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Glass fiber impregnating resin wound-type composite insulator core and preparing method

A composite insulator and glass fiber technology, applied in the direction of insulators, suspension/strain insulators, electrical components, etc., can solve the problems of high tensile strength and poor bending strength of the mandrel, achieve low production costs, reduce the effective distance to the ground, Effect of Reliability Improvement

Active Publication Date: 2006-02-08
吴亚民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of mandrel has the defects that the glass fiber is stressed in one direction, so that the mandrel has high tensile strength and poor bending strength.

Method used

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  • Glass fiber impregnating resin wound-type composite insulator core and preparing method
  • Glass fiber impregnating resin wound-type composite insulator core and preparing method
  • Glass fiber impregnating resin wound-type composite insulator core and preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Take the resin-based impregnating composition by weight ratio, and the weight ratio of the composition is: epoxy resin: methyltetrahydrophthalic anhydride: S-440=90:85:1

[0031] ②. Melt the resin-based impregnating composition at a temperature of 20°C, and fully stir it at a speed of 150 rpm, and the resin base must not contain air bubbles;

[0032] ③. Put one end of the yarn splint fixed on the CNC winding machine through the resin-based glue tank to put the glass fiber epoxy winding yarn monofilament 3 into the melted resin-based solution, and then fix one end of the monofilament 3 to the metal ring 2 superior;

[0033] ④. Use the CNC winding machine to determine the center distance of the upper and lower metal rings and the diameter of the wound composite insulator mandrel 1 according to the customer's requirements for voltage level and tensile force. After programming the technical parameters, enter the CNC programming machine, and insulator core according to th...

Embodiment 2

[0035] 1. Take the resin-based impregnating composition by weight ratio, and the weight ratio of the composition is: epoxy resin: methyltetrahydrophthalic anhydride: S-440=95:90:1,

[0036] ②. Melt the resin base at a temperature of 25° C. and fully stir it evenly. The resin base must not contain air bubbles; other steps are the same as in Example 1

Embodiment 3

[0038] 1. Take the resin-based impregnating composition by weight ratio, and the weight ratio of the composition is: epoxy resin: methyltetrahydrophthalic anhydride: S-440=100:80:1,

[0039] ②. Melt the resin base at a temperature of 30°C and fully stir it evenly. The resin base must not contain air bubbles; other steps are the same as in Example 1

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PUM

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Abstract

The invention relates to a spiral-wound composite insulator bar for high-voltage transmission line in electric network and method for making same. The spiral-wound composite insulator bar has metal rings inlayed in its two ends. On the external diameter of metal rings wounded filaments, which are bound with, resinate glass fiber. The method comprises the steps of: getting some compound; melting resin; mixing melted glass fiber with resin solution and stirring with 150 turns per minute; enwinding continuously and modeling the glass fiber and epoxy resin radical solution in high temperature. The invention has the advantage of simple structure and low cost, of reducing tower's load and the effective distance from current transmission line to the earth. The spiral-wound composite insulator bar with cross wrap can meet the requirement of tensile strength, increasing bending strength.

Description

technical field [0001] The invention relates to an insulator mandrel for a power grid transmission line, and is especially suitable for a resin-based winding composite insulator mandrel impregnated with glass fiber and a preparation method thereof Background technique [0002] The existing insulator mandrels used in the transmission lines of high-voltage power grids at home and abroad are extruded and pultruded by epoxy resin-based impregnated glass fibers. The connection between the extruded mandrel and the fittings adopts the crimping process. In order to ensure that the mandrel and the metal sleeve are firmly connected to prevent falling off and to ensure the safe operation of the power grid, the crimping part of the metal sleeve is generally designed to be very long, so as to ensure the connection. Safety. However, there are insulators above 500KV. Due to the large volume of the metal sleeve, firstly, the steel increases the production cost, secondly, it increases the l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/38H01B17/04H01B19/00
Inventor 吴亚民
Owner 吴亚民
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