Rapid response permanent magnet control mechanism

Abstract

The invention discloses a fast response permanent magnetic operating mechanism used for switch operation, which comprises a magnetic yoke (1), a movable core (2) and a push rod (10), wherein, the top of the movable core (2) is provided with the push rod (10); the movable core (2) is arranged in the magnetic yoke (1) which is internally provided with a switch-off coil (3), a closing coil (4), a switch-off starting coil (5), a closing starting coil (6), an annular permanent magnet (7), an upper buffer cushion (8), a lower buffer cushion (9), an upper insulation layer (11) and a lower insulation layer (12). The switch-off and closing coils are used for providing electromagnetic attraction for the movable core during switch-off and closing processes of the switch so as to offset the attraction of the annular permanent magnet to the movable core; and the switch-off and closing starting coils are used for providing electromagnetic attraction for the movable core at the initial stage of switch-off and closing of the switch so as to offset the attraction of the annular permanent magnet to the movable core. The annular permanent magnet is used for providing switch-off and closing power and keeping a movable contact of the switch to be in the switch-off and closing position. The magnetic yoke is used for providing a magnetic circuit; the movable core is used for driving the moving part of the switch to move; and the buffer cushions is used for absorbing the impact of vibration.

Description

technical field [0001] The invention is primary equipment of a power system, which belongs to an accessory of a switchgear, and is a driving device for providing power for a switch to open and close. The invention particularly relates to a quick-response permanent magnet operating mechanism. Background technique [0002] The permanent magnet operating mechanism is a successful example in the process of digitization of the operating mechanism, but further research is needed to expand the permanent magnet mechanism to the high-voltage field: [0003] (1) In order to obtain a larger electromagnetic force, the number of initial ampere-turns must be increased, which is contrary to the safety and reliability of the equipment. In particular, it is easy to cause the coil to burn out, and there are also considerable requirements for the parameters of the coil. [0004] (2) It is difficult for the load characteristic curve to be consistent with the electromagnetic attraction driving ...

AI Technical Summary

Problems solved by technology

[0003] (1) In order to obtain a larger electromagnetic force, the number of starting ampere-turns must be increased, which is contrary to the safety and reliability of the equipment

In particular, it is easy to cause the coil to burn out, and there are also considerable requirements for the parameters of the coil

[0004] (2) The load characteristic curve is difficult to be consistent with the electromagnetic attraction drive curve

[0005] (3) The reliability of the existing permanent magnet operating mechanism is difficult to guarantee

But so far, no permanent magnet switch control device with high reliability, low requirements for power supply, and fast control speed has been developed at home and abroad.

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