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Explosion-proof plate for metal zinc oxide arrester with corrugated structure

A lightning arrester and zinc oxide technology, applied in the direction of overvoltage protection resistors, varistors, etc., can solve the problems of difficult measurement of the internal pressure of the explosion-proof plate, damage to the airtightness of the gas chamber, and insufficient precision, and achieve thermal conductivity and electrical conductivity Excellent, long service life, the effect of increasing service life

Active Publication Date: 2020-12-22
MAINTENANCE COMPANY OF STATE GRID XINJIANG ELECTRIC POWER COMPANY +1
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AI Technical Summary

Problems solved by technology

[0004] In order to solve the existing technical problems such as difficulty in measuring the internal pressure of the explosion-proof plate, insufficient precision, damage to the airtightness of the gas chamber, and complicated production, the present invention provides an explosion-proof plate for a metal zinc oxide arrester with a corrugated structure, specifically as follows:

Method used

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  • Explosion-proof plate for metal zinc oxide arrester with corrugated structure
  • Explosion-proof plate for metal zinc oxide arrester with corrugated structure
  • Explosion-proof plate for metal zinc oxide arrester with corrugated structure

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Embodiment 1

[0031] When the plate body 1 is used, as Figure 7 As shown, it is fixedly installed on the top of the arrester, and the interior of the arrester is filled with high-purity N 2 or SF 6 Gas, its internal pressure is higher than the external atmospheric pressure, the pressure difference is about 0.03 ~ 0.05MPa. The edge of the board body 1 forms a seal with the top of the arrester, and the board body 1 is as figure 2 The state shown is convex, and the strain gauge 5 is in the reference deformation state at this time.

[0032] When the internal pressure of the arrester leaks, the deformation of the plate body 1 will decrease. At this time, the plate body 1 is as figure 1 In the state shown, the deformation of the annular corrugated protrusion 3 of the plate body 1 is reduced, and the deformation detected by the strain gauge 5 laid on it is correspondingly reduced, and the deformation amount of the strain gauge 5 outputs the internal pressure signal of the arrester through the...

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Abstract

The invention relates to an explosion-proof plate for a metal zinc oxide arrester of a corrugated structure. The explosion-proof plate is arranged at the top of the arrester and is sealed; the explosion-proof plate comprises an explosion-proof plate and a pressure detection device, wherein a spherical bulge is arranged at the center of the top surface of the explosion-proof plate; two annular corrugated bulges which are concentric with the spherical bulge are arranged from the center to the outside at an equal distance; the explosion-proof plate is made of beryllium bronze; the pressure detection device comprises a strain gauge and a variable conversion device; the strain gauge is laid on the surface of the annular corrugated bulge; the strain gauge is electrically connected to the variable conversion device; and the variable conversion device can convert the deformation quantity of the strain gauge into the pressure in an air chamber of the arrester. The explosion-proof plate has theadvantages that the service life is long, the economy is high, the airtightness damage is reduced, the explosion-proof matching is realized, and the detection precision is high.

Description

technical field [0001] The invention relates to an explosion-proof plate for a lightning arrester, in particular to an explosion-proof plate for a metal zinc oxide lightning arrester with a corrugated structure. Background technique [0002] With the rapid development of new strategic power technologies such as energy Internet and smart grid, metal oxide arresters have the advantages of low residual voltage after overvoltage, easy insulation coordination, no freewheeling, and steep wave response compared with traditional types of arresters. The advantages of good characteristics and large flow capacity make its application in modern power systems gradually increase. However, in the actual power grid operation, the metal oxide arrester installed outdoors has a harsh working environment, and is affected by natural environments such as sunlight, rain, snow, wind and sand, temperature and altitude changes for a long time. Defects such as moisture in the unit or cracking of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C7/12
Inventor 党园马众秦志敏张楠周刚捷吕利军侯珂潘以本石辉石海珍黄黎明王彦荣孙永刚乔佳男晁攸重
Owner MAINTENANCE COMPANY OF STATE GRID XINJIANG ELECTRIC POWER COMPANY
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