A Rotary Breaking Vacuum Circuit Breaker

Abstract

The invention relates to a vacuum circuit breaker, in particular to a rotary breaking vacuum circuit breaker. The utility model has the advantages of simple structure, integrated machine, long mechanical life, high operation reliability and modularization. It includes a vacuum bubble, a non-contact magnetic drive mechanism, a rotating electrode system and a main conductive circuit; it is characterized in that the non-contact magnetic drive mechanism includes a driving component located inside the vacuum bubble and a transmission component located outside the vacuum bubble; the The non-contact magnetic drive mechanism drives the rotating electrode system to realize closing, closing maintenance, opening and opening maintenance; the main conductive circuit is used to provide a channel for connecting the vacuum bubble with the external main circuit. The rotating electrode system includes a static electrode assembly and a rotating moving electrode assembly; the moving electrode of the rotating moving electrode assembly closes or opens with the static electrode of the static electrode assembly through relative movement; the relative movement is while linearly moving Rotational movement.

Description

technical field [0001] The invention relates to a vacuum circuit breaker, in particular to a rotary breaking vacuum circuit breaker. Background technique [0002] Vacuum circuit breakers play an important role in control and protection in power transmission and distribution systems, and are widely used, especially in the field of medium voltage. The traditional vacuum circuit breaker is composed of conductive and arc extinguishing system, bellows, drive insulator and operating mechanism. , drive the insulator, and the bellows drive the conductive rod to complete the closing and breaking actions of the vacuum circuit breaker. The arc extinguishing system and bellows of the traditional vacuum circuit breaker are in a high vacuum state in the vacuum bubble, while the drive insulators, pull rods and other transmission mechanisms are outside the vacuum bubble (non-vacuum state), with large volume and complex transmission structure. The main defects are: Vacuum bubble leaks, ope...

AI Technical Summary

Problems solved by technology

The arc extinguishing system and bellows of the traditional vacuum circuit breaker are in a high vacuum state in the vacuum bubble, while the drive insulators, pull rods and other transmission mechanisms are outside the vacuum bubble (non-vacuum state), with large volume and complex transmission structure. The main defects are: Leakage of vacuum bubbles, defect of operating mechanism, large movement dispersion, low reliability, etc.

The structure, material, and state of the bellows have always been the main factors leading to the decrease of the vacuum degree in the vacuum bubble. The main reason for the frequent defects of the operating mechanism is that there are many parts in the body and the complexity of the transmission mechanism.

At present, most of the products on the market are only changing the electrode material and structure, reducing the number of transmission parts between the operating mechanism and the arc extinguishing chamber, or optimizing the peripheral structure. No improvement in breaking performance

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