CN209969000U

CN209969000U - A clean mechanism for photovoltaic array

Info

Publication number: CN209969000U
Application number: CN201920843797.XU
Authority: CN
Inventors: 吴海涛; 程琳淞; 黄江波
Original assignee: Yangtze Normal University
Current assignee: Yangtze Normal University
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2020-01-21
Anticipated expiration: 2029-06-05

Abstract

The utility model discloses a clean mechanism for photovoltaic array, it is in including clean subassembly and setting to clean the suction hood of subassembly both sides, clean subassembly include the round brush and with the round brush is connected and can be driven round brush pivoted second motor, the suction hood towards a plurality of dust sunction inlets have been seted up to one side of clean subassembly, a plurality of air outlets have been seted up to the opposite side of suction hood the dust sunction inlet with vertical being provided with between the air outlet filters the stratum reticulare still be equipped with in the suction hood can produce the negative pressure and make the air current follow in the suction hood the dust sunction inlet flow direction the vacuum device of air outlet. The cleaning mechanism can clean the surface of the photovoltaic array and can also avoid secondary pollution to the photovoltaic array caused by the cleaned dust.

Description

A clean mechanism for photovoltaic array

Technical Field

The utility model relates to a solar photovoltaic technology field, concretely a clean mechanism for photovoltaic array.

Background

Solar energy is one of the important forms of clean new energy utilization, and photovoltaic power generation is a main way of acquiring electric energy by utilizing solar energy and is also an important way for solving energy requirements. The cell slice made of semiconductor silicon is the most basic unit of the solar cell and is a core component for realizing the photovoltaic effect. In actual production and manufacture, a certain number of single battery pieces are connected in series or in parallel and then sealed to form an integral photovoltaic module. The photovoltaic module is formed by sealing a multilayer structure, and the uppermost layer is high-transmittance low-iron tempered glass (the average visible light transmittance is more than or equal to 92 percent) which plays a role in transmitting light and protecting a cell; the middle layer consists of polymer EVA (ethylene-vinyl acetate copolymer) and a silicon cell slice, and the EVA polymer wraps the cell slice to play a further role in protection; the lowermost layer consists of an alloy composite film TPT with the performances of ageing resistance, corrosion resistance, electric insulation and the like; the photovoltaic module frame made of the aluminum alloy plays a role in protecting the whole module.

The index for evaluating the performance of the photovoltaic module is the photoelectric conversion efficiency, factors influencing the photoelectric conversion efficiency are various, and the conversion efficiency is influenced by the environmental factors such as surface dust deposition, the working temperature of the module, the solar irradiation intensity and the like of the photovoltaic module only by analyzing from the environmental angle. The surface dust deposition reduces the power generation efficiency mainly because the dust deposition can reduce the sunlight transmittance, the dust deposition phenomenon on the surface of the photovoltaic module has great influence on the photoelectric conversion efficiency of the photovoltaic module, and the 'hot spot effect' caused by local shadow can seriously damage the module. According to investigation, manual cleaning is the main mode of cleaning dust of the photovoltaic module at present, and the method is a good choice for courtyard type small photovoltaic power stations; however, for large photovoltaic arrays or photovoltaic power stations, the labor cost and water resource consumption caused by manual cleaning are burdensome. Therefore, how to design a cleaning mechanism capable of cleaning dust on the surface of the photovoltaic array becomes a problem to be solved urgently.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the to-be-solved technical problem of the utility model is: how to provide a sweeping mechanism for a photovoltaic array, which can clean dust on the surface of the photovoltaic array.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a clean mechanism for photovoltaic array, clean the mechanism including clean subassembly and setting up the suction hood in clean subassembly both sides, clean subassembly include the round brush and with the round brush is connected and can drive the round brush pivoted second motor, the suction hood towards one side of clean subassembly has seted up a plurality of dust sunction inlets, a plurality of air outlets have been seted up to the opposite side of suction hood the dust sunction inlet with vertically be provided with between the air outlet and filter the stratum reticulare, still be equipped with in the suction hood can produce the negative pressure and make the air current follow in the suction hood the dust sunction inlet flow direction the negative pressure device of air outlet.

Like this, clean the mechanism when cleaning photovoltaic array surface, the second motor drives the round brush rotation, the round brush then carries out cleaning to photovoltaic array's surface, the dust that the round brush was swept up at clean in-process is in the dust suction inlet of the clean subassembly both sides suction hood of suction under negative pressure device's effect, the dust that is inhaled into the dust suction inlet is through filtering the stratum reticulare, filter the stratum reticulare and stop the dust in the inside of suction hood, last clean air is discharged from air outlet department, the secondary pollution that the dust that the round brush was swept up produced photovoltaic array surface has been prevented, this scheme only need start the second motor from this, the second motor then drives the round brush rotation and realizes cleaning photovoltaic array surface dust, so this scheme can clean photovoltaic array surface's dust, simultaneously can also avoid the secondary pollution that the dust after cleaning brought photovoltaic array.

Preferably, the air outlet of the dust hood is further provided with an air suction opening and a vertical air suction pipe which can generate negative pressure under the action of the negative pressure device, the air suction opening and the air outlet are respectively located on two axial sides of the air suction pipe and are communicated with the air suction pipe, and the opening of the air suction opening faces the dust suction inlet.

Therefore, when the surface of the photovoltaic array is cleaned by the cleaning mechanism, the negative pressure device is started, the negative pressure device enables negative pressure to be generated in the exhaust pipe, air with dust is sucked from the dust suction inlet under the action of the negative pressure, and finally discharged from the air outlet after passing through the air suction inlet.

Preferably, the filter screen layer comprises a first filter screen and a second filter screen which are vertically arranged in parallel, and a gap is formed between the first filter screen and the second filter screen.

Like this, through setting up first filter screen and second filter screen, can realize the secondary filter to the air that has the dust, improve the effect of coming to the dust.

Preferably, the dust suction inlet and the air outlet are uniformly distributed along the length direction of the rolling brush.

Therefore, dust along the length direction of the roller brush can be effectively sucked into the dust hood.

Preferably, the number of the rolling brushes is three, and the dust collection covers are obliquely arranged on two sides of the rolling brushes at two ends.

Like this, three round brush has bigger area of contact with photovoltaic array's surface, and the round brush can once only clean the photovoltaic array surface of bigger area promptly, the effectual cleaning efficiency who improves the round brush, simultaneously with the setting of suction hood slope in the both sides of both ends round brush, the setting of slope makes the suction hood can inhale the dust that the round brush in the wider range swept.

Preferably, the first filter screen and the second filter screen are both of a concave-convex honeycomb structure.

Like this, concave-convex's honeycomb structure makes first filter screen and second filter screen and dust have bigger area of contact, has improved the filter effect of first filter screen and second filter screen to the dust.

Preferably, a plurality of nylon brush heads are arranged on the surface of the rolling brush.

Therefore, the nylon brush head has good cleaning effect and low use cost, and is easy to clean.

Preferably, the negative pressure device is a fan.

Therefore, the effect of negative pressure is realized by utilizing the rotation of the fan, the effect is good, and the cost is low.

Drawings

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of the suction hood of FIG. 1;

fig. 3 is a schematic structural view of one specific application of the cleaning mechanism of the present invention;

description of reference numerals: the device comprises a support 10, a rolling brush 11, a dust hood 12, a dust suction inlet 13, a filter screen layer 14, a suction inlet 15, an exhaust pipe 16 and an air outlet 17.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, a cleaning mechanism for a photovoltaic array includes a cleaning assembly and a dust hood 12 disposed at two sides of the cleaning assembly, the cleaning assembly includes a roller brush 11 and a second motor connected to the roller brush 11 and capable of driving the roller brush 11 to rotate, one side of the dust hood 12 facing the cleaning assembly is provided with a plurality of dust suction ports 13, the other side of the dust hood 12 is provided with a plurality of air outlets 17, a filter screen layer 14 is vertically disposed between the dust suction ports 13 and the air outlets 17, and a negative pressure device capable of generating negative pressure in the dust hood 12 and making air flow from the dust suction ports 13 to the air outlets 17 is further disposed in the dust hood 12.

Like this, when cleaning mechanism 1 cleans the photovoltaic array surface, second motor drives round brush 11 and rotates, round brush 11 then cleans the surface of photovoltaic array, the dust that round brush 11 was swept up in the cleaning process is inhaled in the dust sunction inlet 13 of clean subassembly both sides suction hood 12 under negative pressure device's effect, the dust that is inhaled into dust sunction inlet 13 passes through filter screen layer 14, filter screen layer 14 blocks the dust in the inside of suction hood 12, clean air is discharged from air outlet 17 at last, the secondary pollution of dust that round brush 11 was swept up to the photovoltaic array surface production has been prevented, thereby realized the cleanness to the photovoltaic array surface, can also avoid the secondary pollution that the cleaned dust brought the photovoltaic array simultaneously.

In this embodiment, an air suction opening 15 and an air exhaust duct 16 that is vertically disposed and can generate negative pressure under the action of a negative pressure device are further disposed at an air outlet 17 of the dust hood 12, the air suction opening 15 and the air outlet 17 are respectively located at two axial sides of the air exhaust duct 16 and are both communicated with the air exhaust duct 16, and an opening of the air suction opening 15 faces the dust suction opening 13.

Thus, when the cleaning mechanism 1 cleans the surface of the photovoltaic array, the negative pressure device is started, the negative pressure device generates negative pressure in the exhaust pipe 16, and under the action of the negative pressure, air with dust is sucked in from the dust suction inlet 13, passes through the air suction inlet 15 and is finally discharged from the air outlet 17.

In this embodiment, the filter screen layer 14 includes a first filter screen and a second filter screen which are vertically arranged in parallel, and a gap is formed between the first filter screen and the second filter screen.

In the present embodiment, the dust suction inlet 13 and the air outlet 17 are uniformly distributed along the length direction of the roll brush 11.

Thus, dust along the length of the roller brush 11 can be effectively sucked into the dust hood 12.

In this embodiment, three rolling brushes 11 are arranged in parallel, and the dust collection cover 12 is obliquely arranged on both sides of the rolling brushes 11 on both ends.

Like this, three round brush 11 has bigger area of contact with photovoltaic array's surface, and the round brush 11 can once only clean the photovoltaic array surface of bigger area promptly, the effectual cleaning efficiency who improves round brush 11, simultaneously with the setting of suction hood 12 slope in the both sides of both ends round brush 11, the setting of slope makes suction hood 12 can inhale the dust that the round brush 11 in the wider range swept.

In this embodiment, the first filter screen and the second filter screen are both of a concave-convex honeycomb structure.

In this embodiment, the surface of the roller brush 11 is provided with a plurality of nylon brush heads.

In this embodiment, the negative pressure device is a fan.

Fig. 3 is a schematic structural diagram of one specific application of the cleaning device in the present embodiment, in the specific application, a support 10 is disposed on the cleaning device, and then the cleaning device acts on the support 10 by a mechanical arm or the like, after the cleaning device finishes cleaning dust on the surface of the photovoltaic array in the area, the mechanical arm acts on the support 10, and the cleaning device is moved by the movement of the mechanical arm to a position where dust cleaning is not performed on the surface of the photovoltaic array, so as to clean the surface of the photovoltaic array at different positions.

Finally, it is noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. The cleaning mechanism for the photovoltaic array is characterized by comprising a cleaning component and dust hoods arranged on two sides of the cleaning component, wherein the cleaning component comprises a rolling brush and a second motor which is connected with the rolling brush and can drive the rolling brush to rotate, one side of each dust hood facing the cleaning component is provided with a plurality of dust suction inlets, the other side of each dust hood is provided with a plurality of air outlets, a filter screen layer is vertically arranged between each dust suction inlet and the corresponding air outlet, and a negative pressure device which can generate negative pressure in each dust hood and enable air flow to flow from the corresponding dust suction inlet to the corresponding air outlet is further arranged in each dust hood.

2. The cleaning mechanism for the photovoltaic array as claimed in claim 1, wherein an air outlet of the dust hood further has an air suction opening and an air exhaust pipe vertically disposed and capable of generating negative pressure under the action of the negative pressure device, the air suction opening and the air outlet are respectively located at two axial sides of the air exhaust pipe and are both communicated with the air exhaust pipe, and an opening of the air suction opening faces the dust suction inlet.

3. The cleaning mechanism for the photovoltaic array as claimed in claim 1, wherein the filter screen layer comprises a first filter screen and a second filter screen which are vertically arranged in parallel, and a gap is formed between the first filter screen and the second filter screen.

4. The cleaning mechanism for a photovoltaic array as claimed in claim 1, wherein the dust suction inlet and the air outlet are uniformly distributed along the length direction of the roller brush.

5. The sweeping mechanism for a photovoltaic array as claimed in claim 1, wherein the number of the rolling brushes is three, and the dust hood is obliquely disposed at both sides of the rolling brushes.

6. The cleaning mechanism for a photovoltaic array as recited in claim 3, wherein the first filter and the second filter are both of a concave-convex honeycomb structure.

7. A sweeping mechanism for a photovoltaic array as set forth in claim 1, wherein a surface of said roller brush is provided with a plurality of nylon brush heads.

8. A sweeping mechanism for a photovoltaic array as set forth in claim 1 wherein said negative pressure device is a fan.