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Contact for high-speed mechanical switch and fracture structure

A mechanical switch and contact technology, applied in high-voltage/high-current switches, electrical switches, high-voltage air circuit breakers, etc., can solve the problems of short service life, poor closing reliability, and high production costs, reducing production costs and ensuring Insulation properties, effect of reducing output force requirements

Active Publication Date: 2020-10-30
PINGGAO GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a contact for high-speed mechanical switches, which can solve the problem of the contact between the dynamic and static contacts in the prior art. The problems of poor closing reliability, short service life and high production cost;

Method used

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  • Contact for high-speed mechanical switch and fracture structure
  • Contact for high-speed mechanical switch and fracture structure
  • Contact for high-speed mechanical switch and fracture structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1 of the fracture structure of the present invention: the fracture structure in the present invention is assembled in a high-speed mechanical switch, such as figure 1 and figure 2 As shown, the high-speed mechanical switch mainly includes a fracture structure 10, an operating mechanism 20 that drives the fracture structure 10 to move, and a holding mechanism 30 that keeps the fracture structure 10 at the designed opening and closing positions. Each part of the high-speed mechanical switch is introduced in detail.

[0062] High-speed mechanical switches include along figure 1 and figure 2 The insulating cylinder 11 extending in the upper and lower directions, the outer peripheral surface of the insulating cylinder 11 is provided with an insulating shed 111, the fracture structure 10 is arranged in the inner cavity of the insulating cylinder 11, and the fracture structure 10 includes a moving contact 16 and a static contact Head 15. The openings at both e...

Embodiment 2

[0081] Embodiment 2 of the breakout structure of the present invention: the difference from the above embodiments is that in this embodiment, the elastic contact fingers are arranged on the movable contact, that is, the contact end is arranged on the butt end of the movable contact facing the static contact. Finger installation groove, the elastic contact finger is arranged in the contact finger installation groove, when the moving contact moves towards the static contact, the elastic contact finger on the moving contact contacts the static contact before the moving contact, and buffers through its own elastic deformation Impact between moving and static contacts. Or in other embodiments, coaxially arranged spring contact fingers are arranged on the end faces of the movable contact and the static contact, wherein the radial dimension of one spring contact finger is larger than that of the other spring contact finger, so that the dynamic and static contact When the heads are do...

Embodiment 3

[0082] Embodiment 3 of the interruption structure of the present invention: the difference from the above-mentioned embodiment is that in this embodiment, the elastic contact finger can adopt a bow-shaped shrapnel structure, and the two ends of the shrapnel structure are fixed to the butt end of one of the contacts. The arched part is in contact with the matching contact, and the shrapnel structure can realize the elastic contact between the two contacts through its own deformation, and is not limited to the use of spring contact fingers as elastic contact fingers.

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Abstract

The invention relates to a contact for a high-speed mechanical switch and a fracture structure, which can solve the problems of poor closing reliability, short service life and high production cost caused by end surface contact conduction of a moving contact and a static contact in the prior art. The contact for the high-speed mechanical switch comprises a columnar base body, one end of the columnar base body is a butt joint end matched with an adaptive contact in a butt joint mode, and the butt joint end is provided with an elastic contact finger elastically connected with the butt joint endof the adaptive contact in an abutting mode. The elastic contact finger can buffer the impact of the moving contact on the static contact through the elastic deformation of the elastic contact finger.The rigid impact between the moving contact and the static contact is converted into flexible contact, and the elastic force generated by the elastic contact finger after being pressed and deformed can drive the elastic contact finger to press the contact, so that the requirement on the output force of the operating mechanism and the holding mechanism is reduced, and the stability of the conductive connection between the moving contact and the static contact is ensured.

Description

technical field [0001] The invention relates to the technical field of circuit breaker equipment, in particular to a contact and a fracture structure for a high-speed mechanical switch. Background technique [0002] In order to adapt to the development of flexible DC transmission and DC grid, technicians have been researching DC circuit breakers that can break DC fault currents in milliseconds, and the core components of DC circuit breakers are high-speed mechanical switches that affect the breaking time of DC circuit breakers . A high-speed mechanical switch in the prior art usually includes a switch break, an operating mechanism that drives the switch break to open and close, and a holding mechanism that keeps the switch break in the closed state or the open state. [0003] For example, the authorized announcement number is CN208173490U, and the authorized announcement date is 2018.11.30, which discloses a high-voltage DC circuit breaker interrupter holding device. The de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/02H01H33/38H01H1/24H01H1/50
CPCH01H33/02H01H33/38H01H1/24H01H1/50
Inventor 朱继斌钟建英段晓辉朱秋楠谭盛武孙珂珂门博张利欣邢文奇胡延涛熊萍萍魏义涛贺永明
Owner PINGGAO GRP
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