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A pressure-resistant, wear-resistant and corrosion-resistant transformer sealing ring and its production method

A technology for transformers and sealing rings, which is applied in the fields of corrosion-resistant transformer sealing rings, wear resistance, and pressure resistance. It can solve problems such as difficulty in meeting the long-term operation needs of transformers, high temperature and corrosion of transformer oil, and short service life of rubber sealing tapes. Good insulation, good plasticity and high hiding power

Active Publication Date: 2015-11-18
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the invention patent with the application number 201010533517.9 authorized on July 4, 2012 provides a method for making transformer sealant strips. The interface often breaks due to long-term pressure, and is susceptible to high temperature and corrosion of transformer oil. The service life of ordinary rubber sealing tape is short, which is difficult to meet the long-term operation needs of transformers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A pressure-resistant, wear-resistant and corrosion-resistant transformer sealing ring, made from the following raw materials in proportion by weight: 80 parts of nitrile rubber, 20 parts of carbon black, 35 parts of ceramic micropowder, 10 parts of silicon powder, and 15 parts of manganese powder , 10 parts of high-strength reclaimed rubber, 10 parts of polytetrafluoroethylene, 10 parts of zinc oxide, 10 parts of coumarone resin, 7 parts of rubber oil, 5 parts of clay, 5 parts of vulcanization activator, 1 part of anti-thermal oxygen aging anti-aging agent . Its production method comprises the following steps:

[0018] 1) Blank making: take the nitrile rubber, high-strength reclaimed rubber and coumarone resin of the stated weight parts to synthesize rubber in an internal mixer, and then add other raw materials of the stated weight parts to carry out kneading in an open mill Forming to obtain a ring-shaped blank suitable for the structure of the transformer to be seale...

Embodiment 2

[0023] A pressure-resistant, wear-resistant and corrosion-resistant transformer seal ring, made from the following raw materials in proportion by weight: 85 parts of nitrile rubber, 25 parts of carbon black, 40 parts of ceramic micropowder, 15 parts of silicon powder, and 20 parts of manganese powder 15 parts of high-strength reclaimed rubber, 12 parts of polytetrafluoroethylene, 12 parts of zinc oxide, 12 parts of coumarone resin, 9 parts of rubber oil, 7 parts of clay, 6 parts of vulcanization activator, 3 parts of anti-thermal and oxygen aging anti-aging agent .

[0024] Its production method, with embodiment one.

Embodiment 3

[0026] A pressure-resistant, wear-resistant and corrosion-resistant transformer seal ring, made from the following raw materials in proportion by weight: 88 parts of nitrile rubber, 26 parts of carbon black, 50 parts of ceramic micropowder, 22 parts of silicon powder, and 21 parts of manganese powder 18 parts of high-strength reclaimed rubber, 14 parts of polytetrafluoroethylene, 13 parts of zinc oxide, 12 parts of coumarone resin, 10 parts of rubber oil, 8 parts of clay, 7 parts of vulcanization activator, 4 parts of anti-heat and oxygen aging anti-aging agent .

[0027] Its production method, with embodiment one.

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PUM

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Abstract

The invention discloses a compression-resistant, abrasion-resistant and corrosion-resistant transformer seal ring as well as a production method thereof. Chemigum is adopted as a main raw material, and forms synthetic rubber with high-tenacity reclaimed rubber and coumarone resin, and the synthetic rubber has extremely good oil resistance, abrasion resistance and thermal resistance; the synthetic rubber is matched with carbon black, ceramic micro powder, silicon powder, manganese powder, teflon, zinc oxide, argil, vulcanizing activators and hot-oxygen aging resistant agents, so that the performance of tearing resistance, self-lubricating effect, compression deformation resistance, thermal resistance, corrosion resistance, abrasion resistance and the like of the seal ring can be improved effectively, and the service life of the seal ring is prolonged. The favorable seal effect can be protected in severe cold and hot climate environments, and the service life of the seal ring is more than twice that of a traditional seal ring.

Description

technical field [0001] The invention relates to the technical field of transformer sealing, in particular to a pressure-resistant, wear-resistant and corrosion-resistant transformer sealing ring and a production method thereof. Background technique [0002] Since transformer oil is usually used in the transformer to cool down the temperature of the transformer, the seal between the transformer oil tank and the casing and the transformer cover is very important. Traditional transformer annular rubber seals usually use a strip-shaped sealing rubber row to connect the two The quality of the rubber row and the sealing quality of the rubber row interface directly affect the sealing performance of the transformer. For example, the invention patent with the application number 201010533517.9 authorized on July 4, 2012 provides a method for making transformer sealant strips. The interface often breaks due to long-term pressure, and is susceptible to high temperature and corrosion of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/02C08L17/00C08L27/18C08L45/02C08K13/02C08K3/04C08K3/02C08K3/08C08K3/22C08K3/36
Inventor 智全中陈宏伟曹建奎张亮
Owner STATE GRID CORP OF CHINA
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