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Vacuum circuit breaker and electric locomotive

A technology of vacuum circuit breaker and vacuum switch tube, which is used in high-voltage air circuit breakers, electric vehicles, circuits, etc., can solve problems such as poor electrical contact surface contact, and achieve the effect of avoiding overheating and burning of screws

Inactive Publication Date: 2012-10-17
DATONG ELECTRIC LOCOMOTIVE OF NCR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The invention provides a vacuum circuit breaker and an electric locomotive to solve the problem that the existing vacuum circuit breaker is prone to poor contact of the conductive contact surface during use

Method used

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  • Vacuum circuit breaker and electric locomotive
  • Vacuum circuit breaker and electric locomotive
  • Vacuum circuit breaker and electric locomotive

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Embodiment Construction

[0040] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] image 3 It is a schematic structural diagram of a vacuum circuit breaker provided by an embodiment of the present invention, Figure 4 for image 3 top view of Figure 5 It is a side view of the partial structure of the vacuum circuit breaker provided by the embodiment of the present invention, Figure 6 It is a schematic diagram of th...

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Abstract

The invention discloses a vacuum circuit breaker and an electric locomotive. The vacuum circuit breaker comprises an input terminal, an upper flange, a vacuum switch tube, a main static contact, a screw rod, a porcelain insulator soft connection line and an elastic washer. Two ends of the soft connection line are fixedly connected to the upper flange, and a middle joint of the soft connection line is in contact with an upper end face of the screw rod. The elastic washer is fixedly connected to the upper flange, a lower end surface of the elastic washer is in contact with the middle joint of the soft connection line. According to the vacuum circuit breaker, a problem of the poor contact of conductive contact surfaces of the vacuum circuit breaker caused by the loosing of fasteners like a screw and a bolt or the expansion and contraction of relevant parts caused by temperature change in the circuit breaker in the prior art can be thoroughly solved.

Description

technical field [0001] The invention relates to a circuit breaker structure technology, in particular to a vacuum circuit breaker and an electric locomotive. Background technique [0002] The main circuit breaker is installed on the electric locomotive, and the main circuit breaker is used for the breaking, overload and short circuit protection of the power supply of the locomotive. The main circuit breakers used on electric locomotives in my country mainly involve 22CB vacuum circuit breakers. [0003] Main technical parameters of 22CB vacuum main circuit breaker: [0004] Rated voltage: 25kV, [0005] Rated current: 1000A, [0006] Maximum breaking current: 16kA rms. [0007] figure 1 A schematic diagram of a partial structure of a vacuum circuit breaker provided in the prior art, figure 2 for figure 1 top view, such as figure 1 and figure 2 As shown, the existing 22CB series vacuum main circuit breaker mainly includes input terminal 19, upper flange 11, tin she...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/66B60L5/18
Inventor 宋立业崔启超原志强
Owner DATONG ELECTRIC LOCOMOTIVE OF NCR