CN107314814A - The spectroscopic light source system of uniform surface-emitting type gas absorption cell - Google Patents
The spectroscopic light source system of uniform surface-emitting type gas absorption cell Download PDFInfo
- Publication number
- CN107314814A CN107314814A CN201710354258.5A CN201710354258A CN107314814A CN 107314814 A CN107314814 A CN 107314814A CN 201710354258 A CN201710354258 A CN 201710354258A CN 107314814 A CN107314814 A CN 107314814A
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- China
- Prior art keywords
- lamp
- glass
- light source
- source system
- absorption cell
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Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 27
- 239000011521 glass Substances 0.000 claims abstract description 55
- 238000000576 coating method Methods 0.000 claims abstract description 27
- 238000009792 diffusion process Methods 0.000 claims abstract description 26
- 239000011248 coating agent Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000001228 spectrum Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 51
- 230000003595 spectral effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000000862 absorption spectrum Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000010415 tropism Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
- G01J3/02—Details
- G01J3/10—Arrangements of light sources specially adapted for spectrometry or colorimetry
Abstract
The invention discloses a kind of spectroscopic light source system of uniform surface-emitting type gas absorption cell, it includes shell, diffusion coating, lamp, lamp radiator, water cooling tube, light-emitting window, glass chamber etc., diffuse coating and be located at inner surface of outer cover, all it is connected on two shells, two diffusion coatings with light-emitting window, diffusion coating is connected with glass chamber, multiple water cooling tubes are arranged on shell, and multiple lamp radiators are arranged on shell, and lamp is connected with lamp radiator.The present invention can improve the energy of outlet light, reduce cost, reduce volume, saving gas.
Description
Technical field
The present invention relates to a kind of spectroscopic light source system, more particularly to a kind of spectrum of uniform surface-emitting type gas absorption cell
Light-source system.
Background technology
Gas absorption cell can provide the radiation with object gas absorption characteristic for air main greenhouse gas detector
Source, simulates the spectral characteristics of radiation of in-orbit observation air, can be used for instrument spectral calibration, realize spectral resolution in full spectral coverage
With the detection and checking of instrumental line shape function, while accurately controlling carbonate concentration and temperature, analyzed to carry out instrument detectivity
And target gas levels inverting provides basic data.Existing gas absorption cell is typically based on traditional White (White)
Pond and the improvement in Herriott (Maurice Herriott) pond, mainly make light path multiple reflections in gas compartment realize effective by speculum
The extension of light path, testing light source is located at gas compartment light inlet, and detection instrument is located at gas compartment light-emitting window.
There is following defect in prior art：First, gas compartment and light source are discrete, and volume is larger, and cost is high, not portable, move
It is dynamic；2nd, light source passes through absorption cell optical alignment and multiple reflections, and capacity usage ratio is relatively low, and light-emitting window energy is weaker, influence detection
Device signal to noise ratio；3rd, due to using the directional light that is defined at collimation and repeatedly mirror-reflection, absorption cell light-emitting window six, with obvious side
Tropism, has higher requirements to instrument alignment precision, influences repetition stability；4th, because gas building volume is larger, it is necessary to larger gas
The scale of construction can complete the replacement of gaseous sample, cause a certain degree of waste, while there is dead angle in gas compartment causes other
The residual of gas, the degree of purity of influence test gas.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of spectroscopic light source system of uniform surface-emitting type gas absorption cell
System, it can improve the energy of outlet light, reduce cost, reduce volume, saving gas.
The present invention is to solve above-mentioned technical problem by following technical proposals：A kind of uniform surface-emitting type gas absorbs
The spectroscopic light source system in pond, it includes shell, diffusion coating, lamp, lamp radiator, water cooling tube, light-emitting window, glass chamber, air inlet
Valve, outlet valve, pressure gauge, air inlet, gas outlet, diffusion coating are located at inner surface of outer cover, and two shells, two diffusions are applied
All it is connected on layer with light-emitting window, diffusion coating is connected with glass chamber, and multiple water cooling tubes are arranged on shell, multiple lamp radiators
On shell, lamp is connected with lamp radiator, and diffusion coating, glass chamber are all connected with lamp, air inlet, gas outlet all with glass
Glass cavity is connected, and air inlet is located at the top of gas outlet, and air intake valve is connected by glass chamber with air inlet, and outlet valve is led to
Cross glass chamber with gas outlet to be connected, pressure gauge is arranged on glass chamber, pressure gauge is located at the lower section of shell.
Preferably, the shell is provided with multiple circular holes.
Preferably, the air inlet, the shape of gas outlet are all thin tube-like.
Preferably, the glass chamber be shaped as it is spherical.
Preferably, the glass chamber is provided with multiple grooves.
Preferably, it is provided with space between the diffusion coating and glass chamber.
Preferably, the shell, diffusion coating, lamp, lamp radiator and water cooling tube constitute an integrating sphere.
Preferably, the glass chamber, air intake valve, outlet valve and pressure gauge constitute a gas cell.
Preferably, the glass chamber is higher than 90% in the transmitance of institute's inflatable body absorption bands and spectrum is flat, simultaneously
It is less than 0.1% in Thermal infrared bands transmitance.
The positive effect of the present invention is：The present invention can effectively be disappeared by the way that glass chamber is placed in integrating sphere
Except conventional gas absorption pond body accumulates the defects such as big, cost height, the waste of light-emitting window energy dropoff, gas and gas residue；Profit
With the multiple diffusing reflection principle of integrating sphere, by the integrated design of gas cell, integrating sphere, make its equivalent optical path length and larger volume
Quite, the light that integrating sphere light-emitting window is sent directly includes the absorption spectrum information of internal institute inflatable body to the optical length of absorption cell,
Overall structure miniaturization, lightweight are realized, holistic cost is reduced, wasted while reducing gas；Integrating sphere is imitated to the integration of light
Fruit effectively improves capacity usage ratio, and light-emitting window energy is higher；Integrating sphere self-characteristic determines that its emergent light has good face equal
Even property, angle uniformity, can effectively lowering apparatus to alignment request, improve repetition stability；The spherical body of gas cell without dead angle,
Residual gas is difficult, gas degree of purity is guaranteed.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Embodiment
Present pre-ferred embodiments are provided below in conjunction with the accompanying drawings, to describe technical scheme in detail.
Applied as shown in figure 1, the spectroscopic light source system of the uniform surface-emitting type gas absorption cell of the present invention includes shell 1, diffusion
Layer 2, lamp 3, lamp radiator 4, water cooling tube 5, light-emitting window 6, glass chamber 7, air intake valve 8, outlet valve 9, pressure gauge 10, air inlet
Mouthfuls 11, gas outlet 12, diffusion coating 2 be located on the inner surface of shell 1, two shells 1, two diffusion coatings 2 all with the phase of light-emitting window 6
Even, diffusion coating 2 is connected with glass chamber 7, and multiple water cooling tubes 5 are arranged on shell 1, and multiple lamp radiators 4 are arranged on shell 1
On, lamp 3 is connected with lamp radiator 4, and diffusion coating 2, glass chamber 7 are all connected with lamp 3, air inlet 11, gas outlet 12 all with glass
Glass cavity 7 is connected, and air inlet 11 is located at the top of gas outlet 12, and air intake valve 8 is connected by glass chamber 7 with air inlet 11,
Outlet valve 9 is connected by glass chamber 7 with gas outlet 12, and pressure gauge 10 is arranged on glass chamber 7, and pressure gauge 10 is located at outer
The lower section of shell 1.
The shell 1 is provided with multiple circular holes, so convenient to fix.
The air inlet 11, the shape of gas outlet 12 are all thin tube-like, so facilitate discharge gas.
Being shaped as the glass chamber 7 is spherical, so without dead angle, is difficult residual gas, it is ensured that gas degree of purity.
The glass chamber 7 is provided with multiple grooves, so facilitates the installation of lamp 3, improves the brightness of lamp 3.
Space is provided between the diffusion coating 2 and glass chamber 7, can so prevent from shrinking because diffusing coating 2, expand
Caused glass chamber 7 ruptures.
The shell 1, diffusion coating 2, lamp 3, lamp radiator 4 and water cooling tube 5 constitute an integrating sphere, so effectively reduction
Instrument improves repetition stability to alignment request.
The glass chamber 7, air intake valve 8, outlet valve 9 and pressure gauge 10 constitute a gas cell, can so carry
High gas degree of purity.
The glass chamber is higher than 90% in the transmitance of institute's inflatable body absorption bands and spectrum is flat, while in thermal infrared
Wave band transmitance is less than 0.1%, such convenient use.
The installation method of the spectroscopic light source system of uniform surface-emitting type gas absorption cell of the invention comprises the following steps：
Step one, two diffusion coating hemisphere are respectively embedded into corresponding shell hemisphere；By the glass chamber after cleaning, drying
It is stuck in two diffusion coatings, glass chamber, air inlet, gas outlet is stretched out diffusion coating and shell, by screw by outside two
Shell is fixed tight；
Step 2, lamp is on the lamp radiator, and lamp radiator is fixed on shell, and lamp is towards in glass chamber；
Step 3, outer side is coiled in by water cooling tube, and both are close to；
Step 4, air intake valve is installed on the air inlet position on glass chamber, and outlet valve is installed on glass chamber
Gas outlet position, pressure gauge is fixed on air inlet or gas outlet, positioned at air intake valve or outlet valve in the inner part.
The air inlet 11, the position of gas outlet 12 can be adjusted as needed, and the number of the lamp 3 is at least
One, the type of lamp 3, number, power and bit, which are put, to be adjusted as needed, and lamp radiator 4 can use wind as needed
Cold, water cooling, fin or other forms, so improve service efficiency.
The operation principle of the present invention is as follows：The cold water of specified temp in water cooling tube interior circulation, if lamp radiator be water cooling or
It is air-cooled, then make lamp radiator start working；Air intake valve and outlet valve are opened, target gas is filled with by glass chamber air inlet
Body, closes outlet valve, observation pressure gauge until after display target pressure, closing air intake valve；Turn on lights, into half spherical space
Launch light, light enters glass chamber, footpath carries out multiple diffusing reflection after absorbing by integrating sphere diffusion coating, it is superimposed after by accumulating
Bulb separation light-emitting window is exported, and forms the uniformly light-emitting area source with object gas absorption spectrum；Glass chamber passes through glass material
Selection and the measure such as plated film, institute's inflatable body absorption bands transmitance is higher than 90% and spectrum is flat, while in thermal infrared
Wave band transmitance is less than 0.1%, can reduce the influence that lamp generates heat to gas temperature.
Particular embodiments described above, technical problem, technical scheme and beneficial effect to the solution of the present invention are carried out
It is further described, should be understood that the specific embodiment that the foregoing is only of the invention, be not limited to
The present invention, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc. should be included in this
Within the protection domain of invention.
Claims (9)
1. a kind of spectroscopic light source system of uniform surface-emitting type gas absorption cell, it is characterised in that it includes shell, diffusion and applied
Layer, lamp, lamp radiator, water cooling tube, light-emitting window, glass chamber, air intake valve, outlet valve, pressure gauge, air inlet, gas outlet,
Diffuse coating on inner surface of outer cover, two shells, two diffusion coatings all with light-emitting window to be connected, diffusion coating and glass chamber
Body phase connects, and multiple water cooling tubes are arranged on shell, and multiple lamp radiators are arranged on shell, and lamp is connected with lamp radiator, diffusion
Coating, glass chamber are all connected with lamp, and air inlet, gas outlet are all connected with glass chamber, and air inlet is located at the top of gas outlet,
Air intake valve is connected by glass chamber with air inlet, and outlet valve is connected by glass chamber with gas outlet, and pressure gauge is installed
On glass chamber, pressure gauge is located at the lower section of shell.
2. the spectroscopic light source system of uniform surface-emitting type gas absorption cell as claimed in claim 1, it is characterised in that described outer
Shell is provided with multiple circular holes.
3. the spectroscopic light source system of surface-emitting type gas absorption cell as claimed in claim 1 uniform, it is characterised in that it is described enter
Gas port, the shape of gas outlet are all thin tube-like.
4. the spectroscopic light source system of uniform surface-emitting type gas absorption cell as claimed in claim 1, it is characterised in that the glass
Being shaped as glass cavity is spherical.
5. the spectroscopic light source system of uniform surface-emitting type gas absorption cell as claimed in claim 1, it is characterised in that the glass
Glass cavity is provided with multiple grooves.
6. the spectroscopic light source system of uniform surface-emitting type gas absorption cell as claimed in claim 1, it is characterised in that described unrestrained
Penetrate and space is provided between coating and glass chamber.
7. the spectroscopic light source system of uniform surface-emitting type gas absorption cell as claimed in claim 1, it is characterised in that described outer
Shell, diffusion coating, lamp, lamp radiator and water cooling tube constitute an integrating sphere.
8. the spectroscopic light source system of uniform surface-emitting type gas absorption cell as claimed in claim 1, it is characterised in that the glass
Glass cavity, air intake valve, outlet valve and pressure gauge constitute a gas cell.
9. the spectroscopic light source system of uniform surface-emitting type gas absorption cell as claimed in claim 1, it is characterised in that the glass
Glass cavity is higher than 90% in the transmitance of institute's inflatable body absorption bands and spectrum is flat, while being less than in Thermal infrared bands transmitance
0.1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710354258.5A CN107314814B (en) | 2017-05-18 | 2017-05-18 | The spectroscopic light source system of uniform surface-emitting type gas absorption cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710354258.5A CN107314814B (en) | 2017-05-18 | 2017-05-18 | The spectroscopic light source system of uniform surface-emitting type gas absorption cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107314814A true CN107314814A (en) | 2017-11-03 |
| CN107314814B CN107314814B (en) | 2019-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710354258.5A Active CN107314814B (en) | 2017-05-18 | 2017-05-18 | The spectroscopic light source system of uniform surface-emitting type gas absorption cell |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657886A (en) * | 2019-10-14 | 2020-01-07 | 中国计量科学研究院 | Light source system for radiometer calibration |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2501045Y (en) * | 2001-10-12 | 2002-07-17 | 上海棱光技术有限公司 | Near infrared ray concentration receiver |
| WO2003087786A1 (en) * | 2002-04-08 | 2003-10-23 | Bae Systems Plc | Method and apparatus for gas detection |
| CN104215956A (en) * | 2014-08-25 | 2014-12-17 | 中国科学院长春光学精密机械与物理研究所 | System for providing high-light integrating sphere calibration light sources |
| CN105158184A (en) * | 2015-09-11 | 2015-12-16 | 深圳世绘林科技有限公司 | Gas online analysis device based on optical integrating sphere |
-
2017
- 2017-05-18 CN CN201710354258.5A patent/CN107314814B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2501045Y (en) * | 2001-10-12 | 2002-07-17 | 上海棱光技术有限公司 | Near infrared ray concentration receiver |
| WO2003087786A1 (en) * | 2002-04-08 | 2003-10-23 | Bae Systems Plc | Method and apparatus for gas detection |
| CN104215956A (en) * | 2014-08-25 | 2014-12-17 | 中国科学院长春光学精密机械与物理研究所 | System for providing high-light integrating sphere calibration light sources |
| CN105158184A (en) * | 2015-09-11 | 2015-12-16 | 深圳世绘林科技有限公司 | Gas online analysis device based on optical integrating sphere |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657886A (en) * | 2019-10-14 | 2020-01-07 | 中国计量科学研究院 | Light source system for radiometer calibration |
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| Publication number | Publication date |
|---|---|
| CN107314814B (en) | 2019-01-18 |
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