Current aging technical device for vacuum arc-extinguishing chamber

Abstract

The invention belongs to the technical field of electric parameter test of electric vacuum devices and particularly relates to a current aging technical device for a vacuum arc-extinguishing chamber. The current aging technical device consists of a stander, an opening and closing speed adjustment mechanism, a pneumatic reversing valve, a connection screw, the vacuum arc-extinguishing chamber, a direct current source, a power polarity conversion switch and a control system, wherein the respective parts of the device are fixed on the stander. The technical device is mainly characterized in that the control system controls a high-current direct current power supply to work and applies technically set rated current to two ends of the vacuum arc-extinguishing chamber; an electric arc which is generated transiently can burn out and remove glitches to implement one-time aging; the control system controls the pneumatic reversing valve to move in an opposite direction to drive a movable conductive rod in the vacuum arc-extinguishing chamber to do closing operation and then changes the polarities of power supplies applied to the two ends of the vacuum arc-extinguishing chamber after the aging is executed for technically set times; the opening and closing speed adjustment mechanism controls the opening speed and the closing speed of the vacuum arc-extinguishing chamber and the electric arc duration time by adjusting the gas pressure of the pneumatic reversing valve to meet technical requirements of different products.

Description

technical field [0001] The invention belongs to the technical field of electric parameter testing of electric vacuum devices, and relates to a process device for testing electric parameters of a vacuum interrupter, which is a process device especially suitable for current aging of a vacuum interrupter. Background technique [0002] There are many factors that affect the performance and quality of vacuum interrupter products. From the perspective of production technology, the degree of vacuum is mainly guaranteed by the link of brazing and sealing. In terms of parts quality, it mainly manufactures three key parts of the interrupter: contacts, bellows and metallized ceramics. Brazing Due to the use of large-scale high-vacuum brazing equipment made of imported components and the one-time sealing and discharging process, this important link has been able to guarantee the performance and quality of the product. Therefore, the quality level of the key parts will directly affect t...

AI Technical Summary

Problems solved by technology

The current aging device of the traditional vacuum interrupter is manually operated, relying on the experience of the operator to control the opening speed to maintain the duration of the arc, and it is necessary to manually calculate the number of times of current aging, which cannot accurately guarantee the duration of the arc. Current Aging Process Requirements

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