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A kind of heat conduction transformer oil and preparation method thereof

A technology for transformer oil and base oil, applied in the field of transformer oil, can solve the problems of limited thermal conductivity and difficulty in further improving the thermal conductivity of transformer oil, and achieve the effects of improving thermal conductivity, good development prospects and overcoming adverse effects.

Inactive Publication Date: 2021-06-22
RONGCHENG POWER SUPPLY CO STATE GRID SHANDONG ELECTRIC POWER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, it is common in the prior art to use semiconductor and metal oxide insulating materials as nano-additives in transformer oil, but the thermal conductivity of such semiconductor and metal oxide insulating materials is limited, and generally can only improve the thermal conductivity of transformer oil. More than 10%, it is difficult to further improve the thermal conductivity of transformer oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of modified aluminum alloy nanoparticles: 1) The aluminum alloy nanoparticles are pretreated in a sodium hydroxide solution with a pH value of 11 for 2 minutes, washed and dried after filtration to obtain pretreated aluminum alloy nanoparticles; 2) The pretreated aluminum alloy nanoparticles are immersed in a surface treatment solution for 5min. In the surface treatment solution, the concentration of potassium fluorosilicate is 10g / L, the concentration of potassium permanganate is 0.5g / L, and the concentration of potassium titanium oxalate is The concentration of 2g / L, nonylphenol polyoxyethylene ether 0.5g / L, the pH value of the surface treatment solution is 4.5, after filtration, washed and dried to obtain surface-treated aluminum alloy nanoparticles; 3) Step 2 ) the obtained surface-treated aluminum alloy nanoparticles are processed by the ethanol solution of the silane coupling agent, and the mass ratio of the surface-treated aluminum alloy nanoparticles ...

Embodiment 2

[0025] Preparation of modified aluminum alloy nanoparticles: 1) The aluminum alloy nanoparticles were pretreated in a potassium hydroxide solution with a pH value of 11 for 3 minutes, washed and dried after filtration to obtain pretreated aluminum alloy nanoparticles; 2) The pretreated aluminum alloy nanoparticles are dipped in a surface treatment solution for 20 min, and the surface treatment solution includes potassium fluorosilicate, potassium permanganate, potassium titanium oxalate, and nonionic polyacrylamide. The pH value is 5, after filtration, washing and drying to obtain surface-treated aluminum alloy nanoparticles; 3) the surface-treated aluminum alloy nanoparticles obtained in step 2) are treated with an ethanol solution of a silane coupling agent, and then surface-treated The mass ratio of the aluminum alloy nanoparticles and absolute ethanol is 1:30; the mass ratio of the surface-treated aluminum alloy nanoparticles to the silane coupling agent is 1:1 and after ul...

Embodiment 3

[0028] Preparation of modified aluminum alloy nanoparticles: 1) The aluminum alloy nanoparticles were pretreated in an aqueous ammonia solution with a pH value of 13 for 0.5 min, washed and dried after filtration to obtain pretreated aluminum alloy nanoparticles; 2 ) immersing the pretreated aluminum alloy nanoparticles in a surface treatment solution for 30min, the surface treatment solution includes sodium fluorosilicate, potassium permanganate, potassium titanium oxalate, nonionic polyacrylamide, the pH of the surface treatment solution The value is 6, after filtration, washing and drying to obtain surface-treated aluminum alloy nanoparticles; 3) the surface-treated aluminum alloy nanoparticles obtained in step 2) are treated with an ethanol solution of a silane coupling agent, and the surface-treated aluminum alloy nanoparticles are treated with The mass ratio of aluminum alloy nanoparticles to absolute ethanol is 1:40; the mass ratio of surface-treated aluminum alloy nanop...

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Abstract

A heat-conducting transformer oil, comprising base oil, 0.001-20wt% modified aluminum alloy nanoparticles, the particle diameter of the modified aluminum alloy nanoparticles is 1-500 nanometers; A protective layer of metal oxide and inorganic salt is formed on the surface of the alloy through chemical reaction; the aluminum alloy contains at least 50wt% aluminum, more preferably more than 70wt% aluminum. The aluminum alloy also includes one or more of Ti, Mn and Cr. The nano-particle modified transformer oil significantly improves the thermal conductivity of the transformer oil, and at the same time overcomes the adverse effect of the addition of nano-metals on the electrical insulation performance of the transformer oil, and has good thermal conductivity, insulation and stability.

Description

technical field [0001] The invention belongs to the technical field of transformer oil, and in particular relates to a heat-conducting transformer oil and a preparation method thereof. Background technique [0002] With the rapid development of the power grid system, the voltage level and transmission capacity continue to increase, which not only makes the volume and weight of power equipment continue to increase, but also reduces the safety and reliability of the equipment. The survey shows that from 2005 to 2010, the power outage accidents caused by the failure of power transmission and transformation equipment in my country accounted for 37% to 48% of the total accidents in that year, ranking first in the cause of failures. As a relatively mature insulation technology, oil-paper insulation is widely used in power equipment, but with the increase of service life, under the action of multiple physical fields such as electricity, magnetism, and machinery, the oil-paper insul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M125/04C10M177/00C10N30/04C10N40/16
CPCC10M125/04C10M177/00C10M2201/05C10M2201/08C10M2201/102C10M2201/14C10M2207/123C10M2209/104C10M2209/108C10M2217/024C10N2030/04C10N2040/16C10N2020/06
Inventor 张晶于海洋王斌樊佳明鞠训志袁冰周鑫刘红霞王晓红王飞姜海洋王晓燕唐晓力梁春芳姜晓阳于海燕邹晓华姚学进
Owner RONGCHENG POWER SUPPLY CO STATE GRID SHANDONG ELECTRIC POWER CO
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