CN117054540A - Method for detecting dissolved gas in insulating oil of oil-filled electrical equipment - Google Patents
Method for detecting dissolved gas in insulating oil of oil-filled electrical equipment Download PDFInfo
- Publication number
- CN117054540A CN117054540A CN202310910961.5A CN202310910961A CN117054540A CN 117054540 A CN117054540 A CN 117054540A CN 202310910961 A CN202310910961 A CN 202310910961A CN 117054540 A CN117054540 A CN 117054540A
- Authority
- CN
- China
- Prior art keywords
- way valve
- oil
- fid
- inlet
- flame ion
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000007789 gas Substances 0.000 claims abstract description 37
- 239000001257 hydrogen Substances 0.000 claims abstract description 31
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 31
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 23
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 21
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 21
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 21
- 150000002500 ions Chemical class 0.000 claims description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 18
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 150000002431 hydrogen Chemical class 0.000 claims description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 7
- 239000001569 carbon dioxide Substances 0.000 claims description 7
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 4
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005977 Ethylene Substances 0.000 claims description 4
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 238000004458 analytical method Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000004445 quantitative analysis Methods 0.000 abstract description 4
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 238000004817 gas chromatography Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
- G01N30/66—Thermal conductivity detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/62—Detectors specially adapted therefor
- G01N30/64—Electrical detectors
- G01N30/68—Flame ionisation detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
- G01N30/20—Injection using a sampling valve
- G01N2030/201—Injection using a sampling valve multiport valves, i.e. having more than two ports
Abstract
The invention discloses a method for detecting dissolved gas in insulating oil of oil-filled electrical equipment, which realizes accurate quantitative analysis of the dissolved gas in the insulating oil of the oil-filled electrical equipment through a simple and practical gas path flow; the device comprises a sample inlet, a chromatographic column, a Thermal Conductivity Detector (TCD), a hydrogen Flame Ion Detector (FID) and a six-way valve, wherein the sample inlet is communicated with the inlet of the chromatographic column; the second outlet (5) of the six-way valve is communicated with the input port of the hydrogen flame ion detector; the quantitative detection of the dissolved gas in the oil can be completed, the operation is simple, and the analysis time is short.
Description
Technical Field
The invention relates to a device for detecting dissolved gas in insulating oil, which is mainly applied to quantitative analysis of the dissolved gas in oil of oil-filled electrical equipment and can also be applied to other general gas chromatographs.
Background
According to the national standard GB/T-17charge-2017 gas chromatography for determining the content of dissolved gas components in insulating oil, gas chromatography is required to be applied to hydrogen (H) 2 ) Oxygen (O) 2 ) Nitrogen (N) 2 ) Methane (CH) 4 ) Ethane (C) 2 H 6 ) Ethylene (C) 2 H 4 ) Acetylene (C) 2 H 2 ) Carbon monoxide (CO), carbon dioxide (CO) 2 ) Quantitatively analyzing the contents of nine characteristic gases; the following five gas path flows are recommended in this standard: the process is as follows: sampling once, and separating by a single column; a second flow: twice sample injection and double column separation; and a process III: primary sample injection, double-column parallel connection and secondary shunt control; the process is four: sampling at one time, and switching an automatic valve; the fifth flow is: automatic one-time sample injection in the headspace; the first flow is too simple and can not meet the separation analysis of nine gases; two sample injections are needed in the second flowThe actual operation is very inconvenient; the third flow path divides the sample, so that the detection limit of the detector is reduced; in the fourth process, the hydrocarbon component needs to pass through a reformer with a nickel catalyst, so that loss is easy to cause, and the analysis of trace gas components is greatly affected; the fifth flow belongs to the field of headspace direct sample injection; how to develop a simple and practical gas path flow, to minimize the loss of gas samples, and to realize accurate quantitative analysis of dissolved gas in insulating oil of oil-filled electrical equipment, becomes a problem to be solved on site.
Disclosure of Invention
The invention provides a method for detecting dissolved gas in insulating oil of oil-filled electrical equipment, which realizes accurate quantitative analysis of the dissolved gas in the insulating oil of the oil-filled electrical equipment through a simple and practical gas path flow.
The invention solves the technical problems through the following technical proposal;
the device for detecting dissolved gas in insulating oil of oil-filled electrical equipment comprises a sample inlet, a chromatographic column, a Thermal Conductivity Detector (TCD), a hydrogen Flame Ion Detector (FID) and a six-way valve, and is characterized in that the sample inlet is communicated with the inlet of the chromatographic column, the outlet of the chromatographic column is communicated with the inlet of the Thermal Conductivity Detector (TCD), the outlet of the Thermal Conductivity Detector (TCD) is connected with the inlet (6) of the six-way valve, the first outlet (1) of the six-way valve is connected with a nickel catalyst converter (Ni), and the outlet of the nickel catalyst converter (Ni) is communicated with the inlet of the hydrogen Flame Ion Detector (FID); the second outlet (5) of the six-way valve is in communication with the input of the hydrogen Flame Ion Detector (FID).
The hydrogen Flame Ion Detector (FID) is respectively connected with hydrogen (H) needed for detecting ignition 2 ) And Air (Air), hydrogen (H) 2 ) And Air (Air) is directly introduced into the hydrogen Flame Ion Detector (FID) through other Air paths.
The dissolved gas in the insulating oil to be analyzed enters the chromatographic column through the sample inlet, the gas of each component contained in the insulating oil is separated through one chromatographic column, and then the hydrogen is detected through a Thermal Conductivity Detector (TCD)（H 2 ) Oxygen (O) 2 ) And nitrogen (N) 2 ) Three gases; the first outlet (1) of the six-way valve is communicated with the inlet (6) of the six-way valve, and separated carbon monoxide (CO) and carbon dioxide (CO) 2 ) And methane (CH) 4 ) After passing through a nickel catalytic converter (Ni), detecting by a hydrogen Flame Ion Detector (FID); to treat carbon monoxide (CO), carbon dioxide (CO) 2 ) And methane (CH) 4 ) After all three gases pass through, the six-way valve is switched, the second outlet (5) of the six-way valve is communicated with the inlet (6) of the six-way valve, and the hydrogen Flame Ion Detector (FID) directly detects ethane (C 2 H 6 ) Ethylene (C) 2 H 4 ) And acetylene (C) 2 H 2 ）。
The invention can finish quantitative detection of dissolved gas in oil by only one sample injection, has simple operation and short analysis time, can reduce the loss of samples to the greatest extent, and has good sensitivity especially for sample analysis of trace hydrocarbon components.
Drawings
Fig. 1 is a schematic view of the air path structure of the present invention.
Description of the embodiments
The invention is described in detail below with reference to the attached drawing figures:
the device for detecting dissolved gas in insulating oil of oil-filled electrical equipment comprises a sample inlet, a chromatographic column, a Thermal Conductivity Detector (TCD), a hydrogen Flame Ion Detector (FID) and a six-way valve, and is characterized in that the sample inlet is communicated with the inlet of the chromatographic column, the outlet of the chromatographic column is communicated with the inlet of the Thermal Conductivity Detector (TCD), the outlet of the Thermal Conductivity Detector (TCD) is connected with the inlet (6) of the six-way valve, the first outlet (1) of the six-way valve is connected with a nickel catalyst converter (Ni), and the outlet of the nickel catalyst converter (Ni) is communicated with the inlet of the hydrogen Flame Ion Detector (FID); the second outlet (5) of the six-way valve is in communication with the input of the hydrogen Flame Ion Detector (FID).
The hydrogen Flame Ion Detector (FID) is respectively connected with the ignition detection deviceHydrogen (H) 2 ) And Air (Air), hydrogen (H) 2 ) And Air (Air) is directly introduced into the hydrogen Flame Ion Detector (FID) through other Air paths.
The dissolved gas in the insulating oil to be analyzed enters the chromatographic column through the sample inlet, the gas of each component contained in the insulating oil is separated by one chromatographic column, and then the hydrogen (H) is detected by a Thermal Conductivity Detector (TCD) 2 ) Oxygen (O) 2 ) And nitrogen (N) 2 ) Three gases; the first outlet (1) of the six-way valve is communicated with the inlet (6) of the six-way valve, and separated carbon monoxide (CO) and carbon dioxide (CO) 2 ) And methane (CH) 4 ) After passing through a nickel catalytic converter (Ni), detecting by a hydrogen Flame Ion Detector (FID); to treat carbon monoxide (CO), carbon dioxide (CO) 2 ) And methane (CH) 4 ) After all three gases pass through, the six-way valve is switched, the second outlet (5) of the six-way valve is communicated with the inlet (6) of the six-way valve, and the hydrogen Flame Ion Detector (FID) directly detects ethane (C 2 H 6 ) Ethylene (C) 2 H 4 ) And acetylene (C) 2 H 2 ）。
Claims (2)
1. The method for detecting dissolved gas in insulating oil of oil-filled electrical equipment comprises a sample inlet, a chromatographic column, a Thermal Conductivity Detector (TCD), a hydrogen Flame Ion Detector (FID) and a six-way valve, wherein the sample inlet is communicated with the inlet of the chromatographic column; the second outlet (5) of the six-way valve is communicated with the input port of the hydrogen Flame Ion Detector (FID); the method is characterized by comprising the following steps of:
the dissolved gas in the insulating oil to be analyzed enters the chromatographic column through the sample inlet, the gas of each component is separated by one chromatographic column, and then the gas is thermally conductedThe detector (TCD) detects hydrogen (H 2 ) Oxygen (O) 2 ) And nitrogen (N) 2 ) Three gases; the first outlet (1) of the six-way valve is communicated with the inlet (6) of the six-way valve, and separated carbon monoxide (CO) and carbon dioxide (CO) 2 ) And methane (CH) 4 ) After passing through a nickel catalytic converter (Ni), detecting by a hydrogen Flame Ion Detector (FID); to treat carbon monoxide (CO), carbon dioxide (CO) 2 ) And methane (CH) 4 ) After all three gases pass through, the six-way valve is switched, the second outlet (5) of the six-way valve is communicated with the inlet (6) of the six-way valve, and the hydrogen Flame Ion Detector (FID) directly detects ethane (C 2 H 6 ) Ethylene (C) 2 H 4 ) And acetylene (C) 2 H 2 ）。
2. The method for detecting dissolved gas in insulating oil of an oil-filled electrical apparatus according to claim 1, wherein hydrogen (H) required for detecting ignition is respectively connected to hydrogen Flame Ion Detectors (FID) 2 ) And Air (Air), hydrogen (H) 2 ) And Air (Air) is directly introduced into the hydrogen Flame Ion Detector (FID) through other Air paths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310910961.5A CN117054540A (en) | 2023-07-24 | 2023-07-24 | Method for detecting dissolved gas in insulating oil of oil-filled electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310910961.5A CN117054540A (en) | 2023-07-24 | 2023-07-24 | Method for detecting dissolved gas in insulating oil of oil-filled electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117054540A true CN117054540A (en) | 2023-11-14 |
Family
ID=88661604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310910961.5A Pending CN117054540A (en) | 2023-07-24 | 2023-07-24 | Method for detecting dissolved gas in insulating oil of oil-filled electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117054540A (en) |
-
2023
- 2023-07-24 CN CN202310910961.5A patent/CN117054540A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111380988B (en) | Gas chromatograph for measuring impurity content in hydrogen and detection method | |
| CN201440135U (en) | Multifunctional gas chromatograph gas path flow | |
| CN202383115U (en) | Multifunctional gas chromatography detection system for gas analysis | |
| CN101923098A (en) | Continuous on-line analysis device of benzene, total hydrocarbons, methane and CO in carbon dioxide | |
| CN101887051B (en) | Online chromatographic analysis method | |
| CN104076102B (en) | Mobile insulation dissolved gas analysis instrument and detection method thereof | |
| CN111948327A (en) | Analysis method for trace oxygen, argon, nitrogen, carbon monoxide, methane and carbon dioxide in industrial hydrogen | |
| CN201765237U (en) | Continuous online analysis device for analyzing benzene, total hydrocarbons, methane and carbon monoxide in carbon dioxide | |
| CN101893610A (en) | Method for analyzing mixed light hydrocarbons by conjunctive use of ten-way valve and six-way valve | |
| CN201803991U (en) | Gas channel switching system for natural gas component analysis | |
| CN114935610A (en) | Method and system for simultaneously measuring contents of sulfur-containing and alcohol-containing components in acid gas by gas chromatography | |
| CN212514443U (en) | Gas chromatography detection system for analyzing hydrocarbon impurities and trace gas in propylene | |
| CN105572281A (en) | Gas chromatography analytical device and gas chromatography analytical method for high-purity oxygen | |
| CN117054540A (en) | Method for detecting dissolved gas in insulating oil of oil-filled electrical equipment | |
| CN117007709A (en) | Device for detecting dissolved gas in insulating oil of oil-filled electrical equipment | |
| CN102650624B (en) | Analysis method for hydrocarbon gas mixture with oxygen compounds | |
| CN109115919B (en) | Gas chromatography analysis device and analysis method for trace hydrogen, oxygen and nitrogen in gas | |
| CN2616907Y (en) | Gaseous phase chromatograph with three detectors | |
| CN201177622Y (en) | Gas-chromatography analyzer | |
| CN116068107A (en) | Device and method for separating components of dissolved gas in high-precision transformer oil | |
| CN101251517B (en) | Method and equipment for chromatographic analysis minim argon, nitrogen impurity in oxygen | |
| CN103472162B (en) | The method that methane in sewage gas and hydrogen detect simultaneously | |
| CN113740469A (en) | Analysis method and analysis system for hydrogen component content of fuel | |
| CN210442329U (en) | Special gas chromatograph for coal mine disaster gas analysis | |
| CN104458936B (en) | For single injection port gas chromatograph that insulating oil is analyzed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |