CN108398396B - Ultraviolet reflection type double-optical-path high-temperature optical-mechanical assembly - Google Patents
Ultraviolet reflection type double-optical-path high-temperature optical-mechanical assembly Download PDFInfo
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- CN108398396B CN108398396B CN201810167930.4A CN201810167930A CN108398396B CN 108398396 B CN108398396 B CN 108398396B CN 201810167930 A CN201810167930 A CN 201810167930A CN 108398396 B CN108398396 B CN 108398396B
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- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 229910052805 deuterium Inorganic materials 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 claims description 18
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 4
- 239000013307 optical fiber Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 6
- 238000002211 ultraviolet spectrum Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910000619 316 stainless steel Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 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
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
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- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention provides an ultraviolet reflection type double-optical-path high-temperature optical-mechanical assembly, which realizes the ultraviolet spectrum and laser double-optical-path work of an analyzer, measures the moisture content by laser at the same time, is particularly suitable for the working conditions of high temperature, high humidity and low emission, and is real-time and accurate. The device comprises a high-temperature gas pool, an ultraviolet transmitting group, an ultraviolet receiving group, a laser transmitting/receiving group and a heating assembly; the ultraviolet emitting group, the ultraviolet receiving group and the laser emitting/receiving group are all positioned at the same side of the high-temperature gas tank, and a total reflection mirror is arranged at the other side of the high-temperature gas tank; the laser emission/receiving group is arranged at the central position of the end part of the high-temperature gas pool, the ultraviolet emission group and the ultraviolet receiving group are arranged at the outer side of the laser emission/receiving group through an outer box, and the ultraviolet emission group and the ultraviolet receiving group are obliquely arranged to enable emitted light and received light to be symmetrically crossed on the mirror surface of the total reflection mirror; the heating rod of the heating component is arranged on the outer surface of the high-temperature gas pool, and is externally coated with a heat-insulating sleeve.
Description
Technical Field
The invention belongs to the field of flue gas analysis, and relates to an ultraviolet reflection type double-optical-path high-temperature optical-mechanical assembly, which realizes double-optical-path work of an ultraviolet spectrum (200 nm-400 nm) and laser (1512 nm) of an analyzer, and simultaneously measures the moisture content by using the laser, thereby solving the problems that the existing instrument works at normal temperature, the measured data is inaccurate due to moisture absorption, interference and the like, most instruments have no data or negative numbers especially when the concentration of ultra-low emission components is low, the ultraviolet reflection type double-optical-path high-temperature optical-mechanical assembly is more suitable for the working conditions of high temperature, high humidity and low emission, and the concentration of components in flue gas is accurately.
Background
Ultra-low emission means that the coal-fired boiler of the thermal power plant adopts a technology of a multi-pollutant efficient collaborative removal integrated system in the processes of power generation operation, tail end treatment and the like, so that the emission concentration of the atmospheric pollutants basically meets the emission limit value of a gas turbine unit, namely the emission concentrations of smoke dust, sulfur dioxide and nitrogen oxides (the reference oxygen content is 6%) do not exceed 10 mg/m, 35 mg/m and 50 mg/m respectively for thin film rice and thin film rice. For real-time and accuracy. The concentration of components in the flue gas is truly reflected, inaccurate measurement data caused by water vapor absorption, interference and the like is eliminated, and the detection must be carried out under the original state of the flue gas, namely the working condition of high temperature and high humidity.
There is a need for improvements in existing high temperature optical-mechanical systems.
Disclosure of Invention
The invention solves the technical problem of providing an ultraviolet and laser reflection type double-optical-path high-temperature optical-mechanical assembly which has simple and compact structure and convenient installation, adjustment and operation.
The specific technical solution of the invention is as follows:
an ultraviolet reflection type double-optical path high-temperature optical machine comprises a high-temperature gas pool, an ultraviolet emission group, an ultraviolet receiving group, a laser emission/receiving group and a heating assembly; the ultraviolet emitting group, the ultraviolet receiving group and the laser emitting/receiving group are all positioned at the same side of the high-temperature gas tank, and a total reflection mirror is arranged at the other side of the high-temperature gas tank; the laser emission/receiving group is arranged at the central position of the end part of the high-temperature gas pool, the ultraviolet emission group and the ultraviolet receiving group are arranged at the outer side of the laser emission/receiving group through an outer box, and the ultraviolet emission group and the ultraviolet receiving group are obliquely arranged, so that emitted light and received light are symmetrically crossed on the mirror surface of the total reflector (orthogonal distribution is formed); the heating rod of the heating component is arranged on the outer surface of the high-temperature gas pool, and is externally coated with a heat-insulating sleeve.
The invention is further designed in that:
the ultraviolet emission group comprises a light source and a collimation group, and the light source comprises a deuterium lamp and a deuterium lamp holder; the collimating group collimates the divergent light emitted by the deuterium lamp into parallel light through the lens group and directly enters the high-temperature gas pool; the ultraviolet receiving group comprises a receiving lens group and a receiving lens seat and is used for converging and coupling ultraviolet parallel light which is emitted twice through the high-temperature gas cell after reflection into an optical fiber to be transmitted to the spectrometer.
The flange of the ultraviolet emission group is provided with a thread pair which can be finely adjusted, can be self-locked and can realize the adjustment, the positioning and the fixation of the ultraviolet emission group.
The device is also provided with a temperature sensor and a controller, wherein the temperature sensor is used for measuring the temperature of the high-temperature gas pool, and the heating rod and the temperature sensor are connected with a temperature controller.
And the high-temperature gas pool is provided with two through holes for the measured gas to enter and exit.
The laser transmitting/receiving set comprises a lens and a three-dimensional fine adjustment seat of a lens tube, and the lens tube are assembled on a cover plate at the end part of the high-temperature gas pool through a three-dimensional fine adjustment mechanism.
Two or more groups of heating rods of the heating assembly are arranged to uniformly heat the high-temperature gas pool.
The invention has the following technical effects:
1. according to the ultraviolet reflection type double-optical-path high-temperature optical machine, ultraviolet and laser can work simultaneously at 90 degrees without mutual interference, and simultaneous working of ultraviolet spectrum and laser double-optical-path of an analyzer is realized.
2. The invention simultaneously uses laser to measure the moisture content, solves the problems that the prior instrument works at normal temperature, the measured data is inaccurate due to the absorption and interference of water vapor, most instruments have no data or negative numbers especially when the concentration of ultra-low emission components is low, is particularly suitable for the working conditions of high temperature, high humidity and low emission, and accurately and truly reflects the concentration of components in the smoke in real time.
3. The invention can compensate and correct other components through water vapor measurement, and is well suitable for measurement and analysis of the current high-temperature high-humidity and ultralow-emission working conditions.
Drawings
Fig. 1 is a schematic structural diagram of an ultraviolet reflection type dual-optical path high-temperature optical mechanical assembly according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of the UV emitting array of the present invention;
FIG. 3 is a schematic structural diagram of the UV receiving set of the present invention;
FIG. 4 is a schematic structural view of an infrared laser transmitter/receiver assembly of the present invention;
FIG. 5 is a schematic view of a high temperature air cell stack according to the present invention.
In the figure: 101-ultraviolet emission group; 102-ultraviolet receiving group; 103 or 104 laser transmit/receive groups; 105-an outer box; 106-high temperature gas battery group; 201-deuterium lamp; 202-deuterium lamp base; 203-a collimating lens group; 301-a receiving lens group; 302-a receiver lens mount; 601-tank body; 602-a heating rod; 603-heat preservation and insulation sleeve.
Detailed Description
The invention is further described with reference to the accompanying drawings in which:
the first embodiment is as follows:
as shown in fig. 1, the present invention provides an ultraviolet reflective dual-optical path high temperature optical mechanical assembly, comprising: an ultraviolet emitting group 101, an ultraviolet receiving group 102, laser emitting/receiving groups (103, 104), an outer box 105, a high-temperature gas cell group 106 and the like.
The ultraviolet emitting group 101, the ultraviolet receiving group 102 and the laser emitting/receiving group are all positioned at the same side of the high-temperature gas tank 106, and a total reflection mirror is arranged at the other side of the high-temperature gas tank 106. The laser emission/receiving group is arranged at the central position of the end part of the high-temperature gas pool, the ultraviolet emission group 101 and the ultraviolet receiving group 102 are arranged at the outer side of the laser emission/receiving group through the outer box 105, and the ultraviolet emission group and the ultraviolet receiving group are arranged in a relatively inclined mode, so that emitted light and received light are symmetrically crossed on the mirror surface of the total reflection mirror to form orthogonal distribution. The ultraviolet light and the laser do not interfere with each other. The heating rod of the heating component is arranged on the outer surface of the high-temperature gas pool, and is externally coated with a heat-insulating sleeve for heating the gas pool.
As shown in fig. 2, the ultraviolet emission set includes a deuterium lamp 201, a deuterium lamp holder 202, and a collimator set 203. The deuterium lamp is fixed on the deuterium lamp transmitting seat through the flange seat, and the deuterium lamp transmitting seat is provided with the screw hole for fixing the deuterium lamp flange, so that the deuterium lamp can be accurately positioned, and the deuterium lamp can be guaranteed to work in the best state. The collimating lens group comprises a lens group and a lens frame and is used for collimating ultraviolet divergent light emitted by the deuterium lamp into parallel light; the lens group is composed of JGS1 and CAF2The two materials are optimally designed, and directly collimate the ultraviolet light output by the deuterium lamp, and then the collimated ultraviolet light enters the high-temperature gas pool in parallel.
As shown in fig. 3, the uv receiving assembly includes a receiving lens set 301, a receiving lens holder 302, and a screw head directly connected to the optical fiber. The ultraviolet receiving group converges and couples ultraviolet parallel light which is emitted by the high-temperature gas cell twice after reflection, and the ultraviolet parallel light enters the optical fiber to be transmitted to the spectrometer.
As shown in fig. 4, the laser emitting/receiving group consists of a lens, a lens tube and a three-dimensional micro-adjusting seat.
As shown in fig. 5, the high temperature gas pool set comprises a pool body 601 and a gas inlet/outlet pipe. The heating assembly includes a heating rod 602 and an insulating sleeve 603. The tank body 601 is made of 316 stainless steel with particularly good corrosion resistance and high-temperature strength, and the inner wall surface of the gas tank is smooth and flat after being finished and ground, so that the flow of gas can be measured and the surface adsorption can be reduced. The two through holes of the tank body are connected with the gas to be measured through the gas inlet pipe/gas outlet pipe.
Example two:
in order to realize the control of the temperature of the optical unit assembly, the device is also provided with a temperature sensor and a controller, the heating rod heats the high-temperature air pool, the temperature sensor is used for measuring the temperature of the high-temperature air pool, and the temperature controller is connected with the heating rod and the temperature sensor and used for implementing the heating control of the high-temperature air pool.
Example three:
in order to heat uniformly, four groups of heating rods of the heating assembly are uniformly arranged on the surface of the high-temperature gas pool and are wrapped by a heat-insulating sleeve for heat preservation.
Claims (7)
1. An ultraviolet reflection type double-optical path high-temperature optical machine comprises a high-temperature gas pool, an ultraviolet emission group and an ultraviolet receiving group, and is characterized in that: the laser emitting/receiving group and the heating assembly are also included; the ultraviolet emitting group, the ultraviolet receiving group and the laser emitting/receiving group are all positioned at the same side of the high-temperature gas tank, and a total reflection mirror is arranged at the other side of the high-temperature gas tank; the laser emission/receiving group is arranged at the central position of the end part of the high-temperature gas pool, the ultraviolet emission group and the ultraviolet receiving group are arranged at the outer side of the laser emission/receiving group through an outer box, and the ultraviolet emission group and the ultraviolet receiving group are obliquely arranged so that ultraviolet emission light and ultraviolet receiving light are symmetrically crossed on the mirror surface of the total reflector; the ultraviolet light and the laser light path are not interfered with each other, and the ultraviolet light and the laser light path simultaneously realize double-optical-path measurement; the heating rod of the heating component is arranged on the outer surface of the high-temperature gas pool, and is externally coated with a heat-insulating sleeve.
2. The ultraviolet reflective dual optical path high temperature optical bench of claim 1, further comprising: the ultraviolet emission group comprises a light source and a collimation group, and the light source comprises a deuterium lamp and a deuterium lamp holder; the collimating group collimates the divergent light emitted by the deuterium lamp into parallel light through the lens group and directly enters the high-temperature gas pool; the ultraviolet receiving group comprises a receiving lens group and a receiving lens seat and is used for converging and coupling ultraviolet parallel light which is emitted twice through the high-temperature gas cell after reflection into an optical fiber to be transmitted to the spectrometer.
3. The ultraviolet reflective dual optical path high temperature optical bench of claim 2, wherein: the flange of the ultraviolet emission group is provided with a thread pair which can be finely adjusted and is used for adjusting, positioning and fixing the ultraviolet emission group.
4. The ultraviolet reflective dual optical path high temperature optical bench of claim 1, 2 or 3, wherein: the device is also provided with a temperature sensor and a controller, wherein the temperature sensor is used for measuring the temperature of the high-temperature gas pool, and the heating rod and the temperature sensor are connected with a temperature controller.
5. The ultraviolet reflective dual optical path high temperature optical bench of claim 1, 2 or 3, wherein: and the high-temperature gas pool is provided with two through holes for the measured gas to enter and exit.
6. The ultraviolet reflective dual optical path high temperature optical bench of claim 5, further comprising: the laser transmitting/receiving set comprises a lens and a three-dimensional fine adjustment seat of a lens tube, and the lens tube are assembled on a cover plate at the end part of the high-temperature gas pool through a three-dimensional fine adjustment mechanism.
7. The ultraviolet reflective dual optical path high temperature optical bench of claim 5, further comprising: the heating rods of the heating assembly are arranged in four groups, are uniformly arranged on the surface of the high-temperature gas pool, and are wrapped by a heat-insulating sleeve for heat preservation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167930.4A CN108398396B (en) | 2018-02-28 | 2018-02-28 | Ultraviolet reflection type double-optical-path high-temperature optical-mechanical assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810167930.4A CN108398396B (en) | 2018-02-28 | 2018-02-28 | Ultraviolet reflection type double-optical-path high-temperature optical-mechanical assembly |
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| Publication Number | Publication Date |
|---|---|
| CN108398396A CN108398396A (en) | 2018-08-14 |
| CN108398396B true CN108398396B (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810167930.4A Active CN108398396B (en) | 2018-02-28 | 2018-02-28 | Ultraviolet reflection type double-optical-path high-temperature optical-mechanical assembly |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512757A (en) * | 1992-04-06 | 1996-04-30 | Rosemount Analytical, Inc. | Spectrophotometer and optical system therefor |
| CN203798723U (en) * | 2014-04-23 | 2014-08-27 | 南京国电环保科技有限公司 | Smoke concentration analysis meter optical-mechanical system with deuterium lamp fine adjustment mechanism |
| CN104483270A (en) * | 2014-12-19 | 2015-04-01 | 重庆川仪自动化股份有限公司 | Gas cell of ultraviolet differential analyzer |
| CN104568836A (en) * | 2015-01-26 | 2015-04-29 | 南京国电环保科技有限公司 | Low-concentration and multi-component gas detection method based on integration of multiple spectrum technologies |
| CN105067546A (en) * | 2015-08-21 | 2015-11-18 | 南京国电环保科技有限公司 | High-temperature multispectral coupling optical-mechanical system |
| CN106290209A (en) * | 2016-08-04 | 2017-01-04 | 安徽蓝盾光电子股份有限公司 | A kind of minimum discharge flue gas analyzer based on ultraviolet multiple reflections pool technology |
| CN206710299U (en) * | 2017-04-22 | 2017-12-05 | 杭州春来科技有限公司 | A kind of return gas compartment in former road based on ultraviolet difference absorption spectroscopy techniques |
| CN207007697U (en) * | 2017-07-06 | 2018-02-13 | 天津市圣威科技发展有限公司 | A kind of rectilinear motor-vehicle tail-gas remote sensing monitoring device |
-
2018
- 2018-02-28 CN CN201810167930.4A patent/CN108398396B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5512757A (en) * | 1992-04-06 | 1996-04-30 | Rosemount Analytical, Inc. | Spectrophotometer and optical system therefor |
| CN203798723U (en) * | 2014-04-23 | 2014-08-27 | 南京国电环保科技有限公司 | Smoke concentration analysis meter optical-mechanical system with deuterium lamp fine adjustment mechanism |
| CN104483270A (en) * | 2014-12-19 | 2015-04-01 | 重庆川仪自动化股份有限公司 | Gas cell of ultraviolet differential analyzer |
| CN104568836A (en) * | 2015-01-26 | 2015-04-29 | 南京国电环保科技有限公司 | Low-concentration and multi-component gas detection method based on integration of multiple spectrum technologies |
| CN105067546A (en) * | 2015-08-21 | 2015-11-18 | 南京国电环保科技有限公司 | High-temperature multispectral coupling optical-mechanical system |
| CN106290209A (en) * | 2016-08-04 | 2017-01-04 | 安徽蓝盾光电子股份有限公司 | A kind of minimum discharge flue gas analyzer based on ultraviolet multiple reflections pool technology |
| CN206710299U (en) * | 2017-04-22 | 2017-12-05 | 杭州春来科技有限公司 | A kind of return gas compartment in former road based on ultraviolet difference absorption spectroscopy techniques |
| CN207007697U (en) * | 2017-07-06 | 2018-02-13 | 天津市圣威科技发展有限公司 | A kind of rectilinear motor-vehicle tail-gas remote sensing monitoring device |
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