Multi-metal lightning stroke overvoltage and overcurrent releaser

A lightning strike overvoltage and overcurrent technology, applied in the direction of connecting contact materials, etc., can solve the problems of ground wire corrosion and fracture, and achieve the effects of small contact resistance, reduced ground resistance, and low manufacturing cost

Active Publication Date: 2016-09-28
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0010] 3) The grounding wire itself is corroded or even broken
However, there are situations where the grounding resistance value is as high as dozens or hundreds of ohms, exceeding the specification requirements of 10Ω. This is relatively easy to handle in the newly installed towers, which can be constructed at

Method used

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  • Multi-metal lightning stroke overvoltage and overcurrent releaser
  • Multi-metal lightning stroke overvoltage and overcurrent releaser
  • Multi-metal lightning stroke overvoltage and overcurrent releaser

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Embodiment Construction

[0031] figure 1 It is the case of adding mesh wires to cement poles, where 1 is the original single ground wire, 2 is the (connected) round hoop, and 3 is the bent metal round bar (that is, adding multiple metal strip ground wires).

[0032] A multi-metal overvoltage and overcurrent releaser for lightning strikes. The hoop 2 is composed of two semicircular hoops with the same shape. Each semicircular hoop has an ear plate for bolt connection at both ends, and each semicircular hoop is uniformly welded with A plurality of crimping pieces 4, the crimping piece 4 punched by metal plate is composed of an inverted U-shaped piece and left and right ear pieces, and each crimping piece 4 is inserted with a bent metal round bar 3 , and the curved metal round bar 3 and the left and right gaps of the corresponding crimping piece 4 are respectively pressed with arc-shaped wedges 5 for fixing ( figure 2 Each bent metal round bar is inserted into two crimping pieces and fixed, that is, mu...

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Abstract

The invention discloses a multi-metal lightning stroke overvoltage and overcurrent releaser, and belongs to the field of power tower lightning arrester manufacturing. A circular hoop consists of two semicircle hoops with the same shape, and two ends of each semicircle hoop are respectively provided with an ear plate through a bolt. Each semicircle hoop is uniformly provided with a plurality of crimping pieces in a welding manner. The crimping pieces formed by the stamping of metal sheets respectively consist of an inverted U-shaped piece, a left ear piece, and a right ear piece. Moreover, each crimping piece is provided with a bent metal circular strip in a plugging manner, wherein the bent metal circular strip is respectively fixed with arc-shaped wedges pressed in the left and right gaps of the corresponding crimping piece. The releaser is especially suitable for the reconstruction of a lightning-protection function of an old pole, cam effectively reduce the grounding resistance under the condition that the stability of the base of the old pole is not affected, and improves the lightning-protection reliability.

Description

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Claims

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Application Information

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Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST
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