An airport photovoltaic automatic weeding device

Abstract

This utility model relates to the field of photovoltaic module technology, and more particularly to an automatic weeding device for airport photovoltaic systems. The technical solution includes a photovoltaic module body, and further includes: a support cover movably mounted on the back of the photovoltaic module body; the support cover contains a water storage bag tightly attached to the back of the photovoltaic module body; the water storage bag stores water heated by absorbing heat generated by the photovoltaic module body; and a weeding mechanism, disposed on the photovoltaic module body and the support cover, for spraying the hot water from the water storage bag onto the weeds. This utility model utilizes the cooperation of the support cover, water storage bag, temperature sensor, water pump, and weeding mechanism to automatically spray water onto the bottom and surrounding area of ​​the photovoltaic module once the water temperature in the water storage bag reaches a high level, effectively eliminating surrounding weeds, making the airport environment cleaner and more orderly, and improving visual appeal. Simultaneously, it prevents weeds from obstructing the photovoltaic module, ensuring that the photovoltaic module maximizes its solar energy reception efficiency.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, and in particular to an automatic weeding device for airport photovoltaic systems. Background Technology

[0002] Currently, some airports install photovoltaic (PV) modules to power their equipment. However, the soil and environment surrounding these PV modules provide suitable growing conditions for plants, such as water, sunlight, and a warm climate, leading to weeds growing around and under the modules. Traditional airports often prioritize a clean and tidy appearance, and the growth of weeds around the PV modules negatively impacts the overall aesthetics, creating a poor first impression on visitors. Furthermore, the weeds can obstruct the solar panels, preventing them from receiving sufficient sunlight and reducing the efficiency of PV power generation. Utility Model Content

[0003] The purpose of this invention is to address the problems of weeds growing around and around the base of photovoltaic modules installed in traditional airports, which affect the overall aesthetics and reduce the efficiency of photovoltaic power generation by obstructing the photovoltaic modules. This invention proposes an automatic weeding device for airport photovoltaic systems.

[0004] The technical solution of this utility model is as follows: An automatic photovoltaic weeding device for airports includes a photovoltaic module body and a support cover movably installed on the back of the photovoltaic module body. The support cover has a water storage bag inside that is closely attached to the back of the photovoltaic module body. The water storage bag contains water heated by absorbing heat generated by the photovoltaic module body. A weeding mechanism is set on the photovoltaic module body and the support cover for spraying the hot water in the water storage bag onto the grass.

[0005] Optionally, the weeding mechanism includes an output pipe fixedly connected to a water storage bag, a water pump being provided on the water storage bag, the end of the output pipe away from the water storage bag being connected to the suction pipe of the water pump, a convex pipe being fixedly connected to the outlet pipe of the water pump, a pair of horizontal branch pipes being fixedly connected to the convex pipe, and a plurality of linearly arranged dispersion pipes being fixedly connected to the horizontal branch pipes, each of the dispersion pipes being provided with a plurality of adjusting nozzles for adjusting the spraying angle.

[0006] Optionally, the weeding mechanism further includes a solenoid valve mounted on the convex tube, the solenoid valve being connected in series with the water pump, a temperature sensor being fixedly connected to the outer wall of the water storage bag, a controller being fixedly connected to the solenoid valve, the temperature sensor being connected to the input terminal of the controller, and the solenoid valve being connected to the output terminal of the controller.

[0007] Optionally, the water storage bag is fixedly connected to a connection inlet, and the inside of the support cover is provided with a connection end tube that can be inserted into the connection inlet.

[0008] Optionally, the end of the connecting pipe away from the connecting inlet is movably connected to a water supply pipe after passing through the support cover.

[0009] Optionally, a pair of connecting plates are fixedly connected to the outer walls of both ends of the support cover. Each connecting plate has a connecting hole at the end away from the support cover, and each connecting hole has a fixing screw that is spirally connected to the photovoltaic module body.

[0010] Optionally, a fixed support rod is fixedly connected to the end of the dispersion tube away from the horizontal branch tube, and the end of the fixed support rod away from the dispersion tube is fixedly connected to the support cover.

[0011] Optionally, the support cover is made of black polypropylene.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] This invention utilizes a combination of a support cover, a water storage bag, a temperature sensor, a water pump, and a weeding mechanism. Once the water in the storage bag reaches a high temperature, it automatically sprays water onto the bottom and surrounding areas of the photovoltaic modules, effectively eliminating surrounding weeds and creating a cleaner, more orderly airport environment with improved visual appeal. Simultaneously, it prevents weeds from obstructing the photovoltaic modules, ensuring that the modules maximize their solar energy absorption efficiency. Attached Figure Description

[0014] Figure 1 A structural schematic diagram of an automatic photovoltaic weeding device for airports according to this utility model is provided;

[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0016] Figure 3 for Figure 1 A partial diagram of the split structure;

[0017] Figure 4 for Figure 3 Schematic diagram of the structure of the water storage bag;

[0018] Figure 5 for Figure 4 Enlarged diagram of point B in the middle.

[0019] Reference numerals in the attached drawings: 1. Photovoltaic module body; 2. Support cover; 21. Water supply pipe; 22. Connecting plate; 23. Connecting hole; 24. Connecting end pipe; 25. Fixing screw; 3. Water storage bag; 31. Connecting inlet; 32. Protruding pipe; 33. Water pump; 34. Solenoid valve; 35. Controller; 36. Horizontal branch pipe; 37. Temperature sensor; 38. Dispersion pipe; 39. Adjusting nozzle; 301. Output pipe; 4. Fixing support rod. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0021] like Figures 1 to 5 As shown, this utility model proposes an automatic photovoltaic weeding device for airports, including a photovoltaic module body 1 and a support cover 2 movably installed on the back of the photovoltaic module body 1. The support cover 2 is made of black polypropylene. Even without direct sunlight, the black polypropylene plastic bag absorbs heat relatively quickly. This is because black objects have a high absorption rate for light of various wavelengths, and polyethylene itself is a polymer material. Although its thermal conductivity is relatively low, the black polyethylene plastic bag absorbs energy such as heat radiation from the environment, and due to its color characteristics, it absorbs relatively more energy, causing its temperature to rise faster than other light-colored plastic bags. The water temperature in the water storage bag 3 usually needs to reach 60℃ to 70℃ to effectively kill weeds. Traditional photovoltaic module bodies 1 generate a certain amount of heat under sunlight, especially in high-temperature environments. The efficiency of the photovoltaic module body 1 is closely related to its surface temperature, which is usually 10℃ to 30℃ higher than the surrounding air temperature. In sunny weather, if the ambient temperature is between 35°C and 40°C, the temperature on the back of the photovoltaic module 1 will reach 60°C to 85°C, or even higher. This is because solar radiation directly heats the surface of the photovoltaic module 1, and the heat is not completely dissipated. At this time, the water in the water storage bag 3 will typically be heated by contact with the back of the photovoltaic module 1, reaching a temperature of around 60°C. This temperature is sufficient to heat the water to between 60°C and 70°C, making it suitable for weed control.

[0022] The support cover 2 is made of black polypropylene. Black polypropylene (PP) water storage bags are typically water storage containers made of polypropylene and are suitable for various liquid storage applications. Polypropylene is a high-strength, heat-resistant, and chemically stable material, therefore it is commonly used in liquid storage applications requiring resistance to certain temperatures and pressures. A pair of connecting plates 22 are fixedly connected to the outer walls of both ends of the support cover 2. The connecting plates 22 securely mount the support cover 2 onto the photovoltaic module body 1. Since the edges of the photovoltaic module body 1 are typically encased in metal, the connecting holes 23 on the connecting plates 22 coincide with the metal edges of the photovoltaic module body 1. Connecting holes 23 are provided at the ends of the connecting plates 22 furthest from the support cover 2. Each connecting hole 23 contains a fixing screw 25 that spirally connects to the photovoltaic module body 1. The fixing screws 25 allow for quick assembly and disassembly of the connecting plates 22 onto the photovoltaic module body 1, ultimately enabling the support cover 2 to be quickly assembled and disassembled from the photovoltaic module body 1. Inside the support cover 2 is a water storage bag 3 that fits tightly against the back of the photovoltaic module body 1. When there is no water inside the water storage bag 3, there is no substance inside the bag that exerts outward pressure on the bag wall, and the bag wall is in a contracted state due to the elasticity of its own material, so it appears deflated. When water is injected into the water storage bag 3, the water occupies a certain space inside the bag, and because the water has a certain volume and weight, it will exert uniform outward pressure on the inner wall of the water storage bag 3. This pressure causes the bag wall to overcome its own elastic force and expand outward. As the amount of water injected increases, the bag wall is continuously stretched, and the water storage bag 3 gradually expands to hold more water until it reaches its maximum capacity. The water storage bag 3 stores water that has been heated after absorbing the heat generated by the photovoltaic module body 1. A connection inlet 31 is fixedly connected to the water storage bag 3, and the connection inlet 31 is connected to the connection end pipe 24 by a snap-fit ​​connection. The support cover 2 has a connecting pipe 24 inside, which is inserted into the connecting inlet 31. One end of the connecting pipe 24, away from the connecting inlet 31, passes through the support cover 2 and is fixedly connected to a water supply pipe 21. The water supply pipe 21 is typically connected to a water pump, a key component of the water supply system, which provides power to overcome gravity and pipe resistance for long-distance water transport. One end of the water supply pipe is connected to the outlet of the water pump, delivering the pressurized water to the required location. Alternatively, the water supply pipe 21 may be connected to a water tank or pool, which stores water to meet water demand at different times. The water supply pipe can transport water from the water source to the water tank or pool for storage, and can also deliver water from the tank or pool to various water usage points when needed.

[0023] Furthermore, such as Figures 1 to 5As shown, a weeding mechanism is located on the photovoltaic module body 1 and the support cover 2. This mechanism sprays hot water from the water storage bag 3 onto the grass. The weeding mechanism includes an output pipe 301 fixedly connected to the water storage bag 3. A water pump 33 is installed on the water storage bag 3. The water pump 33 operates on the principle that its internal motor drives the impeller to rotate at high speed. Water in the impeller is thrown towards the edge of the impeller under centrifugal force, thereby obtaining higher speed and pressure, and then discharged from the outlet of the pump casing. At the same time, a low-pressure zone is formed at the center of the impeller, allowing water to be continuously drawn into the impeller, achieving continuous water supply. The end of the output pipe 301 away from the water storage bag 3 is connected to the suction pipe of the water pump 33. A convex pipe 32 is fixedly connected to the outlet pipe of the water pump 33. A pair of horizontal branch pipes 36 are fixedly connected to the convex pipe 32. Several linearly arranged dispersion pipes 38 are fixedly connected to the horizontal branch pipes 36. The dispersion pipes 38 are used to disperse the water in the horizontal branch pipes 36. Each dispersion tube 38 is equipped with multiple adjusting nozzles 39 for adjusting the spray angle. Each adjusting nozzle 39 typically consists of a nozzle body, a rotating mechanism, and a drive unit. The nozzle body has one or more spray holes, the rotating mechanism allows the nozzle body to rotate around one or more axes, and the drive unit provides power to achieve the rotation. The power source can be water pressure, a motor, or other mechanical devices.

[0024] In addition, in this embodiment, a fixed support rod 4 is fixedly connected to the end of the dispersion tube 38 away from the horizontal branch tube 36. The fixed support rod 4 is used to support one end of the dispersion tube 38 to ensure that the dispersion tube 38 will not tilt due to any external force. The end of the fixed support rod 4 away from the dispersion tube 38 is fixedly connected to the support cover 2. The weeding mechanism also includes a solenoid valve 34 disposed on the convex tube 32. The solenoid valve 34 is an automated basic component that uses electromagnetic force to control the flow of fluid (liquid or gas). The operation of the solenoid valve 34 is based on the principle of electromagnetic induction. It mainly consists of an electromagnetic coil, a valve core, and a valve body. When the electromagnetic coil is energized, it generates a magnetic field. The magnetic field force attracts the valve core to move, thereby changing the relative position between the valve core and the valve body, realizing the opening or closing of the valve, thereby controlling the flow or flow rate of the fluid. When the coil is de-energized, the magnetic field disappears, and the valve core returns to its initial position under the action of spring force or other external force, and the valve state changes accordingly. Solenoid valve 34 is connected in series with water pump 33. A temperature sensor 37 is fixedly connected to the outer wall of water storage bag 3. Temperature sensor 37 is a device that senses temperature and converts it into a usable output signal; it is a contact temperature sensor. Contact temperature sensors require direct contact with the object being measured, such as resistance temperature detectors (RTDs), thermocouples, and thermistors, to measure temperature through thermal conduction to achieve thermal equilibrium. A controller 35 is fixedly connected to solenoid valve 34. Controller 35 opens the solenoid valve by outputting an electrical signal. This is because controller 35 has corresponding control circuitry and programs internally. When the temperature value detected by temperature sensor 37 reaches the controller's preset opening condition, controller 35 sends an electrical signal, typically a specific voltage or current signal. This signal is transmitted to the solenoid coil of the solenoid valve, causing the coil to generate a magnetic field. Under the action of the magnetic field, the valve core of the solenoid valve overcomes resistance such as spring force and moves, thereby opening the valve and allowing fluid to flow through it, thus achieving the regulation and control of temperature and other related parameters. Temperature sensor 37 is connected to the input terminal of controller 35, and solenoid valve 34 is connected to the output terminal of controller 35.

[0025] In this embodiment, when airport photovoltaic modules with automatic weeding function are required, such as... Figure 1As shown, the water supply equipment is first connected to the end of the water supply pipe 21, so that water is sequentially fed into the water storage bag 3 from the water supply pipe 21, the connecting end pipe 24, and the connecting inlet 31. Once the water storage bag 3 is full, it expands and one side adheres tightly to the back of the photovoltaic module body 1. When the photovoltaic module body 1 is exposed to sunlight, the back of the photovoltaic module body 1 will also generate high temperatures, which will heat the water inside the water storage bag 3. Once the water in the water storage bag 3 reaches the specified temperature, the temperature sensor 37 on the outer wall of the water storage bag 3 will detect this and send a signal to the controller 35. The controller 35 receives the signal and sends a command to the solenoid valve 34. Since the solenoid valve 34 is connected in series with the water pump 33, the water pump 33 will also start and sequentially transport the water in the water storage bag 3 to the convex pipe 32 and the horizontal branch pipe 36. The water in the horizontal branch pipe 36 is then transported to multiple distribution pipes 38, whereby the heated hot water is sprayed from multiple regulating nozzles 39 onto the bottom of the photovoltaic module body 1 and the surrounding grass. This spray damages the cell walls of the grass, causing the leaves to soften and wither. This process is repeated until the roots of the grass are damaged and the grass dies.

[0026] The specific embodiments of the utility model have been described in detail above, but they are only examples, and the utility model is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications or substitutions to the utility model are also within the scope of the utility model. Therefore, all equivalent transformations, modifications, and improvements made without departing from the spirit and principles of the utility model should be covered within the scope of the utility model.

Claims

1. An automatic photovoltaic weeding device for airports, comprising a photovoltaic module body, characterized in that, Also includes: A support cover is installed on the back of the photovoltaic module body. Inside the support cover is a water storage bag that is in close contact with the back of the photovoltaic module body. The water storage bag contains water that is heated after absorbing the heat generated by the photovoltaic module body. A weeding mechanism, installed on the photovoltaic module body and support cover, is used to spray hot water from the water storage bag onto the grass. The weeding mechanism includes an output pipe fixedly connected to a water storage bag. A water pump is installed on the water storage bag. The end of the output pipe away from the water storage bag is connected to the suction pipe of the water pump. A convex pipe is fixedly connected to the outlet pipe of the water pump. A pair of horizontal branch pipes are fixedly connected to the convex pipe. Multiple dispersing pipes arranged in a linear pattern are fixedly connected to the horizontal branch pipes. Each dispersing pipe is equipped with multiple adjusting nozzles for adjusting the spraying angle.

2. The airport photovoltaic automatic weeding device according to claim 1, characterized in that, The weeding mechanism also includes a solenoid valve mounted on the convex tube. The solenoid valve is connected in series with the water pump. A temperature sensor is fixedly connected to the outer wall of the water storage bag. A controller is fixedly connected to the solenoid valve. The temperature sensor is connected to the input terminal of the controller, and the solenoid valve is connected to the output terminal of the controller.

3. The airport photovoltaic automatic weeding device according to claim 1, characterized in that, The water storage bag is fixedly connected to a connection inlet, and the inside of the support cover is provided with a connection end tube that can be inserted into the connection inlet.

4. The airport photovoltaic automatic weeding device according to claim 3, characterized in that, The end of the connecting pipe away from the connecting inlet is movably connected to the support cover and then fixedly connected to a water supply pipe.

5. The airport photovoltaic automatic weeding device according to claim 1, characterized in that, A pair of connecting plates are fixedly connected to the outer walls of both ends of the support cover. Each connecting plate has a connecting hole at the end away from the support cover, and each connecting hole has a fixing screw that is spirally connected to the photovoltaic module body.

6. The airport photovoltaic automatic weeding device according to claim 1, characterized in that, Each end of the dispersion tube away from the horizontal branch tube is fixedly connected to a fixed support rod, and the end of the fixed support rod away from the dispersion tube is fixedly connected to the support cover.

7. The airport photovoltaic automatic weeding device according to claim 1, characterized in that, The support cover is made of black polypropylene.

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