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Anti-gassing natural ester insulating oil and preparation method thereof

A technology of natural ester and insulating oil, applied in the petroleum industry, lubricating composition, etc., can solve the problems of unfavorable operation of transformer heat dissipation, high kinematic viscosity, etc.

Inactive Publication Date: 2021-01-08
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although natural ester insulating oil has many advantages such as safety, environmental protection, biological non-toxicity and renewable, its main component is fatty acid triglyceride, and its kinematic viscosity is relatively high, which is not conducive to the heat dissipation of the operating transformer.

Method used

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  • Anti-gassing natural ester insulating oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Raw materials

[0032] In parts by weight, 98 parts of refined rapeseed oil, 0.6 part of BHT, 0.4 part of Irgamet39, and 1 part of benzyltoluene (M / DBT).

[0033] 2. Preparation method

[0034] Fully mix refined rapeseed oil, BHT, Irgamet39 and benzyltoluene (M / DBT) at 80°C and vacuum 20-50mmHg under stirring conditions to obtain gas evolution-resistant natural ester insulating oil.

Embodiment 2

[0036] The difference between this example and Example 1 is that the raw materials are in parts by weight, 95 parts of refined rapeseed oil, 0.6 part of BHT, 0.4 part of Irgamet39, and 4 parts of benzyltoluene (M / DBT).

experiment example

[0040] In this experimental example, the performance indexes of the anti-gassing natural ester insulating oil prepared in Examples 1-2 and Comparative Example 1 are tested. The test standards or methods for each performance index are as follows:

[0041] Kinematic viscosity (40°C): ASTM D445;

[0042] Dielectric dissipation factor (90°C): ASTM D924;

[0043] Breakdown voltage (2.5mm spacing): ASTM D1816;

[0044] Flash point: ASTM D92;

[0045] 48h Oxidation Stability: Refer to NB / SH / T 0811-2010, the condition is improved to put 25g sample in an oil bath at 110℃ in the presence of copper catalyst, and let air flow in at a flow rate of 1L / h, after oxidation for 48h , measure the acid value of the oil sample and the quality of the precipitate formed, and use the acid value and the precipitate (ratio of the mass of the precipitate to the mass of the sample, ‰) to represent the antioxidant capacity of the oil. The higher the oil-soluble acid value and the larger the precipitate...

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Abstract

The invention relates to the technical field of transformer insulating oil, and particularly discloses anti-gassing natural ester insulating oil and a preparation method thereof. In the process of preparing the natural ester insulating oil, benzyl toluene is added into the raw materials, so that the gassing property of the prepared natural ester insulating oil is remarkably enhanced, and the kinematic viscosity of the natural ester insulating oil is reduced. The experimental research results show that after benzyl toluene is added into refined vegetable oil in the process of preparing the natural ester insulating oil, H2, CH4, C2H6, C2H2 and other gases generated in the natural ester insulating oil can be absorbed, and the gassing property of the natural ester insulating oil is enhanced, so that the phenomena of accelerated aging and the like of the natural ester insulating oil caused by the gases are avoided, and transformer faults are avoided.

Description

technical field [0001] The invention relates to the technical field of transformer insulating oil, in particular to an anti-gassing natural ester insulating oil and a preparation method thereof. Background technique [0002] At present, the insulating liquid of oil-immersed power equipment mainly uses mineral insulating oil. Mineral insulating oil is refined from petroleum. Petroleum is a non-renewable resource. The limited nature of increasingly depleted petroleum resources determines that it cannot provide a continuous and stable large-scale supply of traditional mineral oil; in recent decades, due to the accelerated exploitation of petroleum and With the continuous deterioration of the environment, new sustainable and environmentally friendly materials have begun to attract people's attention. Natural ester insulating oil comes from oil crops and is a renewable resource. Compared with mineral insulating oil, natural ester insulating oil has higher fire resistance and env...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M177/00C10N40/16C10N30/10C10N30/14C10N20/02
CPCC10M169/04C10M177/00C10M2207/401C10M2203/06C10M2207/026C10M2215/223
Inventor 吴波盛望群魏光丁大鹏宫衍圣黄文勋王继来刘巍曲尚开周志录蒋功连张业李景坤王洋靳松李琦刘若飞
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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