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Gas-insulated tripolar mechanical linkage breaker

A gas insulation and circuit breaker technology, applied in high-voltage air circuit breakers, circuits, electrical components, etc., can solve the problems that the pneumatic device cannot reach the pressure value, the equipment occupies a large area, and the compressed air leaks. Small size, low construction cost, and the effect of preventing phase loss operation

Active Publication Date: 2010-02-03
CHINT ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The three-pole mechanical linkage of the circuit breaker is completed by a pneumatic device, and the action of this device must be equipped with a compressed air station as a power source and the air source is sent to the pneumatic device by laying a certain length of pipeline. , the laying of pipelines may easily cause compressed air leakage, resulting in the failure of the pneumatic device to reach the pressure value of the action. In addition, the placement of the compressed air station results in a large equipment footprint and high equipment cost

Method used

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  • Gas-insulated tripolar mechanical linkage breaker

Examples

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Embodiment

[0016] Such as figure 1 and figure 2 As shown, it is a schematic structural diagram of a gas-insulated three-pole mechanical linkage circuit breaker provided by the present invention. The circuit breaker 1 includes an arc extinguishing chamber 2 with three poles parallel to each other, a driving device 3 and a chassis 4 . The base frame 4 made of metal profiles is installed on the foundation 5, and the rotatable circuit breaker 1 is vertically connected with the base frame 4, and this connection is an adjustable connection.

[0017] The upper part of the arc extinguishing chamber casing of each pole of the circuit breaker 1 can usually rotate 90° or 180° around the pole axis, so each pole can have outlets in different directions.

[0018] Such as image 3 As shown, it is a schematic diagram of the structure of the arc extinguishing chamber 2. The static contact 7 at the center upper end of the shell 6 of the arc extinguishing chamber 2 is connected to the cover plate 9 thro...

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Abstract

The invention relates to a gas-insulated tripolar mechanical linkage breaker characterized by comprising arc-extinguishing chamber, the three polars of which are mutually parallel. The arc-extinguishing chamber is provided with an upper leading-out terminal and a lower leading-out terminal and is connected with a driving device arranged at the bottom of the arc-extinguishing chamber; the driving device is arranged on a stand made of metallic sectional bars; and the stand is mounted on a base. The breaker adopts a self-energy arc-extinguishing structure, and the tripolar arc-extinguishing chambers are matched with the driving device to realize the tripolar mechanical linkage of the breaker. The gas-insulated tripolar mechanical linkage breaker cancels air-source equipment, thereby achievingmore compact equipment arrangement, greatly decreasing the area of a power station, reducing the construction fund investment of the power station, avoiding the open-phase operation of the power station equipment and ensuring more reliable operation of the power station. The invention has the advantages of small floor area, low construction cost of the power station and simple structure and improves the operation reliability of the equipment.

Description

technical field [0001] The invention relates to a gas-insulated three-pole mechanical linkage circuit breaker, which is a key component for gas-insulated metal-enclosed switchgear in high-voltage power transmission and transformation systems. Closing, carrying and breaking current under abnormal circuit conditions (such as short-circuit conditions) within a specified time are important switching devices for protection and control, and belong to the technical field of high-voltage switches. Background technique [0002] Generally, circuit breakers for gas-insulated metal-enclosed switchgear have the following disadvantages: [0003] Although the arc extinguishing unit of the circuit breaker adopts the self-energy arc extinguishing principle, it can be equipped with a spring mechanism with a small operating work, but due to the limited operating work of the spring mechanism, it can only realize the three-pole electrical linkage of the circuit breaker. This method must ensure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/22H01H33/46
Inventor 钱卫米雄刚黄琴苏京唐小江刘磊罗刚
Owner CHINT ELECTRIC
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