CN201876411U - Long-optical path air chamber device - Google Patents
Long-optical path air chamber device Download PDFInfo
- Publication number
- CN201876411U CN201876411U CN2010206122014U CN201020612201U CN201876411U CN 201876411 U CN201876411 U CN 201876411U CN 2010206122014 U CN2010206122014 U CN 2010206122014U CN 201020612201 U CN201020612201 U CN 201020612201U CN 201876411 U CN201876411 U CN 201876411U
- Authority
- CN
- China
- Prior art keywords
- air chamber
- light path
- gas
- long
- optical fiber
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a long-optical path air chamber device comprising a plurality of air chambers, the air chambers are connected in series through an optical fiber, and the adjacent two air chambers are communicated through a windpipe. By adopting the scheme, a large air chamber difficult for debugging, large in volume, and low in light-pass rate is divided into a plurality of short air chambers small in volume, easy for assembly, convenient for debugging and high in light-pass rate.
Description
Technical field
The utility model relates to optics air chamber field, is specially a kind of long light path gas cell device.
Background technology
Along with Increase of population and expanding economy, China is being faced with very serious environmental pollution problem.The development analytical instrument of monitoring of environmental gas in real time is significant to improving existent environment of people.Because the dusty gas of required monitoring mostly is the low concentration material that is lower than ppm magnitude and even ppb magnitude,, the optical system of design just can reach the accuracy of detection requirement so must having sufficiently long optical length.So the development of long light path gas device is the key and the difficult point place of total system.
And the long light path gas cell that present stage adopts mainly is made up of pedestal, pond body, window, gas inlet and outlet connectors and switch, catoptron.The pond susceptor body is installed in the infrared spectrum detecting instrument all in the sample bin by the collimating mirror pilot pin.Basic functional principle: gas to be measured enters gas cell through gas feed, is discharged by outlet.Treat that original gas is discharged fully in the pond, when the inside and outside gas concentration to be measured in pond reaches unanimity, close the gas inlet and outlet switch.Infrared light enters the pond body through window, infrared radiation is absorbed after gas to be measured fully absorbs in the pond, through a narrow band pass filter filtering, purpose is the infrared amount filtering outside the gas characteristic absorption peak to be measured, only stay that part of energy that can reflect the spectral light Strength Changes, received by infrared eye.As follows according to certain gas of Beer-Lambert law situation to the incident light absorption in the finite concentration scope:
I’＝I
0e
-LCK
I
0The initial light intensity of gas to be measured is incided in expression, and L represents the thickness of gas, and promptly infrared radiation is through absorbing the distance of gas, and K represents absorption coefficient to be measured, and C represents the concentration of gas to be measured
The gas cell of variable light path is to change in the body of pond all by revolving to sweep that the catoptron direction realizes changing light path on body top, pond by the user.And this long light path gas cell is along with the increase of optical path length, and the logical optical efficiency of air chamber is difficult to calibration and detects, and concrete light path is difficult to mensuration directly perceived, the machining precision height, and temperature influence is big.
The utility model content
The purpose of this utility model provides a kind of long light path gas cell device, is difficult to calibration and detects the problem that light path is difficult to measure with the logical optical efficiency of long light path air chamber that solves prior art.
In order to achieve the above object, the technical scheme that the utility model adopted is:
A kind of long light path gas cell device, include air chamber, it is characterized in that: described air chamber has a plurality of, a plurality of air chambers are by the end to end formation cascaded structure of optical fiber, first air chamber is communicated with draft tube in the described cascaded structure, last air chamber is communicated with escape pipe, communicates with each other by tracheae between two adjacent air chamber head and the tail.
Described a kind of long light path gas cell device, it is characterized in that: in the described cascaded structure, first air chamber is connected to incident optical, and last air chamber is connected to outgoing optical fiber.
The utility model is made up of a plurality of air chambers, is connected by optical fiber between the 2 air chambers, and many group series connection form long light path.Gas circuit is to be connected by tracheae between 2 air chambers, organizes tracheae series connection formation gas circuit flow cell between air chamber more.
The utility model has the advantages that:
The utility model is not easy debugging single, and volume is big, and the logical low atmospheric air chamber of optical efficiency resolves into that a plurality of volumes are little, assembling is simple, debugging is convenient, the logical high chamber of losing heart of optical efficiency.Simultaneously, reduced cost, and the length of light path also can very easily calculate out, can not have the situation of multipath.
Description of drawings
Fig. 1 is the utility model light path principle figure.
Embodiment
As shown in Figure 1.A kind of long light path gas cell device, include air chamber 3, air chamber 3 has a plurality of, a plurality of air chambers are by optical fiber 5 end to end formation cascaded structures, first air chamber 3-1 is communicated with draft tube in the cascaded structure, last air chamber 3-2 is communicated with escape pipe, communicates with each other by tracheae 4 between two adjacent air chamber head and the tail.In the cascaded structure, first air chamber 3-1 is connected to incident optical 2, and last air chamber 3-2 is connected to outgoing optical fiber 6.
At first, assemble single air chamber, by detecting the method for its transmitance, adjustment is to optimum condition.Each air chamber all adjustment good after, be linked in sequence with optical fiber.
During work, light source 1 sends broadband spectral, is coupled to air chamber through incident optical 2.The fairing preface is passed into the gas absorption to be measured in the air chamber by each air chamber, converges to outgoing optical fiber 6, and it is detected finally to arrive spectral detection instrument 7.
Claims (2)
1. one kind long light path gas cell device, include air chamber, it is characterized in that: described air chamber has a plurality of, a plurality of air chambers are by the end to end formation cascaded structure of optical fiber, first air chamber is communicated with draft tube in the described cascaded structure, last air chamber is communicated with escape pipe, communicates with each other by tracheae between two adjacent air chamber head and the tail.
2. a kind of long light path gas cell device according to claim 1, it is characterized in that: in the described cascaded structure, first air chamber is connected to incident optical, and last air chamber is connected to outgoing optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206122014U CN201876411U (en) | 2010-11-16 | 2010-11-16 | Long-optical path air chamber device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206122014U CN201876411U (en) | 2010-11-16 | 2010-11-16 | Long-optical path air chamber device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201876411U true CN201876411U (en) | 2011-06-22 |
Family
ID=44164327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206122014U Expired - Lifetime CN201876411U (en) | 2010-11-16 | 2010-11-16 | Long-optical path air chamber device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201876411U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507498A (en) * | 2011-10-24 | 2012-06-20 | 兖矿集团有限公司 | Measurement range enlarging use method of gas tester and corresponding novel gas tester |
| CN107421897A (en) * | 2017-06-13 | 2017-12-01 | 上海森谱科技有限公司 | A kind of single light source double suction receives pond gas phase molecular absorption spectrometer |
| CN108007885A (en) * | 2017-12-21 | 2018-05-08 | 苏州汉策能源设备有限公司 | A kind of light path can expand formula and use pattern gas pond |
| CN108072612A (en) * | 2016-11-07 | 2018-05-25 | 云南师范大学 | A kind of compact variable light path gas sample cell |
| CN108169144A (en) * | 2016-12-07 | 2018-06-15 | 云南师范大学 | A kind of variable light path gas sampler based on optical fiber |
| 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 |
| CN109883973A (en) * | 2018-06-01 | 2019-06-14 | 南京安荣信电子科技有限公司 | A kind of ultraviolet flue gas analyzer of total space coupling optical path |
| CN111157474A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Compact gas detector |
-
2010
- 2010-11-16 CN CN2010206122014U patent/CN201876411U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102507498A (en) * | 2011-10-24 | 2012-06-20 | 兖矿集团有限公司 | Measurement range enlarging use method of gas tester and corresponding novel gas tester |
| CN102507498B (en) * | 2011-10-24 | 2013-08-07 | 兖矿集团有限公司 | Measurement range enlarging use method of gas tester and corresponding novel gas tester |
| CN108072612A (en) * | 2016-11-07 | 2018-05-25 | 云南师范大学 | A kind of compact variable light path gas sample cell |
| CN108169144A (en) * | 2016-12-07 | 2018-06-15 | 云南师范大学 | A kind of variable light path gas sampler based on optical fiber |
| CN107421897A (en) * | 2017-06-13 | 2017-12-01 | 上海森谱科技有限公司 | A kind of single light source double suction receives pond gas phase molecular absorption spectrometer |
| CN108007885A (en) * | 2017-12-21 | 2018-05-08 | 苏州汉策能源设备有限公司 | A kind of light path can expand formula and use pattern gas pond |
| CN109883973A (en) * | 2018-06-01 | 2019-06-14 | 南京安荣信电子科技有限公司 | A kind of ultraviolet flue gas analyzer of total space coupling optical path |
| 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 |
| CN111157474A (en) * | 2018-11-08 | 2020-05-15 | 中国石油化工股份有限公司 | Compact gas detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201876411U (en) | Long-optical path air chamber device | |
| CN100590418C (en) | Carbon dioxide gas analyzer and analysis method thereof | |
| CN102998061B (en) | A kind of diffusion type SF6 Leakage Gas monitoring device and method | |
| CN103017991B (en) | Suction type SF6 gas leakage monitoring method | |
| CN101526472B (en) | Intelligent ultraviolet gas analyzer | |
| CN205484030U (en) | Based on ultraviolet absorption spectrum H2S and SO2 mist density adjusting wavelength measuring device | |
| CN102252991A (en) | Ultraviolet differential flue gas concentration monitoring system through heat and moisture extraction process | |
| CN202916049U (en) | Diffusion-type SF6 gas leakage monitoring device | |
| CN104266971B (en) | The original position caliberating device of pipeline gas on-line checking and method thereof | |
| CN106290208A (en) | A kind of ozone concentration determinator | |
| CN202916062U (en) | Suction-type SF6 gas leakage monitoring device | |
| CN201788149U (en) | Light scattering type particulate matter on-line monitor with humidity correcting function | |
| CN202305402U (en) | Infrared gas analyzer | |
| CN102721662A (en) | Mining infrared gas sensor with high efficiency of light sources | |
| CN103335970A (en) | Flue gas denitration monitoring system and method | |
| CN204044057U (en) | A kind of miniature infrared automobile exhaust analyzer | |
| CN203502344U (en) | Double-carbon and double-sulfur absorption tank with high and low ranges for infrared carbon and sulfur analyzer | |
| CN202166609U (en) | Ultraviolet difference smoke density monitoring system using hot wet extraction method | |
| CN204405541U (en) | A kind of infrared methane detecting element device | |
| CN103645147A (en) | Spectrophotometer device achieving automatic sampling | |
| CN203083924U (en) | Device for detecting dimethyl ether gas quickly and portably | |
| CN102410987A (en) | Portable infrared gas analyzer | |
| CN209542430U (en) | Miniature UV absorption atmospheric ozone sensor | |
| CN203148841U (en) | High sensitive multiple reflective optical absorption device | |
| CN207623232U (en) | A kind of durable type light path single style gas pond |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |
|
| CX01 | Expiry of patent term |