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Integral post insulator type lightning arrester for electrified railway

A technology for electrified railways and pillar insulators, applied in the directions of supporting insulators, resistors, insulators, etc., can solve the problems of increasing the cross arm load and installation strength, the arrester occupying installation space, and consuming material resources, etc., to save installation space and have a beautiful structure. And the effect of compact, stable equipment operation

Pending Publication Date: 2020-05-01
江西中南绝缘子有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above installation method can effectively protect the electrical equipment in overhead transmission lines such as railway catenary, it causes the arrester to occupy the installation space on the cross arm of the utility pole, increase the load and installation strength of the cross arm, and consume more material resources , the problem of increasing the installation cost

Method used

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  • Integral post insulator type lightning arrester for electrified railway
  • Integral post insulator type lightning arrester for electrified railway
  • Integral post insulator type lightning arrester for electrified railway

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Embodiment Construction

[0026] In the figure, this embodiment is used for 27.5kV electrified railway catenary: a kind of integrated lightning protection cylindrical composite insulator, which includes an insulating cylinder 7 made of Wolan cloth tube and a composite jacket fixedly fitted on the insulating cylinder 6. The insulation cylinder is made of Wolanbu tube, which is made of glass, high-strength fiber and resin. It not only has high strength, high temperature resistance (above 160°C), but also has good wear resistance and insulation performance. The composite jacket It is made of silicone rubber and a fluidization process. The composite jacket is provided with umbrella skirts of different diameters at intervals along its axial direction, and the two ends of the insulating cylinder are respectively fixedly provided with an upper flange 1 and a lower flange 1 fixedly connected with the composite jacket. Flange 12, upper flange 1 and lower flange 12 are made of No. 45 steel material, and several z...

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Abstract

The invention discloses an integrated post insulator type lightning arrester for an electrified railway. The device comprises an insulating cylinder and a composite jacket fixedly assembled on the insulating cylinder, wherein an upper flange and a lower flange are fixedly arranged at two ends of the insulating cylinder respectively, a zinc oxide resistor disc is arranged in the insulating cylinderand separated by an aluminum backing ring, an upper electrode is arranged in the upper flange, one end of the upper electrode is hermetically connected with the upper flange, a spring is arranged between the upper electrode and the zinc oxide resistor disc, one end of the lower electrode is hermetically connected with the lower flange, and an adjusting gasket is arranged between the lower electrode and the zinc oxide resistor disc. The device is advantaged in that a locomotive of the electrified railway can be protected from being subjected to overvoltage impact, can further be used as a force-bearing insulator, realizes dual functions of integrating excellent protection characteristics of the lightning arrester and mechanical characteristics of the insulator, can reduce consumption of resources, saves cost, can enable equipment to operate stably, and is more compact in structure.

Description

technical field [0001] The invention relates to a post insulator of a power transmission line, in particular to a post insulator type surge arrester for a catenary of a 27.5kV electrified railway. Background technique [0002] Post insulators are an important part of supporting wires and preventing current from returning to the ground in overhead transmission lines. In general overhead transmission lines such as power transmission, power distribution and substations, in order to protect electrical Overvoltage hazards must be equipped with lightning arresters on the lower cross arms of the insulators on the overhead transmission line poles. As a special overhead transmission line, the railway catenary is also equipped with lightning arresters in the railway catenary to ensure that electrical equipment is protected from instantaneous overvoltage hazards caused by lightning strikes on the conductors. In the electrified railway catenary, due to the thundercloud discharge along ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01C7/12H01C7/112H01C1/024H01C1/14H01B17/42H01B17/38H01B17/14
CPCH01B17/14H01B17/38H01B17/42H01C1/024H01C1/14H01C7/112H01C7/12
Inventor 钟帮建刘小兴王波
Owner 江西中南绝缘子有限公司
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