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Overvoltage protecting device based on hollow electrode

A technology of hollow electrodes and protection devices, which is applied to emergency protection circuit devices, electrical components, and high-voltage air circuit breakers for limiting overcurrent/overvoltage, and can solve the problem of late overvoltage protection devices and the research level of overvoltage protection devices Low problems, to achieve the effect of small action voltage

Inactive Publication Date: 2005-09-28
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

Domestic research on overvoltage protection devices for power systems started relatively late, especially research on overvoltage protection devices with large current capacity is relatively low

Method used

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  • Overvoltage protecting device based on hollow electrode
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Embodiment Construction

[0008] The structural principle and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0009] see figure 1 , the present invention includes a parallel upper electrode 1 and a lower electrode 2 arranged in an insulating airtight casing 4 made of ceramic material, the upper electrode 1 and the lower electrode 2 are hollow structures whose surface is polished into a mirror surface and are encapsulated by an upper end cap 15 and the lower package end cap 16 are packaged in the insulating and airtight casing 4, the trigger electrode 3 is arranged in the upper electrode 1 or the lower electrode 2, the distance 7 between the end faces of the upper electrode 1 and the lower electrode 2 is 1-3mm, and the One or more corresponding concentric through-holes 6 are opened on the end faces of the electrode 1 and the lower electrode 2. The diameter of the through-holes 6 is 2-5mm, and a shielding cover is also ...

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Abstract

The present invention relates to an overvoltage protection device based on hollow electrodes. It includes upper hollow electrode and lower hollow electrode which are parallel and packaged in an insulated closed external shell by means of upper packaging end cover and lower packaging end cover, the interior of upper packaging end cover and lower packaging end cover, the interior of upper electrode or lower electrode is equipped with trigger electrode, and the spacing distance between end face of upper electrode and end face of lower electrode is 1-3 mm, and on the end face of upper electrode and on the end face of lower electrode one or more than one correspondent concentric through hole is cut respectively, and the diameter of said through hole is 2-5 mm, between upper electrode and lower electrode a shielding case is set.

Description

technical field [0001] The invention relates to an overvoltage protection device, in particular to an overvoltage protection device based on a hollow electrode. Background technique [0002] With the rapid development of information systems, the research work on overvoltage protection devices used in power systems has attracted great attention. Spark switches with various electrode shapes have been reported extensively. Among them, the gap-type overvoltage protectors of German Phoenix Contact Co., Ltd., Obetman Co., Ltd., DHEN Company and French CITEL Company are representative. The technology of German Phoenix Contact Co., Ltd. involves two angular electrodes forming a "V"-shaped spark gap. When the spark gap is ignited, an arc is generated between the two electrodes. Its advantage is that it can withstand a large impact current. The disadvantage is that the operating voltage is relatively high and the operating voltage is not very stable. Its improvement is that an auxi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H1/06H01H33/64H02H9/06
Inventor 陈景亮姚学玲刘东社孙伟
Owner XI AN JIAOTONG UNIV
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