CN205844178U - Device based on TDLAS detection multiple gases - Google Patents
Device based on TDLAS detection multiple gases Download PDFInfo
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- CN205844178U CN205844178U CN201620410262.XU CN201620410262U CN205844178U CN 205844178 U CN205844178 U CN 205844178U CN 201620410262 U CN201620410262 U CN 201620410262U CN 205844178 U CN205844178 U CN 205844178U
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Abstract
The utility model discloses a kind of device based on TDLAS detection multiple gases, change the laser instrument of optical wavelength corresponding in the air chamber equipped with gas with various and laser mounting seat, the concentration of various gas can be detected easily.Laser mounting seat is provided with temperature control, display screen and operation button, and laser instrument is arranged on the above saddle fixture of laser mounting seat, during detection gas with various, only need to open saddle clamp-replacing laser instrument.Independent inclined-plane air chamber is cylindrical, and printing opacity, the diaphragm of stable chemical performance are bonded on the inclined-plane of air chamber, and inclined-plane air chamber is shelved on tray.Air chamber is concentric, parallel with the reflecting mirror of two ends of long light path reflection tank, connection collar bolt of outwarding winding, the most replaceable inclined-plane air chamber equipped with gas with various.The light hole receiving chip center's alignment long light path reflection tank of detector, by the optical signal transmission of reception to controller, controller is integrated with Laser Drive, transfers data to host computer and process display testing result after gathering signal.
Description
Technical field
This utility model relates to optical technical field, particularly relates to device based on TDLAS detection multiple gases.
Background technology
Act on a kind of method measuring gas concentration, TDLAS (Tunable Diode Laser Absorption
Spectroscopy tunable diode laser absorption spectroscopy).Laser measurement gas concentration is used the most progressively to substitute traditional
Electrochemistry type gas detecting form, the significant advantage that its speed is fast, highly sensitive, at environment measuring, scientific experiment, oil
The field such as work, mining commonly uses.TDLAS technology is a kind of high-resolution spectral absorption technology, in mixed gas to be measured
In, its various specific gas componants are respectively provided with the absorption characteristic of specific wavelength, are treated by the laser light incident with characteristic frequency
Surveying gas, incident laser is strongly absorbed near the characteristic frequency of the object gas composition of this gas to be measured, and laser passes quilt
Survey the light strong production decay of gas.Lambert-Beer's law is can use to measure gas by the decay of the light intensity after GAS ABSORPTION laser
Concentration.TDLAS detection equipment includes: laser instrument and installation, Laser Drive, temperature control, collimator, long light path reflects
Pond, air chamber, detector, phase-locked amplification demodulation, data acquisition module forms.These module manufacturers and user have various combination
Form, formed the most different work efficiencies and Financial cost, it is often more important that the precision of testing result has certain difference.
Be applied in combination TDLAS detection equipment at present typically has a following form:
1, laser is installed and is controlled one laser module of composition, the laser of different-waveband with collimator, Laser Drive, temperature
The module of different model selected by device, detects different gas and must purchase different laser modules.
2, laser instrument transmitting light enters to inject long light path reflection tank after being regulated by one group of correlation mirror, and long light path reflection tank is gentle
Room combination long path cell module, two ends of air chamber are one group of reflecting mirrors；Some volatility, rotten turbid needs are cleaned in time,
It is easy to damage reflecting mirror and integral module.
Summary of the invention
This utility model purpose is: device based on TDLAS detection multiple gases, uses set of device, detects gaseous mixture
Body, according to the specific absorption light wave of object gas composition, the laser instrument of interchangeable corresponding wavelength, can record multiple at same air chamber
The concentration of gas with various；Change the air chamber equipped with gas with various and the laser instrument of corresponding optical wavelength, can detect each easily
Plant the concentration of gas.This device includes: 1, is provided with in laser mounting seat and has temperature control, display screen and operation button, and operation swashs
The preset temperature of light device and display real time operation temperature.Laser instrument is arranged on the above saddle fixture of laser mounting seat, inspection
When surveying gas with various, only need to open saddle fixture, change the laser instrument of different wave length easily.2, be provided with long light path reflection tank,
Air chamber, tray, connection ring, O RunddichtringO, detector are split type composite module.Described long light path reflection tank is provided with base plate, and two
Individual mirror fixed mount, two concave mirrors, two shroudings.Light well, collimation adjustment plate is had to be arranged on front shrouding on front shrouding,
Collimator is arranged on collimation adjustment plate, and the fibre-optical splice of laser instrument connects on the collimator, and the light of penetrating of laser instrument is put into long
Light path reflection tank, two the concave mirror opposites being arranged in two mirror fixed mounts reflect many sub-beams, from back mirror,
Light hole injection on rear shrouding.
Air chamber is independent cylindrical gas closed chamber, and two ends are inclined-plane, and inclined-plane air chamber uses and do not absorbs light source, does not adsorbs
Gas, stable chemical performance, certain stable and atmospheric pressure material can be born and make, the diaphragm selection printing opacity on inclined-plane,
Chemical stability material is bonded on the inclined-plane of air chamber, and inclined-plane air chamber is shelved on tray.Tray is divided into before and after two pieces, rear tray
On the base plate of the centre being arranged on long light path reflection tank, front shoe is connected fixing with rear tray.Two ends have air chamber to connect ring and O type
Sealing ring is connected with the mirror fixed-use bolt of long light path reflection tank, makes air chamber same with the reflecting mirror of two ends of long light path reflection tank
The heart, parallel.The most conveniently replaced inclined-plane air chamber equipped with gas with various of bolt of outwarding winding.Detector is placed in long light path reflection tank
The rear end of base plate, the light hole receiving chip center's alignment long light path reflection tank of detector.3, controller it is provided with by laser instrument
Drive, phase-locked amplification demodulation is combined in a controller, integrated power supply in controller, laser bench is powered and data receiver,
Gather detector optical signal and transfer the signal of telecommunication etc. to, have the interface transferring data to host computer, the data in host computer process
After resume module, detection data are shown.
The technical solution of the utility model is: device based on TDLAS detection multiple gases, uses set of device, detection
Mixed gas, according to the specific absorption light wave of object gas composition, the laser instrument of interchangeable corresponding wavelength, can survey at same air chamber
Obtain the concentration of multiple gas with various；Change the air chamber equipped with gas with various and the laser instrument of corresponding optical wavelength, can be easily
Detect the concentration of various gas.Including: laser mounting seat, long light path reflection tank, inclined-plane air chamber, tray, two air chambers connect ring
With O RunddichtringO, detector, controller.
There is uniform flute profile radiating groove in above described laser mounting seat and two survey faces, above the pars intermedia of radiating groove step down and be provided with
Saddle fixture, for clamping laser instrument, two survey the radiating groove in face installs the heat radiation of Temperature Controlling Chip for inwall；Laser mounting seat
There are display screen and operation button, operation laser instrument preset temperature and display real time operation temperature in front；It is backed with two DB9 to connect
Mouthful, connect controller.
Described long light path reflection tank is provided with base plate, two mirror fixed mounts, two concave mirrors, two shroudings.Front shrouding
On have light well, collimation adjustment plate to be arranged on front shrouding, collimator is arranged on collimation adjustment plate, the fibre-optical splice of laser instrument
Connecting on the collimator, the light of penetrating of laser instrument is put into long light path reflection tank, two concave surfaces being arranged in two mirror fixed mounts
Reflecting mirror opposite multiple reflections light beam, the light hole injection from back concave surface reflecting mirror, rear shrouding.
Described inclined-plane air chamber uses and does not absorb light source, not adsorbed gas, stable chemical performance, can bear certain atmospheric pressure
Material, if the bright and clean cylindrical tube of inwall, biend is inclined-plane, it is to avoid through the reflection interference light source of light；Cylindrical tube
On have two air inlet/outlets, be used for gas connection and air valve being installed to control input and output gas.The diaphragm on inclined-plane selects light transmittance
High, chemical stability material, is bonded on the inclined-plane of air chamber.
Described tray divides forward and backward two pieces, the above be circular arc for holding in the palm air chamber, the bottom surface bolt of rear tray is arranged on the end
On plate, front shoe is arranged on rear tray from leading flank bolt.
Described connection ring connects for inclined-plane air chamber and long light path reflection tank, connects ring and is bolted on mirror fixed mount
On, O RunddichtringO is embedded in the interior circular groove that air chamber connects ring so that the reflecting mirror of two ends of inclined-plane air chamber and long light path reflection tank
With one heart, parallel, also protect mirror surface not gray-off dirt.
The light hole receiving chip center's alignment long light path reflection tank of described detector, is placed in long light path reflection tank
The rear end of base plate.
The utility model has the advantages that:
1, a set of TDLAS equipment can detect multiple gases, has compact conformation, applied widely.
2, laser instrument and inclined-plane air chamber are changed, easy to operate.
3, independent air chamber easy cleaning, prevents gas cross from reacting, and affects the precision of detected gas, and detection equipment will not be by institute
Survey gas damage, extend service life.
Accompanying drawing explanation
Fig. 1 is this utility model device axonometric chart；
Fig. 2 is the electricity of this utility model device, light path schematic diagram；
Fig. 3 is this utility model laser mounting bracket assembly view, and figure a is front view, and figure b is rearview, and figure c is to overlook
Figure, figure d is side view；
Fig. 4 is this utility model long light path reflection tank assembly axonometric chart；
Fig. 5 is this utility model component with inclined plane air chamber positive view；
Label in figure: 1 laser mounting seat；11 display screens；12 buttons；13 DB9 joints；14 saddle fixtures；15 dissipate
Heat channel；16 Temperature Controlling Chips；2 laser instrument；21 fibre-optical splices；3 collimators；31 collimation adjustment blocks；4 long light path reflection tanks；
41 base plates；42 mirror fixed mounts (two)；43 shroudings (two)；44 concave mirrors (two)；45 struts；5 inclined-plane gas
Pond；51 diaphragms (two)；52 air inlet/outlets (two)；6 trays；60 arc surfaces；Tray after 61；611 screws；62
Front shoe；Screw before 621；7 O RunddichtringOs；8 connect ring；81 O-ring grooves；9 detectors；91 receive chip；92 transmission
Joint；10 controllers；11 bolts.
Detailed description of the invention
Further describe with embodiment below in conjunction with the accompanying drawings:
As it is shown in figure 1, device based on TDLAS detection multiple gases, change the inclined-plane air chamber equipped with various gases to be measured,
Specific absorption light wave according to object gas composition, the laser instrument of optical wavelength corresponding in configuration laser mounting seat, a set of TDLAS
Device can detect the concentration of various gas easily.Device includes: laser mounting seat 1, laser instrument 2, and collimator 3, long light path is anti-
Penetrate pond 4, gas pond, inclined-plane 5, tray 6, O RunddichtringO 7, connect ring 8, detector 9, controller 10.Above described laser mounting seat 1
Pars intermedia be provided with saddle fixture 14, for clamping laser instrument 2, fibre-optical splice 21 and the collimator 3 of described laser instrument 2 pass through spiral shell
Stricture of vagina connects, and collimation adjustment block 31 is connected with the front shrouding in long light path reflection tank 4 by bolt.Described inclined-plane air chamber 5 is shelved on
On tray 6, on the base plate of the centre that described tray 6 is arranged on long light path reflection tank 4, described connection ring 8 is for inclined-plane air chamber 5 He
The connection of the mirror fixed mount of long light path reflection tank 4, described O RunddichtringO 7 is embedded in connection ring 8.The reception core of described detector 9
The light hole of sheet center alignment long light path reflection tank 4, is placed in the rear end of the base plate of long light path reflection tank 4.Described controller 10
Integrated power supply, Laser Drive, collection detector signal, phase-locked amplification demodulation combination, transferred data to by external tapping
Position machine.
The electricity of this utility model device, light path schematic diagram as shown in Figure 2, plant-grid connection controller, controller is pacified to laser
Laser instrument on dress seat provides and drives, and receives temperature signal.Laser instrument outgoing beam, is arranged on the recessed of long light path reflection tank two end
Face reflecting mirror will penetrate (dashed bars signal light beam) from light hole after light beam multiple reflections, and detector receives optical signal and is amplified
After process transfers the signal of telecommunication to, being transferred to controller, controller transfers data to host computer after being processed by lockin signal.
Utility model laser mounting bracket assembly view as shown in Figure 3, figure a is front view: the front of laser mounting seat 1 has aobvious
Display screen 11 and operation button 12, operation laser instrument 2 preset temperature and display real time operation temperature, saddle fixture 14 compresses laser instrument
State.Figure b is rearview: be backed with two DB9 interfaces 13, connects controller 10, and saddle fixture 140 is the state opened.
Figure c is top view: laser mounting seat 1 is above and there is uniform flute profile radiating groove 15 in two survey faces, above the pars intermedia of radiating groove step down
Being provided with saddle fixture 14, laser instrument 2 clamping is in the centre of saddle fixture 14.Figure d is side view: two survey the radiating groove in face for interior
The heat radiation of Temperature Controlling Chip 16 installed by wall.
This utility model long light path reflection tank assembly axonometric chart as shown in Figure 4, described long light path reflection tank 4 is provided with base plate
41, two mirror fixed mounts 42, two concave mirrors 44, two shroudings 43, strut 45 connects the mirror fixed mount 42 of two ends.Front envelope
Having light well on plate, rear shrouding has light hole, collimation adjustment plate 31 is arranged on front shrouding 43 by bolt.Described tray 6
Dividing forward and backward two pieces, the above is arc surface 60, is used for asking inclined-plane air chamber, the bottom surface bolt of rear tray 61 to be arranged on base plate 41,
The leading flank of front shoe 62 have two before screw 621, bolt 11 be connected with rear tray screw 611, bolt 11 of outwarding winding can exit
Front shoe 62, facilitates the replacing of inclined-plane air chamber 5.Chip 91 center that receives of described detector 9 is directed at going out of long light path reflection tank 4
Unthreaded hole, is placed in the rear end of base plate 41.Described connection ring 8 is bolted for inclined-plane air chamber 5 and mirror fixed mount 42, O type
Sealing ring 7 is embedded in the interior circular groove 81 that air chamber connects ring so that the reflecting mirror of two ends of inclined-plane air chamber 5 and long light path reflection tank 4
44 is concentric, parallel, also protects mirror surface 44 not gray-off dirt.The most conveniently replaced inclined-plane equipped with gas with various of bolt of outwarding winding
Air chamber.
This utility model component with inclined plane air chamber positive view as shown in Figure 5, inclined-plane air chamber 5 uses and does not absorbs light source, do not inhales
Attached gas, stable chemical performance, the material of certain atmospheric pressure can be born, if the bright and clean cylindrical tube of inwall, biend is oblique
Face, it is to avoid through the reflection interference light source of light；There are two air inlet/outlets 52 on cylindrical tube, are used for that gas connection is installed gentle
Valve controls input and output gas.The diaphragm 51 on two inclined-planes selects light transmittance height, chemical stability material, is bonded in the oblique of air chamber
On face.
Below it is only concrete exemplary applications of the present utility model, protection domain of the present utility model is not constituted any limit
System.In addition to the implementation, this utility model can also have other embodiment.All employing equivalents or equivalent transformation are formed
Technical scheme, all fall within this utility model claimed within the scope of.
Claims (4)
1. device based on TDLAS detection multiple gases, it is characterised in that including: laser mounting seat, laser instrument, collimator, long
Light path reflection tank, gas pond, inclined-plane, tray, O RunddichtringO, connect ring, detector, controller；Above described laser mounting seat
Pars intermedia is provided with saddle fixture, and for clamping laser instrument, the fibre-optical splice of described laser instrument is threaded connection with collimator, accurate
Straight regulating block is connected with the front shrouding in long light path reflection tank by bolt；Described inclined-plane air chamber is shelved on tray, described torr
On the base plate of the centre that block is arranged on long light path reflection tank, described connection ring is solid for the mirror of inclined-plane air chamber and long light path reflection tank
Determining the connection of frame, described O RunddichtringO is embedded in connection ring；The reception chip center alignment long light path reflection tank of described detector
Light hole, be placed in the rear end of the base plate of long light path reflection tank；Described controller integrated power supply, Laser Drive, collection are visited
Survey device signal, phase-locked amplification demodulation combination, transfer data to host computer by external tapping.
Device based on TDLAS detection multiple gases the most according to claim 1, it is characterised in that: described laser mounting seat
Front have display screen and operation button, operation laser instrument preset temperature and display real time operation temperature, saddle clamp pressing swash
The state of light device；It is backed with two DB9 interfaces, connects controller；Above laser mounting seat and two survey faces have uniform flute profile to dispel the heat
Groove, above the pars intermedia of radiating groove step down and be provided with saddle fixture, laser instrument clamping is in the centre of saddle fixture；Two heat radiations surveying face
Groove installs the heat radiation of Temperature Controlling Chip for inwall.
Device based on TDLAS detection multiple gases the most according to claim 1, it is characterised in that: described tray divides forward and backward
Two pieces, the above is arc surface, is used for holding in the palm inclined-plane air chamber, and the bottom surface bolt of rear tray is arranged on base plate, the front side of front shoe
Face have two before screw, bolt be connected with rear tray screw, bolt of outwarding winding can exit front shoe, facilitates inclined-plane air chamber more
Change.
Device based on TDLAS detection multiple gases the most according to claim 1, it is characterised in that: described inclined-plane air chamber is adopted
With not absorbing light source, not adsorbed gas, stable chemical performance, the material of certain atmospheric pressure can be born, if the bright and clean cylinder of inwall
Shape body, biend is inclined-plane, it is to avoid through the reflection interference light source of light；There are two air inlet/outlets on cylindrical tube, are used for
Gas connection is installed and air valve controls input and output gas；The diaphragm on two inclined-planes selects light transmittance height, chemical stability material, viscous
It is connected on the inclined-plane of air chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620410262.XU CN205844178U (en) | 2016-05-09 | 2016-05-09 | Device based on TDLAS detection multiple gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620410262.XU CN205844178U (en) | 2016-05-09 | 2016-05-09 | Device based on TDLAS detection multiple gases |
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| Publication Number | Publication Date |
|---|---|
| CN205844178U true CN205844178U (en) | 2016-12-28 |
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ID=57628938
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620410262.XU Active CN205844178U (en) | 2016-05-09 | 2016-05-09 | Device based on TDLAS detection multiple gases |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911021A (en) * | 2016-05-09 | 2016-08-31 | 上海镭芯微电子有限公司 | Methodand device for detecting various gases based on TDLAS (Tunable Diode Laser Absorption Spectroscopy) |
| CN109540800A (en) * | 2018-12-27 | 2019-03-29 | 皖江新兴产业技术发展中心 | A kind of laser multiple reflectance cell for high-temperature gas detection |
| US10753864B2 (en) | 2018-12-10 | 2020-08-25 | General Electric Company | Gas analysis system |
| US10816458B2 (en) | 2018-12-10 | 2020-10-27 | General Electric Company | Gas analysis system |
| CN115508291A (en) * | 2022-11-08 | 2022-12-23 | 浙江浙大鸣泉科技有限公司 | Optical gas detection device |
-
2016
- 2016-05-09 CN CN201620410262.XU patent/CN205844178U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911021A (en) * | 2016-05-09 | 2016-08-31 | 上海镭芯微电子有限公司 | Methodand device for detecting various gases based on TDLAS (Tunable Diode Laser Absorption Spectroscopy) |
| US10753864B2 (en) | 2018-12-10 | 2020-08-25 | General Electric Company | Gas analysis system |
| US10816458B2 (en) | 2018-12-10 | 2020-10-27 | General Electric Company | Gas analysis system |
| CN109540800A (en) * | 2018-12-27 | 2019-03-29 | 皖江新兴产业技术发展中心 | A kind of laser multiple reflectance cell for high-temperature gas detection |
| CN115508291A (en) * | 2022-11-08 | 2022-12-23 | 浙江浙大鸣泉科技有限公司 | Optical gas detection device |
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