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High-speed switching-off vacuum switch

A vacuum switch, high-speed technology, applied in the direction of high-voltage/high-current switches, electric switches, high-voltage air circuit breakers, etc., can solve the problems of opening force lag, etc., and achieve the goals of increasing acceleration, reducing opening time, and advancing opening time Effect

Inactive Publication Date: 2016-05-25
CHINA XD ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the structure involved in CN200810150067.8 performs the opening operation, the opening force at the initial stage of opening is relatively delayed at the opening moment due to the buffering of the contact spring.

Method used

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  • High-speed switching-off vacuum switch
  • High-speed switching-off vacuum switch
  • High-speed switching-off vacuum switch

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Embodiment Construction

[0015] The present invention is described in further detail below in conjunction with accompanying drawing:

[0016] refer to figure 1 , the high-speed opening vacuum switch of the present invention is mainly composed of a vacuum switch interrupter 1, an insulating operating rod 2, a repulsion operating mechanism 3 (the repulsion operating mechanism 3 includes two parts of a repulsion coil 3.1 and a repulsion disk 3.2), a closing holding contact Spring 5, permanent magnet mechanism 6, upper drive link 7 and lower drive link 8 form. In the case of a short-circuit current, the repulsion coil 3 is energized through the outer circuit, so that the repulsion operating mechanism 3 acts to achieve the purpose of fast switching (the charging of the coil causes eddy currents to be generated in the repulsion disk, thereby generating in a short time between the repulsion disk and the coil. A very large repulsive force, which makes the repulsive force disk drive the drive link to move qui...

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Abstract

The invention provides a high-speed switching-off vacuum switch. The high-speed switching-off vacuum switch is mainly composed of a vacuum switch arc extinguishing chamber, an insulated operation rod, a repulsion operating mechanism (comprising a repulsion coil and a repulsion plate), a switching-on maintaining contact spring, a permanent magnetic mechanism, and upper and lower drive connecting rods. The high-speed switching-off vacuum switch achieves rapid switching off by means of the repulsion operating mechanism, and performs conventional switching off and switching on by means of the permanent magnetic mechanism. Compared with a vacuum switch of an ordinary structure, the repulsion operating mechanism is placed between the vacuum switch arc extinguishing chamber and the switching-on maintaining contact spring, so as to achieve the purposes of shortening motion response time, improving initial-stage contact acceleration, increasing switching off speed rapidly, and further shortening switching off time of the high-speed switching-off vacuum switch.

Description

【Technical field】 [0001] The invention relates to the field of high-voltage switches, in particular to a high-speed opening vacuum switch. 【Background technique】 [0002] With the development of the power system, the power system has higher and higher requirements for power switches. At present, the operating mechanisms of vacuum circuit breakers mainly include electromagnetic operating mechanisms, spring operating mechanisms, and permanent magnetic operating mechanisms. [0003] Electromagnetic operating mechanism is the most commonly used type of operating mechanism for vacuum circuit breakers. It has the advantages of simple structure, few parts, reliable operation and low manufacturing cost. At the same time, the output characteristics of the solenoid electromagnet can easily meet the requirements of the closing reaction force characteristics of the vacuum circuit breaker. Its disadvantage is that the power consumed by the closing coil is too large, so it is required t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/666
CPCH01H33/666
Inventor 潘峰黎小林陈名李欣颜莉萍刘景博
Owner CHINA XD ELECTRIC CO LTD
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