Shed material of composite insulator

A composite insulator and shed technology, applied in the field of composite insulator shed materials, can solve the problems of packaging, transportation, installation, operation and maintenance difficulties, long composite insulator structure height, uneven potential distribution, etc. performance, improve hydrophobicity, easy to cure and form the effect

Inactive Publication Date: 2013-10-02
甘肃省电力公司检修公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is due to the fact that composite insulators have many advantages, but there are also some problems: First, the silicone rubber shed sheath currently used is relatively soft in texture. Because the insulator has been in the field for a long time, it is affected by bad weather and the environment. The silicone rubber shed sheath on the outer surface is very easy to damage and damage the sealing performance, resulting in a decrease in insulation performance; second, the long rod-shaped structure of the composite insulator makes the yield low, making packaging, transportation, installation and operation and maintenance difficult, and Potential distribution is not uniform, if there is damage, the whole root must be replaced, which will increase the maintenance cost
The above problems are not obvious on general high-voltage transmission lines, but for ultra-high-voltage and ultra-high-voltage transmission lines, due to the high requirements on the system insulation level, the structural height of composite insulators is generally long, and these problems must be solved

Method used

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  • Shed material of composite insulator
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 1. First mix 50 grams of nitrile rubber with 300 grams of bisphenol A epoxy resin to obtain 350 grams of flexible epoxy resin, weigh 700 grams of bisglycidyl hexahydrophthalate and the flexible epoxy resin 300 grams get 1000 grams of A component; Acrylonitrile content is 16wt% in the nitrile rubber;

[0025] 2. Weigh 1,000 grams of methyl hexahydrophthalic anhydride as a curing agent and 30 grams of 2,4,6-tris(dimethylaminomethyl)phenol as an accelerator to obtain 1,030 grams of component B;

[0026] 3. Take by weighing 3500 grams of silicon dioxide as a filler, 30 grams of 4-dihydroxybenzophenone as an ultraviolet absorber, 15 grams of magnesium stearate as a stabilizer, and 20 grams of magnesium hydroxide as a flame retardant. gram, 10 grams of γ-glycidyl ether oxypropyltrimethoxysilane as coupling agent, get 3575 grams of C component; This silicon dioxide comprises the particle of 38 microns of 5wt%

Embodiment 2

[0028] Example 2 1. First, mix 54 grams of carboxy-terminated nitrile rubber with 300 grams of bisphenol A diglycidyl ether to obtain 354 grams of flexible epoxy resin, and weigh 4,5-epoxycyclohexane-1,2- 2 800 grams of diglycidyl diformate and 200 grams of flexible epoxy resin get 1000 grams of A component; Acrylonitrile content is 12wt% in the carboxyl-terminated nitrile rubber;

[0029] 2. Weigh 1100 grams of methyl hexahydrophthalic anhydride as a curing agent and 45 grams of dimethylaniline as an accelerator to obtain 1145 grams of component B;

[0030] 3. Take by weighing 2000 grams of silicon dioxide as a filler, 10 grams of 4-dihydroxybenzophenone as an ultraviolet absorber, 5 grams of zinc stearate as a stabilizer, and 15 grams of aluminum hydroxide as a flame retardant. gram, 10 grams of gamma-methacryloxypropyltrimethoxysilane as coupling agent, get 2040 grams of C component; All the other are with embodiment 1

[0031] 4. When pouring the insulator shed mold; mix ...

Embodiment 3

[0033] 1. First mix 30 grams of carboxyl-terminated nitrile rubber with 200 grams of bisphenol A diglycidyl ether to prepare 230 grams of flexible epoxy resin, and weigh 4,5-epoxycyclohexane-1,2-2 dicarboxylic acid 850 grams of diglycidyl ester and 150 grams of flexible epoxy resin get 1000 grams of A component; Acrylonitrile content is 21wt% in the carboxyl-terminated nitrile rubber,

[0034]2. Weigh 1150 grams of methyl hexahydrophthalic anhydride as a curing agent and 50 grams of dimethylaniline as an accelerator to obtain 1200 grams of component B;

[0035] 3. Take by weighing 3000 grams of aluminum hydroxide as a filler, 24 grams of 4-dihydroxybenzophenone as an ultraviolet absorber, 16 grams of zinc stearate as a stabilizer, and 10 grams of magnesium hydroxide as a flame retardant. gram, 10 grams of β-(3,4-epoxycyclohexylethyl) trimethoxysilane as coupling agent, get 3060 grams of C component; All the other are with embodiment 1

[0036] 4. When pouring the insulator um...

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Abstract

The invention relates to a shed material of a composite insulator. The shed material is made from the following raw materials in parts by weight: 100 parts of component A, 80-120 parts of component B and 200-400 parts of component C, wherein the component A comprises diglycidyl cyclohexane dicarboxylate and flexible epoxy resin in the weight ratio of (70-90):(30-10); the component B comprises a curing agent and an accelerator in the weight ratio of 100:(1-5); and the component C comprises at least one of silicon dioxide or aluminium hydroxide. The shed material of the composite insulator, provided by the invention, is not prefabricated and is fabricated on site when pouring the shed mould of the insulator in the process of fabricating the insulator. The shed sheath of the composite insulator, fabricated by adopting the material provided by the invention, has the advantages of good toughness, tread resistance, difficulty in damage and good sealing property.

Description

technical field [0001] The invention relates to a shed material for a composite insulator of a power transmission line, in particular to a shed material for a composite insulator suitable for an ultra-high voltage transmission line. Background technique [0002] With the continuous improvement of my country's transmission voltage level, rod-shaped suspension composite insulators have been widely used as a new generation of transmission line insulators in my country's power grid, especially in heavily polluted areas. The mainstream product of rod-shaped suspension composite insulators uses silicone rubber shed sheath as the outer insulation. Although the manufacturing and use technologies are relatively mature, they are still being updated and developed. This is due to the fact that composite insulators have many advantages, but there are also some problems: First, the silicone rubber shed sheath currently used is relatively soft in texture. Because the insulator has been in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L63/02C08L13/00C08K5/1515C08K3/36C08K3/22C08K3/02
Inventor 张子龙陈坚强杨郭明马军孔晨华陈旭兵翟耀乾秦玉天刘自云胡海明
Owner 甘肃省电力公司检修公司
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