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Encapsulated, pressure-proof, non-hermetically sealed high-power spark gap

A hermetic seal and spark gap technology, which is applied in the field of high-power spark gaps, can solve the problems of low dynamic load capacity of the housing and the trigger electrode sleeve.

Inactive Publication Date: 2012-09-05
DEHN SOHNE GMBH CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dynamic load-carrying capacity of the housing and trigger electrode sleeve is also low there

Method used

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  • Encapsulated, pressure-proof, non-hermetically sealed high-power spark gap
  • Encapsulated, pressure-proof, non-hermetically sealed high-power spark gap

Examples

Experimental program
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Embodiment Construction

[0020] As shown in the figure, a first main electrode 2 and a pair of opposite second main electrodes 3 are arranged inside the metal outer casing 1 . Electrical connection contacts 5 and 6 are connected to the two main electrodes 2 , 3 .

[0021] At least one of the main electrodes, in the exemplary embodiment shown the main electrode 3 , is fixed insulated in the outer housing 1 .

[0022] If necessary, it is possible to introduce a trigger electrode 12 which is connected to an insulated connecting contact 13 into the arc combustion chamber 7 .

[0023] The arc combustion chamber 7.1 is delimited by a hollow body 34 both radially and axially.

[0024] The hollow body 34 can consist of an electrically conductive, gas-generating material, for example POM, but also of a semiconductive or electrically conductive material.

[0025] The hollow body 34 preferably has a narrowing or a closed bottom 40 in the lower region, which completely or partially separates the cavity of the a...

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PUM

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Abstract

The invention relates to an encapsulated, pressure-proof, non-hermetically sealed high-power spark gap comprising two main electrodes positioned opposite one another at a distance, a metallic outer housing, a gas or plasma cool-off chamber surrounded by the outer housing and a plurality of electric connection contacts for the main electrodes and arranged on the end side of the spark gap. The invention provides an arc formation and expansion chamber extending between the main electrodes. The arc formation and expansion chamber is transversely divided into an arc formation chamber (7.1) and an arc expansion chamber (7.2) via a transverse dividing member, wherein a means for connecting the arc formation chamber (7.1) with the arc expansion chamber (7.2) in a pressure-dependent manner is arranged in the transverse dividing member.

Description

technical field [0001] The invention relates to an encapsulated, pressure-resistant and non-hermetically sealed high-power spark gap with two spaced-apart, oppositely arranged main electrodes, a metal outer casing, a gas or plasma surrounded by the outer casing A cooling chamber and an electrical connection contact for the main electrode are preferably arranged at the end of the high-power spark gap. Background technique [0002] In spark gap-based surge arresters according to the prior art, when used in the low-voltage range, the spark gap is designed to be encapsulated in order to avoid an environmentally threatening discharge of hot or also ionized gases. [0003] In venting arresters belonging to the earlier state of the art, up to approximately 90% of the energy converted is mostly discharged into the environment in the form of hot gases. It is clear that both thermal and dynamic loads are increased in the new spark gap due to the avoidance of exhaust gas. This increa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01T4/10
CPCH01T4/10
Inventor A·埃尔哈特M·瓦夫勒S·希尔U·施特朗费尔德
Owner DEHN SOHNE GMBH CO KG