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Special desiccant for box-type transformer substation

A box-type substation and dehumidifier technology, applied in the substation/distribution device shell, gas treatment, membrane technology, etc., can solve the problems of metal parts damage, lower moisture absorption efficiency, easy expansion, etc., to reduce the use cost and moisture absorption efficiency High, large moisture absorption capacity

Pending Publication Date: 2021-12-28
HEBEI HANTAI ELECTRICAL EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the moisture absorption capacity is strong, it is easy to swell and agglomerate during the moisture absorption process, which reduces the moisture absorption efficiency
And these alkaline moisture absorbents are corrosive, easy to generate dust, and easy to damage the metal parts of the substation
Therefore, these alkaline moisture absorbents are not suitable for the working environment requirements of substations
In addition, most of the moisture absorbents currently used are disposable and cannot be regenerated
This not only increases the use cost of the hygroscopic agent, but also causes certain pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A special dehumidifier for a box-type substation, comprising the following components in weight percent: 20% sodium polyacrylate, 7.5% binder, 4% sodium polyaspartate, 1.5% anhydrous copper sulfate, 55% silica gel %, polymethyl acrylate 12%.

[0024] The special hygroscopic agent of preparation present embodiment comprises the following steps:

[0025] 1. Mixing: Pour the ethyl acetate solution of polymethylacrylate into the stirring tank, and the temperature is controlled at room temperature; then, add sodium polyacrylate, sodium polyaspartate, anhydrous copper sulfate, and silica gel according to the proportion ; Finally, add the binder and continue to stir for 2 hours to obtain a well-mixed mixture.

[0026] 2. After the stirring is completed, place the obtained mixture in a vacuum oven, keep the vacuum degree above -98kPa, and dry at 70°C for 3 hours to remove the ethyl acetate solvent.

[0027] 3. Put the dried material obtained in a punching machine, and punch i...

Embodiment 2

[0029] A special dehumidifier for a box-type substation, comprising the following components in weight percent: 15% sodium polyacrylate, 8% binder, 5% sodium polyaspartate, 2% anhydrous copper sulfate, 60% silica gel %, polymethyl acrylate 10%.

[0030] The special hygroscopic agent of preparation present embodiment comprises the following steps:

[0031] 1. Mixing: Pour the ethyl acetate solution of polymethylacrylate into the stirring tank, and the temperature is controlled at room temperature; then, add sodium polyacrylate, sodium polyaspartate, anhydrous copper sulfate, and silica gel according to the proportion ; Finally, add the binder and continue to stir for 3 hours to obtain a well-mixed mixture.

[0032] 2. After the stirring is completed, place the obtained mixture in a vacuum oven, keep the vacuum degree above -98kPa, and dry it at 75°C for 4 hours to remove the ethyl acetate solvent.

[0033] 3. Put the dried material obtained in a punching machine, and punch it...

Embodiment 3

[0035] A special dehumidifier for a box-type substation, comprising the following components in weight percent: 12.5% ​​sodium polyacrylate, 7% binder, 3% sodium polyaspartate, 1.5% anhydrous copper sulfate, 65% silica gel %, polymethyl acrylate 11%.

[0036] The special hygroscopic agent of preparation present embodiment comprises the following steps:

[0037] 1. Mixing: Pour the ethyl acetate solution of polymethylacrylate into the stirring tank, and the temperature is controlled at room temperature; then, add sodium polyacrylate, sodium polyaspartate, anhydrous copper sulfate, and silica gel according to the proportion ; Finally, add the binder and continue to stir for 3 hours to obtain a well-mixed mixture.

[0038] 2. After the stirring is completed, place the obtained mixture in a vacuum oven, keep the vacuum degree above -98kPa, and dry it at 75°C for 5 hours to remove the ethyl acetate solvent.

[0039] 3. Put the dried material obtained in a punching machine, and pu...

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PUM

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Abstract

The invention discloses a special desiccant for a box-type transformer substation. The desiccant is prepared from the following components in percentage by mass: 10.0-20.0% of sodium polyacrylate, 6.0-8.0% of a binder, 1.0-5.0% of sodium polyaspartate, 1.0-2.0% of anhydrous cupric sulfate, 55.0-70.0% of silica gel and 10-12% of polymethyl acrylate. According to the invention, the desiccant is synthesized according to a specific proportion and a specific preparation method, and is placed in a box-type transformer substation, so that the humidity in the box-type transformer substation can be effectively reduced, and the humidity in the box can be controlled within a reasonable range; the designed desiccant is not prone to generating dust, and can not generate dust pollution to transformer substation equipment; the special desiccant has an indication function, and a worker is reminded to replace the moisture absorbent through color change; the desiccant can be regenerated through ultrasonic waves to be reused, so that the purpose of saving the cost of the desiccant is achieved; and the desiccant has a relatively great application prospect.

Description

technical field [0001] The invention relates to the technical field of hygroscopic materials, more specifically, to a special dehumidifier for box-type substations. Background technique [0002] As we all know, humidity has a significant impact on the work of box-type substations. Excessive humidity may accelerate the corrosion of metal devices in substations, and in severe cases may directly lead to short circuits and damage components in substations. Therefore, ensuring the humidity in the box-type substation is very important for the normal operation of the substation. At present, people have developed a variety of moisture-proof means for box-type substations, and have carried out moisture-proof treatment for important components of substations. However, with the rapid development of my country's economy, the demand for box-type substations continues to increase, and its geographical scope of application will continue to expand. Simple moisture-proof treatment can no ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/28H02B1/28
CPCB01D53/28H02B1/28B01D2258/06B01D2257/80
Inventor 崔瑶程瑞兆
Owner HEBEI HANTAI ELECTRICAL EQUIP MFG CO LTD
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