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Sectional extra-high-voltage composite post insulator with inner umbrella structure

A composite insulator, segmented technology, applied in the field of segmented UHV pillar composite insulators, can solve the problems of poor internal insulation performance, limited mechanical strength, insufficient mechanical strength, etc.

Active Publication Date: 2011-04-06
DONGGUAN GAONENG IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the glass fiber epoxy resin mandrel is used as a support to bear the mechanical load, but the diameter of the glass fiber epoxy resin mandrel cannot be enlarged arbitrarily, the mechanical strength it can bear is limited, and the inner wall is prone to conduction after moisture absorption.
Therefore, this kind of insulator has the problems of insufficient mechanical strength and poor internal insulation performance; zero point, etc., so the requirements for the leakage distance of the external insulation are very strict
In order to satisfy UHV DC transmission insulators with a sufficiently large external insulation leakage distance, a structural height that meets the requirements must be selected, so that the length of UHV DC transmission post composite insulators is basically not less than 11 meters, and the weight reaches more than 100 kg. There are many difficulties in the process of transportation, installation and maintenance

Method used

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  • Sectional extra-high-voltage composite post insulator with inner umbrella structure
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  • Sectional extra-high-voltage composite post insulator with inner umbrella structure

Examples

Experimental program
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Embodiment 1

[0038] Embodiment 1 of the segmented UHV pillar composite insulator with inner shed structure of the present invention is as follows figure 1 , figure 2 , image 3 and 4 As shown, it includes a first composite insulator assembly 1, a second composite insulator assembly 2, a third composite insulator assembly 3 and a fourth composite insulator assembly 4 connected in series through flanges, the first composite insulator assembly 1, the second composite insulator assembly The insulator assembly 2, the third composite insulator assembly 3 and the fourth composite insulator assembly 4 respectively include: a hollow insulating tube 10, an upper flange 11 and a lower flange 12 set at both ends of the hollow insulating tube 10, the hollow insulating tube 10 is wound into a tubular shape by glass fiber epoxy resin, which plays the role of internal insulation and withstands mechanical bending, pressure and torsion. The outer wall of the hollow insulating tube 10 between the upper fl...

Embodiment 2

[0044] Embodiment 2 of the segmented UHV post composite insulator with inner shed structure of the present invention is as follows figure 1 , figure 2 , image 3 and 4 As shown, the two ends of the first composite insulator assembly 1 are respectively provided with a first voltage equalizing ring 101 and a second voltage equalizing ring 102, and the first voltage equalizing ring 101 and the second voltage equalizing ring 102 are respectively fixed on the upper side by the bracket 9. Flange 11 and lower flange 12; the two ends of the second composite insulator assembly 2 are respectively provided with a third pressure equalizing ring 201 and a fourth pressure equalizing ring 202, and the third pressure equalizing ring 201 and the fourth pressure equalizing ring 202 pass through The bracket 9 is respectively fixed on the upper flange 11 and the lower flange 12; the two ends of the third composite insulator assembly 3 are respectively provided with a fifth equalizing ring 301 ...

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Abstract

The invention relates to a sectional extra-high-voltage composite post insulator with an inner umbrella structure. The composite post insulator comprises a first composite insulator component, a second composite insulator component, a third composite insulator component and a fourth composite insulator component which are successively connected in series through flanges; each composite insulator component contains a hollow insulation pipe, and an upper flange and a lower flange which are sleeved on the both ends of the hollow insulation pipe; the glass epoxy material is wound to obtain the hollow insulation pipe; the outer umbrella prepared from high temperature vulcanized silicone rubber is formed on the outer wall of the hollow insulation pipe through overall injection; the inner wall of the hollow insulation pipe is provided with an inner umbrella which is an annular glass fibre board; and a silicone rubber layer is covered on the outer surface of the annular glass fibre board. The invention has the advantages of high mechanical strength, high pollution flashover resistance and convenient methods of installation and transportation.

Description

technical field [0001] The invention relates to the technology of insulators for high-voltage transmission lines, in particular to a segmented UHV post composite insulator with an inner shed structure. Background technique [0002] In the prior art, the post insulator is a special insulation control, which supports the substation equipment in the substation and has corresponding electromechanical performance. According to different insulating materials, insulators can be divided into porcelain insulators, glass insulators and composite insulators. Among them, compared with porcelain insulators and glass insulators, composite insulators are lighter in weight, have excellent anti-pollution performance and better mechanical strength. [0003] The high-voltage post composite insulators in the prior art are generally composed of a mandrel, connecting fittings at both ends of the mandrel and an outer sheath sheath. The mandrel is generally a solid mandrel drawn or wound with glas...

Claims

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Application Information

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IPC IPC(8): H01B17/14H01B17/36H01B17/48
Inventor 黄洪赵天任何庆文张海兵魏强华许文荣魏会文胡振王如彪杜达华李悦惠强曹轩朱剑波罗寅肖金云黄肖霞韦伟
Owner DONGGUAN GAONENG IND CO LTD
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