Disc-type gyromagnetic transverse blowing vacuum arc extinguish chamber

Abstract

The invention belongs to a vacuum circuit breaker field and especially relates to a disc-type gyromagnetic transverse blowing vacuum arc extinguish chamber. The vacuum arc extinguish chamber comprises: a conducting rod (1), a contact cup bottom (2), an iron core (7) and a contact cup (3). The contact cup bottom (2), the contact cup (3) and the conducting rod (1) are successively matched. The contact cup (3) is provided with circulating tanks with equal intervals. A deflection angle of the circulating tanks and a longitudinal axis of the conducting rod (1) is 15-35 DEG. The iron core (7) is placed in the contact cup (3). The iron core (7) is provided with winding slots (6) with equal intervals. Coil windings (8), which are distributed along a radial direction and are in a radiation shape, form a disc structure. A contact blade is fixedly arranged on an end of the contact cup bottom (2). According to the invention, through a strong force of a rotating magnetic field and simultaneously under an effect of a vertical magnetic field, an arc voltage can be reduced; arc columns are impelled to be uniformly distributed on an anode surface; arc energy release can be accelerated; a breaking capacity of the vacuum circuit breaker can be increased.

Description

technical field [0001] The invention belongs to the field of vacuum circuit breakers, in particular to a disc-type gyromagnetic transverse blowing vacuum interrupter. Background technique [0002] Vacuum circuit breaker is named for its arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no maintenance for arc extinguishing. The application is more popular. In 1893, Rittenhouse in the United States proposed a vacuum interrupter with a simple structure and obtained a design patent. In 1920, the Swedish Foga Company made a vacuum switch for the first time. In 1926, the research results published by Sorensen in the United States also showed the possibility of breaking current in vacuum, but due to the small breaking capacity and the limitation of the development level of vacuum technology and vacuum materials, it has not yet b...

AI Technical Summary

Problems solved by technology

The Lorentz force generated by the interaction between the transverse magnetic field contact and the arc current makes the arc move in the circumferential direction, and the transverse magnetic field will bend and elongate the moving arc, which will increase the arc voltage and arc energy, resulting in limited breaking capacity , and the ablation degree of the contact is still stronger when the arc is concentrated than when the arc is diffused, the density of the remaining plasma in the arc gap is still high when the current crosses zero, and the re-ignition phenomenon will still occur when the recovery voltage is high

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