A desert photovoltaic fence

Abstract

This invention discloses a desert photovoltaic fence, belonging to the field of photovoltaic power station protection technology. It solves the problems of existing desert photovoltaic fences being easily buried by sandstorms, high sand removal and maintenance costs, and lacking an autonomous power source adapted to the desert environment. The fence includes posts and a fence mesh arranged along the boundary of the photovoltaic area, and is also equipped with a wind turbine, an adjustable inclined plane vibration device, a guide plate, and an air pump assembly. The wind turbine converts desert wind energy into mechanical and electrical energy to power the device. The adjustable inclined plane vibration device uses a herringbone hinged inclined plate, working with a vibrator to achieve sand removal through vibration. Angle adaptive adjustment is achieved through a double-headed telescopic rod linked with a wind speed sensor. The guide plate directs sand particles to the outside of the fence, and the air pump assembly disperses accumulated sand using high-pressure airflow. This invention uses wind energy as the sole power source, eliminating the need for external power supply and manual maintenance, fundamentally solving the problem of fence burial by sandstorms, and significantly reducing the operation and maintenance costs of desert photovoltaic fences.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic power station protection technology, specifically relating to a desert photovoltaic fence, which is particularly suitable for the protection and isolation of the boundaries of photovoltaic power stations in desert areas. Background Technology

[0002] With the large-scale construction of desert photovoltaic power stations, boundary protection has become a crucial aspect of ensuring the safe and stable operation of these stations. Photovoltaic power stations typically have fences erected at their boundaries to prevent wild animals and unauthorized personnel from entering, thus avoiding damage to the photovoltaic equipment from humans or animals. This is an indispensable infrastructure feature of desert photovoltaic power stations.

[0003] Currently, desert photovoltaic power stations generally use fixed metal fences, mainly composed of posts and fence mesh. The posts are fixed to the desert ground, and the fence mesh is connected to the posts to form a continuous protective system. However, desert areas have frequent wind and sand activity. After the sand flow is blocked at the fence, sand particles will continue to accumulate around the fence. During long-term operation, sand particles can easily bury the fence mesh, eventually causing the fence to completely lose its protective function.

[0004] To address the aforementioned issues, existing technologies primarily rely on periodic manual cleaning to remove accumulated sand around the fences. However, desert photovoltaic power stations cover vast areas, with fence boundaries stretching for kilometers or even tens of kilometers. Manual cleaning is extremely costly and inefficient, and the harsh desert environment makes manual maintenance difficult, hindering real-time sand removal and failing to fundamentally solve the problem of fences being buried by sandstorms. Furthermore, the remote location of desert areas and the lack of a stable external power grid around the fences prevent the continuous power supply to electric sand-removing equipment, further limiting the application of automated sand-removal solutions. In addition, existing fence meshes often employ a uniform aperture design, allowing sand particles to easily adhere and accumulate at the bottom of the mesh during windy weather. The mesh's strong obstruction of wind and sand flow further exacerbates sand deposition at the fence's base, accelerating its burial and failure.

[0005] Therefore, developing a desert photovoltaic fence that can utilize local desert wind energy to achieve self-driving, real-time sand removal, good anti-burial effect, and requires no external power supply or manual maintenance has become an urgent technical problem to be solved in the industry. Summary of the Invention

[0006] The purpose of this invention is to overcome the above-mentioned defects in the existing technology and provide a desert photovoltaic fence that uses the abundant wind energy in the desert as the sole power source. Through a multi-layered anti-burial design of vibration guidance and airflow sand blowing, it can remove the sand particles accumulated around the fence in real time, fundamentally solving the problem of the fence being buried by wind and sand. At the same time, it is adaptable to different wind speed environments in the desert, has high sand removal efficiency, does not require external power supply or manual maintenance, and greatly reduces the construction and operation and maintenance costs of desert photovoltaic fences.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A desert photovoltaic fence includes multiple posts evenly spaced along the boundary of a photovoltaic power station, with a fence mesh fixedly installed between adjacent posts. It also includes a wind turbine, an adjustable inclined vibrating device, a guide plate, and an air pump assembly. The wind turbine is fixedly installed beside the posts to convert wind energy into mechanical and electrical energy. The adjustable inclined vibrating device is located at the bottom of the fence mesh and includes two identical inclined plates hinged together in a herringbone shape, several vibrators, and a double-headed telescopic rod. The vibrators are fixedly installed on the back of the inclined plates, and the double-headed telescopic rod is composed of two telescopic rods with their ends hinged to the back of the two inclined plates. Both the vibrators and the double-headed telescopic rods are electrically connected to the generator and battery of the wind turbine. The guide plate is located at the end of the inclined plates to guide falling sand particles to the outer area of ​​the fence mesh. The air pump assembly is located below the herringbone inclined plates and includes an air pump and air pipes. The air pump is electrically connected to the generator and battery of the wind turbine.

[0008] In a preferred embodiment, the wind turbine blades are designed with variable pitch, increasing the windward surface when the ambient wind speed is 2-5 m / s and decreasing the windward surface when the ambient wind speed is ≥6 m / s. The output shaft of the wind turbine is equipped with a reduction gear set, a generator, and a battery. The output end of the reduction gear set is connected to the generator, and the generator is electrically connected to each electrical device and the battery.

[0009] In a preferred embodiment, the vibrators are evenly distributed on the back of the inclined plate along its length to ensure sand removal efficiency.

[0010] In a preferred embodiment, both the inclined plate and the guide plate are coated with a superhydrophobic coating to reduce the sliding resistance of sand particles and accelerate the sliding of sand particles.

[0011] In a preferred embodiment, the inclined plate has several air guide holes evenly distributed at its end. The air guide holes are connected to the air outlet of the air pipe. The air pump can drive high-pressure airflow to periodically spray through the air pipe and the air guide holes to disperse the sand particles accumulated at the end of the inclined plate.

[0012] In a preferred embodiment, the wind turbine is equipped with a wind speed sensor, and the double-headed telescopic rod is linked to the wind speed sensor signal. When the ambient wind speed is low, the double-headed telescopic rod retracts to increase the angle of the herringbone structure formed by the two inclined plates; when the ambient wind speed is high, the double-headed telescopic rod extends to decrease the angle of the herringbone structure.

[0013] In a preferred embodiment, the fence mesh adopts a variable aperture design with a smaller aperture at the top and a larger aperture at the bottom. The aperture of the upper part of the fence mesh is 3-5cm, and the aperture of the lower part is 6-8cm.

[0014] In a preferred embodiment, the trachea has a corrugated structure, which can adaptively extend and retract to adjust its length as the angle of the inclined plate changes.

[0015] In a preferred embodiment, the horizontal extension length of the guide plate is 5-8m, which is used to guide sand particles 5-8m outside the fence to avoid the formation of secondary sand dunes around the fence.

[0016] In a preferred embodiment, the trachea includes a main pipe and several branch pipes. The air inlet end of each branch pipe is fixedly connected to the side wall of the main pipe to form a parallel pipeline structure. The air outlet end of each branch pipe is connected to the air guide hole on the inclined plate one by one.

[0017] The beneficial effects of this invention are as follows: (1) This invention uses the abundant wind energy in desert areas as the only power source. The wind energy is converted into mechanical energy and electrical energy through wind turbines and fans, providing all the power for vibration sand clearing, angle adjustment and airflow sand blowing. It does not require external power grid supply or manual power supply, which is perfectly suited to the remote deployment scenario of desert photovoltaic areas without power supply, and greatly reduces the wiring cost and long-term operation and maintenance cost of fence construction. (2) A triple anti-burial system of "vibration desanding - sand diversion and airflow cleaning" was constructed: the vibrator of the adjustable inclined plate vibration device drives the inclined plate and the fence mesh to generate high-frequency vibration, so that the sand particles attached to the mesh and accumulated on the inclined plate are quickly detached; the guide plate guides the detached sand particles to the far outside of the fence to avoid the sand particles flowing back; the high-pressure airflow of the air pump component periodically sprays and blows away the floating sand accumulated at the end of the inclined plate and the root of the fence, which fundamentally solves the problem of the fence being buried by wind and sand and ensures that the fence plays a long-term stable protective role. (3) The inclined plate adopts a herringbone hinge structure. It is linked with the wind speed sensor through a double-headed telescopic rod. The angle of the herringbone structure can be adjusted adaptively according to the wind speed in the desert environment: the angle is increased when the wind speed is low to increase the sand guiding slope of the inclined plate and accelerate the sand drop; the angle is reduced when the wind speed is high to reduce the blocking effect on the wind and sand flow and reduce the deposition of sand around the fence. It perfectly adapts to the climate characteristics of large wind speed fluctuation in the desert and achieves the anti-burial effect in all wind speed scenarios. (4) The fence adopts a variable aperture design with a smaller aperture at the top and a larger aperture at the bottom. The small aperture of 3-5cm at the top ensures the protection and isolation of personnel and large animals, and can effectively block fine sand from adhering to the top of the fence. The large aperture of 6-8cm at the bottom can greatly reduce the impact of sand particles on the fence in windy weather, weaken the blocking effect of wind and sand flow, and reduce the accumulation of sand particles at the base of the fence from the source. (5) The wind turbine adopts a variable pitch design. In a light wind environment of 2-5m / s, the windward surface can be increased to start generating electricity. In a strong wind environment of ≥6m / s, the windward surface can be reduced to protect the equipment. It takes into account both the start-up performance in light wind and the stability of operation in strong wind. It is suitable for the climate characteristics of large wind speed fluctuations in desert areas and can achieve a continuous and stable power supply. At the same time, it is equipped with a battery to store electrical energy, which can ensure the normal operation of the equipment during windless periods and achieve all-weather protection against burial. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the adjustable inclined plane vibration device in this invention.

[0020] In the diagram: 1. Post; 2. Fence mesh; 3. Wind turbine; 4. Adjustable inclined plane vibration device; 401. Inclined plate; 402. Vibrator; 403. Double-headed telescopic rod; 404. Air vent; 5. Guide plate; 6. Air pump assembly; 601. Air pump; 602. Air pipe. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] As shown in Figures 1-2, the desert photovoltaic fence provided in this embodiment is a core facility for the boundary protection of desert photovoltaic power stations. It can utilize desert wind energy to achieve self-driven sand clearing, completely solving the problem of the fence being buried by wind and sand. The fence includes multiple posts 1 arranged at equal intervals along the boundary of the photovoltaic power station. A fence mesh 2 is fixedly installed between adjacent posts 1. It is also equipped with a wind turbine 3, an adjustable inclined vibration device 4, a guide plate 5, and an air pump assembly 6.

[0023] The column 1 is made of Q235 hot-dip galvanized steel pipe, and one is laid every 3 meters along the boundary of the photovoltaic power station. The bottom is fixed in the desert sand layer by spiral anchors to provide stable support for the whole fence. The fence mesh 2 is woven from galvanized steel wire and is fixedly installed between adjacent columns 1 to form a continuous protective boundary.

[0024] In this embodiment, the fence net body 2 adopts a variable aperture design with a smaller upper aperture and a larger lower aperture. The mesh aperture of the upper part of the fence net body 2 is 4cm, which not only ensures the protective isolation effect for personnel and large animals, but also prevents fine sand from adhering. The mesh aperture of the lower part of the fence net body 2 is 7cm, which can reduce the impact of sand particles on the net body in windy weather, reduce the blocking effect of wind and sand flow, and reduce sand accumulation.

[0025] Wind turbine 3 is fixedly installed beside each column 1 to convert desert wind energy into mechanical and electrical energy. The wind turbine blades of wind turbine 3 feature a variable pitch design, increasing the windward surface area when the ambient wind speed is 2-5 m / s for light wind start-up; and decreasing the windward surface area when the ambient wind speed is ≥6 m / s to prevent damage from strong winds, adapting to the fluctuating wind speeds characteristic of desert regions. The output shaft of wind turbine 3 is equipped with a reduction gear set, a generator, and a battery. The output end of the reduction gear set is connected to the generator, which is electrically connected to various electrical devices such as the vibrator 402, the double-headed telescopic rod 403, and the air pump 601, as well as the battery, allowing excess electrical energy to be stored in the battery to ensure normal operation of the equipment during windless periods. A wind speed sensor is also fixedly installed on the casing of wind turbine 3 for real-time acquisition of ambient wind speed data.

[0026] The adjustable inclined vibration device 4 is installed at the bottom of the fence net body 2 and is continuously laid out along the length of the fence, with both ends fixedly connected to the posts 1. The adjustable inclined plane vibration device 4 includes two identical inclined plates 401 with adjacent sides hinged together in a herringbone structure, several vibrators 402, and a double-headed telescopic rod 403. The top adjacent sides of the two inclined plates 401 are hinged together to form a herringbone structure with the opening facing downwards. The top of the inclined plate 401 is in contact with the bottom of the fence net body 2, which can transmit vibration to the fence net body 2. The vibrators 402 are high-frequency micro vibration motors, which are evenly distributed on the back of the inclined plate 401 along the length of the inclined plate 401. They can drive the inclined plate 401 to generate high-frequency sand-clearing vibration of 8-12Hz to ensure sand-clearing efficiency. The double-headed telescopic rod 403 is composed of two electric telescopic rods combined in opposite directions. The telescopic heads at both ends are hinged to the back of the two inclined plates 401 respectively. The double-headed telescopic rod 403 is linked with the wind speed sensor signal and can be extended and adjusted according to the wind speed signal to change the included angle of the herringbone structure formed by the two inclined plates 401.

[0027] In this embodiment, the control logic of the double-headed telescopic rod 403 is as follows: the preset wind speed threshold is 5m / s. When the ambient wind speed is lower than 5m / s, the double-headed telescopic rod 403 retracts, causing the bottoms of the two inclined plates 401 to move closer to each other, increasing the angle of the herringbone structure to 60°, increasing the sand-guiding slope of the inclined plate 401, and accelerating the sand particles to slide down. When the ambient wind speed is higher than 5m / s, the double-headed telescopic rod 403 extends, causing the bottoms of the two inclined plates 401 to move further apart, reducing the angle of the herringbone structure to 45°, reducing the obstruction effect on the wind and sand flow, and reducing sand particle deposition.

[0028] Both ends of the inclined plate 401 are fixedly connected to guide plates 5, which extend horizontally outwards from the fence mesh 2 for a length of 6m. These guide plates direct sand particles sliding down the inclined plate 401 to a distance of 6m outside the fence, preventing the formation of secondary sand dunes around the fence and preventing sand particles from flowing back and burying the fence again. Both the inclined plate 401 and the guide plates 5 are coated with a nano-superhydrophobic coating, which significantly reduces the sliding resistance between the sand particles and the plate surface, accelerating the sliding of the sand particles.

[0029] The air pump assembly 6 is located on the ground below the inclined plate 401 of the herringbone structure. It includes an air pump 601 and an air pipe 602. The air pump 601 is a high-pressure micro air pump, and its power supply end is electrically connected to the generator and battery of the wind turbine 3. Several air guide holes 404 are evenly opened at the end of the inclined plate 401 along its length. The air pipe 602 is a corrugated pipe structure, which can adaptively extend and retract to adjust its length according to the angle of the inclined plate 401, so as to avoid the pipe bending or falling off.

[0030] In this embodiment, the air pipe 602 includes a main pipe and multiple branch pipes. The air inlet end of each branch pipe is fixedly connected to the side wall of the main pipe to form a parallel pipeline structure. The air inlet end of the main pipe is connected to the air outlet of the air pump 601, and the air outlet end of each branch pipe is connected to the air guide hole 404 on the inclined plate 401 in a corresponding manner. The air pump 601 can drive high-pressure airflow to periodically spray through the main pipe, branch pipes and air guide hole 404 in sequence to disperse the sand particles accumulated at the end of the inclined plate 401 and prevent the sand particles from getting stuck.

[0031] The working process and principle of this embodiment are as follows: The desert wind drives the wind turbine 3 to rotate, converting wind energy into rotational mechanical energy. Part of the mechanical energy is transmitted to the generator through the reduction gear set and converted into electrical energy, which directly powers the vibrator 402, the double-headed telescopic rod 403, and the air pump 601. Excess electrical energy is stored in the battery to provide power for the equipment to operate during windless periods.

[0032] When the vibrator 402 is powered on, it generates high-frequency vibration, which drives the inclined plate 401 to vibrate synchronously, causing the sand particles accumulated on the inclined plate 401 to fall off quickly, thus preventing the sand particles from accumulating on the inclined plate 401 and burying the fence.

[0033] The sand particles that are vibrated off the inclined plate 401 slide down the inclined surface of the inclined plate 401 to the guide plate 5. The guide plate 5 directs the sand particles to an area 5-8m outside the fence, preventing the sand particles from accumulating around the fence and forming secondary sand dunes, and preventing the sand particles from flowing back and burying the fence again.

[0034] The air pump 601 is started periodically, and the high-pressure airflow generated is delivered to each air guide hole 404 through the air pipe 602. The air is sprayed outward from the air guide hole 404, blowing away the loose sand accumulated at the end of the inclined plate 401 and the base of the fence. Together with the vibration guide structure, it forms a triple anti-burial system, which completely removes the sand around the fence.

[0035] The wind speed sensor collects environmental wind speed data in real time. When the wind speed is low, it controls the double-headed telescopic rod 403 to retract, increasing the angle of the herringbone structure of the inclined plate 401 and improving the efficiency of sand sliding. When the wind speed is high, it controls the double-headed telescopic rod 403 to extend, reducing the angle of the herringbone structure, reducing the obstruction effect of wind and sand flow, reducing sand accumulation, and achieving adaptive adjustment in all wind speed scenarios.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A desert photovoltaic fence, comprising multiple posts (1) evenly spaced along the boundary of a photovoltaic power station, with a fence mesh (2) fixedly installed between adjacent posts (1), characterized in that, It also includes a wind turbine (3), an adjustable inclined plane vibration device (4), a guide plate (5), and an air pump assembly (6); The wind turbine (3) is fixedly installed next to the column (1) to convert wind energy into mechanical energy and electrical energy; The adjustable inclined vibration device (4) is set at the bottom of the fence net body (2). The adjustable inclined vibration device (4) includes two identical inclined plates (401) with adjacent sides hinged together in a herringbone structure, several vibrators (402) and double-headed telescopic rods (403). The vibrators (402) are fixedly set on the back of the inclined plate (401). The double-headed telescopic rods (403) are composed of two telescopic rods. The telescopic heads at both ends are hinged to the back of the inclined plate (401). The vibrators (402) and the double-headed telescopic rods (403) are both electrically connected to the generator and battery of the wind turbine (3). The guide plate (5) is set at the end of the inclined plate (401) to guide the falling sand particles to the outer area of ​​the fence mesh; The air pump assembly (6) is located below the inclined plate (401) of the herringbone structure. The air pump assembly (6) includes an air pump (601) and an air pipe (602). The air pump (601) is electrically connected to the generator and battery of the wind turbine (3).

2. A desert photovoltaic fence according to claim 1, characterized in that, The wind turbine blades of the wind turbine (3) are designed with variable pitch, which increases the windward surface when the ambient wind speed is 2-5m / s and decreases the windward surface when the ambient wind speed is ≥6m / s. The output shaft of the wind turbine (3) is equipped with a reduction gear set, a generator and a battery. The output end of the reduction gear set is connected to the generator, and the generator is electrically connected to each electrical device and the battery.

3. A desert photovoltaic fence according to claim 1, characterized in that, The vibrator (402) is evenly distributed on the back of the inclined plate (401) along the length of the inclined plate (401) to ensure sand removal efficiency.

4. A desert photovoltaic fence according to claim 1, characterized in that, The surfaces of the inclined plate (401) and the guide plate (5) are both coated with a superhydrophobic coating to reduce the sliding resistance of sand particles and accelerate the sliding of sand particles.

5. A desert photovoltaic fence according to claim 1, characterized in that, The inclined plate (401) has a number of air guide holes (404) evenly opened at its end. The air guide holes (404) are connected to the air outlet of the air pipe (602). The air pump (601) can drive the high-pressure airflow to periodically spray through the air pipe (602) and the air guide holes (404) to blow away the sand particles accumulated at the end of the inclined plate (401).

6. A desert photovoltaic fence according to claim 1, characterized in that, The wind turbine (3) is equipped with a wind speed sensor. The double-headed telescopic rod (403) is linked with the wind speed sensor signal. When the ambient wind speed is low, the double-headed telescopic rod (403) retracts to increase the angle of the herringbone structure formed by the two inclined plates (401). When the ambient wind speed is high, the double-headed telescopic rod (403) extends to reduce the angle of the herringbone structure.

7. A desert photovoltaic fence according to claim 1, characterized in that, The fence mesh (2) adopts a variable aperture design with a smaller upper aperture and a larger lower aperture. The upper mesh aperture of the fence mesh (2) is 3-5cm and the lower mesh aperture is 6-8cm.

8. A desert photovoltaic fence according to claim 1, characterized in that, The trachea (602) has a corrugated structure and its length can be adaptively extended and retracted to adjust with the angle of the inclined plate (401).

9. A desert photovoltaic fence according to claim 1, characterized in that, The horizontal extension length of the guide plate (5) is 5-8m, which is used to guide the sand particles to a distance of 5-8m outside the fence to avoid the formation of secondary sand dunes around the fence.

10. A desert photovoltaic fence according to claim 5, characterized in that, The trachea (602) includes a main pipe and several branch pipes. The air inlet end of each branch pipe is fixedly connected to the side wall of the main pipe to form a parallel pipeline structure. The air outlet end of each branch pipe is connected to the air guide hole (404) on the inclined plate (401) one by one.

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