A spraying mechanism and photovoltaic device

Abstract

This utility model discloses a spraying mechanism and a photovoltaic device. The spraying mechanism includes: a pipeline assembly, including a water supply pipe and a reversing valve, the reversing valve having an inlet, a first outlet, and a second outlet; the inlet is connected to one end of the water supply pipe, the first outlet is connected to a first pipeline, and the second outlet is connected to a second pipeline; a spraying assembly, including multiple spraying units, each spraying unit including multiple nozzles spaced laterally; some spraying units are first units, and some are second units, with the first and second units alternating from front to back; all nozzles of the first units are connected to the first pipeline, and all nozzles of the second units are connected to the second pipeline. The photovoltaic device includes a photovoltaic module and the aforementioned spraying mechanism. The spraying mechanism can spray the photovoltaic panel from different directions without reducing the water pressure of the nozzles, resulting in a good rinsing effect.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, and in particular to a spraying mechanism and a photovoltaic device. Background Technology

[0002] In the application of rooftop photovoltaic (PV) power generation systems, an increasing number of PV devices are equipped with spray systems to wash away dust and prevent dust from obstructing power generation efficiency. Existing spray systems typically consist of a set of fixed-position nozzles that can spray all PV panels comprehensively; however, such spray systems still have some shortcomings, such as a fixed spray direction and poor rinsing effect. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a spraying mechanism and a photovoltaic device.

[0004] The spraying mechanism according to a first aspect embodiment of the present invention includes: The pipeline assembly includes a water supply pipe and a reversing valve. The reversing valve has an inlet, a first outlet, and a second outlet. The inlet is connected to one end of the water supply pipe, the first outlet is connected to a first pipeline, and the second outlet is connected to a second pipeline. A spray assembly includes multiple spray units, each spray unit including multiple nozzles spaced laterally; some of the spray units are first units, and some of the spray units are second units, with the first units and second units alternately arranged from front to back; all nozzles of the first units are connected to the first pipeline, and all nozzles of the second units are connected to the second pipeline.

[0005] The spray mechanism according to the embodiments of this utility model has at least the following technical effects: During installation, the photovoltaic panel can be placed between two adjacent spray units; during use, the reversing valve is first switched to supply water to the first outlet so that all the nozzles of the first unit spray water onto the photovoltaic module, and then the reversing valve is switched to supply water to the second outlet so that all the nozzles of the second unit spray water onto the photovoltaic module, and the two are performed alternately; the spray mechanism can spray the photovoltaic panel from different directions without reducing the spray pressure of the nozzles, and the rinsing effect is good.

[0006] According to some embodiments of this utility model, both the first pipeline and the second pipeline are referred to as water distribution pipelines, and each nozzle is connected to a vertical pipe at its bottom, with the bottom end of the vertical pipe connected to the water distribution pipeline.

[0007] According to some embodiments of this utility model, the bottom end of the vertical pipe is connected to the water distribution pipe through a detachable structure.

[0008] According to some embodiments of the present invention, the detachable structure includes a first connecting ring disposed on the water distribution pipe and a second connecting ring disposed on the detachable structure, wherein the first connecting ring and the second connecting ring are threadedly connected.

[0009] According to some embodiments of the present invention, the first connecting ring is provided with an inner convex edge, a plug, and a top rod penetrating the inner convex edge. An elastic element is connected between the plug and the first connecting ring. The second connecting ring is provided with a top block. The lower end of the top rod is connected to the plug, and the upper end of the top rod abuts against the top block. When the first connecting ring and the second connecting ring are separated, the plug seals against the inner convex edge from bottom to top.

[0010] According to some embodiments of this utility model, the number of spray units is even.

[0011] According to some embodiments of this utility model, the water supply pipe is equipped with a water pump.

[0012] According to some embodiments of this utility model, the reversing valve is an electromagnetic reversing valve.

[0013] According to a second aspect of the present invention, a photovoltaic device includes a photovoltaic module and the above-mentioned spraying mechanism. The photovoltaic module includes a plurality of photovoltaic units, and each photovoltaic unit includes a plurality of photovoltaic panels arranged sequentially in a horizontal direction. The photovoltaic units are provided between two adjacent spraying units.

[0014] The photovoltaic device according to the second aspect of the present invention has at least the following technical effects: by setting the above-mentioned spraying mechanism, the spraying mechanism can spray the photovoltaic panel from different directions without reducing the water pressure of the nozzle, and the rinsing effect is better.

[0015] According to some embodiments of the present invention, the photovoltaic panel is provided with a support at its bottom.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the photovoltaic device according to an embodiment of the present invention; Figure 2 This is a cross-sectional schematic diagram of the detachable structure in one embodiment of the present invention; In the attached image: 100-Water supply pipe; 110-Water pump; 120-Reversing valve; 130-First pipeline; 131-First unit; 140-Second pipeline; 141-Second unit; 150-Sprinkler head; 151-Vertical pipe; 200-Photovoltaic panel; 310-First connecting ring; 311-Orifice plate; 312-Elastic element; 313-Block; 314-Top rod; 315-Inner convex edge; 320-Second connecting ring; 321-Top block. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate 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 utility model. Furthermore, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number, while "above," "below," "within," etc., are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0020] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0021] The following is for reference. Figure 1 and Figure 2 This invention describes a spraying mechanism and a photovoltaic device according to embodiments of the present invention.

[0022] The spraying mechanism of the first aspect of this utility model includes a pipeline assembly and a spraying assembly.

[0023] The pipeline assembly includes a water supply pipe 100 and a reversing valve 120. The reversing valve 120 has an inlet, a first outlet, and a second outlet. The reversing valve 120 is a two-position three-way reversing valve 120. The reversing valve 120 has a first conducting state and a second conducting state. In the first conducting state, the inlet is connected to the first outlet, and in the second conducting state, the inlet is connected to the second outlet.

[0024] The inlet is connected to one end of the water supply pipe 100, and the other end of the water supply pipe 100 is connected to a water storage tank, municipal tap water or other water source. The first outlet is connected to the first pipeline 130, so that in the first conductive state, the first pipeline 130 receives all the water supply from the water supply pipe 100. The second outlet is connected to the second pipeline 140, so that in the second conductive state, the second pipeline 140 receives all the water supply from the water supply pipe 100.

[0025] The spray assembly includes multiple spray units, each spray unit including multiple nozzles 150 spaced laterally. The nozzles 150 may be rotating nozzles 150 to spray the surrounding area. Some spray units are first units 131, and some spray units are second units 141. The first units 131 and the second units 141 are alternately arranged from front to back. All nozzles 150 of the first units 131 are connected to a first pipe 130, so that the first pipe 130 can supply water to all nozzles 150 of all first units 131. All nozzles 150 of the second units 141 are connected to a second pipe 140, so that the second pipe 140 can supply water to all nozzles 150 of all second units 141.

[0026] The area between two adjacent spray units is called the photovoltaic area, and the spray range of each nozzle 150 covers the photovoltaic areas on both sides of it; for two adjacent first units 131, the spray range of the nozzles 150 contained therein can cover the entire area between the two first units 131; for two adjacent second units 141, the spray range of the nozzles 150 contained therein can cover the entire area between the second units 141, that is, water can be supplied to all first units 131 or water can be supplied to all second units 141 to make the spray cover the entire photovoltaic module.

[0027] Understandably, in the relevant spraying mechanism, because the nozzles 150 are fixed in position, the photovoltaic panel 200 receives spray from the same direction. This can easily lead to a "wake zone" or "dead corner" downstream of protrusions such as the frame, support, or junction box on the photovoltaic panel 200, where the water flow cannot reach. Dirt in this area cannot be washed away. Furthermore, the impact and shear forces of the sprayed water on contaminants adhering to the photovoltaic panel 200 are also unidirectional, hindering contaminant removal. Adding more nozzles 150 to achieve multi-directional spraying would reduce the water pressure of each nozzle 150, further hindering contaminant removal.

[0028] Reference Figure 1When installing this utility model, the photovoltaic panel 200 can be placed between two adjacent spray units. When in use, first switch the reversing valve 120 to supply water to the first outlet so that all the nozzles 150 of the first unit 131 spray water onto the photovoltaic module. Then switch the reversing valve 120 to supply water to the second outlet so that all the nozzles 150 of the second unit 141 spray water onto the photovoltaic module. The two processes are carried out alternately.

[0029] This spraying mechanism can spray the photovoltaic panel 200 from different directions. By changing the rinsing angle, the "downstream" and "dead corners" of the previous rinse become the "upstream" in this rinse, directly exposed to the impact of the water flow. The dirt that was previously blocked by the frame is exposed and directly washed away after changing the direction, which ensures that there are no dead corners in the cleaning. Moreover, without reducing the water pressure of the nozzle 150, the multi-directional impact and shearing force applied to the pollutants from different angles is conducive to the removal of pollutants, resulting in a better rinsing effect.

[0030] In some embodiments of this utility model, the first pipe 130 and the second pipe 140 are both referred to as water distribution pipes. Each nozzle 150 has a vertical pipe 151 connected to its bottom. The bottom end of the vertical pipe 151 is connected to the water distribution pipe, and the top end of the vertical pipe 151 is connected to the nozzle 150. When a photovoltaic panel 200 and a support are installed, the vertical pipe 151 extends vertically across the photovoltaic panel 200 and the support, allowing the nozzles 150 to be positioned above the photovoltaic panel 200 for spraying. Furthermore, the water distribution pipe can be placed on the ground, resulting in a stable structure that is not easily loosened, facilitating installation and maintenance.

[0031] In some embodiments of this utility model, the bottom end of the vertical pipe 151 is connected to the water distribution pipe via a detachable structure. It is understood that in the sprinkler system, the nozzle 150 is a vulnerable component. Since the photovoltaic panel 200 is supported by a bracket and located far from the ground, replacing or repairing the nozzle 150 requires workers to climb a ladder for disassembly and assembly. Workers also need to carry the ladder during inspections, which is inconvenient. This embodiment, by providing a detachable structure, allows the vertical pipe 151 to be removed from the water distribution pipe when the nozzle 150 needs replacement or repair. The removed vertical pipe 151 and nozzle 150 can then be taken back to the maintenance room for replacement or repair. This eliminates the need for workers to carry a ladder during inspections, reducing manpower consumption.

[0032] Of course, if the plastic vertical pipe 151 is too high and unstable, it can be replaced with a metal vertical pipe 151, or the vertical pipe 151 can be attached to the bracket with a rope or other easy-to-disassemble object in a place where the staff can stand and reach it, so as to maintain the stability of the vertical pipe 151 without affecting the disassembly and assembly of the vertical pipe 151 and the water distribution pipe.

[0033] In some embodiments of this utility model, the detachable structure includes a first connecting ring 310 disposed in the water distribution pipe and a second connecting ring 320 disposed in the detachable structure, wherein the first connecting ring 310 and the second connecting ring 320 are threadedly connected. This structure is simple, the connection is stable, and disassembly and assembly are convenient; the interior of the first connecting ring 310 and the second connecting ring 320 is used for water flow.

[0034] In some embodiments of this utility model, reference is made to Figure 2 The first connecting ring 310 is provided with an inner protruding edge 315, a plug 313, and a push rod 314 penetrating the inner protruding edge 315. The diameter of the plug 313 is smaller than the inner diameter of the first connecting ring 310 but larger than the inner diameter of the inner protruding edge 315, allowing water to flow between the plug 313 and the inner wall of the first connecting ring 310. The diameter of the push rod 314 is smaller than the inner diameter of the inner protruding edge 315, allowing water to flow between the push rod 314 and the inner protruding edge 315. The plug 313 and the first connecting ring 310 are connected by an inner protruding edge 315. An elastic element 312 connects the connecting rings 310, causing the blocking block 313 to tend to move upward. The second connecting ring 320 is provided with a top block 321, which can be a plate with holes, allowing water to pass through. The lower end of the top rod 314 is connected to the blocking block 313, and the upper end of the top rod 314 abuts against the top block 321. When the first connecting ring 310 and the second connecting ring 320 are separated, the blocking block 313 seals against the inner convex edge 315 from bottom to top. In this way, after the vertical rod is removed from the water distribution pipe, the blocking block 313 automatically seals the first connecting ring 310, and the staff does not need to do any additional work to seal the first connecting ring 310. After the vertical rod is installed back into the water distribution pipe, the top block 321 presses down the blocking block 313 through the top rod 314, realizing the connection between the vertical rod and the water distribution pipe, reducing the burden on the staff.

[0035] In some embodiments of this utility model, a perforated plate 311 is provided inside the first connecting ring 310. The perforated plate 311 is located below the block 313. The elastic element 312 is a spring, with the top end of the spring connected to the block 313 and the bottom end of the spring connected to the perforated plate 311.

[0036] In some embodiments of this utility model, the number of spray units is even. In this way, the number of first units 131 and the number of second units 141 are the same, with a first unit 131 on the front side of each photovoltaic panel 200 and a second unit 141 on the rear side of each photovoltaic panel 200, so that the spray rinsing of the photovoltaic module is more uniform.

[0037] In some embodiments of this invention, the water supply pipe 100 is equipped with a water pump 110. This provides sufficient pressure for the spraying.

[0038] In some embodiments of this invention, the reversing valve 120 is an electromagnetic reversing valve 120. This facilitates the automatic control of switching between the first conducting state and the second conducting state.

[0039] The photovoltaic device according to a second aspect of this utility model includes a photovoltaic module and the aforementioned spraying mechanism. The photovoltaic module includes multiple photovoltaic units, and each photovoltaic unit includes multiple photovoltaic panels 200 arranged sequentially in a transverse direction. A photovoltaic unit is disposed between each adjacent spraying unit. The multiple photovoltaic units are arranged one-to-one in multiple photovoltaic areas. By setting the aforementioned spraying mechanism, the spraying mechanism can spray the photovoltaic panels 200 from different directions without reducing the water pressure of the nozzles 150, resulting in a better rinsing effect.

[0040] In some embodiments of this utility model, a support is provided at the bottom of the photovoltaic panel 200. This supports the photovoltaic panel 200 at a certain distance from the ground, which facilitates the laying of pipes and cables under the photovoltaic panel 200, and also provides sufficient space for workers to walk and inspect under the photovoltaic panel 200.

[0041] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A spraying mechanism characterized by, include: The pipeline assembly includes a water supply pipe and a reversing valve. The reversing valve has an inlet, a first outlet, and a second outlet. The inlet is connected to one end of the water supply pipe, the first outlet is connected to a first pipeline, and the second outlet is connected to a second pipeline. A spray assembly includes multiple spray units, each spray unit including multiple nozzles spaced laterally; some of the spray units are first units, and some of the spray units are second units, with the first units and second units alternately arranged from front to back; all nozzles of the first units are connected to the first pipeline, and all nozzles of the second units are connected to the second pipeline.

2. The shower mechanism of claim 1, wherein: Both the first pipeline and the second pipeline are referred to as water distribution pipelines. Each nozzle is connected to a vertical pipe at its bottom, and the bottom end of the vertical pipe is connected to the water distribution pipeline.

3. The shower mechanism of claim 2, wherein: The bottom end of the vertical pipe is connected to the water distribution pipe through a detachable structure.

4. The shower mechanism of claim 3, wherein: The detachable structure includes a first connecting ring disposed on the water distribution pipe and a second connecting ring disposed on the detachable structure, wherein the first connecting ring and the second connecting ring are threadedly connected.

5. The shower mechanism of claim 4, wherein: The first connecting ring has an inner convex edge, a plug, and a top rod that passes through the inner convex edge. An elastic element is connected between the plug and the first connecting ring. The second connecting ring has a top block. The lower end of the top rod is connected to the plug, and the upper end of the top rod abuts against the top block. When the first connecting ring and the second connecting ring are separated, the plug seals against the inner convex edge from bottom to top.

6. The shower mechanism of claim 1, wherein: The number of spray units is even.

7. The spraying mechanism according to claim 1, characterized in that: The water supply pipe is equipped with a water pump.

8. The shower mechanism of claim 1, wherein: The reversing valve is an electromagnetic reversing valve.

9. A photovoltaic device, comprising a photovoltaic module and a spraying mechanism as described in any one of claims 1 to 8, wherein the photovoltaic module comprises a plurality of photovoltaic units, each photovoltaic unit comprising a plurality of photovoltaic panels arranged sequentially in a transverse direction, and the photovoltaic units are provided between two adjacent spraying units.

10. The photovoltaic device of claim 9, wherein: The photovoltaic panel is equipped with a support at its bottom.

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