CN102590419A - 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
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- CN102590419A CN102590419A CN2012100303950A CN201210030395A CN102590419A CN 102590419 A CN102590419 A CN 102590419A CN 2012100303950 A CN2012100303950 A CN 2012100303950A CN 201210030395 A CN201210030395 A CN 201210030395A CN 102590419 A CN102590419 A CN 102590419A
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- gas
- transformer conservator
- way valve
- thermal conductivity
- power transformer
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Links
- 238000005516 engineering process Methods 0.000 title abstract description 5
- 239000007789 gas Substances 0.000 claims abstract description 78
- 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
- 238000004587 chromatography analysis Methods 0.000 claims description 15
- 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
- 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 15
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000007704 transition Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 230000008859 change Effects 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
- 230000003197 catalytic effect 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
- 238000000926 separation method Methods 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
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000004868 gas analysis 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
Images
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
Based on analysing mixed device in the power transformer conservator of gas chromatographic technique, belong to status of electric power detection technique field, this device is specifically designed to the mixed gas in the power transformer conservator is carried out stratographic analysis.
Background technology
Large-scale power transformer is one of most important in the power transmission and transformation system, the most expensive equipment, the quality of its insulation status, and can be related to electric system move safely and reliably.To the transformer dissolved gas analysis, i.e. big quantity research and the practice of DGA shows the H that dissolves in the transformer oil both at home and abroad
2, CH
4, C
2H
2, C
2H
4, C
2H
6, CO and CO
2Etc. 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 relatively sensitivelyer also find latent transformer defective and fault exactly; Generally believe that it is the powerful measure of the transformer insulated fault of diagnosis that DGA detects; The DGA pick-up unit is installed on one's body the operating transformer, and field real-time acquisition becomes a focus in this field with the gas that detects in the transformer conservator, and how to improve on-the-spot sensitivity and the precision that detects; Make it more reliable, become a urgent problem.
Summary of the invention
The technical matters that the present invention will solve is: the deficiency that overcomes prior art; Provide a kind of and can be used for the various fault signature gases of the online or on-the-spot detection of large-scale power transformer, highly sensitive, precision is high and good reliability based on analysing mixed device in the power transformer conservator of gas chromatographic technique.
The technical solution adopted for the present invention to solve the technical problems is: should be based on analysing mixed device in the power transformer conservator of gas chromatographic technique; Comprise transformer conservator, vacuum pump, ten-way valve and chromatogram column compartment; It is characterized in that: the transformer conservator 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, and the chromatogram column compartment connects hydrogen flame detector through reburner, and two openings of hydrogen flame detector are connected to auxiliary gas cylinder and combustion-supporting gas cylinder respectively.Reburner is located in the independent confined space, is under 360 ℃ in temperature, utilizes the catalytic action of nickel, with CO and CO
2Be replaced as CH
4, like this, hydrogen flame detector just can react with it, detects its concentration, reaches to detect CO, CH simultaneously
4And CO
2The purpose of three kinds of gases, the signal transition after the detection are electric signal, again through the recording pointer chromatographic peak that runs a curve, are calculated the content of tested gas each component by chromatographic peak.
Be provided with 5A molecular sieve and TDX-01 post in the described chromatogram column compartment; 5A molecular sieve one end connects ten-way valve through alkali asbestos post, and the other end connects thermal conductivity detector (TCD), and thermal conductivity detector (TCD) connects carrier gas bottle through clarifier; TDX-01 post one end connects ten-way valve, and the other end connects reburner.Thermal conductivity detector (TCD) is according to different material the thermal conductivity coefficient different with carrier gas to be arranged; When the gas through thermal conductance and concentration thereof change; Will take away the heat that does not wait from thermal sensing element wherein; Cause the variation of its resistance, then can measure the resistance of variation through electric bridge, the 5A molecular sieve is used to separate O
2And N
2, gas detects its content through thermal conductivity detector (TCD), and the TDX-01 post is used for separation of C O, CH
4And CO
2, be mainly used in trace detection, and through reburner transition detection CH
4Gas, alkali asbestos post can be with CO
2Absorption is with protection 5A molecular sieve.
Described transformer conservator comprises the first transformer conservator and the second transformer conservator, and the outlet side of the first transformer conservator and the second transformer conservator all is connected with ten-way valve through solenoid valve with inlet end, also is provided with vacuum pump between outlet side and the ten-way valve.Vacuum pump is used for extracting gas to be detected the turnover of solenoid control gas out from the first transformer conservator or the second transformer conservator.
Be respectively equipped with clarifier on described hydrogen flame detector and auxiliary gas cylinder and the combustion-supporting gas cylinder connecting line, clarifier is used for dispeling in the gas moisture content and organic impurities.
Described clarifier one side is connected with pressure maintaining valve, needle-valve and flowmeter in turn, and pressure maintaining valve is constant with gaseous tension, and flowmeter can be indicated gas flow.
Be connected carrier gas bottle after the pipeline parallel connection of one export pipeline of described ten-way valve and thermal conductivity detector (TCD) place.
Compared with prior art, the present invention is based on the beneficial effect that analysing mixed device had in the power transformer conservator of gas chromatographic technique is:
1, can tackle the various fault signature gases of the online or on-the-spot detection of large-scale power transformer: ten-way valve, reburner, hydrogen flame detector, 5A molecular sieve and TDX-01 post are set, can realize detecting simultaneously CO, CH
4And CO
2The purpose of three kinds of gases, the signal transition after the detection are electric signal, again through the recording pointer chromatographic peak that runs a curve, calculate the content of tested gas each component by chromatographic peak, realize the various fault signature gases of the online or on-the-spot detection of large-scale power transformer;
2, measure highly sensitive, precision is high and good reliability: through test, the testing process of whole system can 15 minutes with interior completion, the microanalysis detectable concentration reaches 1PPM; Macro-analysis concentration reaches 0.1%～0.2%; It is higher, more accurate to measure sensitivity, has improved reliability.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Wherein: 1, the first transformer conservator 2, the second transformer conservator 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 1 couple of the present invention further specifies below in conjunction with accompanying drawing:
Embodiment
With reference to accompanying drawing 1: should comprise transformer conservator, vacuum pump 18, ten-way valve 11 and chromatogram column compartment 13 based on analysing mixed device in the power transformer conservator of gas chromatographic technique.The transformer conservator comprises the first transformer conservator 1 and the second transformer conservator 2; The outlet side of the first transformer conservator 1 and the second transformer conservator 2 is equipped with solenoid valve 19 with inlet end and is connected with ten-way valve 11 simultaneously, is provided with vacuum pump 18 between outlet side and the ten-way valve 11.Vacuum pump 18 is used for extracting gas to be detected the turnover of solenoid valve 19 pilot-gas out from the first transformer conservator 1 or the second transformer conservator 2.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 through reburner 16, and two openings of hydrogen flame detector 17 are connected to auxiliary gas cylinder 4 and combustion-supporting gas cylinder 5 respectively.Reburner 16 is located in the independent confined space, is under 360 ℃ in temperature, utilizes the catalytic action of nickel, with CO and C0
2Be replaced as CH
4, like this, hydrogen flame detector 17 just can react with it, detects its concentration, reaches to detect CO, CH simultaneously
4And CO
2The purpose of three kinds of gases, the signal transition after the detection are electric signal, again through the recording pointer chromatographic peak that runs a curve, are calculated the content of tested gas each component by chromatographic peak.
Be connected carrier gas bottle 3 after the 10 place pipeline parallel connections of one export pipeline of ten-way valve 11 and thermal conductivity detector (TCD).
Be provided with 5A molecular sieve 14 and TDX-01 post 15 in the chromatogram column compartment 13; 5A molecular sieve 14 1 ends connect ten-way valve 11 through alkali asbestos post 12; The other end connects thermal conductivity detector (TCD) 10; Thermal conductivity detector (TCD) 10 connects carrier gas bottle 3 through clarifier 6, and TDX-01 post 15 1 ends 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 through thermal conductance and concentration thereof change; Will take away the heat that does not wait from thermal sensing element wherein, cause the variation of its resistance, then can measure the resistance of variation through electric bridge.5A molecular sieve 14 is used to separate O
2And N
2, gas detects its content through thermal conductivity detector (TCD) 10, and TDX-01 post 15 is used for separation of C O, CH
4And CO
2, be mainly used in trace detection, and through reburner 16 transition detection CH
4Gas, alkali asbestos post 12 can be with CO
2Absorption is with protection 5A molecular sieve 14.
Be respectively equipped with clarifier 6 on hydrogen flame detector 17 and auxiliary gas cylinder 4 and combustion-supporting gas cylinder 5 connecting lines, clarifier 6 is used for dispeling in the gas moisture content and organic impurities.
The principle of work and the course of work are following:
Should can be divided into based on analysing mixed device in the power transformer conservator of gas chromatographic technique and detect O
2And N
2Gas circuit with detect CO, CH
4And CO
2Gas circuit.
Detect O
2And N
2Gas circuit, the H in the carrier gas bottle 3
2Through behind the clarifier 6, dispel moisture content and organic impurities and import chromatograph, earlier by pressure maintaining valve 7 that 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 transformer conservator 1 or the second transformer conservator 2, the ten-way valve 11 under the control of solenoid valve 19 in the entering chromatograph, through alkali asbestos post 12 with CO
2Absorption gets into after the 5A molecular sieve 14, and the detection through thermal conductivity detector (TCD) 10 changes detection signal into electric signal, again 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 auxiliary gas N outward,
2With combustion-supporting gas air, N in the auxiliary gas cylinder 4
2Through clarifier 6, pressure maintaining valve 7 backs get into hydrogen flame detector 17, and combustion-supporting gas cylinder 5 air are through clarifier 6, and pressure maintaining valve 7 backs get into hydrogen flame detector 17.
CO, CH
4And CO
2Testing process: under the effect of vacuum pump 18, the mixed gas in the first transformer conservator 1 or the second transformer conservator 2, the ten-way valve 11 under the control of solenoid valve 19 in the entering chromatograph; Through TDX-01 post 15; Reburner 16 gets into hydrogen flame detector 17, the electric signal of output behind 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.But reach 1PPM through this microanalysis detection concentration based on analysing mixed device in the power transformer conservator of gas chromatographic technique, macro-analysis concentration reaches 0.1%～0.2%, and sensitivity is higher, and is more accurate.
The above only is preferred embodiment of the present invention, is not to be the restriction of the present invention being made other form, and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But everyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and remodeling that above embodiment did, still belong to the protection domain of technical scheme of the present invention according to technical spirit of the present invention.
Claims (6)
1. based on analysing mixed device in the power transformer conservator of gas chromatographic technique; Comprise transformer conservator, vacuum pump (18), ten-way valve (11) and chromatogram column compartment (13); It is characterized in that: the transformer conservator 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), and chromatogram column compartment (13) connects hydrogen flame detector (17) through reburner (16), and two openings of hydrogen flame detector (17) are connected to auxiliary gas cylinder (4) and combustion-supporting gas cylinder (5) respectively.
2. according to claim 1 based on analysing mixed device in the power transformer conservator of gas chromatographic technique; It is characterized in that: be provided with 5A molecular sieve (14) and TDX-01 post (15) in the described chromatogram column compartment (13); 5A molecular sieve (14) one ends connect ten-way valve (11) through alkali asbestos post (12); The other end connects thermal conductivity detector (TCD) (10); Thermal conductivity detector (TCD) (10) connects carrier gas bottle (3) through clarifier (6), and TDX-01 post (15) one ends connect ten-way valve (11), and the other end connects reburner (16).
3. according to claim 1 based on analysing mixed device in the power transformer conservator of gas chromatographic technique; It is characterized in that: described transformer conservator comprises the first transformer conservator (1) and the second transformer conservator (2); The outlet side of the first transformer conservator (1) and the second transformer conservator (2) all is connected with ten-way valve (11) through solenoid valve (19) with inlet end, also is provided with vacuum pump (18) between outlet side and the ten-way valve (11).
4. according to claim 1 based on analysing mixed device in the power transformer conservator of gas chromatographic technique, it is characterized in that: be respectively equipped with clarifier (6) on described hydrogen flame detector (17) and auxiliary gas cylinder (4) and combustion-supporting gas cylinder (5) connecting line.
5. according to claim 2 or 4 described, it is characterized in that: preceding pressure maintaining valve (7), needle-valve (8) and the flowmeter (9) of being provided with successively of described clarifier (6) based on analysing mixed device in the power transformer conservator of gas chromatographic technique.
6. arbitrary described based on analysing mixed device in the power transformer conservator of gas chromatographic technique according to claim 1-3, it is characterized in that: be connected carrier gas bottle (3) after the pipeline parallel connection of an export pipeline of described ten-way valve (11) and thermal conductivity detector (TCD) (10) place.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN102590419A true CN102590419A (en) | 2012-07-18 |
| CN102590419B CN102590419B (en) | 2014-08-06 |
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|---|---|---|---|
| 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 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241985A (en) * | 2014-05-28 | 2016-01-13 | 国网山西省电力公司电力科学研究院 | Method used for acquiring gas chromatogram of insulating oil in transformers |
| CN106645498A (en) * | 2017-01-16 | 2017-05-10 | 国网福建省电力有限公司 | Automatic starting device and method for gas chromatographic detector for transformer oil |
| 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 |
| CN112414611A (en) * | 2020-11-26 | 2021-02-26 | 邹莎 | Method and system for monitoring pressure of transformer gas cylinder based on chromatograph |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN112414611A (en) * | 2020-11-26 | 2021-02-26 | 邹莎 | Method and system for monitoring pressure of transformer gas cylinder based on chromatograph |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102590419B (en) | 2014-08-06 |
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