An unmanned aerial vehicle cleaning device for photovoltaic modules

Abstract

The utility model discloses an unmanned plane cleaning device of photovoltaic module relates to photovoltaic technical field, and unmanned plane cleaning device is used for cleaning the surface of photovoltaic board erected on support frame, and it includes: unmanned plane body and spray bar subassembly, the inside setting of unmanned plane body has the water storage tank, and the spray bar subassembly rotatablely installed in unmanned plane body downside, and the spray bar subassembly communicates with the water storage tank through high pressure plunger water pump group, and the end of spray bar subassembly is provided with sectoral shower nozzle away from unmanned plane body, and the spray bar subassembly has the working state in vertical direction and the takeoff state in horizontal direction, and the spray bar subassembly can rotate to the direction away from photovoltaic board, to switch it from working state to takeoff state. Set up like this, can improve the cleaning coverage area, and improve the cleaning pressure of water flow when keeping the safe flight height, improve the cleaning effect.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic technology, and in particular to a drone cleaning device for photovoltaic modules. Background Technology

[0002] With the continuous increase in global photovoltaic installed capacity, the demand for photovoltaic module cleaning is also rising. Traditional methods are difficult to meet the large-scale cleaning needs, and photovoltaic power plant operation and maintenance are gradually developing towards intelligence and automation. Drone cleaning will become an important technical means.

[0003] Existing drone cleaning technologies use high-power water pumps tethered or low-power water pumps to clean photovoltaic modules using methods such as water jet cleaning, oscillating water jet cleaning, and fixed water jet cleaning. However, from the perspective of cleaning effectiveness, these technologies have certain drawbacks and limitations:

[0004] 1) Water jet cleaning does not cover the area evenly and cannot achieve 100% effective cleaning.

[0005] 2) Water jet cleaning is prone to splashing, which can easily leave water stains after cleaning;

[0006] 3) For flight safety reasons, drones need to maintain a certain altitude during operation. For photovoltaic modules with large installation angles, the water jet sprayed from the nozzle will atomize at this altitude, which will greatly reduce the cleaning force of the water jet and fail to achieve the best cleaning effect.

[0007] Therefore, how to provide a drone cleaning device for photovoltaic modules to at least partially solve the above problems is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0008] The purpose of this invention is to provide a drone cleaning device for photovoltaic modules, which can increase the cleaning coverage area and increase the cleaning pressure of the water flow while maintaining a safe flight altitude, thereby improving the cleaning effect.

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A drone cleaning device for photovoltaic modules, used to clean the surface of photovoltaic panels mounted on a support frame, includes:

[0011] The drone itself has an internal water tank.

[0012] The spray boom assembly is rotatably mounted on the underside of the UAV body. The spray boom assembly is connected to the water tank via a high-pressure plunger water pump set. A fan-shaped nozzle is provided at the end of the spray boom assembly away from the UAV body. The spray boom assembly has a working state in the vertical direction and a take-off state in the horizontal direction. The spray boom assembly can rotate in a direction away from the photovoltaic panel to switch it from the working state to the take-off state.

[0013] Preferably, the spray bar assembly includes:

[0014] The main spray bar is rotatably connected to the two legs on the lower side of the UAV body via a movable clamp, and the main spray bar is connected to the high-pressure plunger water pump group;

[0015] Several auxiliary spray bars are vertically connected to the main spray bar. The auxiliary spray bars are connected to the main spray bar, and the fan-shaped nozzle is installed at the end of the auxiliary spray bar away from the main spray bar.

[0016] Preferably, the plurality of the auxiliary spray bars are parallel to each other and equally spaced, and the straight line formed by the fan-shaped nozzles is parallel to the photovoltaic panel.

[0017] Preferably, a motor mount is provided on the lower side of the UAV body, and a spray bar drive motor is installed in the motor mount. The main spray bar is connected to the spray bar drive motor.

[0018] Preferably, the main spray bar is connected to the spray bar drive motor via a transmission gear pair.

[0019] Preferably, a distance sensor is provided at the end of the auxiliary spray bar away from the main spray bar, and the distance sensor is used to detect the distance between it and the surface of the photovoltaic panel.

[0020] Preferably, the distance between the fan-shaped nozzle and the photovoltaic panel is maintained between 300 and 500 mm.

[0021] Preferably, the spray range of the fan-shaped nozzle includes a first limit boundary and a second limit boundary, and each adjacent first limit boundary and second limit boundary overlaps.

[0022] Preferably, the rotation angle of the spray bar assembly is 90°.

[0023] Preferably, a pressurizing device is provided between the auxiliary spray bar and the fan-shaped nozzle.

[0024] Compared to the aforementioned background technology, the present invention provides a drone cleaning device for photovoltaic modules, used to clean the surface of photovoltaic panels mounted on a support frame. The device includes: a drone body and a spray boom assembly; a water tank is installed inside the drone body; the spray boom assembly is rotatably mounted on the underside of the drone body; the spray boom assembly is connected to the water tank via a high-pressure plunger water pump set; a fan-shaped nozzle is provided at the end of the spray boom assembly away from the drone body; the spray boom assembly has a working state in the vertical direction and a take-off state in the horizontal direction; the spray boom assembly can rotate away from the photovoltaic panel to switch it from the working state to the take-off state.

[0025] Specifically, the water tank installed on the drone can store a certain amount of water. When in use, the drone can fly to the photovoltaic panel to be cleaned through its flight control system. It should be noted that there is a rotatable spray boom assembly at the bottom of the drone. The spray boom assembly can switch between different states by rotating, specifically working state and take-off state. Before the drone starts cleaning, in order to prevent the spray boom assembly from colliding with the photovoltaic panel during the drone's flight and thus ensure flight safety, the spray boom assembly will rotate to a horizontal position, i.e., the take-off state. When the drone has flown to the desired position, the spray boom assembly will rotate to a vertical position. In this case, the fan-shaped nozzle installed at the end of the spray boom assembly is very close to the surface of the photovoltaic panel. Under the action of the high-pressure plunger water pump, the water sprayed from the fan-shaped nozzle has a high water pressure when it reaches the surface of the photovoltaic panel, thereby improving the cleaning effect. Furthermore, because the fan-shaped nozzle is close to the surface of the photovoltaic panel, it can avoid the water flow atomization caused by excessive spraying height, which would affect the cleaning effect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of the drone cleaning device provided in an embodiment of the present utility model;

[0028] Figure 2 for Figure 1 Another structural diagram from a different angle.

[0029] in:

[0030] 01-Support frame, 02-Photovoltaic panel;

[0031] 1-UAV body, 2-High-pressure plunger water pump set, 3-Fan-shaped nozzle, 4-Main spray bar, 5-Modible clamp, 6-Secondary spray bar, 7-Motor mount, 8-Spray bar drive motor, 9-Transmission gear pair, 10-First limit boundary, 11-Second limit boundary. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left" and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model.

[0035] The purpose of this invention is to provide a drone cleaning device for photovoltaic modules, which can increase the cleaning coverage area and increase the cleaning pressure of the water flow while maintaining a safe flight altitude, thereby improving the cleaning effect.

[0036] To achieve the above objectives, the present invention provides the following technical solution:

[0037] Please see Figure 1 and Figure 2 This embodiment provides a drone cleaning device for photovoltaic modules, used to clean the surface of photovoltaic panels 02 mounted on a support frame 01. The device includes a drone body 1 and a spray boom assembly. The drone body 1 has a water tank inside. The spray boom assembly is rotatably mounted on the lower side of the drone body 1. The spray boom assembly is connected to the water tank through a high-pressure plunger water pump set 2. A fan-shaped nozzle 3 is provided at the end of the spray boom assembly away from the drone body 1. The spray boom assembly has a working state in the vertical direction and a take-off state in the horizontal direction. The spray boom assembly can rotate in a direction away from the photovoltaic panel 02 to switch it from the working state to the take-off state.

[0038] Specifically, the drone body 1 can be an existing water tank cleaning drone, which is equipped with a water tank and can fly normally when the water tank is full. A spray boom assembly is installed on the lower side of the drone body 1. The spray boom assembly is a rigid tubular structure, and its internal channel is connected to the water tank through a high-pressure plunger water pump group 2. The high-pressure plunger water pump group 2 can draw water from the water tank and introduce it into the spray boom assembly. Since the lower end of the spray boom assembly is provided with a fan-shaped nozzle 3, the water will be sprayed out in a certain spray shape. In this embodiment, the fan-shaped nozzle 3 is specifically a fan-shaped nozzle 3 with a flow stabilization function, which can spray water in the shape of a fan-shaped water jet.

[0039] In other words, the water tank installed on the drone body 1 can store a certain amount of water. When in use, the drone body 1 can fly to the photovoltaic panel 02 to be cleaned through its flight control system. It should be noted that there is a rotatable spray boom assembly at the bottom of the drone body 1. The spray boom assembly can switch between different states by rotating, specifically the working state and the take-off state. When the drone body 1 has not started cleaning, in order to prevent the spray boom assembly from colliding with the photovoltaic panel 02 during the flight of the drone body 1 and thus ensure its flight safety, the spray boom assembly will rotate to a horizontal position, that is, the take-off state. When the drone body 1 has flown to the position, the spray boom assembly will rotate to a vertical position. In this case, the fan-shaped nozzle 3 installed at the end of the spray boom assembly is very close to the surface of the photovoltaic panel 02. Thus, under the action of the high-pressure plunger water pump group 2, the water sprayed from the fan-shaped nozzle 3 still has a high water pressure when it reaches the surface of the photovoltaic panel 02, thereby improving the cleaning effect on its surface. Furthermore, because the fan-shaped nozzle 3 is close to the surface of the photovoltaic panel 02, it can avoid the water flow from atomizing due to excessive spraying height, which would affect the cleaning effect.

[0040] Preferably, the spray bar assembly includes: a main spray bar 4 and several auxiliary spray bars 6; the main spray bar 4 is rotatably connected to the two legs on the lower side of the UAV body 1 via a movable clamp 5, and the main spray bar 4 is connected to the high-pressure plunger water pump group 2; the several auxiliary spray bars 6 are all vertically connected to the main spray bar 4, the auxiliary spray bars 6 are connected to the main spray bar 4, and the end of the auxiliary spray bar 6 away from the main spray bar 4 is equipped with a fan-shaped nozzle 3.

[0041] Specifically, such as Figure 1 As shown, the main spray bar 4 is horizontally set and is rotatably mounted on the lower side of the drone body 1. In order to ensure the stability and convenience of the installation of the main spray bar 4, the main spray bar 4 is directly connected to the support leg set on the lower side of the drone body 1 through the movable clamp 5. The distance between the two ends of the main spray bar 4 and the corresponding side support leg is the same. That is, the main spray bar 4 is symmetrically set with respect to the drone body 1.

[0042] Several auxiliary spray rods 6 are vertically connected to the circumferential sidewall of the main spray rod 4. The auxiliary spray rods 6 are connected to the main spray rod 4, and a fan-shaped nozzle 3 is installed at the end of the auxiliary spray rod 6 away from the main spray rod 4. That is, the main spray rod 4 delivers water to the auxiliary spray rods 6, and the auxiliary spray rods 6 are responsible for passing water into the fan-shaped nozzle 3. The position of the auxiliary spray rods 6 will change as the main spray rod 4 rotates. When the UAV body 1 is not cleaning, that is, when adjusting its position during flight, it can be flipped upward until it reaches a horizontal position. In this way, the risk of collision between the spray rod assembly and the photovoltaic panel 02 caused by the UAV body 1 during flight can be reduced, thereby ensuring the safe take-off and landing of the UAV body 1. When the UAV body 1 starts cleaning, the auxiliary spray rods 6 can be flipped downward, so that the distance between the fan-shaped nozzle 3 and the surface of the photovoltaic panel 02 can be reduced as much as possible while ensuring a safe flight altitude. This can avoid water atomization caused by excessive spraying height, which would affect the cleaning effect.

[0043] It should be noted that the lengths of the several auxiliary spray booms 6 in this embodiment can be adjusted according to actual conditions, such as the flight safety altitude of the UAV body 1, the height of the photovoltaic panel 02, etc., which are not specifically limited here.

[0044] Preferably, several secondary spray bars 6 are parallel to each other and equally spaced, and the straight line formed by the fan-shaped nozzles 3 is parallel to the photovoltaic panel 02.

[0045] Understandably, photovoltaic panels 02 are generally installed using support frames 01, but they are usually installed at an angle. Therefore, in this embodiment, to ensure that the fan-shaped nozzles 3 on the auxiliary spray bars 6 at different positions are at the optimal cleaning height during cleaning, the lengths of the auxiliary spray bars 6 in this embodiment also vary with the tilt angle of the upper surface of the photovoltaic panel 02, specifically as follows: Figure 1 As shown, it should be noted that in order to ensure that each fan-shaped nozzle 3 has the same cleaning effect, the straight line formed by the fan-shaped nozzles 3 is parallel to the upper surface of the photovoltaic panel 02. With this setting, when the auxiliary spray bar 6 is flipped to the working state, it can be ensured that the distance between each fan-shaped nozzle 3 and the surface of the photovoltaic panel 02 is equal, which makes it convenient for the drone body 1 to adjust to the optimal cleaning height.

[0046] Preferably, a motor mount 7 is provided on the lower side of the UAV body 1, and a spray bar drive motor 8 is installed in the motor mount 7. The main spray bar 4 is connected to the spray bar drive motor 8 for transmission.

[0047] Specifically, such as Figure 2As shown, in this embodiment, in order to drive the main spray bar 4 to rotate, a spray bar drive motor 8 is provided on the lower side of the drone body 1. Furthermore, in order to install the spray bar drive motor 8, a motor mount 7 is provided on the lower side of the drone body 1. Of course, the spray bar drive motor 8 can also be installed on the lower side of the drone body 1 in other ways. After the spray bar drone is installed, its movable end can be connected to the main spray bar 4 through a synchronous belt or other transmission method.

[0048] Preferably, the main spray bar 4 is connected to the spray bar drive motor 8 via a transmission gear pair 9.

[0049] Specifically, such as Figure 2 As shown, in this embodiment, in order to accurately control the rotation angle of the main spray bar 4 and reduce its rotation error, the main spray bar 4 and the movable end of the spray bar drive motor 8 are connected through a transmission gear pair 9.

[0050] Preferably, a distance sensor is provided at the end of the auxiliary spray bar 6 away from the main spray bar 4. The distance sensor is used to detect the distance between it and the surface of the photovoltaic panel 02.

[0051] In one embodiment, in order to accurately control the flight altitude of the drone body 1 and thus ensure the optimal cleaning height of the fan-shaped nozzle 3, a distance sensor can be installed on the auxiliary spray bar 6 near the fan-shaped nozzle 3. The sensor can detect the height of the fan-shaped nozzle 3 from the upper surface of the photovoltaic panel 02, and the operator can adjust the flight altitude of the drone body 1 according to this height.

[0052] Preferably, the distance between the fan-shaped nozzle 3 and the photovoltaic panel 02 is maintained between 300 and 500 mm.

[0053] In this embodiment, the optimal cleaning height of the fan-shaped nozzle 3 is preferably between 300 and 500 mm from the surface of the photovoltaic panel 02. Within this height range, both the safe flight altitude of the drone body 1 and the water pressure intensity can be guaranteed.

[0054] Preferably, the spray range of the fan-shaped nozzle 3 includes a first limit boundary 10 and a second limit boundary 11, and each adjacent first limit boundary 10 and second limit boundary 11 overlaps.

[0055] Specifically, such as Figure 1As shown, the spray range of the fan-shaped nozzle 3 in this embodiment has two boundaries, namely the first limit boundary 10 and the second limit boundary 11. In order to ensure that the coverage area of ​​the fan-shaped nozzle 3 on the auxiliary spray bar 6 can cover the entire photovoltaic panel 02 and achieve 100% area efficient cleaning, the spray range between each two adjacent fan-shaped nozzles 3 will overlap slightly, that is, each adjacent first limit boundary 10 and second limit boundary 11 will have overlapping parts. In this way, the cleaning efficiency and cleaning effect of the photovoltaic panel 02 can be greatly improved.

[0056] Preferably, the rotation angle of the spray bar assembly is 90°.

[0057] In this embodiment, the rotation angle of the spray bar assembly is 90°. Of course, the rotation angle can also be adjusted according to the actual situation. In the take-off state, it can ensure the safe flight altitude of the drone body 1, and in the working state, it can ensure that the fan-shaped nozzle 3 is at the optimal cleaning height.

[0058] Preferably, a pressurizing device is provided between the auxiliary spray bar 6 and the fan-shaped nozzle 3.

[0059] Understandably, in order to enhance the cleaning effect of the fan-shaped nozzle 3, a pressurizing device can be installed between the auxiliary spray bar 6 and the fan-shaped nozzle 3 to increase the pressure of the sprayed water, thereby improving the cleaning ability of the sprayed water jet.

[0060] In summary, the drone cleaning device provided in this application comprises: a drone body 1, a spray boom drive motor 8, a high-pressure plunger water pump assembly 2, a transmission gear pair 9, a main spray boom 4, a secondary spray boom 6, a movable clamp 5, and a fan-shaped nozzle 3. The drone starts and moves to the end of the photovoltaic module array. The drone flight control system controls the drone to maintain a height of 1 meter above the photovoltaic modules. The battery of the drone body 1 powers the spray boom drive motor 8, which drives the transmission gear pair 9 to rotate the horizontally positioned spray boom assembly 90°. The spray boom assembly rotates from a horizontal position to a... In a vertical position, the flow-stabilizing fan-shaped nozzles 3 at the ends of each adjustable spray bar are kept at a height of 300-500mm above the upper surface of the photovoltaic panel 02. The battery-powered high-pressure plunger water pump assembly 2 draws water from the water tank, which is then sprayed onto the surface of the photovoltaic panel 02 through the spray bars and the flow-stabilizing fan-shaped nozzles 3, forming a linear water jet. As the drone 1 flies from one end of the photovoltaic module array to the other, it completes 100% full-area, highly efficient cleaning, improving cleaning efficiency while avoiding missed areas. After the cleaning operation is completed, the spray bar drive motor 8 rotates the spray bar assembly 90°, returning it from a vertical to a horizontal position, achieving optimal nozzle cleaning while ensuring safe take-off and landing of the drone.

[0061] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0063] The embodiments provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A drone cleaning device for photovoltaic modules, used to clean the surface of photovoltaic panels (02) mounted on a support frame (01), characterized in that, include: The drone body (1) has a water tank inside. The spray boom assembly is rotatably mounted on the underside of the UAV body (1). The spray boom assembly is connected to the water tank through a high-pressure plunger water pump group (2). A fan-shaped nozzle (3) is provided at the end of the spray boom assembly away from the UAV body (1). The spray boom assembly has a working state in the vertical direction and a take-off state in the horizontal direction. The spray boom assembly can rotate in a direction away from the photovoltaic panel (02) to switch it from the working state to the take-off state.

2. The drone cleaning device for photovoltaic modules according to claim 1, characterized in that, The spray bar assembly includes: The main spray bar (4) is rotatably connected to the two legs on the lower side of the UAV body (1) via a movable clamp (5), and the main spray bar (4) is connected to the high-pressure plunger water pump group (2); Several auxiliary spray rods (6) are vertically connected to the main spray rod (4). The auxiliary spray rods (6) are connected to the main spray rod (4). The fan-shaped nozzle (3) is installed at the end of the auxiliary spray rod (6) away from the main spray rod (4).

3. The drone cleaning device for photovoltaic modules according to claim 2, characterized in that, Several of the auxiliary spray bars (6) are parallel to each other and equally spaced, and the straight line formed by the fan-shaped nozzles (3) is parallel to the photovoltaic panel (02).

4. The drone cleaning device for photovoltaic modules according to claim 3, characterized in that, The UAV body (1) is provided with a motor mount (7) on the lower side, and a spray bar drive motor (8) is installed in the motor mount (7). The main spray bar (4) is connected to the spray bar drive motor (8) in a transmission connection.

5. The drone cleaning device for photovoltaic modules according to claim 4, characterized in that, The main spray bar (4) is connected to the spray bar drive motor (8) through a transmission gear pair (9).

6. The drone cleaning device for photovoltaic modules according to claim 3, characterized in that, The secondary spray bar (6) is provided with a distance sensor at the end opposite to the main spray bar (4), and the distance sensor is used to detect the distance between it and the surface of the photovoltaic panel (02).

7. The drone cleaning device for photovoltaic modules according to claim 6, characterized in that, The distance between the fan-shaped nozzle (3) and the photovoltaic panel (02) is maintained between 300 and 500 mm.

8. The drone cleaning device for photovoltaic modules according to claim 3, characterized in that, The spray range of the fan-shaped nozzle (3) includes a first limit boundary (10) and a second limit boundary (11), and each adjacent first limit boundary (10) and second limit boundary (11) overlap.

9. The drone cleaning device for photovoltaic modules according to claim 1, characterized in that, The rotation angle of the spray bar assembly is 90°.

10. The drone cleaning device for photovoltaic modules according to claim 2, characterized in that, A pressurizing device is provided between the auxiliary spray bar (6) and the fan-shaped nozzle (3).

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