CN106018276A - Optical absorption cell - Google Patents
Optical absorption cell Download PDFInfo
- Publication number
- CN106018276A CN106018276A CN201610522536.9A CN201610522536A CN106018276A CN 106018276 A CN106018276 A CN 106018276A CN 201610522536 A CN201610522536 A CN 201610522536A CN 106018276 A CN106018276 A CN 106018276A
- Authority
- CN
- China
- Prior art keywords
- optical
- optical absorption
- housing
- absorption pond
- mounting seat
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 77
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 39
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000005259 measurement Methods 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 8
- 229910052724 xenon Inorganic materials 0.000 description 5
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001658 differential optical absorption spectrophotometry Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 210000003462 vein Anatomy 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
- G01N21/01—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
- 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)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention discloses an optical absorption cell. The optical absorption cell comprises a reflector, a sample inlet and an outlet. A chamber is defined from the side to the bottom of a shell, and a top cover is installed on the top of the shell to seal the chamber; the reflector is fixed to an installation base, and the installation base is installed on the bottom of the shell through a fixing screw and located on one side in the chamber; a first optical channel is arranged on the side portion, opposite to the reflection surface of the reflection, of the shell, an L-shaped connector is installed on the side, provided with the first optical channel, of the shell, and a light source is fixed to the L-shaped connector; a second optical channel is arranged on the side portion, opposite to the reflection surface of the reflector, of the shell, and measurement light emitted by the light source is reflected by the reflector, then penetrates through the second optical channel, and finally enters an optical transmission medium. The optical absorption cell has the advantages of being simple in structure, convenient to maintain and the like.
Description
Technical field
The present invention relates to optical detection, particularly relate to optical absorption pond.
Background technology
Along with surrounding air is caused seriously by the discharge of the acceleration of China's process of industrialization, harmful gas and flue dust
Polluting, human health, surrounding air gaseous contaminant (SO in air pollution serious threat2、NO2、O3、
CO) monitoring is the most very urgent.Traditional flue gas analysis ultraviolet difference absorption spectrum (DOAS) system can be same
Time detection SO2、NO2、O3Deng there being the gas of characteristic absorpting spectrum at ultraviolet band, in order to from spatially the most not
With the ultraviolet light of absorption bands, generally use light-dividing device light splitting, but the resolution of the light-dividing device of routine, spirit
Sensitivity is not enough, reduces analysis precision.
Summary of the invention
In order to solve the deficiencies in the prior art, the invention provides a kind of high-resolution, high sensitivity,
The optical absorption pond that ultraviolet band responds.
The goal of the invention of the present invention is achieved by the following technical programs:
A kind of optical absorption pond, described optical absorption pond includes reflecting mirror, sample inlet and outlet；Described optics
Absorption cell farther includes:
Housing, described housing surrounds chamber from sidepiece and bottom；
Top cover, described top cover is arranged on the top of described housing, closes described chamber；
Mounting seat, described reflecting mirror is fixed in described mounting seat, and described mounting seat is arranged on by fixing screw
In described chamber on the housing bottom of side；
First optical channel, described first optical channel is arranged on the housing relative with described mirror reflection surface
On sidepiece, " L " type connector is arranged on the housing of the first optical channel side, and light source is fixed on described " L "
On type connector；
Second optical channel, described second optical channel is arranged on the housing relative with described mirror reflection surface
On sidepiece, the measurement light that described light source sends passes described second optical channel after being reflected by described reflecting mirror, enters
Enter in optical transmission medium.
According to above-mentioned optical absorption pond, alternatively, install in described first optical channel and assemble parts, described
Light source is arranged on the described first focal point assembling parts.
According to above-mentioned optical absorption pond, it is preferable that described " L " type connector is separately fixed at by screw
On two sidepieces of described housing.
According to above-mentioned optical absorption pond, alternatively, described mounting seat is arranged to transparent window film, described reflection
The space of closing is surrounded, after being reflected by a reflector through the measurement light of described transparent window film between mirror and transparent window film
Again pass through described transparent window film.
According to above-mentioned optical absorption pond, alternatively, install in described second optical channel and assemble parts, reflection
Light is coupled into described optical transmission medium after these convergence parts.
According to above-mentioned optical absorption pond, alternatively, described optical transmission medium is fixed on by square adpting flange
The sidepiece of described housing.
According to above-mentioned optical absorption pond, it is preferable that be suitable in described mounting seat that described fixing screw passes is logical
The aperture in hole is more than the external diameter of described fixing screw.
According to above-mentioned optical absorption pond, alternatively, described optical absorption pond farther includes:
Mark closely, described mounting seat has screwed hole, mark closely and there is the external screw thread mated with this screwed hole, described
Mark closely through described screwed hole the bottom surface that props up described housing.
According to above-mentioned optical absorption pond, alternatively, the bottom of described mounting seat has projection.
Compared with prior art, the method have the advantages that
1. concave mirror need not change, and only needs wiping transparent window film after pollution；
2. just can control emergent light direction and angle by the fixing screw of regulation very easily with marking closely；
3. the structure (by marking closely) of flange and fibre-optical splice can well regulate position and the angle of optical fiber；
4. the volume within absorption cell is the least, improves response speed.
Accompanying drawing explanation
Referring to the drawings, the disclosure will be easier to understand.Skilled addressee readily understands that
: these accompanying drawings are used only for illustrating technical scheme, and are not intended to the present invention's
Protection domain is construed as limiting.In figure:
Fig. 1 is the structure diagram in the optical absorption pond of the embodiment of the present invention 1；
Fig. 2 is the structure diagram of the mounting seat of the embodiment of the present invention 1；
Fig. 3 is the diagrammatic cross-sectional view in the optical absorption pond of the embodiment of the present invention 2.
Detailed description of the invention
Fig. 1-3 and following description describe the optional embodiment of the present invention with teaching those skilled in the art such as
What is implemented and reproduces the present invention.In order to instruct technical solution of the present invention, simplify or eliminate some routine sides
Face.Those skilled in the art should understand that and be derived from the modification of these embodiments or replace the model in the present invention
In enclosing.Those skilled in the art should understand that following characteristics can combine to form the present invention's in every way
Multiple modification.Thus, the invention is not limited in following optional embodiment, and only by claim and it
Equivalent limit.
Embodiment 1:
Fig. 1 schematically illustrates the structure diagram in a kind of optical absorption pond of the embodiment of the present invention, such as Fig. 1 institute
Showing, described optical absorption pond includes:
Housing 1, described housing surrounds chamber from sidepiece and bottom, and housing has sample inlet and outlet；
Top cover, described top cover is arranged on the top of described housing, closes described chamber；
Fig. 2 schematically illustrates the structure diagram of the mounting seat of the embodiment of the present invention, as in figure 2 it is shown, described
The aperture being suitable to the through hole 22 that fixing screw 12 passes in mounting seat 8 is more than the external diameter of described fixing screw, makes
Described mounting seat is arranged in described chamber on the housing bottom of side by fixing screw, in installation process
Mounting seat can move a little relative to housing；There is in described mounting seat screwed hole 21, mark closely 11 and have and be somebody's turn to do
The external screw thread of screwed hole coupling, described in mark closely through described screwed hole the bottom surface that props up described housing；By turning
The regulation mounting seat angle relative to housing bottom surface is marked closely described in Dong.Reflecting mirror, transparent window film are fixed on described peace
On dress seat, surround the space of closing between described reflecting mirror and transparent window film, through the measurement of described transparent window film
Light again passes through described transparent window film after being reflected by a reflector.The bottom of described mounting seat has protruding 81.
First optical channel, described first optical channel is arranged on the housing relative with described mirror reflection surface
On sidepiece, " L " type connector is separately fixed at two sidepieces of the housing of the first optical channel side by screw
On, light source is fixed on described " L " type connector；Install in described first optical channel and assemble parts, institute
State light source and be arranged on the described first focal point assembling parts.
Second optical channel, described second optical channel is arranged on the housing relative with described mirror reflection surface
On sidepiece, the measurement light through " L " type connector that described light source sends passes after being reflected by described reflecting mirror
Described second optical channel, enters in optical transmission medium.Install in described second optical channel and assemble parts, instead
Penetrate light and be coupled into described optical transmission medium after these convergence parts.Described optical transmission medium 17 is by square company
Acting flange 13 is fixed on the sidepiece of described housing.
The regulative mode in above-mentioned optical absorption pond is:
Bottom mounting seat being fixed in housing by fixing screw, but not fix tightly；Mark closely through screwed hole
And prop up the bottom surface of housing；All around move described mounting seat so that reflection light enters in the second optical channel；
Rotation is marked closely, thus adjusts the reflecting mirror angle relative to housing bottom surface.
Embodiment 2:
The optical absorption pond according to present invention application examples in continuous flue gas monitoring.
As it is shown on figure 3, in this application examples, one end of gas compartment 1 is light source pulse xenon lamp 2 and optical fiber 17
Receiving terminal, the other end is a concave mirror 9, and workflow is so, and xenon flash lamp 2 is by L-type even
Connect support 4 and be fixed on gas compartment 1, have three fixing screws 5 to connect, the gas compartment 1 that xenon flash lamp 2 connects
One end groove in mounted lens 7-1, lens two ends have O 3-1,3-2 to seal and protect, thoroughly
Mirror 7-1 has a pressure ring 6-1 for compressing lens near the side of light source, lens 7-1 center position arteries and veins
Rush the focal length that xenon lamp 2 position is lens 7-1, make the emergent light of xenon flash lamp 2 collimate, optical fiber 17 1
Having a lens 7-2 equally in gas compartment 1 groove of end, be used for converging reflection light, lens 7-2 two ends are the most all
Being sealed by O 3-3,3-4 and protect, one, outside pressure ring 6-2 compresses lens, in gas compartment 1
One end of concave mirror 9 is placed in portion, has a mounting seat 8, and concave mirror 9 is arranged in mounting seat 8,
Concave mirror mirror 9 above has a quartz glass 10 to carry out proofing dust and protecting, has an O before window
3-5 and pressure ring 6-3, compresses and protects concave mirror 8 the most contaminated with sealing quartz glass 10, installs
Seat 8 carries out position by 2 fixing screws 12 to be fixed, and controls the general direction of reflection light outgoing, it is also possible to
Mark closely 11 by regulation and calibrate the reflection angle of light and positions further, so that hot spot outgoing is to lens 7-2
Center, optical fiber 17 is connected on a fibre-optical splice 15, is then connected to gas by a square flange 13
On the groove of body room 1, screw 16 connecting, the four direction at square flange is respectively arranged with one and marks closely 14 and adjust
The position of whole fibre-optical splice 15, makes emergent light coupled into optical fibres 17 as far as possible.
Claims (9)
1. an optical absorption pond, described optical absorption pond includes reflecting mirror, sample inlet and outlet；It is special
Levy and be: described optical absorption pond farther includes:
Housing, described housing surrounds chamber from sidepiece and bottom；
Top cover, described top cover is arranged on the top of described housing, closes described chamber；
Mounting seat, described reflecting mirror is fixed in described mounting seat, and described mounting seat is arranged on by fixing screw
In described chamber on the housing bottom of side；
First optical channel, described first optical channel is arranged on the housing relative with described mirror reflection surface
On sidepiece, " L " type connector is arranged on the housing of the first optical channel side, and light source is fixed on described " L "
On type connector；
Second optical channel, described second optical channel is arranged on the housing relative with described mirror reflection surface
On sidepiece, the measurement light that described light source sends passes described second optical channel after being reflected by described reflecting mirror, enters
Enter in optical transmission medium.
Optical absorption pond the most according to claim 1, it is characterised in that: in described first optical channel
Installing and assemble parts, described light source is arranged on the described first focal point assembling parts.
Optical absorption pond the most according to claim 1, it is characterised in that: described " L " type connector leads to
Cross screw to be separately fixed on two sidepieces of described housing.
Optical absorption pond the most according to claim 1, it is characterised in that: it is right to arrange in described mounting seat
Transparent window film, surrounds the space of closing between described reflecting mirror and transparent window film, through the survey of described transparent window film
Amount light again passes through described transparent window film after being reflected by a reflector.
Optical absorption pond the most according to claim 1, it is characterised in that: in described second optical channel
Installing and assemble parts, reflection light is coupled into described optical transmission medium after these convergence parts.
Optical absorption pond the most according to claim 5, it is characterised in that: described optical transmission medium passes through
Square adpting flange is fixed on the sidepiece of described housing.
Optical absorption pond the most according to claim 1, it is characterised in that: be suitable to institute in described mounting seat
State the aperture external diameter more than described fixing screw of the through hole that fixing screw passes.
Optical absorption pond the most according to claim 7, it is characterised in that: described optical absorption pond enters one
Step includes:
Mark closely, described mounting seat has screwed hole, mark closely and there is the external screw thread mated with this screwed hole, described
Mark closely through described screwed hole the bottom surface that props up described housing.
Optical absorption pond the most according to claim 8, it is characterised in that: the bottom tool of described mounting seat
There is projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610522536.9A CN106018276A (en) | 2016-06-30 | 2016-06-30 | Optical absorption cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610522536.9A CN106018276A (en) | 2016-06-30 | 2016-06-30 | Optical absorption cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106018276A true CN106018276A (en) | 2016-10-12 |
Family
ID=57106565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610522536.9A Pending CN106018276A (en) | 2016-06-30 | 2016-06-30 | Optical absorption cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106018276A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421891A (en) * | 2017-06-07 | 2017-12-01 | 上海禾赛光电科技有限公司 | Maurice Herriott pond and its adjustment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278472A (en) * | 2013-05-08 | 2013-09-04 | 南京顺泰科技有限公司 | Fourier infrared spectrometer and sample gas absorption cell |
| 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 |
| CN205826508U (en) * | 2016-06-30 | 2016-12-21 | 杭州泽天科技有限公司 | Optical absorption pond |
-
2016
- 2016-06-30 CN CN201610522536.9A patent/CN106018276A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103278472A (en) * | 2013-05-08 | 2013-09-04 | 南京顺泰科技有限公司 | Fourier infrared spectrometer and sample gas absorption cell |
| 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 |
| CN205826508U (en) * | 2016-06-30 | 2016-12-21 | 杭州泽天科技有限公司 | Optical absorption pond |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421891A (en) * | 2017-06-07 | 2017-12-01 | 上海禾赛光电科技有限公司 | Maurice Herriott pond and its adjustment method |
| CN107421891B (en) * | 2017-06-07 | 2023-10-03 | 上海禾赛科技有限公司 | Huriott pool and debugging method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20161012 |