Photovoltaic panel cleaning system

Abstract

The utility model belongs to the technical field of photovoltaic cleaning, and particularly relates to a photovoltaic panel cleaning system which comprises a photovoltaic panel, a water vapor spray washing pipe and a three-way reversing electromagnetic valve. The photovoltaic panel is obliquely arranged; the water vapor spray washing pipe is arranged on the inclined upper side of the photovoltaic panel, a spray washing opening is formed in the pipe wall of the water vapor spray washing pipe, and the spray washing opening obliquely faces the upper surface of the photovoltaic panel; the water vapor spray washing pipe is connected with an outlet of the three-way reversing electromagnetic valve, and two inlets of the three-way reversing electromagnetic valve are communicated with a water source and an air source respectively, so that water and air are sprayed from the spray washing opening respectively to wash the upper surface of the photovoltaic panel. According to the scheme, the water vapor spray washing pipe washes accumulated snow, dust and other substances on the surface of the photovoltaic panel through air injection or an air injection mode, the cost is low, and the water vapor spray washing pipe is suitable for application and daily cleaning of large-scale and ultra-large-scale photovoltaic power stations; and in addition, the photovoltaic panel can be cleaned in time in batches, the cleaning and maintaining efficiency is improved, and the effective duration of power generation of the photovoltaic panel is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic cleaning, and in particular relates to a photovoltaic panel cleaning system. Background Art

[0002] At present, the automatic cleaning method of photovoltaic panels mainly relies on program-controlled cleaning brushes to move back and forth to achieve automatic cleaning. This cleaning method is costly, complex in structure, and has high maintenance costs, making it difficult to apply in large photovoltaic power stations. In addition, although intelligent cleaning robot technology has also been developed on the market, the uneven installation of different photovoltaic panels and the gaps at the frame of the photovoltaic modules are likely to get stuck on the robot, making it unable to return to its original position; in large-scale photovoltaic power stations, it is usually difficult for operation and maintenance personnel to find the location of the faulty robot, and its cleaning efficiency and operation and maintenance costs are still restricted.

[0003] Therefore, it is necessary to design a photovoltaic panel cleaning system which is low-cost and suitable for daily cleaning. Utility Model Content

[0004] In order to solve the above problems existing in the prior art, the present invention provides a photovoltaic panel cleaning system.

[0005] The technical solution adopted by the utility model is:

[0006] A photovoltaic panel cleaning system comprises a photovoltaic panel, a water-gas spraying pipe and a three-way reversing solenoid valve; the photovoltaic panel is arranged at an angle; the water-gas spraying pipe is arranged at the oblique upper side of the photovoltaic panel, and a spraying port is arranged on the pipe wall of the water-gas spraying pipe, and the spraying port is inclined toward the upper surface of the photovoltaic panel; the water-gas spraying pipe is connected to the outlet of the three-way reversing solenoid valve, and the two inlets of the three-way reversing solenoid valve are respectively connected to a water source and an air source, so that the spraying port sprays water and air respectively to flush the upper surface of the photovoltaic panel.

[0007] As an alternative or supplement to the above-mentioned photovoltaic panel cleaning system: the air source includes an air filter and an air compressor; the air filter is connected to the air intake of the air compressor through a pipeline, and the air compressor inhales air from the atmospheric environment through the air filter; the air outlet of the air compressor is connected to an inlet of a three-way reversing solenoid valve.

[0008] As an alternative or supplement to the above photovoltaic panel cleaning system: the water source includes a water tank and a water pump, and the water outlet at the bottom of the water tank is connected to another inlet of the three-way reversing solenoid valve through the water pump.

[0009] As an alternative or supplement to the above photovoltaic panel cleaning system: the water tank is connected to a tap water system.

[0010] As an alternative or supplement to the above photovoltaic panel cleaning system: the spray opening is circular, oval, elongated or flat.

[0011] As an alternative or supplement to the above-mentioned photovoltaic panel cleaning system: when the three-way reversing solenoid valve is replaced by two solenoid valves, the two solenoid valves are respectively a water circuit solenoid valve and a gas circuit solenoid valve, the inlets of the water circuit solenoid valve and the gas circuit solenoid valve are respectively connected to the water source and the air source, and the outlets of the water circuit solenoid valve and the gas circuit solenoid valve are connected in parallel and connected to the water and gas spray pipe.

[0012] As an alternative or supplement to the above-mentioned photovoltaic panel cleaning system: a number of photovoltaic panels are distributed in a rectangular array, and the same water-gas spraying pipe is set diagonally above the same row of photovoltaic panels. Each water-gas spraying pipe is connected to the main air pipe and the main water pipe through a three-way reversing solenoid valve.

[0013] As an alternative or supplement to the above photovoltaic panel cleaning system: the angle between the spray direction of the spray nozzle and the upper surface of the photovoltaic panel is 5-10°.

[0014] The beneficial effects of the utility model are:

[0015] 1. This solution can flush snow, dust and other substances on the surface of photovoltaic panels by setting up water-gas spray cleaning pipes to spray air and tap water. Since only the water-gas spray cleaning pipes need to be opened and installed, the cost of the entire photovoltaic panel cleaning system is low, which is more suitable for the installation and application of large and super-large photovoltaic power stations, and is also suitable for daily surface cleaning of photovoltaic panels;

[0016] 2. In addition, the photovoltaic panel cleaning system in this solution can clean batches of photovoltaic panels in a timely and batch manner, thereby improving the cleaning and maintenance efficiency and increasing the effective duration of photovoltaic panel power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below.

[0018] Figure 1 It is a structural schematic diagram of the photovoltaic panel cleaning system in this scheme;

[0019] Figure 2 This is a front view of the cooperation structure between the photovoltaic panel and the water vapor spray cleaning pipe;

[0020] Figure 3 It is a diagram of the arrangement status of several photovoltaic panels;

[0021] Figure 4 It is a structural schematic diagram of another photovoltaic panel cleaning system.

[0022] In the figure: 1-air filter; 2-air compressor; 3-water tank; 4-water pump; 5-three-way reversing solenoid valve; 6-water and gas spray pipe; 61-spray port; 7-photovoltaic panel; 8-main gas line pipe; 9-water solenoid valve; 10-gas solenoid valve. DETAILED DESCRIPTION

[0023] The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only a part of the embodiments, not all of them. Based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of this solution.

[0024] Example 1

[0025] like Figures 1 to 3 As shown, this embodiment designs a photovoltaic panel 7 cleaning system, including photovoltaic panels 7, water vapor spray cleaning pipes 6 and three-way reversing solenoid valves 5 and other components.

[0026] The photovoltaic panels 7 are arranged tilted, and the tilt angle between the photovoltaic panels 7 and the horizontal plane is generally 15-30°. A plurality of photovoltaic panels 7 are distributed in a rectangular array.

[0027] The water vapor spray pipe 6 is arranged on the oblique upper side of the photovoltaic panel 7, and the same water vapor spray pipe 6 is arranged obliquely above the same row of photovoltaic panels 7. A spray port 61 is arranged on the pipe wall of the water vapor spray pipe 6. The spray port 61 is inclined toward the upper surface of the photovoltaic panel 7, and the spray direction of the spray port 61 forms an angle of 5-10° with the upper surface of the photovoltaic panel 7.

[0028] The water-gas spraying pipe 6 is connected to the outlet of the three-way reversing solenoid valve 5 , and the two inlets of the three-way reversing solenoid valve 5 are connected to the water source and the air source respectively.

[0029] The air source includes an air filter 1 and an air compressor 2; the air filter 1 is connected to the air intake port of the air compressor 2 through a pipeline, and the air compressor 2 inhales air from the atmospheric environment through the air filter 1; the air outlet of the air compressor 2 is connected to an inlet of a three-way reversing solenoid valve 5.

[0030] The water source includes a water tank 3 and a water pump 4. The water outlet at the bottom of the water tank 3 is connected to another inlet of the three-way reversing solenoid valve 5 through the water pump 4. The water tank 3 is connected to the tap water system to facilitate water replenishment to the water tank 3. The water tank 3 can also be replenished by pumping groundwater.

[0031] The spray port 61 is circular, oval, elongated or flat. The shape of the spray port 61 can be determined as required, and the water flow or air flow sprayed from the spray port 61 is fan-shaped as much as possible to increase the width of the water flow or air flow.

[0032] In addition, if Figure 4 As shown, the three-way reversing solenoid valve 5 can also be replaced by two solenoid valves, which are a water circuit solenoid valve 9 and a gas circuit solenoid valve 10. The inlets of the water circuit solenoid valve 9 and the gas circuit solenoid valve 10 are connected to the water source and the air source respectively, and the outlets of the water circuit solenoid valve 9 and the gas circuit solenoid valve 10 are connected in parallel and connected to the water gas spray pipe 6.

[0033] A three-way reversing solenoid valve 5 is arranged on the water-gas spray pipe 6 at each row of photovoltaic panels 7. Each water-gas spray pipe 6 is connected to the main air pipe 8 and the main water pipe through the three-way reversing solenoid valve 5. The main air pipe 8 and the main water pipe are used for transporting air and water respectively.

[0034] When the three-way reversing solenoid valve 5 is switched, the spray port 61 can spray water and air respectively to flush the upper surface of the photovoltaic panel 7 .

[0035] When dust accumulates on the surface of the photovoltaic panel 7: the three-way reversing solenoid valve 5 is controlled to perform a reversing action, so that the water channel in the three-way reversing solenoid valve 5 is opened and the gas channel is closed, and the water pump 4 extracts water from the water tank 3 and pressurizes it. The pressurized water passes through the main water pipe, the three-way reversing solenoid valve 5, and the water and gas spraying pipe 6 in sequence, and then sprays out from the spraying port 61 and flushes the surface of the photovoltaic panel 7. After flushing for a certain period of time, the three-way reversing solenoid valve 5 is controlled to perform a reversing action again, so that the water channel in the three-way reversing solenoid valve 5 is closed and the gas channel is opened, and the air compressor is started, so that the air in the atmospheric environment passes through the air filter 1, the air compressor, the main gas pipe 8, the three-way reversing solenoid valve 5, and the water and gas spraying pipe 6 in sequence, and then sprays out from the spraying port 61 and blows the moisture on the surface of the photovoltaic panel 7. After the drying time is set, the air compressor is turned off.

[0036] When snow accumulates on the surface of the photovoltaic panel 7: the three-way reversing solenoid valve 5 is controlled to perform a reversing action, so that the water channel in the three-way reversing solenoid valve 5 is closed and the air channel is opened, and the air compressor is started, so that the air in the atmospheric environment passes through the air filter 1, the air compressor, the main air circuit pipe 8, the three-way reversing solenoid valve 5, and the water vapor spray pipe 6 in sequence, and then is sprayed out from the spray port 61 to form an air knife, and the snow on the surface of the photovoltaic panel 7 is blown away by the air knife. After the set time is reached, the air compressor is turned off.

[0037] The above embodiments are merely examples for the purpose of clarifying the description, and are not intended to limit the implementation methods; it is not necessary and impossible to list all implementation methods exhaustively. However, obvious changes or modifications derived therefrom are still within the scope of protection of the present technology.

Claims

1. A photovoltaic panel cleaning system, characterized in that: The invention comprises a photovoltaic panel (7), a water-gas spraying pipe (6) and a three-way reversing electromagnetic valve (5); the photovoltaic panel (7) is arranged at an angle; the water-gas spraying pipe (6) is arranged at the upper oblique side of the photovoltaic panel (7); a spraying port (61) is arranged on the pipe wall of the water-gas spraying pipe (6); the spraying port (61) is inclined toward the upper surface of the photovoltaic panel (7); the water-gas spraying pipe (6) is connected to the outlet of the three-way reversing electromagnetic valve (5); the two inlets of the three-way reversing electromagnetic valve (5) are respectively connected to a water source and an air source, so that the spraying port (61) sprays water and air respectively to flush the upper surface of the photovoltaic panel (7).

2. The photovoltaic panel cleaning system according to claim 1, characterized in that: The air source comprises an air filter (1) and an air compressor (2); the air filter (1) is connected to an air intake port of the air compressor (2) via a pipeline, and the air compressor (2) inhales air from the atmospheric environment through the air filter (1); The air outlet of the air compressor (2) is connected to an inlet of a three-way reversing solenoid valve (5).

3. The photovoltaic panel cleaning system according to claim 2, characterized in that: The water source comprises a water tank (3) and a water pump (4), and a water outlet at the bottom of the water tank (3) is connected to another inlet of a three-way reversing solenoid valve (5) through the water pump (4).

4. The photovoltaic panel cleaning system according to claim 3, characterized in that: The water tank (3) is connected to the tap water system.

5. The photovoltaic panel cleaning system according to any one of claims 1 to 4, characterized in that: The spray opening (61) is circular, oval, long strip or flat.

6. The photovoltaic panel cleaning system according to claim 1, characterized in that: When the three-way reversing solenoid valve (5) is replaced by two solenoid valves, the two solenoid valves are respectively a water circuit solenoid valve (9) and a gas circuit solenoid valve (10); the inlets of the water circuit solenoid valve (9) and the gas circuit solenoid valve (10) are respectively connected to a water source and an air source; and the outlets of the water circuit solenoid valve (9) and the gas circuit solenoid valve (10) are connected in parallel and are connected to the water-gas spray cleaning pipe (6).

7. The photovoltaic panel cleaning system according to claim 1, characterized in that: A plurality of photovoltaic panels (7) are distributed in a rectangular array, and a water vapor spraying pipe (6) is arranged obliquely above the photovoltaic panels (7) in the same row. Each water vapor spraying pipe (6) is connected to a main air pipe (8) and a main water pipe via a three-way reversing solenoid valve (5).

8. The photovoltaic panel cleaning system according to claim 1, characterized in that: The angle between the spray direction of the spray port (61) and the upper surface of the photovoltaic panel (7) is 5-10°.

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