Preparation method of nano particle modified insulating oil based on iron occurrence form

A nanoparticle and insulating oil technology, applied in insulators, petroleum industry, transformer/inductor components, etc., can solve problems such as aluminum pollution, achieve low cost, simple operation, and improve insulation performance and thermal conductivity.

Active Publication Date: 2021-06-11
JILIN PROVINCE ELECTRIC POWER RES INST OF JILIN ELECTRIC POWER CO LTD +4
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  • Abstract
  • Description
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Problems solved by technology

However, in the process of removing iron impurities by the above-mentioned adsorbents, various impurities will also be dissolved in the insulating oil, and its influence on the performance of the oil needs to be further explored
For example, in the process of oil treatment with activated alumina, a large amount of aluminum ions dissolve in the oil, resulting in aluminum pollution

Method used

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  • Preparation method of nano particle modified insulating oil based on iron occurrence form

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preparation example Construction

[0019] The present invention proposes a method for preparing a nanoparticle-modified insulating oil based on the form of iron. The insulating oil is applied to an oil-immersed power transformer. Specifically, the method includes the following steps:

[0020] Step 1: Prepare 40 mL of oleic acid ethanol solution with a mass fraction of 40% to 80%, stir evenly for later use; prepare 10 mL of hexamethylenetetramine ethanol solution with a mass fraction of 5% to 10%, stir evenly for later use, wherein Oleic acid ethanol solution is prepared by dissolving oleic acid in ethanol; hexamethylenetetramine ethanol solution is prepared by dissolving hexamethylenetetramine in ethanol;

[0021] Step 2: Mix and stir the oleic acid ethanol solution prepared in step 1 and the hexamethylenetetramine ethanol solution evenly, and leave to age for 2h to 4h to obtain the modifier;

[0022] Step 3: Mix 1 L of insulating oil with the modifier obtained in Step 2, add 5 mL to 10 mL of hexadecene, and co...

Embodiment 1

[0025] 1 involved in embodiment 1, embodiment 2 and embodiment 3 # insulating oil, 2 # insulating oil, 3 # Insulating oil samples were taken from three oil-immersed power transformers.

[0026] Example 1

[0027] In this embodiment, the preparation method of nanoparticle-modified insulating oil based on the iron occurrence form includes the following steps:

[0028] Step 1: Prepare 40 mL of oleic acid ethanol solution with a mass fraction of 40%, stir evenly for use; prepare 10 mL of hexamethylenetetramine ethanol solution with a mass fraction of 5%, stir evenly for use;

[0029] Step 2: Mix and stir the prepared oleic acid ethanol solution and hexamethylenetetramine ethanol solution evenly, and leave to age for 2 hours to obtain a modifier;

[0030] Step 3: Take 1 # Mix 1L of insulating oil with the modifier obtained in step 2 evenly, add 5mL of hexadecene, and continue to react for 2 hours under the condition of a constant temperature water bath of 60°C to 80°C at a sti...

Embodiment 2

[0033] In this embodiment, the preparation method of nanoparticle-modified insulating oil based on the iron occurrence form includes the following steps:

[0034] Step 1: Prepare 40 mL of oleic acid ethanol solution with a mass fraction of 60%, stir evenly for use; prepare 10 mL of hexamethylenetetramine ethanol solution with a mass fraction of 7%, stir evenly for use;

[0035] Step 2: Mix and stir the prepared oleic acid ethanol solution and hexamethylenetetramine ethanol solution evenly, and leave to age for 2 hours to obtain a modifier;

[0036] Step 3: Take 2 # Mix 1L of insulating oil with the modifier obtained in step 2 evenly, add 7mL of hexadecene, and continue the reaction for 2 hours under the condition of a constant temperature water bath of 60°C to 80°C at a stirring speed of 200r / min.

[0037] Depend on figure 1 It can be seen (working condition 2), this embodiment significantly improves the thermal conductivity and breakdown voltage of the insulating oil, and i...

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Abstract

The invention discloses a preparation method of nano particle modified insulating oil based on an iron occurrence form, and belongs to the field of insulating oil treatment in an oil-immersed power transformer. The preparation method comprises the following steps of: respectively preparing an oleic acid ethanol solution and a hexamethylenetetramine ethanol solution with different mass fractions, then uniformly mixing them with insulating oil, and adding hexadecene into the mixture, and continuously reacting the mixture under the conditions of stirring and constant-temperature water bath. According to the preparation method, the influence of different occurrence forms of iron on the aging and electrical performance of the insulating oil is effectively eliminated, and the behaviors of agglomeration, precipitation and the like occurring in different occurrence forms are successfully solved; different occurrence forms of iron can form modified nanoparticles, so that the insulating property and the heat-conducting property of the insulating oil are remarkably improved; the formed nano particles can capture oxygen molecules generated in the aging process of the insulating oil and adsorb metal ions, so that the aging of the insulating oil is delayed; and the method has the advantages of low cost, simplicity in operation, reliability in operation, no secondary pollution and the like.

Description

technical field [0001] The invention belongs to the field of insulating oil treatment in oil-immersed power transformers, and in particular relates to a preparation method of nano-particle modified insulating oil based on iron occurrence form. Background technique [0002] In the process of power transmission and transformation in the power system, transformers play a vital role in the safe operation of the entire power grid. Insulating oil is an important medium for transformer insulation and cooling, and its operation stability mainly depends on the insulating performance and heat dissipation performance of the insulating oil. In recent years, the metal ion content in insulating oil has attracted much attention. Metal corrosion and deposits usually appear in some faulty transformers. A large number of studies have found that the increase in metal content in insulating oil seriously reduces the insulation capacity of transformers, leading to partial discharges. The initial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/00H01F27/32H01F27/12C10M141/06C10N40/16C10N30/10
CPCH01B19/00H01F27/321H01F27/12C10M141/06C10M2207/126C10M2207/021C10M2215/04C10M2203/02
Inventor 林海丹张海丰张军贾艳张轶珠司金凤杨代勇刘赫杨明崔天城栾靖尧
Owner JILIN PROVINCE ELECTRIC POWER RES INST OF JILIN ELECTRIC POWER CO LTD
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