Permanent magnet operating mechanism and method with short-time closing function by using repulsion mechanism

Abstract

The invention discloses a permanent magnet operating mechanism using a repulsive mechanism and having a short-time closing function and a method. The permanent magnet operating mechanism comprises a repulsive driving mechanism (17), a first non-magnetic-conducting material cushion block (7), a second non-magnetic-conducting material cushion block (11), a magnetic circuit separation permanent magnet operating mechanism (18) and a guide rod (1), wherein the repulsive driving mechanism (17), the first non-magnetic-conducting material cushion block (7), the second non-magnetic-conducting materialcushion block (11) and the magnetic circuit separation permanent magnet operating mechanism (18) are arranged inside a non-magnetic-conducting shell (2), and the guide rod (1) penetrates through the non-magnetic-conducting shell (2) and is slidably connected with the non-magnetic-conducting shell (2). In the permanent magnet operating mechanism, the repulsive driving mechanism (17) is additionallyarranged, and the three command modes of closing, opening and short-time closing are provided. A traditional way is adopted for the opening and closing operation, a new way is adopted for the short-time closing operation, and the repulsive driving mechanism (17) is arranged to assist in the operation, so that the closing holding time is greatly shortened, the initial speed in the opening stage inthe short-time closing operation is increased, the opening acting time of the mechanism is shortened, and the effect of short-time closing is achieved finally.

Description

technical field [0001] The invention relates to a permanent magnet operating mechanism with a short-time closing function by using a repulsion mechanism, belonging to the field of medium-voltage vacuum circuit breakers. Background technique [0002] With the advantages of small size, light weight, suitable for frequent operation, and no maintenance for arc extinguishing, vacuum circuit breakers quickly occupied the medium-voltage circuit breaker market and further developed into the high-voltage field. The operating mechanism of the vacuum circuit breaker usually has three types: electromagnetic type, spring type and permanent magnet type. Among them, the permanent magnet operating mechanism has attracted people's attention increasingly due to its advantages of high reliability, low energy consumption, maintenance-free, and synchronous operation. With the introduction of the tentative reclosing operation, there is a strong demand for an operating mechanism that is used to q...

AI Technical Summary

Problems solved by technology

With the introduction of the tentative reclosing operation, there is a strong demand for an operating mechanism that is used to quickly open the brake immediately after closing, that is, in the case of short-term closing, but the opening speed of the traditional operating mechanism is slow, and only The two operating commands of closing and opening cannot meet the requirements, and a new type of operating mechanism needs further research

Images