CN210405206U

CN210405206U - Automatic dust pelletizing system of solar panel large granule based on clean hydrologic cycle

Info

Publication number: CN210405206U
Application number: CN201920786023.8U
Authority: CN
Inventors: 成峰; 王瑜; 鲍俊
Original assignee: Nanjing Tech University
Current assignee: Nanjing Tech University
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-04-24
Anticipated expiration: 2029-05-27

Abstract

The utility model provides an automatic dust pelletizing system of solar panel large granule based on clean hydrologic cycle, belongs to photovoltaic power generation equipment and maintains the field. This patent can effectively get rid of "hot spot" on the solar panel, especially dust and the bird droppings of large granule. The main components comprise a dust removal device controller, a sensor, a solar controller, a thermal imaging detector, a stepping motor, a spraying device, an electronic flow regulating valve, a water inlet stop valve, a water supply tank, a water pump, a treatment water tank, a transverse fixing frame, a longitudinal fixing frame, a brush, a storage battery and a data transmission unit. The system adopts an automatic control system to detect and clean the solar panel in different areas, regulate the water amount and recycle the clean water for secondary utilization, the dust removal device controller is connected with the solar panel through the solar controller to provide a power supply, and meanwhile, the storage battery is connected in parallel to store redundant electric quantity, thereby achieving the purposes of water saving and energy saving. The brush is longitudinally cleaned, and secondary cleaning is realized.

Description

Automatic dust pelletizing system of solar panel large granule based on clean hydrologic cycle

Technical Field

The patent relates to an automatic dust pelletizing system of solar panel large granule based on clean hydrologic cycle belongs to photovoltaic dust collecting equipment field.

Background

Solar energy is considered as one of the most promising energy sources, energy conservation and emission reduction become a concern with the increasing severity of energy problems, the solar energy becomes a green energy source which is competitively developed by various countries, and meanwhile, as the use time is accumulated, a layer of dust mainly comprising inorganic SIO2, organic pollutants (bird dung) and the like is gradually accumulated on the light-facing surface of the solar panel, so that the absorption of the solar panel on light is weakened, the power generation capacity of the battery is influenced, and the solar panel is easy to damage due to local heating of the battery caused by the heat island effect.

There are three major types of cleaning methods for solar panels at present: the first category of manual tools is the periodic cleaning of the surface of the photovoltaic module, which is now used in most local photovoltaic power plants. But at the same time, the method brings about larger labor cost; the second type is that the toughened glass on the surface of the photovoltaic module is replaced by self-cleaning glass, most of the research on the self-cleaning glass is in an experimental stage, the cost is high, and the large-scale popularization is difficult. The third type is a mechanical device, which depends on a mechanical moving device of the photovoltaic module, or utilizes a rolling brush or has an unobvious high-pressure purging effect, and utilizes a water spraying device to worry about water quantity on one hand and labor consumption on the other hand to carry out field operation, so that further development of the device is restricted. For example, patent 201820633006.6 only considers automatic control, and has no effect on large-particle dust and bird droppings which are difficult to remove, and for example, patent 201710646404.1 recycles clean water, but a large amount of water resources are consumed in the first cleaning process, so that the space is greatly increased. In order to reduce or eliminate the influence of the 'hot spot', the integrated bypass diode is connected into the photovoltaic module junction box, which can play a very positive role in a large-scale photovoltaic power generation system, particularly a system with higher direct-current end voltage, but the bypass diode in the module junction box can only solve the influence of large-area shading of the module on the output of the module, and does not play a fundamental role in shading or 'hot spot' of individual cells in the module. Typically, when the module is partially or fully shaded, there is still 20% to 30% of the scattered radiation from the shaded portion that is directed onto the module, where the bypass diode is inactive.

Above-mentioned problem has fully been considered to this patent, and its advantage lies in large granule observable, easily clears away, the water economy volume, and dust collector electric quantity has the source. In order to solve the problems of individual shading and 'hot spots' in the assembly, an infrared imager is adopted to shoot infrared images, and the hot spots of the battery on the large-area solar panel can be quickly found and positioned in a non-contact mode; cleaning large-particle dust and bird droppings by using an alkaline cleaning agent; in order to save water, a recovery device is added, clean water is recovered, a filtering device consisting of a flocculating agent, activated carbon and a filter screen is used for purifying, and rainwater is collected and is used together after being filtered in the same way; the solar dust collection device comprises a solar controller, a solar panel, a storage battery, a dust collection controller, a solar battery, a solar dust collection device, a storage battery, a solar battery controller, a storage battery and a power supply.

Disclosure of Invention

The purpose of this patent is an automatic dust pelletizing system of solar panel large granule based on clean hydrologic cycle.

The system comprises a solar panel, a mobile phone and computer processing equipment, a data transmission unit, a dust removal device controller, a temperature and humidity sensor, an illumination wind speed sensor, a solar controller, a storage battery, a stepping motor, an infrared thermal imaging detector, a spraying device, a brush, a connecting rod, a limit switch, a transverse fixing frame, a longitudinal fixing frame, a water return pool, a water return pipe, a water purification tank, a water supply tank, a water pump, a rainwater treatment tank, a mixing box, a water supply pipe, an electronic flow valve, a water inlet stop valve, a frame guide rail, a working frame, a water inlet pipe, a first filtering device, a second filtering device, a first sewage discharge valve, a second sewage discharge valve, a first nozzle, a second nozzle, a third nozzle and a fourth nozzle.

The dust removal device controller is provided with three connecting outlets and five connecting inlets, the first outlet is connected with the stepping motor, the second outlet is connected with the electronic flow valve, and the third outlet is connected with the data transmission unit; the five inlets are respectively connected with a data transmission unit, a temperature and humidity sensor, an illumination and wind speed sensor, a solar controller and an infrared thermal imaging detector. The other side of the data transmission unit is also connected with a mobile phone and computer processing equipment, one end of the solar controller is connected with the solar panel, and the other end of the solar controller is connected with the storage battery. The thermal imaging detector is fixed right above the solar panel by the transverse fixing frames on two sides, the transverse fixing frames are connected to the longitudinal fixing frames on the two sides, and the brush is arranged below the longitudinal fixing frames. The upper part of the longitudinal fixing frame is connected with a spraying device, and the lower part of the longitudinal fixing frame is connected with a water return pool; the water return pool is connected with the purified water tank through a water return pipe. The spraying device is provided with a first nozzle, a second nozzle, a third nozzle and a fourth nozzle.

The water supply tank comprises two inlets and an outlet, the first inlet is connected with the mixing tank, and the mixing tank is connected with the rainwater treatment tank and the inlet water pipe; the second inlet of the water supply tank is connected with a treatment water tank, and the purification water tank is connected with the water return pool through a water return pipe. The outlet of the water supply tank is connected with a water pump, an electronic flow valve, a water inlet stop valve and a spraying device in sequence through a water supply pipe; the spraying device is provided with a first nozzle, a second nozzle, a third nozzle and a fourth nozzle.

The rainwater treatment box is internally provided with a first filtering device, one side of the first filtering device is connected with the mixing box, the other side of the first filtering device is provided with a first blow-down valve, the purifying water tank is also internally provided with a filtering device, the other side of the first filtering device is connected with the water supply tank, and the other side of the first filtering device is provided with a second blow-down valve. The first filtering device and the second filtering device are both composed of flocculating agent, active carbon and filter screen.

A stepping motor is installed at the lower right of the whole working frame, an output shaft of the stepping motor is connected with a connecting rod, and the spraying device moves left and right on a frame guide rail. And a limit switch is arranged on the left side of the working frame.

The system operation process is as follows: the rainwater treatment box collects rainwater, and the rainwater filtered by the first filter is added with an alkaline cleaner, namely an American GE Bedy alkaline membrane cleaner MCT511, in the mixing box, so that the rainwater treatment box is particularly effective in removing organic matters, the dilution ph is kept at 10.5 +/-0.5, the rainwater treatment box can be repeatedly used, and the common dilution ratio is 1-3% of the whole cleaning system. One side of the rainwater treatment box is provided with a first drain valve for draining filter residues; clean water in the mixing tank is sent into a water supply tank, a water pump is used for cleaning the solar panel in blocks uniformly through a water supply pipe, an electronic flow valve and a water inlet stop valve, and a spraying device is used for cleaning the solar panel in blocks through a first nozzle, a second nozzle, a third nozzle and a fourth nozzle; the cleaned cleaning water is collected by a water return pool and is sent into a purification water tank by a water return pipe, the purification water tank is provided with a second filtering device, the filtering device consists of a flocculating agent, active carbon and a filter screen, and filter residues are discharged by a second blow-down valve; the purified clean water enters the water supply tank.

The horizontal fixing frame is provided with an infrared thermal imaging detector for detecting and exploring hot spots on the surface of the solar panel, the two sides of the horizontal fixing frame are connected with the longitudinal fixing frame, and the longitudinal fixing frame is provided with a vertically downward brush; the start and stop of the electronic flow valve are controlled by a dust removal device controller, the electric quantity of the dust removal device controller is normally derived from the redundant electric quantity of the solar panel, the solar controller is connected in series between the dust removal device controller and the solar panel, the current and the voltage generated by the solar panel are unstable and are stabilized by the solar controller, the solar controller is also connected with a storage battery, when extreme weather such as heavy rain, heavy fog and the like occurs, the solar panel cannot normally work, and at the moment, the storage battery supplies power to the dust removal device controller; the dust collector controller controls the start and stop of the electronic flow valve and the stepping motor, and the stepping motor drives the connecting rod to move the working frame on the frame guide rail. The vertical fixing frame on the working frame is vertically and downwards provided with a brush to realize horizontal secondary cleaning.

The dust removal device controller is simultaneously connected with a temperature and humidity sensor and an illumination wind speed sensor, the surrounding environment is detected, and thermal imagery inspection is carried out on clear weather, because clouds can reduce the solar radiation intensity and generate thermal radiation interference; a calm, windless environment is also advantageous because any airflow over the surface of the solar panel can cause convective cooling, thereby reducing thermal gradients; the lower the air temperature is, the higher the potential thermal contrast is, and the temperature and humidity sensor and the illumination wind speed sensor are used for detecting and removing dust in the most suitable weather environment.

Drawings

Fig. 1 is a schematic diagram of the patent.

Reference designations in FIG. 1: 1. the solar energy collecting device comprises a solar panel, 2 mobile phone and computer processing equipment, 3 a data transmission unit, 4 a dust removal device controller, 5 a temperature and humidity sensor, 6 an illumination air speed sensor, 7 a solar energy controller, 8 a storage battery, 9 a stepping motor, 10 an infrared thermal imaging detector, 11 a spraying device, 12 a brush, 13 a connecting rod, 14 a limit switch, 15 a transverse fixing frame, 16 a longitudinal fixing frame, 17 a water return tank, 18 a water return pipe, 19 a purified water tank, 20 a water supply tank, 21 a water pump, 22 a rainwater processing tank, 23 a mixing tank, 24 a water supply pipe, 25 an electronic flow valve, 26 a water inlet stop valve, 27 a frame guide rail, 28 a working frame, 29 an inlet water pipe, 30 a first filtering device, 31 a second filtering device, 32 a first blow-down valve, 33 a second blow-down valve, 34 a first nozzle, and a second blow-down valve, 35. Second nozzle, 36, third nozzle, 37, fourth nozzle.

Detailed Description

As shown in figure 1, the large particle dust removing system based on water circulation automatic detection mainly comprises a solar panel 1, a mobile phone 2, a computer processing device 3, a data transmission unit 4, a dust removal device controller 5, a temperature sensor, a humidity sensor 6, an illumination wind speed sensor 7, a solar energy controller 8, a storage battery 9, a stepping motor 10, an infrared thermal imaging detector 11, a spraying device 11, a brush 12, a connecting rod 13, a limit switch 14, a transverse fixing frame 15, a longitudinal fixing frame 16, a water return tank 17, a water return pipe 18, a water return pipe 19, a purified water tank 20, a water supply tank 21, a water pump 22, a rainwater processing tank 23, a mixing tank 24, a water supply pipe 25, an electronic flow valve 26, a water inlet stop valve 27, a frame guide rail 28, a working frame 29, an inlet water pipe 30, a first filtering device 31, and a second filtering device 31, 32. The sewage treatment device comprises a first sewage draining valve, 33, a second sewage draining valve, 34, a first nozzle, 35, a second nozzle, 36, a third nozzle, 37 and a fourth nozzle.

The infrared thermal imaging detector 10 arranged on the transverse fixing frame 15 is used for detecting the 'hot spots' on the surface of the partitioned solar panel 1, the infrared thermal imaging detector 10 converts radiation signals into electric signals, an electronic component in the dust removal device controller 4 processes and analyzes the electric signals, then the electronic flow valve 25 is started, clean water is sprayed through the first nozzle 34, the second nozzle 35, the third nozzle 36 and the third nozzle 37 on the spraying device 11, the cleaning is carried out according to a set time length, for example, ten minutes later, the cleaning is carried out again, if the 'hot spots' still exist on the surface of the cleaning, the 'hot spots' exist after two times, the cleaning of the area is abandoned, and the data transmission unit 3 sends signals to the mobile phone and the computer processing equipment 2. Reminding workers of manual treatment. The dust collector controller 4 then drives the stepping motor 9 to move the work frame 28 to the next area of the solar panel 1.

Clean water from the water supply tank 20 flows from the water supply pipe 24 through the water pump 21, the electronic flow valve 25 and the water inlet stop valve 26, uniformly cleans the partitioned solar panels 1 from the nozzles 34 on the spray device 11, and then flows from the water return tank 17 through the water return pipe 18 into the purified water tank 19. The wastewater in the purified water tank 19 passes through the second filtering device 31, the first filtering device 30 and the second filtering device 31 are both composed of activated carbon, flocculating agent and filter screen, the second blow-off valve 33 is arranged at the other end of the purified water tank 19, and the purified clean water enters the water supply tank 20. At the other end of the water supply tank 20, the rainwater treated by the first filtering device 30 is treated by a rainwater treatment tank 22 which is collected normally, a cleaning agent of a GE Bedy alkaline membrane cleaning agent MCT511 is added into a mixing tank 23, the dilution ph is kept at 10.5 +/-0.5, the cleaning agent can be reused, the common dilution ratio is one percent to three percent of the whole cleaning system, so that the cleaning water is alkaline and is sent into the water supply tank 20; the rainwater treatment tank 22 and the purified water tank 19 are respectively provided with a first blowdown valve 32 and a second blowdown valve 33 for periodically discharging filter residues. The rainwater and the waste water are secondarily utilized to save water; reducing pipes are adopted among the spraying device 11, the first nozzle 34, the second nozzle 35, the third nozzle 36 and the fourth nozzle 37 to increase outlet pressure.

The power of dust collector controller 4 is passing through solar controller 7 and being connected solar panel 1, and the unnecessary electric quantity of the electricity generation of solar panel 1 is usually used, still is connecting battery 8, stores unnecessary electric quantity in battery 8, and when extreme weather such as heavy rain and heavy fog, solar energy power generation is unstable, then supplies power to dust collector controller 4 with battery 8. The dust removal device controller 4 is also simultaneously connected with a temperature and humidity sensor 5 and an illumination wind speed sensor 6 to detect the surrounding environment, and the thermal imaging inspection should be carried out on clear weather because clouds can reduce the solar radiation intensity and generate thermal radiation interference; a quiet environment is also advantageous because any air flow over the surface of the solar panel can cause convective cooling, thereby reducing thermal gradients; the lower the air temperature, the higher the potential thermal contrast; the mobile phone and the computer processing equipment 2 are connected with the dust removal device controller 4 through the data transmission unit 3, so that manual control is facilitated, and meanwhile, the operation condition of the dust removal device controller 4 can be fed back to the mobile phone and the computer processing equipment through the data transmission unit 3; the dust removal device controller 4 is connected with the electronic flow valve 25 and the stepping motor 9, and drives the stepping motor 9 to move to the next area after cleaning of one area is finished; the stepping motor 9 drives the connecting rod 13 to move the working frame 28 on the frame rail 27. The brush 12 is vertically and downwards arranged on the longitudinal fixing frame 16 on the working frame 28, so that the transverse secondary cleaning is realized.

Claims

1. The utility model provides an automatic dust pelletizing system of solar panel large granule based on clean hydrologic cycle which characterized in that:

the device comprises a solar panel (1), a mobile phone and computer processing device (2), a data transmission unit (3), a dust removal device controller (4), a temperature and humidity sensor (5), an illumination wind speed sensor (6), a solar controller (7), a storage battery (8), a stepping motor (9), an infrared thermal imaging detector (10), a spraying device (11), a brush (12), a connecting rod (13), a limit switch (14), a transverse fixing frame (15), a longitudinal fixing frame (16), a water return tank (17), a water return pipe (18), a purified water tank (19), a water supply tank (20), a water pump (21), a rainwater processing tank (22), a mixing tank (23), a water supply pipe (24), an electronic flow valve (25), a water inlet stop valve (26), a frame guide rail (27), a working frame (28), an inlet water pipe (29), a first filtering device (30), The second filtering device (31), the first blowdown valve (32), the second blowdown valve (33), the first nozzle (34), the second nozzle (35), the third nozzle (36) and the fourth nozzle (37);

the dust removal device controller (4) is provided with three connecting outlets and five connecting inlets, a first outlet is connected with a stepping motor (9), a second outlet is connected with an electronic flow valve (25), a third outlet is connected with a data transmission unit (3), the five inlets are respectively and sequentially connected with the data transmission unit (3), a temperature and humidity sensor (5), an illumination air velocity sensor (6), a solar controller (7) and an infrared thermal imaging detector (10), the other side of the data transmission unit (3) is also connected with a mobile phone and a computer processing device (2), and the data transmission unit (3), the mobile phone and the computer processing device (2) receive and transmit signals mutually;

solar panel (1) is connected to solar controller (7) one end, battery (8) is connected to the other end, infrared ray thermal imaging detector (10) is fixed directly over solar panel by horizontal mount (15) on both sides, horizontal mount (15) are connected on vertical mount (16) on both sides, brush (12) are equipped with to vertical mount (16) below, spray set (11) are being connected to vertical mount (16) top, return water pond (17) is connected to the below, feed water tank (20) contain two entrances and an export, mixing box (23) are being connected to first entrance, mixing box (23) link to each other with rainwater treatment box (22) and intake water pipe (29), purification water tank (19) are being connected to the second entrance, purification water tank (19) link to each other with return water pond (17) through return water pipe (18), water pump (21) are being connected in proper order through delivery pipe (24) in the export of feed water tank (20), The device comprises an electronic flow valve (25), a water inlet stop valve (26) and a spraying device (11), wherein a first filtering device (30) is arranged in a rainwater treatment tank (22), and is connected with a mixing tank (23) at one side, a first blow-off valve (32) is arranged at the other side, a filtering device is also arranged in a purified water tank (19), and is connected with a water supply tank (20) at one side, and a second blow-off valve (33) is arranged at the other side; a stepping motor (9) is arranged at the lower right of the whole working frame (28), an output shaft of the stepping motor (9) is connected with a connecting rod (13), a spraying device (11) moves left and right on a frame guide rail (27), and a limit switch (14) is arranged at the left of the working frame (28).

2. The solar panel large particle automatic dust removal system based on clean water circulation is characterized in that: a photoelectric sensor is arranged in the dust removal device controller (4), the electronic flow valve (25) is connected and controlled at the same time, the stepping motor (9) is controlled and connected at the same time, the solar panel (1) is detected in a blocking mode through the infrared thermal imaging detector (10), the radiation signal is converted into an electric signal, an electronic component in the dust removal device controller (4) processes the electric signal into a visible light image, the visible light image is further analyzed and processed, after obvious 'hot spots' occur, the electronic flow valve (25) is started to operate according to set duration through the output of a control signal by an electric signal processing device in the dust removal device controller (4), and finally the electric signal is sent to a mobile phone and a computer processing device (2) through the data transmission unit (3) to be fed back to a worker if the 'hot spots' cannot.

3. The solar panel large particle automatic dust removal system based on clean water circulation is characterized in that: when the nozzles (34) of the spraying device (11) are arranged to enable the cleaning water to uniformly cover the whole block area, the parts from the spraying device (11) to the first nozzle (34), the second nozzle (35), the third nozzle (36) and the fourth nozzle (37) are required to be reduced tubes, so that the water outlet pressure can be increased and then the solar panel (1) is sprayed; the spraying device (11) corresponds to the water return pool (17), and when the spraying device moves transversely, the vertical hairbrush (12) arranged on the spraying device can transversely clean the solar panel.

4. The solar panel large particle automatic dust removal system based on clean water circulation is characterized in that: be equipped with first filter equipment (30) in rainwater processing case (22), be equipped with second filter equipment (31) in purified water tank (19), effective filtration washs the waste water of solar panel (1) to purified water tank (19) and rainwater processing case (22) both sides still are equipped with first blowoff valve (32) and second blowoff valve (33), regularly arrange the filter residue.

5. The solar panel large particle automatic dust removal system based on clean water circulation is characterized in that: the power supply of the dust removal device controller (4) is from the solar panel (1), the current and voltage provided by the solar panel (1) are unstable, the current and voltage are stabilized through the solar controller (7), and redundant electric quantity is stored in the storage battery (8); when extreme weather of heavy rain and heavy fog occurs, the dust removal device controller (4) detects that the power generation amount of the solar panel is unstable, and therefore the storage battery (8) is started to supply power to the dust removal device controller (4).

6. The solar panel large particle automatic dust removal system based on clean water circulation is characterized in that: the dust removal device controller (4) is connected with the temperature and humidity sensor (5) and the illumination wind speed sensor (6), and is also connected with the mobile phone and the computer processing equipment (2) through the data transmission unit (3), so that the manual control is facilitated, and the most suitable weather environment for dust removal can be selected by utilizing the temperature and humidity sensor (5) and the illumination wind speed sensor (6).