out through nozzles at the deck above the photovoltaic support platform, so as to wash away salt mist, dust, bird droppings and other impurities on the surface of the photovoltaic panel, thereby realizing self-cleaning of the photovoltaic panel. At the same time, the sprayed seawater can also take away the heat on the surface of the photovoltaic panel, realize natural water cooling of the photovoltaic panel, effectively reduce the working temperature of the surface of the photovoltaic panel, and improve the efficiency of photovoltaic power generation. It is particularly suitable for high-temperature marine environments.

[0048] 2) The present invention is driven by wave energy to achieve automatic cleaning and cooling of photovoltaic panels. It does not rely on external energy, is more environmentally friendly and energy-saving, and does not require additional manual or mechanical intervention, thereby reducing maintenance costs.

[0049] The construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., size, structure, shape and proportion, as well as parameter values, mounting arrangements, use of materials, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Without departing from the spirit and essence of the present invention, a person skilled in the art can make various corresponding modifications and changes according to the present invention, but these corresponding modifications and changes should all fall within the scope of protection of the present invention.

Claims

1. A floating photovoltaic self-cleaning device based on wave energy, characterized in that: include: A photovoltaic support platform, comprising a buoy floating on the water surface and a deck arranged above the buoy, wherein the buoy is used to provide buoyancy, and the deck is used to install photovoltaic modules; A pipeline is arranged inside the photovoltaic support platform, with a lower end passing through the buoy to contact the water surface and an upper end passing through the deck; A water pump is disposed at the lower end of the pipe and contacts the water surface, and draws water to flow upward along the pipe to wash the photovoltaic module; The wave energy collection component floats on the water surface, is connected to the water pump, collects and uses wave energy to drive the water pump to operate.

2. The floating photovoltaic self-cleaning device based on wave energy according to claim 1, characterized in that: The water pump is a turbine, which drives water to flow upward along the pipeline through the rotation of blades.

3. The floating photovoltaic self-cleaning device based on wave energy according to claim 2, characterized in that: The wave energy collection assembly comprises a floating ring, a float and a connecting rod mechanism; The floating ring is a hollow ring and floats horizontally on the water surface; The float is in the shape of a hollow cylinder and is vertically sleeved in the floating ring; One end of the connecting rod mechanism is connected to the outer wall of the floating ring, and the other end is connected to the turbine; The waves drive the floating ring and the float to generate relative vertical displacement, and convert the linear motion into rotational motion through the connecting rod mechanism, thereby driving the turbine to rotate.

4. The floating photovoltaic self-cleaning device based on wave energy according to claim 3, characterized in that: It also includes a mechanical energy storage mechanism, which is respectively connected to the wave energy collection component and the water pump and is used to store the mechanical energy converted from the wave energy.

5. The wave energy-based floating photovoltaic self-cleaning device according to claim 4, characterized in that: The mechanical energy storage mechanism is a spring, which converts mechanical energy into elastic potential energy for storage.

6. The wave energy-based floating photovoltaic self-cleaning device according to claim 1, characterized in that: The upper end of the pipeline is also connected with a rotating nozzle.

7. The wave energy based floating photovoltaic self-cleaning device according to claim 1, characterized in that: The photovoltaic support platform also includes a plurality of support rods. The buoy is placed horizontally and floats on the water surface. The deck is arranged horizontally, and the support rods are arranged vertically between the buoy and the deck.

8. The wave energy-based floating photovoltaic self-cleaning device according to claim 7, characterized in that: The deck is square, and each photovoltaic support platform includes four buoys, which are connected end to end to form a square area, and the area of ​​the square surrounded by the buoys is smaller than the area of ​​the deck; The support rods are respectively arranged between the four corners of the deck and the ends of the buoys, between the midpoints of the sides of the deck and the midpoints of the corresponding lower buoys, and between the midpoints of the buoys arranged oppositely.

9. The floating photovoltaic self-cleaning device based on wave energy according to claim 8, characterized in that: A set of wave energy collection components is provided at both ends of each buoy.

10. The floating photovoltaic self-cleaning device based on wave energy according to claim 1, characterized in that: The deck is composed of crisscross hollow trusses.

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