Dynamic arc extinguishing system

A kind of arc extinguishing and dynamic technology, applied in the direction of circuit breaker contacts, circuit breaker parts, etc., it can solve the problems of continuous arc burning, impact of product breaking capacity, and reduction of product electrical life, etc., to achieve fast arc extinguishing speed and reduce contacts. Ablation time, simple structure effect

Inactive Publication Date: 2020-05-01
江苏高博锐电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the layout of the grids is unreasonable, the arc cannot enter the arc extinguishing chamber smoothly, causing the arc to burn continuously on the contacts, which not only has a major impact on the breaking capacity of the product, but also reduces the electrical life of the product after long-term use

Method used

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  • Dynamic arc extinguishing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Such as figure 1 As shown, a dynamic arc extinguishing system corresponds to a circuit breaker 1 . A moving contact assembly 7 is connected to the circuit breaker 1 through a rotating shaft, and a contact plate 5 is arranged on the moving contact assembly 7 . Both the circuit breaker and the moving contact assembly are existing designs, and their structures and principles will not be repeated here.

[0020] The dynamic arc extinguishing system includes a connecting rod 6 connected to a moving contact assembly 7, and the connecting rod 6 is connected with a transmission assembly. The transmission assembly is connected with a dynamic arc extinguishing mechanism. There is a circular groove inside the circuit breaker 1 . The contact plate and the dynamic arc extinguishing mechanism can be closed or disconnected.

[0021] The dynamic arc extinguishing mechanism includes a circular rotating shaft 8 that is connected to the rotating shaft 9 through transmission, and the circ...

specific Embodiment approach

[0023] The specific implementation method is: when the contact is disconnected, the moving contact drives the arc extinguishing chamber to rotate counterclockwise with the launch shaft as the center by the connecting rod, the arc enters the arc extinguishing chamber, the arc is cut by the grid, and as the moving contact opens As the distance increases, the arc extinguishing chamber is also constantly rotating, and the arc is also being dynamically cut by the grid, so the arc energy can be reduced rapidly, and its emission structure is also conducive to the divergence of arc heat.

[0024] The arc extinguishing chamber of the present invention has an emissive overall structure, the arc enters the arc extinguishing chamber at the best angle at all times, the arc extinguishing speed is fast, the breaking performance of the product is improved, the contact ablation time is reduced, and the electrical life is improved.

[0025] The arc extinguishing chamber of the present invention ...

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PUM

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Abstract

The invention discloses a dynamic arc extinguishing system. The system comprises a connecting rod connected with a moving contact assembly, wherein the connecting rod is connected with a transmissionassembly, the transmission assembly is connected with a dynamic arc extinguishing mechanism, a circular groove is formed in the circuit breaker, the dynamic arc extinguishing mechanism is located in the circular groove and installed in the circuit breaker through a rotating shaft, and a contact plate and the dynamic arc extinguishing mechanism can be closed or opened. The system is advantaged in that an arc extinguishing chamber is of an emission type integral structure, an arc enters the arc extinguishing chamber at the best angle all the time, the arc extinguishing speed is high, product breaking performance is improved, the contact ablation time is shortened, and the electrical service life is prolonged.

Description

technical field [0001] The invention belongs to the field of circuit breakers, and more specifically relates to a dynamic arc extinguishing system. Background technique [0002] Arc extinguishing is an important function of switchgear, because arc not only damages equipment and lines, but also affects personal safety of switchgear, so the arc test is very strict. [0003] For circuit breakers, the breaking current is usually relatively large, and the moment the product is broken, the arc is accompanied by a large amount of heat eruption, and a high-voltage and high-temperature environment is formed in the entire arc-extinguishing system. If the design of the arc extinguishing system is unreasonable, the arc cannot be extinguished quickly, which may accelerate contact ablation and affect product performance and life, or cause product explosion and affect circuit safety. The importance of the arc extinguishing system is self-evident, and it is necessary to pay attention to re...

Claims

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Application Information

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IPC IPC(8): H01H73/18H01H73/04
CPCH01H73/04H01H73/18
Inventor 段新高朱金星
Owner 江苏高博锐电气有限公司
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