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Method for detecting corrosive and harmful gas in insulating material of dry type transformer

A technology for dry-type transformers and insulating materials, which is applied in the direction of material separation, analysis of materials, preparation of test samples, etc., can solve the problem that standards cannot be realized, and there is no method for detecting corrosive and harmful gases in dry-type transformer insulation materials, etc. question

Inactive Publication Date: 2011-06-01
沈阳变压器研究院有限公司
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Problems solved by technology

At present, there is no record of methods for detecting corrosive and harmful gases in dry-type transformer insulation materials, making the standard impossible to achieve

Method used

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  • Method for detecting corrosive and harmful gas in insulating material of dry type transformer
  • Method for detecting corrosive and harmful gas in insulating material of dry type transformer

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Experimental program
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Embodiment Construction

[0015] (1), extract the insulating material sample from the winding of the tested product, take 0.300 g after crushing and put it into the sample boat 4;

[0016] (2), sample boat is put into 9 quartz tubes 3 lis of tubular resistance furnace;

[0017] (3), the method that the air inlet of quartz tube 2 is connected with oxygen bottle, and the air outlet is connected with two inspiratory bottles connected in series is that an end cover 1,5 is respectively arranged at the two ends of quartz tube 2, and each end cover is inserted Breather pipe 10,6 makes the quartz tube airtight, prepares to be filled with oxygen, and the method for connecting two suction bottles is that the suction port of the previous suction bottle 8 is connected to the trachea 6, and the gas outlet of the previous suction bottle 8 is connected to the rear The air inlet of an aspirating bottle 7, each aspirating bottle is filled with 4ml alkaline solution;

[0018] (4) Inflate oxygen into the quartz tube, an...

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Abstract

The invention provides a method for detecting a corrosive and harmful gas in an insulating material of a dry type transformer, aiming to solve the problem that national standard issues a detection requirement on corrosive and harmful gas escape. The method is characterized in that an insulating material sample is extracted from a detected product, is crushed and put in a quartz tube of a tube type resistance furnace to be heated and oxygen is introduced in so as to generate acidic gas; two serially connected aspirator bottles filled with alkaline solution are connected to a gas outlet of the quartz tube to absorb the acidic gas; when the temperature rises to 1,000 DEG C, the heating is stopped; absorption solutions in the two aspirator bottles are collected, and deionized water is added into the mixture; and toxic substances is detected by adopting an ion chromatography-suppressed conductance detector and an ultraviolet-visible spectrometry spectrophotometry. The method provides reliable parameters for manufacturers to produce standard non-corrosive non-toxic green environmentally-friendly dry type transformers.

Description

technical field [0001] The invention relates to a method for detecting corrosive and harmful gases in insulating materials of dry-type transformers. Background technique [0002] For environmental protection, the national standard for power transformers "Part 11: Dry-type Transformers" GB1094.11-2007 puts forward the detection requirements for the leakage of corrosive and harmful gases in the insulating materials of dry-type transformers, so that the gas that escapes during combustion Toxic substances and opaque fumes are kept to a minimum, and raw materials containing halides are avoided. The standard clearly stipulates that hydrogen fluoride (HF), hydrogen chloride (HCL), hydrogen bromide (HBr), hydrogen cyanide (HCN), sulfur dioxide (SO 2 ) and formaldehyde (HCHO) and other components. At present, there is no record of the method of detecting corrosive and harmful gases in the insulating material of dry-type transformers, making the standard impossible to achieve. Con...

Claims

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Application Information

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IPC IPC(8): G01N30/96G01N21/31G01N1/28
Inventor 张辉奕祁颖矢张鑫王帆郑久江李世成王茂松李明智
Owner 沈阳变压器研究院有限公司
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