CN106442029A - SF6 sampling device for GIS equipment - Google Patents
SF6 sampling device for GIS equipment Download PDFInfo
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- CN106442029A CN106442029A CN201610808660.1A CN201610808660A CN106442029A CN 106442029 A CN106442029 A CN 106442029A CN 201610808660 A CN201610808660 A CN 201610808660A CN 106442029 A CN106442029 A CN 106442029A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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Abstract
The invention provides an SF6 sampling device for GIS equipment. The SF6 sampling device is characterized by comprising a gas washing and taking system and a recovering system, wherein the gas washing and taking system comprises a gas channel switching system arranged in a small instrument box as well as a pressure displaying system and a gas channel controlling assembly; a gas inlet of the gas channel switching system is connected with an inlet needle valve and an inlet three-way valve sequentially through a connecting gas channel, one way of the other two ways of the inlet three-way valve is connected with a second negative-pressure meter, a gas taking cylinder, an outlet three-way valve and an outlet needle valve sequentially, and the other way is connected with a first negative-pressure meter and a gas washing cylinder sequentially and connected to the outlet three-way valve finally; the recovering system comprises a switching valve, a filter, a vacuum pump and a recovering steel cylinder which are sequentially connected and is used for recovering an SF6 sample from the gas washing and taking system. The SF6 sample in field GIS equipment can be conveniently collected to be subjected to component analysis on a special chromatographic instrument in a laboratory, and the problems of difficulties in gas taking and analyzing are solved.
Description
Technical field
The present invention relates to a kind of gas sampling assembly, a kind of SF for GIS device is particularly disclosed6Gas sampling fills
Put, be a kind of SF of representative sulfur hexafluoride causing trouble in energy collection site GIS device6The gas sample of sample gas
Device, is then sent through on the special chromatograph in laboratory carrying out gas composition analysis after convenient collection.
Background technology
SF6There is good electrical insulation properties and excellent arc extinction performance, be a kind of better than new between air and oil
Generation super-pressure insulating dielectric materials.Electrical industry using its very high dielectric strength and good arc performance of going out, as high pressure
The insulating materials of switch, high-power transformer, high-tension cable and gas.But, sulfur hexafluoride gas are in the electrical apparatus through electricity
Dizzy, spark and arcing, also can produce multiple poisonous, corrosive gas and solid decomposition product, such as：Fluorination thionyl, fluorine
Change sulfonyl, hydrogen sulfide, sulfur dioxide etc..So, the electrical equipment containing sulfur hexafluoride gas must be sampled detect.
But SF6Device distribution, in each scene, equipment dispersion and substantial amounts, is carried out individually for the equipment having situation
Sample collection and analyze be detection SF6Whether abnormal important means of equipment.But, common for prior art
Sampler for, due to taking gas cylinder inwall for decomposing sulfide out, fluoride can produce irreversible absorption and make
With so that the very low catabolite of script content cannot really be analyzed.Additionally, the sampling process of prior art is led to
It is often that the gas of gas washing is directly emptied, such operation is unfavorable for environmental protection very much, causes environmental pollution.Therefore, how to take
Obtain real sulfur hexafluoride sample gas and enable Instrumental Analysis, SF during down-sampling6The discharge of sample gas, designs one
Suitable gas sampling assembly is particularly important.
Content of the invention
Present invention aim to address the defect of prior art, design a kind of SF for GIS device6Gas sampling fills
Put, the SF that can facilitate, truly collect in live GIS device6Sample gas carry out group on the special chromatograph in laboratory
Analysis, largely solves the problems, such as to take gas hardly possible, analysis difficult.
The present invention is realized in：A kind of SF for GIS device6Gas sampling assembly it is characterised in that：Described
Sampling apparatus includes washing air-taking system and recovery system, and described air-taking system of washing includes being arranged in a miniature instrument case
Gas circuit switched system, pressure display system and gas circuit control assembly, the gas feed of described gas circuit switched system is passed through to connect gas
Road is linked in sequence an import needle-valve and an import triple valve, and in the another two-way of described import triple valve, a road is linked in sequence
Two vacuum tables, take gas cylinder, outlet triple valve and vent needle valve, another road is linked in sequence the first vacuum table and Drexel bottle, finally connects
It is connected to outlet triple valve, pass through the corresponding gas circuit that connects between each part and connect, and gas is realized by described gas circuit control assembly
Road switching control, described recovery system includes switch valve, filter, vavuum pump and the recovery steel cylinder being linked in sequence, described
Sampling apparatus when being reclaimed and being vacuumized work, switch valve one end of described recovery system is connected to institute by connecting gas circuit
State the gas vent of the vent needle valve one end washing air-taking system, described in recovery, wash the SF in air-taking system6Sample gas, prevent SF6Sample
The air pollution that the emptying of product gas causes.
It is respectively used to show described Drexel bottle and take the first vacuum table of storage pressure, the second vacuum table to be arranged at described instrument
On the panel of electricity box, described instrument box panel is also respectively provided with valve handle, the valve of import triple valve of described import needle-valve
Handle, the outlet valve handle of triple valve and the valve handle of vent needle valve, and gas feed and gas vent, described gas feed is gentle
Body exports as stainless steel snap joint, is in normally off when being not connected to outer gas circuit, gas feed and gas vent another
End is connected with vent needle valve with import needle-valve respectively.
The described gas cylinder that takes is pressure vessel, takes gas cylinder using 316L stainless steel, and bottle top is provided with two 3mm length
Gas circuit pipe respectively as taking gas cylinder air inlet and take gas cylinder gas outlet, the described bottle inwall taking gas cylinder through polishing, cleaning and
Coating treatment, described coating treatment is that even application, inside bottle, and is dried after solvent dissolves alkylthio group compound
Form alkylthio group compound coat, described alkylthio group compound coat be evenly distributed in described in take the bottle inwall of gas cylinder,
Described alkylthio group compound coat greatly reduces the absorption of sulfide.
Described Drexel bottle adopts 316L stainless steel Drexel bottle, and its inwall is through polishing, cleaning treatment, described Drexel bottle
Bottle top is provided with the gas circuit pipe of two 3mm length as Drexel bottle air inlet and Drexel bottle gas outlet.
The invention has the beneficial effects as follows：The present invention devises one kind and is used for gathering SF in GIS device6The sampling dress of sample gas
Put, sampling apparatus of the present invention accurately can specify the SF in GIS device by collection in worksite6Sample gas, and compact conformation, are easy to carry
Return lab analysis SF6The content of various components in sample gas, thus judging the operation conditions of GIS device, accident analysis being carried
For powerful foundation.Sampling apparatus of the present invention is reasonable in design, using Drexel bottle, temporarily stores used by purging connecting line
SF6Sample gas are it is therefore prevented that SF6Discharge, it is to avoid pollution environment.And greatly reduce the infiltration of air, especially take gas
The alkylthio group compound coat design of bottle inwall, effectively prevent SF6The absorption of characteristic component in sample gas, thus enhance
The reliability of analysis result.
Brief description
Fig. 1 is process of gas path block diagram when sampling apparatus of the present invention reclaims and vacuumizes.
Fig. 2 is process of gas path block diagram during gas washing of the present invention.
Fig. 3 is that the present invention takes process of gas path block diagram during gas.
Fig. 4 is that the present invention carries out SF6Process of gas path block diagram during sample gas analysis.
In figure：1st, import needle-valve；2nd, import triple valve；3rd, the first vacuum table；4th, the second vacuum table；5th, export threeway
Valve；6th, vent needle valve；7th, switch valve.
Specific embodiment
With reference to the accompanying drawings 1, a kind of SF for GIS device of the present invention6Gas sampling assembly, including washing air-taking system and recovery
System, described wash the gas circuit switched system that air-taking system includes being arranged in a miniature instrument case, pressure display system and
Gas circuit control assembly.The gas feed of described gas circuit switched system is linked in sequence an import needle-valve 1 and by connecting gas circuit
Individual import triple valve 2, in the another two-way of described import triple valve 2 road be linked in sequence the second vacuum table 4, take gas cylinder, outlet three
Port valve 5 and vent needle valve 6, another road is linked in sequence the first vacuum table 3 and Drexel bottle, is finally coupled to export triple valve 5.Each portion
Pass through the corresponding gas circuit that connects between part to connect, and gas circuit switching control is realized by described gas circuit control assembly.Described returns
Receipts system includes switch valve 7, filter, vavuum pump and the recovery steel cylinder being linked in sequence.Reclaimed in described sampling apparatus
And when vacuumizing work, switch valve one end of described recovery system is connected to the described outlet washing air-taking system by connecting gas circuit
The gas vent of needle-valve one end, washes the SF in air-taking system described in recovery6Sample gas, prevent SF6The sky that the emptying of sample gas causes
Gas pollutes.
The concrete operation step of sampling apparatus of the present invention is as follows：
1st, reclaim and vacuumize：When carrying out reclaimer operation, as shown in Figure 1, outlet triple valve 5 selects gas circuit to switch to take respectively
Gas cylinder and Drexel bottle, gas vent is connected with switch valve 7 one end of recovery system, and the outlet of vavuum pump is connected and reclaimed steel cylinder,
Import needle-valve 1 is closed, and vent needle valve 6 is opened, open vavuum pump and reclaim steel cylinder cylinder valve, be extracted into vavuum pump extreme negative pressure it
Afterwards, close vent needle valve 6, close vavuum pump and recovery steel cylinder cylinder valve completes to operate.When carrying out vacuum pumping, such as accompanying drawing 1
Shown, outlet triple valve 5 selects gas circuit to switch to respectively and takes gas cylinder and Drexel bottle, by the switch valve of gas vent and recovery system
7 one end are connected, and the outlet of vavuum pump connects emptying, and import needle-valve 1 is closed, and vent needle valve 6 is opened, and is extracted into the extreme negative pressure of vavuum pump
Afterwards, close vent needle valve 6.Then it is blown into helium at gas feed, control helium to respectively enter using import triple valve 2 and wash
Gas cylinder and take gas cylinder, utilizes import needle-valve 1 to control helium gas flow simultaneously, prevents Drexel bottle and take gas pressure of the inside of a bottle to rise rapidly.
When the first vacuum table 3, the second vacuum table 4 show respectively Drexel bottle and take the helium pressure in gas cylinder to 0.4MPa about when close
Import needle-valve 1, opens the switch valve 7 of vent needle valve 6 and recovery system, controls outlet triple valve 5 respectively to Drexel bottle with take gas
Bottle is vacuumized.Said process 2～3 times is it is ensured that take gas cylinder and Drexel bottle all to clean up repeatedly, and is in vacuum state.
2nd, gas washing and take gas：During execute-in-place, need to connect the gas feed of sampling apparatus and GIS device to be sampled
Good, import triple valve 2 selects to connect Drexel bottle direction, opens import needle-valve 1, keeps gas washing bottle pressure lentamente to increase, such as attached
Shown in Fig. 2.After the first vacuum table 3 display gas washing pressure of the inside of a bottle rises to 0.3MPa, the air in connection gas circuit is substantially by SF6
Sample gas are cleaned.Then rotating inlet triple valve 2, the SF in GIS device6Sample gas can take gas cylinder because pressure differential enters into
In, as shown in Figure 3.When the second vacuum table 4 display takes gas pressure of the inside of a bottle to rise to 0.3MPa, sampling terminates, and closes import
Needle-valve 1, makes sampling apparatus be in sealing state.
3rd, sample analysis：Carry out SF6During sample gas analysis, the gas first connecting gas chromatograph to sampling apparatus goes out
Mouthful, by vent needle valve 6 to SF6The rate of discharge of sample gas is controlled, by SF6Sample gas are sent into gas chromatograph and are carried out point
Analysis, as shown in Figure 4.After gas analysis terminates, close vent needle valve 6, disconnect the connection of sampling apparatus and gas chromatograph, then
Switch valve 7 one end of recovery system is connected to gas vent, using the sulfur hexafluoride to residual in sampling apparatus for the recovery system
Gas carries out reclaimer operation, prevents SF6Emptying and leakage, reduce pollution to environment.
Claims (4)
1. a kind of SF for GIS device6Gas sampling assembly it is characterised in that：Described sampling apparatus includes washing air-taking system
And recovery system, described wash the gas circuit switched system that air-taking system includes being arranged in a miniature instrument case, pressure shows
System and gas circuit control assembly, the gas feed of described gas circuit switched system is linked in sequence an import needle-valve by connecting gas circuit
With an import triple valve, in the another two-way of described import triple valve a road be linked in sequence the second vacuum table, take gas cylinder, outlet three
Port valve and vent needle valve, another road is linked in sequence the first vacuum table and Drexel bottle, is finally coupled to export triple valve, between each part
Connected by the corresponding gas circuit that connects, and gas circuit switching control is realized by described gas circuit control assembly, described recovery system
System includes switch valve, filter, vavuum pump and the recovery steel cylinder being linked in sequence, and is reclaimed in described sampling apparatus and is taken out true
During empty work, switch valve one end of described recovery system is connected to the described vent needle valve one washing air-taking system by connecting gas circuit
The gas vent at end, washes the SF in air-taking system described in recovery6Sample gas.
2. a kind of SF for GIS device according to claim 16Gas sampling assembly it is characterised in that：Use respectively
In showing described Drexel bottle and take the first vacuum table of storage pressure, the second vacuum table to be arranged on the panel of described instrument box,
The valve handle of described import needle-valve, the valve handle of import triple valve, outlet triple valve are also respectively provided with described instrument box panel
Valve handle and vent needle valve valve handle, and gas feed and gas vent, described gas feed and gas vent are stainless
Steel snap joint, is in normally off when being not connected to outer gas circuit, and the other end of gas feed and gas vent is respectively and import
Needle-valve is connected with vent needle valve.
3. a kind of SF for GIS device according to claim 16Gas sampling assembly it is characterised in that：Described
Take gas cylinder to be pressure vessel, gas cylinder taken using 316L stainless steel, bottle top be provided with the gas circuit pipe of two 3mm length respectively as
Take gas cylinder air inlet and take gas cylinder gas outlet, the described bottle inwall taking gas cylinder is through polishing, cleaning and coating treatment, described
Coating treatment is that even application in bottle inside and is dried after carbon tetrachloride solvent dissolves alkylthio group compound, forms alkane sulphur
Based compound coating, described alkylthio group compound coat be evenly distributed in described in take the bottle inwall of gas cylinder, described alkane
Sulfur-based compound coating can reduce the absorption of sulfide.
4. a kind of SF for GIS device according to claim 16Gas sampling assembly it is characterised in that：Described
Drexel bottle adopts 316L stainless steel Drexel bottle, and through polishing, cleaning treatment, the bottle top of described Drexel bottle is provided with two to its inwall
The gas circuit pipe of root 3mm length is as Drexel bottle air inlet and Drexel bottle gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808660.1A CN106442029A (en) | 2016-09-08 | 2016-09-08 | SF6 sampling device for GIS equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610808660.1A CN106442029A (en) | 2016-09-08 | 2016-09-08 | SF6 sampling device for GIS equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106442029A true CN106442029A (en) | 2017-02-22 |
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ID=58164261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610808660.1A Pending CN106442029A (en) | 2016-09-08 | 2016-09-08 | SF6 sampling device for GIS equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN106442029A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490402A (en) * | 2017-05-09 | 2017-12-19 | 安徽环美智能科技有限公司 | A kind of atmospheric environment intelligent monitor system |
| CN108387411A (en) * | 2018-05-24 | 2018-08-10 | 夏文斌 | A kind of gas sampling assembly for acquiring car air conditioner refrigerant |
| CN109141989A (en) * | 2017-06-16 | 2019-01-04 | 中国石油化工股份有限公司 | Shale resolution gas automatic ration sampling apparatus |
Citations (6)
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| JPH08201241A (en) * | 1995-01-20 | 1996-08-09 | Shimadzu Corp | Sampling apparatus |
| CN201348579Y (en) * | 2009-01-14 | 2009-11-18 | 重庆电力科学试验研究院 | Sulfur hexafluoride sample collection device |
| CN201575947U (en) * | 2009-09-01 | 2010-09-08 | 陕西电力科学研究院 | Environment-friendly anti-pollution SF6 collection and detection device |
| CN202216864U (en) * | 2011-09-22 | 2012-05-09 | 河南中分仪器股份有限公司 | Portable multifunctional sf6 gas sampling device |
| CN205228896U (en) * | 2015-12-12 | 2016-05-11 | 广东电网有限责任公司江门供电局 | Gaseous test sampling device of multi -functional SF6 |
| 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 |
-
2016
- 2016-09-08 CN CN201610808660.1A patent/CN106442029A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08201241A (en) * | 1995-01-20 | 1996-08-09 | Shimadzu Corp | Sampling apparatus |
| CN201348579Y (en) * | 2009-01-14 | 2009-11-18 | 重庆电力科学试验研究院 | Sulfur hexafluoride sample collection device |
| CN201575947U (en) * | 2009-09-01 | 2010-09-08 | 陕西电力科学研究院 | Environment-friendly anti-pollution SF6 collection and detection device |
| CN202216864U (en) * | 2011-09-22 | 2012-05-09 | 河南中分仪器股份有限公司 | Portable multifunctional sf6 gas sampling device |
| CN205228896U (en) * | 2015-12-12 | 2016-05-11 | 广东电网有限责任公司江门供电局 | Gaseous test sampling device of multi -functional SF6 |
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490402A (en) * | 2017-05-09 | 2017-12-19 | 安徽环美智能科技有限公司 | A kind of atmospheric environment intelligent monitor system |
| CN109141989A (en) * | 2017-06-16 | 2019-01-04 | 中国石油化工股份有限公司 | Shale resolution gas automatic ration sampling apparatus |
| CN108387411A (en) * | 2018-05-24 | 2018-08-10 | 夏文斌 | A kind of gas sampling assembly for acquiring car air conditioner refrigerant |
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Application publication date: 20170222 |
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