CN106018310A - Gas component detection method and device based on ultraviolet spectroscopy - Google Patents
Gas component detection method and device based on ultraviolet spectroscopy Download PDFInfo
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- CN106018310A CN106018310A CN201610327512.8A CN201610327512A CN106018310A CN 106018310 A CN106018310 A CN 106018310A CN 201610327512 A CN201610327512 A CN 201610327512A CN 106018310 A CN106018310 A CN 106018310A
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- ultraviolet light
- absorption cell
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- 238000001514 detection method Methods 0.000 title claims abstract description 61
- 238000000870 ultraviolet spectroscopy Methods 0.000 title claims abstract description 31
- 238000010521 absorption reaction Methods 0.000 claims abstract description 73
- 238000000862 absorption spectrum Methods 0.000 claims abstract description 33
- 238000010586 diagram Methods 0.000 claims abstract description 11
- 238000010183 spectrum analysis Methods 0.000 claims abstract description 11
- 239000011159 matrix material Substances 0.000 claims description 53
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 27
- 229910052805 deuterium Inorganic materials 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 18
- 238000001228 spectrum Methods 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 18
- 238000004458 analytical method Methods 0.000 abstract description 3
- 230000031700 light absorption Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 152
- 229910018503 SF6 Inorganic materials 0.000 description 16
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 238000007689 inspection Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000003705 background correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- WRQGPGZATPOHHX-UHFFFAOYSA-N ethyl 2-oxohexanoate Chemical group CCCCC(=O)C(=O)OCC WRQGPGZATPOHHX-UHFFFAOYSA-N 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004643 material aging Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 125000000475 sulfinyl group Chemical group [*:2]S([*:1])=O 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
Classifications
-
- 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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- Physics & Mathematics (AREA)
- 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 invention discloses a gas component detection method and device based on ultraviolet spectroscopy. According to the device, an ultraviolet light source is connected with a collimating lens arranged on the outer side of an inlet of a gas absorption cell to provide ultraviolet light during detection; a first concave reflecting mirror arranged on the inner side of the inlet of the gas absorption cell and a second concave reflecting mirror arranged on the inner side of an outlet of the gas absorption cell sequentially reflect collimated ultraviolet light until the ultraviolet light is reflected to a focusing lens; the reflection light reflected sequentially passes by to-be-detected gas injected in advance; a spectrometer performs spectrum analysis on focused reflection light and sends obtained absorption spectra to a data processing device; the data processing device performs comparison and analysis according to the wavelength and power value of input ultraviolet light, gas pressure and temperature of the to-be-detected gas as well as standard diagrams of absorption spectra and prestored gas ultraviolet light absorption spectra and obtains and displays components and content of the to-be-detected gas, and accordingly, the detection efficiency and accuracy of SF6 decomposition components are improved.
Description
Technical field
The present invention relates to gas component live detection technical field in insulator arrangement, more particularly, it relates to
A kind of gas component detection method based on ultraviolet spectroscopy and device.
Background technology
Sulfur hexafluoride (SF6) ring main unit is widely used in electrical network distribution.In recent years, ring main unit fault frequency
Send out, and often discharge toxic gas.Because ring main unit is likely to occur burr during fabrication, at installation and transportation
During superstructure loosening or loose contact occur, these situations all can cause electrode potential to float, locally mistake
Insulation ag(e)ing, metal particle in heat, operation, can produce premature insulator defect, thus cause in various degree
Shelf depreciation (Partial Discharge, be called for short PD), generate bifluoride sulfonyl (SO2F2), fluorination
Thionyl (SOF2), hydrogen sulfide (H2S), Carbon bisulfide (CS2), sulfur dioxide (SO2) etc. many
Plant feature decomposition component.On the one hand these feature decomposition components can corrode the solid insulating material in ring main unit,
Aggravation material aging；On the other hand insulating gas SF6Decomposition can cause the decline of gas-insulated performance, add
Weight PD degree.Ring main unit insulation fault may finally be caused, even cause ring main unit blast, have a strong impact on
The person and equipment safety.Therefore, it is necessary to strengthen the detection to ring main unit gas component.
In the prior art, SF is detected based on infrared spectrometry6It is right that the device of feature decomposition component is capable of
The detection of ring main unit gas component, this device includes: narrow line width regulatable laser, absorption air chamber, light
Electric explorer, data processing module and vacuum pump.But it uses narrow line width regulatable laser, to not
When detecting with characteristic component, need to set different light sources, increase the workload of detection, unfavorable
In scene to SF6The quick detection of feature decomposition component, meanwhile, each feature decomposition component is under infrared light
There is juxtaposition in absworption peak, interferes detection, causes infrared light detection precision to be substantially reduced.
Therefore, detection SF how is improved6The efficiency of decomposition components and precision, becoming those skilled in the art needs
Solve the technical problem that.
Summary of the invention
For solving above-mentioned technical problem, the present invention provides a kind of gas component based on ultraviolet spectroscopy to detect
Method and apparatus, to realize improving detection SF6The efficiency of decomposition components and the purpose of precision.
For achieving the above object, the present invention provides following technical scheme:
A kind of gas component based on ultraviolet spectroscopy detection device, including: ultraviolet source, GAS ABSORPTION
Pond, spectrogrph and data processing equipment；
Described ultraviolet source is connected with the collimating mirror outside the entrance being arranged at described gas absorption cell, is used for
Ultraviolet light required when detecting is provided；
The inlet inside of described gas absorption cell is provided with the first concave reflective mirror, described gas absorption cell
It is provided with the second concave reflective mirror inside outlet, outside the outlet of described gas absorption cell, is provided with focus lamp；
Described first concave reflective mirror and described second concave reflective mirror reflect successively and collimate through described collimating mirror
Described ultraviolet light, until reflexing to described focus lamp, wherein, the reflection light reflected successively is by advance
Inject the gas to be measured in described gas absorption cell；
Described spectrogrph is connected with described focus lamp, the described reflection light after focusing on described focus lamp
Carry out spectrum analysis, and be sent to described data processing equipment by analyzing the absorption spectrum obtained；
Described data processing equipment is connected with described spectrogrph, for the ripple of the described ultraviolet light according to input
The air pressure of gas to be measured and temperature in long and performance number, described gas absorption cell, described absorption spectrum and
The standard diagram of the gas uv absorption spectra prestored is analyzed, and obtains and shows described
The component of gas to be measured and content.
Preferably, described gas absorption cell, including: housing, air inlet, gas outlet, the first control valve,
Second control valve, vacuum pump, Pressure gauge, thermometer, the first matrix reflecting mirror and at least two second are recessed
Type reflecting mirror；
One end outside the entrance of described housing is connected with collimating mirror, the one end outside described housing outlets with
Focus lamp is connected, and described housing is used for storing gas to be measured；
Described air inlet is arranged on described housing and is connected with described first control valve, is used for injecting described
Gas to be measured；
Described gas outlet is arranged on described housing and is connected with described second control valve, is used for discharging described
Gas to be measured；
Described vacuum pump is connected with described second control valve, for before detection described housing being evacuated to vacuum
State, and after detection terminates, the gas described to be measured in described housing is pumped discharge；
Described Pressure gauge is arranged on described housing, described gas to be measured in being used for measuring and show described housing
The pressure of body；
Described thermometer is arranged on described housing, described gas to be measured in being used for measuring and show described housing
The temperature of body；
Described first matrix reflecting mirror is arranged at the inlet inside of described housing；
Second matrix reflecting mirror described at least two is arranged at inside the outlet of described housing and is positioned at same hanging down
Straight plane, the size being smaller in size than described first matrix reflecting mirror of described second matrix reflecting mirror；
It is flat that the described first matrix reflecting mirror described collimating mirror of reception generates after being collimated by described ultraviolet light
Row light, and it is reflected to a described second matrix reflecting mirror, and receiving described second matrix reflecting mirror
The reflection light back reflection of reflection gives another described second matrix reflecting mirror, by described second matrix reflecting mirror
Again by described reflected light back to described first matrix reflecting mirror, described reflection light is at described first matrix
Reflect successively between second matrix reflecting mirror described in reflecting mirror and at least two, until reflexing to described focusing
Mirror.
Preferably, also include: exhaust gas processing device；
Described exhaust gas processing device is connected with described vacuum pump, for being entered by the gas that described vacuum pump is extracted out
Row processes.
Preferably, described housing be length range be 22-26cm, width range is 9.5-13.5cm, highly
Scope is the rectangle housing of 8.5-12.5cm, and the material of described housing is the corrosion resistant plate with thickness,
And it is coated with plated film on the inner surface of described housing；
The diameter range of described air inlet and described gas outlet is 5-7mm.
Preferably, described first control valve and described second control valve are identical or different, including: hand-operated valve,
Electromagnetic valve, pneumatic operated valve or hydraulic valve.
Preferably, described ultraviolet source, including: deuterium lamp, and the deuterium lamp temperature being connected with described deuterium lamp
Controller；
Described deuterium lamp, is connected by the input of optical fiber with described collimating mirror, is used for providing described in detection and treats
Survey ultraviolet light required during gas；
Described deuterium lamp temperature controller, temperature during for controlling described deuterium lamp emitting ultraviolet light.
Preferably, described deuterium lamp, by the input phase of single-mode fiber and fibre-optical splice with described collimating mirror
Even.
Preferably, described data processing equipment, including: computer or panel computer.
Preferably, described data processing equipment, it is connected with described spectrogrph by USB (universal serial bus).
A kind of gas component detection method based on ultraviolet spectroscopy, it is adaptable to any one in claim 1-9
Gas component based on ultraviolet spectroscopy detection device described in Xiang, described gas based on ultraviolet spectroscopy
Component detection device, including: ultraviolet source, gas absorption cell, spectrogrph and data processing equipment；
Described ultraviolet source collimating mirror outside the entrance being arranged at described gas absorption cell launches ultraviolet
Light；
It is arranged at the first matrix reflecting mirror of the inlet inside of described gas absorption cell and is arranged at described gas
The second matrix reflecting mirror inside the outlet of absorption cell, reflects described in after described collimating mirror collimates successively
Ultraviolet light, until reflexing to the focus lamp being arranged at outside the outlet of described gas absorption cell, wherein, depends on
The reflection light of secondary reflection is by the gas to be measured being previously implanted in described gas absorption cell；
Described reflection light after described focus lamp is focused on by described spectrogrph carries out spectrum analysis, and will analyze
The absorption spectrum obtained is sent to described data processing equipment；
Described data processing equipment is inhaled according to wavelength and performance number, the described gas of the described ultraviolet light of input
Receive the air pressure of gas to be measured in pond and temperature, described absorption spectrum and the gas ultraviolet light that prestores is inhaled
The standard diagram receiving spectrum is analyzed, and obtains and show component and the content of described gas to be measured.
From technique scheme it can be seen that the present invention provide a kind of based on ultraviolet spectroscopy gas group
Go-on-go is surveyed device and is included: ultraviolet source, gas absorption cell, spectrogrph and data processing equipment；Ultraviolet light
Source is connected with the collimating mirror outside the entrance being arranged at gas absorption cell, it is provided that ultraviolet required during detection
Light；The inlet inside of gas absorption cell is provided with the first concave reflective mirror, inside the outlet of gas absorption cell
It is provided with the second concave reflective mirror, outside the outlet of gas absorption cell, is provided with focus lamp；First spill is anti-
Penetrate mirror and the second concave reflective mirror reflects the ultraviolet light that collimated mirror collimates successively, until reflexing to focus lamp,
Wherein, the reflection light reflected successively is by the gas to be measured being previously implanted in gas absorption cell；Spectrogrph with
Focus lamp is connected, and the reflection light after focusing on focus lamp carries out spectrum analysis, and will analyze the absorption obtained
Spectrum is sent to data processing equipment；Described data processing equipment is connected with described spectrogrph, for basis
The air pressure of gas to be measured and temperature in the wavelength of described ultraviolet light of input and performance number, described gas absorption cell
Degree, described absorption spectrum and the standard diagram of gas uv absorption spectra prestored contrast
Analyze, obtain and show component and the content of described gas to be measured.
As can be seen here, the present invention uses ultraviolet source, stable ultraviolet light can be produced, according to spectrum number
According to storehouse, SF6Decomposition components less in the absorption spectrum overlap of ultraviolet band, relative to prior art, inspection
Survey precision higher, additionally, use ultraviolet source to be capable of SF6Detect while different decomposition component, carry
High detection efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality
Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that below,
Accompanying drawing in description is only embodiments of the invention, for those of ordinary skill in the art, not
On the premise of paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
A kind of based on ultraviolet spectroscopy the gas component detection device that Fig. 1 provides for the embodiment of the present invention one
Structural representation；
A kind of gas component detection device sent out based on ultraviolet spectra that Fig. 2 provides for the embodiment of the present invention two
Another kind of structural representation；
A kind of based on ultraviolet spectroscopy the gas component detection device that Fig. 3 provides for the embodiment of the present invention two
Another structural representation；
A kind of based on ultraviolet spectroscopy the gas component detection device that Fig. 4 provides for the embodiment of the present invention three
The structural representation of medium ultraviolet light source；
A kind of based on ultraviolet spectroscopy the gas component detection method that Fig. 5 provides for the embodiment of the present invention four
Flow chart.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the present invention, and
It is not all, of embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing
Go out the every other embodiment of described acquisition under creative work premise, broadly fall into the scope of protection of the invention.
The embodiment of the invention discloses a kind of gas component detection method based on ultraviolet spectroscopy and device,
To realize improving detection SF6The efficiency of decomposition components and the purpose of precision.
Embodiment one
The embodiment of the present invention one provides a kind of gas component based on ultraviolet spectroscopy to detect device, such as accompanying drawing 1
The knot of a kind of gas component based on ultraviolet spectroscopy detection device disclosed in the embodiment of the present invention one illustrated
Structure schematic diagram, described device, including: at ultraviolet source 1, gas absorption cell 2, spectrogrph 3 and data
Reason device 4；
Described ultraviolet source 1 is connected with the collimating mirror 5 outside the entrance being arranged at described gas absorption cell 2,
Ultraviolet light required during for providing detection；
The inlet inside of described gas absorption cell 2 is provided with the first concave reflective mirror, described gas absorption cell 2
Outlet inside be provided with the second concave reflective mirror, be provided with poly-outside the outlet of described gas absorption cell 2
Burnt mirror 6；
Described first concave reflective mirror and described second concave reflective mirror reflect through described collimating mirror 5 accurate successively
Straight described ultraviolet light, until reflexing to described focus lamp 6, wherein, reflection light when reflecting successively passes through
It is previously implanted the gas to be measured in described gas absorption cell 2；
Described spectrogrph 3 is connected with described focus lamp 6, described in after focusing on described focus lamp 6
Reflection light carries out spectrum analysis, and is sent to described data processing equipment 4 by analyzing the absorption spectrum obtained；
Described data processing equipment 4 is connected with described spectrogrph 3, for the described ultraviolet light according to input
The air pressure of 2 gases to be measured and temperature in wavelength and performance number, described gas absorption cell, described absorption spectrum with
And the standard diagram of the gas uv absorption spectra prestored is analyzed, obtains and show institute
State component and the content of gas to be measured.
Needing to illustrate, described collimating mirror 5 generates directional light after being collimated by described ultraviolet light, described
First concave reflective mirror receives described directional light, and is reflected to a described second concave reflective mirror, and
Receive the reflection light back reflection of described second concave reflective mirror reflection to another described second concave reflective
Mirror, by described second concave reflective mirror again by described reflected light back to described first concave reflective mirror,
Described reflection light described in described first concave reflective mirror and at least two between the second concave reflective mirror successively
Reflection, until reflexing to described focus lamp 6.
Also need to illustrate, before described gas to be measured is injected described gas absorption cell 2, first
Pure background gas SF it is filled with in described gas absorption cell 26, the described spectrogrph 3 described back of the body to being filled with
Prosperous body SF6Carry out spectrum analysis, obtain described background gas SF6Absorption spectrum；Then to GAS ABSORPTION
Pond 2 carries out evacuation process, more described gas to be measured is filled with described gas absorption cell, carries out described to be measured
Gas component and the detection of content, described spectrogrph 3, when described gas to be measured is carried out spectrum analysis, needs
Want the absorption spectrum of background correction gas SF6, then be sent to analyzing the absorption spectrum obtained at described data
Reason device 4.
Preferably, described data processing equipment 4, including: computer or panel computer.
Preferably, described data processing equipment 4, it is connected with described spectrogrph 3 by USB (universal serial bus).
Can by a kind of gas component based on ultraviolet spectroscopy detection device disclosed in the invention described above embodiment
To draw, the present embodiment medium ultraviolet light source is connected with the collimating mirror outside the entrance being arranged at gas absorption cell,
Ultraviolet light required when detecting is provided；The inlet inside of gas absorption cell is provided with the first concave reflective mirror,
It is provided with the second concave reflective mirror inside the outlet of gas absorption cell, arranges outside the outlet of gas absorption cell
There is focus lamp；First concave reflective mirror and the second concave reflective mirror reflect the ultraviolet of collimated mirror collimation successively
Light, until reflexing to focus lamp, wherein, the reflection light reflected successively is by being previously implanted gas absorption cell
Interior gas to be measured；Spectrogrph is connected with focus lamp, and the reflection light after focusing on focus lamp carries out spectrum and divides
Analysis, and it is sent to data processing equipment by analyzing the absorption spectrum obtained；Described data processing equipment and institute
State spectrogrph to be connected, for wavelength and performance number, the described GAS ABSORPTION of the described ultraviolet light according to input
The air pressure of gas to be measured and temperature, described absorption spectrum and the gas UV Absorption prestored in pond
The standard diagram of spectrum is analyzed, and obtains and show component and the content of described gas to be measured.
As can be seen here, the present invention uses ultraviolet source, stable ultraviolet light can be produced, according to spectrum number
According to storehouse, SF6Decomposition components less in the absorption spectrum overlap of ultraviolet band, relative to prior art, inspection
Survey precision higher, additionally, use ultraviolet source to be capable of SF6Detect while different decomposition component, carry
High detection efficiency.
Embodiment two
A kind of based on ultraviolet spectroscopy the gas component detection dress provided based on the invention described above embodiment one
Put, a kind of based on ultraviolet spectroscopy the gas component inspection that the embodiment of the present invention two as shown in Figure 2 provides
Survey the another kind of structural representation of device, wherein, described gas absorption cell 2, including:
Housing 20, air inlet 21, gas outlet the 22, first control valve the 23, second control valve 24, vacuum
Pump 25, Pressure gauge 26, thermometer the 27, first matrix reflecting mirror 28 and the reflection of at least two the second matrix
Mirror 29；
One end outside the entrance of described housing 20 is connected with collimating mirror 5, outside the outlet of described housing 20
One end be connected with focus lamp 6, described housing 20, be used for storing gas to be measured；
Described air inlet 21 is arranged on described housing 20 and is connected with described first control valve 23, is used for
Inject described gas to be measured；
Described gas outlet 22 is arranged on described housing 20 and is connected with described second control valve 24, is used for
Discharge described gas to be measured；
Described vacuum pump 25 is connected with described second control valve 24, for before detection by described housing 20
It is evacuated to vacuum state, and after detection terminates, the gas described to be measured in described housing 20 is pumped discharge；
Described Pressure gauge 26 is arranged on described housing 20, is used for measuring and show institute in described housing 20
State the pressure of gas to be measured；
Described thermometer 27 is arranged on described housing 20, is used for measuring and show institute in described housing 20
State the temperature of gas to be measured；
Described first matrix reflecting mirror 28 is arranged at the inlet inside of described housing 20；
Described at least two, the second matrix reflecting mirror 29 is arranged at inside the outlet of described housing 20 and is positioned at
Same vertical plane, described second matrix reflecting mirror 29 be smaller in size than described first matrix reflecting mirror 28
Size；
Described first matrix reflecting mirror 28 receives and generates after described ultraviolet light is collimated by described collimating mirror 5
Directional light, and be reflected to a described second matrix reflecting mirror 29, and receiving described second matrix
The reflection light back reflection of reflecting mirror 29 reflection gives another described second matrix reflecting mirror 29, by described second
Matrix reflecting mirror 29 is again by described reflected light back to described first matrix reflecting mirror 28, described reflection light
Reflecting successively between second matrix reflecting mirror 29 described in described first matrix reflecting mirror 28 and at least two,
Until reflexing to described focus lamp 6.
Need to illustrate, be arranged at the described second matrix reflection inside the outlet of described housing 20
The number of mirror 29 is not limited in two, can be more, and multiple described second matrix reflecting mirrors 29 set
It is placed in same vertical plane, and described second matrix reflecting mirror 29 and described first matrix reflecting mirror 28 are successively
Reflect the described ultraviolet light through described collimating mirror 5 collimation, until reflexing to described focus lamp 6.
Preferably, described housing 20 is 22-26cm for length range, and width range is 9.5-13.5cm,
Altitude range is the rectangle housing of 8.5-12.5cm, and the material of described housing 20 is have thickness stainless
It is coated with plated film on steel plate, and the inner surface of described housing 20；
The diameter range of described air inlet 21 and described gas outlet 22 is 5-7mm.
Preferably, described first control valve 23 and described second control valve 24 are identical or different, including: hands
Dynamic valve, electromagnetic valve, pneumatic operated valve or hydraulic valve.
Preferably, a kind of based on ultraviolet spectroscopy gas component detection device as shown in Figure 3 is another
Plant structural representation, on the basis of the invention described above embodiment two, also include: exhaust gas processing device 30；
Described exhaust gas processing device 30 is connected with described vacuum pump 25, for being extracted out by described vacuum pump 25
Gas process.
The embodiment of the present invention uses ultraviolet source, stable ultraviolet light can be produced, according to spectra database,
SF6Decomposition components less in the absorption spectrum overlap of ultraviolet band, relative to prior art, accuracy of detection
Higher；Ultraviolet source is used to be capable of SF6Detect while different decomposition component, improve detection efficiency.
Additionally, the size of gas absorption cell disclosed in the embodiment of the present invention is less, easy to carry；The material of housing
For having the corrosion resistant plate of thickness, and on the inner surface of housing, it is coated with plated film, reduces housing to gas
The absorption of molecule and the gas corrosion to housing, improve the rotproofness of housing.
Further, also including exhaust gas processing device, exhaust gas processing device is connected with vacuum pump, and being used for will
The gas that vacuum pump is extracted out processes, it is possible to process the gas to be measured discharged after detection, it is to avoid
Pollute environment.
Embodiment three
A kind of based on ultraviolet spectroscopy the gas provided based on the invention described above embodiment one and embodiment two
Component detection device, a kind of based on ultraviolet spectroscopy the gas that the embodiment of the present invention three as shown in Figure 4 provides
The structural representation of body component detection device medium ultraviolet light source, described ultraviolet source 1, including: deuterium lamp 11,
And the deuterium lamp temperature controller 12 being connected with described deuterium lamp 11；
Described deuterium lamp 11, is connected by the input of optical fiber with described collimating mirror 5, is used for providing detection institute
State ultraviolet light required during gas to be measured；
Described deuterium lamp temperature controller 12, temperature during for controlling described deuterium lamp 11 emitting ultraviolet light.
Can by a kind of gas component based on ultraviolet spectroscopy detection device disclosed in the invention described above embodiment
To draw, the embodiment of the present invention further correspondence on the basis of embodiment one and embodiment two discloses purple
The structure of outer light source, including deuterium lamp, and the deuterium lamp temperature controller being connected with deuterium lamp；Deuterium lamp, passes through
Optical fiber is connected with the input of collimating mirror, it is provided that detect ultraviolet light required during gas to be measured；Deuterium lamp temperature
Degree controller, controls temperature during deuterium lamp emitting ultraviolet light, further ensures deuterium lamp during detection
Launch ultraviolet light during detection at the same temperature, it is ensured that the accuracy of detection.
Embodiment four
The embodiment of the present invention four provides a kind of gas component detection method based on ultraviolet spectroscopy, such as accompanying drawing 5
The stream of a kind of gas component detection method based on ultraviolet spectroscopy disclosed in the embodiment of the present invention four illustrated
Cheng Tu, described method, including:
S101: described ultraviolet source collimating mirror outside the entrance being arranged at described gas absorption cell is launched
Ultraviolet light；
S102: be arranged at the first matrix reflecting mirror of the inlet inside of described gas absorption cell and be arranged at institute
State the second matrix reflecting mirror inside the outlet of gas absorption cell, reflect successively after described collimating mirror collimates
Described ultraviolet light, until reflexing to the focus lamp being arranged at outside the outlet of described gas absorption cell, its
In, the reflection light reflected successively is by the gas to be measured being previously implanted in described gas absorption cell；
Described reflection light after described focus lamp is focused on by S103: described spectrogrph carries out spectrum analysis, and
It is sent to described data processing equipment by analyzing the absorption spectrum obtained；
S104: described data processing equipment is according to the wavelength of described ultraviolet light of input and performance number, described
In gas absorption cell, the air pressure of gas to be measured and temperature, described absorption spectrum and the gas that prestores are purple
The standard diagram of outer optical absorption spectra is analyzed, obtain and show described gas to be measured component and
Content.
Can by gas component detection method based on ultraviolet spectroscopy a kind of disclosed in the invention described above embodiment
To draw, the present embodiment medium ultraviolet light source is launched to the collimating mirror being arranged at outside the entrance of gas absorption cell
Ultraviolet light；It is arranged at the first matrix reflecting mirror of the inlet inside of gas absorption cell and is arranged at GAS ABSORPTION
The second matrix reflecting mirror inside the outlet in pond, reflects the ultraviolet light after collimated mirror collimation successively, until
Reflexing to the focus lamp being arranged at outside the outlet of gas absorption cell, wherein, the reflection light reflected successively leads to
Cross the gas to be measured being previously implanted in gas absorption cell；Reflection light after focus lamp is focused on by spectrogrph is carried out
Spectrum analysis, and it is sent to data processing equipment by analyzing the absorption spectrum obtained；Described data process dress
Put the gas of gas to be measured in the wavelength of described ultraviolet light according to input and performance number, described gas absorption cell
Pressure and temperature, described absorption spectrum and the standard diagram of gas uv absorption spectra prestored enter
Row relative analysis, obtains and shows component and the content of described gas to be measured.
As can be seen here, the present invention uses ultraviolet source, stable ultraviolet light can be produced, according to spectrum number
According to storehouse, SF6Decomposition components less in the absorption spectrum overlap of ultraviolet band, relative to prior art, inspection
Survey precision higher, additionally, use ultraviolet source to be capable of SF6Detect while different decomposition component, carry
High detection efficiency.
It should be noted that each embodiment in this specification all uses the mode gone forward one by one to describe, each
What embodiment stressed is all the difference with other embodiments, identical similar between each embodiment
Part see mutually.For device disclosed in embodiment, disclosed in itself and embodiment
Method is corresponding, so describe is fairly simple, relevant part sees method part and illustrates.
Also, it should be noted in this article, the relational terms of such as first and second or the like is only used
One entity or operation are separated with another entity or operating space, and not necessarily requires or secretly
Show relation or the order that there is any this reality between these entities or operation.And, term " bag
Include ", " comprising " or its any other variant be intended to comprising of nonexcludability, so that bag
Include the key element that the process of a series of key element, method, article or equipment are intrinsic, or also include for
The key element that these processes, method, article or equipment are intrinsic.In the case of there is no more restriction,
The key element limited by statement " including ... ", it is not excluded that including the process of described key element, side
Method, article or equipment there is also other identical element.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses
The present invention.Multiple amendment to these embodiments will be aobvious and easy for those skilled in the art
See, generic principles defined herein can without departing from the spirit or scope of the present invention,
Realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein,
And it is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. gas component based on a ultraviolet spectroscopy detection device, it is characterised in that including: ultraviolet
Light source, gas absorption cell, spectrogrph and data processing equipment；
Described ultraviolet source is connected with the collimating mirror outside the entrance being arranged at described gas absorption cell, is used for
Ultraviolet light required when detecting is provided；
The inlet inside of described gas absorption cell is provided with the first concave reflective mirror, described gas absorption cell
It is provided with the second concave reflective mirror inside outlet, outside the outlet of described gas absorption cell, is provided with focus lamp；
Described first concave reflective mirror and described second concave reflective mirror reflect successively and collimate through described collimating mirror
Described ultraviolet light, until reflexing to described focus lamp, wherein, the reflection light reflected successively is by advance
Inject the gas to be measured in described gas absorption cell；
Described spectrogrph is connected with described focus lamp, the described reflection light after focusing on described focus lamp
Carry out spectrum analysis, and be sent to described data processing equipment by analyzing the absorption spectrum obtained；
Described data processing equipment is connected with described spectrogrph, for the ripple of the described ultraviolet light according to input
The air pressure of gas to be measured and temperature in long and performance number, described gas absorption cell, described absorption spectrum and
The standard diagram of the gas uv absorption spectra prestored is analyzed, and obtains and shows described
The component of gas to be measured and content.
Device the most according to claim 1, it is characterised in that described gas absorption cell, including:
Housing, air inlet, gas outlet, the first control valve, the second control valve, vacuum pump, Pressure gauge, temperature
Table, the first matrix reflecting mirror and at least two the second matrix reflecting mirror；
One end outside the entrance of described housing is connected with collimating mirror, the one end outside described housing outlets with
Focus lamp is connected, and described housing is used for storing gas to be measured；
Described air inlet is arranged on described housing and is connected with described first control valve, is used for injecting described
Gas to be measured；
Described gas outlet is arranged on described housing and is connected with described second control valve, is used for discharging described
Gas to be measured；
Described vacuum pump is connected with described second control valve, for before detection described housing being evacuated to vacuum
State, and after detection terminates, the gas described to be measured in described housing is pumped discharge；
Described Pressure gauge is arranged on described housing, described gas to be measured in being used for measuring and show described housing
The pressure of body；
Described thermometer is arranged on described housing, described gas to be measured in being used for measuring and show described housing
The temperature of body；
Described first matrix reflecting mirror is arranged at the inlet inside of described housing；
Second matrix reflecting mirror described at least two is arranged at inside the outlet of described housing and is positioned at same hanging down
Straight plane, the size being smaller in size than described first matrix reflecting mirror of described second matrix reflecting mirror；
It is flat that the described first matrix reflecting mirror described collimating mirror of reception generates after being collimated by described ultraviolet light
Row light, and it is reflected to a described second matrix reflecting mirror, and receiving described second matrix reflecting mirror
The reflection light back reflection of reflection gives another described second matrix reflecting mirror, by described second matrix reflecting mirror
Again by described reflected light back to described first matrix reflecting mirror, described reflection light is at described first matrix
Reflect successively between second matrix reflecting mirror described in reflecting mirror and at least two, until reflexing to described focusing
Mirror.
Device the most according to claim 2, it is characterised in that also include: exhaust gas processing device；
Described exhaust gas processing device is connected with described vacuum pump, for being entered by the gas that described vacuum pump is extracted out
Row processes.
Device the most according to claim 2, it is characterised in that described housing is that length range is
22-26cm, width range is 9.5-13.5cm, and altitude range is the rectangle housing of 8.5-12.5cm, institute
The material stating housing is to be coated with plated film on the corrosion resistant plate with thickness, and the inner surface of described housing；
The diameter range of described air inlet and described gas outlet is 5-7mm.
Device the most according to claim 2, it is characterised in that described first control valve and described
Two control valves are identical or different, including: hand-operated valve, electromagnetic valve, pneumatic operated valve or hydraulic valve.
Device the most according to claim 1, it is characterised in that described ultraviolet source, including: deuterium
Lamp, and the deuterium lamp temperature controller being connected with described deuterium lamp；
Described deuterium lamp, is connected by the input of optical fiber with described collimating mirror, is used for providing described in detection and treats
Survey ultraviolet light required during gas；
Described deuterium lamp temperature controller, temperature during for controlling described deuterium lamp emitting ultraviolet light.
Device the most according to claim 6, it is characterised in that described deuterium lamp, passes through single-mode fiber
It is connected with the input of fibre-optical splice with described collimating mirror.
Device the most according to claim 1, it is characterised in that described data processing equipment, including:
Computer or panel computer.
Device the most according to claim 1, it is characterised in that described data processing equipment, passes through
USB (universal serial bus) is connected with described spectrogrph.
10. a gas component detection method based on ultraviolet spectroscopy, it is characterised in that be applicable to power
Profit requires in 1-9 gas component based on the ultraviolet spectroscopy detection device described in any one, described based on
The gas component detection device of ultraviolet spectroscopy, including: ultraviolet source, gas absorption cell, spectrogrph and
Data processing equipment；
Described ultraviolet source collimating mirror outside the entrance being arranged at described gas absorption cell launches ultraviolet
Light；
It is arranged at the first matrix reflecting mirror of the inlet inside of described gas absorption cell and is arranged at described gas
The second matrix reflecting mirror inside the outlet of absorption cell, reflects described in after described collimating mirror collimates successively
Ultraviolet light, until reflexing to the focus lamp being arranged at outside the outlet of described gas absorption cell, wherein, depends on
The reflection light of secondary reflection is by the gas to be measured being previously implanted in described gas absorption cell；
Described reflection light after described focus lamp is focused on by described spectrogrph carries out spectrum analysis, and will analyze
The absorption spectrum obtained is sent to described data processing equipment；
Described data processing equipment is inhaled according to wavelength and performance number, the described gas of the described ultraviolet light of input
Receive the air pressure of gas to be measured in pond and temperature, described absorption spectrum and the gas ultraviolet light that prestores is inhaled
The standard diagram receiving spectrum is analyzed, and obtains and show component and the content of described gas to be measured.
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| CN201610327512.8A CN106018310A (en) | 2016-05-17 | 2016-05-17 | Gas component detection method and device based on ultraviolet spectroscopy |
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| CN201610327512.8A CN106018310A (en) | 2016-05-17 | 2016-05-17 | Gas component detection method and device based on ultraviolet spectroscopy |
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| CN107064036A (en) * | 2016-11-24 | 2017-08-18 | 云南电网有限责任公司电力科学研究院 | A kind of ring main unit gas on-line detecting system and method |
| CN107219180A (en) * | 2017-06-15 | 2017-09-29 | 中国科学院合肥物质科学研究院 | A kind of portable detection of gas with multiple constituents device |
| CN107941335A (en) * | 2017-10-13 | 2018-04-20 | 北京工业大学 | Sensor fibre and fibre-optical sensing device |
| CN108956517A (en) * | 2018-09-11 | 2018-12-07 | 哈尔滨工业大学 | A kind of real-time online continuously monitors the device and its application method of sulfate concentration |
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| 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 |
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| CN114002176A (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 component gas detection device based on ultraviolet absorption spectrum |
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| CN109975676A (en) * | 2019-05-05 | 2019-07-05 | 国网江苏省电力有限公司 | The monitoring device and system of air insulating device |
| WO2021063003A1 (en) * | 2019-09-30 | 2021-04-08 | 南京云创大数据科技股份有限公司 | Gas spectrum analyzer |
| 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 |
| CN114002176A (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 component gas detection device based on ultraviolet absorption spectrum |
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