Solar photovoltaic integrated self-cleaning support

Abstract

The invention discloses a solar photovoltaic integrated self-cleaning support, and relates to the technical field of solar photovoltaics. The photovoltaic support comprises a support base and a photovoltaic panel located on the support base. Two adjacent photovoltaic panels are fixed on the support foundation through a track, a cleaning device is matched between two adjacent tracks, a spraying pipe is fixed at the top of the track and penetrates through the top of the whole support foundation, one end part of the spraying pipe is connected with a spraying system device, and the spraying pipe sprays cleaning liquid on the surfaces of the photovoltaic panels. The photovoltaic panel can be regularly cleaned by adopting the integrated self-cleaning bracket, dust and dirt on the surface of the photovoltaic panel can be thoroughly removed, so that the power generation efficiency is improved, no pressure damage is caused to the surface of the photovoltaic panel, water stains on the surface of the photovoltaic panel can be removed, and the brush made of a flexible dust-resistant material is adopted, so that the cleaning efficiency is improved. And dirt on the photovoltaic panel is cleaned through high-speed rotation.

Description

Technical Field

[0001] The invention belongs to the technical field of solar photovoltaic technology, and in particular relates to a solar photovoltaic integrated self-cleaning bracket. Background Art

[0002] Photovoltaic panels are an important part of the solar power generation system, and their cleanliness directly affects the power generation efficiency and lifespan. Dust pollution, industrial dust, etc. will lead to reduced output power, increased heat transfer resistance, affected heat dissipation, acidic and alkaline dust corroding the glass surface, etc. Therefore, regular cleaning of photovoltaic panels is an important part of maintaining the efficient operation of the photovoltaic system.

[0003] The clean water flushing method is the simplest and most common cleaning method. It only requires the use of clean water or tap water to flush the photovoltaic panel, which can effectively remove the dust and some stains on the surface. This method is suitable for photovoltaic panels with less dust accumulation and low pollution. The detergent method can remove most stains and dust, especially for some stains that are difficult to remove with clean water.

[0004] Currently, manual cleaning is the main method, but there are certain safety risks in the operation space. Workers usually use long-handled velvet mops with special dust removers to remove floating dust on the surface of the components. Its working principle is based on electrostatic adsorption, which can effectively absorb dust and sand to prevent dust from flying during cleaning. However, due to the different operating forces of different workers, excessive pressure may be applied to the components, causing component deformation or hidden cracks in the battery cells. At the same time, the dust on the mop may also leave marks on the surface of the component, forming a shadow.

[0005] There is also a manual water washing method, which uses vehicles with water storage functions, such as water tank tractors or sprinkler trucks, and low-pressure nozzles for cleaning. Although the cost is relatively low, the operation requires two people to cooperate, and there is a risk of hidden cracks in the battery cells due to improper water pressure control. In addition, after washing, the components will dry on their own, and water stains may be left on the surface, forming micro-shadows. Summary of the invention

[0006] The purpose of the present invention is to provide a solar photovoltaic integrated self-cleaning bracket, which solves the existing problems of high manual cleaning costs and damage to photovoltaic panels by coordinating a cleaning device and a spray system between two adjacent tracks and spraying and cleaning the surface of the photovoltaic panel regularly.

[0007] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The present invention is a solar photovoltaic integrated self-cleaning bracket, comprising a bracket base and a photovoltaic panel located on the bracket base; two adjacent photovoltaic panels are fixed to the bracket base through a track, a cleaning device is provided between the two adjacent tracks, and a spray pipe is fixed on the top of the track.

[0009] Furthermore, the support foundation includes a plurality of longitudinal beams and a plurality of transverse beams, and the transverse beams are fixed on the longitudinal beams.

[0010] Furthermore, the cross beam is a hot-dip galvanized C-shaped channel steel, and the ends of two adjacent cross beams are fixed by a U-shaped purlin connector.

[0011] Furthermore, the track includes a T-shaped guide bar and a U-shaped guide bar, and a pressure plate is respectively arranged on both sides of the U-shaped guide bar; the T-shaped guide bar is located at the center of the U-shaped guide bar.

[0012] Furthermore, the cleaning device includes a group of fixed frames and a roller brush, both ends of the roller brush are fixed to the group of fixed frames through bearings, a first motor and a second motor are fixed on a fixed frame, and a group of wheels are also arranged on the fixed frame, the first motor is connected to one end of the roller brush through a coupling; one of the wheels is fixed on the output shaft of the second motor; and a guide wheel group that slides with the track is also arranged on the outer side of the fixed frame.

[0013] Furthermore, the guide wheel group includes a first guide wheel matched with the T-shaped guide bar and a second guide wheel matched with the U-shaped guide bar.

[0014] Furthermore, the two fixing frames are fixed via a cross bar.

[0015] Furthermore, a rubber strip is fixed on the crossbar and fits the surface of the photovoltaic panel.

[0016] Furthermore, a pipe bracket is fixed to one end of the track, and a metal mesh plate is fixed to the other end of the track.

[0017] Furthermore, the spray pipe runs through the top of the entire support foundation, and one end of the spray pipe is connected to a spray system device, and the spray pipe sprays cleaning liquid on the surface of the photovoltaic panel.

[0018] The present invention has the following beneficial effects:

[0019] The present invention can regularly clean the photovoltaic panels by adopting an integrated self-cleaning bracket, thoroughly remove dust and dirt on the surface of the photovoltaic panels to improve power generation efficiency, without causing pressure damage to the surface of the photovoltaic panels, and can remove water stains on the surface of the photovoltaic panels. A brush made of flexible dust-repellent material is used to clean dirt on the photovoltaic panels through high-speed rotation.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 This is a schematic structural diagram of a solar photovoltaic integrated self-cleaning bracket of this embodiment;

[0023] Figure 2 for Figure 1 A top view of the structure;

[0024] Figure 3 It is a structural schematic diagram of the support foundation;

[0025] Figure 4 is a schematic diagram of the track structure;

[0026] Figure 5 for Figure 4 A side view of the structure;

[0027] Figure 6 is a schematic diagram of the structure of the cleaning device;

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1- bracket foundation, 2- photovoltaic panel, 3- track, 4- spray pipe, 5- cleaning device, 101- cross beam, 301- T-shaped guide strip, 302- U-shaped guide strip, 303- pressure plate, 501- fixed frame, 502- roller brush, 503-, 504- first motor, 505- second motor, 506- wheel, 507- second guide wheel, 508- first guide wheel, 509- rubber strip. DETAILED DESCRIPTION

[0030] 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 utility model / invention, rather than all 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.

[0031] The cost of photovoltaic cleaning is calculated based on the reference quota for component cleaning, that is, a worker uses ordinary methods (such as using rags and mops) to complete a cleaning area of ​​about 800 to 1,000 square meters per day. The cost is about 250 yuan (of which the worker's salary is 200 yuan, and the rest is miscellaneous expenses, such as equipment consumption, etc.). That is, the cost of cleaning photovoltaic components per square meter is 0.2 to 0.3 yuan each time, which is converted into a photovoltaic cleaning cost of about 1 to 2 yuan per kilowatt, that is, the cleaning cost per megawatt is 1,000 to 2,000 yuan. This cost is a direct cost, excluding freight, water charges, etc., which is only a part of the direct cost. Based on this, the cost of solar photovoltaic cleaning will increase or decrease according to the actual situation. For particularly dirty panels, such as those with industrial pollution such as rust, the cleaning cost will increase a lot.

[0032] Example 1

[0033] like Figure 1 and Figure 2 As shown, this embodiment is a solar photovoltaic integrated self-cleaning bracket, including a bracket base 1 and photovoltaic panels 2 located on the bracket base 1 to form a solar cell module array; two adjacent photovoltaic panels 2 are fixed on the bracket base 1 through a track 3, and a cleaning device 5 is provided between the two adjacent tracks 3. A spray pipe 4 is fixed on the top of the track 3. Water or cleaning agent is sprayed on the panel surface of the solar cell module array through the spray pipe 4 through the spray system, and then each group of longitudinal photovoltaic panels 2 is cleaned by moving the cleaning device 5 up and down.

[0034] like Figure 3 As shown, the support foundation 1 includes a plurality of longitudinal beams and a plurality of transverse beams 101, and the transverse beams 101 are fixed on the longitudinal beams. The transverse beams 101 are hot-dip galvanized C-shaped channel steels, and the ends of two adjacent transverse beams 101 are fixed by a U-shaped purlin connector. Positioning holes for fixing the transverse beams 101 are opened on the longitudinal beams, and they are fixed by bolts. The support foundation 1 adopts a tiltable angle design. The specific support structure part adopts the structure disclosed in the patent publication (announcement) number CN118971758A.

[0035] like Figure 4 As shown, the track 3 includes a T-shaped guide bar 301 and a U-shaped guide bar 302, and a pressing plate 303 is respectively arranged on both sides of the U-shaped guide bar 302; the T-shaped guide bar 301 is located at the center of the U-shaped guide bar 302, and the photovoltaic panel 2 is fixed to the crossbeam 101 through the pressing plate 303 arranged on the track 3, and a plurality of waist-shaped holes are arranged side by side along the axial direction on the U-shaped guide bar 302, and the track 3 is fixed to the crossbeam 101 through bolts. In order to enhance the stability of the fixation of the photovoltaic panel 2, a knurled groove can also be arranged on the surface of the pressing plate 303.

[0036] like Figure 6As shown, the cleaning device 5 includes a set of fixed frames 501 and a roller brush 502, both ends of the roller brush 502 are connected to the set of fixed frames 501 through bearings, a first motor 504 and a second motor 505 are fixed to one fixed frame 501, and a set of wheels 506 are also arranged on the fixed frame 501, the first motor 504 is connected to one end of the roller brush 502 through a coupling; a wheel 506 is fixed to the output shaft of the second motor 505; and a guide wheel group that is slidably matched with the track 3 is also arranged on the outer side of the fixed frame 501. The fixed frame 501 adopts a metal shell structure, and the two fixed frames 501 are fixed by a cross bar 503.

[0037] The guide wheel group includes a first guide wheel 508 matched with the T-shaped guide bar 301 and a second guide wheel 507 matched with the U-shaped guide bar 302. The guide wheel group rolls in the track 3, and the cleaning device 5 is limited to move left and right through the two tracks 3, so that the wheel 506 of the cleaning device 5 can move stably on the pressure plate 303. The first guide wheel 508 and the second guide wheel 507 are both rubber wheels.

[0038] A pipe bracket is fixed at one end of the track 3, and a metal mesh is fixed at the other end of the track 3. The spray pipe 4 runs through the top of the entire support base 1, and the spray pipe 4 is fixed by the pipe bracket. One end of the spray pipe 4 is connected to a spray system device, and the spray pipe 4 sprays cleaning liquid on the surface of the photovoltaic panel 2.

[0039] The spray system device includes a water tank, a high-pressure atomizer, a spray pipe 4 and a pipeline. Atomizing nozzles or nozzles are arranged side by side on the spray pipe 4. The water in the water tank reaches high pressure through the high-pressure atomizer and then sprays out atomized water or water flow through the spray pipe 4 for spraying and cleaning the surface of the photovoltaic panel 2.

[0040] Example 2, based on Example 1

[0041] A rubber strip 509 in contact with the surface of the photovoltaic panel 2 is also fixed on the crossbar 503 to scrape away water stains on the photovoltaic panel 2 during the movement of the cleaning device 5, thereby removing water stains on the surface of the photovoltaic panel 2 and keeping the surface of the photovoltaic panel 2 clean.

[0042] Example 3, based on Example 1

[0043] Two adjacent cleaning devices 5 can also be connected in series through a connecting rod, so that the entire solar cell assembly array can be cleaned at the same time, reducing the drive of the second motor 505 on each cleaning device 5, saving electricity, and when moving at the same time, at least three or more second motors 505 are required to drive, which can effectively reduce electricity costs.

[0044] Example 4, based on Example 1

[0045] The track 3 is made of metal sheet, which plays the role of track on the one hand, and plays the role of fixing the photovoltaic panel on the other hand. Figure 5 As shown, the T-shaped guide bar 301 is located at the center of the U-shaped guide bar 302, and the longitudinal plate of the T-shaped guide bar 301 is fixed to the inner center of the U-shaped guide bar 302, thereby forming a process for limiting the guide wheel group.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A solar photovoltaic integrated self-cleaning bracket, characterized in that: The invention comprises a support base (1) and a photovoltaic panel (2) located on the support base (1); two adjacent photovoltaic panels (2) are fixed on the support base (1) via a track (3); a cleaning device (5) is provided between the two adjacent tracks (3); and a spray pipe (4) is fixed on the top of the track (3).

2. A solar photovoltaic integrated self-cleaning bracket as claimed in claim 1, characterized in that: The support foundation (1) comprises a plurality of longitudinal beams and a plurality of transverse beams (101), wherein the transverse beams (101) are fixed on the longitudinal beams.

3. A solar photovoltaic integrated self-cleaning bracket as claimed in claim 2, characterized in that: The cross beam (101) is a hot-dip galvanized C-shaped channel steel, and the ends of two adjacent cross beams (101) are fixed by a U-shaped purlin connector.

4. A solar photovoltaic integrated self-cleaning bracket as claimed in claim 3, characterized in that: The track (3) comprises a T-shaped guide bar (301) and a U-shaped guide bar (302), and a pressing plate (303) is respectively arranged on both sides of the U-shaped guide bar (302); the T-shaped guide bar (301) is located at the center of the U-shaped guide bar (302).

5. A solar photovoltaic integrated self-cleaning bracket as claimed in claim 4, characterized in that: The cleaning device (5) comprises a set of fixed frames (501) and a roller brush (502), wherein both ends of the roller brush (502) are connected to the set of fixed frames (501) via bearings, a first motor (504) and a second motor (505) are fixed to one fixed frame (501), and a set of wheels (506) are also arranged on the fixed frame (501), wherein the first motor (504) is connected to one end of the roller brush (502) via a coupling; one of the wheels (506) is fixed to the output shaft of the second motor (505); and a guide wheel group slidably matched with the track (3) is also arranged on the outer side of the fixed frame (501).

6. A solar photovoltaic integrated self-cleaning bracket as claimed in claim 5, characterized in that: The guide wheel group comprises a first guide wheel (508) matched with the T-shaped guide bar (301) and a second guide wheel (507) matched with the U-shaped guide bar (302).

7. A solar photovoltaic integrated self-cleaning bracket as claimed in claim 5, characterized in that: The two fixing frames (501) are fixed via a cross bar (503).

8. A solar photovoltaic integrated self-cleaning bracket as claimed in claim 7, characterized in that: A rubber strip (509) is also fixed on the crossbar (503) and is in contact with the surface of the photovoltaic panel (2).

9. The solar photovoltaic integrated self-cleaning bracket according to claim 1, characterized in that: A pipe bracket is fixed to one end of the track (3), and a metal mesh plate is fixed to the other end of the track (3).

10. A solar photovoltaic integrated self-cleaning bracket as claimed in claim 9, characterized in that: The spray pipe (4) runs through the top of the entire support base (1), one end of the spray pipe (4) is connected to a spray system device, and the spray pipe (4) sprays cleaning liquid on the surface of the photovoltaic panel (2).

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