CN104792365A - Sulfur hexafluoride gas quality field integrated detector and detection method - Google Patents
Sulfur hexafluoride gas quality field integrated detector and detection method Download PDFInfo
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Abstract
The invention discloses a sulfur hexafluoride gas quality field integrated detector and a detection method and belongs to the technical field of power equipment detection. The sulfur hexafluoride gas quality field integrated detector comprises a gas inlet, a reducing valve, a first detecting line, a second detecting line and an exhaust outlet, wherein the gas inlet is connected with the reducing valve, the reducing valve is connected with the first detecting line and the second detecting line respectively, and the first detecting line and the second detecting line are connected with the exhaust outlet respectively. The invention further provides a detection method of the sulfur hexafluoride gas quality field integrated detector. By the detection method, integration and instrumentation of detection of six indicators of sulfur hexafluoride gas are realized, analysis time of the six indictors is shortened to half an hour from one day, steel gas bottles are prevented from transporting back for detection in labs, and analysis is realized on the sport in real time.
Description
Technical field
The present invention relates to a kind of on-the-spot detecting device integrated and method of sulfur hexafluoride gas quality, belong to electric device maintenance technical field.
Background technology
Sulfur hexafluoride gas possesses excellent insulating property, is widely used in all kinds of power equipment, and its moisture, decomposition product, purity, mineral oil, acidity, hydrolyzable content of fluoride are the important indicators controlling sulfur hexafluoride gas quality.For operating sulfur hexafluoride gas, the related impuritieses such as one side acidity, fluoride, decomposition product are very easily absorbed by steel cylinder, if touch moisture and oxygen in sampling process on the other hand, then can generate and fluoridize thionyl, fluoridize the impurity such as sulfonyl, hydrofluorite, gas is transported back laboratory based on above 2 reasons, detect data and cannot reflect gas truth, directly affects the judgement to electric power gas equipment running status, is the potential risk of power network safety operation.Research and development sulfur hexafluoride gas quality scene is detecting device integrated and method is most important.
Summary of the invention
The object of this invention is to provide a kind of on-the-spot detecting device integrated and method of sulfur hexafluoride gas quality, solve the technical matters that detection data of the prior art cannot reflect gas truth.
The present invention adopts following technical scheme: a kind of sulfur hexafluoride gas quality scene is detecting device integrated, it is characterized in that, comprise air intake opening, reduction valve, the first detection line, the second detection line, exhausr port, described air intake opening is connected with described reduction valve, described reduction valve is connected with described first detection line, described second detection line respectively, and described first detection line, described second detection line are connected with described exhausr port respectively; Described first detection line comprises solenoid valve one, six-way valve, water content detection module, decomposition product detection module, purity detecting module, described solenoid valve one is connected with described six-way valve, described six-way valve is connected with described water content detection module, described purity detecting module respectively, described water content detection module is connected with described decomposition product detection module, and described decomposition product detection module, described purity detecting module are connected with described exhausr port respectively; Described second detection line comprises solenoid valve two, mineral oil detection module, absorption cell, and described solenoid valve two is connected with described mineral oil detection module, and described mineral oil detection module is connected with described absorption cell, and described absorption cell is connected with described exhausr port; Described absorption cell comprises acidity detection module, hydrolyzable fluoride detection module, and described absorption cell inside is also provided with absorbing liquid.
Preferably, described water content detection module adopts capacitance-resistance method to detect; Described decomposition product detection module adopts electrochemical sensor to detect; Described purity detecting module adopts vapor-phase chromatography to detect; Described mineral oil detection module adopts the mineral oil in semi-permeable diaphragm absorption sulfur hexafluoride gas, then adopts infrared spectrum to detect; Described acidity detection module, described hydrolyzable fluoride detection module are integrated in same described absorption cell, use pH sensor and fluorine ion sensing device to measure respectively.
Preferably, the bottom of absorption cell is also connected with automatic sampler, leakage fluid dram; Automatic sampler is used for quantitatively adding absorbing liquid; Leakage fluid dram is used for discharging absorbing liquid.
Preferably, the top of absorption cell is also connected with pressure transducer, is used for the pressure shown in real time in absorption cell.
The present invention also proposes a kind of detection method utilizing sulfur hexafluoride gas quality scene detecting device integrated, it is characterized in that, comprises the steps:
SS1 absorbing liquid adds: open the automatic sampler bottom absorption cell, in absorption cell, add pure water, after having cleaned, adds the sodium hydroxide solution of setting given volume concentration, as the absorbing liquid of sulfur hexafluoride gas middle acid substance, hydrolyzable fluoride;
SS2 sulfur hexafluoride gas detects: open air inlet pipeline solenoid one, solenoid valve two, sulfur hexafluoride gas divides two-way to enter pick-up unit from air intake opening, start the measurement of moisture, decomposition product, purity, mineral oil, acidity, hydrolyzable content of fluoride simultaneously, after all completing, namely complete detection.
The beneficial effect that the present invention reaches: (1) solves sulfur hexafluoride gas quality control index cannot the difficult problem of Site Detection, has the features such as detection speed is fast, highly sensitive, easy and simple to handle, (2) the present invention is to moisture, purity, the instrumentation method of decomposition product content is optimized, to acidity, hydrolyzable fluoride, the detection means of mineral oil content carries out being bold in innovation and instrumentation transformation, achieve integration and the instrumentation of sulfur hexafluoride gas six Indexs measure first, avoid transporting gas bomb back test in laboratory, achieve real-time on-site analysis, greatly improve the level of resources utilization, reduce test period, save person property's power, there are economic results in society widely, for the safe and stable operation of electrical network and extra-high voltage project construction provide strong support.
Accompanying drawing explanation
Fig. 1 is the on-the-spot detecting device integrated structural representation of sulfur hexafluoride gas quality of the present invention.
The implication marked in figure: 1-air intake opening, 2-reduction valve, 3-exhausr port, 4-water content detection module, 5-decomposition product detection module, 6-purity detecting module, 7-mineral oil detection module, 8-acidity detection module, 9-hydrolyzable fluoride detection module, 10-absorption cell, 11-automatic sampler, 12-leakage fluid dram, 13-pressure transducer, 14-six-way valve, 15-solenoid valve one, 16-solenoid valve two.
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.
Fig. 1 is the on-the-spot detecting device integrated structural representation of sulfur hexafluoride gas quality of the present invention, it is detecting device integrated that the present invention proposes a kind of sulfur hexafluoride gas quality scene, comprise air intake opening 1, reduction valve 2, first detection line, the second detection line, exhausr port 3, air intake opening 1 is connected with reduction valve 2, reduction valve 2 is connected with the first detection line, the second detection line respectively, and the first detection line, the second detection line are connected with exhausr port 3 respectively; First detection line comprises solenoid valve 1, six-way valve 14, water content detection module 4, decomposition product detection module 5, purity detecting module 6, solenoid valve 1 is connected with six-way valve 14, six-way valve 14 is connected with water content detection module 4, purity detecting module 6 respectively, purity detecting module 6 and water content detection module 4 switch air inlet by six-way valve 14, water content detection module 4 is connected with decomposition product detection module 5, and decomposition product detection module 5, purity detecting module 6 are connected with exhausr port 3 respectively; Second detection line comprises solenoid valve 2 16, mineral oil detection module 7, absorption cell 10, and solenoid valve 2 16 is connected with mineral oil detection module 7, and mineral oil detection module 7 is connected with absorption cell 10, and absorption cell 10 is connected with exhausr port 3; Absorption cell 10 comprises acidity detection module 8, hydrolyzable fluoride detection module 9, and absorption cell 10 inside is also provided with absorbing liquid.
Air intake opening 1 connects the first detection line, the second detection line respectively, its reason is: water content detection module 4, decomposition product detection module 5, purity detecting module 6 need adjust flux, current stabilization, and mineral oil detection module 7, acidity detection module 8, hydrolyzable fluoride detection module 9 relate to gas absorption process, pressure can be brought to change, affect gas flow rate.
Water content detection module 4 adopts capacitance-resistance method to detect; Decomposition product detection module 5 adopts electrochemical sensor to detect; Purity detecting module 6 adopts vapor-phase chromatography to detect; Mineral oil detection module 7 adopts the mineral oil in semi-permeable diaphragm absorption sulfur hexafluoride gas, then adopts infrared spectrum to detect; Acidity detection module 8, hydrolyzable fluoride detection module 9 are integrated in same absorption cell 10, use pH sensor and fluorine ion sensing device to measure respectively.
The bottom of absorption cell 10 is also connected with automatic sampler 11, leakage fluid dram 12; Automatic sampler 11 is used for quantitatively adding absorbing liquid; Leakage fluid dram 12 is used for discharging absorbing liquid.
The top of absorption cell 10 is also connected with pressure transducer 13, is used for showing the pressure in absorption cell 10 in real time; By the control with pressure that adds of absorbing liquid, can realize absorbing fast sulfur hexafluoride gas middle acid substance, hydrolyzable fluoride.
The present invention also proposes a kind of detection method utilizing sulfur hexafluoride gas quality scene detecting device integrated, comprises the steps:
SS1 absorbing liquid adds: open the automatic sampler 11 bottom absorption cell 10, pure water is added in absorption cell 10, after having cleaned, add the sodium hydroxide solution of setting given volume concentration, as the absorbing liquid of sulfur hexafluoride gas middle acid substance, hydrolyzable fluoride;
SS2 sulfur hexafluoride gas detects: open air inlet pipeline solenoid one, solenoid valve two, sulfur hexafluoride gas enters pick-up unit from air intake opening 1 point of two-way, start the measurement of moisture, decomposition product, purity, mineral oil, acidity, hydrolyzable content of fluoride simultaneously, after all completing, namely complete detection.
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. a sulfur hexafluoride gas quality scene is detecting device integrated, it is characterized in that, comprise air intake opening (1), reduction valve (2), the first detection line, the second detection line, exhausr port (3), described air intake opening (1) is connected with described reduction valve (2), described reduction valve (2) is connected with described first detection line, described second detection line respectively, and described first detection line, described second detection line are connected with described exhausr port (3) respectively, described first detection line comprises solenoid valve one (15), six-way valve (14), water content detection module (4), decomposition product detection module (5), purity detecting module (6), described solenoid valve one (15) is connected with described six-way valve (14), described six-way valve (14) respectively with described water content detection module (4), described purity detecting module (6) is connected, described water content detection module (4) is connected with described decomposition product detection module (5), described decomposition product detection module (5), described purity detecting module (6) is connected with described exhausr port (3) respectively, described second detection line comprises solenoid valve two (16), mineral oil detection module (7), absorption cell (10), described solenoid valve two (16) is connected with described mineral oil detection module (7), described mineral oil detection module (7) is connected with described absorption cell (10), and described absorption cell (10) is connected with described exhausr port (3), described absorption cell (10) comprises acidity detection module (8), hydrolyzable fluoride detection module (9), and described absorption cell (10) inside is also provided with absorbing liquid.
2. a kind of sulfur hexafluoride gas quality scene according to claim 1 is detecting device integrated, it is characterized in that, described water content detection module (4) adopts capacitance-resistance method to detect; Described decomposition product detection module (5) adopts electrochemical sensor to detect; Described purity detecting module (6) adopts vapor-phase chromatography to detect; Described mineral oil detection module (7) adopts the mineral oil in semi-permeable diaphragm absorption sulfur hexafluoride gas, then adopts infrared spectrum to detect; Described acidity detection module (8), described hydrolyzable fluoride detection module (9) are integrated in same described absorption cell (10), use pH sensor and fluorine ion sensing device to measure respectively.
3. a kind of sulfur hexafluoride gas quality scene according to claim 1 is detecting device integrated, it is characterized in that, the bottom of described absorption cell (10) is also connected with automatic sampler (11), leakage fluid dram (12); Described automatic sampler (11) is used for quantitatively adding absorbing liquid; Described leakage fluid dram (12) is used for discharging absorbing liquid.
4. a kind of sulfur hexafluoride gas quality scene according to claim 1 is detecting device integrated, it is characterized in that, the top of described absorption cell (10) is also connected with pressure transducer (13), is used for showing the pressure in absorption cell (10) in real time.
5. utilize the on-the-spot detecting device integrated detection method of the sulfur hexafluoride gas quality described in claim 1, it is characterized in that, comprise the steps:
SS1 absorbing liquid adds: the automatic sampler (11) opening absorption cell (10) bottom, pure water is added in absorption cell (10), after having cleaned, add the sodium hydroxide solution of setting given volume concentration, as the absorbing liquid of sulfur hexafluoride gas middle acid substance, hydrolyzable fluoride;
SS2 sulfur hexafluoride gas detects: open air inlet pipeline solenoid one, solenoid valve two, sulfur hexafluoride gas enters pick-up unit from air intake opening (1) point two-way, start the measurement of moisture, decomposition product, purity, mineral oil, acidity, hydrolyzable content of fluoride simultaneously, after all completing, namely complete detection.
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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 |
| CN107314984A (en) * | 2017-08-03 | 2017-11-03 | 国网安徽省电力公司电力科学研究院 | Multi-functional sulfur hexafluoride gas detection absorption plant |
| CN107321160A (en) * | 2017-08-03 | 2017-11-07 | 国网安徽省电力公司电力科学研究院 | Sulfur hexafluoride gas middle acid substance absorption plant |
| CN107328731A (en) * | 2017-08-03 | 2017-11-07 | 国网安徽省电力公司电力科学研究院 | Sulfur hexafluoride gas mineral oil in fluid content assaying method and device |
| CN107340266A (en) * | 2017-08-03 | 2017-11-10 | 国网安徽省电力公司电力科学研究院 | Sulfur hexafluoride gas detection absorption plant |
| CN107356464A (en) * | 2017-08-03 | 2017-11-17 | 国网安徽省电力公司电力科学研究院 | Hydrolyzable Absorption of Fluoride device in sulfur hexafluoride gas |
| CN107389589A (en) * | 2017-08-03 | 2017-11-24 | 国网安徽省电力公司电力科学研究院 | Detection absorption plant for sulfur hexafluoride gas |
| CN107561209A (en) * | 2017-08-03 | 2018-01-09 | 国网安徽省电力公司电力科学研究院 | Sulfur hexafluoride gas acidity detection method and device |
| CN108398366A (en) * | 2018-03-07 | 2018-08-14 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of power plant's compressed air gaseous mass comprehensive detection and analysis system and method |
| CN112305056A (en) * | 2020-10-08 | 2021-02-02 | 中船重工（邯郸）派瑞特种气体有限公司 | Device and method for measuring metal ions in high-purity hydrogen fluoride |
| CN114487206A (en) * | 2022-02-16 | 2022-05-13 | 中船(邯郸)派瑞特种气体股份有限公司 | High-purity gas online automatic detection device and application method thereof |
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| CN108398366A (en) * | 2018-03-07 | 2018-08-14 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of power plant's compressed air gaseous mass comprehensive detection and analysis system and method |
| CN112305056A (en) * | 2020-10-08 | 2021-02-02 | 中船重工（邯郸）派瑞特种气体有限公司 | Device and method for measuring metal ions in high-purity hydrogen fluoride |
| CN112305056B (en) * | 2020-10-08 | 2022-12-27 | 中船(邯郸)派瑞特种气体股份有限公司 | Device and method for measuring metal ions in high-purity hydrogen fluoride |
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