CN108760667A - A kind of multi-channel assembled infrared gas detection device of single light source - Google Patents
A kind of multi-channel assembled infrared gas detection device of single light source Download PDFInfo
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- CN108760667A CN108760667A CN201810774976.2A CN201810774976A CN108760667A CN 108760667 A CN108760667 A CN 108760667A CN 201810774976 A CN201810774976 A CN 201810774976A CN 108760667 A CN108760667 A CN 108760667A
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- 238000001514 detection method Methods 0.000 title claims abstract description 40
- 238000010521 absorption reaction Methods 0.000 claims abstract description 42
- 238000012360 testing method Methods 0.000 claims description 20
- 230000003287 optical effect Effects 0.000 claims description 8
- 238000005538 encapsulation Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000004587 chromatography analysis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004611 spectroscopical analysis Methods 0.000 description 2
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000505 pernicious effect Effects 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
- G01N21/35—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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- 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
- G01N21/03—Cuvette constructions
- G01N21/031—Multipass arrangements
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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
- G01N2021/3129—Determining multicomponents by multiwavelength light
- G01N2021/3133—Determining multicomponents by multiwavelength light with selection of wavelengths before the sample
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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
- G01N21/314—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry with comparison of measurements at specific and non-specific wavelengths
- G01N2021/317—Special constructive features
- G01N2021/3174—Filter wheel
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2201/00—Features of devices classified in G01N21/00
- G01N2201/06—Illumination; Optics
- G01N2201/066—Modifiable path; multiple paths in one sample
- G01N2201/0668—Multiple paths; optimisable path length
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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 kind of multi-channel assembled infrared gas detection devices of single light source, including infrared light supply, chopper, long light path gas absorption cell, infrared detector, the first corner reflector, the second corner reflector, big concave mirror, the first small concave mirror and the second small concave mirror；Infrared light supply is located at the lower section of chopper, and chopper is located at the lower section on the right side of long light path gas absorption cell, and the light for sending out infrared light supply is modulated；First corner reflector and the second corner reflector are for the light source after reflection modulation；First small concave mirror, the second small concave mirror and big concave mirror are positioned opposite, are used for the modulated light source of multiple reflections；Infrared detector is for receiving the light source reflected and being detected.The present invention realizes a greater variety of gas detections in the case of original single light source, gas cell and single detection gas, by a pair of of modulation wheel, and the gaseous species of detection are more, and the precision of detection is high, at low cost.
Description
Technical field
The invention belongs to oil explorations and environmental monitoring technology field, are related to gas-detecting device, and in particular to a kind of
The multi-channel assembled infrared gas detection device of single light source.
Background technology
During oil exploration, it is often necessary to the pernicious gas and flammable explosive gas of situ of drilling well are monitored,
Prevent dangerous and unexpected generation.Current relatively conventional gas detection method includes mainly：Gas sensor method, infrared absorption light
Spectrometry, chromatography, photocaustic spectroscopy etc..There are different problems in each method：The precision of gas sensor method detection is relatively low, and
Cross jamming is also easy to produce to mixed gas；The gas sample amount that infrared absorption spectroscopy needs is big, and precision is low；Chromatography needs to carry
Gas increases maintenance, is less applicable in for monitoring on-line.
In order to overcome the problems, such as these, people start to be detected using gas cell.Existing gas cell detection technique is main
It is that a kind of gas needs a gas cell and detector, multigroup part of the gas in scene is then needed additionally to increase gas cell and inspection
Survey device；Existing combined gas detection can realize multigroup part of gas detection, but only there are one modulation wheel, the gas of detection
Body type is restricted.
Invention content
For the above-mentioned problems in the prior art, the present invention provides a kind of multi-channel assembled infrared gas of single light source
Body detection device is realized in the case of original single light source, gas cell and single detection gas by a pair of of modulation wheel
The gaseous species of a greater variety of gas detections, detection are more, and the precision of detection is high, at low cost.
For this purpose, present invention employs following technical schemes：
A kind of multi-channel assembled infrared gas detection device of single light source, including infrared light supply, chopper, long light path gas
Absorption cell, infrared detector, the first corner reflector, the second corner reflector, big concave mirror, the first small concave mirror and
Two small concave mirrors；The long light path gas absorption cell is cuboid-type container, and inside is empty, and the size of length direction is remote
Much larger than the size in other two direction, for storing under test gas；The infrared light supply is located at the lower section of chopper, described to cut
Wave device is located at the lower section on the right side of long light path gas absorption cell, and the light for sending out infrared light supply is modulated；Described first jiao
Speculum is located at the top of the inside face infrared light supply of long light path gas absorption cell, for the light source after reflection modulation；It is described
First small concave mirror and the second small concave mirror are arranged in the left side of long light path gas absorption cell up and down side by side, described big
Concave mirror is located at the right side of long light path gas absorption cell, opposite with two small concave mirrors, is modulated for multiple reflections
Light source afterwards；Second corner reflector is located at the top of the first corner reflector of right side face of long light path gas absorption cell, uses
In light source is reflected long light path gas absorption cell；The infrared detector is located at the external face of long light path gas absorption cell
The top of two corner reflectors, for receiving the light source reflected and being detected.
Further, further include the first modulation wheel and the second modulation wheel, the two interlaced arrangement is in infrared detector and long light
Between journey gas absorption cell, for detecting under test gas.
Further, it is mounted with multiple small gas cells successively on first modulation wheel and the second modulation wheel, it is each stingy
Body pond corresponds to the absorbing wavelength of different gas by different optical filters；An encapsulation N is designed on each modulation wheel2Gas
The optical filter wavelength of body pond and a reference cell, the reference cell makes the under test gas on the modulation wheel all not have on the wavelength
There is absorption.
Further, first modulation wheel is equipped with the first photoswitch, positioning and gas for controlling the first modulation wheel
Physical examination is surveyed；Second modulation wheel is equipped with the second photoswitch, positioning and gas detection for controlling the second modulation wheel.
Further, first modulation wheel is equipped with third motor, for driving the first modulation wheel；Second modulation
Wheel is equipped with the second motor, for driving the second modulation wheel.
Preferably, further include air admission hole and venthole；The air admission hole is located at the upper left orientation of long light path gas absorption cell
It sets, enters under test gas；The venthole is located at the lower right position of long light path gas absorption cell, defeated under test gas
Go out.
Preferably, the chopper is equipped with first motor, for driving chopper to work.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) double modulation wheel construction is used to realize a greater variety of gas detections.
(2) gaseous species detected are more, and the precision of detection is high, at low cost.
(3) meet the application demand of Site Detection, detector it is with better function, be suitable for on-line monitoring.
Description of the drawings
Fig. 1 is that a kind of structure composition of the multi-channel assembled infrared gas detection device of single light source provided by the present invention is shown
It is intended to.
Reference sign：1, infrared light supply；2, first motor；3, chopper；4, the first corner reflector；5, first is small recessed
Face speculum；6, big concave mirror；7, the second small concave mirror；8, long light path gas absorption cell；9, the second corner reflector；
10, the first modulation wheel；11, the second modulation wheel；12, infrared detector；13, the first photoswitch；14, the second photoswitch；15, second
Motor；16, third motor；17, air admission hole；18, venthole.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment come the present invention will be described in detail, specific embodiment therein and explanation only
For explaining the present invention, but it is not as a limitation of the invention.
As shown in Figure 1, the invention discloses a kind of multi-channel assembled infrared gas detection device of single light source, including it is infrared
It is light source 1, chopper 3, long light path gas absorption cell 8, infrared detector 12, the first corner reflector 4, the second corner reflector 9, big recessed
Face speculum 6, the first small concave mirror 5 and the second small concave mirror 7；The long light path gas absorption cell 8 is cuboid
Type container, inside are empty, and the size of length direction is far longer than the size in other two direction, for storing under test gas；
The infrared light supply 1 is located at the lower section of chopper 3, and the chopper 3 is located at the lower section on 8 right side of long light path gas absorption cell, uses
It is modulated in the light for sending out infrared light supply 1；First corner reflector 4 is being located at the inside of long light path gas absorption cell 8 just
To the top of infrared light supply 1, for the light source after reflection modulation；The first small concave mirror, 5 and second small concave reflection
Mirror 7 is arranged in the left side of long light path gas absorption cell 8 up and down side by side, and the big concave mirror 6 is located at the absorption of long light path gas
The right side in pond 8, it is opposite with two small concave mirrors, it is used for the modulated light source of multiple reflections；Second corner reflector 9
In the top of the first corner reflector of right side face 4 of long light path gas absorption cell 8, inhaled for light source to be reflected long light path gas
Receives pond 8；The infrared detector 12 is located at the top of the second corner reflector of external face 9 of long light path gas absorption cell 8, is used for
It receives the light source reflected and is detected.
Specifically, further include the first modulation wheel 10 and the second modulation wheel 11, the two interlaced arrangement is in 12 He of infrared detector
Between long light path gas absorption cell 8, for detecting under test gas.
Specifically, it is mounted with multiple small gas cells, Mei Ge little successively on first modulation wheel, 10 and second modulation wheel 11
Gas cell corresponds to the absorbing wavelength of different gas by different optical filters；An encapsulation N is designed on each modulation wheel2's
Gas cell and a reference cell, the optical filter wavelength of the reference cell make the under test gas on the modulation wheel on the wavelength all
Do not absorb.
Specifically, first modulation wheel 10 is equipped with the first photoswitch 13, the positioning for controlling the first modulation wheel 10
And gas detection；Second modulation wheel 11 is equipped with the second photoswitch 14, positioning and gas for controlling the second modulation wheel 11
Physical examination is surveyed.
Specifically, first modulation wheel 10 is equipped with third motor 16, for driving the first modulation wheel 10；Described second
Modulation wheel 11 is equipped with the second motor 15, for driving the second modulation wheel 11.
Specifically, further include air admission hole 17 and venthole 18；The air admission hole 17 is located at a left side for long light path gas absorption cell 8
Top position enters under test gas；The venthole 18 is located at the lower right position of long light path gas absorption cell 8, is used for
Under test gas exports.
Specifically, the chopper 3 is equipped with first motor 2, for driving chopper 3 to work.
Embodiment
A kind of operation principle of the multi-channel assembled infrared gas detection device of single light source provided by the present invention is as follows：
The light that infrared light supply 1 is sent out generates modulated signal by chopper 3 and enters long light path gas absorption cell 8, and light passes through
First corner reflector 4 is reflected into the first small concave mirror 5, and the first small concave mirror 5 is re-reflected into after being converged to light
Big concave mirror 6, after multiple reflections, big concave mirror 6 reflects light to the second small concave mirror 7 again, the
Light is converged back reflection to the second corner reflector 9 by two small concave mirrors 7, and light reflection is gone out long light path by the second corner reflector 9
Gas absorption cell 8；It is mounted with many small gas cells successively on first modulation wheel 10, the second modulation wheel 11, each small gas cell
The absorbing wavelength of different gas is corresponded to by different optical filters, meanwhile, there are one encapsulate N on each modulation wheel2Gas
The optical filter wavelength of body pond and a reference cell, reference cell makes the under test gas on the modulation wheel all not inhaled on the wavelength
It receives；When light is after long light path gas absorption cell 8 reflects, the N of the first modulation wheel 102Gas cell passes through the first photoswitch 13
Light is navigated to from N2Gas cell passes through, and then rotates the second modulation wheel 11 successively, is detected successively by the positioning of the second photoswitch 14
The measuring signal and reference signal of under test gas on second modulation wheel 11, to complete the under test gas on the second modulation wheel 11
Detection；After completing the under test gas detection on the second modulation wheel 11, light is positioned from the second modulation by the second photoswitch 14
The N of wheel 112Gas cell passes through, and then detects the under test gas on the first modulation wheel 10 successively by the positioning of the first photoswitch 13
Measuring signal and reference signal, to complete the detection of the under test gas on the first modulation wheel 10；It is all to be measured to realize
The detection of gas.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to restrict the invention, all essences in the present invention
Any modification, equivalent replacement and improvement etc., should be included in protection scope of the present invention made by within refreshing and spirit
Within.
Claims (7)
1. a kind of multi-channel assembled infrared gas detection device of single light source, including infrared light supply (1), chopper (3), long light path
Gas absorption cell (8), infrared detector (12), the first corner reflector (4), the second corner reflector (9), big concave mirror (6),
First small concave mirror (5) and the second small concave mirror (7), it is characterised in that：The long light path gas absorption cell (8) is
Cuboid-type container, inside are empty, and the size of length direction is far longer than the size in other two direction, to be measured for storing
Gas；The infrared light supply (1) is located at the lower section of chopper (3), and the chopper (3) is located at long light path gas absorption cell (8)
The lower section on right side, for the light that infrared light supply (1) is sent out to be modulated；First corner reflector (4) is located at long light path gas
The top of the inside face infrared light supply (1) of body absorption cell (8), for the light source after reflection modulation；The first small concave surface is anti-
The left side that mirror (5) and the second small concave mirror (7) are arranged in long light path gas absorption cell (8) up and down side by side is penetrated, it is described big recessed
Face speculum (6) is located at the right side of long light path gas absorption cell (8), opposite with two small concave mirrors, is used for multiple reflections
Modulated light source；Second corner reflector (9) is located at the first corner reflector of right side face of long light path gas absorption cell (8)
(4) top, for light source to be reflected long light path gas absorption cell (8)；The infrared detector (12) is located at long light path gas
The top of the second corner reflector of external face (9) of body absorption cell (8), for receiving the light source reflected and being detected.
2. the multi-channel assembled infrared gas detection device of a kind of single light source according to claim 1, it is characterised in that：Also
Including the first modulation wheel (10) and the second modulation wheel (11), the two interlaced arrangement is inhaled in infrared detector (12) and long light path gas
Between receives pond (8), for detecting under test gas.
3. the multi-channel assembled infrared gas detection device of a kind of single light source according to claim 2, it is characterised in that：Institute
It states and is mounted with multiple small gas cells successively on the first modulation wheel (10) and the second modulation wheel (11), each small gas cell passes through difference
Optical filter correspond to the absorbing wavelength of different gas；An encapsulation N is designed on each modulation wheel2Gas cell and one
The optical filter wavelength of reference cell, the reference cell makes the under test gas on the modulation wheel all not absorbed on the wavelength.
4. the multi-channel assembled infrared gas detection device of a kind of single light source according to claim 3, it is characterised in that：Institute
It states the first modulation wheel (10) and is equipped with the first photoswitch (13), positioning and gas detection for controlling the first modulation wheel (10)；
Second modulation wheel (11) is equipped with the second photoswitch (14), the positioning for controlling the second modulation wheel (11) and gas inspection
It surveys.
5. the multi-channel assembled infrared gas detection device of a kind of single light source according to claim 4, it is characterised in that：Institute
It states the first modulation wheel (10) and is equipped with third motor (16), for driving the first modulation wheel (10)；Second modulation wheel (11)
It is equipped with the second motor (15), for driving the second modulation wheel (11).
6. the multi-channel assembled infrared gas detection device of a kind of single light source according to any one of claim 1 to 5,
It is characterized in that：Further include air admission hole (17) and venthole (18)；The air admission hole (17) is located at long light path gas absorption cell (8)
Upper left side position enters under test gas；The venthole (18) is located at the bottom right orientation of long light path gas absorption cell (8)
It sets, is exported under test gas.
7. the multi-channel assembled infrared gas detection device of a kind of single light source according to claim 6, it is characterised in that：Institute
It states chopper (3) and is equipped with first motor (2), for driving chopper (3) to work.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810774976.2A CN108760667A (en) | 2018-07-16 | 2018-07-16 | A kind of multi-channel assembled infrared gas detection device of single light source |
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| CN201810774976.2A CN108760667A (en) | 2018-07-16 | 2018-07-16 | A kind of multi-channel assembled infrared gas detection device of single light source |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696413A (en) * | 2018-12-20 | 2019-04-30 | 南京信息工程大学 | Sample gas chamber, the infrared gas sensor based on QPSO algorithm and atmospheric pressure compensating method |
| CN109696412A (en) * | 2018-12-20 | 2019-04-30 | 南京信息工程大学 | Infrared gas sensor and pressure compensation method based on AGNES optimized BP neural network |
| CN109946233A (en) * | 2019-04-17 | 2019-06-28 | 湖南五凌电力科技有限公司 | An oil-resistant sealed laser electronic nose combined detection air chamber |
| CN115436291A (en) * | 2022-09-13 | 2022-12-06 | 尉士民 | An optical path modulation absorption cell |
| CN119880808A (en) * | 2025-03-26 | 2025-04-25 | 武汉敢为科技有限公司 | Compact free space light multi-reflection pool |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696413A (en) * | 2018-12-20 | 2019-04-30 | 南京信息工程大学 | Sample gas chamber, the infrared gas sensor based on QPSO algorithm and atmospheric pressure compensating method |
| CN109696412A (en) * | 2018-12-20 | 2019-04-30 | 南京信息工程大学 | Infrared gas sensor and pressure compensation method based on AGNES optimized BP neural network |
| CN109946233A (en) * | 2019-04-17 | 2019-06-28 | 湖南五凌电力科技有限公司 | An oil-resistant sealed laser electronic nose combined detection air chamber |
| CN115436291A (en) * | 2022-09-13 | 2022-12-06 | 尉士民 | An optical path modulation absorption cell |
| CN119880808A (en) * | 2025-03-26 | 2025-04-25 | 武汉敢为科技有限公司 | Compact free space light multi-reflection pool |
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Inventor after: Zhang Junlong Inventor after: Chen Zhiwei Inventor after: Liang Baoan Inventor after: Sun Haigang Inventor after: Li Zhongyu Inventor after: Wu Xuewei Inventor after: He Gang Inventor after: Zheng Changjun Inventor before: Zhang Junlong Inventor before: Chen Zhiwei Inventor before: Mao Xuebin Inventor before: Liang Baoan Inventor before: Sun Haigang Inventor before: Li Zhongyu Inventor before: Wu Xuewei Inventor before: He Gang Inventor before: Zheng Changjun |
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Application publication date: 20181106 |