Adjustable voltage-sharing arc striking structure

Abstract

The utility model discloses an adjustable voltage-sharing arc striking structure which comprises a connecting plate body, a first groove is formed in the left of the connecting plate body, a second groove is formed in the right of the connecting plate body, a third groove is formed in the middle of the connecting plate body, and an arc striking supporting rod is installed in the third groove. A plurality of grooves are formed in the connecting plate body, and the arc striking supporting rod, the arcing horn, the limiting plates, the gaskets, various nuts and other components are installed, so that the arc striking supporting rod, the arcing horn, the limiting plates, the gaskets, the various nuts and the like are arranged on the connecting plate body, and the arc striking supporting rod, the arcing horn, the limiting plates and the various nuts are arranged on the connecting plate body. And a scientific and reasonable structure system is constructed. In the working process, the arc striking supporting rod and the arcing horn are arranged, so that electric arcs can be guided in time under specific conditions, local voltage is prevented from being too high, electric field distribution is improved, and voltage distribution at different positions is more uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning protection for overhead transmission lines, in particular to an adjustable voltage equalizing arc striking structure. Background Technique

[0002] Transmission lines are one of the most important equipment in the power system. They are long and in a complex environment. The reliable operation degree is directly related to the safe operation of the power system. Faults caused by lightning strikes account for a large proportion. When a transmission line is struck by lightning, the impact flashover occurs, resulting in the flashover of the line insulator, and then a large power frequency arc is generated, which often damages the insulator and fittings, leading to line breakage accidents from time to time. At present, most of the lightning protection measures are of the plugging type. However, due to the high randomness of lightning, such lightning protection measures not only have high investment but also are difficult to implement technically. By using a gap device connected in parallel beside the insulator string, the arc can be effectively discharged.

[0003] The existing patent publication number is CN206991857U, which discloses an arc striking angle assembly for the high voltage end of a parallel gap. This arc striking angle assembly for the high voltage end of a parallel gap belongs to the technical field of lightning protection for overhead transmission lines, and solves the problems of poor voltage equalizing effect, low convenience of installation and disassembly, and poor corona suppression effect in the prior art. It includes an arc striking angle, a corona ring, and an installation structure for connecting the arc striking angle and the corona ring to the insulator. The arc striking angle includes a first arc-shaped connecting rod and a body. One end of the first arc-shaped connecting rod is provided with a body, and the other end is fixedly connected to the installation structure. The corona ring includes a second arc-shaped connecting rod and a circular ring body. One end of the second arc-shaped connecting rod is provided with a circular ring body, and the other end is fixedly connected to the installation structure. The utility model adopts an arc striking angle in the shape of an open circular ring, making the voltage distribution of the insulator string smooth. Through the installation structure with the first and second arc-shaped rings symmetrically arranged, the convenience of installation is improved, and the corona ring is used to suppress the generation of corona.

[0004] The existing arc striking angle assembly for the high voltage end of a parallel gap has obvious deficiencies in terms of voltage equalizing effect. Its arc striking angle adopts an open circular ring structure. Although it can affect the voltage distribution of the insulator string to a certain extent, the opening of the circular ring easily leads to electric field concentration, making the electric field intensity in this area quite different from other parts, thus affecting the overall voltage equalizing effect. Moreover, the design of the corona ring is mainly to suppress the generation of corona, and its contribution to voltage equalization may not be significant. In practical applications, it is difficult to meet the strict requirements for uniform voltage distribution under complex working conditions only relying on this structure, which may lead to too high local voltage, increasing the risk of equipment damage and affecting the safe and stable operation of the transmission line. Content of the Utility Model

[0005] The utility model aims at the above problems and provides an adjustable voltage equalizing arc striking structure that is simple in structure, convenient and reliable.

[0006] The technical solution of the present utility model is as follows: An adjustable voltage equalizing arc striking structure, including a connecting plate body. A first groove is provided directly to the left of the connecting plate body, a second groove is provided directly to the right of the connecting plate body, and a third groove is provided in the middle of the connecting plate body. An arc striking support rod is installed in the third groove. A first limiting plate is installed directly in front of the arc striking support rod, a second limiting plate is installed directly behind the first limiting plate, and a gasket is installed directly behind the second limiting plate.

[0007] A first nut is installed directly behind the gasket, and a second nut is installed directly behind the first nut.

[0008] A fixator is installed directly in front of the arc striking support rod. A fifth groove is provided in the middle of the fixator. An arc attracting angle is installed inside the fifth groove, and a third nut is installed directly above the fifth groove.

[0009] A fourth nut is installed directly below the fifth groove, and a fifth nut is installed directly below the fourth nut.

[0010] A first cable is installed inside the first groove. A sixth nut is installed directly in front of the first groove, and a seventh nut is installed directly behind the first groove. Insulators are installed on the first cable.

[0011] A second cable is installed inside the second groove. An eighth nut is installed directly in front of the second groove, and a ninth nut is installed directly behind the second groove. Insulators are installed on the second cable.

[0012] During the operation of the present utility model, by providing multiple grooves on the connecting plate body and installing components such as an arc striking support rod, an arc attracting angle, limiting plates, gaskets, and various nuts, a scientific and reasonable structural system is constructed. Among them, the settings of the arc striking support rod and the arc attracting angle can guide the arc in a timely manner under specific circumstances, avoid excessive local voltage, thereby improving the electric field distribution and making the voltage distribution more uniform at different positions. The multiple grooves on the connecting plate body and the precisely installed components cooperate with each other to further optimize the electric field environment, greatly enhance the voltage equalizing effect, reduce the risk of equipment damage caused by uneven voltage, and extend the service life of the equipment.

[0013] For the connection part between the cable and the connecting plate body, the methods of fixing with nuts and installing insulators are adopted, which not only ensure the firmness and stability of the cable connection but also greatly enhance the insulation performance. The insulators can effectively prevent current leakage and abnormal voltage fluctuations, making the voltage transmission between the cable and the connecting plate body more stable. At the same time, the fixing function of the nuts ensures that the connection part will not loosen during long-term use, further guaranteeing the stability and reliability of voltage equalization, thereby providing strong support for the safe operation of the entire system and fundamentally improving the overall voltage equalizing effect. Brief Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 It is a schematic side view structure diagram of the present utility model;

[0017] Figure 3 It is a schematic partial sectional view structure diagram of the present utility model;

[0018] Figure 4 It is a partial schematic diagram of the present utility model;

[0019] Description of the reference numerals: 1. Connecting plate body; 2. First groove; 3. Second groove; 4. Third groove; 5. Fourth groove; 6. Arc starting support rod; 7. First limiting plate; 8. Second limiting plate; 9. Gasket; 10. First nut; 11. Second nut; 12. Fixator; 13. Fifth groove; 14. Arc attracting angle; 15. Third nut; 16. Fourth nut; 17. Fifth nut; 18. First cable; 19. Sixth nut; 20. Seventh nut; 21. Insulator; 22. Second cable; 23. Eighth nut; 24. Ninth nut. Detailed Embodiments

[0020] The following will further describe the present utility model in detail Figures 1 - 4 in conjunction with the appended

[0021] As Figures 1 - 4 , the present utility model discloses an adjustable voltage equalizing arc starting structure, including a connecting plate body 1. A first groove 2 is provided directly to the left of the connecting plate body 1, a second groove 3 is provided directly to the right of the connecting plate body 1, a third groove 4 is provided in the middle of the connecting plate body 1, a fourth groove 5 is provided directly above the connecting plate body 1. An arc starting support rod 6 is installed in the third groove 4, a first limiting plate 7 is installed directly in front of the arc starting support rod 6, a second limiting plate 8 is installed directly behind the first limiting plate 7, and a gasket 9 is installed directly behind the second limiting plate 8. By providing multiple grooves on the connecting plate body 1 and installing components such as the arc starting support rod 6, limiting plates, and gasket 9, the purpose of making the structure more stable, facilitating installation and adjustment is achieved, and the good effects of improving the voltage equalizing arc starting effect and enhancing the reliability of the equipment are realized.

[0022] A first nut 10 is installed directly behind the gasket 9, and a second nut 11 is installed directly behind the first nut 10. By sequentially installing the gasket 9, the first nut 10, and the second nut 11 behind the second limiting plate 8, the purpose of firmly fixing the relevant components is achieved, realizing the enhancement of structural stability, preventing component loosening, and thus ensuring the reliable operation of the adjustable equalizing arc striking structure.

[0023] A fixator 12 is installed directly in front of the arc striking support rod 6. A fifth groove 13 is provided in the exact middle of the fixator 12. An arc attracting angle 14 is installed inside the fifth groove 13. A third nut 15 is installed directly above the fifth groove 13. By installing the fixator 12 directly in front of the arc striking support rod 6, installing the arc attracting angle 14 in the fifth groove 13 in the exact middle of the fixator 12, and installing the third nut 15 directly above the fifth groove 13, the purpose of firmly installing the arc attracting angle 14 is achieved, realizing the effect of ensuring the stable position of the arc attracting angle 14 and improving the reliability of arc striking.

[0024] A fourth nut 16 is installed directly below the fifth groove 13, and a fifth nut 17 is installed directly below the fourth nut 16. By sequentially installing the fourth nut 16 and the fifth nut 17 directly below the fifth groove 13, the purpose of further strengthening the connection between the fixator 12 and the arc attracting angle 14 is achieved, realizing the enhancement of structural stability, preventing the arc attracting angle 14 from loosening and falling off, and ensuring the reliable operation of the adjustable equalizing arc striking structure.

[0025] A first cable 18 is installed inside the first groove 2. A sixth nut 19 is installed directly in front of the first groove 2, and a seventh nut 20 is installed directly behind the first groove 2. An insulator 21 is installed on the first cable 18. By installing the first cable 18 inside the first groove 2 of the connecting plate body 1, installing the sixth nut 19 and the seventh nut 20 directly in front of and behind the first groove 2 respectively, and installing the insulator 21 on the first cable 18 at the same time, the purpose of stably connecting the first cable 18 and ensuring the reliable connection between the cable and the connecting plate body 1 is achieved, realizing the improvement of the cable installation stability, enhancement of the insulation performance, and ensuring the safe and effective operation of the adjustable equalizing arc striking structure.

[0026] A second cable 22 is installed inside the second groove 3. An eighth nut 23 is installed directly in front of the second groove 3, and a ninth nut 24 is installed directly behind the second groove 3. An insulator 21 is installed on the second cable 22. By installing the second cable 22 inside the second groove 3 of the connecting plate body 1, installing the eighth nut 23 and the ninth nut 24 directly in front of and behind the second groove 3 respectively, and installing the insulator 21 on the second cable 22 at the same time, the purpose of stably connecting the second cable 22 and ensuring the firm connection between the cable and the connecting plate body 1 is achieved, realizing the improvement of the stability and reliability of the cable installation, enhancement of the insulation effect, and ensuring the safe and stable operation of the adjustable equalizing arc striking structure.

[0027] The utility model constructs a scientific and reasonable structural system by opening multiple grooves on the connecting plate body 1 and installing components such as arc-leading support rods 6, arc-attracting angles 14, limit plates, gaskets 9 and various nuts. Among them, the settings of the arc-leading support rods 6 and the arc-attracting angles 14 can guide the electric arc in a timely manner under specific circumstances, avoid excessive local voltage, thereby improving the electric field distribution and making the voltage distribution more uniform in different parts. The multiple grooves on the connecting plate body 1 and the precisely installed components cooperate with each other to further optimize the electric field environment, greatly improve the voltage equalization effect, reduce the risk of equipment damage that may be caused by uneven voltage, extend the service life of the equipment. For the connection part between the cable and the connecting plate body 1, the method of fixing with nuts and installing insulators 21 not only ensures the firmness and stability of the cable connection, but also greatly enhances the insulation performance. The insulator 21 can effectively prevent current leakage and abnormal voltage fluctuations, making the voltage transmission between the cable and the connecting plate body 1 more stable. At the same time, the fixing function of the nut ensures that the connection part will not loosen during long-term use, further guaranteeing the stability and reliability of voltage equalization, thus providing strong support for the safe operation of the entire system and fundamentally improving the overall voltage equalization effect.

[0028] The above are all the preferred embodiments of the utility model, and the protection scope of the utility model is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the utility model shall be covered within the protection scope of the utility model.

Claims

1. An adjustable voltage equalizing arc striking structure, comprising a connecting plate body (1), characterized in that: A first groove (2) is provided on the directly left side of the connecting plate body (1), a second groove (3) is provided on the directly right side of the connecting plate body (1), a third groove (4) is provided in the middle of the connecting plate body (1), an arc ignition support rod (6) is installed in the third groove (4), a first limiting plate (7) is installed in front of the arc ignition support rod (6), a second limiting plate (8) is installed behind the first limiting plate (7), a gasket (9) is installed behind the second limiting plate (8), and a first nut (10) is installed behind the gasket (9); A fixer (12) is installed in front of the arc ignition support rod (6), a fifth groove (13) is provided in the middle of the fixer (12), an arc attracting angle (14) is installed inside the fifth groove (13), and a third nut (15) is installed above the fifth groove (13).

2. The adjustable voltage equalizing arc striking structure according to claim 1, wherein: A second nut (11) is installed behind the first nut (10).

3. An adjustable voltage equalizing arc striking structure according to claim 1, characterized in that: A fourth nut (16) is installed below the fifth groove (13), and a fifth nut (17) is installed below the fourth nut (16).

4. An adjustable voltage equalizing arc starting structure according to claim 1, characterized in that: A first cable (18) is installed inside the first groove (2), a sixth nut (19) is installed in front of the first groove (2), a seventh nut (20) is installed behind the first groove (2), and an insulator (21) is installed on the first cable (18).

5. An adjustable voltage equalizing arc striking structure according to claim 1, characterized in that: A second cable (22) is installed inside the second groove (3), an eighth nut (23) is installed in front of the second groove (3), a ninth nut (24) is installed behind the second groove (3), and an insulator (21) is installed on the second cable (22).

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