Photovoltaic module cleaning device based on unmanned aerial vehicle

Abstract

The invention relates to a photovoltaic module cleaning device based on an unmanned aerial vehicle, and relates to the technical field of photovoltaic cleaning, the photovoltaic module cleaning device comprises the unmanned aerial vehicle, a water tank and a cleaning cover, the water tank is fixedly connected with the bottom of the unmanned aerial vehicle, the cleaning cover is arranged below the unmanned aerial vehicle in a hoisting mode, and an adsorption assembly is arranged at a cover opening of the cleaning cover; a cleaning cover is arranged in the water tank, a spraying assembly is arranged in the cleaning cover, the spraying assembly is communicated with the water tank, a filtering assembly is further arranged in the cleaning cover, and the filtering assembly is communicated with the water tank. The photovoltaic panel cleaning device has the effects that water in the water tank is repeatedly used for cleaning different photovoltaic panels, and time and labor are saved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cleaning technology, and in particular to a photovoltaic component cleaning device based on a drone. Background Art

[0002] With the deteriorating environment and the continuous reduction of non-renewable energy, photovoltaic power generation has become one of the main clean energy sources. The number and scale of photovoltaic panels are also increasing. A large number of photovoltaic modules placed in the open air are prone to accumulate various external pollutants on the surface of the photovoltaic panels after a period of use, reducing the output capacity of the photovoltaic panels. Therefore, it is necessary to clean the surface of the photovoltaic panels regularly, mainly including gravel, bird droppings, etc. accumulated on the photovoltaic panels.

[0003] Existing drones for cleaning photovoltaic panels usually have their own water tanks and use water to spray and clean the surface of the photovoltaic panels. After the surface of the photovoltaic panel is cleaned, the drone needs to fly back to the water truck to return water for cleaning the next photovoltaic panel. The repeated movement between the photovoltaic panel and the water truck makes the cleaning efficiency low and is time-consuming and labor-intensive. Summary of the invention

[0004] In order to solve the above problems, the present application provides a photovoltaic module cleaning device based on a drone.

[0005] The photovoltaic module cleaning device provided in this application adopts the following technical solution:

[0006] A photovoltaic component cleaning device based on an unmanned aerial vehicle comprises an unmanned aerial vehicle, a water tank and a cleaning cover, wherein the water tank is fixedly connected to the bottom of the unmanned aerial vehicle, the cleaning cover is hoisted and arranged below the unmanned aerial vehicle, an adsorption component is arranged at the cover opening of the cleaning cover, a spray component is arranged in the cleaning cover, the spray component is connected to the water tank, a filter component is also arranged in the cleaning cover, and the filter component is connected to the water tank.

[0007] Furthermore, the adsorption assembly includes a connecting plate connected to the cover opening of the cleaning cover, a vacuum pump and two groups of connecting strips for fitting with the surface of the photovoltaic panel, one group of the connecting strips is fixedly connected to the outer edge of the connecting plate, and the other group of the connecting strips is fixedly connected to the inner edge of the connecting plate. The two groups of the connecting strips and the connecting plate enclose a vacuum cavity, and the vacuum pump is arranged on the top wall of the connecting plate and is used to evacuate the vacuum cavity.

[0008] Furthermore, the spray assembly includes a spray arm, a spray sleeve, a spring and a pulley. The spray arm is rotatably connected to the top wall of the inner shell of the cleaning cover. The spray sleeve is respectively mounted on both ends of the spray arm and the spray sleeve can move left and right along the plug-in direction at the end of the spray arm. The spring is arranged between the spray arm and the spray sleeve, and the pulley is arranged at the end of the spray sleeve.

[0009] Furthermore, a connecting ring plate is provided on the spray arm, a mounting ring plate is provided in the spray sleeve, one end of the spring is fixedly connected to the connecting ring plate, and the other end of the spring is fixedly connected to the mounting ring plate. When the peripheral wall of the pulley is in contact with the wide side of the cleaning cover, the spring is in a compressed state, a plurality of water outlets are provided on the bottom wall of the spray arm, and a plurality of through grooves are provided on the bottom wall of the spray sleeve.

[0010] Furthermore, a connecting pipe is provided on the top wall of the spray arm, and a rotating part for driving the connecting pipe to rotate is provided on the top wall of the cleaning cover, and the rotating part includes a driven gear, a driving gear and a rotating motor, the rotating motor is fixedly connected to the top wall of the cleaning cover, the driving gear is transmission-connected to the rotating motor, the driven gear and the connecting pipe are coaxially fixedly connected, and the driving gear and the driven gear are meshed.

[0011] Furthermore, a first water pump is connected to the water tank, a water outlet of the first water pump is connected to a water pumping pipe, and one end of the water pumping pipe away from the first water pump is connected to the connecting pipe via a rotating joint.

[0012] Furthermore, a second water pump is provided on the water tank, the second water pump is connected to the water suction pipe, and the water outlet end of the second water pump is connected to the water inlet of the water tank.

[0013] Furthermore, a filter screen for blocking the through hole is arranged on the filter tip.

[0014] Furthermore, the filter assembly includes a platform, a filter and a water suction pipe, one end of the filter is fixedly connected to the top wall of the platform, the other end of the filter is connected to the water suction pipe, the bottom wall of the platform is flush with the bottom wall of the connecting strip, and a plurality of filter holes are opened on the filter.

[0015] Furthermore, a winch is provided at the bottom of the drone, and a steel cable of the winch is fixedly connected to the top wall of the cleaning cover.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] 1. When cleaning the surface of the photovoltaic panel, first use the drone to fly with the cleaning cover to the photovoltaic panel to be cleaned, use the winch to lower the cleaning cover, let the bottom wall of the connecting strip fit with the photovoltaic panel, use the vacuum pump to make the cleaning cover adsorb on the photovoltaic panel, and then use the spray arm to spray and clean the photovoltaic panel inside the cleaning cover. The cleaned water is stored in the cleaning cover, and impurities such as gravel are deposited at the bottom of the inclined surface of the photovoltaic panel. The platform is used to separate the impurities such as gravel and water, and the second water pump is used to pump the upper clear liquid into the water tank through the filter screen to realize water recovery, which is convenient for cleaning the next photovoltaic panel, reducing the time and frequency of the drone changing water back and forth, which is conducive to improving the cleaning efficiency of the photovoltaic panel;

[0018] 2. The automatic rotation of the spray arm is realized by the rotating part. When the spray arm rotates to be parallel to the wide side, the spring restores its natural length, and the spray sleeve moves along the length direction of the spray arm, and the spray sleeve extends. At this time, the spray range is increased, the cleaning efficiency is improved, and it is conducive to adapting to the rectangular photovoltaic panel and achieving a good cleaning effect. When the spray arm rotates to be perpendicular to the wide side, the pulley and the inner wall of the cleaning cover are first abutted, and the pulley drives the spray sleeve to move, and the spray sleeve retracts. At this time, the spring is compressed;

[0019] 3. By using drones equipped with cleaning devices, efficient and automated cleaning of photovoltaic modules is achieved, reducing the tediousness and danger of manual cleaning and improving cleaning efficiency and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a photovoltaic module cleaning device based on a drone in an embodiment of the present application.

[0021] Figure 2 It is a schematic diagram of the overall structure of the cleaning cover in the embodiment of the present application.

[0022] Figure 3 It is a schematic diagram of the overall structure of the spray assembly used to reflect the embodiment of the present application.

[0023] Figure 4 for Figure 3 Section view of the AA plane.

[0024] Description of reference numerals: 1, unmanned aerial vehicle; 2, water tank; 3, cleaning cover; 4, adsorption assembly; 41, connecting plate; 42, vacuum pump; 43, connecting strip; 5, spraying assembly; 51, spraying arm; 52, spraying sleeve; 53, spring; 54, pulley; 6, filtering assembly; 61, platform; 62, filter nozzle; 63, water suction pipe; 7, rotating member; 71, driven gear; 72, driving gear; 73, rotating motor; 8, through hole; 9, support frame; 10, battery pack; 11, mounting plate; 12, winch; 13, vacuum chamber; 14, connecting ring plate; 15, mounting ring plate; 16, water outlet; 17, through slot; 18, connecting pipe; 19, water extraction pipe; 20, rotary joint; 21, filtering hole; 22, guiding plate; 23, inclined surface. Detailed implementation manners

[0025] The following further describes the present application in detail with reference to the Figure 1-4 accompanying drawings.

[0026] An embodiment of the present application discloses a cleaning device for photovoltaic modules based on an unmanned aerial vehicle.

[0027] Referring to Figure 1 and Figure 2 , a cleaning device for photovoltaic modules based on an unmanned aerial vehicle includes an unmanned aerial vehicle 1, a water tank 2, and a cleaning cover 3. "U"-shaped support frames 9 are arranged on both sides of the bottom of the unmanned aerial vehicle 1. A mounting plate 11 is arranged between the two support frames 9. The battery pack 10, the mounting plate 11, and the water tank 2 are sequentially arranged between the two support frames 9. The cleaning cover 3 is hoisted and arranged below the unmanned aerial vehicle 1 through a winch 12. The winch 12 is fixedly connected to the bottom wall of the mounting plate 11, and the steel cable of the winch 12 is fixedly connected to the top wall of the cleaning cover 3. In this embodiment, the cleaning cover 3 is in a cuboid shape, the cover opening of the cleaning cover 3 is arranged at the bottom end far from the unmanned aerial vehicle 1, an adsorption assembly 4 is arranged at the cover opening of the cleaning cover 3, a spraying assembly 5 is arranged inside the cleaning cover 3, the spraying assembly 5 is communicated with the water tank 2, and a filtering assembly 6 is also arranged inside the cleaning cover 3, and the filtering assembly 6 is communicated with the water tank 2.

[0028] Referring to Figure 2 , the adsorption assembly 4 includes a connecting plate 41 connected to the cover opening of the cleaning cover 3, a vacuum pump 42, and two groups of connecting strips 43 for fitting with the surface of the photovoltaic panel. In this embodiment, the connecting plate 41 and the two groups of connecting strips 43 are both annular. One group of connecting strips 43 is fixedly connected to the outer edge of the connecting plate 41, and the other group of connecting strips 43 is fixedly connected to the inner edge of the connecting plate 41. The two groups of connecting strips 43 and the connecting plate 41 enclose to form a vacuum chamber 13. The longitudinal sections of the connecting plate 41 and the two connecting strips 43 are in an inverted "U" shape. The vacuum pump 42 is arranged on the top wall of the connecting plate 41 and is used for evacuating the vacuum chamber 13.

[0029] The vacuum chamber 13 formed by the vacuum pump 42 and the connecting strip 43 can adsorb and adhere the cleaning cover 3 to the surface of the photovoltaic panel, so that the cleaning cover 3 is stable during the cleaning process and does not fall off the surface of the photovoltaic panel, and the cleaned water is concentrated in the cleaning cover 3, thereby improving the uniformity and effect of cleaning.

[0030] Reference Figure 3 and Figure 4 The spray assembly 5 includes a spray arm 51, a spray sleeve 52, a spring 53 and a pulley 54. The spray arm 51 is rotatably connected and arranged on the top wall of the inner shell of the cleaning cover 3. The spray sleeve 52 is respectively sleeved on both ends of the spray arm 51 and the spray sleeve 52 can move left and right along the plug-in direction at the end of the spray arm 51. The spring 53 is arranged between the spray arm 51 and the spray sleeve 52. The pulley 54 is arranged at the end of the spray sleeve 52. In this embodiment, two pulleys 54 are symmetrically arranged at the end of each spray sleeve 52, and the axis of the pulley 54 is parallel to the rotation axis of the spray arm 51.

[0031] A "U"-shaped connecting ring plate 14 is sleeved on the spray arm 51, and a "U"-shaped mounting ring plate 15 is provided in the spray sleeve 52. The connecting ring plate 14 and the mounting ring plate 15 are symmetrically arranged. One end of the spring 53 is fixedly connected to the connecting ring plate 14, and the other end of the spring 53 is fixedly connected to the mounting ring plate 15. When the peripheral wall of the pulley 54 abuts against the wide side of the cleaning cover 3, the spring 53 is in a compressed state. A plurality of water outlets 16 are provided on the bottom wall of the spray arm 51, and a plurality of through grooves 17 are provided on the bottom wall of the spray sleeve 52.

[0032] The top wall of the spray arm 51 is connected to a connecting pipe 18, which passes through the top wall of the cleaning cover 3 and extends out. A rotating member 7 for driving the connecting pipe 18 to rotate is provided on the top wall of the cleaning cover 3. The rotating member 7 includes a driven gear 71, a driving gear 72 and a rotating motor 73. The rotating motor 73 is fixedly connected to the top wall of the cleaning cover 3, the driving gear 72 is transmission-connected to the rotating motor 73, the driven gear 71 is coaxially fixedly connected to the connecting pipe 18, and the driving gear 72 is meshed with the driven gear 71.

[0033] A first water pump is connected to the water tank 2 , and a water pumping pipe 19 is connected to the water outlet of the first water pump. One end of the water pumping pipe 19 away from the first water pump is connected to the connecting pipe 18 via a rotating joint 20 .

[0034] When the spring 53 returns to its naturally extended state, the through slot 17 and the inside of the spray sleeve 52 are connected, and the water on the spray arm 51 flows through the spray sleeve 52 and out of the through slot 17. A guide plate 22 is provided outside the through slot 17, and a slope 23 is provided on the guide plate 22. The slope 23 is used to guide the water in the spray sleeve 52 to flow around the photovoltaic panel through the slope 23, which is conducive to achieving a comprehensive cleaning of the surface of the photovoltaic panel and achieving a good cleaning effect. The driving gear 72 is driven to rotate by the rotating motor 73, and the driving gear 72 drives the driven gear 71 to rotate, and the driven gear 71 drives the connecting gear 73 to rotate. The pipe 18 and the spray arm 51 rotate to realize the automatic rotation of the spray arm 51. When the spray arm 51 rotates to be parallel to the wide side, the spring 53 restores its natural length, and the spray sleeve 52 moves along the length direction of the spray arm 51. The spray sleeve 52 extends, and the spray range is increased, and the cleaning efficiency is improved, which is conducive to adapting to the rectangular photovoltaic panel and achieving a good cleaning effect. When the spray arm 51 rotates to be perpendicular to the wide side, the pulley 54 first abuts against the inner wall of the cleaning cover 3, and the pulley 54 drives the spray sleeve 52 to move, and the spray sleeve 52 retracts. At this time, the spring 53 is compressed.

[0035] Reference Figure 1 and Figure 2 The filter assembly 6 includes a platform 61, a filter 62 and a water suction pipe 63. One end of the filter 62 is fixedly connected to the top wall of the platform 61, and the other end of the filter 62 is connected to the water suction pipe 63. The end of the water suction pipe 63 away from the filter 62 passes through the top wall of the cleaning cover 3. The bottom wall of the platform 61 is flush with the bottom wall of the connecting strip 43. A plurality of filter holes 21 are provided on the filter 62. A filter screen for blocking the through hole 8 is provided on the filter 62. A second water pump is provided on the water tank 2. The second water pump is connected to the water suction pipe 63, and the water outlet end of the second water pump is connected to the water inlet of the water tank 2.

[0036] The cleaned water is stored in the cleaning cover 3, and impurities such as gravel are deposited at the bottom of the inclined surface of the photovoltaic panel. The platform 61 is used to separate impurities such as gravel and water, and the upper clear liquid is pumped into the water tank 2 through the filter by a second water pump to achieve water recovery. Since the suction pipe 63 is long, the water that cannot be sucked into the water tank 2 flows out of the suction pipe 63 to achieve backwashing of the filter, and the clogging of the filter is avoided as much as possible. By collecting the water, it is convenient to clean the next photovoltaic panel, reducing the time and frequency of the drone 1 changing water back and forth, which is beneficial to improving the cleaning efficiency of the photovoltaic panel.

[0037] The implementation principle of a photovoltaic component cleaning device based on a drone in an embodiment of the present application is as follows: when cleaning the surface of a photovoltaic panel, first use the drone 1 to fly with the cleaning cover 3 above the photovoltaic panel to be cleaned, use the winch 12 to lower the cleaning cover 3, let the bottom wall of the connecting strip 43 fit the photovoltaic panel, use the vacuum pump 42 to make the cleaning cover 3 adsorbed on the photovoltaic panel, and then use the spray arm 51 to spray and clean the photovoltaic panel inside the cleaning cover 3, the cleaned water is stored in the cleaning cover 3, and impurities such as gravel are deposited at the bottom of the inclined surface of the photovoltaic panel. The platform 61 is used to separate impurities such as gravel and water, and the upper clear liquid is pumped into the water tank 2 through the filter screen by a second water pump to realize water recovery, which is convenient for cleaning the next photovoltaic panel, reducing the time and frequency of the drone 1 changing water back and forth, and is beneficial to improving the cleaning efficiency of the photovoltaic panel.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A photovoltaic module cleaning device based on an unmanned aerial vehicle, characterized in that: The invention comprises an unmanned aerial vehicle (1), a water tank (2) and a cleaning cover (3), wherein the water tank (2) is fixedly connected to the bottom of the unmanned aerial vehicle (1), the cleaning cover (3) is hoisted and arranged below the unmanned aerial vehicle (1), an adsorption component (4) is arranged at the cover opening of the cleaning cover (3), a spray component (5) is arranged inside the cleaning cover (3), the spray component (5) is connected to the water tank (2), and a filter component (6) is also arranged inside the cleaning cover (3), the filter component (6) is connected to the water tank (2).

2. The photovoltaic module cleaning device based on a drone according to claim 1, characterized in that: The adsorption assembly (4) comprises a connecting plate (41) connected to the hood opening of the cleaning hood (3), a vacuum pump (42) and two groups of connecting strips (43) for contacting with the surface of the photovoltaic panel, wherein one group of the connecting strips (43) is fixedly connected to the outer edge of the connecting plate (41), and the other group of the connecting strips (43) is fixedly connected to the inner edge of the connecting plate (41), and the two groups of the connecting strips (43) and the connecting plate (41) enclose a vacuum chamber (13), and the vacuum pump (42) is arranged on the top wall of the connecting plate (41) and is used to evacuate the vacuum chamber (13).

3. The photovoltaic module cleaning device based on a drone according to claim 1, characterized in that: The spray assembly (5) comprises a spray arm (51), a spray sleeve (52), a spring (53) and a pulley (54); the spray arm (51) is rotatably connected and arranged on the top wall of the inner shell of the cleaning cover (3); the spray sleeve (52) is respectively arranged on both ends of the spray arm (51) and the spray sleeve (52) can move left and right along the plug-in direction at the end of the spray arm (51); the spring (53) is arranged between the spray arm (51) and the spray sleeve (52); and the pulley (54) is arranged at the end of the spray sleeve (52).

4. The photovoltaic module cleaning device based on a drone according to claim 3, characterized in that: The spray arm (51) is sleeved with a connecting ring plate (14), the spray sleeve (52) is provided with a mounting ring plate (15), one end of the spring (53) is fixedly connected to the connecting ring plate (14), and the other end of the spring (53) is fixedly connected to the mounting ring plate (15); when the peripheral wall of the pulley (54) abuts against the wide side of the cleaning cover (3), the spring (53) is in a compressed state, the bottom wall of the spray arm (51) is provided with a plurality of water outlets (16), and the bottom wall of the spray sleeve (52) is provided with a plurality of through grooves (17).

5. The photovoltaic module cleaning device based on a drone according to claim 3, characterized in that: The top wall of the spray arm (51) is connected to a connecting pipe (18), and the top wall of the cleaning cover (3) is provided with a rotating member (7) for driving the connecting pipe (18) to rotate. The rotating member (7) comprises a driven gear (71), a driving gear (72) and a rotating motor (73). The rotating motor (73) is fixedly connected to the top wall of the cleaning cover (3), the driving gear (72) and the rotating motor (73) are transmission-connected, the driven gear (71) and the connecting pipe (18) are coaxially fixedly connected, and the driving gear (72) and the driven gear (71) are meshed.

6. The photovoltaic module cleaning device based on a drone according to claim 5, characterized in that: The water tank (2) is connected to a first water pump, the water outlet of the first water pump is connected to a water pump pipe (19), and the end of the water pump pipe (19) away from the first water pump is connected to the connecting pipe (18) via a rotating joint (20).

7. The photovoltaic module cleaning device based on a drone according to claim 2, characterized in that: The water tank (2) is provided with a second water pump, the second water pump is connected to the water suction pipe (63), and the water outlet of the second water pump is connected to the water inlet of the water tank (2).

8. The photovoltaic module cleaning device based on a drone according to claim 7, characterized in that: The filter tip (62) is provided with a filter screen for blocking the through hole (8).

9. The photovoltaic module cleaning device based on drone according to claim 7, characterized in that: The filter assembly (6) comprises a base (61), a filter (62) and a water suction pipe (63); one end of the filter (62) is fixedly connected to the top wall of the base (61); the other end of the filter (62) is connected to the water suction pipe (63); the bottom wall of the base (61) is flush with the bottom wall of the connecting strip (43); and a plurality of filter holes (21) are provided on the filter (62).

10. The photovoltaic module cleaning device based on a drone according to claim 1, characterized in that: A winch (12) is provided at the bottom of the drone (1), and a steel cable of the winch (12) is fixedly connected to the top wall of the cleaning cover (3).

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