CN104807719A - Direct quantitative calibration method for measuring hydrolyzable fluoride in sulfur hexafluoride gas - Google Patents
Direct quantitative calibration method for measuring hydrolyzable fluoride in sulfur hexafluoride gas Download PDFInfo
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- CN104807719A CN104807719A CN201510189593.5A CN201510189593A CN104807719A CN 104807719 A CN104807719 A CN 104807719A CN 201510189593 A CN201510189593 A CN 201510189593A CN 104807719 A CN104807719 A CN 104807719A
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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
The present invention relates to the direct quantitative method of calibration of hydrolyzable fluoride measurement in a kind of sulfur hexafluoride gas, belong to testing techniques of equipment field.
Background technology
In sulfur hexafluoride gas, hydrolyzable content of fluoride is the key index controlling gaseous mass.Can be used in the method for hydrolyzable fluoride measurement at present, all need the working fluid preparing multiple different fluorinion concentration, complex operation, workload are large.
Summary of the invention
The object of this invention is to provide the direct quantitative method of calibration of hydrolyzable fluoride measurement in a kind of sulfur hexafluoride gas, the method of calibrating gas is adopted to replace working fluid quantitatively to verify the measurement of hydrolyzable fluoride, solve in prior art and all need the working fluid preparing multiple different fluorinion concentration, the technical matters that complex operation, workload are large.
The present invention adopts following technical scheme: the direct quantitative method of calibration of hydrolyzable fluoride measurement in a kind of sulfur hexafluoride gas, it is characterized in that, that chooses facile hydrolysis fluoridizes thionyl (SOF2) calibrating gas as quantitative foundation, described SOF2 calibrating gas is passed in absorbent solution, described SOF2 calibrating gas dissolves completely in described absorbent solution, and the fluorinion concentration in described absorbent solution passes into volume to described SOF2 calibrating gas and is directly proportional.
Preferably, absorbent solution is certain density sodium hydroxide solution.
Preferably, the volume of SOF2 calibrating gas adopts mass-flow gas meter to measure.
Preferably, the fluorinion concentration in absorbent solution adopts fluorine ion sensing device to measure.
Preferably, specifically comprise the steps:
SS1 gas absorption: pass into SOF2 calibrating gas with certain flow rate in NaOH absorbent solution, when mass-flow gas meter meter gaseous pass into volume be n rise time, stop air inlet, read fluorine ion sensing device and measure numerical value, n is positive number;
SS2 working curve is drawn: repeat step SS1 operation, pass into 2n, 3n, 4n, 5n, 6n respectively and rise gas, calculate the concentration at every turn passing into fluorine ion in absorption cell in absorption cell, the numerical value read with fluorine ion sensing device and fluorinion concentration drawing curve;
SS3 hydrolyzable content of fluoride is measured: when measuring hydrolyzable content of fluoride in sulfur hexafluoride gas, the numerical value that fluorine ion sensing device reads is read fluorinion concentration on working curve, can calculate hydrolyzable content of fluoride in gas.
The beneficial effect that the present invention reaches: (1) the present invention changes the method for the curve of preparing standard solution drawing in the past, adopts the measurement of calibrating gas direct quantitative verification hydrolyzable fluoride; (2) the invention solves that hydrolyzable fluoride measurement experiment work amount is large, complex operation, difficult point that parallel experiment error is large, while guarantee test Stability and veracity, improve the efficiency of sulfur hexafluoride gas quality control, ensure the safety of inflation power equipment further.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
The present invention proposes the direct quantitative method of calibration of hydrolyzable fluoride measurement in a kind of sulfur hexafluoride gas, comprise choose facile hydrolysis fluoridize thionyl (SOF2) calibrating gas as quantitative foundation, SOF2 calibrating gas is passed in absorbent solution, SOF2 calibrating gas dissolves completely in absorbent solution, and the fluorinion concentration in absorbent solution passes into volume to SOF2 calibrating gas and is directly proportional.
Absorbent solution is certain density sodium hydroxide solution; The volume of SOF2 calibrating gas adopts mass-flow gas meter to measure; Fluorinion concentration in absorbent solution adopts fluorine ion sensing device to measure; The present invention specifically comprises the steps:
SS1 gas absorption: pass into SOF2 calibrating gas with certain flow rate in NaOH absorbent solution, when mass-flow gas meter meter gaseous pass into volume be n rise time, stop air inlet, read fluorine ion sensing device and measure numerical value, n is positive number;
SS2 working curve is drawn: repeat step SS1 operation, pass into 2n, 3n, 4n, 5n, 6n respectively and rise gas, calculate the concentration at every turn passing into fluorine ion in absorption cell in absorption cell, the numerical value read with fluorine ion sensing device and fluorinion concentration drawing curve;
SS3 hydrolyzable content of fluoride is measured: when measuring hydrolyzable content of fluoride in sulfur hexafluoride gas, the numerical value that fluorine ion sensing device reads is read fluorinion concentration on working curve, can calculate hydrolyzable content of fluoride in gas.
The beneficial effect that the present invention reaches: (1) the present invention changes the method for the curve of preparing standard solution drawing in the past, adopts the measurement of calibrating gas direct quantitative verification hydrolyzable fluoride; (2) the invention solves that hydrolyzable fluoride measurement experiment work amount is large, complex operation, difficult point that parallel experiment error is large, guarantee test accuracy and stable think while, improve the efficiency of sulfur hexafluoride gas quality control, ensure the safety of inflation power equipment further.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and distortion, these improve and distortion also should be considered as protection scope of the present invention.
Claims (5)
1. the direct quantitative method of calibration of hydrolyzable fluoride measurement in a sulfur hexafluoride gas, it is characterized in that, that chooses facile hydrolysis fluoridizes thionyl (SOF2) calibrating gas as quantitative foundation, described SOF2 calibrating gas is passed in absorbent solution, described SOF2 calibrating gas dissolves completely in described absorbent solution, and the fluorinion concentration in described absorbent solution passes into volume to described SOF2 calibrating gas and is directly proportional.
2. the direct quantitative method of calibration of hydrolyzable fluoride measurement in a kind of sulfur hexafluoride gas according to claim 1, it is characterized in that, described absorbent solution is certain density sodium hydroxide solution.
3. the direct quantitative method of calibration of hydrolyzable fluoride measurement in a kind of sulfur hexafluoride gas according to claim 2, is characterized in that, the volume of described SOF2 calibrating gas adopts mass-flow gas meter to measure.
4. the direct quantitative method of calibration of hydrolyzable fluoride measurement in a kind of sulfur hexafluoride gas according to claim 3, is characterized in that, the fluorinion concentration in described absorbent solution adopts fluorine ion sensing device to measure.
5. the direct quantitative method of calibration of hydrolyzable fluoride measurement in a kind of sulfur hexafluoride gas according to claim 1, is characterized in that, specifically comprise the steps:
SS1 gas absorption: pass into SOF2 calibrating gas with certain flow rate in NaOH absorbent solution, when mass-flow gas meter meter gaseous pass into volume be n rise time, stop air inlet, read fluorine ion sensing device and measure numerical value, n is positive number;
SS2 working curve is drawn: repeating said steps SS1 operates, in absorption cell, pass into 2n, 3n, 4n, 5n, 6n respectively and rise gas, calculate the concentration at every turn passing into fluorine ion in absorption cell, the numerical value read with fluorine ion sensing device and fluorinion concentration drawing curve;
SS3 hydrolyzable content of fluoride is measured: when measuring hydrolyzable content of fluoride in sulfur hexafluoride gas, the numerical value that fluorine ion sensing device reads is read fluorinion concentration on working curve, can calculate hydrolyzable content of fluoride in gas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510189593.5A CN104807719B (en) | 2015-04-21 | 2015-04-21 | The direct quantitative method of calibration of hydrolyzable fluoride measurement in sulfur hexafluoride gas |
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| CN201510189593.5A CN104807719B (en) | 2015-04-21 | 2015-04-21 | The direct quantitative method of calibration of hydrolyzable fluoride measurement in sulfur hexafluoride gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324077A (en) * | 2016-08-03 | 2017-01-11 | 西安交通大学 | Gold-nanometer-hole-film ionizing thionyl-fluoride sensor |
| CN107525829A (en) * | 2017-08-03 | 2017-12-29 | 国网安徽省电力公司电力科学研究院 | The detection method of hydrolyzable content of fluoride in sulfur hexafluoride gas |
| CN107576708A (en) * | 2017-08-03 | 2018-01-12 | 国网安徽省电力公司电力科学研究院 | Hydrolyzable the Determination Method of Fluoride and device in sulfur hexafluoride gas |
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| CN2840031Y (en) * | 2005-09-05 | 2006-11-22 | 南京埃森环境技术有限公司 | The little water detector of online resistance-capacitance type sulfur hexafluoride |
| US20090282898A1 (en) * | 2005-07-11 | 2009-11-19 | Patrissi Charles J | Method for quantitative determination of hydrogen peroxide using potentiometric titration |
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2015
- 2015-04-21 CN CN201510189593.5A patent/CN104807719B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090282898A1 (en) * | 2005-07-11 | 2009-11-19 | Patrissi Charles J | Method for quantitative determination of hydrogen peroxide using potentiometric titration |
| CN2840031Y (en) * | 2005-09-05 | 2006-11-22 | 南京埃森环境技术有限公司 | The little water detector of online resistance-capacitance type sulfur hexafluoride |
Non-Patent Citations (1)
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| 中国医学科学院卫生研究所劳动卫生研究室: ""氟离子选择电极在测定尿液和水中含氟量的应用"", 《卫生研究》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324077A (en) * | 2016-08-03 | 2017-01-11 | 西安交通大学 | Gold-nanometer-hole-film ionizing thionyl-fluoride sensor |
| CN106324077B (en) * | 2016-08-03 | 2019-03-01 | 西安交通大学 | A kind of Jenner's metre hole thin-film electro is fluorinated thionyl sensor from formula |
| CN107525829A (en) * | 2017-08-03 | 2017-12-29 | 国网安徽省电力公司电力科学研究院 | The detection method of hydrolyzable content of fluoride in sulfur hexafluoride gas |
| CN107576708A (en) * | 2017-08-03 | 2018-01-12 | 国网安徽省电力公司电力科学研究院 | Hydrolyzable the Determination Method of Fluoride and device in sulfur hexafluoride gas |
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| CN104807719B (en) | 2017-09-01 |
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