CN106124441B - Single-return ultra-low range ultraviolet analyzer and analysis method thereof - Google Patents
Single-return ultra-low range ultraviolet analyzer and analysis method thereof Download PDFInfo
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- CN106124441B CN106124441B CN201610449103.5A CN201610449103A CN106124441B CN 106124441 B CN106124441 B CN 106124441B CN 201610449103 A CN201610449103 A CN 201610449103A CN 106124441 B CN106124441 B CN 106124441B
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- temperature controller
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- 238000004458 analytical method Methods 0.000 title abstract description 5
- 239000007789 gas Substances 0.000 claims abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000001301 oxygen Substances 0.000 claims abstract description 12
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 238000001228 spectrum Methods 0.000 abstract 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
Images
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
- G01N21/33—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
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- 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
- G01N2201/02—Mechanical
- G01N2201/023—Controlling conditions in casing
- G01N2201/0231—Thermostating
Abstract
The invention discloses a single-return ultra-low range ultraviolet analyzer and an analysis method thereof, wherein the single-return ultra-low range ultraviolet analyzer comprisesShell, temperature controller, solid state relay, spectrum appearance temperature module, low-range gas chamber module and oxygen sensor, the flowmeter is installed in the outside of shell lower part, and HMI board is installed to the inside bottom of shell, and the temperature controller is installed in the shell of HMI board top, and solid state relay installs the top at the temperature controller, and spectrum appearance temperature module is located temperature controller and solid state relay's right side, and the top at spectrum appearance temperature module is installed to low-range gas chamber module. The invention uses deep ultraviolet waveband to carry out SO2NO, etc. are detected, the sensitivity is one order of magnitude higher than that of visible light wave band, and the absorption optical path is increased under the condition of not increasing the length through once reflection, so that the ultra-low range measurement can be carried out, the temperature controller and the spectrometer temperature control module are adopted, the problem of low test accuracy caused by temperature drift is avoided, and the device is suitable for measuring range components of 0-100 ppm.
Description
Technical Field
The invention relates to an ultraviolet analyzer, in particular to a single-return ultra-low range ultraviolet analyzer and an analysis method thereof.
Background
At present, the demand of electric power and coal energy is continuously increased due to the continuous and rapid development of economy, so that the discharge amount of sulfur dioxide, hydrogen sulfide and nitrogen oxide in China is continuously increased, and the gas discharged into the atmosphere can cause direct and serious influence on the natural ecological environment and the living environment of people. In recent years, our country has come out environmental regulations, stipulate clear indexes about flue gas emission and implement pollution discharge charging, with the economic loss caused by the emissions being paid for by billions of yuan every year, and from the perspective of sustainable development strategy and improvement of civil environment. Therefore, the development of an eye-flue gas on-line analyzer as a plant and environmental monitoring department is imperative.
At present, on-line analytical instruments operated in factories are mainly based on modes such as infrared and ultraviolet absorption, ultraviolet fluorescence and the like. The instrument adopting the infrared absorption detection principle has the advantages that due to the limitation of the monitoring principle, the detection limit of the method is low, the stability of the instrument is poor, and the interference capability, particularly the background gas interference resistance capability, is poor, so that the application of the infrared gas analyzer in certain special occasions is limited; and no mature ultraviolet analyzer with reasonable structure and single return ultra-low range appears.
Disclosure of Invention
The invention aims to provide a single-return ultra-low range ultraviolet analyzer with simple structure and high accuracy and an analysis method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a single-return ultra-low range ultraviolet analyzer comprises a shell, a temperature controller, a solid state relay, a spectrometer temperature control module, a low range gas chamber module and an oxygen sensor, a flowmeter is arranged on the outer side of the lower part of the shell, an HMI board is arranged at the bottom end in the shell, the temperature controller is arranged in the shell above the HMI board, the solid-state relay is arranged above the temperature controller, the spectrometer temperature control module is positioned at the right side of the temperature controller and the solid state relay, the low-range gas chamber module is arranged above the spectrometer temperature control module, a pump valve assembly is also installed above the right side of the low-range gas chamber module, a circuit board is also installed above the left side of the low-range gas chamber module, the oxygen sensor is arranged on the inner side of the top of the shell, and a 12V switching power supply, a 24V switching power supply and a power supply filter are further sequentially arranged in the shell on the left side of the oxygen sensor.
As a further scheme of the invention: and a lens and a concave reflector are also arranged in the low-range gas chamber module.
As a further scheme of the invention: and an ultraviolet aluminum coating film is arranged on the surface of the concave reflector.
As a further scheme of the invention: the HMI board is provided with 10 external interface modules.
As a still further scheme of the invention: the pump valve assembly consists of a three-way valve and a vacuum pump.
Compared with the prior art, the invention has the beneficial effects that:
the invention uses deep ultraviolet waveband to carry out SO2NO, etc. are detected, the sensitivity is one order of magnitude higher than that of visible light wave band, and the absorption optical path is increased under the condition of not increasing the length through once reflection, so that the ultra-low range measurement can be carried out, the temperature controller and the spectrometer temperature control module are adopted, the problem of low test accuracy caused by temperature drift is avoided, and the device is suitable for measuring range components of 0-100 ppm.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the present invention placed in a measuring cell for measurement.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Referring to fig. 1-2, a single return ultra-low range ultraviolet analyzer comprises a housing 1, a temperature controller 2, a solid state relay 3, a spectrometer temperature control module 4, a low range gas chamber module 5 and an oxygen sensor 6, wherein a flow meter 7 is installed on the outer side of the lower portion of the housing 1, the flow meter 7 is used for displaying real-time flow, an HMI board 8 is installed at the bottom end inside the housing 1, the HMI board 8 is used for integrally controlling the single return ultra-low range ultraviolet analyzer, the HMI board 8 is provided with 10 external interface modules, the external interface modules can perform digital input and output and analog input and output, and can perform 232 communication or 485 communication, the temperature controller 2 is installed in the housing 1 above the HMI board 8, the solid state relay 3 is installed above the temperature controller 2, and the temperature controller 2 and the solid state relay 3 are used for controlling the spectrometer to keep constant temperature, the spectrometer temperature control module 4 is positioned on the right side of the temperature controller 2 and the solid-state relay 3, the low-range gas chamber module 5 is installed above the spectrometer temperature control module 4, the pump valve assembly 9 is further installed on the right side of the low-range gas chamber module 5, the pump valve assembly 9 is composed of a three-way valve and a vacuum pump, the three-way valve is used for gas circuit switching, the circuit board 10 is further installed on the left side of the low-range gas chamber module 5, the oxygen sensor 6 is installed on the inner side of the top of the shell 1, the oxygen sensor 6 can be used for electrochemically measuring the oxygen content, the shell 1 on the left side of the oxygen sensor 6 is further internally provided with a 12V switch power supply 11, a 24V switch power supply 12 and a power supply filter 13 in sequence, the 12V switch power supply 11 and the 24V switch power supply 12 provide direct current for the single return ultra-low-range ultraviolet analyzer, and the low-range, the surface of the concave reflector 15 is provided with an ultraviolet aluminum coating film to improve the reflectivity of deep ultraviolet light.
When the single-return ultra-low range ultraviolet analyzer is used for analyzing, light emitted by a light source 16 forms parallel light through a lens 14, the parallel light is emitted to a concave reflector 12 at the other end of a low range gas chamber module 5, reflected and converged through a concave reflector 15, and converged to an ultraviolet optical fiber through a receiving end lens 17 to enter a spectrometer for detection; the concave reflector 15 can be adjusted in multiple dimensions, so that light emitted by the light source 16 can strike the center of the concave reflector 15, and the reflected light can reach the receiving end lens 17.
The invention uses deep ultraviolet waveband to carry out SO2NO, etc. are detected, the sensitivity is one order of magnitude higher than that of the visible light wave band, and the absorption optical path is increased under the condition of not increasing the length through one-time reflection, so that the ultra-low range measurement can be carried out, the temperature controller 2 and the spectrometer temperature control module 4 are adopted, the problem of low test accuracy caused by temperature drift is avoided, and the device is suitable for measuring the range components of 0-100 ppm.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (3)
1. The single-return ultra-low range ultraviolet analyzer is characterized by comprising a shell (1), a temperature controller (2), a solid-state relay (3), a spectrometer temperature control module (4), a low range gas chamber module (5) and an oxygen sensor (6), wherein a flow meter (7) is installed on the outer side of the lower portion of the shell (1), an HMI (human machine interface) board (8) is installed at the bottom end inside the shell (1), the temperature controller (2) is installed in the shell (1) above the HMI board (8), the solid-state relay (3) is installed above the temperature controller (2), the spectrometer temperature control module (4) is located on the right sides of the temperature controller (2) and the solid-state relay (3), the low range gas chamber module (5) is installed above the spectrometer temperature control module (4), and a pump valve assembly (9) is further installed above the right side of the low range gas chamber module (5), a circuit board (10) is further mounted above the left side of the low-range gas chamber module (5), the oxygen sensor (6) is mounted on the inner side of the top of the shell (1), and a 12V switching power supply (11), a 24V switching power supply (12) and a power supply filter (13) are further sequentially mounted in the shell (1) on the left side of the oxygen sensor (6); a lens (14), a concave reflector (15) and a receiving end lens (17) are further mounted inside the low-range gas chamber module (5), wherein light emitted by a light source (16) forms parallel light through the lens (14), the parallel light is irradiated onto the concave reflector (12) at the other end of the low-range gas chamber module (5), reflected and converged through the concave reflector (12), and converged through the receiving end lens (17) to ultraviolet optical fibers to enter a spectrometer for detection; wherein the concave reflector (15) is multi-dimensionally adjustable to enable light from the light source (16) to strike the exact center of the concave reflector (15); the light source (16) is a deep ultraviolet light source; the pump valve assembly consists of a three-way valve and a vacuum pump.
2. The single-return ultra-low range ultraviolet analyzer according to claim 1, characterized in that the surface of the concave reflector (15) is provided with an ultraviolet aluminum coating.
3. The single-return ultra-low range ultraviolet analyzer according to claim 1, characterized in that the HMI board (8) is provided with 10 external interface modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610449103.5A CN106124441B (en) | 2016-06-21 | 2016-06-21 | Single-return ultra-low range ultraviolet analyzer and analysis method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610449103.5A CN106124441B (en) | 2016-06-21 | 2016-06-21 | Single-return ultra-low range ultraviolet analyzer and analysis method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106124441A CN106124441A (en) | 2016-11-16 |
| CN106124441B true CN106124441B (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610449103.5A Active CN106124441B (en) | 2016-06-21 | 2016-06-21 | Single-return ultra-low range ultraviolet analyzer and analysis method thereof |
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Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005098765A (en) * | 2003-09-24 | 2005-04-14 | Shimadzu Corp | Light source apparatus and analyzer using the same |
| CN2879175Y (en) * | 2005-08-02 | 2007-03-14 | 德菲电气（北京）有限公司 | Multi-component ultraviolet on-line gas analyzing inetrument |
| CN101963529A (en) * | 2010-09-03 | 2011-02-02 | 北京理工大学 | Extreme ultraviolet scanning imaging spectrometer |
| CN102221532A (en) * | 2011-06-03 | 2011-10-19 | 天津市蓝宇科工贸有限公司 | Direct insertion type smoke ultraviolet differential probe with online calibration light path |
| CN102359945A (en) * | 2011-07-20 | 2012-02-22 | 郭振铎 | Novel monitor |
| CN102749286B (en) * | 2012-07-31 | 2014-11-12 | 郭振铎 | Novel portable gas normal position monitor of flue gas and pipeline gas |
| CN102788764A (en) * | 2012-08-21 | 2012-11-21 | 南京埃森环境技术有限公司 | Ultraviolet analyzer and detection method for low concentration smoke |
| CN203870005U (en) * | 2014-03-26 | 2014-10-08 | 杭州泽天科技有限公司 | Laser receiving and emission device for in-situ laser gas analyzer |
| CN104949917B (en) * | 2014-03-27 | 2017-07-11 | 天津同阳科技发展有限公司 | Light path adjustable multiple reflection temperature control sample pool device |
| CN203965315U (en) * | 2014-07-08 | 2014-11-26 | 郭振铎 | A kind of uv absorption low concentration escape gas test device |
| JP6294186B2 (en) * | 2014-08-12 | 2018-03-14 | 株式会社日立ハイテクノロジーズ | Automatic analyzer |
| CN105334163B (en) * | 2015-12-11 | 2017-12-22 | 南京霍普斯科技有限公司 | A kind of device for long light path gas sample cell adjustment test |
| CN105588815B (en) * | 2016-03-08 | 2018-08-07 | 国家电网公司 | A kind of infrared gas detector based on Tiny pore |
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2016
- 2016-06-21 CN CN201610449103.5A patent/CN106124441B/en active Active
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| CN106124441A (en) | 2016-11-16 |
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Effective date of registration: 20210121 Address after: 310053 Room 301, 3 / F, building 1, 22 Zhiren street, Puyan street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: HANGZHOU CHUNLAI TECHNOLOGY Co.,Ltd. Address before: 310052 7th floor, building 2, No. 22, Park Middle Road, Puyan street, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU ZETIAN TECHNOLOGY Inc. |
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