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Insulation paper used for high-overload transformer

A technology for transformers and insulating paper, applied in insulators, insulators, organic insulators, etc., can solve the problems of heat resistance and breakdown voltage difference of polyester film, affecting service life, etc., and achieve the effect of good thermal stability

Active Publication Date: 2016-04-27
NANTONG RIZHI ELECTRIC STUFF CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the polyester film has poor heat resistance and breakdown voltage, which affects its service life

Method used

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  • Insulation paper used for high-overload transformer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides the composition and preparation method of insulating paper for high overload transformers

[0031] The base paper of insulating paper for high overload transformers is made of high-purity insulating wood pulp fiber after adding 3% melamine. Composed of 5 parts of glycerol ether resin, 5 parts of dicyandiamide, 2 parts of diaminodiphenyl sulfone, and 2 parts of accelerator.

Embodiment 2

[0033] The base paper of insulating paper for high overload transformers is made of high-purity insulating wood pulp fiber after adding 2% of dicyandiamide, and the glue layer is made of 60 parts of phenolic epoxy resin, 10 parts of flexible epoxy resin, poly 10 parts of alcohol diglycidyl ether resin, 10 parts of dicyandiamide, 8 parts of diaminodiphenyl sulfone, and 6 parts of accelerator.

Embodiment 3

[0035] The base paper of insulating paper for high overload transformers is made of high-purity insulating wood pulp fiber after adding 5% polyacrylamide. 20 parts of diglycidyl ether resin, 20 parts of dicyandiamide, 10 parts of diaminodiphenyl sulfone, and 8 parts of accelerator.

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Abstract

The invention discloses an insulation paper used for a high-overload transformer. The insulation paper comprises base paper and a cementing layer and is characterized in that the base paper consists of high-purity insulation wood pulp fibers, and the cementing layer consists of modified epoxy resin. The insulation paper used for the high-overload transformer has good thermostability, mechanical performance and electrical performance.

Description

technical field [0001] The present disclosure generally relates to the field of insulating paper, and in particular relates to insulating paper for high overload transformers. Background technique [0002] The high-overload oil-immersed transformer is a new type of voltage transformer developed by the China Electric Power Research Institute, which was established by the Ministry of Agriculture and Electricity of the State Grid. In terms of insulating materials, high-density dispensing paper was originally used. When the load of the transformer increases significantly, the transformer is prone to Overload burns, and there is a situation of low voltage. [0003] Later, some research institutes used NOMEX paper produced by DuPont in the United States as the interlayer insulation. Due to the smooth surface of the material, the difficulty of manufacturing, the high production cost, the difficulty of recycling in the later stage, and the fact that it is not conducive to environmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/60H01B3/42H01F27/32B32B27/36B32B27/38
CPCB32B27/36B32B27/38H01B3/421H01B17/60H01F27/32
Inventor 周顺奎任桂军闾传瑞
Owner NANTONG RIZHI ELECTRIC STUFF CO LTD