Line-shaped series-connection small-gap dual-fracture vacuum arc-extinguishing chamber

Abstract

The invention discloses a line-shaped series-connection small-gap dual-fracture vacuum arc-extinguishing chamber which can effectively reduce cost and promote the voltage withstanding level, and is provided with an insulated shell. An insulated support is located on the inner side in the insulated shell in the vertical direction, a transverse separating sheet is arranged on the middle portion on the inner side of the insulated support, fixed contacts protruding upward are symmetrically arranged on the upper and lower faces of the transverse separating sheet, and a shielding case is further connected on the inner side of the insulated support. An upper guide sleeve and an upper electric conductive rod arranged in the upper guide sleeve are arranged on the upper portion of the insulated shell, an upper moving contact is arranged at the lower end of the upper electric conductive rod, and is located above the fixed contacts. A lower guide sleeve and a lower electric conductive rod arranged in the lower guide sleeve are arranged on the lower portion of the insulated shell, and a lower moving contact is arranged at the upper end of the lower moving electric conductive rod and is located below the fixed contacts.

Description

technical field [0001] The invention relates to a vacuum interrupter used for a vacuum switch such as a vacuum circuit breaker, in particular to an inline series short-gap double-break vacuum interrupter which can effectively reduce the cost and improve the withstand voltage level. Background technique [0002] The vacuum interrupter uses a vacuum circuit breaker as the arc extinguishing and insulating medium, which has the advantages of strong arc extinguishing ability, small size, light weight, long service life, no risk of fire and explosion, and no environmental pollution. The existing vacuum circuit breaker is basically a vacuum circuit breaker with a single-break interrupter. The structure of the single-break interrupter is an insulating shell. The lower part of the insulating shell is placed in the guide sleeve and the upper end is located in the vacuum interrupter. The moving conductive rod is connected to the lower terminal through the wire ring, the upper end of th...

AI Technical Summary

Problems solved by technology

If we want to promote the application of vacuum interrupters to ultra-high voltage and ultra-high voltage fields, we can only adopt a series connection of multiple vacuum circuit breakers with single-break interrupters, and there are many vacuum interrupters in series. It is more complicated, which increases the cost of the product, and the increase in connections also affects the reliability of the whole machine

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