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A multifunctional gas chromatographic device gas circuit flow

A gas chromatograph and multi-functional technology, which is applied to instruments, scientific instruments, measuring devices, etc., can solve the problem that the gas flow process cannot meet the gas content analysis, and achieve the effect of easy operation and short analysis time.

Inactive Publication Date: 2007-05-23
HENAN ZHONGFEN INSTR
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Problems solved by technology

The gas flow process recommended in "Guidelines for Analysis and Judgment of Dissolved Gas in Transformer Oil" cannot meet the requirements of gas content analysis

Method used

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  • A multifunctional gas chromatographic device gas circuit flow

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Embodiment Construction

[0009] The gas path process adopts two injection ports 2, 5, three chromatographic columns 3, 6, 11, a dual-arm thermal conductivity detector 7, two hydrogen flame detectors 4, 9, and two injection ports 2, 5 And be connected on the carrier gas inlet 1, connect two chromatographic columns 3,6 in parallel behind the first inlet 2, chromatographic column 3 separates methane (CH 4 ), ethane (C 2 h 6 ) Ethylene (C 2 h 4 ), acetylene (C 2 h 2 ), detected by the hydrogen flame detector 4, and the chromatographic column 6 separates hydrogen (H 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ), the first arm of the thermal conductivity detector 7 detects hydrogen (H 2 ), carbon monoxide (CO) and carbon dioxide (CO 2 ) is catalyzed by the nickel catalyst conversion furnace 8 after passing through the thermal conductivity detector 7, and carbon monoxide (CO), carbon dioxide (CO 2 ) into methane (CH 4 ), then detected by the second hydrogen flame detector 9; the second inlet 5 ...

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Abstract

A multi-functional gas chromatograph gas path flow, the gas path flow uses two inlets, three chromatograph columns, one two-arm thermal conductivity detector, two hydrogen flame detector, and two inlets parallel connecting to the carrier gas inlet, behind the first inlet, parallel connecting two chromatograph columns, one chromatograph column linking the hydrogen flame detector, another chromatograph column linking the nickel catalyst furnace and the second hydrogen flame detector through the first arm of the thermal conductivity detector; the second inlet followed by the third chromatograph column and the second arm of the thermal conductivity detector. The invention using one thermal conductivity detector, two hydrogen flame detectors, to process oil dissolved gas analysis, a sampling can complete seven gases analysis, simple operation and short analysis time; when processing oil gas content analysis, the gas path need not any changes, two times sampling can complete nine gases analysis, and it can process not only oil dissolved gas analysis in the electricity transformer, but also oil gas content analysis.

Description

1. Technical field [0001] The invention relates to a gas path process of a gas chromatograph, which is mainly used in the analysis of dissolved gas in power transformer oil and the analysis of gas content in oil. 2. Background technology [0002] The gas path recommended by the power industry standard DL / T722-2000 "Guidelines for the Analysis and Judgment of Dissolved Gases in Transformer Oil" has only one injection port and two chromatographic columns, and can only detect seven characteristic gases, namely hydrogen (H 2 ), methane (CH 4 ), ethane (C 2 h 6 ), ethylene (C 2 h 4 ), acetylene (C 2 h 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ), and the analysis of gas content in power transformer oil requires the calculation of the total amount of gas in the oil, and also requires the detection of oxygen (O 2 ), nitrogen (N 2 ). The gas path process recommended in the "Guidelines for Analysis and Judgment of Dissolved Gas in Transformer Oil" cannot meet the requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/46G01N30/16
Inventor 王允彬王允志
Owner HENAN ZHONGFEN INSTR
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