How to use silicone oil detector, power terminal assembly and silicone oil detector

A power terminal and detector technology, applied in the field of silicone oil detectors, can solve the problems that the resistance change of the conductive layer is not very fast and significant, it is difficult to detect oil leakage of high-voltage cable accessories in time, and the oil leakage alarm is not timely, so as to facilitate observation. and treatment, convenient oil leakage phenomenon, easy to use effect

Active Publication Date: 2016-06-01
TYCO ELECTRONICS (SHANGHAI) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) When the oil leakage wraps the conductive particles, the resistance change of the conductive layer is not very fast and significant. Therefore, the detection sensitivity is not enough, and it is easy to cause the oil leakage alarm to be untimely, and it is difficult to detect the oil leakage in the high-voltage cable fittings in time. Thus there is a hidden danger of serious power failure caused by oil leakage;
[0005] 2) When rainwater or other liquids drip onto the conductive layer, it will also change the resistance of the conductive layer. Therefore, when used outdoors, a special protective film that is waterproof but oil-permeable must be provided on the conductive layer , therefore, the structure is complex and the cost is high

Method used

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  • How to use silicone oil detector, power terminal assembly and silicone oil detector
  • How to use silicone oil detector, power terminal assembly and silicone oil detector
  • How to use silicone oil detector, power terminal assembly and silicone oil detector

Examples

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Effect test

example 1

[0043] Use liquid silicone rubber containing conductive carbon black to coat a thin film on the two electrodes and between the two electrodes, place it in an oven and raise the temperature to 160°C to cure for 2 hours, and then cool to room temperature. A silicone rubber coating containing 11.9 wt% conductive carbon black was obtained.

[0044] The resistance between the measuring electrodes was stable at 7.98kΩ at room temperature. Add a drop of silicone oil to the silicone rubber on the electrode, within half an hour, the resistance rises from 7.98kΩ to 12.45kΩ and remains stable. The resistance value increased by 56.0%.

example 2

[0046] Use liquid silicone rubber containing conductive carbon black to coat a thin film on the two electrodes and between the two electrodes, place it in an oven and raise the temperature to 160°C to cure for 2 hours, and then cool to room temperature. A silicone rubber coating containing 20.6% by weight of conductive carbon black was obtained.

[0047] The resistance between the measuring electrodes is stable at 1.75kΩ at room temperature. Add a drop of silicone oil to the silicone rubber on the electrode, within half an hour, the resistance rises from 1.75kΩ to 2.86kΩ and remains stable. The resistance value increased by 63.4%.

example 3

[0049] Coat a layer of thin film on and between the two electrodes with liquid silicone rubber containing silver powder, place in an oven and heat up to 160°C, keep warm for 2 hours to solidify, and then cool to room temperature. A conductive silicone rubber coating containing 80.2% by weight of silver powder was obtained.

[0050] The resistance between the measuring electrodes at room temperature is 0.21 kΩ. When a drop of silicone oil drops on the silicone rubber, within half an hour, the resistance increases from 0.21kΩ to 0.41kΩ and remains stable. The resistance value increased by 95.2%.

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Abstract

The invention relates to a silicon oil detector, a power terminal assembly and a method for using the silicon oil detector. A silicone oil detector is disclosed, comprising a conductive layer, the conductive layer uses an organic silicon polymer material as a matrix material, and conductive particles are added to the organic silicon polymer material, and when the conductive layer contacts silicone oil, the The silicone polymer material described above will swell, resulting in an increase in the electrical resistance of the conductive layer. The invention utilizes that when the organic silicon polymer-based conductive layer contacts silicone oil, the organic silicon polymer will swell rapidly, so that the resistance of the organic silicon polymer-based conductive layer changes abruptly, and an alarm signal is issued according to the change of resistance. The silicone oil detector of the present invention has the characteristics of strong response signal, fast response and long-lasting response, and is convenient for discovering oil leakage phenomenon in time. Moreover, this silicone polymer-based silicone oil detector is not affected by water, so it is suitable for outdoor use.

Description

technical field [0001] The invention relates to a silicone oil detector, in particular to a silicone oil detector used for detecting silicone oil leaked from an outdoor power terminal filled with silicone oil. Background technique [0002] High-voltage outdoor power terminals filled with silicone oil can be used in 170kV high-voltage engineering fields, for example, oil-filled high-voltage cable fittings. However, sometimes these outdoor power terminals are at risk of oil leaks which can lead to serious electrical failures. Simultaneously, because these outdoor power terminals are often installed in the position very high from the ground, these oil leakage phenomena are difficult to be discovered in time. [0003] In the existing detectors for detecting oil leakage, it is generally detected whether there is an oil leakage phenomenon based on the characteristic that the oil leakage wraps the surface of the conductive particles so that the resistance of the conductive layer c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/04
CPCG01N27/12G01M3/045G01N27/20G01N27/126
Inventor 高婷黄忠喜杨立章伍静
Owner TYCO ELECTRONICS (SHANGHAI) CO LTD
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