CN107167428A - A kind of absorption cell detected for gas - Google Patents
A kind of absorption cell detected for gas Download PDFInfo
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- CN107167428A CN107167428A CN201710580841.8A CN201710580841A CN107167428A CN 107167428 A CN107167428 A CN 107167428A CN 201710580841 A CN201710580841 A CN 201710580841A CN 107167428 A CN107167428 A CN 107167428A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 56
- 239000007789 gas Substances 0.000 claims abstract description 96
- 239000000835 fiber Substances 0.000 claims abstract description 46
- 230000003287 optical effect Effects 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 239000013307 optical fiber Substances 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims description 3
- 241000208340 Araliaceae Species 0.000 claims 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 claims 1
- 235000003140 Panax quinquefolius Nutrition 0.000 claims 1
- 235000008434 ginseng Nutrition 0.000 claims 1
- 230000005622 photoelectricity Effects 0.000 claims 1
- 230000001681 protective effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 3
- 239000011796 hollow space material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000035939 shock Effects 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000012812 sealant material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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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
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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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)
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- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of absorption cell detected for gas, it includes：Fiber optic collimator module, focus module, the cavity between fiber optic collimator module and focus module, wherein fiber optic collimator module include optical fiber collimator, accurate light modulation structure, fiber optic collimator module fixing end；Include condenser lens, focus module fixing end, the optical axis of the condenser lens and the central axis of cavity air chamber, the optical axis coincidence of fiber optic collimator module in focus module；The two ends of cavity respectively with fiber optic collimator module fixing end and focus module fixing end airtight connection, the hollow space of cavity is the air chamber for accommodating under test gas, its side is provided with air inlet and gas outlet, and top is used to install at least one sensor to detect the parameters such as the temperature and pressure of air chamber provided with screw.The gas absorption cell has the advantages that volume is small, light path is short, it is simple in construction, be easily installed debugging and safeguard, available for ppm grades of Gases Dissolved in Transformer Oil of detection.
Description
Technical field
The invention belongs to precision detecting instrument field, and in particular to a kind of absorption cell detected for gas, more particularly to
A kind of gas absorption cell that can be used for detecting Gases Dissolved in Transformer Oil.
Background technology
It is more and more extensive using the technology application in the industry of spectroscopy measurements one-component or multicomponent gas.Than
As laser spectrum measuring instrument can be used for monitoring Gases Dissolved in Transformer Oil.Due to " fingerprint " characteristic that gas absorbs, light exists
After the absorption cell full of detected gas, the light of some single-frequency is absorbed by gas in pond, and single-frequency is reflected
Gas componant, the change of single-frequency light intensity then reflects the concentration of detected gas.The detection process of this gas componant, extensively
It is general to be applied to industrial production and environmental monitoring.Many detection techniques are presently, there are, it is infrared in mainly using and near red
External spectrum detection technique.Due to the cross-sectional area very little that gas absorbs, so generally requiring by increasing light path to improve gas
Detection sensitivity.
The gas absorption cell of prior art, mainly there is long light path pond and the class of adjustable optical path pool two.Long light path pond, by inhaling
Receives pond inner plenum places multi-disc speculum so that light completes multiple reflections in air chamber, and light path is increased using short distance,
Improve detection sensitivity.The structure of adjustable optical path pool is basic with long light path pond, the difference is that can be controlled by adjusting order of reflection
The change of light path processed.Both of which is in the hope of reaching target detection sensitivity by controlling light path.
Optical element in long light path pond and adjustable optical path pool is more, and light modulation structure is complicated so that its volume is relatively large.
In addition, long light path pond and adjustable optical path pool require high to the coating process of speculum, installation is difficult in maintenance and cost is high, anti-vibration resistance
Difference, thus environmental suitability is poor.
The content of the invention
To solve the long light path pond of prior art and the above mentioned problem of adjustable optical path pool, it is short that the present invention provides a kind of small volume
Light path gas absorption cell, the small short light path gas absorption cell of volume changes the labyrinth in existing long light path pond, overcomes
The defect that light path adjustment difficulty is big, shock resistance is poor etc..Concrete technical scheme is as follows.
A kind of gas absorption cell detected for gas, it includes：For the fiber optic collimator for being collimated the light of light source
Module, it is accurate positioned at optical fiber for being focused and making the focus module of focusing light outgoing after collimation by the light of cavity air chamber
Straight cavity between module and focus module, for introducing and discharging under test gas, wherein, the fiber optic collimator module includes light
Fine collimater, the accurate light modulation structure for adjusting light path, for by accurate light modulation structure and cavity one end is closed is fixed on one
In the central through hole of the accurate light modulation structure of collimation lens end insertion of the fiber optic collimator module fixing end risen, wherein optical fiber collimator
And it is fixed；Include condenser lens in the focus module, for fixed focus lenses and with the cavity other end is closed is fixed on
Focus module fixing end together, the optical axis of the condenser lens and the central axis of cavity air chamber, the optical axis of fiber optic collimator module
Overlap；The two ends of the cavity respectively with fiber optic collimator module fixing end and focus module fixing end airtight connection, in cavity
Empty part is that the light beam after the air chamber for accommodating under test gas, collimation is transferred to focus module by air chamber, and its side is provided with
Air inlet and gas outlet, and connecting hole such as screw and/or jack such as are provided with for being attached at top in air chamber wall
A few sensor, preferably two or more sensor are used for detecting the parameters such as the temperature and pressure of air chamber, so as to for detection
As a result it is modified.
Due to not including the speculum for being used for realizing light reflection in gas absorption cell so that gas absorption cell is simple in construction,
It is easy to install dismounting and repeatedly installing/dismounting can't influence accuracy of detection, this simple structure without speculum enhances gas
The shock resistance and environmental suitability of absorption cell, cause the air chamber of absorption cell to hold while the air chamber structure of through type, short light path is designed
Product is small, correspondingly reduces the volume of gas absorption cell.Preferably, gas absorption cell can reach under the conditions of small volume, short light path
To very high accuracy of detection, such as the application in Gases Dissolved in Transformer Oil detection, better than national grid company standard rule
Fixed minimum detection limit.
According to an aspect of the present invention, the light of above-mentioned light source can be any light that can be used for detecting gas, wavelength model
Enclose for 200-6000nm, preferably 200-1800nm, including but not limited to visible ray, ultraviolet light, infrared light and/or near infrared light.
Further, it is preferable to the just laser launched from light source.
According to an aspect of the present invention, the fiber optic collimator module also includes fiber optic collimator module protection shell, for covering
Firmly optical fiber collimator, accurate light modulation structure, fiber optic collimator module fixing end, protect these parts not by external environment and object
Influence.
According to an aspect of the present invention, above-mentioned gas absorption cell also includes being used to fix the fiber optic collimator module protection
The first support of shell and the cavity front end and the second support for fixing the cavity rear end, the first support and
Two supports are connected to a fixed with the two ends of cavity respectively.
Further, gas absorption cell also includes the light inlet for being used to access light source.In one embodiment, it is described enter
Optical port is located in first support.Such as, light inlet is provided with flange, for connecting light source and fiber optic collimator module.
According to an aspect of the present invention, it is provided with light-emitting window (i.e. condenser lens outgoing in the focus module fixing end
Mouthful), the optical axis of condenser lens and the central axis of cavity air chamber, the optical axis coincidence of fiber optic collimator module.Such as, the light-emitting window is set
Put in focus module fixing end.
According to an aspect of the present invention, there is central through hole in the fiber optic collimator module fixing end, in the central through hole
Oblique window is fixed with, for reducing optical standard tool interference.
According to an aspect of the present invention, the focus module fixing end rear portion can further connect photoelectric detection module,
The photoelectric detection module is used to receive the light transmitted from the light-emitting window, and is converted to electric signal.
Present invention also offers application of the above-mentioned gas absorption cell in gas detection.
According to an aspect of the present invention, above-mentioned gas absorption cell can be used for detection Gases Dissolved in Transformer Oil.
In a preferred embodiment, the Gases Dissolved in Transformer Oil is selected from N2、O2、H2、CH4、C2H2、C2H4、
C2H6、CO、CO2One or both of more than.
The cavity body structure of the gas absorption cell of the present invention is simple, and light path is short, and volume is small so that whole absorption pool structure is tight
Gather, air-tightness is good, dismounting easy to install is easy to safeguard；And have the advantages that shock resistance is good, environment is practical.
Brief description of the drawings
Fig. 1 is the structural representation of a gas absorption cell embodiment according to the present invention.
Description of reference numerals：1st, gas absorption cell；2nd, fiber optic collimator module；3rd, focus module；4th, cavity；21st, optical fiber is accurate
Straight device；22nd, accurate light modulation structure；23rd, fiber optic collimator module fixing end；24th, first support；25th, fiber optic collimator module protection shell；
241st, light inlet；31st, condenser lens；32nd, light-emitting window；33rd, focus module fixing end；34th, second support；41st, cavity air chamber；
42nd, air inlet；43rd, sensor；44th, bolt；45th, gas outlet.
Embodiment
Below in conjunction with accompanying drawing, technical scheme is described.Obviously, described embodiment is only this Shen
Please a part of embodiment, rather than whole embodiment；And the structure shown in accompanying drawing be only it is schematical, not
Represent material object.It should be noted that based on these embodiments in the present invention, it is all that those of ordinary skill in the art are obtained
Other embodiment, belongs to the scope of the application protection.
In the present invention, term " gas absorption cell " and " absorption cell " represent identical meaning, can exchange.
Herein, term is " preceding " represents to close along the position of the upstream of beam direction along in the gas absorption cell of the present invention
System, but is not meant to must be directed towards a certain fixed-direction in actual installation practice, just to show between all parts
Position relationship or annexation.Similarly, term " rear ", " on ", " under " etc. do not constitute absolute spatial relationship limitation, simply
A kind of relative concept.This is that those skilled in the art can understand., can be towards sometimes for describing convenient on word
Accompanying drawing direction, is referred to as " left side ", beam direction downstream side by beam direction upstream side and is referred to as " right side ", simply a kind of relative general
Read, this is that those skilled in the art can understand.
Referring to Fig. 1, gas absorption cell 1 of the invention mainly include fiber optic collimator module 2, focus module 3, cavity 4 this three
Individual part.Wherein fiber optic collimator module 2 is used to be incident in the air chamber 41 of cavity 4 after the light of light source is collimated, to supply
Under test gas in air chamber 41 absorbs.Fiber optic collimator module 2 mainly includes optical fiber collimator 21, for adjusting light path so that light
The beam accurate light modulation structure 22 coaxial with the optical axis of following condenser lenses 31, for by accurate light modulation structure 22 and the one end of cavity 4
(i.e. front end) closed fiber optic collimator module fixing end 23 being fixed together.Preferably, fiber optic collimator module 2 also includes optical fiber standard
Straight module protection shell 25, the containment vessel 25 is fixed for covering optical fiber collimator 21, accurate light modulation structure 22, fiber optic collimator module
End 23, protects these parts not influenceed by external environment and object.In a preferred embodiment, it is whole in order to support
Absorption cell 1, the structural stability for keeping absorption cell 1, fiber optic collimator module 2 can also include being used for the front end of fixed cavity 4 and light
The first support 24 of fine collimating module containment vessel 25.Preferably, the accurate light modulation knot of the collimation lens end insertion of optical fiber collimator 21
It is in the central through hole of structure 22 and fixed.In one embodiment, light inlet 241, light inlet can be provided with first support 24
241, which are provided with flange, is used to connect light source.
Fiber optic collimator module fixing end 23, which is provided with central through hole, the central through hole, can be fixed with oblique window, be used for
Reduce optical standard tool interference, it is ensured that gas detection accuracy.
Focus module 3 mainly includes condenser lens 31, for fixed focus lenses 31 and closed solid with the other end of cavity 4
It is scheduled on focus module fixing end 33 together, optical axis and the central axis of cavity air chamber 41, the fiber optic collimator mould of the condenser lens 31
The optical axis coincidence of block 2.In a preferred embodiment, in order to support whole absorption cell 1, keep absorption cell 1 structure it is steady
It is qualitative, the second support 34 of fixation can also be set in the rear end of cavity 4, and first support 24 and second support 34 are solid together
Determine, support whole gas absorption cell.Light-emitting window 32 (i.e. condenser lens exit portal 32) is provided with focus module fixing end 33, is gathered
The optical axis of focus lens 31 and the central axis of cavity air chamber 41, the optical axis coincidence of fiber optic collimator module 2.
The two ends of cavity 4 respectively with fiber optic collimator module fixing end 23 and the airtight connection of focus module fixing end 33, cavity 4
Hollow space be that light beam after air chamber 41 for accommodating under test gas, collimation is transferred to focus module 3, gas by air chamber 41
The side of room 41 is provided with air inlet 42 and gas outlet 45, and is such as provided with connecting hole ratio at top at the suitable position of air chamber wall
Such as screw and/or jack are used for detecting the temperature of air chamber for installing at least one sensor 43, preferably two or more sensor 43
Degree and pressure parameter, so as to for being modified to testing result.It should be understood that the position of air inlet 42 and gas outlet 45 can root
Switched over according to being actually needed.Because air chamber 41 need not install the speculum or speculum group for multiple reflections light, make
Obtain gas absorption cell 1 simple in construction, dismounting easy to install and repeatedly installing/dismounting can't influence accuracy of detection, it is this without reflection
The simple structure of mirror or speculum group enhances the shock resistance and environmental suitability of gas absorption cell 1, while through type, short light path
Air chamber structure design cause absorption cell 1 the volume of air chamber 41 it is small, correspondingly reduce the volume of gas absorption cell 1.Preferably,
Gas absorption cell 1 can reach very high accuracy of detection under the conditions of small volume, short light path, such as the solution gas in transformer oil
Application in physical examination survey, better than minimum detection limit as defined in national grid company standard.This succinct structure also causes gas
The repair and maintenance of absorption cell 1 more facilitates.
In the gas absorption cell 1 of the present invention, keep between fiber optic collimator module 2 and cavity 4, cavity 4 and focus module 3 it
Between be tightly fastened it is most important.Such as, the two ends of cavity 4 can by nested mode respectively with fiber optic collimator module fixing end 23
With focus module fixing end 33 is closed is fixed together.In a preferred embodiment, when the circle that cavity 4 is inner wall smooth
During cylinder, the front end of cavity 4 is provided with screwed hole and toroidal cavity, closely connects with fiber optic collimator module fixing end 23 and first support 24
Connect；The rear end of cavity 4 also is provided with screwed hole and toroidal cavity, is closely connected with focus module fixing end 33 and second support 34.
Meanwhile, the rear and front end of cavity 4 junction can by fluid sealant and/or raw material band, add if necessary bolt 44 respectively with light
Fine collimating module fixing end 23 and/or focus module fixing end 33 are fixed, and this sealing structure can fully ensure air chamber 41
Air-tightness, also causes the repair and maintenance of gas absorption cell 1 more to facilitate.
In a preferred embodiment, above-mentioned accurate light modulation structure 22 can utilize the stability principle of triangle, adopt
Double triangle nested structure is used, the fine adjustment of light path is realized so that optical path adjusting is simple, Stability Analysis of Structures and shock resistance is good.
In one embodiment, helicitic texture and chamber can be respectively equipped with above-mentioned first support 24 and second support 34
The two ends of body 4 form threaded connection, for being fixedly connected with cavity 4.
Preferably, screwed hole can be respectively equipped with first support 24 and second support 34, be screwed company with workbench
Connect, it is ensured that the shock resistance of absorption cell 1.
The above-mentioned rear portion of focus module 3 can further connect photoelectric detection module (not shown), and the photoelectric detection module is used for
Receive the light from the outgoing of light-emitting window 32 and be converted to electric signal.
Above-mentioned gas absorption cell 1 can be applied to detect gas.It such as can be used for detection Gases Dissolved in Transformer Oil.
Gas in Oil of Transformer component and concentration largely reflect the thermoelectricity fault degree of transformer and use the longevity
Life, Gas in Oil of Transformer, which analyzes oneself, turns into the effective technology means that inside transformer Hidden fault is detected.Research and development
Multicomponent gas, online measuring technique in transformer oil have important theory and realistic meaning.Solution gas in transformer oil
Body component mainly has N2、O2、H2、CH4、C2H2、C2H4、C2H6、CO、CO2Deng gas.Under normal circumstances in oil-immersed power transformer
Oil and insulation paper material under heat and the collective effect of electricity, can gradually aging and decomposition, produce a small amount of low molecular hydrocarbon and
CO2, the gas such as CO.If inside transformer occur Superheated steam drier, discharging fault or make moist situation when, the yield of these gases
It can increase sharply.Therefore the operation conditions of transformer can be reflected by monitoring Gas in Oil of Transformer species and content on-line,
Timely and accurately detect power transformer Hidden fault.
It is found through experiments that, gas absorption cell 1 of the invention is used to detect by the laser of infrared light and/or near infrared light
Gases Dissolved in Transformer Oil component such as N2、O2、H2、CH4、C2H2、C2H4、C2H6、CO、CO2During Deng gas, with high inspection
Sensitivity and reliability are surveyed, such as gas absorption cell 1 is marked for the Monitoring lower-cut of above-mentioned gas less than enterprise of State Grid Corporation of China
Lowest detection limit value as defined in accurate, therefore, it is possible to effectively realize on-line checking, reduces the rate of false alarm of transformer fault.
It should be noted that, term " comprising ", "comprising" or its any other variant herein is intended to non-row
His property is included, so that process, method, article or equipment including a series of key elements not only include those key elements, and
And also including other key elements being not expressly set out, or also include for this process, method, article or equipment institute inherently
Key element.
Above example is only to the technical scheme for illustrating patent of the present invention, rather than its limitations；Although with reference to foregoing reality
Example is applied patent of the present invention is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and model of each embodiment technical scheme of patent of the present invention
Enclose.
Claims (10)
1. a kind of gas absorption cell detected for gas, including：For the fiber optic collimator module for being collimated the light of light source,
For being focused and making the focus module of focusing light outgoing after collimation by the light of cavity air chamber, positioned at fiber optic collimator mould
Cavity between block and focus module, for introducing and discharging under test gas, wherein,
The fiber optic collimator module includes optical fiber collimator, the accurate light modulation structure for adjusting light path, for precision to be dimmed
Structure and the closed fiber optic collimator module fixing end being fixed together in cavity one end, wherein the collimation lens end of optical fiber collimator are inserted
Enter in the central through hole of accurate light modulation structure and fixed；
Include condenser lens in the focus module, for fixed focus lenses and with the cavity other end is closed is fixed together
Focus module fixing end, the optical axis of the condenser lens and the central axis of cavity air chamber, the optical axis coincidence of fiber optic collimator module；
The two ends of the cavity respectively with fiber optic collimator module fixing end and focus module fixing end airtight connection, cavity it is hollow
Part is that the light beam after air chamber for accommodating under test gas, collimation is transferred to focus module by air chamber, its side be provided with into
Gas port and gas outlet, and be used at least one sensor be installed to detect the temperature and pressure ginseng of air chamber provided with connecting hole
Number.
2. gas absorption cell as claimed in claim 1 or 2, it is characterised in that it is accurate that the fiber optic collimator module also includes optical fiber
Straight module protection shell, for covering optical fiber collimator, accurate light modulation structure, fiber optic collimator module fixing end, protects these parts
Do not influenceed by external environment and object.
3. gas absorption cell as claimed in claim 2, it is characterised in that also including being protected for fixing the fiber optic collimator module
The first support of protective case and the cavity front end and the second support for fixing the cavity rear end, the first support and
Second support is fixed together, support whole gas absorption cell.
4. gas absorption cell as claimed in claim 1 or 2, it is characterised in that also including the light inlet for accessing light source.
5. gas absorption cell as claimed in claim 3, it is characterised in that the light inlet is located in first support.
6. gas absorption cell as claimed in claim 1 or 2, it is characterised in that be provided with out in the focus module fixing end
The exit portal of optical port, i.e. condenser lens, the optical axis of condenser lens and the central axis of cavity air chamber, the optical axis of fiber optic collimator module
Overlap.
7. gas absorption cell as claimed in claim 1 or 2, it is characterised in that in having in the fiber optic collimator module fixing end
Oblique window is fixed with heart through hole, the central through hole, for reducing optical standard tool interference.
8. gas absorption cell as claimed in claim 6, it is characterised in that the focus module fixing end further connects photoelectricity
Detecting module, the photoelectric detection module is used for the light received from the light-emitting window outgoing and is converted to electric signal.
9. the gas absorption cell as any one of claim 1 to 8 is used for answering for the detection of Gases Dissolved in Transformer Oil
With.
10. application as claimed in claim 9, it is characterised in that the gas is selected from N2、O2、H2、CH4、C2H2、C2H4、C2H6、
CO、CO2One or both of more than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710580841.8A CN107167428B (en) | 2017-07-17 | 2017-07-17 | Absorption tank for gas detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710580841.8A CN107167428B (en) | 2017-07-17 | 2017-07-17 | Absorption tank for gas detection |
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| CN107167428B CN107167428B (en) | 2023-04-25 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107941724A (en) * | 2017-12-21 | 2018-04-20 | 苏州汉策能源设备有限公司 | A kind of single style gas pond of durable type light path |
| CN107976403A (en) * | 2017-11-13 | 2018-05-01 | 清华大学 | SO in a kind of real time on-line monitoring flue gas3The device and method of gas concentration |
| CN108169150A (en) * | 2017-12-06 | 2018-06-15 | 中国电子科技集团公司第八研究所 | A kind of lossless on-Line Monitor Device of solid rocket propellant volatilization gas optical fiber |
| CN109211786A (en) * | 2018-08-31 | 2019-01-15 | 中煤科工集团重庆研究院有限公司 | Correlation type spectrum gas absorption cell |
| CN109724928A (en) * | 2018-12-26 | 2019-05-07 | 中煤科工集团重庆研究院有限公司 | Self-calibrating reference gas cell |
| CN113203698A (en) * | 2021-06-16 | 2021-08-03 | 南京羣科来信息技术有限公司 | Laser gas analyzer for measuring n gas concentrations and operation method thereof |
| CN113218865A (en) * | 2021-05-06 | 2021-08-06 | 苏州卡美利多仪器有限公司 | Digestion reaction system for total organic carbon analyzer |
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