Adjustable rotating magnetic field vacuum explosion chamber

Abstract

The invention provides an adjustable rotating magnetic field vacuum explosion chamber. The adjustable rotating magnetic field vacuum explosion chamber comprises a pair of conductive rods, a shielding cover, a pair of disk shaped contacts, an insulation casing, a rotating magnetic field generation device and an amplitude and frequency adjustment device, wherein the insulation casing is arranged at an outer side of the shielding cover, the rotating magnetic field generation device is fixed outside the insulation casing, the rotating magnetic field generation device and the disk shaped contacts are coaxially arranged, the amplitude and frequency adjustment device is connected with the rotating magnetic field generation device, a magnetic field generated by the rotating magnetic field generation device is adjusted, the conductive rod is connected with the disk shaped contacts, and the disk shaped contacts are coaxially and oppositely arranged in the shielding cover. The adjustable rotating magnetic field vacuum explosion chamber is advantaged in that the rotating magnetic field generation device is completely disposed outside the insulation casing of the explosion chamber, gas generation possibility is avoided, the generated transverse magnetic field is more concentrated between the contacts, namely the arc portion, and closing and opening of the contacts are further facilitated.

Description

technical field [0001] The invention relates to a vacuum interrupter, in particular to an adjustable rotating magnetic field vacuum interrupter. Background technique [0002] With the continuous expansion of the grid capacity and the continuous improvement of the voltage level, the switchgear for the control and protection of the power system is faced with more severe working conditions and more stringent requirements. The vacuum switch uses high vacuum as the arc extinguishing and insulating medium. The contact and arc extinguishing system are simple, with high insulation level, easy maintenance, long electrical life, suitable for frequent operation, small size, light weight and other advantages. leading position. [0003] There are four commonly used contact structures for vacuum circuit breakers. They are disc-shaped flat-plate butt contact, spiral-type transverse magnetic contact, coil-type longitudinal magnetic contact, and cup-shaped longitudinal magnetic contact. ...

AI Technical Summary

Problems solved by technology

[0008] Therefore, in order to overcome the defect that the electrical life of the vacuum circuit breaker is reduced due to the uneven ablation of the contacts by the arc, the present invention provides an adjustable rotating magnetic field vacuum interrupter, including: a pair of conductive rods, a shielding cover, a For disc-shaped contacts, insulating shells, rotating magnetic field generating devices and amplitude-frequency adjusting devices;

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