Silicon rubber insulator repair method

A technology of silicone rubber insulation and repair method, applied in the direction of insulation/armored cable repair equipment, etc., can solve problems such as waste of silicone rubber insulators, and achieve the effects of reducing serious waste, solving cracks, and extending service life

Inactive Publication Date: 2017-09-22
CHINA SHENHUA ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a silicone rubber insulator repair method in order to overcome the serious waste of silicone rubber insulators in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Clean the surface of the aging silicone rubber insulator with alcohol to remove the surface dust and make the cracks clearly visible;

[0027] (2) Mix EPDM rubber and silicone rubber in a weight ratio of 1:1, stir at 25°C for 60 minutes, use the obtained mixture to repair the surface defect of the silicone rubber insulator, and use a metal scraper to repair the surface, Make the repaired surface and the original silicone rubber insulator surface smooth and dry for 15 minutes;

[0028] (3) Mix EPDM rubber and silicone rubber in a weight ratio of 4:1, stir at 25°C for 60 minutes, put the obtained mixture into a pneumatic watering can, and use the pneumatic watering can to spray the silicone rubber insulator The surface is sprayed, sprayed three times, with an interval of 5 minutes each time, so that the thickness of the coating is 1mm.

Embodiment 2

[0030] (1) Clean the surface of the aging silicone rubber insulator with alcohol to remove the surface dust and make the cracks clearly visible;

[0031] (2) Mix EPDM rubber and silicone rubber at a weight ratio of 2:1, stir at 25°C for 30 minutes, use the obtained mixture to repair the surface defect of the silicone rubber insulator, and use a metal scraper to repair the surface, Make the repaired surface and the original silicone rubber insulator surface smooth and dry for 30 minutes;

[0032] (3) Mix EPDM rubber and silicone rubber at a weight ratio of 6:1, stir at 25°C for 30 minutes, put the resulting mixture into a pneumatic watering can, and use the pneumatic watering can to spray the silicone rubber insulator The surface is sprayed, sprayed three times with an interval of 10 minutes each time, so that the thickness of the coating is 0.5mm.

Embodiment 3

[0034] (1) Clean the surface of the aging silicone rubber insulator with alcohol to remove the surface dust and make the cracks clearly visible;

[0035] (2) Mix EPDM rubber and silicone rubber at a weight ratio of 1.5:1, stir at 25°C for 60 minutes, use the obtained mixture to repair the surface defect of the silicone rubber insulator, and use a metal scraper to repair the surface, Make the repaired surface and the original silicone rubber insulator surface smooth and dry for 20 minutes;

[0036] (3) Mix EPDM rubber and silicone rubber at a weight ratio of 5:1, stir at 25°C for 60 minutes, put the resulting mixture into a pneumatic watering can, and use the pneumatic watering can to spray the silicone rubber insulator The surface is sprayed, sprayed three times, each interval is 3 minutes, so that the thickness of the coating is 0.2mm.

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PUM

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Abstract

The invention relates to the field of an insulator, and discloses a silicon rubber insulator repair method. The silicon rubber insulator repair method is characterized by comprising the following steps of: (1) cleaning dust on the surface of the silicon rubber insulator; and (2) coating a high-voltage resistance insulating sealing material, wherein the high-voltage resistance insulating sealing material is a mixture of ethylene-propylene-diene-terpolymer rubber and organic silicon rubber. According to the method disclosed by the invention, an aged silicon rubber insulator can have a high withstand voltage again, and electrical performance of the aged silicon rubber insulator sufficiently meets application requirements.

Description

technical field [0001] The invention relates to the field of insulators, in particular to a method for repairing silicone rubber insulators. Background technique [0002] The power unit of the rail transit manufacturing industry needs power supply from an external power grid. The pantograph and inverter technology provide stable energy to drive the motor to provide power for locomotives and EMUs. The power supply and transformation system uses a large number of silicone rubber insulators, and the roof silicone rubber insulators are in operation. Unavoidable to withstand atmospheric environmental aging factors such as sunlight, condensation, pollution, bird damage, ice and snow, high humidity, temperature difference and harmful substances in the air, and electrical aging factors such as strong electric field, lightning impulse current, power frequency arc and current, and long-term work Due to the accelerated aging effect of mechanical aging factors such as load, comprehensiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/16
CPCH02G1/16
Inventor 康凤伟李权福辛民李康民尤昕宇蔡梦霖成凤麒
Owner CHINA SHENHUA ENERGY CO LTD
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