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Transformer oil and preparation method thereof

A technology of transformer oil and mineral oil, which is applied in the field of transformers and can solve difficult problems such as insulation, heat conduction and flame retardancy

Inactive Publication Date: 2016-02-24
WUHU JINNIU ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, electrical insulating oil can meet the requirements of high insulation, but it is difficult to meet the requirements of excellent insulation resistance, heat conduction and flame retardancy at the same time.

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0014] The invention provides a kind of preparation method of transformer oil, comprising:

[0015] 1) crushing Galla chinensis, Chinese jujube, horse egg fruit and cotinus cotinus to obtain plant powder;

[0016] 2) mixing plant powder, water, pectinase, cellulase and acid and heat-treating, then adding lye for neutralization to obtain an enzymolysis mixture;

[0017] 3) Fractional distillation of the enzymatic hydrolysis mixture, and then collecting fractions at 175-185°C to obtain plant extracts;

[0018] 4) Mineral oil, vegetable oil, plant extract, phosphoric acid ester, nitrite, triethanolamine, antioxidant, neopentyl glycol and triazole compounds are mixed, and then dried to obtain transformer oil.

[0019] In step 1) of the present invention, the amount of each substance can be selected within a wide range, but in order to make the prepared transformer oil have more excellent performances of anti-insulation, heat conduction and flame retardancy, preferably, relative t...

Embodiment 1

[0030] 1) Grinding Galla gall, Jujube, Madanguo and Cotinus chinensis according to the weight ratio of 100:40:30:35 to obtain a plant powder with a particle size of 0.4mm;

[0031] 2) Mix plant powder, water, pectinase, and cellulase with acid in a weight ratio of 100:225:20:15 so that the pH of the system is 4 and heat-treat at 80°C for 1.5h, then add lye to carry out Neutralize to obtain an enzymolysis mixture (pH is 7);

[0032] 3) Fractional distillation of the enzymatic hydrolysis mixture, and then collecting fractions at 175-185°C to obtain plant extracts;

[0033] 4) Mineral oil, vegetable oil, plant extract, phosphate, nitrite, triethanolamine, antioxidant (4-ethylcatechol), neopentyl glycol and triazole compound (1-H-1 , 2,4-triazole) were mixed according to the weight ratio of 100:50:30:14:6:11:1.5:26:9, and then dried to obtain transformer oil A1 with a water content of 0.05% by weight.

Embodiment 2

[0035] 1) Grinding Galla gall, Jujube, Madanguo and Cotinus chinensis according to the weight ratio of 100:30:25:30 to obtain plant powder with a particle size of 0.3mm;

[0036] 2) Mix plant powder, water, pectinase, and cellulase with acid in a weight ratio of 100:200:15:8 to make the pH of the system 3.5 and heat-treat at 75°C for 1 hour, then add lye to carry out And to make the enzymolysis mixture (pH is 6.8);

[0037] 3) Fractional distillation of the enzymatic hydrolysis mixture, and then collecting fractions at 175-185°C to obtain plant extracts;

[0038] 4) Mineral oil, vegetable oil, plant extract, phosphate, nitrite, triethanolamine, antioxidant (4-ethylcatechol), neopentyl glycol and triazole compound (4-amino-1 , 2,4-triazole) were mixed according to the weight ratio of 100:40:20:10:4:9:1:22:4, and then dried to obtain transformer oil A2 with a water content of 0.03% by weight.

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Abstract

The invention discloses transformer oil and a preparation method thereof. The preparation method comprises the first step of smashing Chinese gall, poliothyrsis sinensis, gynocardia odorata and cotinus coggygria into plant powder, the second step of mixing and heating the plant powder, water, pectinase, cellulase and acid and then adding alkali liquor for neutralization to prepare enzymolysis mixed liquor, the third step of performing fractional distillation on the enzymolysis mixed liquor and then collecting fraction at the temperature between 175 DEG C and 185 DEG C to prepare plant extract, and the fourth step of mixing mineral oil, plant oil, the plant extract, phosphate, nitrite, triethanolamine, antioxidant, neopentyl glycol and a triazole compound and then drying the mixture to prepare the transformer oil. The transformer oil prepared through the method has excellent anti-insulation, heat conduction and flame-retardant performance.

Description

technical field [0001] The invention relates to a transformer, in particular to a transformer oil and a preparation method thereof. Background technique [0002] Electrical insulating oil is used in electrical equipment such as transformers and transformers. It is not only used as an insulating medium for electrical equipment, but also as a heat-conducting medium for conducting heat energy in electrical equipment. It mainly plays the role of insulation and cooling. [0003] With the continuous development of the power industry, the power grid and power load are increasing, and the safety requirements of users for electrical equipment such as transformers and oil are also increasing. Especially in the high-rise buildings of the urban power grid, higher requirements have been put forward for the fire resistance of the oil-immersed transformers used, so that the electrical insulating oil used should have a higher ignition point (according to GB / T3536 or ASTMD92 method, the igni...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/16
Inventor 肖吕斌黄志才肖伟林冯俊刘朝振
Owner WUHU JINNIU ELECTRIC
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