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A single-pole vacuum circuit breaker

A technology for vacuum circuit breakers and circuit breakers, which is applied to high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems of short service life and complex structure of single-phase vacuum circuit breakers, and achieves improved service life and more mechanical life times. , The effect of convenient transportation

Active Publication Date: 2017-08-01
ZHEJIANG HUAYI ELECTRIC APPLIANCE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention lies in the defects of complex structure and short service life of single-phase vacuum circuit breakers in the prior art, so as to provide a single-phase vacuum circuit breaker with simple structure and long service life

Method used

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  • A single-pole vacuum circuit breaker
  • A single-pole vacuum circuit breaker
  • A single-pole vacuum circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 and figure 2 As shown, this embodiment provides a single-pole vacuum circuit breaker including an embedded pole 3, a vacuum interrupter 13 is provided in the embedded pole 3, and a static contact is arranged in the vacuum interrupter 13 131 and a moving contact 132, the moving contact 132 is connected with the insulating pull rod 12, and also includes an operating mechanism that controls the movement of the insulating pull rod 12 to realize opening and closing, and the operating mechanism includes, connected with the insulating pull rod 12 The transmission shaft 18, and the permanent magnet mechanism 7 that controls the movement of the transmission shaft 18, the opening coil of the permanent magnet mechanism 7 is energized when the brake is electrically opened, and the moving iron core of the permanent magnet mechanism 7 pulls the transmission shaft 18 And the insulating pull rod 12 makes the circuit breaker open. When the circuit breaker is in the op...

Embodiment 2

[0043] This embodiment provides a vacuum circuit breaker. The difference from Embodiment 1 is that the transmission shaft 18 is provided with a through hole in the radial direction, and the shaft 16 passes through the through hole of the transmission shaft 18 to realize the transmission. Fixed connection of shaft 18 to shaft 16 . Of course, other fixed connection methods can be used. For example, the shaft 16 and the transmission shaft 18 are connected and fixed by pins or bolts in the radial direction. As long as the transmission shaft 18 is fixedly connected with the shaft 16, the The movement drives the shaft 16 to move, stretching or compressing the opening spring 17 hooked on the shaft 16, and other fixed connection methods to realize the rapid opening and closing process of the circuit breaker.

Embodiment 3

[0045] This embodiment provides a vacuum circuit breaker, the difference from Embodiment 1 is that: the shaft 121 that is threaded at one end of the insulating rod 12 is directly fixedly connected to the transmission shaft 18, which can be connected by bolts, pins, etc. All kinds of fixed connection methods are available. The axial movement of the transmission shaft 18 directly drives the insulating pull rod 12 to move, so that the moving contact 132 and the static contact 131 are opened and closed to realize the opening and closing process of the circuit breaker.

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Abstract

The invention belongs to the technical field of power system high-voltage circuit breakers, and particularly relates to a monopole vacuum circuit breaker. The monopole vacuum circuit breaker comprises a fixedly-sealed pole column which is internally provided with a vacuum arc-extinguishing chamber. A static contact and a movable contact are arranged in the vacuum arc-extinguishing chamber. The movable contact is connected with an insulation pull rod. The circuit breaker further comprises an operation mechanism for controlling the insulation pull rod to move to achieve switch-on and switch-off operation. The operation mechanism comprises a transmission shaft connected with the insulation pull rod and a permanent magnetic mechanism for controlling the transmission shaft to move. In the electric switch-off process, a switch-off coil of the permanent magnetic mechanism is electrified to drive a movable iron core in the permanent magnetic mechanism to pull the transmission shaft and the insulation pull rod so as to switch off the circuit breaker; when the circuit breaker is in a switch-off state, a switch-on coil of the permanent magnetic mechanism is electrified to drive the movable iron core in the permanent magnetic mechanism to push the transmission shaft and the insulation pull rod so as to switch on the circuit breaker. A spring structure adopted in a traditional circuit breaker is replaced with the permanent magnetic mechanism to achieve the switch-off and switch-on processes, and the circuit breaker is simple in whole structure, small in occupied space, long in mechanical service and reliable in performance.

Description

technical field [0001] The invention relates to a single-pole vacuum circuit breaker, which belongs to the technical field of high-voltage circuit breaker equipment in power systems. Background technique [0002] Outdoor high-voltage vacuum circuit breakers are mainly used for breaking and closing load currents, overload currents and short-circuit currents in power systems; they are suitable for control and protection of power systems, and are most widely used in urban distribution networks and rural power grids. High-voltage vacuum circuit breakers The development trend of switching equipment in recent years is to increase energy saving and environmental protection, strengthen the simplification of structure, the reliability of operation, and the development of maintenance-free switchgear; the core part of which is the efficient, safe and reliable operation of the opening and closing operating mechanism. [0003] At present, most domestic high-voltage vacuum circuit breaker...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/666
CPCH01H33/666
Inventor 蒋劲松
Owner ZHEJIANG HUAYI ELECTRIC APPLIANCE TECH
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