CN102590419B - Device used for analyzing mixed gas in expansion tank of power transformer and based on gas chromatographic technology - Google Patents
Device used for analyzing mixed gas in expansion tank of power transformer and based on gas chromatographic technology Download PDFInfo
- Publication number
- CN102590419B CN102590419B CN201210030395.0A CN201210030395A CN102590419B CN 102590419 B CN102590419 B CN 102590419B CN 201210030395 A CN201210030395 A CN 201210030395A CN 102590419 B CN102590419 B CN 102590419B
- Authority
- CN
- China
- Prior art keywords
- transformer
- gas
- way valve
- installation
- thermal conductivity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005516 engineering process Methods 0.000 title abstract description 5
- 239000007789 gas Substances 0.000 claims abstract description 76
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000001257 hydrogen Substances 0.000 claims abstract description 19
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims description 31
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 15
- 239000012159 carrier gas Substances 0.000 claims description 14
- 238000004587 chromatography analysis Methods 0.000 claims description 13
- 239000002808 molecular sieve Substances 0.000 claims description 13
- 239000003513 alkali Substances 0.000 claims description 7
- 239000010425 asbestos Substances 0.000 claims description 7
- 229910052895 riebeckite Inorganic materials 0.000 claims description 7
- 238000001514 detection method Methods 0.000 abstract description 17
- 230000035945 sensitivity Effects 0.000 abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004452 microanalysis Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000006199 nebulizer Substances 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
A device used for analyzing mixed gas in an expansion tank of a power transformer and based on gas chromatographic technology belongs to the technical field of electric power device state detection and comprises a transformer expansion tank, a vacuum pump (18), a ten-way valve (11) and a chromatographic column chamber (13). The device is characterized in that the transformer expansion tank is connected with the ten-way valve (11), the ten-way valve (11) is connected with a thermal conductivity detector (10) and the chromatographic column chamber (13) simultaneously, the thermal conductivity detector (10) is connected with a gas carrying bottle (3), the chromatographic column chamber (13) is connected with a hydrogen flame detector (17) through a reformer (16), and two openings of the hydrogen flame detector (17) are connected with an auxiliary gas bottle (4) and a combustion-supporting gas bottle (5) respectively. The device used for analyzing the mixed gas in the expansion tank of the power transformer and based on the gas chromatographic technology can be used for detecting various fault signature gas on line or on the site for large-scale power transformers and is high in sensitivity and precision and good in reliability.
Description
Technical field
Analysing mixed device in power transformer conservator based on gas chromatographic technique, belongs to status of electric power detection technique field, and this device is specifically designed to the mixed gas in power transformer conservator is carried out to stratographic analysis.
Background technology
Large-scale power transformer is one of equipment most important, the most expensive in power transmission and transformation system, the quality of its insulation status, and can be related to electric system move safely and reliably.To Gases Dissolved in Transformer Oil analysis, i.e. large quantity research and the practice of DGA shows, the H dissolving in transformer oil both at home and abroad
2, CH
4, C
2h
2, C
2h
4, C
2h
6, CO and CO
2it etc. the ratio between content, gas production rate and the content thereof of gas componant, is the authentic communication of reflection transformer built-in electrical insulation state, can find sensitiveer and exactly latent transformer defect and fault, generally believe that it is the powerful measure of the transformer insulated fault of diagnosis that DGA detects, DGA pick-up unit is arranged on operating transformer body, gas in field real-time acquisition and detection installation for transformer becomes a focus in this field, and how to improve sensitivity and the precision of Site Detection, make it more reliable, become a urgent problem.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, provide a kind of can be for or Site Detection various fault characteristic gases online to large-scale power transformer, highly sensitive, precision is high and the power transformer conservator based on gas chromatographic technique of good reliability in analysing mixed device.
The technical solution adopted for the present invention to solve the technical problems is: be somebody's turn to do analysing mixed device in the power transformer conservator based on gas chromatographic technique, comprise installation for transformer, vacuum pump, ten-way valve and chromatogram column compartment, it is characterized in that: installation for transformer is connected with ten-way valve, ten-way valve connects thermal conductivity detector (TCD) and chromatogram column compartment simultaneously, thermal conductivity detector (TCD) connects carrier gas bottle, chromatogram column compartment connects hydrogen flame detector by reburner, and two openings of hydrogen flame detector are connected to respectively auxiliary gas cylinder and combustion-supporting gas cylinder.Reburner is located in independent confined space, in temperature, is at 360 ℃, utilizes the catalytic action of nickel, by CO and CO
2be replaced as CH
4, like this, hydrogen flame detector just can react with it, detects its concentration, reaches and detects CO, CH simultaneously
4and CO
2the object of three kinds of gases, the signal after detection changes electric signal into, then through the recording pointer chromatographic peak that runs a curve, is calculated the content of tested gas each component by chromatographic peak.
In described chromatogram column compartment, be provided with 5A molecular sieve and TDX-01 post, 5A molecular sieve one end connects ten-way valve by alkali asbestos post, and the other end connects thermal conductivity detector (TCD), and thermal conductivity detector (TCD) connects carrier gas bottle by clarifier, TDX-01 post one end connects ten-way valve, and the other end connects reburner.Thermal conductivity detector (TCD) is to have the thermal conductivity coefficient different with carrier gas according to different material, when the gas by thermal conductance and concentration thereof change, will take away the heat not waiting from thermal sensing element wherein, cause the variation of its resistance, by electric bridge, can measure the resistance of variation, 5A molecular sieve is for separating of O
2and N
2, gas detects its content by thermal conductivity detector (TCD), and TDX-01 post is for separating of CO, CH
4and CO
2, be mainly used in trace detection, and by reburner transition detection CH
4gas, alkali asbestos post can be by CO
2absorption is with protection 5A molecular sieve.
Described installation for transformer comprises the first installation for transformer and the second installation for transformer, and the outlet side of the first installation for transformer and the second installation for transformer is all connected with ten-way valve by solenoid valve with inlet end, is also provided with vacuum pump between outlet side and ten-way valve.Vacuum pump is used for gas to be detected to extract out from the first installation for transformer or the second installation for transformer, the turnover of solenoid control gas.
On described hydrogen flame detector and auxiliary gas cylinder and combustion-supporting gas cylinder connecting line, be respectively equipped with clarifier, clarifier is dispelled moisture content and organic impurities in gas.
Described clarifier one side is connected with pressure maintaining valve, needle-valve and flowmeter in turn, and pressure maintaining valve is constant by gaseous tension, and flowmeter can be indicated gas flow.
One export pipeline of described ten-way valve is connected carrier gas bottle with after the pipeline parallel connection of thermal conductivity detector (TCD) place.
Compared with prior art, the present invention is based on the beneficial effect that in the power transformer conservator of gas chromatographic technique, analysing mixed device has is:
1, can tackle the online or various fault characteristic gases of Site Detection of large-scale power transformer: ten-way valve, reburner, hydrogen flame detector, 5A molecular sieve and TDX-01 post are set, can realize and detect CO, CH simultaneously
4and CO
2the object of three kinds of gases, the signal after detection changes electric signal into, then through the recording pointer chromatographic peak that runs a curve, is calculated the content of tested gas each component by chromatographic peak, realizes the online or various fault characteristic gases of Site Detection of large-scale power transformer;
2, measure highly sensitive, precision is high and good reliability: after tested, the testing process of whole system can complete with interior at 15 minutes, and microanalysis detectable concentration reaches 1PPM, macro-analysis concentration reaches 0.1%～0.2%, measure sensitivity higher, more accurate, improved reliability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: 1, the first installation for transformer 2, the second installation for transformer 3, carrier gas bottle 4, auxiliary gas cylinder 5, combustion-supporting gas cylinder 6, clarifier 7, pressure maintaining valve 8, needle-valve 9, flowmeter 10, thermal conductivity detector (TCD) 11, ten-way valve 12, alkali asbestos post 13, chromatogram column compartment 14,5A molecular sieve 15, TDX-01 post 16, reburner 17, hydrogen flame detector 18, vacuum pump 19, solenoid valve.
Fig. 1 is the most preferred embodiment that the present invention is based on analysing mixed device in the power transformer conservator of gas chromatographic technique, and below in conjunction with accompanying drawing 1, the present invention will be further described:
Embodiment
With reference to accompanying drawing 1: analysing mixed device in should the power transformer conservator based on gas chromatographic technique, comprises installation for transformer, vacuum pump 18, ten-way valve 11 and chromatogram column compartment 13.Installation for transformer comprises the first installation for transformer 1 and the second installation for transformer 2, the outlet side of the first installation for transformer 1 and the second installation for transformer 2 is equipped with solenoid valve 19 and is connected with ten-way valve 11 with inlet end simultaneously, between outlet side and ten-way valve 11, is provided with vacuum pump 18.Vacuum pump 18 is for extracting gas to be detected out from the first installation for transformer 1 or the second installation for transformer 2, solenoid valve 19 is controlled the turnover of gas.Ten-way valve 11 connects thermal conductivity detector (TCD) 10 and chromatogram column compartment 13 simultaneously, thermal conductivity detector (TCD) 10 connects carrier gas bottle 3, chromatogram column compartment 13 connects hydrogen flame detector 17 by reburner 16, and two openings of hydrogen flame detector 17 are connected to respectively auxiliary gas cylinder 4 and combustion-supporting gas cylinder 5.Reburner 16 is located in independent confined space, in temperature, is at 360 ℃, utilizes the catalytic action of nickel, by CO and C0
2be replaced as CH
4, like this, hydrogen flame detector 17 just can react with it, detects its concentration, reaches and detects CO, CH simultaneously
4and CO
2the object of three kinds of gases, the signal after detection changes electric signal into, then through the recording pointer chromatographic peak that runs a curve, is calculated the content of tested gas each component by chromatographic peak.
One export pipeline of ten-way valve 11 is connected carrier gas bottle 3 with after thermal conductivity detector (TCD) 10 place pipeline parallel connections.
In chromatogram column compartment 13, be provided with 5A molecular sieve 14 and TDX-01 post 15,5A molecular sieve 14 one end connect ten-way valve 11 by alkali asbestos post 12, the other end connects thermal conductivity detector (TCD) 10, thermal conductivity detector (TCD) 10 connects carrier gas bottle 3 by clarifier 6, TDX-01 post 15 one end connect ten-way valve 11, and the other end connects reburner 16.The principle of thermal conductivity detector (TCD) 10 is to have the thermal conductivity coefficient different with carrier gas according to different material, when the gas by thermal conductance and concentration thereof change, will take away the heat not waiting from thermal sensing element wherein, cause the variation of its resistance, by electric bridge, can measure the resistance of variation.5A molecular sieve 14 is for separating of O
2and N
2, gas detects its content by thermal conductivity detector (TCD) 10, and TDX-01 post 15 is for separating of CO, CH
4and CO
2, be mainly used in trace detection, and by reburner 16 transition detection CH
4gas, alkali asbestos post 12 can be by CO
2absorption is with protection 5A molecular sieve 14.
On hydrogen flame detector 17 and auxiliary gas cylinder 4 and combustion-supporting gas cylinder 5 connecting lines, be respectively equipped with clarifier 6, clarifier 6 is for dispelling moisture content and organic impurities in gas.
Clarifier 6 one sides are connected with pressure maintaining valve 7, needle-valve 8 and flowmeter 9 in turn, and pressure maintaining valve 7 is constant by gaseous tension, and flowmeter 9 can be indicated gas flow.
Principle of work and the course of work are as follows:
Be somebody's turn to do analysing mixed device in the power transformer conservator based on gas chromatographic technique and can be divided into detection O
2and N
2gas circuit and detect CO, CH
4and CO
2gas circuit.
Detect O
2and N
2gas circuit, the H in carrier gas bottle 3
2after clarifier 6, dispel moisture content and organic impurities and import chromatograph, first by pressure maintaining valve 7, nebulizer gas pressure is constant in chromatograph, flowmeter 9 can be indicated gas flow.
O
2and N
2testing process: under the effect of vacuum pump 18, the mixed gas of the first installation for transformer 1 or the second installation for transformer 2 enters the ten-way valve 11 in chromatograph under the control of solenoid valve 19, through alkali asbestos post 12 by CO
2absorption, after entering 5A molecular sieve 14, the detection through thermal conductivity detector (TCD) 10, changes detection signal into electric signal, then through the recording pointer chromatographic peak that runs a curve, is calculated the content of tested gas each component by chromatographic peak.
Detect CO, CH
4and CO
2gas circuit, hydrogen flame detector 17 is except carrier gas H
2also has assisted gas N outward,
2with help gas-air, N in auxiliary gas cylinder 4
2through clarifier 6, after pressure maintaining valve 7, enter hydrogen flame detector 17, in combustion-supporting gas cylinder 5, air, through clarifier 6, enters hydrogen flame detector 17 after pressure maintaining valve 7.
CO, CH
4and CO
2testing process: under the effect of vacuum pump 18, mixed gas in the first installation for transformer 1 or the second installation for transformer 2, under the control of solenoid valve 19, enter the ten-way valve 11 in chromatograph, by TDX-01 post 15, reburner 16, enters hydrogen flame detector 17, the electric signal of output after micro current amplifier to recording pointer, the recording pointer chromatographic peak that runs a curve, is calculated the content of tested gas each component by chromatographic peak.In power transformer conservator by this based on gas chromatographic technique, the microanalysis of analysing mixed device detects and can concentration reach 1PPM, and macro-analysis concentration reaches 0.1%～0.2%, and sensitivity is higher, more accurate.
The above, be only preferred embodiment of the present invention, is not the present invention to be done to the restriction of other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.
Claims (4)
1. analysing mixed device in the power transformer conservator based on gas chromatographic technique, comprise installation for transformer, vacuum pump (18), ten-way valve (11) and chromatogram column compartment (13), it is characterized in that: installation for transformer is connected with ten-way valve (11), ten-way valve (11) connects thermal conductivity detector (TCD) (10) and chromatogram column compartment (13) simultaneously, thermal conductivity detector (TCD) (10) connects carrier gas bottle (3), chromatogram column compartment (13) connects hydrogen flame detector (17) by reburner (16), two openings of hydrogen flame detector (17) are connected to respectively auxiliary gas cylinder (4) and combustion-supporting gas cylinder (5), in chromatogram column compartment (13), be provided with 5A molecular sieve (14) and TDX-01 post (15), 5A molecular sieve (14) one end connects ten-way valve (11) by alkali asbestos post (12), the other end connects thermal conductivity detector (TCD) (10), thermal conductivity detector (TCD) (10) connects carrier gas bottle (3) by clarifier (6), TDX-01 post (15) one end connects ten-way valve (11), and the other end connects reburner (16),
Described installation for transformer comprises the first installation for transformer (1) and the second installation for transformer (2), the outlet side of the first installation for transformer (1) and the second installation for transformer (2) is all connected with ten-way valve (11) by solenoid valve (19) with inlet end, is also provided with vacuum pump (18) between outlet side and ten-way valve (11).
2. analysing mixed device in the power transformer conservator based on gas chromatographic technique according to claim 1, is characterized in that: on described hydrogen flame detector (17) and auxiliary gas cylinder (4) and combustion-supporting gas cylinder (5) connecting line, be respectively equipped with clarifier (6).
3. analysing mixed device in the power transformer conservator based on gas chromatographic technique according to claim 1, is characterized in that: front pressure maintaining valve (7), needle-valve (8) and the flowmeter (9) of being provided with successively of described clarifier (6).
4. analysing mixed device in the power transformer conservator based on gas chromatographic technique according to claim 1, is characterized in that: an export pipeline of described ten-way valve (11) is connected carrier gas bottle (3) with after thermal conductivity detector (TCD) (10) place pipeline parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210030395.0A CN102590419B (en) | 2012-02-10 | 2012-02-10 | Device used for analyzing mixed gas in expansion tank of power transformer and based on gas chromatographic technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210030395.0A CN102590419B (en) | 2012-02-10 | 2012-02-10 | Device used for analyzing mixed gas in expansion tank of power transformer and based on gas chromatographic technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102590419A CN102590419A (en) | 2012-07-18 |
| CN102590419B true CN102590419B (en) | 2014-08-06 |
Family
ID=46479350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210030395.0A Expired - Fee Related CN102590419B (en) | 2012-02-10 | 2012-02-10 | Device used for analyzing mixed gas in expansion tank of power transformer and based on gas chromatographic technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102590419B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241985B (en) * | 2014-05-28 | 2017-07-18 | 国网山西省电力公司电力科学研究院 | The method for obtaining insulating oil gas-chromatography in transformer |
| CN106645498B (en) * | 2017-01-16 | 2022-07-05 | 国网福建省电力有限公司 | Automatic starting device and starting method of transformer oil gas chromatography detector |
| CN110806515A (en) * | 2019-10-11 | 2020-02-18 | 大唐水电科学技术研究院有限公司 | Transformer comprehensive state evaluation method |
| CN111239281A (en) * | 2020-02-12 | 2020-06-05 | 西南石油大学 | Improved gas chromatography carrier gas system |
| CN112285034A (en) * | 2020-11-02 | 2021-01-29 | 国网上海市电力公司 | Real-time warning method based on conservator sensor and computer equipment |
| CN112414611B (en) * | 2020-11-26 | 2022-07-08 | 沈阳欧施盾新材料科技有限公司 | Method and system for monitoring pressure of transformer gas cylinder based on chromatograph |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588051A (en) * | 2004-09-17 | 2005-03-02 | 中国地质大学（北京） | Portable gas hydrocarbon detector |
| CN1818638A (en) * | 2006-03-21 | 2006-08-16 | 上海华谊丙烯酸有限公司 | On-line chromatographic analytical system and use for gas-solid-phase oxidation reactant |
| CN2886567Y (en) * | 2005-09-07 | 2007-04-04 | 上海华爱色谱分析技术有限公司 | Gas chromatograph for complete gas analysis |
| CN101320025A (en) * | 2008-07-18 | 2008-12-10 | 上海市计算技术研究所 | Gas-chromatography detection method used for power transformer oil |
| CN101612581A (en) * | 2009-06-25 | 2009-12-30 | 天津大学 | Be used for mesopore-macropore integral catalyzer and preparation that hydrogen-rich gas CO purifies |
| CN101629936A (en) * | 2009-08-12 | 2010-01-20 | 上海华爱色谱分析技术有限公司 | Pulse helium ionized gas phase chromatographic instrument |
| CN101907612A (en) * | 2010-07-29 | 2010-12-08 | 蓝星化工有限责任公司 | Method for carrying out gas chromatography on minor components contained in finished hydrogen |
| CN102053129A (en) * | 2010-11-23 | 2011-05-11 | 西南化工研究设计院 | Analytical method for electronic grade CF4 |
| CN202471666U (en) * | 2012-02-10 | 2012-10-03 | 山东先河悦新机电股份有限公司 | Mixed gas analytical equipment in power transformer oil breather based on gas chromatographic technology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6112602A (en) * | 1993-06-14 | 2000-09-05 | New Jersey Institute Of Technology | Analytical apparatus and instrumentation for on-line measurement of volatile organic compounds in fluids |
-
2012
- 2012-02-10 CN CN201210030395.0A patent/CN102590419B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1588051A (en) * | 2004-09-17 | 2005-03-02 | 中国地质大学（北京） | Portable gas hydrocarbon detector |
| CN2886567Y (en) * | 2005-09-07 | 2007-04-04 | 上海华爱色谱分析技术有限公司 | Gas chromatograph for complete gas analysis |
| CN1818638A (en) * | 2006-03-21 | 2006-08-16 | 上海华谊丙烯酸有限公司 | On-line chromatographic analytical system and use for gas-solid-phase oxidation reactant |
| CN101320025A (en) * | 2008-07-18 | 2008-12-10 | 上海市计算技术研究所 | Gas-chromatography detection method used for power transformer oil |
| CN101612581A (en) * | 2009-06-25 | 2009-12-30 | 天津大学 | Be used for mesopore-macropore integral catalyzer and preparation that hydrogen-rich gas CO purifies |
| CN101629936A (en) * | 2009-08-12 | 2010-01-20 | 上海华爱色谱分析技术有限公司 | Pulse helium ionized gas phase chromatographic instrument |
| CN101907612A (en) * | 2010-07-29 | 2010-12-08 | 蓝星化工有限责任公司 | Method for carrying out gas chromatography on minor components contained in finished hydrogen |
| CN102053129A (en) * | 2010-11-23 | 2011-05-11 | 西南化工研究设计院 | Analytical method for electronic grade CF4 |
| CN202471666U (en) * | 2012-02-10 | 2012-10-03 | 山东先河悦新机电股份有限公司 | Mixed gas analytical equipment in power transformer oil breather based on gas chromatographic technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102590419A (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102590419B (en) | Device used for analyzing mixed gas in expansion tank of power transformer and based on gas chromatographic technology | |
| CN101923098B (en) | Continuous on-line analysis device of benzene, total hydrocarbons, methane and CO in carbon dioxide | |
| CN102128894B (en) | Online analytical chromatograph and chromatographic detection method for gases in insulating oil | |
| CN102937627B (en) | Online analysis method for gas components in natural gas hydrogen production process | |
| CN104849374A (en) | Non-methane hydrocarbon analysis equipment and method | |
| CN202471666U (en) | Mixed gas analytical equipment in power transformer oil breather based on gas chromatographic technology | |
| CN103063771B (en) | Process of one-sample introduction dual-detector gas chromatography and transformer oil analysis gas chromatography | |
| CN104076102A (en) | Analyzer for gas dissolved in mobile type insulating oil and detection method of gas dissolved in mobile type insulating oil | |
| CN209198394U (en) | VOCs on-line monitoring system | |
| CN204731209U (en) | NMHC analytical equipment | |
| CN202305489U (en) | Chromatographic instrument for detecting failure of SF6 electric equipment | |
| CN203365369U (en) | System used for monitoring hydrogen gases produced in fast reactor washing process | |
| CN101487821A (en) | Full-automatic dielectric oil chromatographic analysis system | |
| CN109752440A (en) | A kind of total hydrocarbon concentration detector and its application and total hydrocarbon concentration measuring method | |
| CN203465246U (en) | System for detecting performance of transformer oil chromatograph on-line monitoring device | |
| CN103472162B (en) | The method that methane in sewage gas and hydrogen detect simultaneously | |
| CN203405450U (en) | Detection device for quantitatively detecting sulfur-containing fault gas components in sulphur hexafluoride electrical equipment | |
| CN202421140U (en) | Gas chromatograph for detecting mine gas | |
| CN214895052U (en) | Real-time detection device for methane and non-methane total hydrocarbons | |
| CN204330692U (en) | Based on the on-line monitoring device of integrated photovoltaic substation transformer | |
| CN207675722U (en) | One kind being used for bushing oil and gas composite on-Line Monitor Device | |
| CN109283297B (en) | Independent calibration sampling system for hydrogen online analysis | |
| CN204807523U (en) | Thermal conductivity detector | |
| CN209230889U (en) | Platform with pipeline node leak detection | |
| CN106646154A (en) | Monitoring diagnostic device of power transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |