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Three-position isolation grounding switch and isolation static contact

A static contact and contact technology, which is applied in grounding switches, air switch parts, contact surface shape/structure, etc., can solve the problem of not easy to replace the strap contact fingers, reduce risks, and facilitate disassembly. the effect of

Pending Publication Date: 2022-06-21
HENAN PINGGAO ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an isolated static contact to solve the technical problem in the prior art that the contact fingers of the watch strap are not easy to replace after damage; the purpose of the present invention is also to provide a three-way Station isolation grounding switch

Method used

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  • Three-position isolation grounding switch and isolation static contact
  • Three-position isolation grounding switch and isolation static contact
  • Three-position isolation grounding switch and isolation static contact

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] like figure 1 As shown, the three-position isolating grounding switch includes a housing 11, and a movable support 12 extending in the vertical direction is arranged in the housing 11. The lower end of the movable support 12 is connected with a movable contact 14, and the upper end of the movable support 12 is connected Fixed on the top of the housing 11 . The housing is also provided with an isolation static contact 15 and a grounding static contact 13 .

[0055] like image 3 As shown, the isolated static contact 15 is fixed to other conductors in the housing 11 by the fifth screw 39 .

[0056] The direction in which the movable contact 14 is inserted into the isolation static contact 15 is defined as the left-right direction. like figure 2 , Figure 4 and Image 6 As shown, the isolation static contact 15 includes a front contact unit 43 and a rear contact unit 44, the front contact unit 43 includes a front vertical seat, and the rear contact unit 44 includes ...

Embodiment 2

[0074]The difference between this embodiment and Embodiment 1 is that, in Embodiment 1, the lower part of the groove bottom of the contact finger installation groove 46 is fitted with a limit pin 48 by interference, and the limit pin 48 constitutes a lower limit piece. In this embodiment, the lower part of the groove bottom of the contact finger installation groove is threadedly connected with a limit bolt, and the limit bolt constitutes a lower limit member. In other embodiments, based on the case where the lower limiting member is a limiting bolt, the upper limiting member on the left side may be designed as a limiting pin.

Embodiment 3

[0076] The difference between this embodiment and Embodiment 1 is that, in Embodiment 1, the lower part of the groove bottom of the contact finger installation groove 46 is fitted with a limit pin 48 by interference, and the limit pin 48 constitutes a lower limit piece. In this embodiment, the lower part of the groove bottom of the contact finger installation groove is protruded with a limit protrusion, and the limit protrusion constitutes a lower limit member.

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Abstract

The invention relates to a three-position isolation grounding switch and an isolation static contact. The isolation static contact comprises a front vertical seat and a rear vertical seat which are arranged at an interval in the front-back direction, contact finger installation grooves are formed in the opposite side faces of the two vertical seats respectively, watchband contact fingers are installed in the contact finger installation grooves, and lower limiting pieces are arranged at the positions, below the watchband contact fingers, of the groove bottoms of the contact finger installation grooves. An upper limiting piece is arranged at the position, above the watchband contact finger, of the groove bottom of the contact finger installation groove, the watchband contact finger is fixedly assembled in the contact finger installation groove through cooperation of the upper limiting piece and a lower limiting piece, and at least one of the upper limiting piece and the lower limiting piece is detachably connected to the corresponding vertical base. When the watchband contact finger needs to be replaced, the watchband contact finger can be pulled out only by detaching the limiting piece detachably connected to the vertical seat, so that the watchband contact finger is convenient to detach. Moreover, only the watchband contact finger is replaced, so that the replacement cost is reduced.

Description

technical field [0001] The invention relates to a three-station isolation grounding switch, in particular to an isolation static contact of the three-station isolation grounding switch. Background technique [0002] The renovation and expansion of old power grid transmission and substation stations use more and more HGIS switchgear. The three-position switch with isolation and grounding function is an important part of HGIS equipment, and the requirements for its related technical parameters are getting higher and higher. [0003] At present, the design of the three-position isolating grounding switch at home and abroad is mainly divided into two ways: linear motion and rotary motion of the moving contact. For example, the rotary blade isolation switch disclosed in the Chinese patent document with the authorization announcement number of CN109411263B includes a casing, a movable contact and an isolation static contact are arranged in the casing, and the side of the isolation...

Claims

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Application Information

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IPC IPC(8): H01H31/02H01H1/06
CPCH01H31/02H01H31/003H01H1/06
Inventor 刘英英杨光孙龙勇李付永李森然王福亚孟岩李晓刚高炳灿徐刚姚灿江叶方军徐坤福王明树芦珂佟志鹏吕飞飞
Owner HENAN PINGGAO ELECTRIC
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