CN205301017U - A on --spot sampling device for SF6 gas analysis - Google Patents
A on --spot sampling device for SF6 gas analysis Download PDFInfo
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- CN205301017U CN205301017U CN201521116833.0U CN201521116833U CN205301017U CN 205301017 U CN205301017 U CN 205301017U CN 201521116833 U CN201521116833 U CN 201521116833U CN 205301017 U CN205301017 U CN 205301017U
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Abstract
The utility model relates to an on - -spot sampling device for SF6 gas analysis, its characterized in that: the sampling device include evacuating device and get the gas pitcher, evacuating device is one and is equipped with minipump and gas circuit switched systems, pressure display system and circuit system's meter box, the vacuum pump passes through the connecting pipe and connects a three -way valve, the three -way valve in addition two the tunnel what connect is that the helium sweeps the gas circuit and gets the gas pitcher gas circuit, the corresponding gas circuit of switching intercommunication through the three -way valve, pressure display system adopts the pressure condition among the manometer measurement system on getting the gas pitcher gas circuit that sets up, it is pressure vessel to get the gas pitcher, jar body upper portion is equipped with intake pipe and outlet duct, jar body three -way valve of intake -tube connection, a stop valve is connected to the outlet duct, carry out the evacuation during operation to getting the gas pitcher, the two tunnel what connect is evacuating device and unloading gas circuit to jar body three -way valve in addition, two the tunnel what connect is GIS equipment and unloading gas circuit in addition for the during operation of sampling, jar body three -way valve, and gas chromatograph is connected to the stop valve.
Description
Technical field
This utility model relates to the sampling apparatus of a kind of gas chromatograph, and particularly open one is for SF6The spot sampling device of gas analysis, it is possible to be easy to take scene to, takes gas from GIS device and stores, and is applicable not only to the situation that spot sampling is analyzed, is also applied for lab analysis sample collecting.
Background technology
SF6There is the arc extinction performance of good electrical insulation properties and excellence. Its electric strength is 2.5 times of nitrogen under same pressure, and breakdown voltage is 2.5 times of air, and arc extinguishing ability is 100 times of air, is a kind of supertension insulating dielectric materials of new generation being better than between air and oil. Electrical industry utilizes its significantly high dielectric strength and good arc performance of going out, as the insulant of high-voltage switch gear, high-power transformer, high tension cable and gas. Conventional chromatographic SF in test6The content of the gas produced due to various reactions in insulation gas. But GIS device is distributed in each scene, equipment dispersion and substantial amounts, carries out independent sample collecting for the equipment having situation and analysis is the important means whether detection GIS device is abnormal. SF in GIS device6Comprising various sulfide and fluoride in catabolite, some products easily decompose and adsorb, so in sampling process, it is prevented that the entrance of air and the absorption preventing characteristic gas are two important problems. Therefore, it is necessary for arranging a set of special sampler, and it should prevent from causing decomposition product in inclusion of air sample gas, has good anti-adsorptivity again, enables the gas of trace to be detected by gas chromatograph.
Summary of the invention
The purpose of this utility model is the defect solving prior art, and design one is for SF6The spot sampling device of gas analysis, designs exclusively for GIS device, it is possible to the SF in collection site GIS device6Sample gas, sample effect is good, and is easy to carry.
This utility model is achieved in that a kind of for SF6The spot sampling device of gas analysis, it is characterized in that: described sampling apparatus includes vacuum extractor and takes gas tank, described vacuum means is set to one equipped with minipump and gas circuit switched system, the instrument box of pressure display system and Circuits System, described vacuum pump connects a three-way valve by connecting tube, what described three-way valve two other road connected is helium purge gas circuit and takes gas tank gas circuit, corresponding gas circuit is connected by the switching of three-way valve, described pressure display system adopts the pressure condition being arranged in the gauge measurement system taken in gas tank gas circuit, the described gas tank that takes is pressure vessel, tank body top is provided with air inlet pipe and escape pipe, described air inlet pipe connects a tank body three-way valve, described escape pipe connects a stop valve, to take gas tank carry out evacuation work time, what described tank body three-way valve two other road connected is vacuum extractor and emptying gas circuit, when carrying out sampling work, what described tank body three-way valve two other road connected is GIS device and emptying gas circuit, and described stop valve connects gas chromatograph.
Described Circuits System includes 220V power input interface and vacuum pump switch, and described instrument box is configured with stainless steel faceplate, distribution pressure table on panel, three-way valve valve handle, power input interface, air-path interface and vacuum pump switch. Described Pressure gauge is vacuum table.
The described gas tank that takes is cylinder pressure container, and tank interior is through polishing, cleaning and anti-adsorption treatment. The described gas tank that takes adopts 316L rustless steel to make tank body, tank body thickness is 2.5mm, inside diameter is 70mm, height 100mm, volume is 0.36L, air inlet pipe that described tank body top is arranged and escape pipe are stretch out tank body 40mm and gas circuit pipe that external diameter is 6mm, and air inlet pipe length in tank body is 80mm, and escape pipe length in tank body is 20mm.
Described vacuum pump is fixed on bottom instrument box, and is furnished with cushion.
It is so operation during utility model works: first under lab carry out evacuation purge to taking gas tank, switch on power, tank body three-way valve is chosen and is taken gas tank and be connected with vacuum extractor, the stop valve of tank body is closed, after being extracted into setting negative pressure, switching gas circuit utilizes helium purge, the stop valve of tank body is opened, so 2��3 times repeatedly, guarantee that taking gas in gas tank (including the gas in the connecting line taking between gas tank and vacuum extractor) all removes, tank body three-way valve is in closed tank state, stop valve is closed, to keep the negative pressure taking in gas tank. during field investigation and sampling operation, it is necessary to first connect and take gas tank and GIS device, after purging connecting line a period of time by sample gas, rotating vessel three-way valve, the gas in GIS device can take in gas tank owing to pressure differential enters into, until pressure balance. after having sampled, rotating vessel three-way valve, make to take gas tank and be in sealing state, sample end-of-job. when needing sample gas is analyzed, connection takes gas tank and sample gas can be analyzed by correlation analysis equipment.
The beneficial effects of the utility model are: this utility model designs exclusively for GIS device, it is possible to the SF in collection site GIS device6Sample gas, it is simple to utilize the content of special color spectrometer analysis wherein various components, thus providing powerful foundation to the operation conditions of judgment device, accident analysis. This utility model sampling apparatus is reasonable in design, greatly reduces the infiltration of air, effectively prevent the absorption of characteristic component, thus enhancing the reliability analyzing result so that whole chromatography process is more safe and effective.The sample gas gathered is possible not only on portable gas chromatograph to carry out gas analysis, it is also possible to takes back and carries out component analysis on the special color spectrometer of laboratory, largely solves and takes gas difficulty, analyzes difficult problem.
Accompanying drawing explanation
Fig. 1 is that this utility model sampling apparatus carries out annexation schematic diagram when evacuation works to taking gas tank.
Fig. 2 is that this utility model sampling apparatus carries out annexation schematic diagram during sampling work.
In figure: 1, instrument box; 2, vacuum pump; 3, three-way valve; 4, Pressure gauge; 5, gas tank is taken; 6, tank body three-way valve; 7, stop valve; 8, emptying gas circuit; 9, helium purge gas circuit; 10, air inlet pipe; 11, escape pipe; 12, GIS device; 13, gas chromatograph.
Detailed description of the invention
With reference to the accompanying drawings 1 and accompanying drawing 2, this utility model one is used for SF6The spot sampling device of gas analysis includes vacuum extractor and takes gas tank 5, and described vacuum means is set to an instrument box 1 equipped with minipump 2 and gas circuit switched system, pressure display system and Circuits System. Described vacuum pump 2 is fixed on bottom instrument box 1, and is furnished with cushion. Described vacuum pump 2 connects a three-way valve 3 by connecting tube, and what described three-way valve 3 two other road connected is helium purge gas circuit 9 and takes gas tank gas circuit, connects corresponding gas circuit by the switching of three-way valve 3. Described pressure display system adopts the pressure condition being arranged in the Pressure gauge 4 measurement system taken in gas tank gas circuit. Described takes gas tank 5 for pressure vessel, and tank body top is provided with air inlet pipe 10 and escape pipe 11, and described air inlet pipe 10 connects a tank body three-way valve 6, and described escape pipe connects a stop valve 7. To take gas tank carry out evacuation work time, what described tank body three-way valve 6 two other road connected is vacuum extractor and emptying gas circuit 8. When carrying out sampling work, what described tank body three-way valve 6 two other road connected is GIS device 12 and emptying gas circuit 8, and described stop valve 7 connects gas chromatograph 13.
Described Circuits System includes 220V power input interface and vacuum pump switch. Described instrument box 1 is configured with stainless steel faceplate, distribution pressure table on panel, three-way valve valve handle, power input interface, air-path interface and vacuum pump switch. Described Pressure gauge adopts vacuum table, the pressure condition in accurate display system.
Described takes gas tank 5 for cylinder pressure container, and tank interior is through polishing, cleaning and anti-adsorption treatment. The described gas tank 5 that takes adopts 316L rustless steel to make tank body, tank body thickness is 2.5mm, inside diameter is 70mm, height 100mm, volume is 0.36L, air inlet pipe 10 that described tank body top is arranged and escape pipe 11 are stretch out tank body 40mm and gas circuit pipe that external diameter is 6mm, and the air inlet pipe 10 length in tank body is 80mm, and the escape pipe 11 length in tank body is 20mm.
It is so operation during utility model works: first under lab carry out evacuation purge to taking gas tank 5, switch on power, tank body three-way valve 6 is chosen and is taken gas tank 5 and be connected with vacuum extractor, the stop valve 7 of tank body is closed, after being extracted into setting negative pressure, gas circuit is switched over by three-way valve 3, helium purge gas circuit air inlet, helium is utilized to purge, the stop valve 7 of tank body is opened, so 2��3 times repeatedly, guarantee to take gas in gas tank 5 (including taking the gas in the connecting line between gas tank 5 and vacuum extractor) all to remove, tank body three-way valve 6 is in closed tank state, stop valve 7 is closed, to keep the negative pressure taking in gas tank 5.During field investigation and sampling operation, it is necessary to first connect and take gas tank 5 and GIS device 12, after purging connecting line a period of time by sample gas, rotating vessel three-way valve 6, the gas in GIS device 12 can take in gas tank 5 owing to pressure differential enters into, until pressure balance. After having sampled, rotating vessel three-way valve 6, make to take gas tank 5 and be in sealing state, sample end-of-job. When needing sample gas is analyzed, connection takes gas tank 5 and sample gas can be analyzed by gas chromatograph 13.
Claims (6)
1. one kind is used for SF6The spot sampling device of gas analysis, it is characterized in that: described sampling apparatus includes vacuum extractor and takes gas tank, described vacuum means is set to one equipped with minipump and gas circuit switched system, the instrument box of pressure display system and Circuits System, described vacuum pump connects a three-way valve by connecting tube, what described three-way valve two other road connected is helium purge gas circuit and takes gas tank gas circuit, corresponding gas circuit is connected by the switching of three-way valve, described pressure display system adopts the pressure condition being arranged in the gauge measurement system taken in gas tank gas circuit, the described gas tank that takes is pressure vessel, tank body top is provided with air inlet pipe and escape pipe, described air inlet pipe connects a tank body three-way valve, described escape pipe connects a stop valve, to take gas tank carry out evacuation work time, what described tank body three-way valve two other road connected is vacuum extractor and emptying gas circuit, when carrying out sampling work, what described tank body three-way valve two other road connected is GIS device and emptying gas circuit, and described stop valve connects gas chromatograph.
2. according to claim 1 for SF6The spot sampling device of gas analysis, it is characterized in that: described Circuits System includes 220V power input interface and vacuum pump switch, described instrument box is configured with stainless steel faceplate, distribution pressure table on panel, three-way valve valve handle, power input interface, air-path interface and vacuum pump switch.
3. according to claim 1 and 2 for SF6The spot sampling device of gas analysis, it is characterised in that: described Pressure gauge is vacuum table.
4. according to claim 1 for SF6The spot sampling device of gas analysis, it is characterised in that: the described gas tank that takes is cylinder pressure container, and tank interior is through polishing, cleaning and anti-adsorption treatment.
5. according to claim 1 or 4 for SF6The spot sampling device of gas analysis, it is characterized in that: the described gas tank that takes adopts 316L rustless steel to make tank body, tank body thickness is 2.5mm, inside diameter is 70mm, height 100mm, volume is 0.36L, and air inlet pipe that described tank body top is arranged and escape pipe are stretch out tank body 40mm and gas circuit pipe that external diameter is 6mm, air inlet pipe length in tank body is 80mm, and escape pipe length in tank body is 20mm.
6. according to claim 1 for SF6The spot sampling device of gas analysis, it is characterised in that: described vacuum pump is fixed on bottom instrument box, and is furnished with cushion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521116833.0U CN205301017U (en) | 2015-12-30 | 2015-12-30 | A on --spot sampling device for SF6 gas analysis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521116833.0U CN205301017U (en) | 2015-12-30 | 2015-12-30 | A on --spot sampling device for SF6 gas analysis |
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| CN205301017U true CN205301017U (en) | 2016-06-08 |
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| CN201521116833.0U Active CN205301017U (en) | 2015-12-30 | 2015-12-30 | A on --spot sampling device for SF6 gas analysis |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651565A (en) * | 2015-12-30 | 2016-06-08 | 上海华爱色谱分析技术有限公司 | Field sampling device for SF6 gas analysis |
| CN108152439A (en) * | 2017-12-22 | 2018-06-12 | 大连英蕴科技有限公司 | A kind of ship detects the method for sampling with air inlet desalination |
| US11779029B2 (en) * | 2016-12-05 | 2023-10-10 | Pace International Llc | Method and system for the treatment of agricultural products |
-
2015
- 2015-12-30 CN CN201521116833.0U patent/CN205301017U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651565A (en) * | 2015-12-30 | 2016-06-08 | 上海华爱色谱分析技术有限公司 | Field sampling device for SF6 gas analysis |
| US11779029B2 (en) * | 2016-12-05 | 2023-10-10 | Pace International Llc | Method and system for the treatment of agricultural products |
| CN108152439A (en) * | 2017-12-22 | 2018-06-12 | 大连英蕴科技有限公司 | A kind of ship detects the method for sampling with air inlet desalination |
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