CN114878496A - Annular optical fiber SF based on ultraviolet absorption spectrum 6 Decomposition product detection device and method - Google Patents
Annular optical fiber SF based on ultraviolet absorption spectrum 6 Decomposition product detection device and method Download PDFInfo
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- CN114878496A CN114878496A CN202210413984.0A CN202210413984A CN114878496A CN 114878496 A CN114878496 A CN 114878496A CN 202210413984 A CN202210413984 A CN 202210413984A CN 114878496 A CN114878496 A CN 114878496A
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 111
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title abstract description 13
- 238000000862 absorption spectrum Methods 0.000 title abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 27
- 230000003595 spectral effect Effects 0.000 claims abstract description 18
- 238000002211 ultraviolet spectrum Methods 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 72
- 238000005259 measurement Methods 0.000 claims description 12
- 229910018503 SF6 Inorganic materials 0.000 claims description 8
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 claims description 8
- 229960000909 sulfur hexafluoride Drugs 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 239000012510 hollow fiber Substances 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000004927 fusion Effects 0.000 claims description 2
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000001228 spectrum Methods 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 7
- 238000005070 sampling Methods 0.000 description 7
- 238000004817 gas chromatography Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004587 chromatography analysis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]
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- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The application relates to an annular optical fiber SF based on ultraviolet absorption spectrum 6 Decomposition product detection device and method, SF 6 The ultraviolet spectrum detection device for the decomposed gas product comprises an ultraviolet light source, an optical fiber filtering system, an optical fiber collimating system, a hollow optical fiber, an optical fiber focusing system, an ultraviolet spectrometer and a computer; the ultraviolet light source is positioned at one side of the optical fiber filtering system and used for emitting ultraviolet light; the optical fiber filtering system is used for filtering the selected lines of the ultraviolet light and then transmitting the ultraviolet light to the light inlet of the optical fiber collimating system; the optical fiber collimation system is used for collimating the filtered ultraviolet light into parallel light; the optical fiber focusing system is used for focusing the ultraviolet light fused with the gas to be detected; the ultraviolet fiber spectrometer receives the focused light to generate spectral data; the computer is used for receiving the spectral data and calculating the content of the gas to be measured; the hollow optical fiber is used for reflecting the collimated parallel light for multiple times and fully fusing the collimated parallel light with the gas to be detected. The invention uses the hollow optical fiber to replace the traditional gas pool, thereby greatly simplifying the traditional ultraviolet spectrum detection systemThe structure has higher sensitivity, high precision, miniaturization and light weight.
Description
Technical Field
The invention belongs to the field of gas detection, and particularly relates to an annular optical fiber SF based on ultraviolet absorption spectrum 6 Decomposition product detection device and method.
Background
SF 6 (sulfur hexafluoride) is commonly used as a gas insulation medium inside gas-insulated switchgear because of its excellent insulation and arc extinguishing properties. SF when partial discharge or partial overheat fault occurs inside the device 6 The gas may decompose to produce other products, which are more complex when solid insulation is involved. Thus: at SF 6 On-line monitoring of gas insulated equipmentIn the work of detection and fault diagnosis, the detection of characteristic decomposition components and other gases possibly generated has great significance and good engineering application value.
The method for detecting the dissolved gas in the oil mainly comprises oil chromatography, gas chromatography, spectral detection and the like. SF 6 The method for detecting the decomposition components mainly comprises an electrochemical sensing method, a gas chromatography method, a spectral detection method and the like. In the method, the oil chromatography and the gas chromatography need to obtain more accurate results in a laboratory with relatively good environmental conditions, the manual maintenance cost is high, and the measurement accuracy deviation is large after the chromatogram is polluted; the electrochemical sensing method has the problems of large cross interference, easy poisoning of the sensor and the like.
Prior art document 1(CN 114002177a) discloses an SF6 decomposition product detection system based on ultraviolet spectroscopy, comprising: the first ultraviolet light source generates first ultraviolet light, the first ultraviolet light enters the first gas absorption cell after passing through the first optical fiber collimation module, the first ultraviolet light is emitted after being reflected for multiple times in the first gas absorption cell, and the first ultraviolet light is transmitted to the ultraviolet spectrometer after being focused by the first optical fiber focusing module to obtain a spectrum corresponding to the gas to be measured; the second ultraviolet light source generates second ultraviolet light, the second ultraviolet light enters the second gas absorption cell after passing through the second optical fiber collimation module, the second ultraviolet light is emitted after being reflected for multiple times in the second gas absorption cell, the second ultraviolet light is transmitted to the ultraviolet spectrometer after being focused by the second optical fiber focusing module, and a spectrum corresponding to the contrast gas is obtained; and the processing module analyzes the spectral data to obtain a concentration detection result of the SF6 decomposition product. However, most detection systems based on ultraviolet spectroscopy adopt a gas absorption cell as a mixed absorption site of sampling gas and ultraviolet incident light, and the traditional gas cell has large volume, is not easy to integrate and has low flexibility.
Disclosure of Invention
To overcome the disadvantages of the prior art, the invention aims to utilize SF 6 The decomposition product gas has good optical absorption characteristic in ultraviolet optical band and good length adjustability of hollow optical fiber, and further provides an annular optical fiber SF based on ultraviolet absorption spectrum 6 Decomposition product detection device and method.
The invention adopts the following technical scheme.
1. SF (sulfur hexafluoride) 6 The ultraviolet spectrum detection device for the decomposed gas product comprises an ultraviolet light source, an optical fiber filtering system, an optical fiber collimating system, an optical fiber focusing system, an ultraviolet spectrometer and a computer; the ultraviolet light source is positioned at one side of the optical fiber filtering system and used for emitting ultraviolet light; the optical fiber filtering system is used for filtering the selected lines of the ultraviolet light and then transmitting the ultraviolet light to the light inlet of the optical fiber collimating system; the optical fiber collimation system is used for collimating the filtered ultraviolet light into parallel light; optical fiber focusing system for coupling SF 6 Ultraviolet light after the fusion of the decomposed gas is focused; the ultraviolet fiber spectrometer receives the focused light to generate spectral data; the computer is used for receiving the spectral data and calculating SF 6 The content of decomposition gases; the detection device also comprises a hollow optical fiber for reflecting the collimated parallel light for multiple times and enabling the collimated parallel light to be combined with SF 6 The decomposition gases fuse.
Furthermore, the detection device also comprises an optical fiber jumper wire which is used as a transmission medium of ultraviolet light;
the ultraviolet light source is connected with the optical fiber filtering system through an optical fiber jumper;
the hollow optical fiber is introduced into the gas to be measured and the parallel light through the optical fiber jumper.
Furthermore, the hollow optical fiber adopts a circular multi-layer winding stacking mode.
Further, the length of the hollow optical fiber is adjustable.
Furthermore, the optical fiber filtering system is an ultraviolet filter matched with the model of the gas to be detected.
Further, the optical fiber collimation system is an SMA905+ collimating mirror.
Further, the optical fiber focusing system is an SMA905+ focusing mirror lens.
8. SF (sulfur hexafluoride) 6 The ultraviolet spectrum detection method for the decomposition gas product comprises the following steps:
and 2, focusing parallel ultraviolet light at the outlet of the hollow optical fiber.
and 4, calculating the concentration of the gas to be measured according to the spectral data.
Further, the step 1 further includes:
and adjusting the length of the hollow optical fiber according to the measurement precision.
Further, the step 1 further includes:
a round multi-layer winding stacking hollow optical fiber is adopted.
Compared with the prior art, the invention has the advantages that:
(1) the invention uses the hollow optical fiber to replace the traditional gas pool, greatly simplifies the structure of the traditional ultraviolet spectrum detection system, and ensures that the gas measurement system has the characteristics of higher sensitivity, high precision, miniaturization and light weight.
(2) The device has the advantages of high integration and portability, convenience for detection under different environments, no influence of environmental factors such as temperature, humidity and electromagnetic interference, high detection speed and high sensitivity.
(3) Compared with the related technology, the invention is convenient to control, can realize the measurement simultaneity and ensure the accuracy, has low economic cost and has great development potential.
(4) Compared with the prior art, the hollow optical fiber ring has higher adjustability and portability, can adopt a circular multi-turn mode on binding, has compact and small integral structure and is suitable for portable use.
(5) The invention adopts the ultraviolet absorption spectrum technology and adds the filter plate, thereby improving the data signal of the spectrometer, improving the signal-to-noise ratio of the whole spectrum, reducing the uncertainty of the measurement result, having small measurement error and more accurate measurement result.
Drawings
FIG. 1 is a view of a ring-shaped optical fiber SF based on ultraviolet absorption spectrum 6 Decomposition product detection device.
In the figure: 1. an ultraviolet light source; 2. an optical fiber jumper; 3. an optical fiber filtering system; 4. a fiber alignment system; 5. a sampling airflow access port; 6. an optical fiber jumper; 7. a hollow fiber; 8. a sampling gas flow outlet; 9. a fiber optic focusing system; 10. an ultraviolet fiber spectrometer; 11. and (4) a computer.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
As shown in FIG. 1, the present invention discloses an SF 6 The ultraviolet spectrum detection device for the decomposed gas product comprises an ultraviolet light source, an optical fiber filtering system, an optical fiber collimating system, a hollow optical fiber, an optical fiber focusing system, an ultraviolet spectrometer and a computer.
The ultraviolet light source is positioned at one side of the optical fiber filtering system and used for emitting ultraviolet light. The ultraviolet light source is connected with the optical fiber filtering system through an optical fiber jumper wire, and the optical fiber jumper wire is used as a transmission medium of ultraviolet light.
The optical fiber filtering system is used for filtering the selected lines of the ultraviolet light and then enabling the ultraviolet light to enter the light inlet of the optical fiber collimating system. Further, the optical fiber filtering system can be an ultraviolet filter, the ultraviolet filter can be selected according to actually measured gas, and different gases correspond to ultraviolet filters of different models.
The optical fiber collimation system is used for collimating the light from the optical fiber filtering system into parallel light and connecting the parallel light and the sampling gas into the hollow optical fiber through the optical fiber connector. The fiber alignment system may be a first lens, and further, the first lens may be a type of SMA905+ collimating mirror.
The hollow optical fiber is introduced into the gas to be detected and the parallel light through the optical fiber jumper, so that the parallel light is radiated in the hollow optical fiber filled with the gas to be detected. The parallel light is reflected for many times in the hollow optical fiber and is reflected out from the other end of the hollow optical fiber after being absorbed by the gas to be measured. Wherein the gas to be detected is introduced from the sampling gas inlet, and the gas to be detected flows out from the sampling gas outlet, and can be SF 6 Component gases of the decomposition products, for example: SO (SO) 2 、CO 2 And the like. The hollow optical fiber replaces the traditional gas pool, and can more fully fuse parallel light and gas to be detected, so that the detection precision and accuracy are improved. Furthermore, the hollow optical fiber can be a hollow ring-shaped optical fiber, namely, the hollow optical fiber wire can adopt a circular multi-layer winding and stacking mode. Compared with the volume and the integration level of the traditional gas pool, the annular hollow optical fiber can be wound and stacked, and the operation degree is higher. Further, the length of the hollow core fiber is adjustable. The hollow optical fiber can adjust the length of the optical fiber according to the actual measurement precision requirement, so that the measurement precision is changed.
And the optical fiber focusing system is positioned at the outlet side of the hollow optical fiber and is used for focusing the light reflected by the hollow optical fiber. The fiber focus system may be a secondary lens, which may be a model SMA905+ focusing mirror lens.
The ultraviolet optical fiber spectrometer is positioned at the rear side of the optical fiber focusing system and used for receiving the light focused to the optical fiber by the optical fiber focusing system and generating spectral data.
And the computer is used for receiving the spectrum data, calculating, processing and recording the data, and comparing and analyzing the absorption spectrum and a pre-stored standard spectrum of the gas ultraviolet light absorption spectrum according to the input wavelength and power value of the ultraviolet light to finally obtain and display the components and the content of the gas to be detected.
Annular optical fiber SF based on ultraviolet absorption spectrum 6 The method for detecting the decomposition product comprises the following steps:
and 2, focusing parallel ultraviolet light at the outlet of the hollow optical fiber.
and 4, calculating the concentration of the gas to be measured according to the spectral data.
Further, step 1 further comprises adjusting the length of the hollow fiber according to the measurement accuracy.
Further, step 1 also includes that the hollow optical fiber wire is stacked in a circular multi-layer winding mode.
Further, step 4 specifically includes:
step 41, obtaining a background spectrum and a light source original spectrum of the measurement system;
step 42, acquiring an ultraviolet spectrum of the gas to be detected after the gas is subjected to standard gas;
step 43, calculating the absorbance of the gas to be measured according to the Lambert-Bell law;
step 44, separating the fast-changing spectrum from the slow-changing spectrum, and performing fast-changing spectrum Fourier transform;
step 45, carrying out function fitting on the concentration value of the gas to be detected by the extreme point;
and step 46, calculating the concentration of the gas to be measured by fitting function inversion.
The invention is based on the principle of ultraviolet absorption spectrum and is used for SF 6 Decomposing component gases such as SO 2 And CO 2 And (3) a gas detection device. The light and the sampling airflow are processed by using a lens and a hollow optical fiber with adjustable length. Designed a method for detecting at SF 6 Detecting the decomposition product SO of the gas under the background gas 2 And CO 2 A device for mixing gas.
The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (10)
1. SF (sulfur hexafluoride) 6 The ultraviolet spectrum detection device for the decomposed gas product comprises an ultraviolet light source, an optical fiber filtering system, an optical fiber collimating system, an optical fiber focusing system, an ultraviolet spectrometer and a computer; the ultraviolet light source is positioned at one side of the optical fiber filtering system and used for emitting ultraviolet light; optical fiber filtering system for ultraviolet light sortingAfter line filtering, the light enters the light inlet of the optical fiber collimation system; the optical fiber collimation system is used for collimating the filtered ultraviolet light into parallel light; optical fiber focusing system for coupling SF 6 Ultraviolet light after the fusion of the decomposed gas is focused; the ultraviolet fiber spectrometer receives the focused light to generate spectral data; the computer is used for receiving the spectral data and calculating SF 6 The content of decomposition gases; the detection device is characterized by further comprising a hollow optical fiber for reflecting the collimated parallel light for multiple times and enabling the collimated parallel light to be matched with SF (sulfur hexafluoride) 6 The decomposition gases fuse.
2. SF according to claim 1 6 The ultraviolet spectrum detection device for the decomposed gas products is characterized by further comprising an optical fiber jumper wire serving as a transmission medium of ultraviolet light;
the ultraviolet light source is connected with the optical fiber filtering system through an optical fiber jumper;
the hollow optical fiber is introduced into the gas to be measured and the parallel light through the optical fiber jumper.
3. SF according to claim 1 6 The ultraviolet spectrum detection device for the decomposed gas products is characterized in that the hollow optical fiber adopts a circular multi-layer winding stacking mode.
4. SF according to claim 1 6 The ultraviolet spectrum detection device for the decomposed gas products is characterized in that the length of the hollow optical fiber is adjustable.
5. SF according to claim 1 6 The ultraviolet spectrum detection device for the decomposed gas product is characterized in that the optical fiber filtering system is an ultraviolet filter matched with the model of the gas to be detected.
6. SF according to claim 1 6 The ultraviolet spectrum detection device for the decomposed gas products is characterized in that the optical fiber collimating system is an SMA905+ collimating mirror.
7. SF according to claim 1 6 The ultraviolet spectrum detection device for the decomposed gas product is characterized in that the optical fiber focusing system is an SMA905+ focusing mirror lens.
8. SF (sulfur hexafluoride) 6 Ultraviolet spectral detection method of a product of decomposition of a gas, for implementation on a spectral detection device according to claims 1-7, characterized in that it comprises the following steps:
step 1, filtering and collimating the parallel ultraviolet light and SF 6 The decomposition product is connected into a hollow fiber for multiple reflections of parallel ultraviolet light to sufficiently absorb SF 6 Decomposition products;
and 2, focusing parallel ultraviolet light at the outlet of the hollow optical fiber.
Step 3, receiving the focused parallel ultraviolet light to generate spectral data;
and 4, calculating the concentration of the gas to be measured according to the spectral data.
9. An SF according to claim 8 6 The ultraviolet spectrum detection method for the decomposed gas product is characterized in that the step 1 further comprises the following steps:
and adjusting the length of the hollow optical fiber according to the measurement precision.
10. An SF according to claim 8 6 The ultraviolet spectrum detection method for the decomposed gas product is characterized in that the step 1 further comprises the following steps:
a round multi-layer winding stacking hollow optical fiber is adopted.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210413984.0A CN114878496A (en) | 2022-04-16 | 2022-04-16 | Annular optical fiber SF based on ultraviolet absorption spectrum 6 Decomposition product detection device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210413984.0A CN114878496A (en) | 2022-04-16 | 2022-04-16 | Annular optical fiber SF based on ultraviolet absorption spectrum 6 Decomposition product detection device and method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011075513A (en) * | 2009-10-01 | 2011-04-14 | Yuji Matsuura | Gas spectroscopic analysis device |
| WO2012121651A1 (en) * | 2011-03-05 | 2012-09-13 | Chromalytica Ab | Make up and protective gas for light path window materials and increased spatial resolution in gas chromatography - uv detection |
| CN108051384A (en) * | 2017-12-07 | 2018-05-18 | 中国科学院合肥物质科学研究院 | A kind of portable difference absorption spectrum gas measurement system based on hollow optic fibre |
| CN109765468A (en) * | 2019-02-02 | 2019-05-17 | 重庆大学 | A kind of inside GIS SF based on fiber annular resonant cavity6Decomposition components in situ detection device |
| CN111413321A (en) * | 2020-04-30 | 2020-07-14 | 华中科技大学 | Optical fiber Raman spectrum gas analysis device |
| CN111751323A (en) * | 2020-07-22 | 2020-10-09 | 云南电网有限责任公司电力科学研究院 | A dispersion spectrum device for gaseous detection of SF6 |
| CN112098354A (en) * | 2020-09-21 | 2020-12-18 | 国网重庆市电力公司电力科学研究院 | Ultraviolet absorption spectroscopy-based SF6 decomposition component detection device and method |
| CN112710628A (en) * | 2020-12-15 | 2021-04-27 | 国网电力科学研究院有限公司 | Ultra-sensitive SF (sulfur hexafluoride) based on broadband double-optical-comb spectrum6Gas decomposition component detection method |
| CN114002177A (en) * | 2021-12-06 | 2022-02-01 | 国网江苏省电力有限公司检修分公司 | SF6 decomposition product detection system based on ultraviolet spectroscopy |
-
2022
- 2022-04-16 CN CN202210413984.0A patent/CN114878496A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011075513A (en) * | 2009-10-01 | 2011-04-14 | Yuji Matsuura | Gas spectroscopic analysis device |
| WO2012121651A1 (en) * | 2011-03-05 | 2012-09-13 | Chromalytica Ab | Make up and protective gas for light path window materials and increased spatial resolution in gas chromatography - uv detection |
| CN108051384A (en) * | 2017-12-07 | 2018-05-18 | 中国科学院合肥物质科学研究院 | A kind of portable difference absorption spectrum gas measurement system based on hollow optic fibre |
| CN109765468A (en) * | 2019-02-02 | 2019-05-17 | 重庆大学 | A kind of inside GIS SF based on fiber annular resonant cavity6Decomposition components in situ detection device |
| CN111413321A (en) * | 2020-04-30 | 2020-07-14 | 华中科技大学 | Optical fiber Raman spectrum gas analysis device |
| CN111751323A (en) * | 2020-07-22 | 2020-10-09 | 云南电网有限责任公司电力科学研究院 | A dispersion spectrum device for gaseous detection of SF6 |
| CN112098354A (en) * | 2020-09-21 | 2020-12-18 | 国网重庆市电力公司电力科学研究院 | Ultraviolet absorption spectroscopy-based SF6 decomposition component detection device and method |
| CN112710628A (en) * | 2020-12-15 | 2021-04-27 | 国网电力科学研究院有限公司 | Ultra-sensitive SF (sulfur hexafluoride) based on broadband double-optical-comb spectrum6Gas decomposition component detection method |
| CN114002177A (en) * | 2021-12-06 | 2022-02-01 | 国网江苏省电力有限公司检修分公司 | SF6 decomposition product detection system based on ultraviolet spectroscopy |
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