Arc extinguish chambers of high voltage alternating current SF6 pot-type breaker

Abstract

The invention discloses arc extinguish chambers of a high voltage alternating current SF6 pot-type breaker. The invention is characterized in that an arc extinguish chamber system comprises a shell with the arc extinguish chambers, plum blossom contact systems, fixed contact systems, capacitor assembling units, air cylinder systems, a mechanical drive system, ion capturing systems, compressed airpiston assembling units, intermediate contact assembling units, insulation supporting bars, moving end large shields and fixed end large shields; the arc extinguish chambers are of double-break structure and are symmetrically distributed, with the mechanical drive system as the center; the middle mechanical drive system moves along the vertical direction; and vertical movement of the mechanical drive system is transformed to horizontal movement through crankarms and connecting rods in the mechanical drive system to drive the two air cylinder systems of the arc extinguish chambers to move horizontally to switch off and switch on the switchgear. Through promoting the technology of the integral arc extinguish chamber of the breaker, the arc extinguish chambers have more uniform electrical field, high insulation level, stronger breaking capability and high current-carrying capability and is safer to operate.

Description

technical field

[0001] The invention relates to a power switchgear, which is mainly used for the control and protection of a power system, and more specifically relates to an arc extinguishing chamber of a high-voltage AC double-break SF6 circuit breaker with a voltage level of 363kV and above. Background technique

[0002] With the rapid development and improvement of the national grid construction, the power system has higher and higher requirements for the reliability and stability of the switchgear. The traditional high-voltage AC double-break SF6 circuit breaker with a voltage level of 363kV and above can no longer meet the needs of power grid development. Therefore, it is necessary to optimize the entire electric field of the arc extinguishing chamber of the existing circuit breaker to make the overall electric field of the arc extinguishing chamber more stable. Uniform, more reasonable structural design, higher overall technical indicators of the product, and more rel...

Images