CN202092950U - Scaling gas sample cell device in spectral measurement - Google Patents
Scaling gas sample cell device in spectral measurement Download PDFInfo
- Publication number
- CN202092950U CN202092950U CN201120133027XU CN201120133027U CN202092950U CN 202092950 U CN202092950 U CN 202092950U CN 201120133027X U CN201120133027X U CN 201120133027XU CN 201120133027 U CN201120133027 U CN 201120133027U CN 202092950 U CN202092950 U CN 202092950U
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- sample cell
- gas
- gas sample
- optical fiber
- cell device
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Abstract
The utility model discloses a standard gas sample cell device for scaling in a spectral gas monitoring instrument, which relates to the technical field of spectral gas sensing and monitoring. The gas sample cell device aims to solve the technical problems so as to firm a gas sample cell cavity, simplify the structure of a spectral gas sensor, reduce the volume, improve the operational safety, and facilitate the transmission of a measurement beam signal. In the standard gas sample cell device, glass windows at front and rear ends of the sample cell cavity are Brewster windows; wedge angles are arranged on the front and rear surfaces of each Brewster window; a package gas nipple of the sample cell cavity is fixed in a shell; and a collimated optical fiber input interface and an optical fiber output interface with a coupled lens are respectively arranged at the front and rear ends of the fixing shell, so that the measurement beam signal can passes through a sample cell conveniently. The gas sample cell device has the characteristics that the gas sample cell cavity is steady, the structure of the spectral gas sensor is simplified, the volume is reduced, the cost is lowered, the operational safety is improved, and the transmission and adjustment of the measurement beam signal are facilitated.
Description
Technical field
The utility model relates in a kind of spectrum formula gas on-line monitoring technique, and the calibration gaseous sample pool device in the relevant spectral measurement particularly relates to and a kind ofly is used for online spectral signal calibration and proofreaies and correct technology at line spectrum formula gas sensing.
Background technology
Spectrum formula gas sensing technology has in environmental monitoring, fire and security alerting system and food chemical industry widely to be used.Generally in spectrum formula gasmetry instrument, all be provided with one and demarcate the calibrating gas sample cell of usefulness, as the signal intensity in measuring relatively, and signal location is determined; When gas was calibrated, measuring beam was incident in the sample cell from the front glass window of sample cell, by the rear end glass window outgoing of the tested gas in the sample cell from sample cell, entered in the spectroscopic analysis system.
General sample cell cavity two ends vertical plane silica glass window.This glass window structure makes measuring beam when the both ends of the surface of sample cell cavity are propagated, and forms interference effect, and measurement result is produced certain error; Under this kind situation, when measuring beam was incident in the front glass window, its surface produced the reflected light that certain Yan Yuanlu returns, and light source output power has been caused certain interference, influences the stability of measuring-signal.
For make as much as possible measuring beam along optical axis direction through the whole sample pond, generally need to cooperate plane mirror and associated supports, regulate being achieved again through light path repeatedly, obviously increased use cost and monitoring instrument volume.And the installation of columniform glass sample cell cavity body is extremely inconvenient, and the vibration in the use can cause that the transmission light path of sample cell changes, and the measuring-signal size is changed thereupon, regulates to light path and brings bigger complicacy, has limited the dirigibility of operation.
The utility model content
At the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides the firm gas sample cell cavity of a kind of energy, simplify the structure of spectrum formula gas sensor, reduce the instrument volume, reduce cost, improve systematic survey degree of accuracy and flexibility of operation, make things convenient for the calibrating gas sample pool device that is directly used in online demarcation of transmission measurement beam signal.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
Calibration gaseous sample pool device in the spectral measurement comprises sample cell cavity, fixed housing, collimating optical fibre input interface, has the optical fiber output interface of coupled lens.The two ends glass window of described sample cell cavity is a Brewster window, and described Brewster window front and rear surfaces becomes an angle of wedge.
Further, after described sample cell cavity is full of calibrating gas by a valve, valve is carried out the sintering encapsulation.
Further, the stationary installation of described sample cell cavity is a rectangular parallelepiped fixed housing.
Further, described sample cell cavity is fixed in the described fixed housing by its encapsulation valve.
Further, the front end of described fixed housing is installed the described optical fiber input interface that collimating effect is arranged by ring flange, and described optical fiber output interface and the tail optical fiber that has coupled lens installed in the rear end of described fixed housing.
Further, described fixed housing is fixed by four screws of bottom surface.
Compared with prior art, the utility model has the advantages that: because the sample cell two ends are Brewster window, the plane, front and back becomes an angle of wedge each other, has reduced interference effect; Avoid reflected light to turn back to light source simultaneously, strengthened the stability of light source output power; Owing to adopted shell fixed sample cell cavity body, increased the safety in utilization of sample cell, and the installation that has made things convenient for sample cell; And optical fiber input interface, outer casing back that the shell front end is connected to collimating effect are connected to the optical fiber output interface that has coupled lens, have simplified the complicacy that apparatus structure and light path are regulated, and have improved the measuring accuracy and the stability of system.
Description of drawings
Fig. 1 is the front view of the utility model embodiment standard model pond fixture structure;
Fig. 2 is the vertical view of the utility model embodiment standard model pond fixture structure.
Embodiment
Consult Fig. 1, Fig. 2 is the embodiment of the calibration gaseous sample pool device in the utility model spectral measurement, calibration gaseous sample pool device in the spectral measurement, comprise sample cell cavity 1, fixed housing 2 and 6, sample cell cavity encapsulation valve 3, Brewster window 4, collimating optical fibre input interface 5, tail optical fiber and output interface 7, optical fiber coupled lens 8, described sample cell cavity 1 is designed to a cavity that is packaged with known gas, and leave encapsulation valve 3, the rear and front end glass window of described sample cell cavity 1 is a Brewster window 4, described Brewster window 4 front and rear surfaces become an angle of wedge, described sample cell cavity 1 relies on encapsulation valve 3 to be fixed in the described fixed housing 2, described optical fiber input interface 5 is installed on the front end face of fixed housing 2 by ring flange, described fixed housing 6 comprises fixed housing bottom surface 61, fixing threaded hole 62, described fixing threaded hole 62 is positioned on the fixed housing bottom surface 61, in 61 rear and front ends, fixed housing bottom surface two fixing threaded holes 62 are arranged respectively, described tail optical fiber 7 is directly connected on the described optical fiber coupled lens 8.
The above only is a specific embodiment of the utility model, but technical characterictic of the present utility model is not limited thereto, any those skilled in the art is in field of the present utility model, and variation of being done or modification all are encompassed among the claim of the present utility model.
Claims (3)
1. the calibration gaseous sample pool device in the spectral measurement, it is characterized in that: the glass window of sample cell cavity (1) rear and front end is Brewster window (4), and the front and rear surfaces of described Brewster window (4) becomes an angle of wedge.
2. the calibration gaseous sample pool device in the spectral measurement as claimed in claim 1 is characterized in that: the stationary installation of described sample cell cavity (1) is a rectangular parallelepiped fixed housing (2).
3. the calibration gaseous sample pool device in the spectral measurement as claimed in claim 1, it is characterized in that: the front end of fixed housing (2) is equipped with the optical fiber input interface (5) of collimating effect, and optical fiber output interface (8) and the tail optical fiber (7) that has coupled lens installed in its rear end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120133027XU CN202092950U (en) | 2011-04-26 | 2011-04-26 | Scaling gas sample cell device in spectral measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120133027XU CN202092950U (en) | 2011-04-26 | 2011-04-26 | Scaling gas sample cell device in spectral measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202092950U true CN202092950U (en) | 2011-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120133027XU Expired - Fee Related CN202092950U (en) | 2011-04-26 | 2011-04-26 | Scaling gas sample cell device in spectral measurement |
Country Status (1)
| Country | Link |
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| CN (1) | CN202092950U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543110A (en) * | 2013-10-16 | 2014-01-29 | 中国科学院安徽光学精密机械研究所 | Special gas calibration device of large-visual-field atmospheric trace gas monitor |
| CN104458584A (en) * | 2014-12-16 | 2015-03-25 | 苏州谱道光电科技有限公司 | Sample chamber of sample analysis device |
| CN105548074A (en) * | 2015-12-31 | 2016-05-04 | 郑州光力科技股份有限公司 | Self-calibrating gas chamber and detecting system for gas sensor using self-calibrating gas chamber |
| CN113281300A (en) * | 2021-05-21 | 2021-08-20 | 中国人民解放军战略支援部队航天工程大学 | Measuring device for high-sensitivity measurement of weak absorption gas parameters in narrow environment |
-
2011
- 2011-04-26 CN CN201120133027XU patent/CN202092950U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543110A (en) * | 2013-10-16 | 2014-01-29 | 中国科学院安徽光学精密机械研究所 | Special gas calibration device of large-visual-field atmospheric trace gas monitor |
| CN104458584A (en) * | 2014-12-16 | 2015-03-25 | 苏州谱道光电科技有限公司 | Sample chamber of sample analysis device |
| CN105548074A (en) * | 2015-12-31 | 2016-05-04 | 郑州光力科技股份有限公司 | Self-calibrating gas chamber and detecting system for gas sensor using self-calibrating gas chamber |
| CN113281300A (en) * | 2021-05-21 | 2021-08-20 | 中国人民解放军战略支援部队航天工程大学 | Measuring device for high-sensitivity measurement of weak absorption gas parameters in narrow environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20120426 |