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Parallel series multi-break arc extinguishing chamber

A technology of arc extinguishing chamber and multiple fractures, which is applied to high-voltage air circuit breakers, electrical components, electric switches, etc., can solve problems such as asynchrony, and achieve the effects of small arc current, reduced opening and closing strokes, and short opening and closing action time

Inactive Publication Date: 2018-02-23
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on the above problems, the object of the present invention is to provide a parallel series multi-fracture arc extinguishing chamber used in high-voltage circuit breakers. Multiple fractures in the arc extinguishing chamber are connected in parallel. many problems caused by

Method used

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  • Parallel series multi-break arc extinguishing chamber
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  • Parallel series multi-break arc extinguishing chamber

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Embodiment 1

[0029] figure 1 , Figure 2a , Figure 2b , image 3 , Figure 5a and Figure 5b What is shown is the implementation form of the even-numbered fracture interrupter of the present invention, and 4 fractures are taken as an example, and the number of fractures increases or decreases, and so on. Such as image 3 As shown, the arc extinguishing chamber is composed of four gaps connected in series, and the static contacts 301, 302, 303, 304, and the moving contacts 311, 312, 313, 314 are respectively placed on the upper and lower sides of the arc extinguishing chamber. Such as Figure 2a , the static contact is fixed on the static contact fixing part 201 , and the moving contact is fixed on the moving contact fixing part 202 . The static contact 301 is connected with the high voltage lead-out rod, and the static contact 304 is connected with the ground electrode lead-out rod. The transmission rod 204 of the arc extinguishing chamber is connected with the transmission mechan...

Embodiment 2

[0034] Figure 4 What is shown is the implementation form of the odd-numbered fracture interrupter of the present invention, 5 fractures are taken as an example, the number of fractures increases or decreases, and so on. Such as Figure 4As shown, five gaps in the arc extinguishing chamber are connected in series, the static contacts 401, 402, 403, 404, 405, and the moving contacts 411, 412, 413, 414, 415 are respectively placed on the upper and lower sides of the arc extinguishing chamber. The static contact is fixed on the static contact fixing piece, and the moving contact is fixed on the moving contact fixing piece. The static contact 401 is connected with the high voltage lead-out rod, and the movable contact 415 is connected with the ground electrode lead-out rod. The transmission rod of the arc extinguishing chamber is connected with the mechanical transmission mechanism, and cooperates with a certain supporting and fixing device to realize the function of a high-volt...

Embodiment 3

[0038] Fig. 5 shows the realization form of the 4-break arc extinguishing chamber applied at a higher voltage level of the present invention. Fracture connection form such as image 3 As shown, 4 gaps in the arc extinguishing chamber are connected in series. The static contact is fixed on the static contact fixing part, and the moving contact is fixed on the moving contact fixing part. The static contact 301 is connected with the high voltage lead-out rod, and the static contact 304 is connected with the ground electrode lead-out rod. The transmission rod of the arc extinguishing chamber is connected with the mechanical transmission mechanism, and cooperates with a certain supporting and fixing device to realize the function of a high-voltage circuit breaker. The transmission mechanism will drive the moving contact fixing part to perform opening and closing movement, and the moving contacts 311 , 312 , 313 , 314 fixed on the moving contact fixing part move synchronously, so ...

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Abstract

The invention relates to an arc extinguishing chamber with parallel series and multi-fracture structures, which is suitable for high-voltage circuit breakers, contactors, grounding switches, etc. that are quickly broken and closed. A moving contact and a static contact are arranged opposite to the fracture, and the static contact and the moving contact are respectively placed on the upper and lower sides of the arc extinguishing chamber; the moving contacts are fixed on the moving contact On the parts, the static contacts are all fixed on the static contact fixing part, and the moving contact fixing part is connected to the transmission mechanism outside the arc extinguishing chamber through the transmission rod, and the transmission rod leads out of the arc extinguishing chamber, and cooperates with the supporting and fixing device to realize High voltage switch function. The arc extinguishing chamber of the present invention is a multi-fracture series structure, which can divide the total voltage, reduce the opening and closing stroke, and shorten the opening and closing action time, which is beneficial to the rapid opening and closing of the switch. At the same time, the contact current through the arc is smaller, the arcing time is shorter, and the contact ablation is effectively weakened.

Description

technical field [0001] The invention relates to a parallel series multi-fracture arc extinguishing chamber, which is suitable for high-voltage circuit breakers that are quickly broken and closed. Background technique [0002] With the rapid development of the national economy, the demand for electricity is increasing, and the characteristics of my country's vast geographical area, population distribution, and economic distribution make the construction of high-voltage DC power grids more important. The DC power grid has the characteristics of large capacity and long distance transmission. Because DC has no natural zero-crossing point, it is difficult to adopt the zero-crossing breaking technology in AC power, so DC breaking has become the key and difficult technology of DC power transmission. High-voltage DC circuit breakers are devices used to open and close DC transmission lines, which are not yet fully mature technically. The traditional technology adopts an additional L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/02H01H33/72
CPCH01H33/025H01H33/72
Inventor 王珏董龙禹严萍
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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