CN110193498B - Photovoltaic board surface cleaning device - Google Patents
Photovoltaic board surface cleaning device Download PDFInfo
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- CN110193498B CN110193498B CN201910543869.3A CN201910543869A CN110193498B CN 110193498 B CN110193498 B CN 110193498B CN 201910543869 A CN201910543869 A CN 201910543869A CN 110193498 B CN110193498 B CN 110193498B
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- Prior art keywords
- photovoltaic panel
- sweeping
- scraping
- retrace
- photovoltaic
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- 238000004140 cleaning Methods 0.000 title claims abstract description 111
- 238000010408 sweeping Methods 0.000 claims abstract description 128
- 238000007790 scraping Methods 0.000 claims abstract description 83
- 238000007664 blowing Methods 0.000 claims abstract description 33
- 238000009434 installation Methods 0.000 claims abstract description 27
- 238000009826 distribution Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 5
- 238000004146 energy storage Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 238000010248 power generation Methods 0.000 abstract description 8
- 238000011086 high cleaning Methods 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 47
- 238000010926 purge Methods 0.000 description 28
- 238000000034 method Methods 0.000 description 24
- 230000008569 process Effects 0.000 description 20
- 230000000694 effects Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- 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
- B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
- B08B1/165—Scrapers
-
- 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
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
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- 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
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- 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
- Photovoltaic Devices (AREA)
- Cleaning In General (AREA)
Abstract
The invention relates to the technical field of cleaning of photovoltaic modules, and particularly discloses a photovoltaic panel surface cleaning device. This photovoltaic board surface cleaning device, including being the photovoltaic board cluster that the linear arrangement installation formed, its characterized in that: a travelling device is transversely arranged on one group or a plurality of adjacent groups of photovoltaic panel strings, a front scanning device, a scraping scanning device and a retrace device which transversely cover the surfaces of the photovoltaic panel strings are sequentially arranged on the travelling device from front to back, a blower system and an automatic control system are arranged on the travelling device, and the blower system is respectively connected with the front scanning device, the retrace device and the auxiliary blowing system; the automatic control system is respectively connected with the walking device, the front sweeping device, the scraping and sweeping device, the flyback device and the blower system. The invention has reasonable structure, stable operation and high cleaning efficiency, and is used for reasonably maintaining the photovoltaic power station of the user and improving the power generation efficiency.
Description
Field of the art
The invention relates to the technical field of cleaning of photovoltaic modules, in particular to a photovoltaic panel surface cleaning device.
(II) background art
Solar energy is inexhaustible renewable resources, photovoltaic power generation is a production mode of clean energy with huge potential, is widely paid attention to by people, is also a new energy development direction for national key support and popularization, and is unprecedented in recent years, so that the development of national economy is promoted to a certain extent.
However, it should also be seen that in the practice of photovoltaic power generation, some disadvantages, such as reduced cleanliness due to ash on the surface area of the photovoltaic panel, are gradually exposed, which not only results in reduced power generation efficiency, but also affects the lifetime of the device to some extent. As a result, the surface cleaning problem of photovoltaic panels has become non-negligible.
The surface cleaning modes of the photovoltaic panel adopted at present mainly comprise: the manual dry cleaning method is that a manual hand-held long-handle mop is matched with a special dust cleaning agent for cleaning, the cleaning effect is poor, dust traces are often left, and the photovoltaic panel is easily damaged due to uneven operation force; the manual water-carrying control washing method for the vehicle has the advantages that the impact force of water flow on the photovoltaic panel is uncontrollable during operation, the panel surface is easily damaged, the water stain formed on the surface can shield light rays to influence power generation, and a large amount of water resources are also needed; the special vehicle water-carrying washing method or the special vehicle mechanical cleaning method solves the problem of impact damage of water flow to the photovoltaic panel, but has the defects of water consumption and energy consumption of a transport vehicle, and the vehicle needs a certain space to run, so that the space resource is wasted greatly; the cleaning robot mode is widely used at present, the cleaning effect is improved, but the equipment has a plurality of operating parts and potential equipment fault points, and the cleaning effect is still not ideal by only using the single cleaning mode of the rotary brush; in addition, most of the existing cleaning robot facilities adopt self-distribution photovoltaic plates for supplying power to cleaning equipment, and the self-distribution photovoltaic plates do not have automatic cleaning conditions, so that the power generation efficiency is affected, and the equipment operation is unstable due to insufficient power supply.
(III) summary of the invention
The invention provides a photovoltaic panel surface cleaning device which is reasonable in structure, uniform and thorough in cleaning and stable in operation, and aims to make up the defects of the prior art.
The invention is realized by the following technical scheme:
the utility model provides a photovoltaic board surface cleaning device, is the photovoltaic board cluster that the installation formed, its characterized in that including being the straight line arrangement: the travelling device is transversely erected on one group or a plurality of adjacent groups of photovoltaic panel strings, a front scanning device, a scraping scanning device and a retrace device which transversely cover the surfaces of the photovoltaic panel strings are sequentially arranged on the travelling device from front to back, a blower system and an automatic control system are arranged on the travelling device, and the blower system is respectively connected with the front scanning device and the retrace device; the automatic control system is respectively connected with the walking device, the front sweeping device, the scraping and sweeping device, the flyback device and the blower system.
The invention adopts a two-stage three-section deep cleaning mode, the first stage is high-speed air flow blowing, the strength is even, the coverage is tight, no dead angle exists, and dust can not be remained at the corner part of the surface of the photovoltaic panel; the cleaning device of the invention performs a first level of purging during the entire process of advancing from the starting position to the ending position and returning from the ending position to the starting position. The second stage is a contact type soft scraping and sweeping sheet which is used as the supplement of the first stage sweeping, so that the sweeping is more thorough; the scraping operation only runs in the forward stage from the initial position to the final position of the cleaning device, but does not run in the return stage from the final position to the initial position, and the scraping sheet is in a lifting state and is not contacted with the surface of the photovoltaic panel string; the return phase does not run the sweep for the following purposes: during the forward scraping and sweeping process, a small amount of dust possibly remaining at the transition part of the corner part of the surface of the photovoltaic panel is concentrated, the photovoltaic panel is completely swept by the airflow in the returning process, the scraping and sweeping process is not operated any more, and the phenomenon that the corner part is possibly accumulated with residual dust again due to the scraping and sweeping operation can be effectively avoided.
During a cleaning cycle, the cleaning device of the invention performs high-speed air flow sweeping during the forward movement to clean the first section; the scraping and sweeping sheets are simultaneously used for scraping and sweeping in the forward process, and the second section of cleaning is performed; the high-speed air flow sweeping performed in the returning process is the third section sweeping. The two-stage three-section cleaning mode is implemented, so that the effects of clean surface and no residual ash at the corners can be achieved.
The more preferable technical scheme of the invention is as follows:
the walking device is provided with a self-distribution photovoltaic plate and an auxiliary blowing system erected on the surface of the self-distribution photovoltaic plate, and the auxiliary blowing system is connected with the blowing system; the auxiliary sweeping system is arranged to sweep the surface of the self-distribution photovoltaic plate of the self-carrying power supply device of the cleaning device, so that the power sufficiency of the self-carrying power supply device is ensured, and the stable operation of the equipment is ensured.
Further, the self-distribution photovoltaic plate is connected with an energy storage device and a voltage transformation device, and is respectively connected with a travelling device, a blowing system and an automatic control system; the auxiliary sweeping system comprises an auxiliary sweeping installation pipe arranged on the travelling device, an auxiliary sweeping nozzle combination is arranged on the auxiliary sweeping installation pipe, the auxiliary sweeping installation pipe is connected with the air blast system through an auxiliary sweeping air pipe, and an auxiliary sweeping control valve is arranged on the auxiliary sweeping air pipe to conduct on-off control on an air flow channel of the auxiliary sweeping system.
The blowing system comprises a blower assembly arranged on the travelling device, an air outlet of the blower assembly is connected with a main blowing pipeline, and the main blowing pipeline is respectively connected with a front sweeping air pipe, a flyback air pipe and an auxiliary sweeping air pipe; the blower system is used for generating high-speed airflow as power for blowing dust.
The front sweeping device comprises a front sweeping installation pipe arranged on the travelling device, a front sweeping nozzle combination is arranged on the front sweeping installation pipe, the front sweeping installation pipe is communicated with the air blast system through a front sweeping air pipe, and a front sweeping control valve is arranged on the front sweeping air pipe; the retrace device comprises a retrace mounting tube arranged on the travelling device, a retrace nozzle combination is arranged on the retrace mounting tube, the retrace mounting tube is communicated with the blower system through a retrace air pipe, and a retrace control valve is arranged on the retrace air pipe. The front sweeping nozzle assembly and the flyback nozzle assembly are both multichannel nozzles, the air flow channels of the nozzles are designed according to an aerodynamic principle, and air from the air blowing system forms uniform, stable, smooth and controllable air flow after passing through the nozzles so as to sweep dust.
The scraping device comprises a scraping executing piece connected to the bottom of the travelling device through a scraping lifter, two groups of scraping sheets are arranged at the tail end of the scraping executing piece, the two groups of scraping sheets form a V-shaped structure, the lower ends of the scraping sheets are clung to the surface of the photovoltaic panel string, and the scraping device is used for scraping dust; the width dimension of the scraping device is matched with the width of the cleaned photovoltaic panel.
The scraping and sweeping piece comprises a V-shaped installation framework, a plurality of soft micro pieces are fixed on the installation framework, the adjacent micro pieces are overlapped in sequence from head to tail, the tail of the previous micro piece is positioned in front of the head of the next micro piece, the lower end of the micro piece is a plurality of strips with gaps, the possibility that the scraping and sweeping piece deforms is reduced, and meanwhile contact conditions are improved better.
Furthermore, the gaps among the long strips on the microchip penetrate through the whole thickness of the microchip, but are not perpendicular to the working surface of the microchip, and the projections of the front opening outline and the rear opening outline of the same gap on the microchip in the thickness direction are not overlapped or intersected, so that the contact blank of the microchip and the photovoltaic panel is not generated when the scraping operation is carried out, and cleaning omission is not generated at any part.
The travelling device comprises a trolley frame, wherein a motor transmission device is arranged at the upper part of the trolley frame, a driving wheel connected with the motor transmission device is arranged at the bottom of the trolley frame, a supporting wheel is arranged at the middle position of the bottom of the trolley frame, and limit switches connected with an automatic control system are arranged at two ends of the trolley frame in the travelling direction; and through the position positioning detection of the limit switch, the automatic control system sends a stop or travel signal to the traveling device to control the turning-off and the turning-on of the motor transmission device.
Further, guide wheels positioned at the outer sides of the photovoltaic plate strings are arranged on the two side edges of the trolley frame, the axes of the guide wheels are perpendicular to the surfaces of the photovoltaic plate strings, and the roller surfaces of the guide wheels are matched with the side surfaces of the photovoltaic plate strings and roll along the side surfaces to prevent the running gear from deviating; the edge portions of the driving wheel, the supporting wheel and the guide wheel are all made of soft rubber materials so as to reduce impact and abrasion on the surface of the contacted photovoltaic panel.
The invention adopts two-stage three-section cleaning to the photovoltaic panel of the user, and the main means is that the high-speed air flow is blown to the surface of the photovoltaic panel to promote the rapid separation of dust and the panel; then the soft scraping and sweeping sheet is matched for scraping and sweeping, and residual dust on the surface of the photovoltaic panel is removed again; and finally, jetting high-speed air flow to deeply remove residual dust at the corners of the plate surface. And an automatic cleaning facility is arranged on the self-distribution photovoltaic plate to automatically clean the surface of the self-distribution photovoltaic plate. By adopting the technology, the surface of the photovoltaic panel of the user can be well ensured to be clean, so that the photovoltaic panel can receive more light energy in unit time, and the power generation efficiency is improved; meanwhile, the self-light-distribution photovoltaic panel also has the convenient condition of surface cleaning, so that the power supply can be kept sufficient, and the cleaning device can be ensured to normally operate.
Compared with a rolling sweeping mode of a general sweeping robot, the invention has no dead angle during high-speed airflow sweeping, and is particularly more advantageous for sweeping dust accumulated at the boundary and joint of parts at the edge angle of a photovoltaic panel. In the blowing process, as the direction and the strength of the air flow are controllable, the rising height of dust is small, and most dust surges forward along with the air flow until the dust falls near the front of a blowing nozzle after stopping blowing, and the dust is accumulated in a set area outside the end of the photovoltaic panel strings, and is removed after the accumulated quantity reaches a certain degree. If a plurality of strings of photovoltaic plates are arranged in parallel, a plurality of sets of cleaning devices can synchronously run (synchronously move forward and return), and dust blown off the surface of the photovoltaic plates hardly has the opportunity to spread to two sides, so that the cleaning effect is ensured.
The invention has reasonable structure, stable operation and high cleaning efficiency, and is used for reasonably maintaining the photovoltaic power station of the user and improving the power generation efficiency.
(IV) description of the drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the view in the direction A shown in FIG. 1;
FIG. 3 is a schematic view showing a sectional structure of the B-B surface shown in FIG. 1;
FIG. 4 is a schematic view of the structure of the scraping sheet of the present invention;
FIG. 5 is a schematic view of the structure of a microchip of the present invention;
FIG. 6 is a schematic view of the cross-sectional structure of the C-C plane shown in FIG. 5;
fig. 7 is a schematic perspective view of a microchip according to the present invention.
In the figure, a front scanning device, a 2-retracing device, a 3-auxiliary sweeping system, a 4-scraping device, a 5-front scanning nozzle combination, a 6-front scanning installation tube, a 7-front scanning air tube, a 8-front scanning control valve, a 9-retrace nozzle combination, a 10-retrace installation tube, a 11-retrace air tube, a 12-retrace control valve, a 13-auxiliary scanning nozzle combination, a 14-auxiliary scanning installation tube, a 15-auxiliary scanning air tube, a 16-auxiliary scanning control valve, a 17-scraping sheet, a 18-scraping execution piece, a 19-scraping lifter, a 20-blower assembly, a 21-blowing main tube, a 22-trolley frame, a 23-motor transmission device, 24 driving wheels, 25 supporting wheels, 26 guiding wheels, 27-installation frameworks, 28 micro sheets and 29 self-distributing photovoltaic panels.
(fifth) detailed description of the invention
The invention is further explained below in connection with specific examples to facilitate understanding. To distinguish the self-distributing photovoltaic panel 29 used to power the cleaning apparatus of the present invention, the photovoltaic power station photovoltaic panel that is subjected to the cleaning process is referred to as the consumer photovoltaic panel where necessary to avoid confusion.
Example 1:
the cleaning device can realize batch cleaning of the photovoltaic panels of a user in groups, and a plurality of photovoltaic panel monomers are arranged in series (a plurality of photovoltaic panels with rectangular shapes are arranged one by one on a plane and are linearly arranged into a group, which is called a series; a plurality of strings of photovoltaic panels are arranged in one area frequently), so that the photovoltaic panels can be cleaned together in a single string or in a plurality of strings (a plane arrangement schematic diagram in the process of cleaning together in double strings is shown in the attached figure 1); the cleaning device walks above the surface of the photovoltaic panel, and cleans dust on the surface of the photovoltaic panel in the walking process.
In the forward stage of the cleaning device, a front sweeping device 1 of a main sweeping system is started, a blower is started to blow air, the air is sent to a front sweeping nozzle combination 5 of the front sweeping device 1, and dust on the surface of a photovoltaic panel is removed by high-speed air flow sprayed out of nozzles; in the return phase of the cleaning device, the retrace device 2 of the main purge system is turned on, and the high-speed air flow ejected from the retrace nozzle assembly 9 continues to sweep dust on the surface of the photovoltaic panel. In the forward stage of the cleaning device, the scraping and sweeping device 4 is started to work, the soft scraping and sweeping sheet 17 is in a falling state and is contacted with the surface of the photovoltaic panel, residual dust is scraped to two sides, and the residual dust is scattered into gaps below the photovoltaic panel in a concentrated mode. Before the main purge system of the cleaning device is started, the auxiliary purge system 3 is started first to purge dust mounted on the surface of the self-distribution photovoltaic panel 29 with the power supply device. All cleaning works realize automatic control, and working parameters such as cleaning time, cleaning period and the like can be set.
Example 2: description of the sequence of operation of the apparatus of the cleaning device of the invention
The working process of the cleaning device is as follows: before the cleaning work starts, the cleaning device is stopped at one end of the string-shaped arrangement area of the photovoltaic panel, namely, the starting position, and waits for receiving a work starting instruction. When the user photovoltaic panel needs to be cleaned, the automatic control system sends a signal to the cleaning device, an auxiliary sweeping control valve 16 on an auxiliary sweeping air pipe 15 of the auxiliary sweeping system 3 is opened, and two control valves (a front sweeping control valve 8 and a flyback control valve 12) of an air supply pipeline of the main sweeping system are closed; the blower system is turned on, and the generated air flow is sent to the auxiliary blowing system 3, and is blown to the surface of the self-powered photovoltaic panel 29 of the self-powered device mounted on the cleaning device through the auxiliary blowing nozzle assembly 13 mounted on the auxiliary blowing system 3, so as to remove the dust on the self-powered photovoltaic panel 29.
After the auxiliary purging system 3 purges for a period of time (for example, 5 seconds) according to preset parameters, a front purge control valve 8 on a front purge air pipe 7 of the main purging system is opened, an auxiliary purge control valve 16 on an auxiliary purge air pipe 15 of the auxiliary purging system 3 is closed, a travelling device of the cleaning device is opened, the cleaning device moves forward on the photovoltaic panel string at a set speed, at the moment, the front purge device 1 is in an operating state, and dust on the surface of the photovoltaic panel is removed by high-speed air flow sprayed from a front purge nozzle assembly 5.
When the cleaning device reaches the other end of the photovoltaic panel string, namely the end position, the cleaning device touches the limit switch, the automatic control system sends a stop signal to the running device, and the running device stops running; after a certain time (for example, 5 seconds) is delayed, a retrace control valve 12 on a retrace connection air pipe 11 of the main purging system is opened to carry out retrace operation, then a front-sweep control valve 8 is closed, the running gear reversely runs, the cleaning device is returned, and the high-speed air flow sprayed out of a retrace nozzle combination 9 continuously cleans the surface of the photovoltaic panel.
When the cleaning device returns to the starting position, the limit switch is touched, the automatic control system sends a stop signal to the running device, the cleaning device stops at the starting position, a certain time is delayed to wait, the blower system stops working, the flyback control valve 12 is closed, the cleaning device stops waiting until the cleaning device receives a next cleaning cycle starting working signal, and then cleaning is carried out.
The cleaning device operates in the first half period (namely in the process of operating from a starting position to an end position) above the photovoltaic panel, the scraping and sweeping device 4 arranged on the travelling device always works, the soft scraping and sweeping sheet 17 of the cleaning device always contacts with the surface of the photovoltaic panel, and residual dust is scraped to two sides and intensively scattered below the photovoltaic panel; in the latter half period (i.e., in the process of returning from the end position to the start position), the scraping device 4 does not perform the scraping operation, so that dust residue can be prevented from being generated again at the corner of the photovoltaic panel.
Example 3: detailed composition and operation status description of the device of the present invention
(1) Main purge system
The main body device for cleaning the photovoltaic panel of the user comprises a front sweeping device 1 and a back sweeping device 2 which are respectively arranged at the front part and the rear part of the trolley frame 22. The front sweeping device is used for sweeping dust on the photovoltaic panel in the running process of the cleaning device from the initial position to the final position, and the flyback device is used for sweeping dust on the photovoltaic panel in the running process of the cleaning device returning to the initial position from the final position. The front sweeping device 1 consists of a front sweeping nozzle combination 5, a front sweeping mounting pipe 6, a front sweeping air pipe 7 and a front sweeping control valve 8; the front sweeping air pipe 7 is positioned between the main air supply pipe 21 of the air blowing system and the front sweeping installation pipe 6, and is provided with a front sweeping control valve 8 for switching off and switching on the air flow passage of the front sweeping device 1; a plurality of front scanning nozzle combinations 5 are arranged on the front scanning installation pipe 6. The high-speed air flow from the air blowing system is input into the front sweeping installation pipe 6 through the front sweeping air pipe 7, finally reaches the front sweeping nozzle combination 5, and is sprayed to the surface of the photovoltaic panel from the outlet at the front end of the nozzle to blow off dust on the photovoltaic panel. The retrace device 2 is composed of a retrace nozzle combination 9, a retrace mounting tube 10, a retrace wind pipe 11 and a retrace control valve 12, and the mounting mode, the working principle and the functions of the components are the same as those of the front retrace device 1.
The cleaning device adopts a multi-channel nozzle, and an air flow channel of the nozzle is designed according to an aerodynamic principle; the air from the blower system passes through the nozzle to form a uniform, stable, smooth and controllable air flow for blowing dust. Compared with a single-hole nozzle, the multichannel nozzle has the advantages of low noise, lower pressure of the medium required under the same blowing force, low unit consumption of the medium and capability of effectively purging in a long distance.
As a different cleaning embodiment, the cleaning device can be turned on either of the front scanning device 1 and the retrace device 2 alone or both during either of forward and return operations.
(2) Auxiliary purge system 3
For cleaning the surface of a self-distributing photovoltaic panel 29 on a self-contained power supply device provided for the cleaning device. Mounted on the trolley frame 22 in the vicinity of the self-distributing photovoltaic panel 29. The device consists of an auxiliary scanning nozzle combination 13, an auxiliary scanning installation pipe 14, an auxiliary scanning air pipe 15 and an auxiliary scanning control valve 16; the auxiliary sweeping air pipe 15 is positioned between the main air supply pipe 21 and the auxiliary sweeping mounting pipe 14 of the air blowing system, and is provided with an auxiliary sweeping control valve 16 for switching off and switching on an air flow passage of the auxiliary sweeping system 3; a plurality of auxiliary scanning nozzle assemblies 13 are mounted on the auxiliary scanning mounting pipe 14. The high-speed air flow from the air blast system is conveyed to the auxiliary sweeping mounting pipe 14 through the auxiliary sweeping air pipe 15, finally reaches the auxiliary sweeping nozzle combination 13, is sprayed to the surface of the self-distribution photovoltaic panel 29 from the outlet at the front end of the nozzle, and blows off dust falling on the surface. The secondary purge system 3 also employs a multi-channel nozzle.
(3) Scraping and sweeping device 4
The device consists of a soft scraping sheet 17, a scraping executing piece 18 and a scraping lifter 19 and is used for deeply cleaning a photovoltaic panel of a user. Two groups of scraping and sweeping blades 17 made of soft rubber materials or other similar materials are arranged on the scraping and sweeping executing piece 18 to form a V-shaped structure, and the scraping and sweeping executing piece 18 is arranged at the lower position of the trolley frame 22. The lower end of the scraping and sweeping piece 17 is tightly attached to the surface of the photovoltaic panel and is used for scraping and sweeping dust. The width dimension of the scraping device 4 is matched with the width of the photovoltaic panel to be cleaned.
When the cleaning device runs (i.e. moves forwards) from the initial position to the final position, the tip of the V-shaped structure faces to the forward direction, the scraping and sweeping piece 17 scrapes and sweeps dust forwards, and the dust is enabled to incline outwards along the two sides of the V-shaped structure until the dust is pushed and scraped to gaps at the two sides of the photovoltaic panel to fall; when the cleaning device is operated (i.e., returned) from the end position to the start position, the wiping device is lifted up, so that the wiping blade 17 is separated from the surface of the photovoltaic panel, and the wiping operation is not performed.
Any one of the two scraping sheets forming the V-shaped edge can be designed into an integral structure, and consists of a large long sheet, so that the structure is simple and the replacement is convenient; the photovoltaic panel can be designed into a mode of combining a plurality of smaller short sheets, a plurality of small-size short sheets are orderly arranged, the left end and the right end of each small sheet are overlapped and overlapped to be in a free state, and any side of a V shape is formed together, so that the deformation phenomenon of the scraping and sweeping sheet 17 can be well avoided, good contact with the surface of the photovoltaic panel is maintained, and a better scraping and sweeping effect is obtained. By adopting the combination mode, the maintenance cost can be reduced, and only the failed small piece can be replaced when the small piece is damaged. In order to further reduce the possibility of deformation of the wiper blade 17, the portion of the lower end of the wiper blade 17 contacting the photovoltaic panel may be designed in a strip-like structure, which may also better improve the contact condition.
As one of the exemplary embodiments, a combined scraping and sweeping blade formed by combining a plurality of small blades with strip-shaped lower ends can be illustrated by fig. 4, and basically comprises a mounting frame 27, a plurality of soft micro-blades 28 (namely, the small blades as the foregoing) fixed on the frame, and other accessory parts connected with the trolley frame 22; the mounting frame 27 is a rigid structural frame, the connection part of the mounting frame and the microchip 28 is designed into a raised ladder shape, the plurality of microchip 28 can be mounted on a plurality of ladder steps, each microchip 28 is orderly arranged, the front and the rear are sequentially overlapped, and the tail of the front is positioned in front of the head of the rear, so that dust can move forwards and outwards during cleaning. As shown in fig. 5 and 6, the lower end portion of each microchip 28 is designed into a plurality of strips, and a thin and narrow gap is arranged between every two strips, so that each strip has sufficient expansion space when deformed during working, and good contact with the cleaning plate surface is ensured; the gap extends through the entire thickness of the microchip 28, but is not perpendicular to the working surface of the microchip 28, but has a suitable angle of inclination such that the projections of the gap opening profiles of the front and rear surfaces of the microchip 28 in the thickness direction do not overlap and do not intersect, i.e., the projections of the two opening profiles of any gap on a plane parallel to the working surface do not intersect, thereby ensuring that no contact gap between the microchip 28 and the photovoltaic panel occurs during the scraping operation, and no cleaning omission occurs at any position.
A scraping lifter 19 on the scraping device 4 is used for lifting and lowering the scraping sheet 17. In the process that the cleaning device runs from the initial position to the final position of the photovoltaic panel strings of the user, the scraping and sweeping piece 17 is in a descending state, and the scraping and sweeping device 4 works; during the period, the scraping and sweeping sheet 17 is fully contacted with the surface of the photovoltaic panel, and the dust scraping and sweeping operation is implemented; the cleaning device is returned from the end position to the start position for a period of time in which the wiper blade 17 is in a lifted state, the wiper blade is not in contact with the photovoltaic panel, and the wiping operation is not performed. Thus, a small amount of dust possibly remaining near the raised parts of the corners of the surface of the photovoltaic panel during the forward scraping process can be cleaned by the high-speed air flow from the flyback device 2 during the return process; the return process in which the scraping sheet 17 is in a lifted state can avoid the possibility of residual dust accumulation at the corner of the photovoltaic panel.
As different embodiments of the sweeping process operation modes, the main sweeping system and the sweeping device 4 can be independently started to work, and can also be started to work simultaneously.
As alternative embodiments of the different functional components, the control functions of the front sweep control valve 8, the flyback control valve 12, and the auxiliary sweep control valve 16 may be implemented by a four-way valve, or by a combination of a three-way valve and a control valve.
As different functional part selection embodiments, the main purging system and/or the auxiliary purging system 3 can adopt a multi-channel nozzle combination, a conventional single-nozzle combination or a single-nozzle structure with a larger injection angle, and can realize the cleaning function.
(4) Blower system
Is arranged on a trolley frame 22 and consists of a set of blower assemblies 20 and a main air supply pipeline 21, and is used for generating high-speed air flow as power for blowing dust. The air flow generated by the blower is sent to the main purge system and the auxiliary purge system 3 through the main air supply pipeline 21 so as to remove dust on the surface of the photovoltaic panel. The motor and the speed reducer provide power for the operation of the blower, and can be independently arranged and connected with the blower through a transmission shaft; and may be integrally formed with the blower to form blower assembly 20, which may result in a compact arrangement of equipment, reduced weight, and reduced failure points. When self-distributing photovoltaic panel 29 is used for power supply, the system uses a direct current motor to generate power; when an external power source is used, an ac motor may be used to generate power. One end of the main air supply pipe 21 is connected with the front sweeping air pipe 7 of the front sweeping device 1 of the main sweeping system, the flyback air pipe 11 of the flyback device 2 and the auxiliary sweeping air pipe 15 of the auxiliary sweeping system 3 (the front sweeping air pipe 7, the flyback air pipe 11 and the auxiliary sweeping air pipe 15 are in a parallel state), and the other end is connected with the outlet pipe of the blower assembly 20.
(5) Walking device
The running gear comprises a trolley frame 22, a motor transmission device 23, a driving wheel 24, a supporting wheel 25, a guiding wheel 26 and the like. The trolley frame 22 is a base part for mounting and supporting other parts of the cleaning device, and is used for mounting a blowing system, a main purging system, an auxiliary purging system 3, a scraping and sweeping device 4, hardware facilities with a power supply device and an automatic control system, a motor transmission device 23 of a travelling device and the like, and carrying the facilities to move on a photovoltaic panel in the cleaning process; the motor transmission device 23 is used for providing power for the travelling device, the required power comes from the self-contained power supply device, and the driving wheel 24 is driven to rotate during operation, so that the travelling device moves along the photovoltaic panels, and the edge parts of the two sides of the photovoltaic panel strings can be used as tracks for the driving wheel 24 to travel; the supporting wheel 25 is arranged at the middle proper part of the travelling device and is contacted with the surface of the cleaned photovoltaic panel, so as to support the trolley frame 22, prevent the frame from deforming and ensure stable operation; one or more sets of support wheels 25 may be used depending on the size of the width of the trolley frame; the guide wheels 26 are used for restraining the movement direction of the running gear, are arranged on two sides of the photovoltaic plate string, the axes of the guide wheels are perpendicular to the surface of the photovoltaic plate, and the roller surfaces are matched with the side surfaces of the photovoltaic plate and roll along the side surfaces to prevent the running gear from deviating.
As a different cleaning embodiment, the running gear may be provided with a special track for supporting the driving wheel 24 instead of being supported by the surface of the photovoltaic panel, with the guiding wheel 26 being mounted at the outer edge of the track.
The edge portions of the driving wheel 24, the supporting wheel 25 and the guiding wheel 26 are made of soft rubber with elasticity or other similar materials so as to reduce impact and abrasion on the contacted surface and prevent damage to the photovoltaic panel and accessories thereof.
(6) Self-contained power supply device
For providing power to the operation of the cleaning device without having to connect an external power source. Including self-distributing photovoltaic panel 29, a set of energy storage facilities, a set of voltage transformation facilities and related accessories.
As a different embodiment, the power required by the cleaning device may be from the user's photovoltaic power station (before grid connection) or from the national grid. In both modes, the cleaning device does not need to be provided with a power supply device.
(7) Automatic control system
The intelligent control device is used for automatically controlling the running and operation of the cleaning device, and achieving the purposes of intelligent control and unattended operation; the operation parameters can be optimally set according to the conditions, and different operation conditions are met. Including control boards, signal receiving systems, signal transmitting systems, switching facilities, and other accessory components.
Example 4: technical effects of the invention
(1) High-speed air flow is adopted for blowing, so that the strength is high, the coverage is tight, dead angles are avoided, and dust cannot be remained at the corner parts of the surface of the photovoltaic panel; the air flow intensity is controllable, the rising height and the spreading width are limited, and adverse effects on the environment outside the photovoltaic panel arrangement area of the user are avoided;
(2) The contact type soft scraping and sweeping piece is adopted for scraping and sweeping, so that deep cleaning is realized;
(3) The two-stage and three-section combined cleaning can realize better cleaning strength and the effect of no residual ash at the transition part of the corner part;
(4) Cleaning the surface of a self-distribution photovoltaic plate with a self-powered device, ensuring sufficient power of the self-powered device and providing power conditions for ensuring reliable operation of equipment;
(5) The cleaning devices are operated in parallel simultaneously to synchronously purge the photovoltaic panels in multiple strings, dust moves forward along with the air flow surge, almost no opportunity of spreading to the periphery exists, and the cleaning efficiency and the cleaning effect are ensured;
(6) The soft scraping and sweeping sheets are arranged in a V shape, so that dust is scraped forwards and simultaneously is enabled to outwards incline along the scraping and sweeping sheets until the dust is pushed and scraped to gaps at two sides of the photovoltaic panel to fall;
(7) The small-size micro-sheets are sequentially overlapped and overlapped in a combined mode, so that the deformation of the scraping and sweeping sheets can be well avoided, and good contact with the surface of the photovoltaic panel is kept;
(8) The lower end of the soft scraping and sweeping piece is designed into a strip-shaped structure, so that the deformation of the scraping and sweeping piece is reduced, and the contact condition with the surface of the photovoltaic panel can be better improved;
(9) When the cleaning device returns, the scraping and sweeping sheet is lifted up, the scraping and sweeping operation is not performed any more, and only the working mode of sweeping and cleaning is selected, so that the possibility of secondary generation of residual dust accumulation at the corner of the photovoltaic panel is avoided;
(10) The multi-channel nozzle is selected, so that the noise is low, the air pressure condition requirement is relaxed, the air consumption is low, and the long-distance effective purging can be realized;
(11) Compared with the traditional rotary rolling sweeping mode, the cleaning device has fewer operating parts and low equipment failure rate.
Claims (8)
1. The utility model provides a photovoltaic board surface cleaning device, is the photovoltaic board cluster that the installation formed, its characterized in that including being the straight line arrangement: a travelling device is transversely arranged on one group or a plurality of adjacent groups of photovoltaic panel strings, a front scanning device (1), a scraping scanning device (4) and a retrace device (2) which transversely cover the surfaces of the photovoltaic panel strings are sequentially arranged on the travelling device from front to back, a blower system and an automatic control system are arranged on the travelling device, and the blower system is respectively connected with the front scanning device (1) and the retrace device (2); the automatic control system is respectively connected with the walking device, the front scanning device (1), the scraping and scanning device (4), the flyback device (2) and the blast system;
the front scanning device (1) comprises a front scanning installation pipe (6) arranged on the travelling device, a front scanning nozzle combination (5) is arranged on the front scanning installation pipe (6), the front scanning installation pipe (6) is communicated with a blower system through a front scanning air pipe (7), and a front scanning control valve (8) is arranged on the front scanning air pipe (7); the retrace device (2) comprises a retrace mounting pipe (10) arranged on the travelling device, a retrace nozzle combination (9) is arranged on the retrace mounting pipe (10), the retrace mounting pipe (10) is communicated with the blower system through a retrace connecting air pipe (11), and a retrace control valve (12) is arranged on the retrace connecting air pipe (11);
the scraping device (4) comprises a scraping executing piece (18) connected to the bottom of the travelling device through a scraping lifter (19), two groups of scraping sheets (17) are arranged at the tail end of the scraping executing piece (18), the two groups of scraping sheets (17) form a V-shaped structure, and the lower ends of the scraping sheets (17) are clung to the surface of the photovoltaic panel string.
2. The photovoltaic panel surface cleaning apparatus of claim 1, wherein: the walking device is provided with a self-distribution photovoltaic plate (29) and an auxiliary blowing system (3) erected on the surface of the self-distribution photovoltaic plate (29), and the auxiliary blowing system (3) is connected with a blowing system.
3. The photovoltaic panel surface cleaning apparatus of claim 1, wherein: the walking device comprises a trolley frame (22) with a motor transmission device (23) arranged on the upper portion, a driving wheel (24) connected with the motor transmission device (23) is arranged at the bottom of the trolley frame (22), a supporting wheel (25) is arranged at the middle position of the bottom of the trolley frame (22), and limit switches connected with an automatic control system are arranged on two ends of the trolley frame (22) in the walking direction.
4. The photovoltaic panel surface cleaning apparatus of claim 2, wherein: the self-distribution photovoltaic panel (29) is connected with an energy storage device and a voltage transformation device, and is respectively connected with a travelling device, a blowing system and an automatic control system; the auxiliary sweeping system (3) comprises an auxiliary sweeping installation pipe (14) arranged on the travelling device, an auxiliary sweeping nozzle combination (13) is arranged on the auxiliary sweeping installation pipe (14), the auxiliary sweeping installation pipe (14) is connected with the air blast system through an auxiliary sweeping air connection pipe (15), and an auxiliary sweeping control valve (16) is arranged on the auxiliary sweeping air connection pipe (15).
5. The photovoltaic panel surface cleaning apparatus of claim 1, wherein: the blowing system comprises a blower assembly (20) arranged on the travelling device, a main blowing pipeline (21) is connected to an air outlet of the blower assembly (20), and the main blowing pipeline (21) is respectively connected with a front sweeping air pipe (7) and a flyback air pipe (11).
6. The photovoltaic panel surface cleaning apparatus of claim 1, wherein: the scraping and sweeping piece (17) comprises a V-shaped installation framework (27), a plurality of soft micro-pieces (28) are fixed on the installation framework (27), adjacent micro-pieces (28) are overlapped in sequence from head to tail, the tail of the front micro-piece (28) is positioned in front of the head of the rear micro-piece (28), and the lower end parts of the micro-pieces (28) are a plurality of strips with gaps.
7. A photovoltaic panel surface cleaning apparatus as claimed in claim 3, wherein: guide wheels (26) positioned at the outer sides of the photovoltaic panel strings are arranged on two side edges of the trolley frame (22), the axes of the guide wheels (26) are perpendicular to the surfaces of the photovoltaic panel strings, and the roller surfaces of the guide wheels (26) are matched with the side surfaces of the photovoltaic panel strings and roll along the side surfaces; the edge portions of the driving wheel (24), the supporting wheel (25) and the guiding wheel (26) are all made of soft rubber materials.
8. The photovoltaic panel surface cleaning apparatus of claim 6, wherein: the gaps on the microchip (28) extend through the entire thickness of the microchip (28), but are not perpendicular to the working surface of the microchip (28), and the projections of the front and rear opening contours of the same gap on the microchip (28) in the thickness direction do not overlap and do not intersect.
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| CN113322828B (en) * | 2021-06-23 | 2022-10-25 | 中建七局交通建设有限公司 | Walking device and walking method of bridge hanging basket |
| CN116338033A (en) * | 2023-02-16 | 2023-06-27 | 杭州凯莱谱质造科技有限公司 | A liquid mass spectrometer with gas cleaning function and using method |
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