A kind of preparation method of mixed vegetable oil impregnating agent for capacitor

A vegetable oil, impregnating agent technology, applied in drying/dipping machine, fat oil/fat refining, fat oil/fat production, etc., can solve the problem of unsatisfactory parameters such as freezing point, dielectric coefficient, dielectric loss, etc., limiting the type of capacitors with impregnants and functions, to achieve excellent freezing point, good use value, and the effect of expanding types and functions

Active Publication Date: 2018-06-05
ANHUI FEIDA ELECTRICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, it is found that although the thermal expansion coefficient, flash point, ignition point, and breakdown voltage of vegetable oil (such as castor oil) are good, its parameters such as freezing point, dielectric coefficient, and dielectric loss are not ideal, which limits its use. Types and functions of capacitors used as impregnants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method for a mixed vegetable oil impregnating agent for capacitors, the mixed vegetable oil impregnating agent is made of the following parts by weight:

[0021] 60 parts olive oil, 8 parts coconut oil, 5 parts grapeseed oil, 15 parts canola oil, 10 parts cottonseed oil, 4 parts rice bran oil, 3 parts jojoba oil, 4 parts evening primrose oil;

[0022] The preparation method of described mixed vegetable oil steeping agent specifically comprises the steps:

[0023] (1) Mix olive oil, coconut oil, grapeseed oil, rapeseed oil, cottonseed oil, rice bran oil, jojoba oil and evening primrose oil, and stir at a speed of 600 rpm to get mixed oil A for later use ;

[0024] (2) Put the mixed oil A obtained in step (1) into a closed tank, keep the temperature in the tank at -10°C and the pressure at 0.35 MPa, cool for 1 hour, and filter the mixed oil B for later use;

[0025] (3) Put the mixed oil B obtained in step (2) into the airtight tank again, heat to keep the...

Embodiment 2

[0027] A preparation method for a mixed vegetable oil impregnating agent for capacitors, the mixed vegetable oil impregnating agent is made of the following parts by weight:

[0028] 66 parts olive oil, 13 parts coconut oil, 9 parts grapeseed oil, 18 parts rapeseed oil, 12 parts cottonseed oil, 7 parts rice bran oil, 4 parts jojoba oil, 5 parts evening primrose oil;

[0029] The preparation method of described mixed vegetable oil steeping agent specifically comprises the steps:

[0030] (1) Mix olive oil, coconut oil, grapeseed oil, rapeseed oil, cottonseed oil, rice bran oil, jojoba oil and evening primrose oil, and stir at a speed of 700 rpm to get mixed oil A for later use ;

[0031] (2) Put the mixed oil A obtained in step (1) into a closed tank, keep the temperature in the tank at -12°C, and the pressure at 0.38 MPa, cool for 1.2 hours, and filter the mixed oil B for later use;

[0032] (3) Put the mixed oil B obtained in step (2) into the airtight tank again, heat to k...

Embodiment 3

[0034] A preparation method for a mixed vegetable oil impregnating agent for capacitors, the mixed vegetable oil impregnating agent is made of the following parts by weight:

[0035] 70 parts olive oil, 15 parts coconut oil, 10 parts grapeseed oil, 20 parts rapeseed oil, 13 parts cottonseed oil, 8 parts rice bran oil, 5 parts jojoba oil, 6 parts evening primrose oil;

[0036] The preparation method of described mixed vegetable oil steeping agent specifically comprises the steps:

[0037] (1) Mix olive oil, coconut oil, grapeseed oil, rapeseed oil, cottonseed oil, rice bran oil, jojoba oil and evening primrose oil, and stir at 800 rpm to get mixed oil A for later use ;

[0038] (2) Put the mixed oil A obtained in step (1) into a closed tank, keep the temperature in the tank at -13°C and the pressure at 0.4 MPa, cool for 1.5 hours, and filter the mixed oil B for later use;

[0039] (3) Put the mixed oil B obtained in step (2) into the airtight tank again, heat to keep the temp...

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PUM

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Abstract

The invention discloses a plant oil mixed impregnating agent used for capacitor, and belongs to the technical field of capacitor processing. The impregnating agent is prepared from olive oil, coconut oil, grape seed oil, rapeseed oil, cottonseed oil, rice bran oil, jojoba oil and evening primrose oil. The different plant oils are processed reasonably in a matched manner, it is ensured that content proportions of components in aliphatic acid of the oils are reasonable, certain waxy and colloid components which influence the performance removed, and the finally obtained plant oil mixed impregnating agent has high performances in the aspects including the solidifying point, a dielectric coefficient and dielectric loss, the impregnating agent can be applied to more types of capacitors, the capacitor using the impregnating agent has more comprehensively functions, and the using value is high.

Description

technical field [0001] The invention belongs to the technical field of capacitor processing, and in particular relates to a preparation method of a mixed vegetable oil impregnating agent for capacitors. Background technique [0002] For the insulation of oil-immersed electrical appliances, mineral oil was widely used at the earliest because of its good thermal conductivity, insulation and low price. The flame retardant insulating oil polychlorinated biphenyl used in the 1930s has been discontinued globally because of its high toxicity and environmental pollution. Subsequent capacitor impregnants used at home and abroad include: alkylbenzene (AB oil), phenylxylylethane (PXE, also known as diaryl ethane, S oil) and mono / dibenzyl toluene (M / DBT is also known as C101). Among them, alkylbenzene is a kind of synthetic insulating oil that was used after the prohibition of polychlorinated biphenyls. Its electrical and physical properties are better than mineral oil and its price ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G13/04C11B3/00C11B1/04
CPCC11B1/04C11B3/001C11B3/008H01G13/04
Inventor 胡忠胜华玲萍吴良军
Owner ANHUI FEIDA ELECTRICAL TECH CO LTD
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