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High-voltage circuit breaker

A high-voltage circuit breaker and circuit breaker technology, applied in the high-voltage electrical field, can solve problems such as unsatisfactory application effects, and achieve the effects of intelligent operation, reduced moment of inertia, and shortened length

Inactive Publication Date: 2015-06-10
STATE GRID CORP OF CHINA +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The latter two patents only describe a local single part, and the actual application effect is not ideal

Method used

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] like figure 1 , The present invention provides a high-voltage circuit breaker, the circuit breaker includes a phase A porcelain bushing, a B phase porcelain bushing, a C phase porcelain bushing, a first lever box 5, a second lever box 6, and a third lever box 7 and the transmission structure; the A-phase porcelain bushing, B-phase porcelain bushing, and C-phase porcelain bushing are respectively connected to the transmission structure through the first crank box 5, the second crank box 6, and the third crank box 7.

[0028] like figure 2 , the transmission structure includes a drive motor 4, a first transmission crank 11, a second transmission crank, a third transmission crank, a first transmission main shaft 3 and a second transmission main shaft 8;

[0029] The motor output shaft 9 of the drive motor 4 is connected to one end of the first transmis...

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Abstract

The invention provides a high-voltage circuit breaker. The circuit breaker comprises an A phase ceramic sleeve, a B phase ceramic sleeve, a C phase ceramic sleeve, a first connecting lever box, a second connecting lever box, a third connecting lever box and a transmission structure; the A phase ceramic sleeve, the B phase ceramic sleeve and the C phase ceramic sleeve are respectively connected with the transmission structure through the first connecting lever box, the second connecting lever box and the third connecting lever box. The high-voltage circuit breaker is simple in connection structure; the transmission structure with a driving motor is adopted only; compared with the traditional circuit breaker, the high-voltage circuit breaker has the advantages that the parts are greatly reduced, and the reliability is improved; an abutting flange and a medium flange of a three-phase high-voltage circuit breaker are saved, the length of a main transmission shaft is reduced, so that the rotational inertia of the whole transmission structure can be fully reduced, and as a result, the strict requirements on starting torque of the driving motor, acceleration and overload capacity can be decreased; the high-voltage circuit breaker of such structure can be applied to the actual engineering, and the model of the driving motor can be conveniently selected.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electrics, and in particular relates to a high-voltage circuit breaker. Background technique [0002] Due to the high failure rate, poor stability and complex mechanical structure of the traditional high-voltage circuit breaker operating mechanism, it brings great safety hazards to the safe operation of the power system. In recent years, a new type of operating mechanism using a motor to drive a high-voltage circuit breaker has been proposed, which can solve the above problems. However, in the process of actual design and engineering application, it is found that due to the large operating work required for the opening and closing of the high-voltage circuit breaker, the moment of inertia of the entire transmission structure is too high, so the requirements for the acceleration, overload capacity and dynamic response capacity of the motor are very high. This has brought great obstacles to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10
CPCH01H33/36H01H33/42
Inventor 冯英何洁陈允魏明磊孙辰军
Owner STATE GRID CORP OF CHINA
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