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A method for extracting particulate matter from transformer oil

A transformer oil and particulate matter technology, applied in the direction of lubricating compositions, etc., can solve the problems of unsatisfactory treatment effect, high viscosity of transformer oil, and increased cost, etc., and achieve the effect of simple and easy component testing

Active Publication Date: 2017-09-29
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high viscosity of transformer oil, this solution mainly uses a heater to heat the oil, but the cost increases, and it is difficult for the oil to maintain a certain temperature after passing through a long pipeline, so the treatment effect is not ideal

Method used

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  • A method for extracting particulate matter from transformer oil
  • A method for extracting particulate matter from transformer oil

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Experimental program
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Effect test

Embodiment 1～4

[0020] A method for extracting particulate matter from transformer oil:

[0021] Step 1: Take petroleum ether and filter it through a filter membrane with a pore size of 0.22 μm for later use;

[0022] Step 2: Heat the transformer oil at 60°C, take it out after 30 minutes, record the quality, and fully mix it with petroleum ether at a ratio of 1:1 to reduce the viscosity and obtain better fluidity;

[0023] Step 3: Place a pre-constant 0.45 μm filter membrane on the suction filter device and clamp it;

[0024] Step 4: Pour the mixture of transformer oil and petroleum ether into the upper cup of the suction filtration device for suction filtration:

[0025] Step 5: After the filtration is completed, rinse the upper cup with petroleum ether and volatilize the petroleum ether;

[0026] Step 6: The constant weight filter membrane records the mass and converts the content of particulate matter, and the particulate matter on the filter membrane can be further tested for compositio...

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Abstract

The invention relates to a method for extracting particulates in transformer oil. The method comprises: mixing petroleum ether and transformer oil according to a volume ratio of 1:1, and extracting particulates after being filtered by a suction filter device. Compared with the prior art, the present invention can measure the total amount of particles as small as 0.45 μm in transformer oil, rather than the distribution of particle size; this method selects the filter membrane of 0.45 μm as the material above the pore size in the intercepted oil, and passes through the oil After washing with ether, the composition test after particulate matter can be more simple and easy.

Description

technical field [0001] The invention relates to the treatment of transformer oil, in particular to a method for extracting particulate matter in transformer oil. Background technique [0002] Pure transformer oil has good insulation performance, if there are impurities, its insulation performance will be greatly reduced. When there are large metal particles in the transformer oil, although the number is small, compared with the small particles, the impact on the insulation performance of the transformer oil is more serious. Large particles under the action of electric field in oil are one of the main factors for generating partial discharge. [0003] When oil-filled electrical equipment has abnormal operating conditions such as overheating or discharge, the metal of the relevant components will be corroded and melted in the oil, resulting in an increase in the metal content and particle size in the oil. When the metal content or particle impurities in the oil are too much,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M175/00
Inventor 厉敏宪彭伟熊鸣翔
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO