CN108072612A - A kind of compact variable light path gas sample cell - Google Patents
A kind of compact variable light path gas sample cell Download PDFInfo
- Publication number
- CN108072612A CN108072612A CN201610974012.3A CN201610974012A CN108072612A CN 108072612 A CN108072612 A CN 108072612A CN 201610974012 A CN201610974012 A CN 201610974012A CN 108072612 A CN108072612 A CN 108072612A
- Authority
- CN
- China
- Prior art keywords
- light path
- sample cell
- gas sample
- variable light
- gas
- 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
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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
- G01N21/03—Cuvette constructions
- G01N21/0303—Optical path conditioning in cuvettes, e.g. windows; adapted optical elements or systems; path modifying or adjustment
Abstract
The present invention provides a kind of compact variable light path gas sample cells.Belong to super low concentration gaseous spectrum detection field.It solves and requires powerful light source, open unobstructed place when carrying out spectral detection to super low concentration gas, while the problem that weather disturbing factor is more, stray light is complicated, testing result error is big.The solution that the present invention uses is：By dismountable block combiner into sample cell.These module convenience in transport, can detection Assembling, and can according to detection need light path is changed by swap modules quantity.The compact variable light path gas sample cell that the present invention describes is suitable for the live on-line checking of super low concentration gas.
Description
Technical field
The present invention relates to a kind of compact variable light path gas sample cell, suitable for the live in linear light of super low concentration gas
Spectrum detection.
Background technology
At present, spectrum detection technique is widely used in the detection of gas concentration.Gas sample cell is to carry out gaseous spectrum inspection
The important component of survey.The light path that the concentration of gas is lower to require sample cell is longer, and the pollutant in air is relatively low to carry out
Its sample cell light path is needed up to tens of rice during spectral detection.It can reach so long currently without any gas sample cell
Light path, general way are to realize that long optical distance spectrum detects in open atmospheric environment using telescope and speculum.It is this
Way requires powerful light source, open unobstructed place, while weather disturbing factor is more, external stray light is complicated, detection
Resultant error is big.These reasons make the online spectral detection in the scene of pollutants in air be difficult to extensive use.
The content of the invention
In order to enable the online spectral detection extensive use in the scene of pollutants in air, the present invention provides a kind of compact
Type variable light path gas sample cell.The sample cell can be increased module number, be obtained foot as needed by dismountable module composition
Enough long light paths.Module it is compact to design can on-site consolidation, to use environment, place without particular/special requirement.
Scheme is used by the present invention solves its technical problem：Entire gas sample cell is by three kinds of module on-site consolidation groups
Into optical path length as needed takes the module of respective numbers.Three kinds of modules are respectively interface module 1, expansion module
2, expansion module 3.Each sample cell includes two interface modules 1, is respectively used to air inlet, incident light and outlet, emergent light.Two
Several expansion modules 2 and expansion module 3 are connected between interface module 1.Reach change in the quantity laterally across swap modules 2
The purpose of light path can complete turning back for light path after lateral dimension reaches the limitation by module 3, realize Longitudinal Extension, light path folding
It can continue to expand light path by increasing module 2 in breadth wise dimension after returning, so make sample cell compact overall structure.
In interface module 1,4 be SMA905 optical fiber interfaces, is penetrated or the output optical fiber for accessing；5 be venthole, under test gas
Module is flowed in or out from here；6 be the lens of JGS2 materials, and the light of incident optical becomes directional light after the lens, and
Directional light focuses on after the lens is coupled to the output optical fiber；7 be total reflection prism, and the light to come from lens passes through the total reflection
Light path bends an angle of 90 degrees after prism；8 be thang-kng venthole, in link block, the thang-kng venthole of disparate modules to just interconnecting,
And there is seal washer prevent leakage gas in the junction in hole, while can clean prism by the hole, realize module exempt to disassemble it is clear
It washes.
In expansion module 2, the total reflection prism containing two pieces with 7 similary specifications in module 1, the upper and lower end 2 respectively has
One with the thang-kng venthole 8 of same size in module 1, and can realize the repertoire of the thang-kng venthole in module 1.
In expansion module 3, containing one piece of total reflection prism, two in module 18 with size thang-kng venthole.
The beneficial effects of the invention are as follows：The gas sample cell can be built by module scene, convenience in transport；In a limited space
Interior realization overlength light path, solving needs open area, weather disturbing factor more, extraneous when carrying out spectral detection to gas in the past
The problems such as stray light complexity；The light path of the gas sample cell can change according to actual needs, solve gas with various or different dense
Degree gas has light path the problem of different demands.
Description of the drawings
Fig. 1 is the schematic diagram of compact variable light path gas sample cell.
Fig. 2 is the engineering three-view diagram of module 1.
Fig. 3 is the engineering three-view diagram of module 2.
Fig. 4 is the engineering three-view diagram of module 3.
Claims (2)
1. a kind of compact variable light path gas sample cell carries out light path folding using reflective optical devices such as speculums, special
Sign is：The gas sample cell use modular form, can on-site consolidation composition, can be needed to adjust by swap modules according to detection
Whole light path.
2. compact variable light path gas sample cell according to claim 1, it is characterized in that：Each module contains thang-kng, leads to
The dual-purpose hole 8 of gas, the hole are used for cleaning optical element simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610974012.3A CN108072612A (en) | 2016-11-07 | 2016-11-07 | A kind of compact variable light path gas sample cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610974012.3A CN108072612A (en) | 2016-11-07 | 2016-11-07 | A kind of compact variable light path gas sample cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108072612A true CN108072612A (en) | 2018-05-25 |
Family
ID=62153868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610974012.3A Pending CN108072612A (en) | 2016-11-07 | 2016-11-07 | A kind of compact variable light path gas sample cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108072612A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187397A (en) * | 2018-11-07 | 2019-01-11 | 上海安杰环保科技股份有限公司 | A kind of extinction pipe and the gas phase molecular absorption spectrometer containing the extinction pipe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62265553A (en) * | 1986-05-13 | 1987-11-18 | Fujitsu Ltd | Gas detector |
| CN201876411U (en) * | 2010-11-16 | 2011-06-22 | 安徽皖仪科技股份有限公司 | Long-optical path air chamber device |
| CN102486572A (en) * | 2010-12-06 | 2012-06-06 | 中国科学院西安光学精密机械研究所 | Method and device for implementing multiple light paths |
| CN103398950A (en) * | 2013-08-20 | 2013-11-20 | 天津亿利科能源科技发展股份有限公司 | Array-type multi-optical-path system for gas-phase monitoring |
| CN204461993U (en) * | 2015-01-27 | 2015-07-08 | 安徽宝龙环保科技有限公司 | A kind of gas absorption cell |
| CN205317651U (en) * | 2016-01-11 | 2016-06-15 | 华北电力大学（保定） | Portable long path cell |
| CN105842167A (en) * | 2016-04-21 | 2016-08-10 | 青岛海纳光电环保有限公司 | Optical path adjustable gas-absorbing pool |
-
2016
- 2016-11-07 CN CN201610974012.3A patent/CN108072612A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62265553A (en) * | 1986-05-13 | 1987-11-18 | Fujitsu Ltd | Gas detector |
| CN201876411U (en) * | 2010-11-16 | 2011-06-22 | 安徽皖仪科技股份有限公司 | Long-optical path air chamber device |
| CN102486572A (en) * | 2010-12-06 | 2012-06-06 | 中国科学院西安光学精密机械研究所 | Method and device for implementing multiple light paths |
| CN103398950A (en) * | 2013-08-20 | 2013-11-20 | 天津亿利科能源科技发展股份有限公司 | Array-type multi-optical-path system for gas-phase monitoring |
| CN204461993U (en) * | 2015-01-27 | 2015-07-08 | 安徽宝龙环保科技有限公司 | A kind of gas absorption cell |
| CN205317651U (en) * | 2016-01-11 | 2016-06-15 | 华北电力大学（保定） | Portable long path cell |
| CN105842167A (en) * | 2016-04-21 | 2016-08-10 | 青岛海纳光电环保有限公司 | Optical path adjustable gas-absorbing pool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109187397A (en) * | 2018-11-07 | 2019-01-11 | 上海安杰环保科技股份有限公司 | A kind of extinction pipe and the gas phase molecular absorption spectrometer containing the extinction pipe |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180525 |