A circulating flushing device for solar photovoltaic panels

Abstract

The present invention specifically relates to a circulating flushing device for solar photovoltaic panels, comprising a flushing pipe arranged at the top of the solar photovoltaic panel, a sewage collection tank arranged at the bottom of the solar photovoltaic panel, a sedimentation tank, and a circulating pump. A drain pipe is provided between the flushing pipe and the sewage collection tank, and a normally open electrically controlled ball valve is provided on the drain pipe. A water supply pipe is provided between the circulating pump and the flushing pipe, and a return pipe is provided between the sewage collection tank and the sedimentation tank, and a normally closed electrically controlled ball valve is provided on the water supply pipe. The circulating pump draws treated water from the sedimentation tank to supply water to the flushing pipe, and the water discharged from the flushing pipe flushes the surface of the solar photovoltaic panel. The flushed sewage is collected in the sewage collection tank and flows into the sedimentation tank through the return pipe. The present invention can recycle sewage, play a role in water circulation, save water resources, and meet energy-saving requirements. In addition, the drain pipe is provided between the flushing pipe and the sewage collection tank, which is conducive to the discharge of residual water in the flushing pipe, avoiding the problem of pipe blockage or rupture caused by freezing in winter.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic panel cleaning, in particular to a circulation flushing device for solar photovoltaic panels. Background Art

[0002] A photovoltaic power station refers to a power generation system that uses solar energy and adopts special materials such as crystalline silicon panels, inverters and other electronic components. It is a photovoltaic power generation system that is connected to the power grid and transmits electricity to the power grid. Solar photovoltaic panels are assembled from multiple solar cells. They are the core part of the solar power generation system and the most important part of the solar power generation system.

[0003] In the prior art, in land-based photovoltaic power stations, a large amount of dust easily adheres to the surface of solar panels during long-term use, thereby blocking sunlight and reducing the efficiency of solar panels in converting light energy. In addition, when cleaning the solar panels, it is generally done manually, which is complicated. In addition, due to the large number of solar panels in photovoltaic power stations, the cleaning workload is large. In order to solve the trouble of manual cleaning, water flushing is tried. The existing water flushing is mostly to directly set a flushing pipe on the top of the photovoltaic panel, and supply water for flushing at regular intervals. Regardless of whether there is dust accumulated on the photovoltaic panel, it is cleaned regularly. In addition, the flushing water falls directly on the ground, resulting in a large amount of water resource waste. At the same time, in winter, the flushing pipe is prone to freezing due to residual water, causing pipe blockage and bringing trouble to cleaning. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the above-mentioned technology and provide a circulating flushing device for solar photovoltaic panels.

[0005] A circulating flushing device for a solar photovoltaic panel, comprising a flushing pipe arranged at the top of the solar photovoltaic panel, a sewage collection tank arranged at the bottom of the solar photovoltaic panel, a sedimentation tank, and a circulating pump, wherein the flushing pipe and the sewage collection tank are provided with a drain pipe, the water outlet of the circulating pump is provided with a water supply pipe, the water outlet of the water supply pipe is connected to the water inlet of the flushing pipe, a return pipe is provided between the water outlet of the sewage collection tank and the sedimentation tank, the drain pipe is provided with a normally open electrically controlled ball valve, and the water supply pipe is provided with a normally closed electrically controlled ball valve;

[0006] The circulating pump draws treated water from the sedimentation tank to supply water to the flushing pipe, and the water discharged from the flushing pipe flushes the surface of the solar photovoltaic panel. The flushed sewage is collected in the sewage collection tank and flows into the sedimentation tank through the return pipe.

[0007] Furthermore, the flushing pipe is provided with a plurality of water spray holes for spraying water.

[0008] Furthermore, the diameter of the water spray hole ranges from 0.6 to 0.8 mm.

[0009] Furthermore, the flushing pipe is made of PPR hot-melt pipe.

[0010] Furthermore, the sedimentation tank includes a box body, and three groups of sedimentation areas are provided in the box body.

[0011] Furthermore, it also includes a water replenishing device, and a liquid level meter is provided in the sedimentation tank, and the liquid level meter controls the water replenishing device to replenish water into the sedimentation tank.

[0012] Furthermore, a control system is configured, including a main control module, a time control module, a light sensing module, and a wireless communication module, wherein the time control module, the light sensing module, the wireless communication module, the liquid level gauge, the water replenishment device, the circulation pump, the normally open electric control ball valve, and the normally closed electric control ball valve are all electrically connected to the main control module;

[0013] The time control module uses a time controller to control the operation of the circulation pump, normally open electric control ball valve and normally closed electric control ball valve;

[0014] The light sensing module uses a light transmittance sensor, which is installed on the photovoltaic panel to sense the light transmittance of the photovoltaic panel and control the operation of the circulation pump;

[0015] The liquid level gauge adopts a three-point liquid level gauge. The highest point controls the water replenishment device to stop replenishing water, the middle point controls the water replenishment device to start replenishing water, and the lowest point controls the circulation pump to be forced to stop;

[0016] The wireless communication module is used to control the communication connection between the system and the outside.

[0017] Advantages of the present invention: The present invention has a reasonable structure, convenient layout, and good use effect. It not only solves the problem of manual cleaning, which is time-consuming and labor-intensive, but also can recycle sewage, play a water circulation role, save water resources, and meet energy-saving requirements. In addition, an emptying pipe is provided between the flushing pipe and the sewage collection tank, which is conducive to the discharge of residual water in the flushing pipe, avoiding the problem of blockage or rupture caused by frozen pipes in winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a circulating flushing device for solar photovoltaic panels of the present invention;

[0019] Figure 2 This is a system schematic diagram of a circulating flushing device for solar photovoltaic panels according to the present invention;

[0020] Figure 3 This is a control schematic diagram of a circulation pump of a circulation flushing device for a solar photovoltaic panel according to the present invention;

[0021] Figure 4 The present invention is a schematic diagram of the working state of a liquid level gauge of a circulating flushing device for a solar photovoltaic panel.

[0022] As shown in the figure: 1. Flushing pipe; 2. Sewage collection tank; 3. Sedimentation tank; 4. Circulation pump; 5. Water supply pipe; 6. Drain pipe; 7. Return pipe; 8. Normally open electric control ball valve; 9. Normally closed electric control ball valve; 10. Liquid level gauge; 11. Water replenishment device; 101. Water spray hole; 301. Box body; 302. Sedimentation area. DETAILED DESCRIPTION

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0025] In the description of the embodiments of the present invention, if a feature is referred to as being "set", "fixed", "connected" or "installed" on another feature, it may be directly set, fixed or connected on the other feature, or it may be indirectly set, fixed, connected or installed on the other feature.

[0026] In the description of the embodiments of the present invention, if the word "several" is mentioned, it means more than one; if the word "plurality" is mentioned, it means more than two; if the word "greater than," "less than," or "exceeds," it should be understood as excluding the number itself; if the word "above," "below," or "within" is mentioned, it should be understood as including the number itself. If the word "first" or "second" is mentioned, it should be understood as distinguishing technical features and should not be understood as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] The present invention will be described in further detail below with reference to the accompanying drawings.

[0028] like Figure 1As shown, a circulating flushing device for a solar photovoltaic panel comprises a flushing pipe 1 arranged at the top of the solar photovoltaic panel, a sewage collection tank 2 arranged at the bottom of the solar photovoltaic panel, a sedimentation tank 3 and a circulating pump 4. A drain pipe 6 is provided between the flushing pipe 1 and the sewage collection tank 2. A water supply pipe 5 is provided at the water outlet of the circulating pump 3. The water outlet of the water supply pipe 5 is connected to the water inlet of the flushing pipe 1. A return pipe 7 is provided between the water outlet of the sewage collection tank 2 and the sedimentation tank 3. A normally open electrically controlled ball valve 8 is provided on the drain pipe 6, and a normally closed electrically controlled ball valve 9 is provided on the water supply pipe 5.

[0029] The circulating pump 4 draws treated water after sedimentation from the sedimentation tank 3 to supply water to the flushing pipe 1. The water discharged from the flushing pipe 1 flushes the surface of the solar photovoltaic panel. The sewage after flushing is collected in the sewage collection tank 2 and flows into the sedimentation tank 3 through the return pipe 7.

[0030] The flushing pipe 1 is provided with a plurality of water spray holes 101 for spraying water.

[0031] The diameter of the water spray hole 101 is in the range of 0.6-0.8 mm. The small aperture of the water spray hole is conducive to pressure flushing and has a good cleaning effect.

[0032] The flushing pipe 1 is made of PPR hot-melt pipe.

[0033] The sedimentation tank 3 includes a box body 301 , and three sets of sedimentation areas 302 are provided in the box body 301 .

[0034] It also includes a water replenishing device 11. A liquid level meter 10 is provided in the sedimentation tank 3. The liquid level meter 10 controls the water replenishing device 11 to replenish water into the sedimentation tank 3.

[0035] like Figure 2-3 As shown, the present invention is equipped with a control system, including a main control module, a time control module, a light sensing module, and a wireless communication module. The time control module, the light sensing module, the wireless communication module, the liquid level gauge, the water replenishment device, the circulation pump, the normally open electric control ball valve, and the normally closed electric control ball valve are all electrically connected to the main control module;

[0036] The time control module uses a time controller, such as a timer, to customize the start time of the entire system and control the operation of the circulation pump, normally open electric control ball valve and normally closed electric control ball valve;

[0037] The light sensing module uses a light transmittance sensor, which is installed on the photovoltaic panel to sense the light transmittance of the photovoltaic panel and control the operation of the circulation pump;

[0038] The liquid level gauge adopts a three-point liquid level gauge. The highest point controls the water supply device to stop supplying water, the middle point controls the water supply device to start supplying water, and the lowest point controls the circulation pump to be forced to stop. The liquid level gauge can also adopt a two-point liquid level gauge. The highest point controls the water supply device to stop supplying water, and the lowest point controls the water supply device to start supplying water and stop the circulation pump.

[0039] The water replenishment device can use tap water, and an electric valve is set at the water outlet. The switch of the electric valve controls the start and stop of water replenishment;

[0040] The wireless communication module is used to connect the control system with external communication equipment, such as a mobile phone APP, so as to observe the operation of the entire system in real time.

[0041] The whole flushing process of the present invention is as follows:

[0042] When the time controller reaches the set time, it controls the normally open electric control ball valve 8 to close, the drain pipe 6 is in a closed state, the normally closed electric control ball valve 9 to open, the water supply pipe 5 is in a pass state, and the light transmittance sensor senses the light transmittance of the photovoltaic panel. When the light transmittance is lower than the set value, the circulation pump 4 starts to extract clean water from the sedimentation tank 3 and supply it to the flushing pipe 1. The flushing pipe 1 sprays water to the photovoltaic panel through the water spray hole 101 to form a spray flushing. The sewage after flushing flows into the sewage collection tank 2 and flows back to the sedimentation tank 3 through the return pipe 7. The flushing water obtained by the multi-stage sedimentation in the sedimentation tank can be used again, thereby realizing the recycling of water;

[0043] During flushing, water loss is inevitable. Therefore, in order to ensure the effectiveness of the flushing work, a three-point liquid level gauge is set in the sedimentation tank 3 to control whether to add water and the forced shutdown of the circulation pump. The middle point controls the water replenishment device, that is, the electric valve on the tap water pipe is opened to start water replenishment, the highest point controls the water replenishment device to stop water replenishment, that is, the electric valve on the tap water pipe is closed to stop water replenishment, and the lowest point controls the forced shutdown of the circulation pump;

[0044] In addition, the sediment in the sedimentation tank can be cleaned regularly.

[0045] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A circulating flushing device for solar photovoltaic panels, characterized by: The invention comprises a flushing pipe (1) arranged at the top of a solar photovoltaic panel, a sewage collecting tank (2) arranged at the bottom of the solar photovoltaic panel, a sedimentation tank (3) and a circulation pump (4); an emptying pipe (6) is provided between the flushing pipe (1) and the sewage collecting tank (2); a water supply pipe (5) is provided at the water outlet of the circulation pump (3); the water outlet of the water supply pipe (5) is connected to the water inlet of the flushing pipe (1); a return pipe (7) is provided between the water outlet of the sewage collecting tank (2) and the sedimentation tank (3); a normally open electric control ball valve (8) is provided on the emptying pipe (6); and a normally closed electric control ball valve (9) is provided on the water supply pipe (5); The circulating pump (4) draws treated water after sedimentation from the sedimentation tank (3) and supplies water to the flushing pipe (1). The water discharged from the flushing pipe (1) flushes the surface of the solar photovoltaic panel. The sewage after flushing is collected in the sewage collection tank (2) and flows into the sedimentation tank (3) through the return pipe (7).

2. A circulating flushing device for solar photovoltaic panels according to claim 1, characterized in that: The flushing pipe (1) is provided with a plurality of water spray holes (101) for spraying water.

3. A circulating flushing device for solar photovoltaic panels according to claim 2, characterized in that: The diameter of the water spray hole (101) is in the range of 0.6-0.8 mm.

4. A circulating flushing device for solar photovoltaic panels according to claim 1, characterized in that: The flushing pipe (1) is made of a PPR hot-melt pipe.

5. A circulating flushing device for solar photovoltaic panels according to claim 1, characterized in that: The sedimentation tank (3) comprises a box (301), and three groups of sedimentation areas (302) are arranged in the box (301).

6. A circulating flushing device for solar photovoltaic panels according to claim 1, characterized in that: It also includes a water replenishing device (11), a liquid level meter (10) is provided in the sedimentation tank (3), and the liquid level meter (10) controls the water replenishing device (11) to replenish water into the sedimentation tank (3).

7. A circulating flushing device for solar photovoltaic panels according to claim 6, characterized in that: A control system is configured, including a main control module, a time control module, a light sensing module, and a wireless communication module. The time control module, the light sensing module, the wireless communication module, the liquid level gauge, the water replenishment device, the circulation pump, the normally open electric control ball valve, and the normally closed electric control ball valve are all electrically connected to the main control module; The time control module uses a time controller to control the operation of the circulation pump, normally open electric control ball valve and normally closed electric control ball valve; The light sensing module uses a light transmittance sensor, which is installed on the photovoltaic panel to sense the light transmittance of the photovoltaic panel and control the operation of the circulation pump; The liquid level gauge adopts a three-point liquid level gauge. The highest point controls the water replenishment device to stop replenishing water, the middle point controls the water replenishment device to start replenishing water, and the lowest point controls the circulation pump to be forced to stop; The wireless communication module is used to control the communication connection between the system and the outside.

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