CN111829974A - Rotary type air chamber infrared gas detection device - Google Patents
Rotary type air chamber infrared gas detection device Download PDFInfo
- Publication number
- CN111829974A CN111829974A CN202010540740.XA CN202010540740A CN111829974A CN 111829974 A CN111829974 A CN 111829974A CN 202010540740 A CN202010540740 A CN 202010540740A CN 111829974 A CN111829974 A CN 111829974A
- Authority
- CN
- China
- Prior art keywords
- optical filter
- infrared
- gas
- air chamber
- switching layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 64
- 230000003287 optical effect Effects 0.000 claims abstract description 121
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 4
- 239000010931 gold Substances 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 99
- 238000000034 method Methods 0.000 abstract description 9
- 239000005431 greenhouse gas Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
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
- G01N21/35—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
-
- 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
- G01N21/0303—Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment
-
- 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
-
- 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
- G01N21/0303—Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment
- G01N2021/0307—Insert part in cell
-
- 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
- G01N2021/036—Cuvette constructions transformable, modifiable
-
- 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
- G01N2021/0389—Windows
-
- 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
- G01N2021/3509—Correlation method, e.g. one beam alternating in correlator/sample field
Abstract
The invention relates to an infrared gas detection device of a rotary gas chamber, which comprises: the infrared detector comprises an air chamber, an optical filter switching layer, an infrared detector, a detector base, an infrared light source and a light source base. The gas chamber comprises a cylindrical shell and an internal gas detection area, and two gas holes are formed in the side face of an external cylindrical structure; the optical filter switching layer is of a circular structure with the diameter same as that of the air chamber and is used for fixing optical filters with different wavelengths; the infrared detector is provided with two infrared detectors and is fixed with the infrared air chamber through a detector base; the infrared light source is fixed on the light source base and is fixed with the air chamber through the binding site. Compared with the existing method for detecting the single gas, the method for detecting the multiple gases realizes the detection of the multiple gases by rotating the optical filter switching layer fixed on the gas chamber. When detecting multiple type of gas, only need dismouting light filter to switch the light filter on the layer, need not to change infrared detector, can realize easy dismounting.
Description
Technical Field
The invention belongs to the technical field of greenhouse gas detection, relates to an infrared gas detection device, and particularly relates to a rotary type gas chamber infrared gas detection device.
Background
The emission of greenhouse gases is attracting increasing attention of society, and the air pollution caused by the greenhouse gases is also getting serious. Therefore, it is particularly important to study a greenhouse gas detection device. Currently, a non-dispersive infrared technology (NDIR) is generally adopted in a portable infrared detection device. The principle of the technology is that the detection of the gas concentration is completed by comparing the change of the light energy intensity of specific wavelength with a preset reference channel signal based on the characteristic that different gases absorb different light energy of different wave bands of infrared light. The method has the advantages of good selectivity, good stability, high precision, low cost and good anti-interference performance.
The traditional non-dispersive infrared detection device mainly uses a dual-channel or multi-channel infrared detector to detect the concentration of various gases. This requires the integration of two or more infrared detection units on the infrared detector, the more gas detected, the more detection units required, the higher the cost, and the necessity of detecting a variety of other gases by directly replacing the corresponding infrared probe.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a rotary type gas chamber infrared gas detection device, which is characterized in that under the condition that the original detection gas type is limited by the number of infrared detection units and the detection is not comprehensive enough, a light filter switching layer is added in a gas chamber, and when different gases are detected, the light filter with the corresponding wavelength is rotated to the corresponding position, so that the detection of various gases is completed. When the wavelength corresponding to the detected gas is that the switching layer does not have a filter, the detection can be completed by removing and replacing the filter on the switching layer. The method has the advantages of multiple detection gas types, low cost, convenient assembly and disassembly and high detection precision.
Therefore, the invention adopts the following technical scheme: a rotary type air chamber infrared gas detection device comprises an air chamber (20), an optical filter switching layer (4), an infrared detector (15), a detector base (5), an infrared light source (2) and a light source base (3), wherein the outside of the air chamber (20) is of a cylindrical structure, the inside of the air chamber is a cylindrical air cavity (1) which is used as an infrared air chamber, and an air hole is formed in the side surface of the cylindrical structure; one end of the air chamber (20) is provided with an optical filter switching layer (4), and hollow windows are arranged at positions of every 90 degrees on the optical filter switching layer (4) and at the center of the optical filter switching layer (4) and used for fixing optical filters with different wavelengths; the front end of the optical filter switching layer (4) is provided with an infrared detector, the infrared detector (15) is provided with an infrared detector reference signal channel window (9) and an infrared detector gas signal channel window to be detected (10), the windows are made of glass materials without optical filtering function and are fixed with the optical filter switching layer (4) through a detector base (5); the other end of the air chamber (20) is provided with an infrared light source (2), and the infrared light source (2) is fixed on the light source base (3).
Further, the air chamber (20) is subjected to gold plating treatment, and the first air hole (13) and the second air hole (14) on the side surface of the external cylindrical structure of the air chamber (20) penetrate into the internal cylindrical air cavity (1).
Further, the optical filter switching layer (4) is of a circular structure with the diameter the same as that of the air chamber, and is fixed on a combination surface (16) of the air chamber and the optical filter switching layer, hollow windows are arranged at positions of every 90 degrees and are used for fixing the first optical filter (6), the third optical filter (8), the fourth optical filter (11) and the fifth optical filter (12), the second optical filter (7) is arranged at the center of the optical filter switching layer (4) and serves as a reference window wavelength optical filter, an optical filter window rotating right above the window is a gas window to be detected, and corresponding gas to be detected is detected through rotation selection.
Furthermore, the diameter of the cylindrical air cavity (1) is the distance between two optical filters on the longitudinal axis of the optical filter switching layer (4), and two complete optical filter windows appear on one side (18) of the cylindrical air cavity combined with the optical filter switching layer in each rotation.
Furthermore, an infrared detector reference signal channel window (9) and an infrared detector gas signal channel window (10) in the infrared detector (15) to be detected are respectively superposed with the central optical filter and the longitudinal axis vertex optical filter of the optical filter switching layer (4).
Furthermore, the position of the infrared light source (2) is in the central position of one side (19) where the cylindrical air cavity is combined with the light source base, the wavelength emitted by the infrared light source (2) comprises the wavelengths of the first optical filter (6), the second optical filter (7), the third optical filter (8), the fourth optical filter (11) and the fifth optical filter (12), and the light source base is of a circular structure with the same diameter as the air cavity.
Furthermore, the infrared detector (15) is a dual-channel thermopile infrared detector or a dual-channel pyroelectric infrared detector, and the detector base (5) is of a circular structure with the diameter being the same as that of the air chamber.
According to the invention, through the design of the infrared air chamber structure and related components, the structure of the switching layer added with the optical filter is adopted, so that more choices are provided for infrared gas detection. When the gas detection device is used for detection, firstly, the optical filter switching layer is rotated corresponding to gas to be detected, the corresponding optical filter is rotated to the vertex position of the optical filter switching layer, two windows of the infrared detector are overlapped with the positions of a selected gas window to be detected and a reference window at the center of the switching layer, if the characteristic absorption wavelength optical filter switching layer of the detected gas is not arranged, the switching layer can be detached, the corresponding optical filter is replaced, and the optical filter is installed back to finish detection.
Compared with the prior art, the invention has the beneficial effects that:
(1) compared with the traditional multi-window infrared detector, the method is more flexible in application when detecting various gases, the infrared detector does not need to be disassembled and assembled, and detection can be completed only by rotating the light filter switching layer or replacing the corresponding filter on the switching layer.
(2) Compared with the traditional multi-component gas detection, the multi-window infrared detector is lower in cost.
(3) The NDIR method is adopted for detection, so that the detected infrared signal is more stable than a single-window infrared detection device, and the detection precision is improved.
Drawings
FIG. 1 is a schematic view of a rotary gas chamber infrared gas detection device provided by the present invention.
FIG. 2 is a schematic diagram showing the components of a rotary gas chamber infrared gas detection device provided by the present invention.
FIG. 3 is a schematic cross-sectional view of a gas chamber of a rotary gas chamber infrared gas detection device provided by the present invention.
Description of reference numerals: 1. a cylindrical air cavity; 2. an infrared light source; 3. a light source base; 4. a filter switching layer; 5. a detector base; 6. a first infrared filter; 7. a second infrared filter; 8. a third infrared filter; 9. an infrared detector reference signal channel window; 10. a gas signal channel window to be detected of the infrared detector; 11. a fourth infrared filter; 12. a fifth infrared filter; 13. a first air hole; 14. a second air hole; 15. an infrared detector; 16. the air chamber and the optical filter switching layer are combined; 17. the combination surface of the air chamber and the smooth round base; 18. one side of the cylindrical air cavity combined with the optical filter switching layer; 19. one side of the cylindrical air cavity combined with the light source base; 20. an air chamber.
Detailed Description
A rotary gas chamber infrared gas detection device, the infrared gas detection device comprises: the infrared detector comprises an air chamber, an optical filter switching layer, an infrared detector, a detector base, an infrared light source and a light source base.
The air chamber container is of a cylindrical hollow structure inside and serves as an infrared air chamber, gold plating treatment is carried out on the surface of the air chamber container, and the air chamber container is used for storing air and carrying out infrared gas detection.
The infrared light source is fixed on one side of the air chamber through the light round base and is positioned in the center of the hollow cylinder inside. The optical filter switching layer is of a circular structure with the diameter the same as that of the air chamber and is fixed on the other side of the air chamber, hollow windows are arranged at positions at intervals of 90 degrees and are used for fixing the optical filter, the optical filter at the center of the optical filter switching layer is invariable all the time when the optical filter switching layer is rotated and is used as a reference window wavelength optical filter, the optical filter window rotating right above the window is a gas window to be detected, and corresponding gas to be detected is detected through rotation selection.
The diameter of the cylindrical air cavity in the air chamber is just equal to the distance between the two optical filters on the longitudinal axis of the optical filter switching layer, and two complete optical filter windows appear on the left hole of the cylindrical air cavity in each rotation.
The infrared detector is a double-channel pyroelectric or thermopile detector, and the detector window is made of a glass sheet without a light filtering function. The infrared detector reference signal channel window and the infrared detector gas signal channel window in the infrared detector are respectively superposed with the central optical filter of the optical filter switching layer and the vertex optical filter of the longitudinal axis.
According to the invention, through the design of the infrared air chamber structure and related components, the structure of the switching layer added with the optical filter is adopted, so that more choices are provided for infrared gas detection. When the gas detection device is used for detection, firstly, the optical filter switching layer is rotated corresponding to gas to be detected, the corresponding optical filter is rotated to the vertex position of the switching layer, two windows of the infrared detector are overlapped with the selected gas window to be detected and the reference window at the center of the switching layer, if the characteristic absorption wavelength optical filter of the detected gas is not arranged on the switching layer, the switching layer can be detached, the corresponding optical filter is replaced, and the optical filter is installed back to finish detection.
In order to make the technical solution of the present invention more obvious, the present invention is further described in detail with reference to the accompanying drawings. The detailed description and the description are only intended to illustrate the present invention, but not to limit the present invention.
As shown in fig. 1-2, a rotary gas chamber infrared gas detection device, said infrared gas detection device comprising: the device comprises an air chamber (20), an optical filter switching layer (4), an infrared detector (15), a detector base (5), an infrared light source (2) and a light source base (3). The gas chamber (20) is of a cylindrical structure, and a cylindrical hole is arranged in the middle of the gas chamber and is used as a gas chamber (1) for storing gas for infrared detection; the optical filter is fixed on the optical filter switching layer (4) and is used for enabling infrared light with specific wavelength to be absorbed by the infrared detector; the optical filter switching layer (4) is of a circular structure with the diameter the same as that of the air chamber, is fixed on one side of the air chamber (20) and is used for fixing the optical filter and completing switching of the infrared optical filter through rotation; the infrared detector (15) is fixed with the optical filter switching layer (4) through the detector base (5) and is used for detecting infrared light energy emitted by the light source and converting an optical signal into an electric signal; the infrared light source (2) is fixed with the air chamber (20) through the light source base (3) and is used for emitting infrared light containing the light intensity of gas to be detected, the infrared light is absorbed by the infrared detector and converted into an electric signal, and concentration detection is completed.
Preferably, the outer side of the air chamber (20) is provided with a first air hole (13) and a second air hole (14) which are used for introducing the gas to be measured into the cylindrical air chamber (1) or exhausting the original gas in the cylindrical air chamber (1) and introducing new gas.
Preferably, the gas chamber (20) is plated with gold to make the interior of the cylindrical gas chamber (1) smooth, so that the scattered infrared light finally reaches the plane of the detector to increase the optical path distance.
Preferably, the infrared light source (2) is fixed at the central position of one side of the cylindrical air cavity (1) through a light source base (3).
Preferably, the infrared light source (2) and the infrared detector (15) are distributed on different sides of the gas chamber (20).
Preferably, the optical filter switching layer (4) is a circular structure with the diameter same as that of the air chamber, is fixed on the other side of the air chamber and can rotate around the center of the circle. And hollow windows are arranged at every 90-degree position of the switching disc and used for fixing the optical filter, wherein the optical filter at the center of the optical filter switching layer is always unchanged when the optical filter switching layer is rotated and is used as a reference window wavelength optical filter, the optical filter window rotating right above the window is a gas window to be detected, and the corresponding gas to be detected is detected through rotation selection.
Preferably, when the optical filter switching layer (4) is used, the optical filters at the top end and the center of the longitudinal axis need to be aligned with the infrared detector reference signal channel window (9) of the dual-channel detector (15) and the gas signal channel window (10) to be detected of the infrared detector.
The working principle of the rotary type gas chamber infrared gas detection device provided by the invention is as follows:
according to the invention, through the design of the infrared gas chamber structure and related components, the optical filter switching layer structure (4) is added, so that more choices are provided for infrared gas detection. When detection is carried out, firstly, the optical filter switching layer (4) is rotated corresponding to gas to be detected, the corresponding optical filter is rotated to the vertex position of the optical filter switching layer, so that an infrared detector reference signal channel window (9) of an infrared detector (15) and an infrared detector gas signal channel window (10) to be detected coincide with the positions of a selected gas window to be detected and a reference window at the center of the switching layer, an infrared light source (2) emits light signals from the right side of the air chamber (20), the gas to be detected enters the air chamber through a first air hole (13) and a second air hole (14) on the outer wall of the air chamber, infrared light with corresponding wavelengths is absorbed, the absorbed infrared light is reflected by the inner wall of the gold-plated air chamber, and finally the absorbed infrared light is absorbed by the infrared detector (15) through the optical filter on the optical filter switching layer (4), light energy is converted into, and comparing the electric signal of the gas channel to be detected with the electric signal of the reference signal, eliminating environmental factors by adopting an NDIR method, and calculating the concentration of the gas.
In summary, the present invention provides an infrared gas detection device with a rotary gas chamber, the infrared gas detection device comprising: the infrared detector comprises an air chamber, an optical filter switching layer, an infrared detector, a detector base, an infrared light source and a light source base. The gas chamber comprises a cylindrical shell and an internal gas detection area, and two gas holes are formed in the side face of an external cylindrical structure; the optical filter switching layer is of a circular structure with the diameter same as that of the air chamber and is used for fixing optical filters with different wavelengths; the infrared detector is provided with two infrared detectors and is fixed with the infrared air chamber through a detector base; the infrared light source is fixed on the light source base and is fixed with the air chamber through the binding site. Compared with the existing method for detecting the single gas, the method for detecting the multiple gases realizes the detection of the multiple gases by rotating the optical filter switching layer fixed on the gas chamber. When detecting multiple type of gas, only need dismouting light filter to switch the light filter on the layer, need not to change infrared detector, can realize easy dismounting. Compared with an infrared detector with multiple windows and multiple detection units, the invention can complete the detection of the concentration of various gases by only two infrared detection units, and has the advantages of simple realization mode, low cost and better integrity. And a single-light-path multi-wavelength mode is used, so that the volume of the device is effectively reduced, and the accuracy of gas detection is improved.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (7)
1. The rotary type air chamber infrared gas detection device is characterized by comprising an air chamber (20), an optical filter switching layer (4), an infrared detector (15), a detector base (5), an infrared light source (2) and a light source base (3), wherein the air chamber (20) is of a cylindrical structure at the outer part, a cylindrical air cavity (1) is arranged in the air chamber and is used as an infrared air chamber, and air holes are formed in the side surface of the cylindrical structure at the outer part; one end of the air chamber (20) is provided with an optical filter switching layer (4), and hollow windows are arranged at positions of every 90 degrees on the optical filter switching layer (4) and at the center of the optical filter switching layer (4) and used for fixing optical filters with different wavelengths; the front end of the optical filter switching layer (4) is provided with an infrared detector, the infrared detector (15) is provided with an infrared detector reference signal channel window (9) and an infrared detector gas signal channel window to be detected (10), the windows are made of glass materials without optical filtering function and are fixed with the optical filter switching layer (4) through a detector base (5); the other end of the air chamber (20) is provided with an infrared light source (2), and the infrared light source (2) is fixed on the light source base (3).
2. A rotary gas cell infrared gas detection device as claimed in claim 1, wherein: the air chamber (20) is subjected to gold plating treatment, and a first air hole (13) and a second air hole (14) on the side surface of the external cylindrical structure of the air chamber (20) penetrate through the internal cylindrical air cavity (1) and are used for introducing gas to be detected into the cylindrical air cavity (1) or discharging original gas in the cylindrical air cavity (1) and introducing new gas.
3. A rotary gas cell infrared gas detection device as claimed in claim 1, wherein: the optical filter switching layer (4) is of a circular structure with the diameter identical to that of the air chamber, and is fixed on a combination surface (16) of the air chamber and the optical filter switching layer, hollow windows are arranged at positions of every 90 degrees and are used for fixing a first optical filter (6), a third optical filter (8), a fourth optical filter (11) and a fifth optical filter (12), the center of the optical filter switching layer (4) is a second optical filter (7) serving as a reference window wavelength optical filter, an optical filter window rotating right above the window is a gas window to be detected, and corresponding gas to be detected is detected through rotation selection.
4. A rotary gas cell infrared gas detection device as claimed in claim 1, wherein: the diameter of the cylindrical air cavity (1) is the distance between two optical filters on the longitudinal axis of the optical filter switching layer (4), and two complete optical filter windows appear on one side (18) of the cylindrical air cavity combined with the optical filter switching layer in each rotation.
5. A rotary gas cell infrared gas detection device as claimed in claim 1, wherein: and an infrared detector reference signal channel window (9) and an infrared detector gas signal channel window (10) in the infrared detector (15) are respectively superposed with the central optical filter and the longitudinal axis vertex optical filter of the optical filter switching layer (4).
6. A rotary gas cell infrared gas detection device as claimed in claim 1, wherein: the position of the infrared light source (2) is in the central position of one side (19) where the cylindrical air cavity is combined with the light source base, the wavelength emitted by the infrared light source (2) comprises the wavelengths of a first optical filter (6), a second optical filter (7), a third optical filter (8), a fourth optical filter (11) and a fifth optical filter (12), and the light source base is of a circular structure with the same diameter as the air cavity.
7. A rotary gas cell infrared gas detection device as claimed in claim 1, wherein: the infrared detector (15) is a dual-channel thermopile infrared detector or a dual-channel pyroelectric infrared detector, and the detector base (5) is of a circular structure with the diameter being the same as that of the air chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010540740.XA CN111829974B (en) | 2020-06-15 | 2020-06-15 | Rotary type air chamber infrared gas detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010540740.XA CN111829974B (en) | 2020-06-15 | 2020-06-15 | Rotary type air chamber infrared gas detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111829974A true CN111829974A (en) | 2020-10-27 |
| CN111829974B CN111829974B (en) | 2023-09-22 |
Family
ID=72898728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010540740.XA Active CN111829974B (en) | 2020-06-15 | 2020-06-15 | Rotary type air chamber infrared gas detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111829974B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029996A (en) * | 2021-03-31 | 2021-06-25 | 山东大学 | Hydrogen purity online detection instrument and use method and application thereof |
| CN113588586A (en) * | 2021-08-10 | 2021-11-02 | 南京信息工程大学 | STM 32-based multi-component gas concentration detection system and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0943143A (en) * | 1995-07-28 | 1997-02-14 | Shimadzu Corp | Gas-correlated spectroscope |
| CN1621809A (en) * | 2003-11-24 | 2005-06-01 | 上海化工研究院 | Filter wheel assembly of negative optical filtering multi-component infrared analyzer |
| CN1912585A (en) * | 2005-08-12 | 2007-02-14 | 深圳迈瑞生物医疗电子股份有限公司 | Method and device for automatic correcting and measuring gas concentration using infrared light absorption characteristic |
| CN103017991A (en) * | 2012-11-26 | 2013-04-03 | 中国科学技术大学 | Suction type SF6 gas leakage monitoring device and method |
| CN206235556U (en) * | 2016-05-17 | 2017-06-09 | 杭州麦乐克科技股份有限公司 | A kind of infrared composite gas sensor |
| CN108318428A (en) * | 2018-05-16 | 2018-07-24 | 德州尧鼎光电科技有限公司 | A kind of photoelectric sensing measuring device |
| KR20200055236A (en) * | 2018-11-13 | 2020-05-21 | 건국대학교 산학협력단 | A NDIR analyzer using Two Functional Channels and method thereof |
-
2020
- 2020-06-15 CN CN202010540740.XA patent/CN111829974B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0943143A (en) * | 1995-07-28 | 1997-02-14 | Shimadzu Corp | Gas-correlated spectroscope |
| CN1621809A (en) * | 2003-11-24 | 2005-06-01 | 上海化工研究院 | Filter wheel assembly of negative optical filtering multi-component infrared analyzer |
| CN1912585A (en) * | 2005-08-12 | 2007-02-14 | 深圳迈瑞生物医疗电子股份有限公司 | Method and device for automatic correcting and measuring gas concentration using infrared light absorption characteristic |
| CN103017991A (en) * | 2012-11-26 | 2013-04-03 | 中国科学技术大学 | Suction type SF6 gas leakage monitoring device and method |
| CN206235556U (en) * | 2016-05-17 | 2017-06-09 | 杭州麦乐克科技股份有限公司 | A kind of infrared composite gas sensor |
| CN108318428A (en) * | 2018-05-16 | 2018-07-24 | 德州尧鼎光电科技有限公司 | A kind of photoelectric sensing measuring device |
| KR20200055236A (en) * | 2018-11-13 | 2020-05-21 | 건국대학교 산학협력단 | A NDIR analyzer using Two Functional Channels and method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 张永怀 , 张进永, 刘君华: "智能红外多组分气体分析仪", 测控技术, no. 05, pages 69 - 73 * |
| 陈思扬;徐雷钧;赵不贿;: "一种小型化多组分气体检测装置的设计", 自动化与仪表, no. 03, pages 9 - 11 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029996A (en) * | 2021-03-31 | 2021-06-25 | 山东大学 | Hydrogen purity online detection instrument and use method and application thereof |
| CN113588586A (en) * | 2021-08-10 | 2021-11-02 | 南京信息工程大学 | STM 32-based multi-component gas concentration detection system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111829974B (en) | 2023-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111829974B (en) | Rotary type air chamber infrared gas detection device | |
| CN106990065B (en) | Non-spectroscopic infrared gas sensor for multi-region and multi-gas measurement | |
| CN101105449A (en) | Double light source double sensitive element infra-red multiple gas detection sensor | |
| CN105651703A (en) | Method for measuring extinction coefficient of ring-down gas of optical cavity based on change of cavity length | |
| US10190974B2 (en) | Optical gas sensor comprising an LED emitter for the emission of light of a narrow bandwidth | |
| CN106018314A (en) | Multi-band multi-gas detection device and method | |
| CN110361355B (en) | Spiral gas concentration detection device, manufacturing method thereof and alarm device | |
| CN108489924A (en) | A kind of sensing probe and non-dispersive infrared gas sensor detecting system | |
| CN103969210A (en) | Open type CO2/H2O monitoring device based on non-dispersive infrared principle | |
| CN206609786U (en) | The infrared multi-pass gas concentration measuring apparatus of active cycle air suction type | |
| CN110887805A (en) | Regional anomalous gas detection device of multiple spot sight | |
| CN110361354B (en) | Multi-gas concentration detection device, manufacturing method thereof and alarm device | |
| CN117309764A (en) | Multi-gas concentration measuring instrument based on integral cavity | |
| CN210626326U (en) | Multi-gas concentration detection device and alarm device | |
| CN106680235A (en) | Active circulating gas suction type infrared multi-light path gas concentration measurement device | |
| CN207937352U (en) | A kind of sensing probe and non-dispersive infrared gas sensor detecting system | |
| CN111045200A (en) | Light reflection assembly for prolonging optical path | |
| CN102353645A (en) | NDIR (Non-Dispersive Infra-Red)-based intelligent infrared gas sensor | |
| CN212568461U (en) | High-speed high-precision NDIR sensor | |
| CN211741062U (en) | Infrared CO gas analyzer based on gas correlation filtering technology | |
| CN209841675U (en) | Infrared methane gas intelligent detector for underground pipe network | |
| CN209606313U (en) | The device of sulfur dioxide and nitrogen dioxide in surrounding air is detected simultaneously | |
| CN219512097U (en) | Gas detection device | |
| CN102778441A (en) | High-precision infrared gas sensor with bent pipe optical cavity gas chamber | |
| CN212646466U (en) | Circular high-resolution infrared absorption gas detector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |