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Vacuum switch tube for SF6 vacuum contactor

A technology of vacuum switching tube and vacuum contactor, which is applied in the electrical field and can solve the problems of air leakage manufacturing cost and low vacuum insulation strength

Inactive Publication Date: 2018-09-21
苏州华瑞达科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The object of the present invention is to provide a kind of SF 6 A vacuum switch tube for vacuum contactors, which solves the shortcomings of low vacuum insulation strength, air leakage and high manufacturing cost of existing vacuum contactors

Method used

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  • Vacuum switch tube for SF6 vacuum contactor
  • Vacuum switch tube for SF6 vacuum contactor
  • Vacuum switch tube for SF6 vacuum contactor

Examples

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specific Embodiment example 1

[0018] Such as figure 1 Shown is the SF of the present invention 6 Schematic diagram of the structure of a vacuum switch tube for a vacuum contactor, a SF 6 A vacuum switch tube for a vacuum contactor, which includes a porcelain cylinder 4, a protective cover 9 and a shielding cylinder 12, the protective cover 9 is contained inside the shielding cylinder 12, and a moving conductive rod 1 is provided at the axial center of both ends of the porcelain cylinder 4 And the static conductive rod 6, the end of the movable conductive rod 1 is welded with the movable contact 10, the upper end of the movable conductive rod 1 is sequentially set with a guide sleeve 7 and a movable end cover 3, and the upper part of the outer end of the guide sleeve 7 The package has a fixed ring 2. The lower end of the fixed ring 2 is located between the guide sleeve 7 and the movable end cover 3. A bellows 8 is provided between the movable end cover 3 and the protective cover 9. The bellows 8 is set on ...

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Abstract

The invention provides a vacuum switch tube for an SF6 vacuum contactor. The vacuum switch tube comprises a porcelain cylinder, magnetic blowout pieces, a protection cover and a shielding cylinder. The protection cover is arranged in the shielding cylinder; the magnetic blowout pieces are arranged at the two sides of the inner wall of the shielding cylinder; the two ends of the porcelain cylinderare provided with a dynamic conductive rod and a static conductive rod at the axis position respectively; a moving contact is welded to the end head of the dynamic conductive rod; a fixed contact is welded to the end head of the static conductive rod; and the moving contact and the fixed contact are fully contained in the protection cover. Based on excellent arc extinguishing performance, insulation performance and good chemical stability of SF6 gas, good airtightness of the vacuum switch tube and effective arc strike capability of the magnetic blowout pieces, withstand voltage strength in thetube is high, vacuum insulation strength is high and service life is long. The vacuum switch tube is simple in structure and convenient to use, and has the advantages of being capable of operating frequently, being small in noise, being free of fire danger and being small in electromechanical wear and the like.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a SF 6 Vacuum switch tube for vacuum contactor. Background technique [0002] The contactor is an electrical appliance used for long-distance and frequent switching on and off of the AC main circuit and large-capacity control circuit. The vacuum contactor is a contactor using a vacuum interrupter, which includes a vacuum interrupter part, an installation frame part and The electromagnetic operating mechanism is composed of three parts, and its overall structure adopts the form of a vacuum interrupter and an electromagnetic operating mechanism arranged up and down. The vacuum interrupter is the core component of the contactor. Through the arc extinguishing of the vacuum interrupter, it can achieve the function of reliable arc extinguishing through normal current and frequent cut-off of working current. [0003] The outer shell of the vacuum interrupter is made of insulating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/662H01H33/664
CPCH01H33/66207H01H33/664H01H2033/66215H01H2033/66223
Inventor 张天琦
Owner 苏州华瑞达科技有限公司
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