Arc extinguishing chamber contact spring assembly for 12kV high-voltage ring main unit

Abstract

The present invention provides an arc extinguishing chamber contact spring assembly for a 12kV high-voltage ring main unit, which successively comprises the components of: a rod end joint bearing, a contact spring seat, a contact spring seat connecting block, the other contact spring seat, an insulating pull bar, and an insulating pull bar insert. One end of the rod end joint bearing and one end of the contact spring seat connecting block are respectively connected with two sides of the contact spring seat. The other end of the contact spring seat connecting block successively penetrates through the other contact spring seat and a fastening lock and then is inserted into one end of the insulating pull bar. One end of the insulating pull bar insert is connected with the other end of the insulating pull rod. The contact spring seat is also provided with a shaft shoulder. A contact spring is sleeved between the shaft shoulder of the contact spring seat and the locking nut. The arc extinguishing chamber contact spring assembly of the invention has the advantages of: simple mounting, flexible adjustment, low manufacturing cost and high assembling consistency. Particularly the arc extinguishing chamber contact spring assembly has a small size and is particularly suitable to be used in a miniature circuit breaker solid-insulation-embedded pole.

Description

technical field [0001] The invention relates to a contact spring assembly of an arc extinguishing chamber for a 12kV high-voltage ring network cabinet. Background technique [0002] In high-voltage vacuum circuit breakers or load switches, in order to prevent the dynamic and static contacts from generating electromotive force to open the high-voltage switch due to excessive current, there must be a certain contact pressure between the dynamic and static contacts. Moreover, according to the capacity and breaking capacity of the high-voltage switch, its contact pressure is different. Therefore, the contact spring will be designed in the design of high-voltage switches. [0003] The main functions of the contact spring are as follows: 1. When closing, part of the elastic potential energy of the closing spring is converted into the kinetic energy of the moving contact of the high-voltage vacuum interrupter, part of it is lost by the friction force of the mechanism action, and m...

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to overcome the defects of complex structure, cumbersome assembly and inconvenient use of the contact spring assembly used in the high-voltage vacuum switchgear in the prior art, and to provide a simple installation, stable and reliable performance for 12kV high-voltage Interrupter contact spring assembly of ring main unit

Images