CN108152236A - A kind of gas cell of ultraviolet difference analyzer - Google Patents
A kind of gas cell of ultraviolet difference analyzer Download PDFInfo
- Publication number
- CN108152236A CN108152236A CN201711378677.9A CN201711378677A CN108152236A CN 108152236 A CN108152236 A CN 108152236A CN 201711378677 A CN201711378677 A CN 201711378677A CN 108152236 A CN108152236 A CN 108152236A
- Authority
- CN
- China
- Prior art keywords
- gas cell
- light
- concave mirror
- difference analyzer
- ultraviolet difference
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 239000000835 fiber Substances 0.000 claims description 7
- 238000007747 plating Methods 0.000 claims description 5
- 238000005536 corrosion prevention Methods 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 59
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 7
- 239000003546 flue gas Substances 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000011514 reflex Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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
- G01N21/33—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using ultraviolet light
Landscapes
- 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)
- Optical Measuring Cells (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses a kind of gas cells of ultraviolet difference analyzer, are related to gas analyzer technical field.The gas cell of the ultraviolet difference analyzer, the gas cell ontology including sealing；Gas cell ontology is equipped with light inlet and light-emitting window；Gas cell ontology is internally provided at least one side speculum；It reflects through speculum from the light that light inlet is injected and is projected at least once to light-emitting window.The gas cell of the ultraviolet difference analyzer of the present invention, by installing polygonal mirror in gas cell, makes light realize multiple reflections in gas cell, so as to increase light path, achievees the purpose that accurately to detect super low concentration flue gas.
Description
Technical field
The present invention relates to gas analysis technology field more particularly to a kind of gas cells of ultraviolet difference analyzer.
Background technology
In recent years, with the improvement of people's environmental awareness, enterprise is required to perform stringent want to the discharge of pollution sources
It asks.In order to which coal-burning power plant is coordinated to realize minimum discharge, higher requirement also proposed to the instrument that emission is monitored.It is super
Low emission refers to that coal fired boiler of power plant using the efficient cooperation-removal technology Based on Integrate System of multiple pollutant, makes its atmosphere pollution
Object concentration of emission substantially conforms to Gas Generator Set emission limit, i.e. sulfur dioxide is no more than 35mg/m3, nitrogen oxides is no more than
50mg/m3, flue dust be no more than 10mg/m3。
At present, ultraviolet difference monitoring device possessed by market largely cannot all meet monitoring super low concentration flue gas
Condition is usually present problems with：(1) gas cell light path is too short, when the amount that the gas concentration very low time is actually taken up by gas
Seldom, detector almost sense less than, thus monitor less than super low concentration flue gas；(2) light enters gas cell, easily occurs
More serious dispersion, leads to weak output signal, so as to monitor the flue gas less than super low concentration.
In consideration of it, it is improved it is necessary to the gas cell to existing ultraviolet difference analyzer is further.
Invention content
The technical problems to be solved by the invention are to provide a kind of ultraviolet difference for being capable of accurate measurements super low concentration flue gas
The gas cell of analyzer.The present invention provides a kind of gas cell of ultraviolet difference analyzer, including：The gas cell ontology of sealing；Gas
Body pond ontology is equipped with light inlet and light-emitting window；Gas cell ontology is internally provided at least one side speculum；It is injected by light inlet
Light through speculum reflect at least once after from light-emitting window project.
Further technical solution is for it：Speculum is concave mirror.
Further technical solution is for it：Concave mirror surface is equipped with gold coatings.
Further technical solution is for it：Concave mirror includes the first concave mirror, the second concave mirror and third concave mirror；
The light inlet, light-emitting window and the first concave mirror are located at one end of gas cell ontology, and the second concave mirror and third concave mirror are located at
The other end of gas cell ontology.
Specifically, by adjusting the angle between the second concave mirror and third concave mirror, it can make what is injected from light inlet
Light, to the first concave mirror, then through the first concave mirror to third concave mirror, then is reflected through third face through the second concave mirror
Mirror is reflected on the first surface launching mirror, after multiple reflections, is most projected afterwards through third concave mirror to the light-emitting window.
Further technical solution is for it：Light inlet and light-emitting window are standard fiber hickey, the standard fiber
Hickey is provided with for the fine adjustment screw of light regulating incident angle.
Further technical solution is for it：Light inlet is provided with planoconvex spotlight；Light-emitting window is provided with convex lens.
Further technical solution is for it：The radius of curvature phase of first concave mirror, the second concave mirror and third concave mirror
Together.
Further technical solution is for it：Gas cell ontology sets fenestrate mirror.
Further technical solution is for it：The surface of gas cell ontology is provided with fixed frame, the fixed frame and gas cell
Between be equipped with damping washer.
Further technical solution is for it：The inner surface of gas cell ontology is coated with corrosion prevention film.
Compared with prior art, the attainable technique effect of present invention institute includes：It is anti-by installing multi-panel in gas cell
Mirror is penetrated, light is made to realize multiple reflections in gas cell, so as to increase light path, achievees the purpose that accurately to detect super low concentration flue gas.
Using concave mirror as the preferred of speculum, be conducive to light convergence, be not susceptible to disperse.It is set at light inlet and light-emitting window
Fine adjustment screw is put, to offset the error of this body structure of pond body, the incident angle of light is can conveniently adjust using window mirror, makes light
Line is walked by preset path；Concave mirror surface gold-plating can effectively improve the reflectivity of light, make the optical signal received most strong.
Description of the drawings
Technical solution in order to illustrate the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present invention, for ability
For the those of ordinary skill of domain, without creative efforts, it can also be obtained according to these attached drawings other attached
Figure.
Fig. 1 is the gas cell structure chart of the ultraviolet difference analyzer of the embodiment of the present invention；
Fig. 2 is reflection path figure of the light in gas cell.
Reference numeral
Gas cell ontology 1, light inlet 2, light-emitting window 3, the first concave mirror 4, the second concave mirror 5, third concave mirror 6, fine tuning
Screw 7, window mirror 8, fixed frame 9, washer 10, the first sealing cover 11, the second sealing cover 12, air inlet 13, gas outlet 14, plano-convex
Lens 21, convex lens 31.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in embodiment is clearly and completely retouched
It states, similar reference numerals represent similar component in attached drawing.Obviously, will be described below embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
All other embodiments obtained under the premise of creative work are made, shall fall within the protection scope of the present invention.
It should be appreciated that ought use in this specification and in the appended claims, term " comprising " and "comprising" instruction
Described feature, entirety, step, operation, the presence of element and/or component, but be not precluded one or more of the other feature,
Entirety, step, operation, element, component and/or its presence or addition gathered.
It is also understood that in this embodiment of the present invention term used in the description merely for the sake of the specific reality of description
It applies the purpose of example and is not intended to limit the embodiment of the present invention.Such as in specification and appended book of the embodiment of the present invention
Used in as, other situations unless the context is clearly specified, otherwise " one " of singulative, "one" and "the"
It is intended to include plural form.
It is the gas cell of the ultraviolet difference analyzer shown in the embodiment of the present invention referring to Fig. 1 to 2, including：Sealing
Gas cell ontology 1；Gas cell ontology 1 is equipped with air inlet 13 and gas outlet 14；1 both ends of gas cell ontology are respectively by the first sealing
11 and second sealing cover 12 of lid is tightly connected；First sealing cover 11 is equipped with light inlet 2 and light-emitting window 3；Gas cell ontology 1
Internal one end is provided with the first concave mirror 4, and the other end is provided with the second concave mirror 5 and third concave mirror 6.
By the use of concave mirror as the preferred of speculum, help to converge light, prevent light from disperseing.By in gas cell
Polygonal mirror is installed, makes light more than enough secondary reflection of energy in gas cell, so as to increase light path, reaches accurate detection super low concentration
The purpose of flue gas.
First concave mirror 4, the second concave mirror 5 and 6 surface of third concave mirror are equipped with gold coatings.
Specifically, concave mirror surface gold-plating helps to improve the reflectivity of light, reduces loss of the light in reflection.
The radius of curvature of first concave mirror 4, the second concave mirror 5 and third concave mirror 6 is identical.
Specifically, there is same curvature radius can be effectively prevented light and disperse for concave mirror, so as to increase light letter
Number intensity.
Planoconvex spotlight 21 is provided in light inlet 2, incident light can be converged and be collimated；It is provided in light-emitting window 3 convex
Lens 31 can carry out light converging to light-emitting window 3 and project, to enhance optical signal.
Light inlet 2 and light-emitting window 3 are standard fiber hickey, and the standard fiber hickey, which is provided with, to be used for
The fine adjustment screw 7 of light regulating incident angle.
Specifically, the setting of each standard fiber hickey is there are six fine adjustment screw 7, can accurately light regulating
Incident angle makes light be reflected according to preset path.
Gas cell ontology 1 sets fenestrate mirror 8.
Specifically, window mirror 8 is arranged on the side of gas cell ontology 1, close to one end of the first sealing cover 11, when light is injected
When, the reflection path and order of reflection of light in gas cell can be seen by window mirror 8, in order to adjust the incident angle of light.
The surface of gas cell ontology 1 is provided with fixed frame 9, and damping washer is equipped between fixed frame 9 and gas cell ontology 1
10。
Specifically, fixed frame 9 is arranged on the lower surface of gas cell ontology 1, and there are four fixed frames 9, and fixed frame 9 passes through spiral shell
Nail is fixed with gas cell ontology 1, and damping washer 10 can reduce influence of the vibrations to gas cell, keep the steady of gas cell ontology 1
It is fixed, so as to ensure the precision of test.
The inner surface of gas cell ontology 1 is coated with corrosion prevention film.
Specifically, since tested gas has corrosivity, plating corrosion prevention film can be effectively prevent inside gas cell ontology 1
By gas attack, so as to extend the service life of gas cell.
Specifically, the first concave mirror 4 is pasted onto 11 inside of the first sealing cover；Second concave mirror 5 and third concave mirror 6 are viscous
It is attached to 12 inside of the second sealing cover.
Transmission path explanation of the light in gas cell：Light is transferred to light inlet 2 by optical fiber, through planoconvex spotlight 21 to entering
It penetrates light to carry out in collimated incident to gas cell on the second concave mirror 5, the first concave mirror 4 is reflexed to by the second concave mirror 5, then by
First concave mirror 4 reflexes to third concave mirror 6；Finally by third concave mirror 6 by light reflection to light-emitting window 6, planoconvex lens 31
After convergence, (not shown) at light receiver is transmitted light to.
In order to increase light path of the light in gas cell, adjustable angle between second concave mirror 5 and third concave mirror 6,
Light is enable to be reflected between the first concave mirror 4, the second concave mirror 5 and third concave mirror 6 repeatedly, finally by third concave mirror 6
At light reflection to light-emitting window 6, planoconvex lens 31 project after converging.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, is not described in some embodiment
Part, may refer to the associated description of other embodiment.
The above is the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or
It replaces, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with
Subject to scope of the claims.
Claims (10)
1. a kind of gas cell of ultraviolet difference analyzer, which is characterized in that including：The gas cell ontology of sealing；The gas cell
Ontology is equipped with light inlet and light-emitting window；The gas cell ontology is internally provided at least one side speculum, is injected by light inlet
Light through speculum reflect at least once after from light-emitting window project.
2. the gas cell of ultraviolet difference analyzer as described in claim 1, which is characterized in that the speculum is concave mirror.
3. the gas cell of ultraviolet difference analyzer as claimed in claim 2, which is characterized in that the concave mirror surface is equipped with plating
Gold plating.
4. the gas cell of ultraviolet difference analyzer as claimed in claim 3, which is characterized in that it is recessed that the concave mirror includes first
Face mirror, the second concave mirror and third concave mirror；The light inlet, light-emitting window and the first concave mirror are located at the one of gas cell ontology
End, the second concave mirror and third concave mirror are located at the other end of gas cell ontology.
5. the gas cell of ultraviolet difference analyzer as claimed in claim 4, which is characterized in that the light inlet and light-emitting window are equal
For standard fiber hickey, the standard fiber hickey is provided with for the fine adjustment screw of light regulating incident angle.
6. the gas cell of ultraviolet difference analyzer as claimed in claim 5, which is characterized in that the light inlet is provided with plano-convex
Lens；The light-emitting window is provided with convex lens.
7. the gas cell of ultraviolet difference analyzer as claimed in claim 6, which is characterized in that first concave mirror, second
The radius of curvature of concave mirror and third concave mirror is identical.
8. the gas cell of ultraviolet difference analyzer as claimed in claim 7, which is characterized in that the gas cell ontology is provided with
Window mirror.
9. the gas cell of ultraviolet difference analyzer as claimed in claim 8, which is characterized in that the surface of the gas cell ontology
Fixed frame is provided with, damping washer is equipped between the fixed frame and gas cell.
10. the gas cell of ultraviolet difference analyzer as claimed in claim 9, which is characterized in that the gas cell ontology it is interior
Surface is coated with corrosion prevention film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711378677.9A CN108152236A (en) | 2017-12-19 | 2017-12-19 | A kind of gas cell of ultraviolet difference analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711378677.9A CN108152236A (en) | 2017-12-19 | 2017-12-19 | A kind of gas cell of ultraviolet difference analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108152236A true CN108152236A (en) | 2018-06-12 |
Family
ID=62463963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711378677.9A Pending CN108152236A (en) | 2017-12-19 | 2017-12-19 | A kind of gas cell of ultraviolet difference analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108152236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117214097A (en) * | 2023-11-09 | 2023-12-12 | 朗思传感科技(深圳)有限公司 | Multiple reflection absorption tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699971A (en) * | 2004-10-16 | 2005-11-23 | 中国科学院安徽光学精密机械研究所 | Method and apparatus for adjustable multiple reflection optical absorption |
| 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 |
| CN205593914U (en) * | 2016-05-03 | 2016-09-21 | 青岛海纳光电环保有限公司 | Portable gaseous pollutants concentration detection device |
| 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 |
-
2017
- 2017-12-19 CN CN201711378677.9A patent/CN108152236A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1699971A (en) * | 2004-10-16 | 2005-11-23 | 中国科学院安徽光学精密机械研究所 | Method and apparatus for adjustable multiple reflection optical absorption |
| 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 |
| CN205593914U (en) * | 2016-05-03 | 2016-09-21 | 青岛海纳光电环保有限公司 | Portable gaseous pollutants concentration detection device |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| 杜旭日: "《大学物理实验教程》", 28 February 2016 * |
| 穆华荣: "《工业仪器维护》", 31 July 2000 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117214097A (en) * | 2023-11-09 | 2023-12-12 | 朗思传感科技(深圳)有限公司 | Multiple reflection absorption tank |
| CN117214097B (en) * | 2023-11-09 | 2024-02-20 | 朗思传感科技(深圳)有限公司 | Multiple reflection absorption tank |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180612 |