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A permanent magnet contactor arc extinguishing device

An arc extinguishing device and contactor technology, applied in electromagnetic relays, electromagnetic relay details, relays, etc., can solve the problems of increasing the contactor volume and production cost, and achieve the improvement of arc extinguishing efficiency, production cost saving, and volume reduction. Effect

Inactive Publication Date: 2017-10-27
SHANGHAI DIANJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Insulated grid arc extinguishing, quartz sand arc extinguishing, vacuum arc extinguishing, etc. all have their disadvantages, mainly because they will increase the volume and production cost of the contactor

Method used

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  • A permanent magnet contactor arc extinguishing device
  • A permanent magnet contactor arc extinguishing device

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Embodiment Construction

[0020] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0021] The invention uses an electromagnetic operating mechanism to control the movement of the alumina ceramic sheet, and at the same time indirectly controls the separation and closing of the dynamic and static contacts; uses the alumina ceramic sheet to block the generation of arcs between the contacts; uses permanent magnets as the driving force when the dynamic and static contacts are closed source.

[0022] figure 1 and figure 2 It schematically shows different side structural views of the permanent magnet contactor arc extinguishing device according to the preferred embodiment of the present invention.

[0023] Such as figure 1 and figure 2 As shown, the permanent magnet contactor arc extinguishing device according to the preferred ...

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Abstract

The invention provides a permanent-magnet contactor arc extinguishing device comprising vertical columns, rollers, a guide rail, an alumina ceramic piece, a ceramic piece fixing device, an electromagnetic operating mechanism, second permanent magnets, a moving contact, a static contact, and insulators. The ceramic piece fixing device connects the alumina ceramic piece to the electromagnetic operating mechanism which is used to control movement of the alumina ceramic piece. The alumina ceramic piece moves along the guide rails, and the alumina ceramic piece is arranged between the moving contact and the static contact. One vertical column is fixed at each of the two sides of the alumina ceramic piece. The upper surface of the alumina ceramic piece is equipped with the two fixed rollers. When the rollers move to below the moving contact, the height by which the moving contact is lifted is greater than the thickness of the alumina ceramic piece, so that friction between the alumina ceramic piece and the moving contact is prevented. The insulators are fixed on the static contact, and the second permanent magnets are fixed on the insulators. The second permanent magnets are disposed below the moving contact and spaced from the moving contact.

Description

technical field [0001] The invention relates to the field of arc extinguishing of contactors, and more specifically, the invention relates to an arc extinguishing device of a permanent magnet contactor. Background technique [0002] Contactors can be divided into DC contactors and AC contactors according to the on-off current of the main circuit. The process of breaking the arc of the contactor is the process of the moving contact and static contact of the contactor from the closed state to the open state. At this time, a discharge phenomenon will occur between the moving contact and the static contact. If the current generated at this time is very large, an arc will be generated between the moving contact and the static contact. This creates the problem of arc extinguishing. [0003] At present, the main arc extinguishing devices are: simple breaking, magnetic blowing arc extinguishing, longitudinal slot arc extinguishing, insulating grid arc extinguishing, quartz sand a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H9/34H01H50/60
CPCH01H9/34H01H50/60
Inventor 刘红松迟长春籍海亮李化影
Owner SHANGHAI DIANJI UNIV
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