CN111912806A - NOx gas concentration detection platform - Google Patents
NOx gas concentration detection platform Download PDFInfo
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- CN111912806A CN111912806A CN202010559942.9A CN202010559942A CN111912806A CN 111912806 A CN111912806 A CN 111912806A CN 202010559942 A CN202010559942 A CN 202010559942A CN 111912806 A CN111912806 A CN 111912806A
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- gas
- light source
- air chamber
- concentration detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 230000007613 environmental effect Effects 0.000 claims abstract description 7
- 238000001228 spectrum Methods 0.000 claims description 11
- 239000000835 fiber Substances 0.000 claims description 7
- 230000035939 shock Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 239000013307 optical fiber Substances 0.000 abstract description 4
- 238000000862 absorption spectrum Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 48
- 229910002089 NOx Inorganic materials 0.000 description 10
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 7
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 5
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 230000002265 prevention 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
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
-
- 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
-
- 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
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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 NOx gas concentration detection platform, which comprises a light source, a gas chamber, a spectrometer, a light source and an installation platform, wherein the gas chamber, the spectrometer and the light source are installed on the installation platform in a modular mode, the light source is connected with the gas chamber through optical fibers, the gas chamber is connected with the spectrometer through the optical fibers, a heating device is arranged on the gas chamber and used for heating gas in the gas chamber, a temperature sensor is also arranged in the gas chamber and used for measuring the temperature in the gas chamber, the invention adopts an ultraviolet differential absorption spectrum detection technology, can directly measure the concentration of NOx gas in the gas, has a heating temperature control function, prevents water vapor from influencing the detection effect, and has a buffer device to prevent the detection of the installation platform from being influenced by environmental vibration.
Description
Technical Field
The invention relates to the field of detection of NOx gas concentration, in particular to a NOx gas concentration detection platform.
Background
Along with the development of national economy, the automobile sales volume in China is rapidly increased, the exhaust emission of motor vehicles accounts for 60-70% of the whole atmospheric pollution, the automobile exhaust is one of the most important factors for causing air pollution, and NOx gas in the exhaust can cause poisoning and endanger the health and safety of people. The prevention and control of the automobile pollution become the requirements of ecological development and economic and social development in China, and the detection of the tail gas of the motor vehicle is one of the most effective means in the aspect of controlling the pollution of the motor vehicle.
At present, the tail gas analyzer in the society mainly adopts an infrared principle to detect oxynitride, needs an independent nitrogen dioxide to be converted into a nitrogen oxide converter, and the equipment conversion rate can be gradually reduced along with the lapse of time, and can not directly measure nitrogen dioxide, and response time is longer, has still increased the cost to can mix with water vapor in the tail gas usually, influence detection effect.
Therefore, the invention provides a NOx gas concentration detection platform which can well solve the pain points.
Disclosure of Invention
The embodiment of the invention provides a NOx gas concentration detection platform, which is used for solving the problems that in the prior art, nitrogen dioxide cannot be directly measured, the response time is long, the cost is increased, and the detection effect is influenced because water vapor is usually mixed in tail gas.
According to an aspect of the present invention, there is provided a NOx gas concentration detection platform, characterized in that: including light source, air chamber, spectrum appearance, light source, mounting platform, wherein air chamber, spectrum appearance, light source are installed on mounting platform with the mode of module, the light source pass through optic fibre with the air chamber is connected the air chamber passes through optic fibre and is connected with the spectrum appearance, be provided with heating device on the air chamber, heating device is used for heating the indoor gas of gas, still be provided with temperature sensor in the air chamber, temperature sensor is used for surveying the indoor temperature of air chamber.
Optionally, the light source comprises an ultraviolet generator.
Optionally, the mounting platform is further provided with a buffer device, the buffer device is fixedly mounted at four corners of the ground end of the mounting platform, and the buffer device is used for reducing the influence of environmental vibration on the mounting platform.
Optionally, the buffer device comprises a spring buffer, a rubber buffer, a hydraulic buffer.
Optionally, a lens is arranged in the gas chamber, the lens is a convex lens, and the lens is used for converging light rays transmitted from the light source and entering the spectrometer.
Optionally, a gas inlet and a gas outlet are arranged in the gas chamber, and the gas inlet and the gas outlet are respectively used for gas to enter the gas chamber and to be discharged from the gas chamber.
In the embodiment of the invention, compared with the prior art, the beneficial effects are as follows: the NOx gas concentration detection platform provided by the invention can directly measure the concentrations of nitric oxide and nitrogen dioxide in gas, replaces the existing detection mode of a converter and an infrared platform, can detect the concentrations of other different gas components by selecting different spectral wave bands, has the advantages of modularization, low cost, high flexibility, high stability, high detection precision, short response time, long service life and the like, has the functions of heating and temperature control, prevents water vapor from influencing the detection effect, and has a buffer device to prevent the detection of an installation platform from being influenced by environmental vibration.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a schematic plan view of an optional NOx gas concentration detection platform according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the embodiments of the present invention more comprehensible to those skilled in the art, the technical solution of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
This embodiment is shown in fig. 1, a NOx gas concentration detection platform, which is characterized in that: including light source 6, air chamber 1, spectrum appearance 5, light source 6, mounting platform 7, wherein air chamber 1, spectrum appearance 5, light source 6 install on mounting platform 7 with the mode of module, light source 6 passes through optic fibre 4 and is connected with air chamber 1, air chamber 1 passes through optic fibre 4 and is connected with spectrum appearance 5, be provided with heating device 2 on the air chamber 1, heating device 2 is used for heating the gas in the air chamber 1, still be provided with temperature sensor 3 in the air chamber 1, temperature sensor 3 is used for surveying the temperature in the air chamber 1.
Further, the light source 6 includes an ultraviolet ray generator.
Further, mounting platform 7 still is provided with buffer 8, and buffer 8 fixed mounting is in the four corners of mounting platform 7 ground end, and buffer 8 is used for reducing the influence of environmental impact to mounting platform 7.
Further, the damper device 8 includes a spring damper, a rubber damper, and a hydraulic damper.
Further, a lens is arranged in the gas chamber 1, the lens is a convex lens, and the lens is used for converging light rays transmitted from the light source 6 and entering the spectrometer 5.
Further, a gas inlet and a gas outlet are arranged in the gas chamber 1, and the gas inlet and the gas outlet are respectively used for gas to enter the gas chamber 1 and to be discharged from the gas chamber 1.
The working principle of the invention is as follows: the light source 6 is connected with the gas chamber 1 and the spectrometer 5 through the optical fiber 4, ultraviolet light emitted by the light source 6 enters the gas chamber 1 through the optical fiber 4, when the ultraviolet light passes through the optical path of the gas chamber 1, different gas molecules have obvious absorption characteristics in a specific spectral band, so that the received light intensity is weakened, the received light is converged through the lens and enters the spectrometer 5 to obtain the absorption spectrum of the gas, and then data processing is performed through a related algorithm, so that the concentration data of the gas to be detected is obtained;
The invention adopts the ultraviolet differential absorption spectrum detection technology, can directly measure the concentration of nitric oxide and nitrogen dioxide in gas, can detect the concentration of other different gas components by selecting different spectrum wave bands, has the functions of heating and temperature control, prevents water vapor from influencing the detection effect, has a buffer device, prevents environmental vibration from influencing the detection of an optical platform, and has the advantages of modularization, low cost, high flexibility, high stability, high detection precision, short response time, long service life and the like.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A NOx gas concentration detection platform is characterized in that: including light source (6), air chamber (1), spectrum appearance (5), light source (6), mounting platform (7), wherein air chamber (1), spectrum appearance (5), light source (6) are installed on mounting platform (7) with the mode of module, light source (6) pass through optic fibre (4) with air chamber (1) are connected air chamber (1) pass through optic fibre (4) and are connected with spectrum appearance (5), be provided with heating device (2) on air chamber (1), heating device (2) are used for heating the gas in air chamber (1), still be provided with temperature sensor (3) in air chamber (1), temperature sensor (3) are used for surveying the temperature in air chamber (1).
2. The NOx gas concentration detection platform according to claim 1, wherein: the light source (6) comprises an ultraviolet generator.
3. The NOx gas concentration detection platform according to claim 1, wherein: mounting platform (7) still are provided with buffer (8), buffer (8) fixed mounting is in the four corners of mounting platform (7) ground end, buffer (8) are used for reducing the influence of environmental shock to mounting platform (7).
4. The NOx gas concentration detection platform according to claim 3, wherein: the buffer device (8) comprises a spring buffer, a rubber buffer and a hydraulic buffer.
5. The NOx gas concentration detection platform according to claim 1, wherein: the gas cell (1) is internally provided with a lens which is a convex lens, and the lens is used for converging light rays transmitted from the light source (6) and enabling the light rays to enter the spectrometer (5).
6. The NOx gas concentration detection platform according to claim 1, wherein: and a gas inlet and a gas outlet are arranged in the gas chamber (1), and the gas inlet and the gas outlet are respectively used for gas to enter the gas chamber (1) and to be discharged from the gas chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559942.9A CN111912806A (en) | 2020-06-18 | 2020-06-18 | NOx gas concentration detection platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559942.9A CN111912806A (en) | 2020-06-18 | 2020-06-18 | NOx gas concentration detection platform |
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| Publication Number | Publication Date |
|---|---|
| CN111912806A true CN111912806A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010559942.9A Pending CN111912806A (en) | 2020-06-18 | 2020-06-18 | NOx gas concentration detection platform |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202886272U (en) * | 2012-11-02 | 2013-04-17 | 青岛佳明测控科技股份有限公司 | Flue gas analyzer based tube-corner prism |
| US20150241339A1 (en) * | 2010-11-12 | 2015-08-27 | Michail A. Maksyutenko | Optical Gas Analyzer |
| CN104990883A (en) * | 2015-07-28 | 2015-10-21 | 陕西科技大学 | Device for detecting gas concentration by spectrometer |
| US20150346031A1 (en) * | 2014-05-27 | 2015-12-03 | GHGSat Inc. | Fabry-perot interferometer based satellite detection of atmospheric trace gases |
| CN105424635A (en) * | 2016-01-12 | 2016-03-23 | 中绿环保科技股份有限公司 | Ultraviolet spectrum flue gas analyzer |
| CN106198422A (en) * | 2016-08-31 | 2016-12-07 | 青岛博睿光电科技有限公司 | A kind of portable difference absorption spectrum method volatile organic matter gas monitoring instrument |
| CN110208216A (en) * | 2019-07-04 | 2019-09-06 | 中国计量大学 | A kind of hydrogen sensing device of the thin-core fibers M-Z based on FBG |
| CN209647655U (en) * | 2019-03-06 | 2019-11-19 | 江苏标丽精密机械有限公司 | It is a kind of to use drilling device from the spinneret to cool down production and processing |
| CN210121906U (en) * | 2018-08-28 | 2020-03-03 | 盛业金海建筑工程(天津)有限公司 | Material cutting machine for building decoration |
| CN210738765U (en) * | 2019-11-05 | 2020-06-12 | 奥斯龙泵业江苏有限公司 | Air compression drive type vacuum pump |
-
2020
- 2020-06-18 CN CN202010559942.9A patent/CN111912806A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150241339A1 (en) * | 2010-11-12 | 2015-08-27 | Michail A. Maksyutenko | Optical Gas Analyzer |
| CN202886272U (en) * | 2012-11-02 | 2013-04-17 | 青岛佳明测控科技股份有限公司 | Flue gas analyzer based tube-corner prism |
| US20150346031A1 (en) * | 2014-05-27 | 2015-12-03 | GHGSat Inc. | Fabry-perot interferometer based satellite detection of atmospheric trace gases |
| CN104990883A (en) * | 2015-07-28 | 2015-10-21 | 陕西科技大学 | Device for detecting gas concentration by spectrometer |
| CN105424635A (en) * | 2016-01-12 | 2016-03-23 | 中绿环保科技股份有限公司 | Ultraviolet spectrum flue gas analyzer |
| CN106198422A (en) * | 2016-08-31 | 2016-12-07 | 青岛博睿光电科技有限公司 | A kind of portable difference absorption spectrum method volatile organic matter gas monitoring instrument |
| CN210121906U (en) * | 2018-08-28 | 2020-03-03 | 盛业金海建筑工程(天津)有限公司 | Material cutting machine for building decoration |
| CN209647655U (en) * | 2019-03-06 | 2019-11-19 | 江苏标丽精密机械有限公司 | It is a kind of to use drilling device from the spinneret to cool down production and processing |
| CN110208216A (en) * | 2019-07-04 | 2019-09-06 | 中国计量大学 | A kind of hydrogen sensing device of the thin-core fibers M-Z based on FBG |
| CN210738765U (en) * | 2019-11-05 | 2020-06-12 | 奥斯龙泵业江苏有限公司 | Air compression drive type vacuum pump |
Non-Patent Citations (2)
| Title |
|---|
| 张景超, 刘瑾, 王玉田, 杨海马: "差分吸收式光纤NO_2气体传感器", 仪表技术与传感器, no. 05, pages 4 - 5 * |
| 苟怡;: "光纤光谱吸收式甲烷检测系统及自调校方法研究", 自动化技术与应用, no. 05, pages 125 - 128 * |
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