Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Plant insulating oil and preparation method thereof

A technology of vegetable insulating oil and refined vegetable oil, which is applied in the petroleum industry, lubricating compositions, etc., can solve problems such as poor lightning impulse characteristics, improve lightning impulse breakdown voltage, improve safety and reliability, and reduce the probability of insulation failures Effect

Inactive Publication Date: 2018-08-28
CHONGQING UNIV
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, in order to improve the disadvantage of poor lightning impulse characteristics of vegetable insulating oil, the present invention provides a high-performance vegetable insulating oil and its preparation method. Firstly, suitable additives are selected, and the selected additives are quickly and uniformly dissolved in In vegetable insulating oil, thereby improving the insulating properties of vegetable insulating oil

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The present embodiment prepares a kind of soybean insulating oil and comprises the following steps:

[0029] 1) Refining crude soybean oil to obtain refined soybean oil.

[0030] 2) Mix the ultraviolet absorber N-(ethoxycarbonylphenyl)-N'-methyl-N'-phenylformamidine with a wavelength of 280-400nm containing an ester group and a benzene ring with refined soybean oil:

[0031] a, adding 1% N-(ethoxycarbonylphenyl)-N'-methyl-N'-phenylformamidine into 99% refined soybean oil by mass fraction, and heating to 65 ℃;

[0032] b. Ultrasonic shake the mixture prepared in step 2) at 65°C for 30 minutes, while stirring at a speed of 75r / min for 5 hours to ensure that N-(ethoxycarbonylphenyl)-N'-methyl-N' - phenyl formamidine is fully dispersed in refined soybean oil;

[0033] c. The mixture prepared in b) in step 2) is vacuum dehydrated, heated to 50° C., and kept for 5 hours.

[0034] 3) Add antioxidants and metal deactivators:

[0035] a. Heat the mixture of UV absorber and ...

Embodiment 2

[0039] The present embodiment prepares a kind of tea seed insulating oil and comprises the following steps:

[0040] 1) Refining tea seed oil crude oil to obtain refined tea seed oil.

[0041] 2) Mix the ultraviolet absorber cinnamic acid compound 4-methoxystyrene acid-2-ethylhexyl ester containing ester group and benzene ring with a wavelength of 280-400nm and refined tea seed oil:

[0042] a, adding 4-methoxystyrene acid-2-ethylhexyl ester with a mass fraction of 5% into refined tea seed oil with a mass fraction of 95%, and heating to 80°C;

[0043] b. Ultrasonic shake the mixture prepared in step 2) at 80°C for 20 minutes, while stirring at a speed of 55r / min for 3 hours to ensure that 4-methoxystyrene acid-2-ethylhexyl ester is fully dispersed in the refining in tea seed oil;

[0044] c. The mixture prepared in b in step 2) is vacuum dehydrated, and the oil temperature is heated at 70° C. for 3 hours.

[0045] 3) Add antioxidants and metal deactivators:

[0046] a. Hea...

Embodiment 3

[0050] The present embodiment prepares a kind of rapeseed insulating oil and comprises the following steps:

[0051] 1) Refining crude rapeseed oil to obtain refined rapeseed oil.

[0052] 2) The ultraviolet absorber p-aminobenzoic acid compound 4-dimethylaminobenzoic acid-2-ethylhexyl (octyl dimethylaminobenzoate) containing an ester group and a benzene ring with a wavelength of 280-400nm:

[0053] a, adding 4-methoxystyrene acid-2-ethylhexyl ester with a mass fraction of 10% to refined rapeseed oil with a mass fraction of 90%, and heating to 70°C;

[0054] b. Ultrasonic shake the mixture prepared in step 2) at 70°C for 25 minutes, while stirring at a speed of 70r / min for 4 hours to ensure that 4-methoxystyrene acid-2-ethylhexyl ester is fully dispersed in the refining in rapeseed oil;

[0055] c. The mixture prepared in b in step 3) is subjected to vacuum dehydration, and the oil temperature is heated at 60° C. for 4 hours.

[0056] 3) Add antioxidants and metal deactivator...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
wavelengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of liquid insulating material preparation, and particularly relates to a plant insulating oil and a preparation method thereof. The method comprises the steps that firstly refinement is carried out on vegetable oil crude oil, then ultraviolet absorbent and the refined vegetable oil are mixed, and finally antioxidant and metal deactivator are added to prepare the novel plant insulating oil. The plant insulating oil can significantly improve the lightning impulse breakdown voltage of the plant insulating oil, thereby effectively reducing the probability of occurrence of insulation fault of a power transformer.

Description

technical field [0001] The invention belongs to the technical field of preparation of liquid insulating materials, and in particular relates to a vegetable insulating oil and a preparation method thereof. Background technique [0002] Vegetable insulating oil, as a high ignition point, degradable and environmentally friendly liquid dielectric, is generally considered to be a good substitute for mineral insulating oil. Vegetable insulating oil has good engineering applications in distribution transformers, and is gradually being used in large power transformers. Large-scale power transformers are large in size, and the electric field at the outlet end is concentrated, so the requirements for the breakdown strength of vegetable insulating oil and its oil-paper insulation are high. The lightning impulse characteristics of vegetable insulating oil are very different from those of mineral insulating oil in long gaps. Vegetable insulating oil is prone to rapid flow in a large ga...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/16
CPCC10M169/04C10M2207/026C10M2207/281C10M2207/40C10M2215/06C10M2215/14C10N2040/16
Inventor 李剑黄正勇王飞鹏廖瑞金杨丽君陈伟根王有元杜林梁苏宁周靖涵
Owner CHONGQING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com