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Mechanical quick switch based on electromagnetic repulsion mechanism

A technology of fast switching and electromagnetic repulsion, applied in the field of switchgear, can solve the problems of reducing the opening speed of fast mechanical switches, rigid collision of electromagnetic repulsion mechanism, increasing opening time, etc., to achieve miniaturization and intensification, avoid bouncing, The effect of increasing the opening speed

Pending Publication Date: 2020-03-10
JIANGSU KAIFAN ELECTRICAL APPLIANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the electromagnetic repulsion mechanism can quickly reach the peak value of thrust within tens to hundreds of microseconds, which is much faster than the action time of the electromagnet, when the electromagnetic repulsion mechanism opens quickly, the repulsion disc drives the connecting rod to move downward. The electromagnet still provides the closing holding force, and the opening spring will produce a reverse force due to compression, which will reduce the opening speed of the fast mechanical switch, increase the opening time, and cause a gap between the electromagnetic repulsion mechanism and the closing holding mechanism. Rigid collision, causing bouncing phenomenon

Method used

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  • Mechanical quick switch based on electromagnetic repulsion mechanism
  • Mechanical quick switch based on electromagnetic repulsion mechanism
  • Mechanical quick switch based on electromagnetic repulsion mechanism

Examples

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Effect test

Embodiment 1

[0032] An embodiment of the present invention is a mechanical fast switch based on an electromagnetic repulsion mechanism. The structure of the mechanical fast switch based on the electromagnetic repulsion mechanism can be found in figure 1 .

[0033]The vacuum interrupter 1 is connected with the connecting rod 3 through the insulating rod 2 . The connecting rod 3 is equipped with an electromagnetic repulsion mechanism and a bistable state holding mechanism; the repulsion coil 4 and the repulsion disk 5 form an electromagnetic repulsion mechanism, and the repulsion disk 5 is fixedly connected with the connection rod 3 . The bistable state holding mechanism includes a bistable spring 7 and a connecting rod 6, one end of the connecting rod 6 is connected to the bistable spring 7, and the other end is connected to the connecting rod 3; when the connecting rod 3 moves upward or downward, the bistable spring 7 keeps compressing state, the state of the connecting rod 3 is exerted ...

Embodiment 2

[0043] Another embodiment of the present invention is a mechanical fast switch based on an electromagnetic repulsion mechanism. The structure of the mechanical fast switch based on the electromagnetic repulsion mechanism can be found in Image 6 . The operating mechanism adopts a monostable permanent magnet mechanism 15 . In this embodiment, only the monostable permanent magnet mechanism is used as an example, but it is not limited to the monostable permanent magnet mechanism, and it can also be other types of monostable operating mechanisms. As long as the monostable operating mechanism used can realize single The steady-state closing function is enough.

[0044] Under normal working conditions, the mechanical fast switch uses a monostable permanent magnet mechanism 15 to realize the closing operation of the mechanical fast switch, uses an electromagnetic repulsion mechanism to realize the normal opening operation of the mechanical fast switch, and uses a bistable holding m...

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Abstract

The invention discloses a mechanical quick switch based on an electromagnetic repulsion mechanism, and belongs to the technical field of switch cabinets. The mechanical quick switch comprises a connecting rod, a bistable holding mechanism, an operating mechanism and a set of electromagnetic repulsion mechanism, wherein the connecting rod moves under the driving of the electromagnetic repulsion mechanism or the operating mechanism so as to enable the mechanical quick switch to open; the connecting rod moves under the driving of the operating mechanism so as to enable the mechanical quick switchto close; during the opening or closing movement of the connecting rod, the bistable holding mechanism applies a holding force to the opening and closing state of the connecting rod; in the quick opening process, the electromagnetic repulsion mechanism and the operating mechanism are completely independent; and the electromagnetic repulsion mechanism and the operating mechanism can realize the opening operation. According to the invention, the miniaturization and intensification of a circuit breaker can be realized; the problem of rigid collision between the electromagnetic repulsion mechanism and the closing holding mechanism is solved; different opening operation modes can be adopted under the normal working condition and the fault working condition.

Description

technical field [0001] The invention belongs to the technical field of switch cabinets, and in particular relates to a mechanical fast switch based on an electromagnetic repulsion mechanism. Background technique [0002] In recent years, with the large-scale access of distributed power sources and energy storage devices, the rapid development of power electronics technology, and the growth of DC loads, DC power distribution has attracted more and more attention. Especially in some specific occasions, such as large-scale ship power supply system, urban rail transit power supply system and other DC systems have been greatly developed. With the continuous increase of DC system capacity and continuous improvement of voltage level, the indicators of short-circuit current peak value and breaking time of DC circuit breaker are also continuously improved. Although the traditional mechanical switch has the advantages of strong load capacity and stable conduction, the response speed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H51/27H01H50/64
CPCH01H51/27H01H50/64
Inventor 韩伟朱忠建衣陈晨唐建周海东
Owner JIANGSU KAIFAN ELECTRICAL APPLIANCES
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