Transformer capable of reducing sulfur corrosion

A transformer, sulfur corrosion technology, applied in the field of transformers, can solve the problems of insufficient adsorption of corrosive sulfide, low efficiency, long time, etc., and achieve the effects of increased specific surface area, high efficiency, and short adsorption time

Active Publication Date: 2020-09-15
刘云
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the biggest problem with this method is that the adsorption process takes a long time, the efficiency is low, and the adsorption of corrosive sulfides is not thorough enough.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: A transformer capable of reducing sulfur corrosion, characterized in that a new type of desulfurizer is added to transformer oil for desulfurization treatment.

[0029] Described novel desulfurizer is prepared according to the following steps:

[0030] (1) Dissolve propylene glycol methyl ether in chloroform to make a propylene glycol methyl ether chloroform solution with a volume fraction of 3.5%, mix the licorice waste residue and propylene glycol methyl ether chloroform solution evenly, let it stand at room temperature for 24 hours, and then dry it at 80°C until constant weight, to obtain pretreated licorice residue;

[0031] (2) Mix bran: pretreated licorice waste residue at a mass ratio of 3:7, then add ammonium sulfate and urea, add water and stir repeatedly, control the water content of the medium to 60%, sterilize with 0.1MPa damp heat for 30 minutes, and cool to room temperature. Obtain solid medium;

[0032] (3) Inoculate 2% Neurospora crassa s...

Embodiment 2

[0039] Embodiment 2: A transformer capable of reducing sulfur corrosion, characterized in that a new type of desulfurizer is added to the transformer oil for desulfurization treatment.

[0040] Described novel desulfurizer is prepared according to the following steps:

[0041] (1) Dissolve propylene glycol methyl ether in chloroform to form a propylene glycol methyl ether chloroform solution with a volume fraction of 2%, mix the licorice waste residue and propylene glycol methyl ether chloroform solution evenly, let it stand at room temperature for 24 hours, and then dry it at 80°C until constant weight, to obtain pretreated licorice residue;

[0042] (2) Mix bran: pretreated licorice waste residue at a mass ratio of 3:7, then add ammonium sulfate and urea, add water and stir repeatedly, control the water content of the medium at 56%, 0.1MPa damp heat sterilization for 30 minutes, and cool to room temperature. Obtain solid medium;

[0043] (3) Inoculate 1.5% Neurospora crass...

Embodiment 3

[0047] Embodiment 3: A transformer capable of reducing sulfur corrosion, characterized in that a new type of desulfurizing agent is added to the transformer oil for desulfurization treatment.

[0048] Described novel desulfurizer is prepared according to the following steps:

[0049](1) Dissolve propylene glycol methyl ether in chloroform to make a propylene glycol methyl ether chloroform solution with a volume fraction of 4.5%, mix the licorice waste residue and propylene glycol methyl ether chloroform solution evenly, let it stand at room temperature for 24 hours, and then dry it at 80°C until constant weight, to obtain pretreated licorice residue;

[0050] (2) Mix bran: pretreated licorice waste residue at a mass ratio of 3:7, then add ammonium sulfate and urea, add water and stir repeatedly, control the water content of the medium at 58%, 0.1MPa damp heat sterilization for 30 minutes, and cool to room temperature. Obtain solid medium;

[0051] (3) Inoculate 1% Neurospora...

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PUM

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Abstract

The invention relates to a transformer capable of reducing sulfur corrosion provided by the invention, a novel desulfurizing agent is added into transformer oil, so that the effect of efficient and deep desulfurization is achieved, and corrosion of sulfide to transformer parts is reduced. According to the invention, neurospora crassa and candida utilis are adopted to ferment the licorice waste residue; a part of lignin, cellulose and hemicellulose in the liquorice waste residues can be degraded, mycelia of neurospora crassa and candida utilis can fully penetrate through the interior of the fermentation material, a certain physical damage effect is exerted on the mycelia, and a microcosmic cavity is formed in the material. Therefore, the space structure of the modified liquorice waste residues is destroyed, the liquorice waste residues become rough and pleated, the porosity is high, the specific surface area is increased, and the adsorption performance on sulfide is greatly improved. The transformer has the advantages that dibenzyl disulfide and dodecanethiol in the transformer can be adsorbed at the same time, the adsorption efficiency is 95% or above, and negative influences on electrical parameters such as breakdown voltage, dielectric loss and resistivity of transformer oil are avoided.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a transformer capable of reducing sulfur corrosion. Background technique [0002] The mineral insulating oil currently used in transformers is mainly refined from natural petroleum. In addition to the two main elements of carbon and hydrogen, it also contains sulfur, nitrogen, oxygen, and metal elements. Active sulfides such as mercaptans and disulfides may cause sulfur corrosion problems. Current research shows that dibenzyl disulfide (abbreviated as DBDS) and dodecanethiol (abbreviated as DDM) are the most important corrosive sulfides that cause copper corrosion. Corrosive sulfur reacts with copper wires to form cuprous sulfide, which adheres to the surface of insulating paper and copper windings, resulting in a decrease in the insulation performance of the transformer and endangering the safe operation of the transformer. [0003] In terms of oil sulfur corrosion protection, meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G29/20C12P39/00C12P1/02C12R1/72C12R1/645
CPCC10G29/20C12P39/00C12P1/02C10G2300/202C12R2001/72C12N1/165C12R2001/645C12N1/145
Inventor 刘云
Owner 刘云
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