Photovoltaic module hot spot prevention device

Abstract

The utility model discloses a photovoltaic module hot spot prevention device, including unmanned aerial vehicle body, water tank, water tank is connected through the flexible arm, and the flexible arm front end is equipped with the nozzle, and the water tank bottom is equipped with the turntable, and the flexible arm is connected with the turntable, the photovoltaic module hot spot prevention device of the utility model, the length, angle of all can adjust, is suitable for the photovoltaic module cleaning of different angle, avoids the interference of unmanned aerial vehicle bottom support, blade to the injection distance.

Description

Technical Field

[0001] This utility model relates to a photovoltaic module operation and maintenance device, and more particularly to a photovoltaic module hot spot prevention device. Background Technology

[0002] In the operation and maintenance of photovoltaic power plants, the prevention of hot spots on photovoltaic modules is crucial for maintaining their normal operation. Hot spots are formed due to long-term shading from bird droppings, dust, and tree shade. Common prevention methods involve regular cleaning of the photovoltaic modules, which is labor-intensive, has long cleaning cycles, and cannot provide real-time protection. Existing patents have proposed using drones to prevent hot spots on photovoltaic modules, such as the drone for inspection and cleaning of photovoltaic modules disclosed in CN218858685U. This device has the function of inspecting and cleaning photovoltaic modules, but its spray gun length is not adjustable, which may interfere with the drone's own support frame and blades. Photovoltaic fields cover a vast area, often hundreds or thousands of acres. The drone's size and load-bearing capacity are limited, as are the water tank capacities it can carry. In practical applications, the water tank's endurance is a problem that needs to be addressed. Utility Model Content

[0003] Purpose of the utility model: The purpose of this utility model is to provide a photovoltaic module hot spot prevention device that can adjust the spray distance and angle.

[0004] Technical solution: The photovoltaic module hot spot prevention device of this utility model includes a drone body and a water tank. The water tank is connected to a telescopic arm through a hose. The front end of the telescopic arm is provided with a nozzle. The bottom of the water tank is provided with a turntable. The telescopic arm and the turntable are connected.

[0005] Preferably, the turntable includes an active turntable and a passive turntable, which are connected by an active telescopic arm, a passive telescopic arm, and a telescopic arm.

[0006] Preferably, the hose outlet is equipped with a booster pump.

[0007] Preferably, the active turntable, the driven turntable, and the UAV body are connected by a support.

[0008] Preferably, the photovoltaic module hot spot prevention device further includes a water filling device, and the water tank has a water inlet connected to the water filling device on the side away from the nozzle.

[0009] Preferably, the water filling device includes a stopping platform and a base, the stopping platform is connected to a water storage tank via a horizontal moving component, and the water storage tank is provided with a connector that connects to the water inlet.

[0010] Preferably, a water pipe is connected to the water storage tank, and the water pipe is connected to a ground water pump.

[0011] Preferably, the horizontal movement component is a ball screw.

[0012] Beneficial effects: Compared with the prior art, this utility model has the following advantages: 1. The nozzle length and angle are adjustable, avoiding interference from the bottom bracket and blades of the drone on the spray distance, and is suitable for cleaning photovoltaic modules at different angles; 2. Ensure water tank endurance: simplify the water filling device, and the water filling device can be reasonably arranged in the photovoltaic field. When the water tank is short of water, it can be automatically filled nearby; 3. It has sufficient cleaning power. Attached Figure Description

[0013] Figure 1 A side view of the UAV structure of the photovoltaic module hot spot prevention device;

[0014] Figure 2 for Figure 1 Schematic diagram of the middle section;

[0015] Figure 3 A front view of the UAV structure of a photovoltaic module hot spot prevention device;

[0016] Figure 4 This is a side view of the structure of a photovoltaic module hot spot prevention device;

[0017] Figure 5 This is a side view of the water supply device structure of a photovoltaic module hot spot prevention device;

[0018] Figure 6 Top view of the water supply device structure of the photovoltaic module hot spot prevention device;

[0019] Figure 7 This is a top view of a photovoltaic module hot spot prevention device. Detailed Implementation

[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0021] like Figure 1 As shown, the photovoltaic module hot spot prevention device includes a drone body 1 and a support 2. The support 2 is located below the drone and supports the drone body 1. A water tank 18 is mounted on the support 2. The water tank 18 is connected to a telescopic arm 11 via a hose 13. A nozzle 12 is provided at the front end of the telescopic arm 11. The telescopic arm 11 is used to adjust the spray distance. The nozzle 12 sprays water from the water tank 18 to clean stains on the photovoltaic module and prevent the formation of hot spots. A turntable is provided at the bottom of the water tank 18. The middle part of the telescopic arm 11 is connected to the turntable. The turntable is used to adjust the angle between the telescopic arm 11 and the water tank 18. Figure 2The turntable includes an active turntable 7 and a driven turntable 8, which are arranged parallel to each other and connected to the bracket 2. The active turntable 7 and the driven turntable 8 are connected by an active telescopic arm 9, a driven telescopic arm 10, and a telescopic arm 11, forming an active and driven structure to ensure that the telescopic arm 11 is firmly connected and rotates stably. A booster pump 14 is provided at the outlet of the hose 13. The booster pump 14 pressurizes the water in the water tank 18, and the pressurized water flows through the hose 13 to the telescopic arm 11, and finally sprays out through the nozzle 12.

[0022] like Figure 3 The drone body 1 or the support 2 is equipped with a vision device, which includes an infrared camera 15 and a visible light camera 16. The infrared camera 15 is used to detect whether there are hot spots on the photovoltaic modules. If hot spots are detected, the nozzle sprays the hot spots to clean the surface of bird droppings, dust, and other dirt that caused the hot spots. The visible light camera 16 is used to detect the angle of the photovoltaic panels, adjust the movement of the active telescopic arm 9 and the active turntable 7, and also to perform retesting. For hot spots that cannot be cleaned by the nozzle 12 or that persist for a long time, the planar camera 16 records the information, which helps maintenance personnel analyze whether it is due to tree shadows or hot spot damage to the modules. The infrared camera 15 and the planar camera 16 are connected to the support 2 via a base 17. The base 17 can rotate to ensure that the field of view of the cameras is adjustable.

[0023] like Figure 4 The photovoltaic module hot spot prevention device also includes a water supply device 6. A water inlet 19 (normally closed in operation) is located on the side of the water tank 18 furthest from the nozzle 12, to facilitate connection with the water supply device 6. For example... Figures 5 to 7 The water filling device 6 includes a landing platform 20 and a base 27. The landing platform 20 is located above the base 27. A water storage tank 22 is provided on the landing platform 20. The water storage tank 22 has a connector 21 that can connect with the water inlet. When the water in the water tank 18 is exhausted, the UAV body 1 is placed on the platform 20 and connects with the connector 21 to replenish the water in the water tank 18. When the pressure in the water tank 18 reaches the rated value (full), water filling stops. A landing point 26 is provided in the middle of the landing platform 20 for reference and alignment when the UAV body 1 lands.

[0024] To avoid interference between the automatic water filling process and the ascent and descent of the drone body 1, a horizontal moving component 23 is provided on the platform 20. The water tank 22 is connected to the platform 2 via the horizontal moving component 23. Before and after the drone body 1 is parked, the distance between the water tank 22 and the drone body 1 is adjusted: in standby mode (before the drone lands), the water tank 22 moves to the end of the guide rail of the horizontal moving component 23; after the drone lands, the water tank 22 moves to the connector 21 and aligns with the water inlet of the water tank 18. The horizontal moving component 23 is an existing structure and can be either a ball screw assembly or a cylinder assembly, with a ball screw assembly being preferred. The bottom of the water tank 22 is rotatably connected to the screw. A water pipe 24 is connected to the water tank 22, and the water pipe 24 is connected to a ground water pump 25, which is connected to a ground water pipe (not shown).

Claims

1. A photovoltaic module hot spot prevention device, comprising a drone body (1) and a water tank (18), characterized in that, It also includes a water filling device. The water tank (18) is connected to the telescopic arm (11) via a hose (13). The telescopic arm (11) has a nozzle (12) at its front end and a turntable at the bottom of the water tank (18). The telescopic arm (11) is connected to the turntable. The side of the water tank (18) away from the nozzle (12) has a water inlet (19) that is connected to the water filling device. The water filling device includes a stop platform (20) and a base (27) set at the top and bottom. The stop platform (20) is connected to the water storage tank (22) via a horizontal moving component (23). The water storage tank (22) has a connector (21) that is connected to the water inlet (19).

2. The photovoltaic module hot spot prevention device according to claim 1, characterized in that, The turntable includes an active turntable (7) and a driven turntable (8), which are connected by an active telescopic arm (9), a driven telescopic arm (10), and a telescopic arm (11).

3. The photovoltaic module hot spot prevention device according to claim 1, characterized in that, The outlet of the hose (13) is equipped with a booster pump (14).

4. The photovoltaic module hot spot prevention device according to claim 2, characterized in that, The active turntable (7), the driven turntable (8), and the support (2) of the UAV body (1) are connected.

5. The photovoltaic module hot spot prevention device according to claim 1, characterized in that, The water storage tank (22) is connected to a water pipe (24), which is connected to a ground water pump (25).

6. The photovoltaic module hot spot prevention device according to claim 1, characterized in that, The horizontal movement component (23) is a ball screw.

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