An ultra-high voltage isolating switch shielding cover with asymmetric layered structure

Abstract

The utility model relates to electrician technical field, and specifically disclose a kind of extra-high voltage isolating switch shield of asymmetric layered structure, pass through shielding device design, to reach the effect of equipment closure, accurate control asymmetric electric field, solve the problem of "local electric field concentration", give consideration to "high insulation" and "partial discharge protection", adapt complex insulation scene, strengthen "mechanical performance adaptability", cope with asymmetric load, optimize "environmental tolerance", solve the problem of "local corrosion or wear", reduce "corona loss" and "temperature rise risk", adapt extra-high voltage energy-saving demand, first annular frame and second annular frame are used to guide component rotation, optimize electric field distribution, inhibit corona and insulation breakdown, isolate external pollutants, protect key components, resist external force impact, maintain structural stability, optimize current path, reduce local overheating.

Description

Technical Field

[0001] This utility model relates to the field of electrical engineering technology, specifically to an ultra-high voltage disconnector shielding cover with an asymmetric layered structure. Background Technology

[0002] High-voltage electrical equipment such as UHV disconnectors commonly uses grading rings with a certain diameter as an effective electric field shielding device. To shield high-voltage live parts as much as possible, grading ring groups arranged vertically or horizontally are generally used to wrap the high-voltage live parts in the middle, so as to uniformly distribute the spatial electric field and avoid local electric field protrusion, which would affect the insulation performance of UHV disconnectors and other electrical equipment. However, when the voltage level reaches 800-1100kV and the disconnectors and other equipment need to be installed indoors, in order to conserve indoor space, the electrical clearances between equipment are very tight, and the equipment is very close to walls and roofs. Ordinary ring grading devices, due to the large area of ​​void in the middle, cause the electric field of live parts such as equipment fittings in the middle to protrude. Under large overvoltages, sudden discharge will occur, which will seriously affect the stable operation of the high-voltage power grid. Therefore, for such a highly saturated electric field environment, there is a particular need for a shielding device that can effectively shield the high-voltage live parts of the equipment, and the installation process and difficulty of such a device need to be comparable to that of grading rings, so as not to cause installation trouble and difficulty.

[0003] A new design was developed to address the existing situation. Utility Model Content

[0004] To solve the problems mentioned above, this utility model is achieved through the following technical solution: an ultra-high voltage disconnector shielding cover with an asymmetric layered structure, including a shielding device, wherein a pneumatic device is fixedly connected to the bottom of the shielding device;

[0005] The shielding device includes a shielding base, with a first annular frame fixedly connected to the top of the shielding base. A first semi-circular cover is rotatably connected to the outer side of the first annular frame. A second annular frame is fixedly connected to the top of the shielding base near the first annular frame. The first and second annular frames guide the rotation of components, optimize the electric field distribution, suppress corona discharge and insulation breakdown, isolate external contaminants, protect critical components, resist external impacts, maintain structural stability, optimize current paths, and reduce local overheating. A second semi-circular cover is rotatably connected to the outer side of the second annular frame. A receiving shaft is fixedly connected to the middle of the top of the first semi-circular cover. A motor is fixedly connected to the outer side of the receiving shaft away from the first semi-circular cover. The motor controls the rotation of the receiving shaft, which in turn drives the second semi-circular cover to rotate, thereby achieving the function of closing the device and precisely controlling the asymmetric electric field. To address the challenge of "localized electric field concentration," while balancing "high insulation" and "partial discharge protection," this system adapts to complex insulation scenarios, enhances "mechanical performance adaptability," handles asymmetric loads, optimizes "environmental tolerance," resolves "localized corrosion or wear" issues, reduces "corona loss" and "temperature rise risk," and meets the energy-saving requirements of ultra-high voltage. The shielding base is fixedly connected to the top of the pneumatic device at its bottom center, and a support mechanism is fixedly connected to the outside of the shielding base. This serves as a shock absorber, resisting mechanical impacts, preventing damage to the shielding structure, coping with external collisions, adapting to vibrations during disconnector operation, reducing corona risk, assisting in maintaining insulation performance, extending equipment life, and reducing maintenance costs. A sealing strip is fixedly connected to one side of the first semi-circular shield to improve the sealing between components, thereby reducing the entry of external impurities and minimizing their impact on the equipment.

[0006] Preferably, the support mechanism includes a support frame, with a connecting end fixedly connected to the outer side of the support frame. A telescopic rod is fixedly connected to the outer side of the connecting end away from the support frame. The telescopic rod compresses and contracts the spring strip, thereby playing a role in shock absorption and buffering, resisting mechanical impact, avoiding damage to the shielding structure, coping with external force collisions, adapting to the vibration of the disconnecting switch operation, reducing the risk of corona discharge, helping to maintain insulation performance, extending equipment life, and reducing operation and maintenance costs. A spring strip is sleeved on the outer side of the telescopic rod, and a support base is fixedly connected to the outer side of the telescopic rod away from the connecting end.

[0007] Preferably, the pneumatic device includes a connecting pipe, with a grid plate fixedly connected to the top of the connecting pipe to block external impurities from entering, preventing contamination of the equipment and ensuring its safety. A pneumatic duct is fixedly connected to the bottom of the connecting pipe, and a fan is fixedly connected to one side of the connecting pipe to dissipate heat generated inside the shielding device through the airflow, thereby achieving ventilation and heat dissipation. A grid cover is fixedly connected to the side of the connecting pipe near the fan, and a friction mechanism is rotatably connected to the outside of the grid cover. The friction mechanism rubs against the outside of the grid cover to clean impurities from the surface of the components, reducing impurity accumulation and preventing any impact on ventilation efficiency.

[0008] Preferably, a receiving base is fixedly connected to the inner wall of the pneumatic duct near the connecting pipe, and a filter plate is rotatably connected to the outer side of the receiving base. This serves to block the intrusion of solid impurities, prevent contamination of the internal structure of the shield, prevent contamination and jamming of internal components, prevent a decrease in insulation performance, balance "impurity protection" and "heat dissipation requirements," protect against liquid impurities, reduce environmental corrosion, maintain a "clean electric field environment" inside the shield, and help suppress corona discharge. The outer side of the filter plate has a plate surface cutout, which optimizes the airflow path, reduces heat dissipation resistance, improves heat dissipation efficiency, expands the effective ventilation area, reduces airflow resistance, guides airflow in a direction, adapts to the heat dissipation requirements inside the shield, reduces the "electric field interference" of the filter plate itself, ensures the electrical performance of the shield, and improves the operating efficiency of components by rotating the filter plate to make full contact with impurities in the airflow.

[0009] Preferably, the friction mechanism includes a connecting shaft, the outer side of which is rotatably connected to the outer side of the grille cover. A fan blade is fixedly connected to the outer side of the connecting shaft away from the fan, and a connecting bracket is fixedly connected to the outer side of the connecting shaft away from the fan blade. The connecting bracket controls the friction plate to rub against the outer side of the grille cover, thereby cleaning impurities on the surface of the component, reducing impurity accumulation, avoiding affecting ventilation efficiency, and preventing impurities from clogging the holes of the component. The friction plate is fixedly connected to the outer side of the connecting bracket away from the connecting shaft.

[0010] Beneficial effects

[0011] This invention provides an ultra-high voltage disconnector shielding cover with an asymmetric layered structure. It has the following advantages:

[0012] I. The asymmetric layered structure of the UHV disconnector shielding cover achieves equipment closure through shielding device design, precisely controls the asymmetric electric field, solves the problem of "local electric field concentration", balances "high insulation" and "partial discharge protection", adapts to complex insulation scenarios, enhances "mechanical performance adaptability", copes with asymmetric loads, optimizes "environmental tolerance", solves the problem of "local corrosion or wear", reduces "corona loss" and "temperature rise risk", and meets the energy-saving requirements of UHV. The first and second ring frames are used to guide the rotation of components, optimize the electric field distribution, suppress corona and insulation breakdown, isolate external contaminants, protect key components, resist external impacts, maintain structural stability, optimize current path, and reduce local overheating.

[0013] II. The asymmetrical layered structure of the UHV disconnector shielding cover, through the design of the support mechanism, plays a role in shock absorption and buffering, resisting mechanical impact, avoiding damage to the shielding cover structure, coping with external force collisions, adapting to the vibration of disconnector operation, reducing corona risk, helping to maintain insulation performance, extending equipment life, reducing operation and maintenance costs, and the support frame plays a supporting role.

[0014] Third, the asymmetric layered structure of the UHV disconnector shielding cover, through the design of the pneumatic device, effectively blocks the intrusion of solid impurities, avoids contamination of the internal structure of the shielding cover, prevents contamination and jamming of internal components, avoids degradation of insulation performance, balances "impurity protection" and "heat dissipation requirements", protects against liquid impurities, reduces environmental corrosion, maintains a "clean electric field environment" inside the shielding cover, and helps suppress corona discharge. By opening the plate surface, it optimizes the airflow path, reduces heat dissipation resistance, improves heat dissipation efficiency, expands the effective ventilation area, reduces airflow resistance, guides airflow in a direction, adapts to the heat dissipation requirements inside the shielding cover, reduces the "electric field interference" of the filter plate itself, and ensures the electrical performance of the shielding cover. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the asymmetric layered structure of the UHV disconnector shielding cover of this utility model;

[0016] Figure 2 This is a schematic diagram of the shielding device structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the support mechanism structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the structure of the pneumatic device of this utility model;

[0019] Figure 5 This is a schematic diagram of the friction mechanism of this utility model.

[0020] In the diagram: 1. Shielding device; 2. Pneumatic device; 11. Shielding base; 12. First ring frame; 13. First semi-circular cover; 14. Second ring frame; 15. Second semi-circular cover; 16. Sealing strip; 17. Receiving shaft; 18. Motor; 19. Support mechanism; 191. Connecting end; 192. Telescopic rod; 193. Spring strip; 194. Support base; 195. Support frame; 21. Connecting pipe; 22. Grille plate; 23. Pneumatic duct; 24. Fan; 25. Friction mechanism; 26. Grille cover; 27. Receiving base; 28. Filter plate; 29. ​​Plate surface cutout; 251. Connecting shaft; 252. Fan blade; 253. Connecting bracket; 254. Friction plate. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-3 This utility model provides a technical solution: an ultra-high voltage disconnect switch shield with an asymmetric layered structure, including a shielding device 1, and a pneumatic device 2 fixedly connected to the bottom of the shielding device 1;

[0023] The shielding device 1 includes a shielding base 11, a first annular frame 12 fixedly connected to the top of the shielding base 11, a first semi-circular cover 13 rotatably connected to the outer side of the first annular frame 12, a second annular frame 14 fixedly connected to the top of the shielding base 11 near the first annular frame 12, a second semi-circular cover 15 rotatably connected to the outer side of the second annular frame 14, a receiving shaft 17 fixedly connected to the middle of the top of the first semi-circular cover 13, a motor 18 fixedly connected to the outer side of the receiving shaft 17 away from the first semi-circular cover 13, a top of the bottom of the shielding base 11 fixedly connected to the top of the pneumatic device 2, a support mechanism 19 fixedly connected to the outer side of the shielding base 11, and a sealing strip 16 fixedly connected to the outer side of the first semi-circular cover 13. The receiving shaft 17 is rotated by the motor 18, which in turn drives the second semi-arc cover 15 to rotate, thereby achieving the function of equipment closure. This precisely controls the asymmetric electric field, solving the problem of "local electric field concentration," balancing "high insulation" and "partial discharge protection," adapting to complex insulation scenarios, enhancing "mechanical performance adaptability," coping with asymmetric loads, optimizing "environmental tolerance," solving the problem of "local corrosion or wear," reducing "corona loss" and "temperature rise risk," and adapting to ultra-high voltage energy-saving requirements. The first ring frame 12 and the second ring frame 14 are used to guide the rotation of the components. Optimize electric field distribution, suppress corona and insulation breakdown, isolate external contaminants, protect key components, resist external impacts, maintain structural stability, optimize current path, reduce local overheating, and the sealing strip 16 improves the sealing between components to reduce the entry of external impurities and reduce the impact on the equipment. The support mechanism 19 supports the shielding base 11 to play a role in shock absorption and buffering, resist mechanical impact, avoid damage to the shielding structure, cope with external collisions, adapt to the vibration of the disconnecting switch operation, reduce corona risk, help maintain insulation performance, extend equipment life, and reduce operation and maintenance costs.

[0024] The support mechanism 19 includes a support frame 195. A connecting end 191 is fixedly connected to the outer side of the support frame 195. A telescopic rod 192 is fixedly connected to the outer side of the connecting end 191 away from the support frame 195. A spring strip 193 is sleeved on the outer side of the telescopic rod 192. A support base 194 is fixedly connected to the outer side of the telescopic rod 192 away from the connecting end 191. When the equipment vibrates, the telescopic rod 192 compresses and contracts the spring strip 193, thereby playing a role in shock absorption and buffering, resisting mechanical impact, avoiding damage to the shielding structure, coping with external force collisions, adapting to the vibration of the isolating switch operation, reducing the risk of corona discharge, helping to maintain insulation performance, extending equipment life, and reducing operation and maintenance costs. The support frame 195 provides support.

[0025] Please see Figure 4-5The pneumatic device 2 includes a connecting pipe 21, a grid plate 22 fixedly connected to the top of the connecting pipe 21, a pneumatic duct 23 fixedly connected to the bottom of the connecting pipe 21, a fan 24 fixedly connected to one side of the outside of the connecting pipe 21, and a grid cover 26 fixedly connected to the outside of the connecting pipe 21 near the fan 24. A friction mechanism 25 is rotatably connected to the outside of the grid cover 26. The fan 24 generates airflow, which dissipates heat generated inside the shielding device 1, thus achieving ventilation and heat dissipation. The grid plate 22 and the grid cover 26 prevent external impurities from entering, avoiding contamination of the equipment and ensuring its safety. The airflow drives the friction mechanism 25 to rotate, causing friction against the outside of the grid cover 26, thereby cleaning impurities from the surface of the components, reducing impurity accumulation, and preventing any impact on ventilation efficiency.

[0026] A receiving base 27 is fixedly connected to the inner wall of the pneumatic duct 23 near the connecting pipe 21. A filter plate 28 is rotatably connected to the outer side of the receiving base 27. The outer side of the filter plate 28 has a plate surface cutout 29. During the airflow, the filter plate 28 can adsorb impurities and moisture in the airflow, thereby blocking the intrusion of solid impurities, avoiding contamination of the internal structure of the shield, preventing contamination and jamming of internal components, avoiding a decrease in insulation performance, balancing "impurity protection" and "heat dissipation requirements", protecting against liquid impurities, reducing environmental corrosion, maintaining a "clean electric field environment" inside the shield, and helping to suppress corona discharge. By opening the plate surface cutout 29, the airflow path is optimized, heat dissipation resistance is reduced, heat dissipation efficiency is improved, the effective ventilation area is expanded, airflow resistance is reduced, airflow is guided in a direction, adapts to the heat dissipation requirements inside the shield, reduces the "electric field interference" of the filter plate itself, and ensures the electrical performance of the shield. The rotation of the filter plate 28 allows it to fully contact impurities in the airflow, thereby improving the operating efficiency of the components.

[0027] The friction mechanism 25 includes a connecting shaft 251, the outer side of which is rotatably connected to the outer side of the grille cover 26. A fan blade 252 is fixedly connected to the outer side of the connecting shaft 251 away from the fan 24. A connecting bracket 253 is fixedly connected to the outer side of the connecting shaft 251 away from the fan blade 252. A friction plate 254 is fixedly connected to the outer side of the connecting bracket 253 away from the connecting shaft 251. The fan 24 generates airflow, which acts on the surface of the fan blade 252. The fan blade 252 drives the connecting shaft 251 to rotate, causing the connecting bracket 253 to control the friction plate 254 to rub against the outer side of the grille cover 26. This cleans impurities from the component surface, reduces impurity accumulation, avoids affecting ventilation efficiency, and prevents impurities from clogging the component's openings.

[0028] During operation, the motor 18 controls the rotation of the receiving shaft 17, which in turn drives the second semi-arc cover 15 to rotate, thus achieving the function of equipment closure. This precisely controls the asymmetric electric field, solving the problem of "local electric field concentration," balancing "high insulation" and "partial discharge protection," adapting to complex insulation scenarios, enhancing "mechanical performance adaptability," handling asymmetric loads, optimizing "environmental tolerance," solving the problem of "local corrosion or wear," reducing "corona loss" and "temperature rise risk," and adapting to ultra-high voltage energy-saving requirements. The first ring frame 12 and the second ring frame 14 guide the rotation of components, optimize the electric field distribution, suppress corona and insulation breakdown, isolate external contaminants, protect critical components, resist external impacts, maintain structural stability, optimize the current path, and reduce local overheating. The sealing strip 16 improves the sealing between components, thereby reducing the entry of external impurities. To minimize the impact on the equipment, the shielding base 11 is supported by the support mechanism 19, which acts as a shock absorber, resists mechanical impact, avoids damage to the shielding structure, copes with external collisions, adapts to vibrations during disconnection switch operation, reduces corona risk, helps maintain insulation performance, extends equipment life, and reduces maintenance costs. A fan 2 is installed at the bottom of the shielding base 11. The fan 2 generates airflow through the fan 24, which dissipates the heat generated inside the shielding device 1 to the outside, thus achieving ventilation and heat dissipation. The grille 22 and grille cover 26 prevent external impurities from entering, avoiding contamination of the equipment and preventing impact on equipment safety. The friction mechanism 25 is rotated by the airflow, and the friction mechanism 25 rubs against the outside of the grille cover 26, thereby cleaning impurities from the surface of the components, reducing impurity accumulation, and avoiding affecting ventilation efficiency.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultra-high voltage disconnector shield of asymmetric layered structure, characterized in that, Includes a shielding device (1), and a pneumatic device (2) is fixedly connected to the bottom of the shielding device (1). The shielding device (1) includes a shielding base (11), a first ring frame (12) is fixedly connected to the top of the shielding base (11), a first semi-circular cover (13) is rotatably connected to the outer side of the first ring frame (12), a second ring frame (14) is fixedly connected to the side of the top of the shielding base (11) close to the first ring frame (12), a second semi-circular cover (15) is rotatably connected to the outer side of the second ring frame (14), a receiving shaft (17) is fixedly connected to the middle of the top of the first semi-circular cover (13), a motor (18) is fixedly connected to the side of the receiving shaft (17) away from the first semi-circular cover (13), the middle of the bottom of the shielding base (11) is fixedly connected to the top of the pneumatic device (2), a support mechanism (19) is fixedly connected to the outer side of the shielding base (11), and a sealing strip (16) is fixedly connected to the outer side of the first semi-circular cover (13).

2. The ultra-high voltage disconnector shielding cover with an asymmetric layered structure according to claim 1, characterized in that: The support mechanism (19) includes a support frame (195), a connecting end (191) is fixedly connected to the outside of the support frame (195), a telescopic rod (192) is fixedly connected to the outside of the connecting end (191) away from the support frame (195), a spring strip (193) is sleeved on the outside of the telescopic rod (192), and a support base (194) is fixedly connected to the outside of the telescopic rod (192) away from the connecting end (191).

3. The ultra-high voltage disconnector shielding cover with an asymmetric layered structure according to claim 1, characterized in that: The pneumatic device (2) includes a connecting pipe (21), a grid plate (22) is fixedly connected to the top of the connecting pipe (21), a pneumatic pipe (23) is fixedly connected to the bottom of the connecting pipe (21), a fan (24) is fixedly connected to one side of the outside of the connecting pipe (21), a grid cover (26) is fixedly connected to the outside of the connecting pipe (21) near the fan (24), and a friction mechanism (25) is rotatably connected to the outside of the grid cover (26).

4. The ultra-high voltage disconnector shielding cover with an asymmetric layered structure according to claim 3, characterized in that: A receiving base (27) is fixedly connected to the inner wall of the pneumatic duct (23) near the connecting pipe (21). A filter plate (28) is rotatably connected to the outer side of the receiving base (27). A plate surface cutout (29) is opened on the outer side of the filter plate (28).

5. The ultra-high voltage disconnector shielding cover with an asymmetric layered structure according to claim 3, characterized in that: The friction mechanism (25) includes a connecting shaft (251), the outer side of which is rotatably connected to the outer side of the grille cover (26), a fan blade (252) is fixedly connected to the outer side of the connecting shaft (251) away from the fan (24), a connecting bracket (253) is fixedly connected to the outer side of the connecting shaft (251) away from the fan blade (252), and a friction plate (254) is fixedly connected to the outer side of the connecting bracket (253) away from the connecting shaft (251).

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