CN204523690U - Large-sized photovoltaic power station photovoltaic module automatic rinser - Google Patents

Abstract

The utility model relates to an automatic cleaning machine for photovoltaic components of a large-scale photovoltaic power station. Its characteristics are: including the body (1), crawlers (2) are respectively installed on the left and right sides of the front of the body (1), and the crawlers (2) are connected to the DC geared motor (9) through a belt transmission mechanism; At least one airtight chamber (8) is installed in the middle of the front of the body (1), and each airtight chamber (8) is communicated with a miniature vacuum pump (12) through a hose; The rag module (4) is also equipped with a spiral sweep brush (5) in front of the wet rag module (4), and the spiral sweep brush (5) is connected to the micro motor (11) through a transmission mechanism. The utility model provides an automatic cleaning machine for photovoltaic components of a large-scale photovoltaic power station, which realizes the cleaning of the surface of the photovoltaic panel during the movement of the cleaning machine, adopts the water-sealed dust removal technology, and uses the strong affinity between dust and water to complete dust collection .

Description

Large-scale photovoltaic power station photovoltaic module automatic cleaning machine

technical field

The utility model relates to an automatic cleaning machine for photovoltaic components of a large-scale photovoltaic power station.

Background technique

As the most popular new energy source in the 21st century, solar energy is attracting more and more attention from all over the world because of its wide sources, cleanness and no pollution. Photovoltaic power generation is the main direction of solar energy utilization. In the operation process of large-scale photovoltaic power plants, it is one of the important indicators of power plant operation. In addition to factors such as photovoltaic array efficiency, inverter conversion efficiency, and grid connection efficiency, dust accumulation on the surface of photovoltaic modules also has a greater impact on power generation. In the test results of a 2MW amorphous silicon photovoltaic power station in Bengbu, it was found that 20 days of dust on the surface reduced the power generation of photovoltaic module strings by 24%. Zhang Feng et al. conducted research on TSM-DC01A.05. When the irradiance and temperature were 1000W/㎡ and 25° respectively, when the dust concentration of the photovoltaic module increased from 0 to 5g/㎡, the output power of the module increased from 192.3W Down to 147.6W, the drops are 6.67%, 11.96%, 16.28%, 20.07% and 23.24%.

It can be seen from the above data that the dust accumulation on the surface of photovoltaic modules seriously affects its power generation efficiency. my country's large-scale photovoltaic power plants are mainly concentrated in the western Gobi desert area, where there is drought and little water, and transportation is inconvenient. Manual cleaning of photovoltaic modules requires a lot of work and high costs. In addition, dust accumulation will cause hot spot effect, affect the life of components, and cause safety hazards.

Utility model content

The purpose of the utility model is to provide an automatic cleaning machine for photovoltaic components of a large-scale photovoltaic power station, which can realize the cleaning of the surface of the photovoltaic panel during the movement of the cleaning machine, and the cleaning cost is low and the cleaning efficiency is high.

An automatic cleaning machine for photovoltaic modules of a large-scale photovoltaic power station. At least one airtight chamber is installed in the middle of the front, and each airtight chamber is connected with a micro-vacuum pump through a hose; a wet rag module is installed in front of the airtight chamber, and a spiral sweeping brush is also installed in front of the wet rag module. The spiral sweeping brush is connected to the micro motor through a transmission mechanism. An axial flow fan is installed in the middle of the spiral sweeping brush. The outlet of the axial flow fan is connected to the water-sealed dust removal box. In addition, a dry rag module is installed behind the closed cavity.

Wherein, an ultrasonic rangefinder and a gyroscope module are also installed on the body, and the ultrasonic rangefinder and the gyroscope module are respectively connected with a control unit, and the control unit is also respectively connected with a DC geared motor, a miniature vacuum pump and a miniature motor.

The utility model provides an automatic cleaning machine for photovoltaic components of a large-scale photovoltaic power station. The cleaning machine combines vacuum adsorption technology and crawler drive technology, and can realize the attachment and free movement of the cleaning machine on the surface of the photovoltaic panel. The three-step cleaning method is used to realize The cleaning machine cleans the surface of the photovoltaic panel during the movement, and adopts the water-seal dust removal technology to complete the collection of dust by using the strong affinity between dust and water. The beneficial effects of the utility model also include: 1. By cleaning the photovoltaic modules, the power generation of the photovoltaic modules is improved. 2. Reduce the potential safety hazard caused by the hot spot effect of photovoltaic modules caused by dust, and improve the service life of photovoltaic panels. 3. It greatly liberates manpower, and the cleaning cost is low, the cleaning efficiency is high, and water resources are saved.

Description of drawings

Accompanying drawing 1 is the structural representation of the front of the utility model;

Accompanying drawing 2 is the structural representation of the back of the utility model;

Accompanying drawing 3 is the logical block diagram of the utility model;

Accompanying drawing 4 is the control flowchart of the present utility model.

Detailed ways

As shown in Figures 1, 2, and 3, the utility model provides an automatic cleaning machine for photovoltaic modules in a large-scale photovoltaic power station, which includes a body 1, and crawler belts 2 are respectively installed on the left and right sides of the front of the body 1. The crawler belts 2 pass through the belt The transmission mechanism (such as a synchronous belt) is connected to the DC geared motor 9; at least one airtight chamber 8 is installed in the middle of the front of the body 1, and each airtight chamber 8 is communicated with a micro vacuum pump 12 through a rubber hose; A wet rag module 4 is installed in the front of the airtight chamber 8 (i.e. the top in Fig. 1), and it is supplied with water by the water tank above it to keep the module moist all the time, and the wet rag can be replaced if dirty. A spiral sweeping brush 5 is also installed in front of the wet rag module 4, and the spiral sweeping brush 5 is connected to the micro motor 11 through a transmission mechanism. An axial fan 6 is installed in the middle of the spiral sweeping brush 5. The axial flow fan 6 The outlet of the outlet is communicated with the water-sealed dust removal box 13, and there is a certain amount of water in the water-sealed dust removal box 13, so that the air with dust and water (water vapor) in the dust removal box can contact as much as possible, and utilize the affinity of water and dust to dissolve the dust in Water to achieve dust adsorption. In addition, a dry rag module 10 is installed behind the airtight cavity 8 (i.e., the bottom in Fig. 1), if the module is no longer dry, then replace the module.

Wherein on the body 1, an ultrasonic range finder 3 and a gyroscope module are also installed, and the ultrasonic range finder 3 is connected with the gyroscope module and a control unit 14, and the control unit 14 is also connected with a DC geared motor 9 and a miniature vacuum pump 12 respectively. , Micro motor 11 is connected.

The utility model adopts a single-chip microcomputer as the control unit 14, and the control unit 14 collects the motion position and motion posture information of the cleaning machine in real time, and then controls the working state of the DC gear motor 9 to make it normally complete the cleaning task. This technology is widely used on existing intelligent sweeping robots, and belongs to existing conventional technical means.

Using method and working principle of the present utility model are:

When working, first place the body 1 of the automatic cleaning machine of the present invention parallel to the surface of the photovoltaic panel, and apply a certain pressure to make the airtight cavity 8 contact with the surface of the photovoltaic panel to form a sealed environment. Then turn on the micro-vacuum pump 12 to provide negative pressure for the sealed cavity 8, so that the body 1 is attached to the surface of the photovoltaic module. After the body 1 is firmly adsorbed to the surface of the photovoltaic panel, the control unit 14 is turned on. The control unit 14 controls the DC reduction motor 9 to drive the synchronous pulley 7 and the synchronous belt, so as to make the motor body 1 move. During the movement of the body 1, the micro-motor 11 drives two (opposite directions of rotation) spiral sweep brushes 5 to rotate, knocks up the dust on the surface of the photovoltaic panel, and uses the guiding effect of the spiral structure to gather the dust to one place (that is, two In the middle of the spiral sweeping brush 5), the dust is discharged to the water-sealed dust removal box 13 by the axial flow fan 6 to complete the dust removal task.

The surface of the photovoltaic panel is cleaned by a spiral roller brush, most of the dirt will be removed, and a small amount of dirt remains on the surface. In this case, set a wet rag to scrub the module after the spiral brush to remove the residual dirt on the surface of the photovoltaic panel after the first step of cleaning. In order to prevent secondary pollution of photovoltaic panels caused by residual water stains after wiping with a wet rag, and form more difficult-to-clean dirt, a dry rag wiping module is installed behind the vacuum suction cup. Through the three cleaning processes of mechanical dust collection - static dust removal - flexible cleaning, the relatively clean cleaning of the surface of the photovoltaic panel is completed.

When the cleaning machine moves to the edge of the photovoltaic panel array, if it completes the cleaning task of the remaining area, it needs to change direction. The control unit 14 collects the data of the ultrasonic rangefinder 3 at any time (at any time), and judges by the program whether it reaches the edge of the photovoltaic array (this technology is generally used on existing intelligent sweeping robots, and belongs to the existing conventional technical means). When arriving, the control drive circuit provides control signals for the two crawler belts 2 to drive the DC gear motor 9 to realize the differential speed on the left and right sides of the crawler belt 2, and then realize the commutation to the left or right. It is also possible to use the gyroscope module (to detect whether the washing machine has turned over a predetermined angle to complete the reversing task. If it has not turned over a predetermined angle, continue to turn, otherwise, complete the turn, stop the turn, and proceed to the next stage of straight line cleaning process.

Claims (2)

1. a large-sized photovoltaic power station photovoltaic module automatic rinser, it is characterized in that: comprise body (1), be separately installed with crawler belt (2) in the left and right sides, front of this body (1), this crawler belt (2) is in transmission connection by tape handler and DC speed-reducing (9); In the middle of the front of this body (1), be provided with at least one closed containing cavity (8), each closed containing cavity (8) is all communicated with minipump (12) by flexible pipe; In this closed containing cavity (8) front, wet rag module (4) is installed, in this wet rag module (4) front, spiral brush (5) is also installed, this spiral brush (5) is in transmission connection by transmission mechanism and micromachine (11), in the middle of this spiral brush (5), axial flow blower (6) is installed, the outlet of this axial flow blower (6) is communicated with water seal dust cleaning case (13), is provided with dry wipe module (10) in addition at this closed containing cavity (8) rear.

2. large-sized photovoltaic power station as claimed in claim 1 photovoltaic module automatic rinser, it is characterized in that: wherein on body (1), ultrasonic range finder (3) and gyro module are also installed, this ultrasonic range finder (3) and gyro module are connected with control unit (14) respectively, and this control unit (14) is also connected with DC speed-reducing (9), minipump (12), micromachine (11) respectively.