CN104092433A - A solar photovoltaic cell module cleaning device - Google Patents

Abstract

The invention discloses a cleaning device for solar photovoltaic cell assemblies. The cleaning device comprises a high-pressure water supply device, a high-pressure-resistant water delivery pipe communicated with the high-pressure water supply device and a plurality of atomization devices communicated with the high-pressure-resistant water delivery pipe. The atomization devices are installed at the upper edges of the photovoltaic cell assemblies. According to the cleaning device for the solar photovoltaic cell assemblies, the surfaces of the photovoltaic cell assemblies are softly covered with water mist, the structure is simple, the manufacturing cost is low, the device reliability is high, the large-area photovoltaic cell assemblies and the photovoltaic cell assemblies installed on the uneven ground can be automatically cleaned, electric energy losses, caused by dust covering, of the photovoltaic cell assemblies are reduced, the production efficiency of the photovoltaic cell assemblies is improved, damage to the surfaces of the photovoltaic cell assemblies is avoided, the service life is not influenced, and the cleaning device is suitable for application and popularization and high in working efficiency particularly for large-scale grid-connection type photovoltaic generating stations.

Description

A solar photovoltaic cell module cleaning device

technical field

The invention relates to the technical field of photovoltaic power generation, in particular to a cleaning device for solar photovoltaic cell components.

Background technique

The basic principle of photovoltaic power generation is the "photovoltaic effect". When a photon irradiates a metal, its energy can be completely absorbed by an electron in the metal. The energy absorbed by the electron is large enough to overcome the internal gravitational force of the metal to do work, escape from the metal surface, and become a photoelectron. The greater the amount of solar radiation received by the photovoltaic cell module, the higher the power generation of the system. The surface of the battery panel is smooth and clean. There are a lot of dust and debris in the atmospheric environment, which are very easy to adhere to the surface of the battery panel. When the impurities accumulate for a long time, the power generation efficiency of the battery panel will be greatly reduced. Research by NASA shows that a dust layer of only 4.05 grams per square meter can reduce solar energy conversion by 40%, especially in northern areas with poor surface vegetation coverage and high solar radiation intensity. If manual cleaning is carried out, it is difficult and expensive. The papers of two domestic research institutes show that in the test of the 2MW power station in Bengbu, Anhui, the accumulated dust for 20 days has affected the power generation by 24%. 25%.

Therefore, in view of the above situation, a solar panel cleaning device has appeared, through automatic control, the dust on the solar panel is automatically removed, the working efficiency of the solar panel is improved, and the power loss caused by the dust coverage of the solar panel is reduced. At present, this type of automatic cleaning device has a complex structure, many transmission mechanism parts, and high manufacturing cost, so it is not easy to use in a large area.

In the utility model patent with the application number 201020101440.3, an automatic dust removal device for solar panels is disclosed: the solar panel is installed in a fixed bracket, the fixed bracket adopts a rectangular or square frame, and the two ends of the dust scraping device are installed on symmetrical linear motors , the linear motor is placed on the parallel magnetic rails above the two sides of the fixed bracket. When the dust removal device starts to work, the drive module drives two linear motors to act simultaneously to drive the dust scraping device to move. The dust scraping device adopts flexible rubber dust scraping blades. Position sensors are installed at both ends of the fixed bracket. When the dust scraping device reaches one end of the battery board, the position sensor transmits a signal to make the dust scraping device move in the opposite direction. Driven by the driving device, the scraping device completes the cleaning of the surface of the battery panel through reciprocating motion.

This utility model has following shortcoming:

The fixed bracket adopts a frame structure, and the battery board is installed in the fixed bracket. If the dust removal device is installed on the installed battery board, a single or a small number of battery boards is more suitable, and a large area and a large number of battery boards are installed. difficulty. The dust scraping device is made of flexible rubber. In areas with poor environmental conditions, the rubber is prone to aging, which greatly affects the cleaning of the battery board.

Simultaneously, this utility model can only be adapted to the cleaning of a small-area single battery board, and cannot realize the cleaning of a large-area battery board. In addition, because the utility model adopts the reciprocating action of the rubber strip to scrape dust, when there is grit on the surface of the battery board, it will damage the surface glass of the photovoltaic cell module and affect the service life of the battery board.

In the utility model patent with application number 201220009745.0, an automatic dust removal device for solar panels is disclosed: the cleaning and dust removal device includes an up and down moving device, a liftable device, and a water storage tank, and the up and down moving device includes an adjustable angle cleaning head and a cleaning head bracket , motor and linear guide rail, one end of the cleaning head bracket is connected to the adjustable angle cleaning head, the other end is connected to the linear guide rail, the lifting device is connected to the up and down moving device, the lifting device is connected to the water storage tank, and a DC high-pressure water pump is installed inside the water storage tank , the liftable device includes a telescopic water pipe, the upper end of the telescopic water pipe communicates with the angle-adjustable cleaning head, and the lower end of the telescopic water pipe connects with the DC high-pressure water pump. When the dust removal starts, the lifting device will raise the adjustable angle cleaning head to the specified height, the adjustable angle cleaning head will fit the battery board, the high-pressure water pump will start to operate, and the water in the water storage tank will be ejected, and the adjustable angle cleaning head will pass through Clean by moving up and down the panel.

This utility model is mainly aimed at solar street lamps and wall panel components, and can only be adapted to clean a small-area single panel. For large-scale grid-connected photovoltaic power stations, the work efficiency is low and it is not suitable for large-scale use. At the same time, the lifting device and the up and down moving device are easy to enter the sand and gravel in the windy and sandy area in the northwest, causing sticking and reducing the reliability of the equipment.

It can be seen that the above-mentioned existing solar photovoltaic cell module cleaning device obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently. How to create a cleaning device that has a simple structure, can be used in a large area and does not damage the surface of battery components has become a goal that needs to be improved in the current industry.

Contents of the invention

The object of the present invention is to overcome the shortcomings and deficiencies of the above-mentioned prior art, and provide a solar photovoltaic cell component cleaning device with simple structure, large-area use and no damage to the surface of the cell component.

To achieve the above object, the present invention adopts the following technical solutions:

A solar photovoltaic cell component cleaning device, comprising a high-pressure water supply device, a high-pressure water supply pipe connected to the high-pressure water supply device, and a plurality of atomization devices connected to the high-pressure water supply pipe; the atomization device is installed on the photovoltaic cell assembly along the office.

Further, the atomization device includes an atomization nozzle and a pressure telescopic water pipe, the atomization nozzle is installed at the end of the pressure telescopic water pipe, and the pressure telescopic water pipe can be ejected from the side wall of the high-pressure resistant water pipe; The upper edge of the battery pack is fixed.

Further, the pressure telescopic water pipe is raised by 10-15 cm according to the water pressure.

Further, the spray coverage diameter of the atomizing nozzle is 80-120cm.

Further, the atomization device adopts the form of a rotating spray head.

Further, the high-pressure water delivery pipe is fixed on the upper edge of the photovoltaic cell module through a pipe holder, and the pipe holder is clamped with upper and lower screws.

Further, the high-pressure resistant water pipe has multiple sections, and adjacent sections are connected by connecting units.

Further, the high-pressure water supply device includes a water storage tank and a high-pressure water pump communicated with the water storage tank, and the high-pressure water pump communicates with a high-pressure resistant water delivery pipe.

Further, the photovoltaic cell assembly is a photovoltaic cell assembly for a photovoltaic power station.

Compared with the prior art, the present invention has the following beneficial effects:

1. Multiple atomization devices are installed on the top of the photovoltaic cell module. The water mist sprayed by the atomization device can cover the surface of the photovoltaic cell module softly, and will not damage the surface glass of the photovoltaic cell module due to excessive water pressure. Other cleaning 1. The cleaning method is to directly contact the surface glass of the photovoltaic cell module with cotton cloth, rubber and other substances, and at the same time complete the cleaning through rapid displacement. It is difficult to ensure that the surface glass of the photovoltaic cell module will not be damaged. Uneven PV modules.

2. The water mist sprayed by the atomizing device covers evenly, and a single atomizing device can form a large washing area, and the irradiance of the photovoltaic cell module will not decrease due to the omission of washing.

3. Since the cleaning water is sprayed out by the atomizing device, the structure of the water body is fine, and the cleaning water can be efficiently fused with the dust on the surface of the photovoltaic cell module, improving water efficiency and saving cleaning water.

4. The pipe holder is clamped with upper and lower screws, which will not damage the frame structure of the photovoltaic cell module and ensure the structural stability of the photovoltaic cell module.

5. The high-pressure water delivery pipe can be divided into multiple sections according to the size of the photovoltaic cell module, and the setting is reasonable.

6. The present invention has a simple structure, and is especially suitable for cleaning large-area photovoltaic cell components, such as photovoltaic power stations, and improves the production efficiency of components.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure and installation of a solar photovoltaic cell module cleaning device according to the present invention.

Detailed ways

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

As shown in Fig. 1, a kind of solar photovoltaic cell module cleaning device of the present invention comprises water storage tank 1, high-pressure water pump 2, high-pressure resistant water delivery pipe 3, atomization device 4; Wherein, high-pressure water pump 2 is placed in water storage tank 1 and Connected with it, the two form a high-pressure water supply device. The high-pressure water pump 2 communicates with the high-pressure water pipe 3 , and there are multiple atomization devices 4 , all of which communicate with the high-pressure water pipe 3 , and the multiple atomizers 4 are installed on the upper edge of the photovoltaic cell assembly 100 .

The working principle of the present invention is that high-pressure water is sprayed through the atomizing device 4 installed on the upper edge of the photovoltaic cell assembly 100, and the sprayed water mist can softly cover the surface of the photovoltaic cell assembly 100. After the water mist is sprayed for a certain period of time, it will A water flow is formed to wash the surface of the module from top to bottom to clean the dust attached to the surface of the module. The whole process does not need to move the atomization device 4 up and down along the photovoltaic cell module 100, and the atomization device 4 does not need to be attached to the surface of the photovoltaic cell module 100. It will cause damage to the surface of the photovoltaic cell module 100 .

Wherein, in order to form soft mist, the atomizing device 4 can adopt the following structural forms:

First form:

The atomizing device 4 includes an atomizing nozzle and a pressure telescopic water pipe, the atomizing nozzle is installed at the end of the pressure telescopic water pipe, and the pressure telescopic water pipe can be ejected from the side wall of the high pressure resistant water pipe 3; The upper edge of the photovoltaic cell assembly 100 is fixed so that the atomizing device 4 is installed on the upper edge of the photovoltaic cell assembly 100 .

During specific work, the high-pressure water pump 2 built in the water storage tank 1 pumps the water in the water storage tank 1 into the high-pressure water delivery pipe 3, and then it is input into the whole set of water pipe network through the water delivery pipe. When the pressure reaches the working pressure , the water pressure pushes out the pressure telescopic water pipe from the side wall of the high pressure water pipe 3, and the pressure telescopic water pipe rises by about 10-15 cm according to the water pressure. At the same time, the water in the high pressure water pipe 3 passes through the pressure telescopic water pipe and fog spray out from the spray nozzle to form a water mist covering a diameter of 80-120 cm, covering the photovoltaic cell module 100. When the water mist on the upper end of the photovoltaic cell module 100 is sprayed for about 1 minute, a water flow will be formed to scour the surface of the module from top to bottom, cleaning the dust attached to the surface of the module.

The second form: the atomization device adopts the form of a rotating nozzle, that is, through rotation, it can also meet the needs of water mist cleaning.

Certainly, the above-mentioned high-pressure resistant water delivery pipe 3 can be fixed on the upper edge of the photovoltaic cell module 100 through the pipe holder 5, and the pipe holder 5 is clamped by upper and lower screws. Through the arrangement of this structure, the frame structure of the photovoltaic cell assembly 100 will not be damaged, and the structural stability of the photovoltaic cell assembly 100 is ensured.

In order to adapt to the cleaning of photovoltaic cell modules with a larger area, the high-pressure water delivery pipe 3 can be reasonably arranged in multiple sections, and adjacent sections are connected by connecting units 6 .

To sum up, the solar photovoltaic cell module cleaning device of the present invention has simple structure, low manufacturing cost, high equipment reliability, can complete the automatic cleaning of photovoltaic cell modules with large areas and uneven surfaces, and reduces the dust caused by photovoltaic cell modules. It can cover the power loss caused by covering, improve the production efficiency of photovoltaic cell components, and has no damage to the surface of photovoltaic cell components, and does not affect its service life. It is suitable for popularization and application, especially for large-scale grid-connected photovoltaic power stations. higher.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions described in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. A solar photovoltaic cell assembly cleaning device is characterized in that it comprises a high-pressure water supply device, a high-pressure water supply pipe communicated with the high-pressure water supply device, and a plurality of atomization devices communicated with the high-pressure water supply pipe; the atomization device is installed At the upper edge of the photovoltaic cell module. 2. The solar photovoltaic cell module cleaning device according to claim 1, wherein the atomization device comprises an atomization nozzle and a pressure telescopic water pipe, and the atomization nozzle is installed at the end of the pressure telescopic water pipe, and the pressure telescopic water pipe can be controlled by The side wall of the high pressure water pipe is ejected; The high-pressure resistant water pipe is fixed along the upper edge of the photovoltaic cell assembly. 3. The solar photovoltaic cell module cleaning device according to claim 2, characterized in that the pressure telescopic water pipe is raised by 10-15 cm according to the water pressure. 4. The solar photovoltaic cell module cleaning device according to claim 2, characterized in that, the spray coverage diameter of the atomizing nozzle is 80-120cm. 5 . The solar photovoltaic cell module cleaning device according to claim 1 , wherein the atomization device is in the form of a rotating spray head. 6 . 6 . The solar photovoltaic cell module cleaning device according to claim 1 , wherein the high-pressure water delivery pipe is fixed on the upper edge of the photovoltaic cell module by a pipe holder, and the pipe holder is clamped by upper and lower screws. 7 . 7. The cleaning device for solar photovoltaic cell modules according to claim 1, characterized in that, the high-pressure resistant water delivery pipe has multiple sections, and adjacent sections are connected by connecting units. 8 . The solar photovoltaic cell module cleaning device according to claim 1 , wherein the high-pressure water supply device comprises a water storage tank and a high-pressure water pump connected to the water storage tank, and the high-pressure water pump is connected to a high-pressure resistant water delivery pipe. 9. The solar photovoltaic cell assembly cleaning device according to any one of claims 1-8, characterized in that, the photovoltaic cell assembly is a photovoltaic cell assembly for a photovoltaic power station.