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Direct quantitative calibration method for measuring hydrolyzable fluoride in sulfur hexafluoride gas

A technology of sulfur hexafluoride gas and calibration method, applied in the direction of analysis materials, instruments, etc., can solve the problems of heavy workload and cumbersome operation, and achieve the effect of improving efficiency, ensuring safety, and ensuring test accuracy and stability

Active Publication Date: 2015-07-29
STATE GRID CORP OF CHINA +3
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Problems solved by technology

[0003] The purpose of the present invention is to provide a direct quantitative verification method for the measurement of hydrolyzable fluoride in sulfur hexafluoride gas, using the method of standard gas instead of working fluid to quantitatively verify the measurement of hydrolyzable fluoride, solving the problems in the prior art It is necessary to prepare multiple working solutions with different fluoride ion concentrations, which is a technical problem of cumbersome operation and heavy workload

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0014] The invention proposes a direct quantitative verification method for the measurement of hydrolyzable fluoride in sulfur hexafluoride gas, which includes selecting easily hydrolyzed thionyl fluoride (SOF2) standard gas as a quantitative basis, and passing the SOF2 standard gas into the absorption In the solution, the SOF2 standard gas is completely dissolved in the absorption solution, and the concentration of fluorine ions in the absorption solution is proportional to the volume of the SOF2 standard gas.

[0015] The absorption solution is a sodium hydroxide solution of a certain concentration; SOF The volume of the standard gas is measured by a gas mass flowmeter; the fluoride ion concen...

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Abstract

The invention discloses a direct quantitative calibration method for measuring hydrolyzable fluoride in sulfur hexafluoride gas, and belongs to the technical field of equipment detection. The direct quantitative calibration method for measuring hydrolyzable fluoride in sulfur hexafluoride gas comprises the following steps: taking easily hydrolyzable SOF2 standard gas as a quantitative reference, feeding the SOF2 standard gas into an absorbent solution, and completely dissolving the SOF2 standard gas in the absorbent solution, wherein the fluoride ion concentration of the absorbent solution is in direct proportion to the feeding volume of the SOF2 standard gas. According to the method, quantification of hydrolyzable fluoride in the sulfur hexafluoride gas directly traces to the source of national standard material, the difficulties that workload of hydrolyzable fluoride measuring experiment is large, the operation is complex, and the parallel test error is large are solved, the accuracy and stability of the experiment are ensured, and meanwhile, the efficiency of sulfur hexafluoride gas quality control is improved.

Description

technical field [0001] The invention relates to a direct quantitative verification method for measuring hydrolyzable fluoride in sulfur hexafluoride gas, belonging to the technical field of equipment detection. Background technique [0002] The content of hydrolyzable fluoride in sulfur hexafluoride gas is a key indicator for controlling gas quality. Currently available methods for the measurement of hydrolyzable fluoride require the preparation of multiple working fluids with different fluoride ion concentrations, which is cumbersome and requires heavy workload. Contents of the invention [0003] The purpose of the present invention is to provide a direct quantitative verification method for the measurement of hydrolyzable fluoride in sulfur hexafluoride gas, using the method of standard gas instead of working fluid to quantitatively verify the measurement of hydrolyzable fluoride, solving the problems in the prior art It is necessary to prepare multiple working solution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N7/00
Inventor 朱洪斌张晓琴王晨余翔解文龙张建国陈大兵刘建军
Owner STATE GRID CORP OF CHINA
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