Gas generator of high-voltage switch actuating mechanism

Abstract

The invention relates to a gas generator of a high-voltage switch actuating mechanism. The generator comprises a shell, a base is fixed to the top of the shell, an electric detonator is arranged in the center of the base, the electric detonator is pressed and fixed on the base through a fixing cover, a medicine cup is arranged below the base, first exhaust holes are evenly distributed in the bottom of the medicine cup along the circumference, an end cover is fixed at the bottom of the shell, a second exhaust hole is formed in the center of the end cover, a mounting base is arranged on the outer side of the shell, the mounting seat is provided with an external thread, a first positioning boss is arranged in the center of the medicine cup, an ignition tube is mounted on the first positioningboss, fire transfer holes are evenly distributed in the side wall of the ignition tube, a pressure relief hole is formed in the center of the first positioning boss, and a sealing foil is attached tothe end, close to the ignition tube, of the pressure relief hole. The gas generator has the advantages of being free of maintenance, reliable in work and high in response speed.

Description

technical field [0001] The invention relates to the technical field of high-voltage and ultra-high-voltage power transmission and transformation switches, in particular to a gas generator of a high-voltage switch actuating mechanism. Background technique [0002] High-voltage and extra-high-voltage switchgear are widely used in high-voltage or extra-high-voltage power transmission and transformation systems such as power plants, national grids, urban power grids, large industrial and mining enterprises, railway electrics, and rural power supplies. In the early days of high-voltage or ultra-high-voltage switches with a voltage level of 220kV and above, the power source of the actuating mechanism was mainly a hydraulic disc spring mechanism, and the motor was used to slowly compress and store energy. Moreover, the energy storage is slow, the structure is complicated, and the maintenance is difficult. [0003] In view of the shortcomings of the above-mentioned high-voltage swi...

AI Technical Summary

Problems solved by technology

In the early days of high-voltage or ultra-high-voltage switches with a voltage level of 220kV and above, the power source of the actuating mechanism was mainly a hydraulic disc spring mechanism, and the motor was used to slowly compress and store energy. And the energy storage is slow, the structure is complicated, and the maintenance is difficult

[0003] In view of the shortcomings of the above-mentioned high-voltage switch actuators, such as slow energy storage, complex structure, and difficult maintenance, Chinese patent 201210405352.6 discloses a gas-fired direct-force high-pressure switch actuator, which mainly includes a cavity, a top cover, a piston rod, Closing gas generator and opening gas generator; the operating mechanism realizes two-way movement and multiple movements of the operating mechanism by installing gas generators in two directions, and finally realizes multiple opening and closing of the high-voltage switch

Images