Protection Structure and Working Method of Bellows in Vacuum Interrupter under High Gas Pressure

A vacuum interrupter and gas pressure technology, which is applied in high-voltage air circuit breakers, high-voltage/high-current switches, electrical components, etc., can solve complex structures, increased production costs and maintenance costs, and no protection of vacuum interrupter bellows and other problems, to achieve the effect of increasing mechanical life and stable and reliable opening and closing operation

Active Publication Date: 2022-04-05
XI AN JIAOTONG UNIV
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Problems solved by technology

The structure of this patent is complicated, and the sliding seal is used between the connecting cylinder and the moving end conductor, which puts forward higher requirements for its structure and materials, and the manufacturing cost and maintenance cost of this structure will greatly increase
However, there are no research results related to the use of a simple and stable multi-stage gas chamber structure to protect the bellows of the vacuum interrupter.

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  • Protection Structure and Working Method of Bellows in Vacuum Interrupter under High Gas Pressure

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the following in conjunction with the attached figure 1 , the present invention will be described in further detail. The specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] The present invention proposes a protective structure for the bellows of the vacuum interrupter under high gas pressure, which includes a conductive seat 11 located below the vacuum interrupter 4, a fixed screw 6 fixed to the moving end cover plate of the vacuum interrupter 4, and two ends Weld respectively the static corrugated pipe 9 of the upper end connection flange 7 and the lower end connection flange 10, the inner O-ring 12 of the conductive seat located in the inner sealing groove of the conductive seat 11, and the conductive wire in the sealing groove between the conductive seat 11 and the movable conductive rod 1. The ...

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Abstract

The invention discloses a protection structure and working method of a bellows of a vacuum interrupter under high gas pressure. Ring, conductive spring, static bellows and connecting flanges welded to the upper and lower ends of the static bellows; the present invention transforms the structure of the bellows of the tank-type fast vacuum circuit breaker from the arc extinguishing chamber to bear the gas pressure through the setting of the sealing structure of the static bellows It is a two-stage air chamber structure, which ensures that the pressure difference of the insulating gas on both sides of the bellows of the interrupter is reduced to an atmospheric pressure difference, which can effectively improve the mechanical life of the bellows of the vacuum interrupter.

Description

technical field [0001] The invention belongs to the technical field of vacuum interrupters, in particular to a protection structure and working method of a bellows in a vacuum interrupter under high gas pressure, which is suitable for the protection of bellows in a vacuum interrupter under high gas pressure in vacuum switchgear . Background technique [0002] High-voltage vacuum circuit breaker is one of the important switchgears in power system. It has become a research hotspot at home and abroad due to its small size, simple structure, and environment-friendly arc extinguishing medium. At present, the external insulation of tank-type rapid vacuum circuit breakers under high-voltage levels is usually realized by high-pressure gas, such as sulfur hexafluoride, dry air, etc. The bellows is used as a sealing part in the vacuum interrupter. Usually, the two ends are respectively connected with the outside of the moving conductive rod and the inner opening of the moving end cov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/662H01H33/664
CPCH01H33/664H01H33/66207H01H33/66238
Inventor 姚晓飞刘志远范俊管臣王建华耿英三
Owner XI AN JIAOTONG UNIV
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