Automatic cooling and dust removing lightning arrester

Abstract

The application relates to the technical field of lightning arresters, in particular to an automatic cooling and dust removing lightning arrester which comprises a mounting rod, the upper end of the mounting rod is fixedly connected with a mounting disc, a lightning arrester body is arranged on the mounting disc, the lower end of the mounting rod is provided with a rotating structure, the rotating structure comprises an upper support frame and a lower support frame which are respectively rotationally connected with the upper and lower ends of the mounting rod, a plurality of wind resistance plates which can self-rotate along the wind direction are arranged between the upper support frame and the lower support frame, the upper end of the upper support frame is fixedly connected with an insulating support, an external dust removing structure is arranged on the insulating support, the external dust removing structure comprises a plurality of parallel slit assemblies which correspond to the lightning arrester body, an internal heat radiating and dust removing structure is arranged in the lightning arrester body, the internal heat radiating and dust removing structure comprises a plurality of vertical slit assemblies, and the problems that the lightning arrester body is damaged due to the sharp temperature rise in the lightning arrester body and the service life of the lightning arrester body is shortened due to the dust gathered inside and outside the lightning arrester body are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of surge arrester technology, and in particular to an automatic cooling and dust removal surge arrester. Background Technology

[0002] The nonlinear resistive varistor of a metal oxide surge arrester is mainly composed of zinc oxide, which possesses extremely superior nonlinear characteristics. Under normal operating voltage, the varistor deteriorates due to long-term exposure to power frequency voltage, causing changes in its resistive characteristics and leading to an increase in leakage current flowing through it. The sharp increase in the resistive component of the current can cause the temperature on the varistor to rise, resulting in thermal collapse. In severe cases, this can even lead to an explosion of the surge arrester itself.

[0003] In addition, existing metal oxide surge arresters are directly installed in a preset position during use. Traditional metal oxide surge arresters have poor cooling effect during use. Under high-intensity use, the internal temperature of the surge arrester rises sharply, which can easily cause damage to the surge arrester.

[0004] Moreover, after prolonged use, traditional metal oxide surge arresters accumulate dust inside and outside the arrester, affecting its normal operation and greatly reducing its service life, thus failing to meet the needs of real-world applications. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the present invention provides an automatic cooling and dust removal surge arrester that effectively solves the problems of damage to the surge arrester body caused by a rapid increase in the internal temperature of the surge arrester body and the reduction in the service life of the surge arrester body due to the accumulation of dust inside and outside the surge arrester body.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An automatic cooling and dust removal surge arrester includes a mounting rod, an mounting plate fixedly connected to the upper end of the mounting rod, a surge arrester body mounted on the mounting plate, a rotating structure at the lower end of the mounting rod, the rotating structure including an upper support frame and a lower support frame rotatably connected to the upper and lower ends of the mounting rod respectively, a plurality of wind baffles that can rotate with the wind direction are arranged between the upper and lower support frames, an insulating bracket fixedly connected to the upper end of the upper support frame, an external dust removal structure mounted on the insulating bracket, the external dust removal structure including a plurality of parallel slit assemblies corresponding to the surge arrester body, and an internal heat dissipation and dust removal structure within the surge arrester body, the internal heat dissipation and dust removal structure including a plurality of vertical slit assemblies.

[0007] Furthermore, the wind baffle is rotatably connected to the upper support frame and the lower support frame respectively, and the upper and lower end cut surfaces of the wind baffle are flush with the upper support frame and the lower support frame respectively. The inner walls of the upper support frame and the lower support frame are provided with bearings that are rotatably connected to the mounting rod.

[0008] Furthermore, the external dust removal structure also includes a first pillar and a second pillar that are fixedly connected to both ends of the insulating support, and a plurality of parallel slit assemblies are evenly arranged on the first pillar and the second pillar. The coarse end of the parallel slit assembly is located on the outside, and the fine end is opposite to the outside of the surge arrester body.

[0009] Furthermore, the internal heat dissipation and dust removal structure includes a hollow dustproof end cover connected to the upper end of the surge arrester body. The hollow dustproof end cover has a hollow end cover channel. The surge arrester body has a hollow insulating tube connected to the vertical slit assembly. The hollow insulating tube is covered with a waterproof membrane. The hollow insulating tube and the hollow end cover channel are connected. The lower ends of the surge arrester body have crimp terminals connected to the mounting plate on both sides. The lower ends of the crimp terminals have end ventilation holes connected to the hollow insulating tube.

[0010] Furthermore, the upper and lower ends of the upper and lower support frames are respectively provided with limiting rings that are fixedly connected to the mounting rod, and the lower end of the mounting rod is fixedly connected with an insulating mounting seat.

[0011] Furthermore, the upper ends of the first and second pillars are respectively provided with bird-repelling structures that cooperate with the rotating structure. The bird-repelling structure includes a pivot seat fixedly connected to the upper end of the first pillar. A support rod is rotatably connected to the inner wall of the pivot seat. The two ends of the support rod are respectively embedded with a first plate and a second plate. The surfaces of the first plate and the second plate are coated with a layer of reflective metal material.

[0012] Compared with the prior art, the automatic cooling and dust removal surge arrester of the present invention has the following advantages: 1. By setting an external dust removal structure, the parallel slit components on the first and second pillars can increase the airflow speed on the umbrella surface of the surge arrester body, making it difficult for dust to settle on the umbrella blades. When strong winds pass by, the silicone rubber umbrella blades of the surge arrester body will vibrate under the action of the slit device, further promoting the shedding of dust particles on the umbrella blades. In the event of windy and rainy weather, the slit device increases the scouring force of rainwater on the umbrella blades, which can effectively remove stains on the umbrella blades, thereby reducing the aging rate of the silicone rubber umbrella blades and extending the service life of the surge arrester body.

[0013] 2. This invention, through the internal heat dissipation and dust removal structure, utilizes a vertical slit assembly inside the hollow insulating tube of the surge arrester body during normal operation. Air flows upward from the lower end ventilation hole and through the vertical slit assembly, significantly accelerating the airflow within the cavity. This reduces the heat generated during normal operation, ensuring the internal temperature of the surge arrester body remains below atmospheric temperature. When the surge arrester body is struck by lightning or experiences an overvoltage during grid operation, its temperature rises rapidly. The vertical slit assembly within the hollow cavity quickly carries the heat out of the cavity, causing a rapid temperature drop and preventing thermal collapse damage caused by overheating. This extends the lifespan of the surge arrester body and also flushes out dust from the hollow insulating tube.

[0014] 3. By setting up a rotating structure and using wind as the driving force, the first and second pillars rotate circumferentially around the arrester body as the axis. The position of the port at the narrow end of the parallel slit assembly is changed, which can scour different positions around the circumference of the arrester body blades. The scouring effect is more comprehensive and better, and the aging rate of the silicone blades is greatly reduced.

[0015] 4. This invention features a bird-repelling structure. The first and second plates rotate on their own axis while also rotating in a circular motion. Since the surfaces of the first and second plates are coated with a reflective metallic material, including but not limited to aluminum and silver, the birds around the surge arrester can be driven away. Because bird droppings can affect the performance of the surge arrester, this invention effectively prevents birds from landing on the surge arrester and their droppings from adhering to it. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the surge arrester body of an automatic cooling and dust removal surge arrester according to the present invention; Figure 2 This is a schematic diagram of the external dust removal structure of an automatic cooling and dust removal surge arrester according to the present invention; Figure 3 This is a front view of the rotating structure of an automatic cooling and dust removal surge arrester according to the present invention; Figure 4 This is a schematic diagram of the wind baffle plate of an automatic cooling and dust removal surge arrester according to the present invention; Figure 5 This is a top view of a hollow dustproof end cover of an automatic cooling and dust removal surge arrester according to the present invention; Figure 6 This is a schematic diagram of the bird-repelling structure of an automatic cooling and dust removal lightning arrester according to the present invention; In the diagram: 1. Parallel slit assembly; 2. First support column; 3. Insulating bracket; 4. Hollow dustproof end cap; 5. Hollow end cap channel; 6. Vertical slit assembly; 7. Waterproof membrane; 8. Hollow insulating tube; 9. Crimped terminal; 10. End ventilation hole; 11. Annular resistor; 12. Wind baffle; 13. Mounting plate; 14. Upper support frame; 15. Lower support frame; 16. Mounting rod; 17. Bearing; 18. Second support column; 19. Insulating mounting base; 20. Rotary shaft seat; 21. Support rod; 22. First page plate; 23. Second page plate. Detailed Implementation

[0017] An automatic cooling and dust removal surge arrester, such as Figure 1-6 As shown, the device includes a mounting rod 16, with a mounting plate 13 fixedly connected to the upper end of the mounting rod 16. The surge arrester body is mounted on the mounting plate 13. A rotating structure is provided at the lower end of the mounting rod 16. The rotating structure includes an upper support frame 14 and a lower support frame 15, which are rotatably connected to the upper and lower ends of the mounting rod 16, respectively. Several wind baffles 12 that can rotate with the wind direction are provided between the upper support frame 14 and the lower support frame 15. An insulating bracket 3 is fixedly connected to the upper end of the upper support frame 14. An external dust removal structure is provided on the insulating bracket 3. The external dust removal structure includes several parallel slit assemblies 1 corresponding to the surge arrester body. An internal heat dissipation and dust removal structure is provided inside the surge arrester body. The internal heat dissipation and dust removal structure includes several vertical slit assemblies 6.

[0018] In use, the mounting rod 16 and mounting plate 13 support and fix the surge arrester body. Under the action of wind, the rotating structure works. Under the action of the wind baffle 12, the upper support frame 14 and the lower support frame 15 rotate around the mounting rod 16. The rotation of the upper support frame 14 can drive the insulating bracket 3 to rotate. During the rotation of the insulating bracket 3, the external dust removal structure works. Under the action of the parallel slit assembly 1, a "slit effect" is generated, thereby increasing the wind speed. The parallel slit assembly 1 can increase the air flow speed on the umbrella surface of the surge arrester body, making it difficult for dust to settle on the umbrella blades. When the surge arrester body is subjected to overvoltage and heats up, the internal temperature of the surge arrester body cavity rises, creating a pressure difference with the external air, which promotes air circulation in the cavity. At the same time, under the action of the vertical slit assembly 6, the air flow speed is accelerated, reducing the heat generated by the surge arrester body during normal operation, and causing the internal temperature of the surge arrester body to be lower than the atmospheric temperature during normal operation.

[0019] like Figure 2 and 4 As shown, the wind baffle 12 is rotatably connected to the upper support frame 14 and the lower support frame 15 respectively, and the upper and lower end cut surfaces of the wind baffle 12 are flat with the upper support frame 14 and the lower support frame 15 respectively. The upper support frame 14 and the lower support frame 15 are both provided with bearings 17 that are rotatably connected to the mounting rod 16.

[0020] Preferably, when wind blows onto the wind deflector 12, the wind deflector 12 causes the upper support frame 14 and the lower support frame 15 to rotate along the mounting rod 16. The bearing 17 can greatly reduce the friction between the mounting rod 16 and the upper support frame 14 and the lower support frame 15 during rotation.

[0021] like Figure 1 and 2 As shown in Figure 3, the external dust removal structure also includes a first pillar 2 and a second pillar 18 that are fixedly connected to both ends of the insulating support 3 respectively. A plurality of parallel slit assemblies 1 are evenly arranged on the first pillar 2 and the second pillar 18. The coarse end of the parallel slit assembly 1 is located on the outside, and the fine end is opposite to the outside of the surge arrester body.

[0022] Preferably, the grounding terminal of the surge arrester body is connected to the insulating support 3. The number of parallel slit components 1 on the first support 2 and the second support 18 can be set according to the number of large umbrellas. When airflow passes, the parallel slit components 1 generate a "slit effect" to increase the wind speed. The parallel slit components 1 can increase the airflow speed on the umbrella surface of the surge arrester body, making it difficult for dust to settle on the umbrella blades. When strong winds pass, the silicone rubber umbrella blades of the surge arrester body will vibrate under the action of the parallel slit components 1, further promoting the shedding of dust particles on the umbrella blades. In windy and rainy weather, the parallel slit components 1 increase the scouring force of rainwater on the umbrella blades, which can effectively remove stains on the umbrella blades, thereby reducing the aging rate of the silicone rubber umbrella blades and extending the service life of the surge arrester body.

[0023] like Figure 1 and 5 As shown, the internal heat dissipation and dust removal structure includes a hollow dustproof end cover 4 connected to the upper end of the surge arrester body. The hollow dustproof end cover 4 has a hollow end cover channel 5. The surge arrester body is provided with a hollow insulating tube 8 connected to the vertical slit assembly 6. The hollow insulating tube 8 is covered with a waterproof membrane 7. Several annular resistor sheets 11 are evenly installed on the outside of the hollow insulating tube 8. The hollow insulating tube 8 and the hollow end cover channel 5 are connected. The lower end of the surge arrester body is provided with crimp terminals 9 connected to the mounting plate 13 on both sides. The lower end of the crimp terminals 9 is provided with an end ventilation hole 10 connected to the hollow insulating tube 8.

[0024] Preferably, the vertical slit assembly 6 inside the hollow insulating tube 8 of the surge arrester body forms an air passage with the crimp terminal 9 with end ventilation holes 10 and the hollow end cover channel 5 inside the dustproof end cover. When the surge arrester body is subjected to overvoltage and heats up, the internal temperature of the hollow insulating tube 8 cavity rises, creating a pressure difference with the outside air, which promotes air circulation in the cavity. At the same time, under the action of the vertical slit assembly 6, the air flow speed is accelerated, reducing the heat generated by the surge arrester body during normal operation, and causing the internal temperature of the surge arrester body to be lower than the atmospheric temperature during normal operation. When the surge arrester body is struck by lightning or subjected to grid operation overvoltage, the surge arrester body will heat up rapidly. The vertical slit assembly 6 inside the cavity of the hollow insulating tube 8 of the surge arrester body can quickly carry the heat out of the cavity of the surge arrester body, thereby causing the temperature of the surge arrester body to drop rapidly, avoiding thermal collapse damage caused by temperature rise, and extending the service life of the surge arrester body.

[0025] like Figure 3 As shown, the upper support frame 14 and the lower support frame 15 are respectively provided with limiting rings that are fixedly connected to the mounting rod 16 at their upper and lower ends, and the lower end of the mounting rod 16 is fixedly connected to an insulating mounting base 19.

[0026] Preferably, the limiting ring provides support and limits the upper support frame 14 and the lower support frame 15, while the insulating mounting base 19 provides support and fixation for the entire equipment.

[0027] like Figure 6 As shown, the upper ends of the first pillar 2 and the second pillar 18 are respectively provided with bird-repelling structures that cooperate with the rotating structure. The bird-repelling structure includes a rotating shaft seat 20 fixedly connected to the upper end of the first pillar 2. A support rod 21 is rotatably connected to the inner wall of the rotating shaft seat 20. The two ends of the support rod 21 are respectively embedded with a first plate 22 and a second plate 23. The surfaces of the first plate 22 and the second plate 23 are coated with a layer of reflective metal material.

[0028] Preferably, during the circumferential rotation of the first support column 2 and the second support column 18, a bird-repelling structure is set up. Driven by the wind, the first plate 22 and the second plate 23 drive the support rod 21 to rotate along the inner wall of the rotating shaft seat 20. The first plate 22 and the second plate 23 rotate circumferentially while rotating on their own axis. Since the surfaces of the first plate 22 and the second plate 23 are covered with a layer of reflective metal material, including but not limited to aluminum and silver, the range of bird repellency is greatly expanded. Birds around the arrester body can be driven away. Since bird droppings can affect the performance of the arrester body, it can effectively prevent birds from landing on the arrester body and their droppings from adhering to the arrester body.

[0029] The working process of this invention is as follows: During use, the mounting rod 16 and mounting plate 13 support and fix the surge arrester body. Under wind force, the wind baffle 12 adjusts its rotating surface. Blocked by the upper support frame 14 and lower support frame 15, the wind baffle 12 drives the upper support frame 14 and lower support frame 15 to rotate around the mounting rod 16. The rotation of the upper support frame 14 drives the insulating support 3 to rotate. The insulating support 3 drives the first pillar 2 and the second pillar 18 to rotate circumferentially. Changing the position of the narrow end of the parallel slit assembly 1 on the first pillar 2 and the second pillar 18 allows for scouring of different positions on the circumference of the surge arrester body's blades, resulting in a more effective scouring effect. Comprehensive and better, greatly reducing the aging rate of silicone umbrella blades, and during the circumferential rotation of the first pillar 2 and the second pillar 18, driven by the wind, the first leaf plate 22 and the second leaf plate 23 drive the support rod 21 to rotate along the inner wall of the rotating shaft seat 20. The first leaf plate 22 and the second leaf plate 23 rotate circumferentially while rotating on their own axis. Since the surface of the first leaf plate 22 and the second leaf plate 23 is covered with a layer of reflective metal material, including but not limited to aluminum, silver, etc., it can drive away birds around the surge arrester body. Since the droppings produced by birds will affect the performance of the surge arrester body, it can effectively prevent birds from landing on the surge arrester body and the droppings produced by birds from adhering to the surge arrester body.

[0030] The grounding terminal of the surge arrester body is connected to the insulating support 3. The number of parallel slit components 1 on the first support 2 and the second support 18 can be set according to the number of large umbrellas. When airflow passes by, the parallel slit components 1 generate a "slit effect" to increase the wind speed. The parallel slit components 1 can increase the airflow speed on the umbrella surface of the surge arrester body, making it difficult for dust to settle on the umbrella blades. When strong winds pass by, the silicone rubber umbrella blades of the surge arrester body will vibrate under the action of the parallel slit components 1, further promoting the shedding of dust particles on the umbrella blades. In windy and rainy weather, the parallel slit components 1 increase the scouring force of rainwater on the umbrella blades, which can effectively remove stains on the umbrella blades, thereby reducing the aging rate of the silicone rubber umbrella blades and extending the service life of the surge arrester body.

[0031] The vertical slit assembly 6 inside the hollow insulating tube 8 of the surge arrester body forms an air passage with the crimped terminal 9 with end ventilation holes 10 and the hollow end cover channel 5 inside the dustproof end cover. When the surge arrester body is subjected to overvoltage and heats up, the temperature inside the cavity of the hollow insulating tube 8 rises, creating a pressure difference with the outside air, which promotes air circulation within the cavity. Air enters the hollow insulating tube 8 through the end ventilation holes 10, and at the same time, the vertical slit assembly 6 accelerates the airflow speed, reducing the heat generated by the surge arrester body during normal operation and promoting the surge arrester's cooling and heat dissipation. When the arrester body is operating normally, its internal temperature is lower than the atmospheric temperature. When the arrester body is struck by lightning or subjected to overvoltage during power grid operation, the arrester body will heat up rapidly. The vertical slit assembly 6 in the cavity of the hollow insulating tube 8 of the arrester body can quickly carry the heat out of the cavity of the arrester body, thereby causing the temperature of the arrester body to drop rapidly. This prevents the arrester body from being damaged by thermal collapse due to temperature rise, and extends the service life of the arrester body. In addition, the air flow rate in the hollow insulating tube 8 is relatively fast, which can remove the dust inside the hollow insulating tube 8.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. An automatic cooling and dust removal surge arrester, characterized in that: The device includes an installation rod (16), with an installation plate (13) fixedly connected to the upper end of the installation rod (16). The arrester body is mounted on the installation plate (13). A rotating structure is provided at the lower end of the installation rod (16). The rotating structure includes an upper support frame (14) and a lower support frame (15) that are rotatably connected to the upper and lower ends of the installation rod (16), respectively. Several wind baffles (12) that can rotate with the wind direction are provided between the upper support frame (14) and the lower support frame (15). An insulating bracket (3) is fixedly connected to the upper end of the upper support frame (14). An external dust removal structure is provided on the insulating bracket (3). The external dust removal structure includes several parallel slit assemblies (1) corresponding to the arrester body. An internal heat dissipation and dust removal structure is provided inside the arrester body. The internal heat dissipation and dust removal structure includes several vertical slit assemblies (6). The external dust removal structure also includes slits connected to the two ends of the insulating bracket (3). The first support column (2) and the second support column (18) are fixedly connected respectively. A plurality of parallel slit components (1) are evenly arranged on the first support column (2) and the second support column (18). The thick end of the parallel slit component (1) is on the outside, and the thin end is opposite to the outside of the arrester body. The internal heat dissipation and dust removal structure includes a hollow dustproof end cap (4) connected to the upper end of the arrester body. A hollow end cap channel (5) is opened in the hollow dustproof end cap (4). A hollow insulating tube (8) connected to the vertical slit component (6) is arranged inside the arrester body. A waterproof membrane (7) is covered inside the hollow insulating tube (8). The hollow insulating tube (8) and the hollow end cap channel (5) are connected. A crimping terminal (9) connected to the mounting plate (13) is arranged on both sides of the lower end of the arrester body. A vent hole (10) connected to the hollow insulating tube (8) is arranged at the lower end of the crimping terminal (9).

2. The automatic cooling and dust removal surge arrester according to claim 1, characterized in that: The wind baffle (12) is rotatably connected to the upper support frame (14) and the lower support frame (15) respectively, and the upper and lower end cut surfaces of the wind baffle (12) are flush with the upper support frame (14) and the lower support frame (15) respectively. The upper support frame (14) and the lower support frame (15) are both equipped with bearings (17) that are rotatably connected to the mounting rod (16).

3. The automatic cooling and dust removal surge arrester according to claim 1, characterized in that: The upper support frame (14) and the lower support frame (15) are respectively provided with limiting rings that are fixedly connected to the mounting rod (16) at their upper and lower ends, and the lower end of the mounting rod (16) is fixedly connected to an insulating mounting seat (19).

4. The automatic cooling and dust removal surge arrester according to claim 1, characterized in that: The upper ends of the first pillar (2) and the second pillar (18) are respectively provided with bird-repelling structures that cooperate with the rotating structure. The bird-repelling structure includes a rotating shaft seat (20) fixedly connected to the upper end of the first pillar (2). A support rod (21) is rotatably connected to the inner wall of the rotating shaft seat (20). The two ends of the support rod (21) are respectively embedded with a first page plate (22) and a second page plate (23). The surfaces of the first page plate (22) and the second page plate (23) are coated with a layer of reflective metal material.

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