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

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...

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