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Plant oil mixed impregnating agent used for capacitor

A vegetable oil and impregnating agent technology, applied in drying/impregnating machines, fat oil/fat production, fat oil/fat refining, etc., can solve the problem of capacitor type and function, freezing point, dielectric coefficient, dielectric loss and other parameters that limit the impregnating agent Very ideal and other issues, to achieve the effect of excellent freezing point, good use value, expanding type and function

Active Publication Date: 2017-04-19
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 mixed vegetable oil impregnating agent for capacitors, made of the following materials in 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] A preparation method for a mixed vegetable oil impregnating agent for capacitors, comprising the steps of:

[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 temperature at 80°C and the pressure at 0.4MPa, keep it...

Embodiment 2

[0027] A mixed vegetable oil impregnating agent for capacitors, made of the following materials in parts by weight:

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

[0029] A preparation method for a mixed vegetable oil impregnating agent for capacitors, comprising the steps of:

[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 keep the temperature at 83°C and the pressure at 0.42MPa, k...

Embodiment 3

[0034] A mixed vegetable oil impregnating agent for capacitors, made of the following materials in parts by weight:

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

[0036] A preparation method for a mixed vegetable oil impregnating agent for capacitors, comprising the steps of:

[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 temperature at 85°C and the pressure at 0.45MPa, keep it warm ...

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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 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 is low, but its gas abso...

Claims

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Application Information

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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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