CN108287147A - A kind of device and detection method of detection sulfur hexafluoride gas decomposition product - Google Patents
A kind of device and detection method of detection sulfur hexafluoride gas decomposition product Download PDFInfo
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- CN108287147A CN108287147A CN201810391286.9A CN201810391286A CN108287147A CN 108287147 A CN108287147 A CN 108287147A CN 201810391286 A CN201810391286 A CN 201810391286A CN 108287147 A CN108287147 A CN 108287147A
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- 238000001514 detection method Methods 0.000 title claims abstract description 35
- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 25
- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 23
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 20
- 238000010521 absorption reaction Methods 0.000 claims abstract description 17
- 229910052724 xenon Inorganic materials 0.000 claims abstract description 13
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910002091 carbon monoxide Inorganic materials 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 31
- 239000013307 optical fiber Substances 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000001228 spectrum Methods 0.000 claims description 6
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 238000002211 ultraviolet spectrum Methods 0.000 claims description 2
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 238000012545 processing Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000001186 cumulative effect Effects 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- 238000002835 absorbance Methods 0.000 description 2
- 239000012491 analyte Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- -1 SM905 connectors Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229960004424 carbon dioxide Drugs 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000411 transmission spectrum Methods 0.000 description 1
Classifications
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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
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
-
- 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
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
- G01N2021/396—Type of laser source
- G01N2021/399—Diode laser
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Optics & Photonics (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 invention discloses a kind of devices and detection method of detection sulfur hexafluoride gas decomposition product, it includes infrared light generator, and the infrared light that infrared light generator is sent out is divided into two beam infrared lights after beam splitter and is sent respectively to infrared multiple reflecting pool and locking wire absorption cell；Infrared multiple reflecting pool and locking wire absorption cell are respectively equipped with the first photoelectric switching circuit and the second photoelectric switching circuit, first photoelectric switching circuit and the second photoelectric switching circuit are connect with the input terminal of the first lock-in amplifier and the second lock-in amplifier respectively, and the output end of the first lock-in amplifier and the second lock-in amplifier is connect with signal pickup assembly respectively；The ultraviolet light of xenon lamp output is sent to ultraviolet multiple reflecting pool, and ultraviolet multiple reflecting pool is equipped with ultraviolet spectrometer, and the output end of ultraviolet spectrometer is connect with signal pickup assembly, and signal pickup assembly is connect with host computer；It is big to error existing for sulfur hexafluoride gas decomposition product Carbon Monoxide Detection to solve the prior art, the technical problems such as accuracy is low.
Description
Technical field
The invention belongs to sulfur hexafluoride gas decomposition product detection techniques more particularly to a kind of detection sulfur hexafluoride gas to decompose
The device and detection method of object.
Background technology
Analyte detection, which is decomposed, for substation's sulfur hexafluoride gas generally uses the SF based on electrochemical sensor method6Decomposition product
There is the problems such as error is big, and accuracy is low in this manner in detector；In order to solve these problems, the newest prior art
Detection for carbon monoxide in sulfur hexafluoride gas decomposition product is mainly detected by infrared absorption spectroscopy, using
The mode for measuring absorbance, in this manner due to SF6Contain a large amount of foreign gas, these foreign gases in decomposition product
The accuracy and accuracy for measuring carbon monoxide can be seriously affected；The technical problems such as cause measuring result error big.
Invention content
The technical problem to be solved by the present invention is to：There is provided it is a kind of detection sulfur hexafluoride gas decomposition product device and detection side
Method, the technologies such as accuracy low big to error existing for sulfur hexafluoride gas decomposition product Carbon Monoxide Detection to solve the prior art
Problem.
The technical scheme is that：
A kind of device of detection sulfur hexafluoride gas decomposition product, it includes infrared light generator, and infrared light generator is sent out
Infrared light be divided into two beam infrared lights after beam splitter and sent respectively to infrared multiple reflecting pool and locking wire absorption cell；It is infrared multiple
Reflection tank and locking wire absorption cell are respectively equipped with the first photoelectric switching circuit and the second photoelectric switching circuit, the first photoelectric switching circuit
It is connect respectively with the input terminal of the first lock-in amplifier and the second lock-in amplifier with the second photoelectric switching circuit, the first locking phase is put
The output end of big device and the second lock-in amplifier is connect with signal pickup assembly respectively；The ultraviolet light of xenon lamp output is sent to ultraviolet more
Secondary reflection pond, ultraviolet multiple reflecting pool are connect by optical fiber with ultraviolet spectrometer, the output end and signal acquisition of ultraviolet spectrometer
Device connects, and signal pickup assembly is connect with host computer.
Xenon lamp is connect with xenon lamp controller.
The infrared light generator be semiconductor laser with tunable, it include DFB laser diodes, temperature controller,
Current controller and laser scanning circuit；Temperature controller, current controller and laser scanning circuit respectively with two pole of DFB laser
Pipe connects.
Ultraviolet spectrometer is fiber spectrometer.
First photoelectric switching circuit and the second photoelectric switching circuit are InGaAs photodetectors GAP1000L.
The optical fiber that fiber spectrometer uses is the optical fiber of anti-exposure type.
The locking wire absorption cell is the closed air chamber for sealing 30%CO gases fired with glass tube.
Advantageous effect of the present invention：
The present invention accurately controls the temperature of semiconductor laser by temperature controller, and control accuracy is 0.01 DEG C；Electric current
Controller and laser scanning circuit driving semiconductor laser send out laser, and the laser sent out enters beam splitter by optical fiber, point
Light beam is by laser according to 1:4 ratios are divided.Respectively enter infrared multiple reflecting pool and locking wire absorption cell；Main function is pair
The absorption peak of laser is locked, and ensures accuracy of detection；The present invention uses semiconductor laser with tunable, infrared by tuning
The wave band of light can remove the impurity component in gas, improve the accuracy of detection to CO；Using optical signal by locking wire absorption cell and
It is sent into signal acquisition process unit progress signal processing after being converted into electric signal after infrared multiple reflecting pool；Improve detection one
The precision of carbonoxide and accuracy, the present invention control xenon lamp by xenon lamp controller and shine, and the ultraviolet light sent out is injected ultraviolet more
Secondary reflection pond is absorbed, and realizes that accurate detection ultraviolet spectra determines that hydrogen sulfide and sulfur dioxide gas are dense by ultraviolet spectrometer
Degree；It is big to error existing for sulfur hexafluoride gas decomposition product Carbon Monoxide Detection to solve the prior art, the technologies such as accuracy is low
Problem.
Description of the drawings
Fig. 1 is apparatus structure schematic diagram.
Specific implementation mode
A kind of device of detection sulfur hexafluoride gas decomposition product, it includes infrared light generator, and infrared light generator is sent out
Infrared light be divided into two beam infrared lights after beam splitter and sent respectively to infrared multiple reflecting pool and locking wire absorption cell；It is infrared multiple
Reflection tank and locking wire absorption cell are respectively equipped with the first photoelectric switching circuit and the second photoelectric switching circuit, the first photoelectric switching circuit
It is connect respectively with the input terminal of the first lock-in amplifier and the second lock-in amplifier with the second photoelectric switching circuit, the first locking phase is put
The output end of big device and the second lock-in amplifier is connect with signal pickup assembly respectively；The ultraviolet light of xenon lamp output is sent to ultraviolet more
Secondary reflection pond, ultraviolet multiple reflecting pool are connect by optical fiber with ultraviolet spectrometer, the output end and signal acquisition of ultraviolet spectrometer
Device connects, and signal pickup assembly is connect with host computer.
Xenon lamp is connect with xenon lamp controller.
Ultraviolet spectrometer is fiber spectrometer；It is used as beam splitter, ccd array using grating and is used for photon acceptor
Detector, optical signalling injects slit by fixing device, then by being transmitted on grating and generating after collimating microscope group collimation
Diffraction is divided, and is then converged to diffraction light on ccd array detector by focus lamp, finally by Linear CCD Detector
Opto-electronic conversion obtains complete spectrogram.Entire spectra collection process without moving part, therefore the equipment have it is very high steady
It is qualitative, full spectrogram picture can be quickly obtained, on-line optical spectroscopy analysis is very suitable for.
First photoelectric switching circuit and the second photoelectric switching circuit are InGaAs photodetectors GAP1000L.
InGaAs photodetectors GAP1000L is more sensitive to the near infrared spectrum from 800 to 1700 nanometer, while also having quick
Zero-bias rise/fall time.
Present invention employs smallest size of xenon source in current market, length × width × height size more 103 × 50 ×
40 (mm), luminescence band are 185~400nm, cover the ultraviolet band needed for detection, and service life working time is small not less than 4000
When, and light source output stability is high, the ultraviolet light intensity error of output is not more than 1.5%CV, is applicable in very much to close and does portable spectrum
The ultraviolet source of analyzer.
The optical fiber that fiber spectrometer uses is the optical fiber of anti-exposure type.
Since standard silicon optical fiber will appear decaying in transmission wavelength 300nm ultraviolet lights below, forms negative sense and absorb now
As (Spectrum attenuation caused by there is non-pneumatic absorption), the accuracy of gas concentration inverting is seriously affected, the present invention is by examination
It tests, it is found that the optical fiber of anti-exposure type, the type optical fiber have strong ultraviolet transmission ability (transmission spectrum signal can be down to 180nm)
It is more than 80% in the efficiency of transmission of 200~400nm wave bands, near 254nm wave bands very with remarkable uvioresistant damping capacity
It is the ideal tools of a suitable deep ultraviolet (wavelength ＜ 300nm) spectral transmissions to being more than 90%.
Ultraviolet multiple reflecting pool is designed using compact structure, by Shockproof base, pond body, plane mirror, window, standard
The compositions such as SM905 connectors, gas inlet and outlet.It realizes multiple reflections structure, there is optical path length, small；Connector is using stainless
Steel cutting ferrule, sealing valve and " O " type sealing ring have good leakproofness；Pass in and out gloss adjustable structure；Eyeglass plating is ultraviolet
The speculum of highly reflecting films, corrosion-resisting film and protective film has excellent reflectivity, corrosion resistance and resistance to wiping.
Multiple reflecting pool is by Shockproof base, pond body, concave mirror, plane mirror, window, standard fiber optic connector, gas
The compositions such as body inlet and outlet.Light path design is carried out using ZEMAX, realizes multiple reflections structure, there is optical path length, small；Connection
Part uses stainless steel cutting ferrule, sealing valve and " O " type sealing ring, has good leakproofness；Gloss adjustable structure is passed in and out,
Outfit standard FC/APC modular connections；The speculum of infrared highly reflecting films, corrosion-resisting film and protective film has excellent in eyeglass plating
Reflectivity, corrosion resistance and resistance to wiping
Locking wire absorption cell is the closed air chamber for sealing 30%CO gases fired with glass tube, and main function is to laser
The absorption peak of device is locked, and ensures accuracy of detection.
The infrared light generator be semiconductor laser with tunable, it include DFB laser diodes, temperature controller,
Current controller and laser scanning circuit；Temperature controller, current controller and laser scanning circuit respectively with two pole of DFB laser
Pipe connects.
For DFB laser diodes its main feature is that the covering of product line wave-length coverage is larger, range of choice is wide；Emit the line of laser
The extraction of width, single line spectrum signal is more accurate；Electric current tuning rate is smaller, low to the required precision of electric current tuning device.
Current controller carries out laser output wavelength micro- by the Injection Current of control semiconductor diode laser
It adjusts.The precision current driving of laser is formed by three kinds of alien frequencies addition of waveforms, and effect is to ensure：1. laser is made to reach
The DC bias of threshold value can be worked normally；2. low frequency triangular wave；3. high frequency sinusoidal signal.
Temperature controller is to prevent outside environmental elements from ensureing the measurement of system to the influence of the wavelength of transmitted light of light source
Precision and stability has carried out precision temperature control to laser.PID (proportional-integral-differential) temperature control system of structure
It is worked using professional TEC control chip controls semiconductor coolers (TEC), can reach to fast and stable set temperature
Angle value, stability can reach 0.01 DEG C, and corresponding Distributed Feedback Laser stable output wavelength is in 1pm.
Lock-in amplifier will drown out the weak signal extraction in noise and come out, and be amplified, and is effectively improved and is
The whole signal-to-noise ratio of system.
The signal that photoelectric switching circuit transmits is eliminated into the partial noise detected in signal by filtering first, so
The phase for changing reference signal by phase-shift circuit afterwards, it is zero to make reference signal and the phase difference of detection signal, finally utilizes lock
Phase amplifying technique demodulates detection signal, is filtered, and second harmonic signal is obtained, and acquisition dress is sent into after being amplified to it
It sets.
14 data collecting card PCI80258025 of signal pickup assembly are 14 acquisition modules of pci bus, have 4 road moulds
Quasi- input synchronous acquisition function, synchronous highest sampling rate are 400kHz, and asynchronous highest sampling rate is 1.6MHz, built-in 64K
Inside and outside portion's triggering collection pattern is supported in RAM memory, acquisition.
Software function is realized
Software includes mainly that data acquire, and data processing and hardware system control three parts：
Data acquisition module
Software data acquires function, and data are provided for data processing section；It is arranged as required to sampling length, acquisition averagely
The parameters such as number, fit range, acquisition absorb the initial data of information comprising gas, while preserving the gas after multiple cumulative mean
Body absorption line.
Data processing module
According to spectral line to be measured is collected, cumulative mean, Background fitting, linear fitting are carried out, obtains gas absorbance letter
Number, it is finally inversed by under test gas concentration.Concentration value is shown in the form of figure and number and is preserved in real time.
Hardware controls
Control to data collecting card and DA cards：Data collecting card control includes the starting channel number of setting signal sampling
Code, the input range of AD conversion, the parameters such as triggering mode ensure the aobvious of the normal acquisition of system, concentration fitting and concentration value
Show storage etc., realizes continuous on-line measurement.
Software workflow
After software starts, system initialization is carried out first, and software is specially arranged a file for the loading of parameter and deposits
Storage ensures to call in parameter automatically when program operation.Parameter File when last time end of run is read when initialization, is read successfully then
All parameters are both configured to value when last time executes.
Data acquisition and procession
In order to improve signal-to-noise ratio, use limit value filtering, sliding window average in data acquisition and repeatedly cumulative
Average software filtering method reduces signal fluctuation and random error when acquiring, then carries out signal processing analysis.Acquisition is one
A recurrent event carries out multiple cumulative mean to gathered data with initial setting up in software, completes Quick Acquisition.
Data acquisition control is an endless loop process, and data immediately enter sample states after sending out, capture card and CPU into
Row data are very short the time required to exchanging, and trigger signal is waited for immediately after so that capture card has substantially been acquired a spectral signal, with
Just the acquisition of next spectrum；For that can terminate endless loop, cycle is internal to add user's end operation condition judgment, once with
End acquisition is assigned at family, jumps out cycle immediately.
Accuracy of the present invention is much better than the SF6 decomposition product detectors based on electrochemical sensor method.Comparing such as following table
It is shown：
The present invention can accurately detect SF using tunable laser method6Decomposition product CO contents in electrical equipment, using ultraviolet light
Spectrometry can accurately detect SF6Decomposition product SO in electrical equipment2Content and hydrogen sulfide content.SF based on electrochemical sensor method6Point
Solution analyte detection instrument finds there is a small amount of decomposition product H in testing2S (0.9 μ L/L) and SO2The cabin of (1.0 μ L/L), through the invention
Detection discovery decomposition product is 0, confirms the practical zero defect of the present invention, avoids the economic loss caused by instrument wrong report is possible.
Claims (7)
1. a kind of device of detection sulfur hexafluoride gas decomposition product, it includes infrared light generator, what infrared light generator was sent out
Infrared light is divided into two beam infrared lights after beam splitter and is sent respectively to infrared multiple reflecting pool and locking wire absorption cell；It is infrared repeatedly anti-
Penetrate pond and locking wire absorption cell be respectively equipped with the first photoelectric switching circuit and the second photoelectric switching circuit, the first photoelectric switching circuit and
Second photoelectric switching circuit is connect with the input terminal of the first lock-in amplifier and the second lock-in amplifier respectively, the amplification of the first locking phase
The output end of device and the second lock-in amplifier is connect with signal pickup assembly respectively；The ultraviolet light of xenon lamp output is sent to ultraviolet multiple
Reflection tank, ultraviolet multiple reflecting pool are connect by optical fiber with ultraviolet spectrometer, and output end and the signal acquisition of ultraviolet spectrometer fill
Connection is set, signal pickup assembly is connect with host computer.
2. a kind of device of detection sulfur hexafluoride gas decomposition product according to claim 1, it is characterised in that：Xenon lamp and xenon
Lamp controller connects.
3. a kind of device of detection sulfur hexafluoride gas decomposition product according to claim 1, it is characterised in that：It is described infrared
Optical generator is semiconductor laser with tunable, it includes DFB laser diodes, temperature controller, current controller and laser
Scanning circuit；Temperature controller, current controller and laser scanning circuit are connect with DFB laser diodes respectively.
4. a kind of device of detection sulfur hexafluoride gas decomposition product according to claim 1, it is characterised in that：Ultraviolet spectra
Instrument is fiber spectrometer.
5. a kind of device of detection sulfur hexafluoride gas decomposition product according to claim 1, it is characterised in that：Described first
Photoelectric switching circuit and the second photoelectric switching circuit are InGaAs photodetectors GAP1000L.
6. a kind of device of detection sulfur hexafluoride gas decomposition product according to claim 4, it is characterised in that：Fiber spectrum
The optical fiber that instrument uses is the optical fiber of anti-exposure type.
7. a kind of device of detection sulfur hexafluoride gas decomposition product according to claim 1, it is characterised in that：The locking wire
Absorption cell is the closed air chamber for sealing 30%CO gases fired with glass tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810391286.9A CN108287147A (en) | 2018-04-27 | 2018-04-27 | A kind of device and detection method of detection sulfur hexafluoride gas decomposition product |
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| CN201810391286.9A CN108287147A (en) | 2018-04-27 | 2018-04-27 | A kind of device and detection method of detection sulfur hexafluoride gas decomposition product |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709067A (en) * | 2019-02-25 | 2019-05-03 | 国网内蒙古东部电力有限公司电力科学研究院 | One kind is based on SO in optical detection sulfur hexafluoride2And H2The method of S content |
| CN110426371A (en) * | 2019-09-10 | 2019-11-08 | 国网重庆市电力公司电力科学研究院 | A kind of system detecting the HF gas in SF6 electrical equipment |
| CN110553986A (en) * | 2019-08-26 | 2019-12-10 | 国网吉林省电力有限公司四平供电公司 | Multifunctional comprehensive analyzer for each component of decomposition product in SF6 gas |
| CN113567394A (en) * | 2021-08-27 | 2021-10-29 | 武汉大学 | SF based on space light path coupling6Multiple decomposition component detection device |
| CN114460025A (en) * | 2021-12-25 | 2022-05-10 | 深圳供电局有限公司 | Ultraviolet spectrum based internal SF detection of isolation switch6Method for verifying concentration reliability of gas decomposition product |
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