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Vacuum arc-extinguishing chamber, contact assembly thereof and current coils used for contact assembly

A technology of current coil and contact assembly, applied in high-voltage/high-current switches, circuits, electrical switches, etc., can solve the problems of large overall resistance, long conductive path of the current coil, uneven distribution of the overall magnetic field, etc., and achieve a small overall circuit. , The magnetic field distribution is uniform, and the effect of improving the breaking performance

Active Publication Date: 2015-10-28
TIANJIN PINGGAO INTELLIGENT ELECTRIC +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conductive path of the current coil with half coils arranged on the upper and lower layers is too long, the overall resistance is relatively large, and the overall magnetic field distribution is uneven, which affects the breaking ability of the contact structure in the vacuum interrupter.

Method used

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  • Vacuum arc-extinguishing chamber, contact assembly thereof and current coils used for contact assembly
  • Vacuum arc-extinguishing chamber, contact assembly thereof and current coils used for contact assembly
  • Vacuum arc-extinguishing chamber, contact assembly thereof and current coils used for contact assembly

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Embodiment Construction

[0028] Such as figure 1 , figure 2As shown, an embodiment of a current coil, the current coil in this embodiment includes a first sub-coil 100 and a second sub-coil 200 extending around the circumferential direction and arranged in parallel, and each sub-coil includes a staggered distribution in the up and down direction And the upper coil segment for conductive connection with the conductive rod of the contact assembly and the lower coil segment for conductive connection with the contact blade of the contact assembly connected in series, the first sub-coil 100 includes a first upper coil segment 101 and the first lower coil segment 102, the second sub-coil 200 includes a second upper coil segment 201 and a second lower coil segment 202, wherein the first upper coil segment 101 of the first sub-coil 100 is spaced apart from the second sub-coil 200 Above the second lower coil section 202 of the second sub-coil 200, the second upper coil section 201 of the second sub-coil 200 ...

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Abstract

The invention provides a vacuum arc-extinguishing chamber, a contact assembly thereof and current coils used for the contact assembly. The current coils comprise two sub coils which extend in the circumferential direction and are disposed in parallel. Each sub coil comprises an upper coil section and a lower coil section which are arranged in an up-down staggered manner and are electrically connected in series. The two lower coil sections are two one-second turns of coil sections which are symmetrically arranged around a central line of the current coils. Each of the two sub coils is a three-fourths turn of coil section formed by a one-fourth turn of coil section and a one-second turn of coil section. The current of each of two parallel branches formed by the two sub coils flows through the circumferential path of the three-fourths turn of coil section, the current path is short, the integral circuit is relatively small, and the upper and lower coil sections are symmetrically arranged around the center of the current coils, so that the distribution of magnetic fields generated by the current coils is relatively uniform.

Description

technical field [0001] The invention relates to a vacuum interrupter, a contact assembly thereof, and a current coil for the contact assembly. Background technique [0002] At present, sulfur hexafluoride circuit breakers occupy a dominant position in high-voltage and ultra-high-voltage circuit breakers. Sulfur hexafluoride gas has good insulation performance and excellent arc extinguishing performance, and its compressive strength is 2.5 times that of nitrogen gas under the same pressure. However, sulfur hexafluoride gas is a greenhouse gas, and its single-molecule greenhouse effect is 22,000 times that of carbon dioxide. It is one of the six greenhouse gases that are prohibited from being emitted in the "Kyoto Protocol", and it is recommended to be completely banned by 2030. Sulfur hexafluoride gas. Therefore, vacuum circuit breakers have gradually become the future development direction of circuit breakers due to their advantages of less environmental pollution, less...

Claims

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Application Information

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IPC IPC(8): H01H33/664
CPCH01H33/664
Inventor 王晓琴张雪敏李文艺施大成李敏吴军辉关琦
Owner TIANJIN PINGGAO INTELLIGENT ELECTRIC
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