Method for determining hydrophobicity migration of silicone rubber umbrella skirt

A technology of hydrophobic mobility and measurement method, which is applied in the field of silicone rubber shed hydrophobic mobility measurement, can solve problems such as aging, surface hydrophobicity deterioration, and surface insulation strength drop, and achieve intuitive and accurate hydrophobicity mobility, The effect of eliminating adverse effects

Pending Publication Date: 2021-12-28
ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hydrophobicity is an important factor reflecting the aging of silicone rubber insulator sheds. Due to the influence of pollution, humidity, discharge, low temperature and other factors, the surface of composite insulators in operation will be seriously stained or aged, resulting in the change of surface hydrophobicity. poor insulation
In wet weather such as rainy weather, the surface insulation strength drops sharply, which is very likely to cause flashover along the surface, resulting in pollution flashover
Pollution flashover accidents often cause large-scale and long-term power outages, resulting in serious economic losses

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for measuring the hydrophobic mobility of silicone rubber sheds, comprising the following steps:

[0042] Step S1, selecting a variety of silicone rubber sheds with different formulas, different processes, and different umbrella shapes, and artificially aging the silicone rubber sheds for 500 hours according to the aging procedure of the standard IEC61109, to obtain aged silicone rubber sheds;

[0043] Step S2, select 3 corresponding positions in the line, hang one or more silicone rubber sheds for sampling for 35 days respectively to collect natural pollution, and each sampling point is separated by 1 km; remove the silicone rubber sheds for sampling, and obtain The natural pollution on the silicone rubber umbrella skirt is used for sampling to obtain the dirt to be tested;

[0044] Step S3, under the conditions of temperature 30°C and relative humidity 65%, conduct solubility analysis on the pollutant to be tested to obtain the content of soluble matter and i...

Embodiment 2

[0054] A method for measuring the hydrophobic mobility of silicone rubber sheds, comprising the following steps:

[0055] Step S1, selecting a variety of silicone rubber sheds with different formulas, different processes, and different umbrella shapes, and artificially aging the silicone rubber sheds for 500 hours according to the aging procedure of the standard IEC61109, to obtain aged silicone rubber sheds;

[0056] Step S2, select 5 corresponding positions in the line, hang one or more silicone rubber sheds for sampling for 45 days respectively to collect natural pollution, and each sampling point is separated by 5 kilometers; remove the silicone rubber sheds for sampling to obtain The natural pollution on the silicone rubber umbrella skirt is used for sampling to obtain the dirt to be tested;

[0057] Step S3, under the conditions of temperature 35°C and relative humidity 70%, carry out solubility analysis on the filth to be tested to obtain soluble content and insoluble c...

Embodiment 3

[0067] A method for measuring the hydrophobic mobility of silicone rubber sheds, comprising the following steps:

[0068] Step S1, selecting a variety of silicone rubber sheds with different formulas, different processes, and different umbrella shapes, and artificially aging the silicone rubber sheds for 500 hours according to the aging procedure of the standard IEC61109, to obtain aged silicone rubber sheds;

[0069] Step S2, select 4 corresponding positions in the line, hang one or more silicone rubber sheds for sampling for 40 days respectively to collect natural pollution, and each sampling point is separated by 3 kilometers; remove the silicone rubber sheds for sampling to obtain The natural pollution on the silicone rubber umbrella skirt is used for sampling to obtain the dirt to be tested;

[0070] Step S3, under the conditions of temperature 32°C and relative humidity 68%, carry out solubility analysis on the pollutant to be tested to obtain the content of soluble matt...

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Abstract

The invention relates to a method for determining hydrophobicity migration of silicone rubber umbrella skirts, which comprises the following steps: selecting various silicone rubber umbrella skirts with different formulas, different processes and different umbrellas, carrying out artificial aging on the silicone rubber umbrella skirts for 500 hours, washing off dirt on the surfaces of the silicone rubber umbrella skirts, then taking imitated natural dirt for dirt coating, selecting a plurality of brand-new silicone rubber umbrella skirts which are not artificially aged for 500 hours and have different formulas, different processes and different umbrellas for coating, and then carrying out hydrophobicity experiments on the first to-be-tested silicone rubber umbrella skirt and the second to-be-tested silicone rubber umbrella skirt; so that the hydrophobic migration performance change condition of the silicone rubber umbrella skirt before and after 500-hour artificial aging can be intuitively and accurately judged, and the silicone rubber material suitable for the silicone rubber umbrella skirt in the southern coastal area can be selected. compared with the prior art, the method has the advantages that the hydrophobicity experiment is not directly carried out after 500 hours of artificial aging, the adverse influence of environmental factors can be eliminated, and the hydrophobicity migration of the silicone rubber umbrella skirt can be intuitively and accurately measured.

Description

technical field [0001] The invention relates to the technical field of hydrophobic mobility detection, in particular to a method for measuring the hydrophobic mobility of silicone rubber sheds. Background technique [0002] The silicone rubber composite insulator is composed of a shed sheath made of high temperature vulcanized silicone rubber, a glass fiber reinforced epoxy resin mandrel and end fittings. A large number of research results at home and abroad show that compared with traditional porcelain and glass insulators, composite insulators have significant advantages in anti-pollution flashover performance. Its superior anti-fouling flashover properties benefit from many factors, but it is mainly attributed to the good hydrophobicity and unique hydrophobic transfer property of the outer insulating material silicone rubber: hydrophobicity refers to Silicone rubber material has low surface tension, and the moisture adsorbed on its surface exists in the form of discontin...

Claims

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Application Information

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IPC IPC(8): G01N13/00
CPCG01N13/00G01N2013/003
Inventor 边美华彭家宁刘桂婵卢展强张兴森杨艺云李君华梁世容
Owner ELECTRIC POWER RES INST OF GUANGXI POWER GRID CO LTD
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