Water tank type full-automatic photovoltaic module in-orbit water cleaning device

Abstract

The water tank type full-automatic photovoltaic module on-orbit water cleaning device comprises a cleaning machine body, a water tank, a distributed automatic water inlet assembly and a PLC, an electric rolling brush and a water spraying pipe are arranged below a cleaning frame of the cleaning machine body, a micro water pump and the water tank are arranged above the cleaning frame, and inductive switches are arranged on the upper water level and the lower water level of the water tank; the photovoltaic panel and the water supply pipeline are provided with distributed automatic water inlet assemblies along the way, each distributed automatic water inlet assembly is composed of a water taking signal pin, a water taking positioning baffle, a water inlet electromagnetic valve, a water inlet electromagnetic valve coil contact and a water tank water inlet spray head, and the cleaning frame is provided with a water taking, parking and terminal point return induction switch, a water taking positioning electric push rod and a 24V power supply contact. The start position of the device is provided with a return parking static contact and a charging pile, and the end position is provided with an end point return static contact. The cleaning mode combining the water tank and the rolling brush has the advantages of being simple in structure, extremely small in water consumption and free of human intervention, it is ensured that the photovoltaic panel is clean every day, and the generating capacity is improved.

Description

Technical Field

[0001] The invention relates to the technical field of solar photovoltaic technology, and in particular to a water tank type fully automatic on-track water cleaning device for photovoltaic components. Background Art

[0002] In recent years, the scale of photovoltaic power station construction has developed rapidly. Photovoltaic power generation relies on sunlight, and the efficiency of power generation depends to a large extent on the cleanliness of the photovoltaic panels.

[0003] There are generally two ways to clean photovoltaic panels, namely dry cleaning and wet cleaning. Dry cleaning mainly includes manual dry cleaning and fully automatic cleaning robot dry cleaning; wet cleaning mainly includes manual wet cleaning, human-controlled and off-track water cleaning robots with soft water pipes.

[0004] However, the operation requires water, and manual high-altitude operations are unsafe, with serious waste of water resources and a large amount of labor.

[0005] The known disclosed CN202310331169.4 is a photovoltaic panel electric cleaning machine, in which a nozzle 20 is arranged on a bracket 2, the nozzle is connected to a water pipe 21, and the water pipe is connected to a water pump. During the cleaning process, a water source needs to be connected, and the water supply is unstable, so it is impossible to achieve all-weather, on-track, and fully automatic cleaning at any time.

[0006] Therefore, a water tank type fully automatic photovoltaic module on-track water cleaning device is needed. Summary of the invention

[0007] In order to solve the problem of cleaning photovoltaic panels in a short time, the present invention provides a water tank type fully automatic photovoltaic module on-track water cleaning device, which can perform all-weather, on-track integrated, micro-water, and fully automatic cleaning without human intervention.

[0008] The present invention provides the following technical solutions: A water tank type fully automatic photovoltaic module on-track water cleaning device, comprising a cleaning body, a water tank, a distributed automatic water inlet component and a PLC controller, wherein the cleaning body comprises a cleaning frame and two left track electric wheels and two right track electric wheels installed at the bottom of the cleaning frame, the cleaning frame is installed on the left and right sides of the photovoltaic module, the left and right sides of the photovoltaic module are installed with a left track and a right track, the cleaning frame slides above the left track and the right track, an electric roller brush and a water spray pipe are arranged on the rear side of the cleaning frame, a plurality of water spray heads are arranged on the water spray pipe, a water tank is arranged above the cleaning frame, a high water level sensing switch is arranged above the water tank, a lower water level sensing switch is arranged below the water tank, a water tank water inlet is arranged above the right side of the water tank, a micro water pump is arranged at the water tank water outlet, the micro water pump outlet is connected to a water outlet solenoid valve, and the water outlet solenoid valve is connected to the water spray pipe; a water supply pipeline is arranged along the path of the cleaning body, and distributed automatic water inlet components are distributed on the water supply pipeline at a certain distance.

[0009] Furthermore, a rechargeable power supply is provided on the upper right side of the washing rack, and a water intake sensing switch, a water intake positioning electric push rod, a return parking sensing switch, and a return sensing switch are provided on the right side of the washing rack; a charging contact is provided on the upper left side of the washing rack, and a return parking static contact and a charging pile are provided on the starting position side of the washing body, and the return parking static contact is electrically connected to the return parking sensing switch; a terminal return static contact is provided at the end point of the photovoltaic component, and the terminal return static contact is electrically connected to the return sensing switch. After the parking sensing switch contacts the return parking static contact of the washing rack, the washing body stops at the starting position, and the charging contact contacts the charging pile for charging. The washing rack is provided with a mobile phone control switch, which can remotely control the start and stop of the washing body, and the washing rack is provided with a 24V positive power supply elastic contact and a 24V negative power supply elastic contact contact output.

[0010] Furthermore, the distributed automatic water inlet component includes a water intake signal needle, a water intake positioning baffle, a water inlet solenoid valve, a water tank water inlet pipe and a water tank water inlet nozzle. The water inlet solenoid valve has a positive end of a coil and a negative end of a coil. The water intake signal needle is electrically connected to the water intake sensing switch on the cleaning rack. The water tank water inlet pipe and the water tank water inlet nozzle are arranged on the water inlet solenoid valve. The positive end of the coil and the negative end of the coil are electrically connected to the 24V positive power supply elastic contact and the 24V negative power supply elastic contact on the cleaning rack.

[0011] A cleaning method for a water tank type fully automatic photovoltaic module on-track water cleaning device comprises the following steps: (1) Before the cleaning machine is started, it is at the starting position of the photovoltaic panel array, waiting for the execution of the program; (2) When the program control time is up, the two left track electric wheels and the two right track electric wheels on the cleaning rack start, and the cleaning body moves forward in the set direction; (3) When the cleaning machine moves to the first water-intake signal needle, the water-intake sensor switch on the cleaning rack senses the action, and the PLC controller responds as follows: (a) The two left track electric wheels and the two right track electric wheels on the cleaning rack lose power after a delay of several seconds; (b) The electric push rod for water intake positioning moves; (c) After the water intake positioning electric push rod moves, it moves forward and stops when it encounters the water intake positioning baffle; (d) After parking, the 24V positive power supply elastic contact and the 24V negative power supply elastic contact are connected to the positive end and negative end of the coil of the water inlet solenoid valve, and the water inlet solenoid valve is energized to open, so that the water in the water supply pipe flows through the water inlet solenoid valve, the water inlet pipe and the water inlet nozzle of the water tank into the water inlet of the water tank and into the water tank; When the water inlet of the water tank reaches the upper water level, the high water level sensor switch is activated, and the PLC controller responds in the following order: (a) The 24V positive power supply elastic contact and the 24V negative power supply elastic contact lose power, and the water inlet solenoid valve is closed; (b) The water intake positioning electric push rod retracts and disengages from the water intake positioning baffle; (c) The micro water pump in the water tank is activated, the water outlet solenoid valve opens, and water flows into the water spray pipe; (d) The electric roller brush is started, and the water in the water spray pipe is sprayed onto the electric roller brush through the water spray head; (e) The two left track electric wheels and the two right track electric wheels on the cleaning rack are powered, and the cleaning body moves forward, so that the electric roller brush cleans the photovoltaic panel under the condition of water; (f) Once the water level in the water tank drops to the lower water level, the low water level sensor switch will operate, cutting off the power supply to the micro water pump and the water outlet solenoid valve, thus playing a protective role.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts a water tank type, water is taken in sections and stored in the water tank, and a micro-water nozzle is used to spray the water on the rolling brush, and the rolling brush is cleaned during the forward movement. In this way, a very small amount of water can be used to still achieve the effect of cleaning the photovoltaic panel. The cleaning device is a water tank type, on-track, fully automatic, non-staff-intervention, and a cleaning method that perfectly combines an electric brush with micro-water. Since it is an on-track, extremely small amount of water, non-staff-intervention cleaning device, cleaning can be carried out at any time according to the situation, which can ensure that the light transmittance of the photovoltaic panel is in the optimal state for a long time, and it can be cleaned as new every day, greatly increasing the power generation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the present invention.

[0015] In the figure: 1. Cleaning machine body; 2. Cleaning rack; 3. Left track electric wheel; 4. Right track electric wheel; 5. Water tank; 6. Photovoltaic panel; 7. Distributed automatic water inlet assembly; 71. Water intake signal needle; 72. Water intake positioning baffle; 73. Water inlet solenoid valve; 74. Coil positive end; 75. Coil negative end; 76. Water tank inlet pipe; 77. Water tank inlet nozzle; 8. PLC controller; 9. Rechargeable power supply; 10. Water spray pipe; 11. Water spray head; 12. Electric roller brush; 13. Water intake sensor switch; 14. Water intake positioning electric push rod; 15. Return parking Induction switch; 16, return induction switch; 17, left track; 18, right track; 19, charging contact; 20, charging pile; 21, left support rolling wheel; 22, right support rolling wheel; 23, high water level induction switch; 24, starting position; 25, return parking static contact; 26, end return static contact; 27, water supply pipeline; 28, water tank inlet; 29, micro water pump; 30, water outlet solenoid valve; 31, mobile phone control switch; 32, 24V positive power supply elastic contact; 33, 24V negative power supply elastic contact; 34, low water level induction switch. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] See also Figure 1-2 The present invention discloses a water tank type fully automatic photovoltaic module on-track water cleaning device, which comprises a cleaning body 1, a water tank 5, a distributed automatic water inlet component 7 and a PLC controller 8. The cleaning body 1 comprises a cleaning frame 2 and two left track electric wheels 3 and two right track electric wheels 4 installed at the bottom of the cleaning frame 2. The cleaning frame 2 is installed on the left and right sides of the photovoltaic module 6. The left track 17 and the right track 18 are installed on the left and right sides of the photovoltaic module 6. The cleaning frame 2 slides above the left track 17 and the right track 18. The rear side of the cleaning frame 2 is provided with an electric roller brush 12 and a water spray pipe 10. The water spray pipe 10 is provided with a plurality of water spray heads 11. A water tank 5 is provided above the cleaning frame 2. A high water level sensing switch 23 is provided above the water tank 5 and a low water level sensing switch 34 is provided below the water tank 5. A water tank water inlet 28 is provided above the right side of the water tank 5. A micro water pump 29 is provided at the water outlet of the water tank 5. The outlet of the micro water pump 29 is connected to a water outlet solenoid valve 30. The water outlet solenoid valve 30 is connected to the water spray pipe 10. A water supply pipe 27 is provided along the path of the cleaning machine 1, and distributed automatic water inlet components 7 are distributed at a certain distance on the water supply pipe 27; A water intake sensing switch 13, a water intake positioning electric push rod 14, a return parking sensing switch 15, and a return sensing switch 16 are provided on the right side of the washing rack 2; a charging contact 19 is provided on the upper left side of the washing rack 2, and a return parking static contact 25 and a charging pile 20 are provided on one side of the starting position 24 of the washing body 1, and the return parking static contact 25 is electrically connected to the return parking sensing switch 15; a terminal return static contact 26 is provided at the end point of the photovoltaic component 6, and the terminal return static contact 26 is electrically connected to the return sensing switch 16. After the parking sensing switch 15 contacts the return parking static contact 25 of the washing rack, the washing body 1 stops at the starting position 24, and the charging contact 19 contacts the charging pile 20 for charging. The washing rack 2 is provided with a mobile phone control switch 31, which can remotely control the start and stop of the washing body 1, and the washing rack 2 is provided with a 24V positive power supply elastic contact 32 and a 24V negative power supply elastic contact 33 contact output.

[0018] A rechargeable power source 9 is provided at the upper right side of the cleaning rack 2. The PLC controller 8 is a Xinjie XD3-16R-C.

[0019] The distributed automatic water inlet component 7 includes a water intake signal needle 71, a water intake positioning baffle 72, a water inlet solenoid valve 73, a water tank water inlet pipe 76 and a water tank water inlet nozzle 77. The water inlet solenoid valve 73 has a coil positive terminal 74 and a coil negative terminal 75. The water intake signal needle 71 is electrically connected to the water intake sensing switch 13 on the cleaning rack 2. The water tank water inlet pipe 76 and the water tank water inlet nozzle 77 are arranged on the water inlet solenoid valve 73. The coil positive terminal 74 and the coil negative terminal 75 are electrically connected to the 24V positive power supply elastic contact 32 and the 24V negative power supply elastic contact 33 on the cleaning rack 2.

[0020] Two left track electric wheels 3 and two right track electric wheels 4 are installed at the bottom of both ends of the cleaning rack 2, and the left track electric wheel 3 and the two right track electric wheels 4 slide on the left track 17 and the right track 18.

[0021] A left supporting rolling wheel 21 is provided between the cleaning rack 2 and the left rail 17 , and a right supporting rolling wheel 22 is provided between the cleaning rack 2 and the right rail 18 .

[0022] The controller 8 is a time controller, which automatically controls the start-up and operation time of the device.

[0023] A cleaning method for a water tank type fully automatic photovoltaic module on-track water cleaning device comprises the following steps: (1) Before the cleaning machine 1 is started, it is at the starting position 24 of the photovoltaic panel 6 array, waiting for the execution of the program; (2) When the program control time is up, the two left track electric wheels 3 and the two right track electric wheels 4 on the cleaning rack 2 are started, and the cleaning body 1 moves forward in the set direction; (3) When the cleaning machine body 1 moves to the first water intake signal pin 71, the water intake sensor switch 13 on the cleaning rack 2 senses and operates, and the PLC controller 8 reacts as follows: (a) The two left track electric wheels 3 and the two right track electric wheels 4 on the cleaning rack 2 lose power after a delay of several seconds; (b) The water intake positioning electric push rod 14 moves; (c) After the water intake positioning electric push rod 14 is actuated, it moves forward and stops after encountering the water intake positioning baffle 72; (d) After the car is parked, the 24V positive power elastic contact 32 and the 24V negative power elastic contact 33 are connected to the positive terminal 74 and the negative terminal 75 of the coil of the water inlet solenoid valve 73, and the water inlet solenoid valve 73 is energized to open, so that the water in the water supply pipe 27 passes through the water inlet solenoid valve 73, flows into the water tank water inlet port 28 through the water tank water inlet pipe 76 and the water tank water inlet nozzle 77, and enters the water tank 5; When the water inlet of the water tank 5 reaches the upper water level, the high water level sensor switch 23 is activated, and the PLC controller 8 reacts in the following order: (a) The 24V positive power supply elastic contact 32 and the 24V negative power supply elastic contact 33 lose power, and the water inlet solenoid valve 73 is closed; (b) the water intake positioning electric push rod 14 retracts and disengages from the water intake positioning baffle 72; (c) The micro water pump 29 in the water tank 5 is activated, the water outlet solenoid valve 30 is opened, and water flows into the water spray pipe 10; (d) The electric roller brush 12 is started, and the water in the water spray pipe 10 is sprayed onto the electric roller brush 12 through the water spray head 11; (e) The two left track electric wheels 3 and the two right track electric wheels 4 on the cleaning frame 2 are powered, and the cleaning body 1 moves forward, so that the electric roller brush 12 cleans the photovoltaic panel 6 under the condition of water; (f) Once the water level in the water tank drops to the lower water level, the low water level sensing switch 34 is activated to cut off the power supply to the micro water pump 29 and the water outlet solenoid valve 30, thereby playing a protective role.

[0024] The cleaning body 1 is cleaned while moving forward. When it reaches the next water intake signal needle 71, the water intake sensor switch 13 on the cleaning rack 2 is activated again, and the PLC controller 8 issues the stop, water intake, and restart instructions again according to the previous action sequence. The cleaning body 1 moves forward, sprays water, and rotates and cleans while rolling. In this way, the cleaning body 1 completes the cleaning work of a photovoltaic section of about thirty to forty meters; the cleaning body 1 subsequently repeats the previous program process until the cleaning work of all n sections of the journey is completed, and continues to move forward and encounters the return static contact 26 at the end. The return sensor switch 16 senses and identifies, and shields the water intake sensor switch 13. The PLC controller 8 makes the cleaning body 1 return directly to the starting position 24 of the cleaning body 1 throughout the entire process, and the return stop sensor switch 15 contacts the return stop static contact 25 to stop, and the charging contact 19 contacts the charging pile 20 for charging. At this point, the cleaning work of this arrangement of photovoltaic panels is all completed, waiting for the next start program instruction.

[0025] After adopting the above structure, the beneficial effects produced by the present invention are: 1. Optimization of cleaning device structure The characteristics of this cleaning device are that there are only water tanks, rolling brushes with water sprays, and automatic water inlet components distributed along the photovoltaic modules on the cleaning rack. The device is simple and does not require any auxiliary equipment, manpower, or tools, which greatly reduces the investment cost of equipment and manpower. The cleaning device stops to take water in sections. After taking water, the water in the water tank is started to flow into the rolling brush for water cleaning. After cleaning for a section (about 30 to 40 meters), the device stops to take water again. This section-controlled cleaning method has innovated the water tank type fully automatic photovoltaic module on-track water cleaning device.

[0026] 2. The water-saving capability of the cleaning device has been greatly improved: The characteristic of this cleaning device is that it uses a very small amount of water to clean the photovoltaic panels. The innovation of this cleaning device is that it adopts a water tank type, automatically takes water in sections and stores it in the water tank, sprays it on the rolling brush and the photovoltaic panels with a micro-water nozzle, and the rolling brush cleans it while moving forward. In this way, a very small amount of water can still be used to clean the photovoltaic panels, which is completely suitable for use in water-scarce areas and is more in line with the current national policy of strengthening the conservation and intensive use of water resources.

[0027] 3. Further improvement in cleaning quality: This cleaning device is a water tank type, on-track, fully automatic, non-staff-intervention, electric brush and micro-water perfect combination of cleaning methods. Because it is an on-track, micro-water, non-staff-intervention cleaning device, it can be cleaned at any time according to the situation, and the cleaning effect and cleaning quality of the rolling brush with water have a qualitative breakthrough. It can ensure that the light transmittance of the photovoltaic panel is in the best state for a long time, so that it can be cleaned as new every day, greatly increasing the power generation.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A water tank type fully automatic photovoltaic module on-track water cleaning device, characterized by: It comprises a cleaning body (1), a water tank (5), a distributed automatic water inlet component (7) and a PLC controller (8). The cleaning body (1) comprises a cleaning frame (2) and two left track electric wheels (3) and two right track electric wheels (4) installed at the bottom of the cleaning frame (2). The cleaning frame (2) is installed on the left and right sides of a photovoltaic module (6). A left track (17) and a right track (18) are installed on the left and right sides of the photovoltaic module (6). The cleaning frame (2) slides above the left track (17) and the right track (18). An electric roller brush (12) and a water spray pipe (10) are provided at the rear side of the cleaning frame (2). The water spray pipe (10) has a plurality of rollers (12) and a plurality of rollers (10) on the rear side. A plurality of water spray heads (11) are provided. A water tank (5) is provided above the cleaning rack (2). A high water level sensing switch (23) is provided above the water tank (5), and a low water level sensing switch (34) is provided below the water tank (5). A water inlet (28) is provided above the right side of the water tank (5). A micro water pump (29) is provided at the water outlet of the water tank (5). The outlet of the micro water pump (29) is connected to a water outlet solenoid valve (30). The water outlet solenoid valve (30) is connected to a water spray pipe (10). A water supply pipe (27) is provided along the path of the cleaning body (1). Distributed automatic water inlet components (7) are distributed at a certain distance on the water supply pipe (27).

2. A water tank type fully automatic photovoltaic module on-track water cleaning device according to claim 1, characterized in that: A rechargeable power source (9) is provided at the upper right of the cleaning rack (2); a water intake sensor switch (13), a water intake positioning electric push rod (14), a return parking sensor switch (15), and a return sensing switch (16) are provided at the right side of the cleaning rack (2); a charging contact (19) is provided at the upper left side of the cleaning rack (2); a return parking static contact (25) and a charging pile (20) are provided at one side of the starting position (24) of the cleaning machine body (1); the return parking static contact (25) is electrically connected to the return parking sensor switch (15); and a terminal is provided at the end point of the photovoltaic module (6). The return static contact (26) is electrically connected to the return sensing switch (16); after the parking sensing switch (15) contacts the return parking static contact (25) of the cleaning rack, the cleaning machine body (1) stops at the starting position (24); the charging contact (19) contacts the charging pile (20) for charging; the cleaning rack (2) is provided with a mobile phone control switch (31) for remotely controlling the start and stop of the cleaning machine body (1); and the cleaning rack (2) is provided with a 24V positive power supply elastic contact (32) and a 24V negative power supply elastic contact (33) as contact outputs.

3. A water tank type fully automatic photovoltaic module on-track water cleaning device according to claim 1, characterized in that: The distributed automatic water inlet assembly (7) comprises a water intake signal needle (71), a water intake positioning baffle (72), a water intake solenoid valve (73), a water tank water intake pipe (76) and a water tank water intake nozzle (77); the water intake solenoid valve (73) comprises a coil positive terminal (74) and a coil negative terminal (75); the water intake signal needle (71) is electrically connected to a water intake sensing switch (13) on a cleaning rack (2); the water tank water intake pipe (76) and the water tank water intake nozzle (77) are arranged on the water intake solenoid valve (73); the coil positive terminal (74) and the coil negative terminal (75) are electrically connected to a 24V positive power supply elastic contact (32) and a 24V negative power supply elastic contact (33) on the cleaning rack (2).

4. A cleaning method for a water tank type fully automatic photovoltaic module on-track water cleaning device as claimed in claim 1, characterized in that: The steps include: (1) Before the cleaning machine (1) is started, it is at the starting position (24) of the photovoltaic panel (6) array, waiting for the execution of the program; (2) When the program control time is up, the two left track electric wheels (3) and the two right track electric wheels (4) on the cleaning rack (2) are started, and the cleaning machine body (1) moves forward in the set direction; (3) When the cleaning machine (1) moves to the first water-intake signal pin (71), the water-intake sensor switch (13) on the cleaning rack (2) senses and actuates, and the PLC controller (8) reacts as follows: (a) The two left track electric wheels (3) and the two right track electric wheels (4) on the cleaning rack (2) lose power after a delay of several seconds; (b) The water intake positioning electric push rod (14) moves; (c) after the water intake positioning electric push rod (14) is actuated, it moves forward and stops after encountering the water intake positioning baffle (72); (d) After the vehicle is stopped, the 24V positive power supply elastic contact (32) and the 24V negative power supply elastic contact (33) are connected to the positive end (74) and negative end (75) of the coil of the water inlet solenoid valve (73), and the water inlet solenoid valve (73) is energized to open, so that water in the water supply pipe (27) flows through the water inlet solenoid valve (73), the water tank inlet pipe (76) and the water tank inlet nozzle (77), and flows into the water tank inlet port (28) and enters the water tank (5); When the water inlet of the water tank (5) reaches the upper water level, the high water level sensor switch (23) is activated, and the PLC controller (8) reacts in the following order: (a) The 24V positive power supply elastic contact (32) and the 24V negative power supply elastic contact (33) lose power, and the water inlet solenoid valve (73) is closed; (b) the water intake positioning electric push rod (14) retracts and disengages from the water intake positioning baffle (72); (c) the micro water pump (29) in the water tank (5) is activated, the water outlet solenoid valve (30) is opened, and water flows into the water spray pipe (10); (d) the electric roller brush (12) is started, and water in the water spray pipe (10) is sprayed onto the electric roller brush (12) through the water spray head (11); (e) two left track electric wheels (3) and two right track electric wheels (4) on the cleaning frame (2) are powered, and the cleaning body (1) moves forward, so that the electric roller brush (12) cleans the photovoltaic panel (6) under the condition of water; (f) Once the water level in the water tank drops to the lower water level, the low water level sensing switch (34) is activated to cut off the power supply to the micro water pump (29) and the water outlet solenoid valve (30).

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