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Double-action type linkage mechanism for extra-high voltage circuit breaker

A technology of link mechanism and circuit breaker, which is applied in the field of double-acting link mechanism, can solve the problem of large operating power of single-acting interrupter, and achieve the effect of reducing operating work

Inactive Publication Date: 2009-11-25
HENAN PINGGAO ELECTRIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, all UHV circuit breakers use single-acting arc extinguishing chambers. This method has the following problems: Since only the moving contacts move when opening and closing, the operating power of single-acting interrupting chambers is relatively large, reaching several million joules

Method used

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  • Double-action type linkage mechanism for extra-high voltage circuit breaker
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  • Double-action type linkage mechanism for extra-high voltage circuit breaker

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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0025] The embodiment of the invention discloses a double-acting linkage mechanism for a circuit breaker, so as to solve the problem of large operating power of the single-acting circuit breaker.

[0026] Only one of the two contacts of the single-acting arc extinguishing chamber moves, so the moving contact is called a moving contact, and the other is called a static contact. However, the two contacts of the double-acting arc extinguishi...

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Abstract

The invention embodiment discloses a double-action type linkage mechanism for a circuit breaker, which includes a first linkage mechanism and a second linkage mechanism with the same structure, wherein any one linkage mechanism comprises: a first insulated pull rod, a first connecting plate, a crank, a support and a second insulated pull rod. The first insulated pull rod is connected with a first contact of the circuit breaker. One end of the first connecting plate is connected on a first insulated pull rod by a first pin and the other end is connected with one end of the crank by a second pin. The other end of the crank is connected with the other end of the second insulated pull rod one end of which is connected with the second contact of the circuit breaker, and the middle portion of the crank is connected with one end of the support by a third pin. The other end of the support is fixedly connected on an arc extinguish chamber shell of the circuit breaker. The invention embodiment greatly reduces the operation work of the extra-high voltage circuit breaker and successes to run with power in an extra-high voltage AC experiment demonstration project.

Description

Technical field [0001] The invention relates to the technical field of circuit breakers, in particular to a double-acting linkage mechanism for circuit breakers. Background technique [0002] With the development of circuit breakers, various forms of arc extinguishing chambers have emerged to improve the breaking performance of circuit breakers. Single-acting and double-acting arc extinguishing chambers are two of them. Single action means that only the moving contact of the arc extinguishing chamber moves when opening and closing. Double action means that not only the moving contact of the arc extinguishing chamber moves, the static contact of the arc extinguishing chamber also moves in the opposite direction with the moving contact. That is, when the switch is opened, the moving and static contacts move back, and when the switch is closed, they move towards each other. The double-acting arc extinguishing chamber mainly realizes the two-way movement of the moving and static cont...

Claims

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Application Information

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IPC IPC(8): H01H3/46H01H33/42
Inventor 孙岗韩书谟赵鸿飞谭盛武赵文强钟建英
Owner HENAN PINGGAO ELECTRIC
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