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Oil Pre-treatment and Degassing Method for Gas Chromatographic Analysis of Transformer Insulating Oil

A transformer insulating oil and chromatographic analysis technology, which is applied in the field of insulating oil gas chromatography analysis, can solve the problems that affect the accuracy of the analysis results, the analyst's work intensity is high, and the operation process is complicated, so as to reduce the artificial reading error and improve the quality of the oil. Gas rate, the effect of improving work efficiency

Active Publication Date: 2015-10-28
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0002] At present, the pretreatment and degassing methods for gas chromatographic analysis of transformer insulating oil are mostly vibration degassing method, thin film degassing method, vacuum degassing method and other methods, which are mainly used in petroleum, electric power and other fields. The existing degassing method operation links It is relatively complex, and the analysts work intensively, and each link is easy to introduce measurement error and system error, which is easy to affect the accuracy of the analysis results

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  • Oil Pre-treatment and Degassing Method for Gas Chromatographic Analysis of Transformer Insulating Oil
  • Oil Pre-treatment and Degassing Method for Gas Chromatographic Analysis of Transformer Insulating Oil
  • Oil Pre-treatment and Degassing Method for Gas Chromatographic Analysis of Transformer Insulating Oil

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Embodiment Construction

[0034] The implementation of the present invention will be described in further detail below in conjunction with the accompanying drawings. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0035] A kind of oil product pretreatment degassing method that is used for transformer insulating oil gas chromatographic analysis, such as figure 1 As shown, the equipment used in the method includes a constant temperature sample box, an instrument constant temperature sample tray, an oil-dissolved gas elutor, a cold trap, a chromatographic column, a detector, and a control computer for data processing. The steps of the method are as follows:

[0036] (1) Retrieve the transformer insulating oil sample at the substation;

[0037] (2) put the retrieved sample into a constant temperature sample box for constant temperature, and the constant temperature sample box is a common constant temperature sample box sold ...

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Abstract

The invention relates to an oil pretreatment degassing method for gas chromatography of transformer insulating oil. The method comprises the following steps: (1) a transformer insulating oil sample is obtained from a transformer substation; (2) the obtained sample is put into a constant-temperature sample box for keeping constant temperature; (3) the obtained sample is put onto an instrument constant-temperature sample disc, and sample introduction is started; (4) the sample enters an oil dissolved gas elution device for sample elution; (5) mixture elution gas after the elution is subjected to forward-blowing adsorption and backward-blowing desorption by the lower part of a cold trap device, and finally desorption gas is discharged from the lower part of the cold trap device; (6) the desorption gas discharged from the lower part of the cold trap device enters a chromatographic column of a gas chromatograph for detection after separation; (7) components of the sample are detected by a detector; (8) contents of the components are calculated. In the method, the elution device and the cold trap device improve the oil degassing efficiency, so that the accuracy of an experimental analysis result is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of insulating oil gas chromatographic analysis, in particular to an oil product pretreatment and degassing method for transformer insulating oil gas chromatographic analysis. Background technique [0002] At present, the pretreatment and degassing methods for gas chromatographic analysis of transformer insulating oil are mostly vibration degassing method, thin film degassing method, vacuum degassing method and other methods, which are mainly used in petroleum, electric power and other fields. The existing degassing method operation links It is relatively complicated, and the work intensity of analysts is relatively high, and each link is easy to introduce measurement errors and system errors, which can easily affect the accuracy of analysis results. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a method for degassing oi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/06
Inventor 刘鸿芳郭军科卢立秋于金山苏展郝春燕赵鹏林琳路菲杜涛
Owner STATE GRID CORP OF CHINA
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