Disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber

Abstract

The invention belongs to the field of the vacuum circuit breaker, which particularly relates to a disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber. The disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber comprises a conducting rod (1), a contact cup (5), an iron core (7) and an electrode (4) connected with the contact cup (5), wherein the contact cup (5) and the conducting rod (1) are fixedly adapted; the iron core (7) is arranged in the contact cup (5); the contact cup (5) is equally provided with even ring current side channels; the iron core (7) is equally provided with winding channels (6); a coil winding (8) is arranged in each winding channel (6), wherein the number of the winding channels (6) is 12-30, and the width of the winding channel (6) is 2.5-3mm; and the coil windings (8) are distributed in a radiating mode to form a disk-type structure along the radial direction. In the disk-type gyromagnet longitudinal-blowing vacuum arc extinguish chamber, according to the brute force action of a rotary magnetic field and the action of a longitudinal magnetic field, the arc voltage can be lowered to drive the arc columns to be evenly distributed on an anode surface, the arc energy is accelerated to release, and the cut-off capability of the vacuum circuit breaker is improved.

Description

technical field [0001] The invention belongs to the field of vacuum circuit breakers, and in particular relates to the structure of a disc type rotary magnetic vertical 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. Vacuum circuit breaker is an indoor power distribution device in 3-10kV, 50Hz three-phase AC system, which can be used for protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations, especially suitable for oil-free, less In places where maintenance and frequent operations are used, circuit breakers can be configured in central cabinets, double-layer cabinets, and fixed cabinets to contr...

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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