CN115007505B - Photovoltaic module surface cleaning structure - Google Patents
Photovoltaic module surface cleaning structure Download PDFInfo
- Publication number
- CN115007505B CN115007505B CN202210521525.4A CN202210521525A CN115007505B CN 115007505 B CN115007505 B CN 115007505B CN 202210521525 A CN202210521525 A CN 202210521525A CN 115007505 B CN115007505 B CN 115007505B
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- China
- Prior art keywords
- lifting barrel
- cleaning
- water
- bearing frame
- sliding
- Prior art date
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- 238000004140 cleaning Methods 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 98
- 238000007790 scraping Methods 0.000 claims description 33
- 230000005484 gravity Effects 0.000 claims description 26
- 230000000903 blocking effect Effects 0.000 claims description 23
- 239000007921 spray Substances 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 2
- 238000010248 power generation Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/10—Cleaning arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Cleaning In General (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses a surface cleaning structure of a photovoltaic module, which comprises a bracket and a bearing frame obliquely arranged at the upper end of the bracket, wherein a photovoltaic panel arranged parallel to the bearing frame is arranged on the upper wall of the bearing frame, a cleaning device is arranged on the bearing frame in a sliding manner, and the cleaning device is always attached to the upper wall of the photovoltaic panel in the sliding process; and a traction device capable of traction the cleaning device to slide is arranged in the bracket. The invention provides an energy-saving and environment-friendly photovoltaic module surface cleaning structure which can spontaneously clean a photovoltaic panel in a rainy weather environment, realizes a working mode of cleaning brush reciprocating type cleaning, can completely remove ash and dirt attached to the photovoltaic panel, improves the automatic cleaning frequency and ensures that the photovoltaic panel can keep a clean state for a long time.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation equipment, in particular to a surface cleaning structure of a photovoltaic module.
Background
In recent years, the state advocates environmental protection and clean energy, solar energy is used as the most convenient clean energy, the construction of a photovoltaic power station is more and more, photovoltaic power generation refers to the process of converting solar energy into electric energy through a photovoltaic power generation system, the system mainly comprises a solar photovoltaic module, a combiner box, an inverter, a transformer and distribution equipment, meanwhile, a monitoring system, an active reactive power control system, a power prediction system, a five-prevention system, a reactive power compensation device and other auxiliary systems form a complete photovoltaic power generation system, the complete photovoltaic power generation system mainly comprises three parts of a solar panel, a controller and an inverter, main components are composed of electronic components, solar cells are packaged and protected after being connected in series to form a large-area solar cell module, and then the photovoltaic power generation device is formed by matching with the components such as the power controller.
At present, the photovoltaic panel is placed in the air for a long time, so that dust in the air can be largely covered on the surface of the photovoltaic module, and the solar radiation quantity of a part is blocked, so that the effective area irradiated on the surface of the photovoltaic module is reduced, and the surface of the photovoltaic panel needs to be cleaned regularly. In the prior art, the change rate of the generated energy in the same time period is compared, so that whether the photovoltaic panel needs to be cleaned or not is detected, and then measures are taken to clean the photovoltaic panel, and the processing mode has the following defects:
1. the processing mode is a solution adopted after the change rate of the generated energy generates larger deviation, the cleaning is not enough in time, and adverse effect is caused to the power generation work to a certain extent;
2. the cleaning mode adopted is generally that a manual end water holding pipe is used for flushing, so that a small part of dust can be attached to the silicon crystal on the surface of the photovoltaic panel under the influence of water, the transmissivity of the silicon crystal on the surface of the photovoltaic module is influenced, the solar irradiation amount received by the photovoltaic module is reduced, and the photovoltaic power generation efficiency is reduced.
Disclosure of Invention
Aiming at the technical defects, the invention aims to provide a surface cleaning structure of a photovoltaic module, which not only can autonomously clean a photovoltaic panel through the change rate of generated energy, but also can autonomously clean the photovoltaic panel in a rainy weather environment (a non-working period of the photovoltaic panel) so as to improve the automatic cleaning frequency and ensure that the photovoltaic panel can keep a clean state for a long time.
In order to solve the technical problems, the invention adopts the following technical scheme.
The invention provides a surface cleaning structure of a photovoltaic module, which comprises a bracket and a bearing frame obliquely arranged at the upper end of the bracket, wherein a photovoltaic panel arranged parallel to the bearing frame is arranged on the upper wall of the bearing frame, a cleaning device is arranged on the bearing frame in a sliding manner, and the cleaning device is always attached to the upper wall of the photovoltaic panel in the sliding process; and a traction device capable of traction the cleaning device to slide is arranged in the bracket.
Preferably, the cleaning device comprises a cleaning scraping strip horizontally arranged above the photovoltaic panel, a cleaning brush attached to the upper wall of the photovoltaic panel is fixed at the lower end of the cleaning scraping strip, and the length of the cleaning brush is not smaller than the width of the photovoltaic panel; the cleaning scraper comprises a bearing frame, wherein a surrounding baffle is arranged on the periphery of the bearing frame, a first sliding rail is arranged on each surrounding baffle on two sides of the bearing frame, notches of the first sliding rails are opposite, first sliding blocks are respectively fixed on two ends of the cleaning scraper, the first sliding blocks are respectively arranged in the two first sliding rails in a sliding mode, first springs are respectively arranged in the two first sliding rails, and two ends of each first spring are respectively fixed on the lower ends of the first sliding blocks and the lower ends of the first sliding rails.
Preferably, the traction device comprises a lifting barrel and a connecting line, wherein the lifting barrel is arranged on the inner wall of the bracket in a sliding manner, the connecting line is used for traction of the cleaning scraping bar, a certain pulley is arranged in the middle on a fence with the minimum distance from the bracket, a line hole is formed in one side of the fixed pulley on the fence, a second sliding rail arranged in the vertical direction is arranged on one side wall of the bracket, the second sliding rail is positioned right below the line hole and is communicated with the line hole, a second sliding block is fixed on one side wall of the lifting barrel, and the second sliding block is arranged in the second sliding rail in a sliding manner; one end of the connecting wire is fixed on the side wall of the cleaning scraping strip, and the other end of the connecting wire passes through the fixed pulley and penetrates through the wire hole to be connected with the second sliding block.
Preferably, a drainage groove is formed between the lowest end of the photovoltaic panel and the surrounding baffle below the fixed pulley, a water collecting hole is formed in the drainage groove, the water collecting hole is connected with a guide pipe, a water outlet of the guide pipe penetrates through the bearing frame to be arranged on the lower wall of the bearing frame, and a water outlet of the guide pipe is arranged right above the lifting barrel.
Preferably, the lower wall of the bearing frame is provided with a water stop clamp capable of blocking the water outlet of the flow guide pipe through a torsion spring, the two sides of the torsion spring are respectively provided with a clamp body and a driving handle, the driving handle and the lower wall of the bearing frame form an included angle, and the lifting barrel can be used for opening the water outlet of the flow guide pipe through extruding the driving handle.
Preferably, a first drain hole is formed in the bottom of the lifting barrel, a blocking piece capable of blocking the first drain hole is movably arranged above the first drain hole, a plurality of second springs are arranged at the edge of the blocking piece at equal intervals in the circumferential direction, and two ends of each second spring are respectively fixed on the bottom wall of the lifting barrel and the blocking piece; the bottom wall of the bracket is vertically provided with a top rod, and the diameter of the top rod is smaller than that of the first water drain hole; the supporting rings which play a supporting role on the lifting barrel are fixed on the side wall of the ejector rod through a plurality of connecting rods, the gaps among the connecting rods are second drain holes, and the second drain holes are communicated with the first drain holes.
Preferably, a plurality of third drain holes are formed in the side wall of the enclosure below the fixed pulley.
Preferably, the upper end and the lower end of the lifting barrel are made of iron, the upper wall of the bracket is provided with a first magnet, and the upper wall of the supporting ring is provided with a second magnet;
in the deformation process of the first spring, the minimum pulling force of the connecting wire on the second sliding block is larger than the sum of the gravity of the lifting bucket when the lifting bucket is empty and the gravity of the second sliding block; the sum of the minimum pulling force of the connecting wire on the second sliding block and the maximum attractive force of the first magnet on the lifting barrel is smaller than the sum of the gravity of the lifting barrel when the lifting barrel is fully loaded and the gravity of the second sliding block; the maximum pulling force of the connecting line on the second sliding block is smaller than the sum of the gravity of the lifting barrel when the lifting barrel is fully loaded and the gravity of the second sliding block; the maximum pulling force of the connecting wire on the second sliding block is larger than the sum of the gravity of the lifting barrel when no load exists, the gravity of the second sliding block and the maximum attractive force of the second magnet on the lifting barrel.
Preferably, a sealing ring is fixed on the blocking piece at a position contacted with the bottom wall of the lifting barrel.
Preferably, the cleaning scraping strip is hollow, a cavity in the cleaning scraping strip is a water cavity, a plurality of water spray nozzles are arranged on one side of the cleaning scraping strip at equal intervals, and the water spray direction of the water spray nozzles points to the photovoltaic panel; the upper end of the cleaning scraping strip is communicated with an external water source through a water inlet pipe, and all water spray nozzles are communicated with the water inlet pipe through the water cavity.
The photovoltaic module surface cleaning structure has the following beneficial effects:
1. according to the invention, the cleaning brush can be attached to the upper surface of the photovoltaic panel to clean through the cooperation of the cleaning device and the traction device, and the cleaning brush can move downwards along the photovoltaic panel when the lifting barrel is fully loaded and upwards along the photovoltaic panel when the lifting barrel is empty according to the traction force of the connecting wire on the lifting barrel and the magnetic attraction force of the first magnet and the second magnet on the lifting barrel through the change of the water quantity in the lifting barrel, so that the working mode of reciprocating cleaning of the cleaning brush is realized, and ash and dirt attached to the photovoltaic panel can be completely removed.
2. The cleaning scraping strip is connected with an external water pump, and the water spray nozzle is arranged on the cleaning scraping strip, so that the water pump can be remotely controlled to be started in a mode of detecting the change rate of the generated energy in the prior art in a long-time rainwater-free drought season, and a water source is provided for reciprocating cleaning.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a cross-sectional view 1 of an embodiment of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 2;
FIG. 4 is a cross-sectional view 2 of an embodiment of the present invention;
fig. 5 is an enlarged view of a portion B in fig. 4;
FIG. 6 is an enlarged view of portion C of FIG. 4;
FIG. 7 is an orthographic view of the upper surface of the carrier;
FIG. 8 is a cross-sectional view of a carrier;
fig. 9 is an enlarged view of a portion D in fig. 8;
FIG. 10 is a schematic view of a cleaning apparatus;
FIG. 11 is a schematic view of a backing ring;
FIG. 12 is a top view of the carrier ring.
Reference numerals illustrate:
1. the cleaning device comprises a base, 2, a support, 3, a photovoltaic panel, 4, a bearing frame, 5, a cleaning scraping strip, 6, a cleaning brush, 7, a surrounding baffle, 8, a first sliding rail, 9, a first sliding block, 10, a first spring, 11, a lifting bucket, 12, a connecting wire, 13, a fixed pulley, 14, a wire hole, 15, a second sliding rail, 16, a second sliding block, 17, a drainage groove, 18, a water collecting hole, 19, a drainage pipe, 20, a water stopping clamp, 21, a clamp body, 22, a driving handle, 23, a first drainage hole, 24, a blocking piece, 25, a second spring, 26, a sealing ring, 27, a push rod, 28, a connecting rod, 29, a supporting ring, 30, a second drainage hole, 31, a third drainage hole, 32, a first magnet, 33, a second magnet, 34, a water cavity, 35, a water spraying nozzle, 36 and a water inlet pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples:
as shown in fig. 1 to 12, the invention provides a surface cleaning structure of a photovoltaic module, which comprises a base 1, wherein a bracket 2 is arranged on the base 1, a bearing frame 4 for loading a photovoltaic panel 3 is arranged at the upper end of the bracket 2, the bearing frame 4 is obliquely arranged, and the inclination angle of the photovoltaic panel 3 is the same as that of the bearing frame 4, so that the photovoltaic panel 3 can receive more solar irradiation so as to improve the power generation efficiency; a cleaning device is arranged on the bearing frame 4 in a sliding manner, and the cleaning device is always attached to the upper wall of the photovoltaic panel 3 in the sliding process; a traction device capable of dragging the cleaning device to slide is arranged in the bracket 2.
Wherein:
the cleaning device comprises a cleaning scraping strip 5 horizontally arranged above the photovoltaic panel 3, a cleaning brush 6 attached to the upper wall of the photovoltaic panel 3 is fixed at the lower end of the cleaning scraping strip 5, and the length of the cleaning brush 6 is not smaller than the width of the photovoltaic panel 3 so as to ensure that the moving track of the cleaning brush 6 can completely cover the photovoltaic panel 3; the utility model discloses a rain water scraping device, including bearing frame 4, first slide rail 8, first slide block 9, first slide rail 8, first spring 10's both ends are fixed in respectively first slide rail 8 first slide block 9 lower extreme and first slide rail 8 lower extreme, under the effect of first spring 10, clean scraper 5 need overcome its gravity and follow the component on the inclined plane and can move down in the notch that is provided with the fender 7 that encloses fender 7 to a certain extent to the rainwater water conservancy diversion respectively all around, enclose fender 7, the both sides of bearing frame 4 enclose respectively and be provided with first slide rail 8, two first slide block 9 are fixed respectively in two first slide rail 8.
Wherein:
the traction device comprises a lifting barrel 11 and a connecting line 12, wherein the lifting barrel 11 is arranged on the inner wall of the bracket 2 in a sliding manner, the connecting line 12 is used for pulling the cleaning scraping bar 5 to move, the connecting line 12 in the embodiment is a steel wire rope, a certain pulley 13 is arranged on the enclosure 7 with the smallest distance (lowest position) between the connecting line and the bracket 2 in the middle, a wire hole 14 is formed in one side of the fixed pulley 13 on the enclosure 7, a second sliding rail 15 arranged in the vertical direction is arranged on one side wall of the bracket 2, the second sliding rail 15 is positioned right below the wire hole 14 and is communicated with the wire hole 14, and the lifting barrel 11 is arranged on the second sliding rail 15 in a sliding manner through a second sliding block 16; one end of the connecting wire 12 is fixed on the side wall of the cleaning scraping bar 5, and the other end of the connecting wire 12 is connected with the second sliding block 16 through the fixed pulley 13 and penetrates through the wire hole 14; the fixed pulley 13 has the function of changing the direction of the force applied to the connecting wire 12.
For the convenience with rainwater drainage to in the lift bucket 11, set up drainage groove 17 between the fender 7 of the one end that photovoltaic panel 3 is lowest and fixed pulley 13 below, the water collecting hole 18 has been seted up to the centering position in the drainage groove 17, and water collecting hole 18 is connected with honeycomb duct 19, and the delivery port of honeycomb duct 19 runs through bear frame 4 and be fixed in bear frame 4 lower wall, the delivery port of honeycomb duct 19 arrange in just over the lift bucket 11.
In order to enable the water outlet of the flow guide pipe 19 to be automatically closed and opened, a water stop clamp 20 capable of blocking the water outlet of the flow guide pipe 19 is arranged on the lower wall of the bearing frame 4 through a torsion spring, the parts of the water stop clamp 20 on two sides of the torsion spring are a clamp body 21 and a driving handle 22 respectively, the water outlet of the flow guide pipe 19 is closed, the clamp body 21 blocks the water outlet of the flow guide pipe 19, and a certain included angle is formed between the driving handle 22 and the lower wall of the bearing frame 4, so that the water outlet of the flow guide pipe 19 can be opened by extruding the driving handle 22 through the lifting bucket 11.
In order to facilitate the rainwater in the lifting barrel 11 to be discharged, a first water discharge hole 23 is formed in the bottom of the lifting barrel 11, a blocking piece 24 capable of blocking the first water discharge hole 23 is movably arranged above the first water discharge hole 23, a plurality of second springs 25 are circumferentially and equidistantly arranged on the edge of the blocking piece 24, two ends of each second spring 25 are respectively fixed on the bottom wall of the lifting barrel 11 and the blocking piece 24, a sealing ring 26 is fixed at the position, which is in contact with the bottom wall of the lifting barrel 11, of the blocking piece 24, and the first water discharge hole 23 is tightly blocked by the blocking piece 24 under the action of the second springs 25; the bottom wall of the bracket 2 is vertically provided with a mandril 27, and the diameter of the mandril 27 is smaller than that of the first drain hole 23; the supporting rings 29 which play a supporting role on the lifting barrel 11 are fixed on the side wall of the ejector rod 27 through the connecting rods 28, the second drain holes 30 are arranged in gaps among the connecting rods 28, the second drain holes 30 are communicated with the first drain holes 23, when the ejector rod 27 pushes the blocking piece 24, the first drain holes 23 are opened, the second springs 25 extend, and rainwater in the lifting barrel 11 sequentially passes through the first drain holes 23 and the second drain holes 30 to be discharged out of the lifting barrel 11.
In order to prevent the ponding above the photovoltaic panel 3 inside the enclosure 7, a plurality of third drain holes 31 are formed in the side wall of the enclosure 7 below the fixed pulley 13, so that the ponding above the photovoltaic panel 3 can be timely discharged, and the ponding on the upper surface of the photovoltaic panel 3 is prevented from being protected.
In order to enable the lifting barrel 11 to start to descend under the condition of full rainwater at the highest position and to start to ascend under the condition of no-load rainwater at the lowest position, the upper wall of the bracket 2 is provided with a first magnet 32, the upper wall of the supporting ring 29 is provided with a second magnet 33, and meanwhile, the upper end and the lower end of the lifting barrel 11 are made of iron;
according to the spring calculation formula, f=k (L-L 0 ) Where K is the stiffness coefficient of the spring, L is the actual length of the spring, L 0 As for the natural length of the spring, the force applied to the cleaning bar 5 during the deformation of the first spring 10 is continuously changed, that is, the tension of the connecting wire 12 to the second slider 16 is changed, and in this embodiment, when the position of the cleaning bar 5 is set to be at the highest point, the tension of the connecting wire 12 to the second slider 16 is set to be the maximum tension, and when the position of the cleaning bar 5 is set to be at the lowest point, the tension of the connecting wire 12 to the second slider 16 is set to be the minimum tension;
wherein:
the minimum pulling force of the connecting wire 12 on the second sliding block 16 is larger than the sum of the gravity of the lifting bucket 11 when no load and the gravity of the second sliding block 16; the sum of the minimum pulling force of the connecting wire 12 on the second sliding block 16 and the maximum attractive force of the first magnet 32 on the lifting barrel 11 is smaller than the sum of the gravity when the lifting barrel 11 is fully loaded and the gravity of the second sliding block 16; the maximum pulling force of the connecting wire 12 on the second sliding block 16 is smaller than the sum of the gravity of the lifting bucket 11 when the lifting bucket is fully loaded and the gravity of the second sliding block 16; the maximum pulling force of the connecting wire 12 to the second slider 16 is larger than the sum of the gravity of the lifting bucket 11 when no load exists, the gravity of the second slider 16 and the maximum attractive force of the second magnet 33 to the lifting bucket 11.
Specific:
when the position of the cleaning scraping bar 5 is set to be at the highest point, the pulling force of the connecting wire 12 on the second sliding block 16 is set to be the minimum value F 1 When the cleaning bar 5 is at the lowest point, the pulling force of the connecting wire 12 to the second slider 16 is at the maximum value F 2 The method comprises the steps of carrying out a first treatment on the surface of the When the lifting barrel 11 is set to be empty, the lifting barrel 11 and the second slideThe sum of the weights of the blocks 16 is G 1 When the lifting barrel 11 is fully loaded, the sum of the gravity of the lifting barrel 11, the rainwater and the second sliding block 16 is G 2 The maximum attractive force of the first magnet 32 to the lifting barrel 11 is T 1 The maximum attractive force of the second magnet 33 to the lifting barrel 11 is T 2 The method comprises the following steps:
① F 1 >G 1 ；
② F 1 + T 1 <G 2 ；
③ F 2 <G 2 ；
④ F 2 >G 1 + T 2 ；
under the premise that the set conditions (1), 2, 3 and 4) are simultaneously met and the elasticity of the second spring 25, the elasticity of the torsion spring of the water stop clamp 20, the internal friction force of the system, the air resistance and the like are all ignored, the working principle of the invention is obtained:
in the initial state, referring to fig. 2, 3, 6, 8 and 9, the lifting barrel 11 and the cleaning blade are at the highest positions, the upper end of the lifting barrel 11 contacts the first magnet 32, the driving handle 22 of the water stop clamp 20 is pressed against the lower wall of the bearing frame 4, the water outlet of the flow guide pipe 19 is opened, the lifting barrel 11 is in an empty state, and the blocking piece 24 tightly blocks the first water drain hole 23 under the action of the second spring 25, because (1)F 1 >G 1 The lifting bucket 11 is kept at the highest position; the rainwater on the photovoltaic panel 3 flows into the lifting barrel 11 through the diversion trench, the water collecting hole 18 and the diversion pipe 19 in sequence, when the lifting barrel 11 is fully loaded, the rainwater is completely filled in the lifting barrel (2)F) 1 +T 1 <G 2 The lifting barrel 11 is instantaneously lowered, T1 is instantaneously and greatly reduced, under the traction of the connecting wire 12, the cleaning scraping plate drives the cleaning brush 6 to slide downwards along the photovoltaic panel 3 for one-time sliding cleaning, meanwhile, the cleaning scraping plate drives the first sliding block 9 to slide downwards along the first sliding rail 8, the first spring 10 is further compressed, and the cleaning scraping plate drives the first sliding block 9 to slide downwards along the first sliding rail 8 according to the elastic force calculation formula F=K (L-L 0 ) L-L can be seen 0 The elastic force F of the first spring 10 is continuously increased, namely the pulling force of the connecting wire 12 on the second sliding block 16 is continuously increased, and at the moment, the water stop clamp 20 is reset to block the water outlet of the guide pipe 19;
when the lifting barrel 11 reaches the lowest position, referring to fig. 4, 5, 6, 8, 9, 11, 12, the pulling force of the connecting wire 12 to the second slider 16 reaches the maximum value F2, since (3)F) 2 <G 2 It is known that F 2 <G 2 +T 2 Therefore, the lifting barrel 11 can be temporarily and tightly positioned on the supporting ring 29 (namely, the lifting barrel 11 is adsorbed on the second magnet 33), at the moment, the ejector rod 27 pushes the blocking piece 24, the first drain hole 23 is opened, and the rainwater in the lifting barrel 11 is sequentially discharged out of the lifting barrel 11 through the first drain hole 23 and the second drain hole 30; when the rainwater in the lifting bucket 11 is completely discharged, the water is discharged due to (4)F) 2 >G 1 +T 2 The lifting barrel 11 rises instantly, the T2 is reduced instantly and greatly, under the action of the elasticity of the first spring 10, the first sliding block 9 drives the cleaning scraping plate to drive the cleaning brush 6 to slide upwards along the photovoltaic panel 3, the cleaning is performed by sliding upwards once, the first spring 10 stretches further, and the cleaning brush is driven to slide upwards according to the elasticity calculation formula F=K (L-L 0 ) L-L can be seen 0 The tension force F of the first spring 10 is continuously reduced, i.e. the tension force of the connecting wire 12 against the second slider 16 is continuously reduced,
when the lifting barrel 11 is lifted to the highest position, that is, is reset to the system structure in the initial state, please refer to fig. 2, 3 and 6, at this time, the driving handle 22 of the water stop clip 20 receives the pressure of the lifting barrel 11 and contacts the lower wall of the bearing frame 4, the water outlet of the flow guide pipe 19 is opened again, and at this time, the lifting barrel 11 enters the water collecting state from the idle state.
The process is periodically carried out, so that the working mode of reciprocating cleaning of the cleaning brush 6 is realized, and ash and dirt attached to the photovoltaic panel 3 can be completely removed.
In addition, in order to prevent the automatic cleaning frequency from being greatly reduced or even stopped when the device is used in a long-term rainwater-free drought season, the device is connected with an external water source, and the device is specifically:
referring to fig. 9 and 10, the cleaning scraping strip 5 is hollow, the cavity inside the cleaning scraping strip 5 is a water cavity 34, a plurality of water spray nozzles 35 are arranged at one side of the cleaning scraping strip 5 at equal intervals, and the water spray direction of the water spray nozzles 35 is directed to the photovoltaic panel 3; the upper end of the cleaning scraping strip 5 is communicated with an external water source through a water inlet pipe 36, and all the water spray nozzles 35 are communicated with the water inlet pipe 36 through the water cavity 34;
in this embodiment, the external water source is a water pump, and when the system monitors that the photovoltaic panel 3 needs to be cleaned, the water pump can be controlled to be turned on, which is the prior art, and will not be described again.
When the cleaning device is used, when the photovoltaic panel 3 is detected to be cleaned, the water pump is remotely started, water flows into the water cavity 34 through the water inlet pipe 36, water in the water cavity 34 is sprayed to the upper surface of the photovoltaic panel 3 through the water spray nozzle 35 to be washed, and the washed water flows into the lifting barrel 11 through the diversion trench, the water collection hole 18 and the diversion pipe 19 in sequence, and is subjected to a working mode of reciprocating cleaning according to the working principle of the cleaning device.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (6)
1. The surface cleaning structure of the photovoltaic module is characterized by comprising a bracket (2) and a bearing frame (4) obliquely arranged at the upper end of the bracket (2), wherein a photovoltaic panel (3) arranged parallel to the bearing frame (4) is arranged on the upper wall of the bearing frame (4), a cleaning device is arranged on the bearing frame (4) in a sliding manner, and the cleaning device is always attached to the upper wall of the photovoltaic panel (3) in the sliding process; a traction device capable of dragging the cleaning device to slide is arranged in the bracket (2);
the cleaning device comprises a cleaning scraping strip (5) horizontally arranged above the photovoltaic panel (3), a cleaning brush (6) attached to the upper wall of the photovoltaic panel (3) is fixed at the lower end of the cleaning scraping strip (5), and the length of the cleaning brush (6) is not smaller than the width of the photovoltaic panel (3); the cleaning scraper comprises a bearing frame (4), wherein surrounding barriers (7) are respectively arranged around the bearing frame (4), first sliding rails (8) are respectively arranged on the surrounding barriers (7) on two sides of the bearing frame (4), notches of the two first sliding rails (8) are opposite, first sliding blocks (9) are respectively fixed at two ends of a cleaning scraper (5), the two first sliding blocks (9) are respectively arranged in the two first sliding rails (8) in a sliding manner, first springs (10) are respectively arranged on the two first sliding rails (8), and two ends of each first spring (10) are respectively fixed at the lower ends of the corresponding first sliding blocks (9) and the lower ends of the corresponding first sliding rails (8);
the traction device comprises a lifting barrel (11) and a connecting line (12) for traction of the cleaning scraping strip (5) on the inner wall of the support (2), a certain pulley (13) is arranged on a fence (7) with the minimum distance between the lifting barrel and the support (2) in the middle, a wire hole (14) is formed in one side of the fixed pulley (13) on the fence (7), a second sliding rail (15) arranged in the vertical direction is arranged on one side wall of the support (2), the second sliding rail (15) is positioned under the wire hole (14) and is communicated with the wire hole (14), a second sliding block (16) is fixed on one side wall of the lifting barrel (11), and the second sliding block (16) is arranged in the second sliding rail (15) in a sliding mode; one end of the connecting wire (12) is fixed on the side wall of the cleaning scraping bar (5), and the other end of the connecting wire (12) is connected with the second sliding block (16) through the fixed pulley (13) and penetrates through the wire hole (14);
a drainage groove (17) is formed between the lowest end of the photovoltaic panel (3) and the surrounding baffle (7) below the fixed pulley (13), a water collecting hole (18) is formed in the drainage groove (17), the water collecting hole (18) is connected with a flow guide pipe (19), a water outlet of the flow guide pipe (19) penetrates through the bearing frame (4) and is arranged on the lower wall of the bearing frame (4), and a water outlet of the flow guide pipe (19) is arranged right above the lifting barrel (11);
a first water drain hole (23) is formed in the bottom of the lifting barrel (11), a blocking piece (24) capable of blocking the first water drain hole (23) is movably arranged above the first water drain hole (23), a plurality of second springs (25) are arranged at the edge of the blocking piece (24) at equal intervals in the circumferential direction, and two ends of each second spring (25) are respectively fixed on the bottom wall of the lifting barrel (11) and the blocking piece (24); a push rod (27) is vertically arranged on the bottom wall of the bracket (2), and the diameter of the push rod (27) is smaller than that of the first water discharge hole (23); the supporting rings (29) which play a supporting role on the lifting barrel (11) are fixed on the side wall of the ejector rod (27) through the connecting rods (28), the gaps among the connecting rods (28) are second drain holes (30), and the second drain holes (30) are communicated with the first drain holes (23).
2. The surface cleaning structure of a photovoltaic module according to claim 1, wherein a water stop clamp (20) capable of blocking a water outlet of the flow guide pipe (19) is arranged on the lower wall of the bearing frame (4) through a torsion spring, the water stop clamp (20) is respectively provided with a clamp body (21) and a driving handle (22) on two sides of the torsion spring, an included angle is formed between the driving handle (22) and the lower wall of the bearing frame (4), and the lifting barrel (11) can open the water outlet of the flow guide pipe (19) through extruding the driving handle (22).
3. The surface cleaning structure of the photovoltaic module according to claim 1, wherein a plurality of third drain holes (31) are formed on the side wall of the enclosure (7) below the fixed pulley (13).
4. The surface cleaning structure of the photovoltaic module according to claim 1, wherein the upper end and the lower end of the lifting barrel (11) are made of iron, a first magnet (32) is arranged on the upper wall of the bracket (2), and a second magnet (33) is arranged on the upper wall of the supporting ring (29);
during the deformation of the first spring (10), the minimum tension of the connecting wire (12) to the second sliding block (16) is larger than the sum of the gravity of the lifting barrel (11) when the lifting barrel is in no-load and the gravity of the second sliding block (16); the sum of the minimum pulling force of the connecting wire (12) on the second sliding block (16) and the maximum attractive force of the first magnet (32) on the lifting barrel (11) is smaller than the sum of the gravity of the lifting barrel (11) when the lifting barrel is fully loaded and the gravity of the second sliding block (16); the maximum pulling force of the connecting wire (12) on the second sliding block (16) is smaller than the sum of the gravity of the lifting barrel (11) when the lifting barrel is fully loaded and the gravity of the second sliding block (16); the maximum pulling force of the connecting wire (12) on the second sliding block (16) is larger than the sum of the gravity of the lifting barrel (11) when the lifting barrel (11) is in no-load, the gravity of the second sliding block (16) and the maximum attractive force of the second magnet (33) on the lifting barrel (11).
5. A surface cleaning structure for a photovoltaic module according to claim 1, wherein a sealing ring (26) is fixed to the blocking member (24) at a position contacting the bottom wall of the lifting barrel (11).
6. The surface cleaning structure of the photovoltaic module according to claim 1, wherein the cleaning scraping strip (5) is hollow, a cavity in the cleaning scraping strip (5) is a water cavity (34), a plurality of water spray nozzles (35) are arranged at one side of the cleaning scraping strip (5) at equal intervals, and the water spray direction of the water spray nozzles (35) points to the photovoltaic panel (3); the upper end of the cleaning scraping strip (5) is communicated with an external water source through a water inlet pipe (36), and all water spray nozzles (35) are communicated with the water inlet pipe (36) through the water cavity (34).
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| CN202210521525.4A CN115007505B (en) | 2022-05-13 | 2022-05-13 | Photovoltaic module surface cleaning structure |
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| CN202210521525.4A CN115007505B (en) | 2022-05-13 | 2022-05-13 | Photovoltaic module surface cleaning structure |
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| CN115007505B true CN115007505B (en) | 2024-03-08 |
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| CN115007505A (en) | 2022-09-06 |
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Address after: 221699 south side of Kunming Road, Peixian Economic Development Zone, Xuzhou City, Jiangsu Province Applicant after: Zhongrun Solar Technology (Xuzhou) Co.,Ltd. Address before: 221600 South of Kunming Road, Peixian Economic Development Zone, Xuzhou City, Jiangsu Province Applicant before: Jiangsu Yuhui Photovoltaic Technology Co.,Ltd. |
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