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Non-polar hydrogen mixed gas DC (direct-current) arc extinction system for DC contactor

A DC contactor and mixed gas technology, applied in the field of arc extinguishing system, can solve the problem of inability to realize positive and negative current energization work, etc., achieve excellent arc extinguishing effect, increase arc voltage, and easy arc extinguishing effect.

Active Publication Date: 2012-07-18
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods have their own advantages and disadvantages, but they all have the disadvantage of polarity, and they cannot realize that both positive and negative currents can be energized on the switch.

Method used

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  • Non-polar hydrogen mixed gas DC (direct-current) arc extinction system for DC contactor
  • Non-polar hydrogen mixed gas DC (direct-current) arc extinction system for DC contactor
  • Non-polar hydrogen mixed gas DC (direct-current) arc extinction system for DC contactor

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] see figure 1 , Figure 1A , Figure 1B , Figure 1C , Figure 1D As shown, the present invention is a non-polar hydrogen mixed gas DC arc extinguishing system suitable for DC contactors. The DC arc extinguishing system includes a load A electrode 3A, a load B electrode 3B, an inflation conduit 4, a housing, and a grid Assembly 7, contact assembly 8, magnetic blow assembly 9.

[0044] (1) Shell

[0045] see figure 1 , Figure 1A , Figure 1B As shown, the housing includes a sealing cover 2 , an insulating ring 1 and an insulating plate 5 .

[0046] The center of the insulating plate 5 is provided with a fourth through hole 51 , and the fourth through hole 51 is used for one end of the contact spring bracket 6 to pass through. The other end of the contact spring bracket 6 is placed in the blind hole 931 of the partition 93 of th...

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Abstract

The invention discloses a non-polar hydrogen mixed gas DC (direct-current) arc extinction system for a DC contactor. The DC arc extinction system comprises a moving contact, four pairs of moving and static arc striking contacts, a static contact, a grid group and a permanent magnet. The non-polar hydrogen mixed gas DC arc extinction system is non-polar, namely the arc extinguishing property can not be influenced by the change of the current direction. According to the non-polar hydrogen mixed gas DC arc extinction system, the arc striking contacts strike electric arc to smoothly move along a track of the arc striking contacts, the arc striking contacts, the grid group and the permanent magnet are reasonably arranged, and the electric arc between the moving contact and the static contact is better and rapidly extinguished, thus the short circuit caused by sudden reversing of current is solved, and the breaking capacity is further improved. Hydrogen or a hydrogen mixed gas can be inflated into the non-polar hydrogen mixed gas DC arc extinction system for realizing arc extinguishing.

Description

technical field [0001] The invention relates to an arc extinguishing system for a DC contactor, in particular to a system for arc extinguishing using hydrogen or hydrogen gas mixture used in a nonpolar DC contactor. Background technique [0002] DC contactors are mainly used for long-distance switching and breaking of DC circuits and frequent starting, stopping, reverse and reverse braking of DC motors. [0003] The main principle of the DC contactor: the electromagnetic coil is energized, the armature and the iron core are attracted, the suction force of the electromagnetic system overcomes the reaction force of the spring to drive the moving contact to contact the static contact, and the main circuit is connected; the electromagnetic coil is powered off, and the reaction of the spring The force drives the armature and the moving contact to separate, and the arc generated by the disconnection of the contact is elongated in the arc extinguishing chamber by the magnetic extin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H50/38
CPCH01H50/023H01H9/34H01H2050/025
Inventor 武建文辛超
Owner BEIHANG UNIV
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