CN104792939A - Integrative detection method for acidity of sulfur hexafluoride gas and content of hydrolysable fluoride - Google Patents
Integrative detection method for acidity of sulfur hexafluoride gas and content of hydrolysable fluoride Download PDFInfo
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- CN104792939A CN104792939A CN201510189408.2A CN201510189408A CN104792939A CN 104792939 A CN104792939 A CN 104792939A CN 201510189408 A CN201510189408 A CN 201510189408A CN 104792939 A CN104792939 A CN 104792939A
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- sulfur hexafluoride
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Abstract
The invention discloses an integrative detection method for the acidity of sulfur hexafluoride gas and the content of hydrolysable fluoride, and belongs to the technical field of electrical equipment detection. The method adopts the following technical scheme: the method is characterized by comprising steps of simultaneous absorbing through the same solution and measuring step by step, wherein the simultaneous absorbing through the same solution means that acidic material in the sulfur hexafluoride gas and the hydrolysable fluoride are simultaneously absorbed through sodium hydroxide solution with certain concentration; the measuring step by step means that the acidity of the sulfur hexafluoride gas is firstly measured, the pH value of solution is adjusted, and then the content of the hydrolysable fluoride is measured. The method firstly realizes the instrumentation detection of the acidity of the sulfur hexafluoride gas and the content of the hydrolysable fluoride, solves the defects of complex detection device, large solution use level, low sensitivity and the like in the traditional method, and has the advantages that the method is convenient to operate, the efficiency is high, the cost is reduced, and the method is environment-friendly.
Description
Technical field
The present invention relates to a kind of sulfur hexafluoride gas acidity and hydrolyzable content of fluoride integrated detection method, belong to electric device maintenance technical field.
Background technology
Sulfur hexafluoride gas has excellent insulating property, by device interior insulation clearance from greatly reducing, can be widely used in all kinds of power equipment.Sulfur hexafluoride gas acidity, hydrolyzable content of fluoride are test items indispensable in its quality control.At present, power industry standard still adopts traditional-handwork measuring method for the detection of sulfur hexafluoride gas acidity, hydrolyzable content of fluoride, there is the shortcomings such as test unit complexity, test period is long, use amount of solution is large, precision is not high, in addition the gas for substation field must transport test in laboratory back, person property's power of at substantial.Therefore develop sulfur hexafluoride gas acidity, hydrolyzable content of fluoride integrated detection method, the instrumentation that can realize first testing changes, and improve the sensitivity detected, and bring huge economic results in society, application prospect is extensive.
Summary of the invention
The object of this invention is to provide a kind of sulfur hexafluoride gas acidity and hydrolyzable content of fluoride integrated detection method, solution traditional-handwork measures the technical matters that the test unit existed is complicated, test period is long, use amount of solution is large, precision is not high.
The present invention adopts following technical scheme: a kind of sulfur hexafluoride gas acidity and hydrolyzable content of fluoride integrated detection method, is characterized in that, comprises and adopts same solution simultaneously stability, step measurement; Described same solution simultaneously stability refers to acidic materials in sulfur hexafluoride gas, hydrolyzable fluoride all adopts certain density sodium hydroxide solution simultaneously stability; Described step measurement refers to and first measures sulfur hexafluoride gas acidity, measures hydrolyzable content of fluoride again after adjustment solution ph.
Preferably, sulfur hexafluoride gas acidity adopts pH sensor to measure, and hydrolysis content of fluoride adopts fluorine ion sensing device to measure.
Preferably, detection method specifically comprises the steps:
SS1 sensor calibration: before on-test, first verifies pH sensor and fluorine ion sensing device;
SS2 sulfur hexafluoride gas absorbs: with pH sensor measurement sodium hydroxide solution pH, by sulfur hexafluoride gas with certain flow rate, pass into sodium hydroxide solution, gas middle acid substance, hydrolyzable fluoride are absorbed by sodium hydroxide solution simultaneously;
SS3 sulfur hexafluoride acidity assaying: the pH value again using pH sensor measurement sodium hydroxide solution, by the change of pH value, calculates sulfur hexafluoride gas acidity;
SS4 hydrolyzable content of fluoride measures: in sodium hydroxide solution, add dilution heat of sulfuric acid, regulates solution ph to 7, measures the fluorinion concentration of now solution, thus obtain hydrolyzable content of fluoride in sulfur hexafluoride gas with fluorine ion sensing device.
The beneficial effect that the present invention reaches: (1) the present invention changes the method for traditional pure manual test, acidity measurement, hydrolyzable fluoride are detected two complicated tests to be integrated together, and realize instrumentation, avoid the error that manual operation brings, improve the accuracy of test findings, further for the safe operation of electrical equipment provides powerful guarantee; (2) by will the pH value of solution be regulated in fluorinion concentration measuring process to 7, effectively the fluorine ion sensing device of sensitivity be protected; (3) the invention solves that traditional technique in measuring step is complicated, solution usage large, the not high difficult point of sensitivity, can be applicable to the inspection of substation field sulfur hexafluoride gas, without the need to transporting gas cylinder back laboratory, save a large amount of person property's power, and significantly improve work efficiency, there are huge economic results in society.
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 adopts following technical scheme: a kind of sulfur hexafluoride gas acidity and hydrolyzable content of fluoride integrated detection method, is characterized in that, comprises and adopts same solution simultaneously stability, step measurement; Described same solution simultaneously stability refers to acidic materials in sulfur hexafluoride gas, hydrolyzable fluoride all adopts certain density sodium hydroxide solution simultaneously stability; Described step measurement refers to and first measures sulfur hexafluoride gas acidity, measures hydrolyzable content of fluoride again after adjustment solution ph.
Preferably, sulfur hexafluoride gas acidity adopts pH sensor to measure, and hydrolysis content of fluoride adopts fluorine ion sensing device to measure.
Preferably, described detection method specifically comprises the steps:
SS1 sensor calibration: before on-test, first verifies pH sensor and fluorine ion sensing device;
SS2 sulfur hexafluoride gas absorbs: with pH sensor measurement sodium hydroxide solution pH, by sulfur hexafluoride gas with certain flow rate, pass into sodium hydroxide solution, gas middle acid substance, hydrolyzable fluoride are absorbed by sodium hydroxide solution simultaneously;
SS3 sulfur hexafluoride acidity assaying: the pH value again using pH sensor measurement sodium hydroxide solution, by the change of pH value, calculates sulfur hexafluoride gas acidity;
SS4 hydrolyzable content of fluoride measures: in sodium hydroxide solution, add dilution heat of sulfuric acid, regulates solution ph to 7, measures the fluorinion concentration of now solution, thus obtain hydrolyzable content of fluoride in sulfur hexafluoride gas with fluorine ion sensing device.
The beneficial effect that the present invention reaches: (1) the present invention changes the method for traditional pure manual test, acidity measurement, hydrolyzable fluoride are detected two complicated tests to be integrated together, and realize instrumentation, avoid the error that manual operation brings, improve the accuracy of test findings, further for the safe operation of electrical equipment provides powerful guarantee; (2) by will the pH value of solution be regulated in fluorinion concentration measuring process to 7, effectively the fluorine ion sensing device of sensitivity be protected; (3) the invention solves that traditional technique in measuring step is complicated, solution usage large, the not high difficult point of sensitivity, can be applicable to the inspection of substation field sulfur hexafluoride gas, without the need to transporting gas cylinder back laboratory, save a large amount of person property's power, and significantly improve work efficiency, there are huge economic results in society.
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 (3)
1. sulfur hexafluoride gas acidity and a hydrolyzable content of fluoride integrated detection method, is characterized in that, comprises and adopt same solution simultaneously stability, step measurement; Described same solution simultaneously stability refers to acidic materials in sulfur hexafluoride gas, hydrolyzable fluoride all adopts certain density sodium hydroxide solution simultaneously stability; Described step measurement refers to and first measures sulfur hexafluoride gas acidity, measures hydrolyzable content of fluoride again after adjustment solution ph.
2. a kind of sulfur hexafluoride gas acidity according to claim 1 and hydrolyzable content of fluoride integrated detection method, it is characterized in that, described sulfur hexafluoride gas acidity adopts pH sensor to measure, and described hydrolysis content of fluoride adopts fluorine ion sensing device to measure.
3. a kind of sulfur hexafluoride gas acidity according to claim 2 and hydrolyzable content of fluoride integrated detection method, it is characterized in that, described detection method specifically comprises the steps:
SS1 sensor calibration: before on-test, first verifies pH sensor and fluorine ion sensing device;
SS2 sulfur hexafluoride gas absorbs: with pH sensor measurement sodium hydroxide solution pH, by sulfur hexafluoride gas with certain flow rate, pass into sodium hydroxide solution, gas middle acid substance, hydrolyzable fluoride are absorbed by sodium hydroxide solution simultaneously;
SS3 sulfur hexafluoride acidity assaying: the pH value again using pH sensor measurement sodium hydroxide solution, by the change of pH value, calculates sulfur hexafluoride gas acidity;
SS4 hydrolyzable content of fluoride measures: in sodium hydroxide solution, add dilution heat of sulfuric acid, regulates solution ph to 7, measures the fluorinion concentration of now solution, thus obtain hydrolyzable content of fluoride in sulfur hexafluoride gas with fluorine ion sensing device.
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| CN106093293A (en) * | 2016-08-16 | 2016-11-09 | 国网江西省电力公司电力科学研究院 | A kind of detection method of sulfur hexafluoride gas acid decomposition substrate concentration |
| 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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Cited By (3)
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| 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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