CN103424358A - Multi-parameter temperature-controlled absorption cell device capable of simulating vertical atmospheric environment - Google Patents
Multi-parameter temperature-controlled absorption cell device capable of simulating vertical atmospheric environment Download PDFInfo
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- CN103424358A CN103424358A CN2013102904186A CN201310290418A CN103424358A CN 103424358 A CN103424358 A CN 103424358A CN 2013102904186 A CN2013102904186 A CN 2013102904186A CN 201310290418 A CN201310290418 A CN 201310290418A CN 103424358 A CN103424358 A CN 103424358A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 75
- 230000003287 optical effect Effects 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 62
- 229910052757 nitrogen Inorganic materials 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 28
- 238000001816 cooling Methods 0.000 claims description 20
- 239000000110 cooling liquid Substances 0.000 claims description 13
- 238000004088 simulation Methods 0.000 claims description 13
- 239000002826 coolant Substances 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 4
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 4
- 238000004847 absorption spectroscopy Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000862 absorption spectrum Methods 0.000 abstract 2
- 238000004458 analytical method Methods 0.000 abstract 1
- 238000002834 transmittance Methods 0.000 abstract 1
- 230000008676 import Effects 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 125000003158 alcohol group Chemical group 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了一种多参数可控温模拟垂直大气环境吸收池装置，其特征在于：包括三个参数可控串接设置的单光路单通的低温、中温、常温吸收池，低温、中温吸收池通过第一光路构件连接，中温、常温吸收池通过第二光路构件连接。通过调节单个吸收池的温度、气体体积混合比，可在实验室内模拟垂直高度大气层的温度梯度、压力梯度等各项参数；应用本发明结合直接吸收光谱技术可对大气分子吸收光谱参数进行测量分析，并在此基础上反演垂直大气透过率，归纳大气分子吸收光谱的规律；由于室内环境比较稳定本装置具有精度高，稳定性好等优点，本装置对于大气光学的研究有着重要的意义。
The invention discloses a multi-parameter controllable temperature simulating vertical atmospheric environment absorption pool device, which is characterized in that it comprises three parameter controllable single-path single-pass single-pass low-temperature, medium-temperature, and normal-temperature absorption pools, and low-temperature, medium-temperature absorption pools The pools are connected through the first optical path component, and the medium temperature and normal temperature absorption pools are connected through the second optical path component. By adjusting the temperature and gas volume mixing ratio of a single absorption cell, various parameters such as the temperature gradient and pressure gradient of the vertical altitude atmosphere can be simulated in the laboratory; the absorption spectrum parameters of atmospheric molecules can be measured by using the present invention combined with direct absorption spectroscopy technology analysis, and on this basis, invert the vertical atmospheric transmittance, and summarize the law of the absorption spectrum of atmospheric molecules; because the indoor environment is relatively stable, this device has the advantages of high precision and good stability, and this device has an important role in the study of atmospheric optics. significance.
Description
Technical field
The present invention relates to a kind of experimental provision for the atmospheric optics Absorption Study, be specifically related to a kind of multiparameter controllable temperature and simulate vertical atmospheric environment absorption cell device.
Background technology
The atmospheric envelope temperature is in vertical direction " S " type and distributes, and each layer of gaseous species, content and pressure are also different.The experimental provision of the vertical Atmospheric molecular absorption spectroscopy of outdoor research is subject to the impact of external environment factor, and this makes its experimental data have very large uncertainty; Often adopt single absorption cell research Atmospheric molecular absorption spectroscopy parameter in laboratory, the temperature of its sample cell, pressure, gas concentration can only be in particular value, and the gradient that can't simulate vertical each layer parameter of atmosphere distributes.When research whole atmosphere spectrum parameter, can only carry out inverting in conjunction with the many experiments result, both wasted time and energy like this, inevitably can cause the system testing error again.Therefore, laboratory experiment needs a set of absorption cell system and device of simulating each layer of environment of vertical atmosphere.
Summary of the invention
The present invention seeks to set up a set of each layer of environment of vertical atmosphere of simulating in laboratory, parameter is controlled, the absorption cell system and device of stable performance; That three temperature, the controlled monochromatic light road single-pass absorption cell of pressure and other parameters are linked together and realize by two light path members.
The technical solution used in the present invention is:
A kind of multiparameter controllable temperature is simulated vertical atmospheric environment absorption cell device, it is characterized in that: the low temperature, middle temperature, the normal temperature absorption cell that comprise the monochromatic light road single-pass that three controlled serial connections of parameter arrange, low temperature, middle temperature absorption cell connect by the first light path member, and middle temperature, normal temperature absorption cell connect by the second light path member, described low temperature absorption pond includes the first vacuum shell, be provided with the first sample cell in the first vacuum shell, Dewar flask, Dewar flask and the first vacuum shell top cover link together, the first sample cell is connected with the first vacuum shell top cover by suspension rod and is suspended on below Dewar flask, on the wall of the first sample cell, spiral embeds the first cooling tube, one end of the first cooling tube on Dewar flask and the first sample cell is connected with inverse u shape liquid nitrogen stream buret, the top of the first vacuum shell is provided with the liquid nitrogen import, sample inlet, the liquid nitrogen import, sample inlet is respectively by pipeline and Dewar flask, the first sample cell connects, the pipeline of liquid nitrogen import is provided with pressure valve, safety valve, the pipeline of sample inlet is provided with the sample inlet valve, be connected with the liquid nitrogen flow valve by pipeline on the liquid nitrogen stream buret, the other end of the first cooling tube of the first sample cell is connected with the nitrogen outlet valve by pipeline, have two the first light holes on the first vacuum shell wall, the two ends of the first sample cell are respectively equipped with the first sample cell window, two the first light holes, two the first sample cell windows point-blank, described middle temperature absorption cell includes the second vacuum shell, the second sample cell, the two ends of the second vacuum shell are respectively equipped with the second light hole, the two ends of the second sample cell are respectively equipped with the second sample cell window, on the wall of the second sample cell, spiral embeds the second cooling tube, the second vacuum shell is provided with cooling liquid inlet, cooling liquid outlet, the two ends of the second cooling tube are connected with cooling liquid inlet, cooling liquid outlet respectively, be provided with the sub-cooled pump between cooling liquid inlet and cooling liquid outlet, have the second sample cell air intake opening be communicated with the second sample cell on the second vacuum shell, described normal temperature absorption cell includes the 3rd vacuum shell, the 3rd sample cell, the two ends of the 3rd vacuum shell are respectively equipped with the 3rd light hole, the 3rd sample cell two ends be respectively equipped with the 3rd sample cell window, have the 3rd sample cell air intake opening be communicated with the 3rd sample cell on the 3rd vacuum shell, described first, second light path member has included large cylinder, the middle part of large cylinder is provided with vacuum pumping opening, be equipped with two little cylindrical shells that can be free to slide to two ends respectively in large cylinder, the front end sleeve of little cylindrical shell is equipped with rubber ring, the inwall close contact of the outer wall of rubber ring and large cylinder.
Described multiparameter controllable temperature is simulated vertical atmospheric environment absorption cell device, it is characterized in that: first, second, third sample cell window first, second, third of described low temperature, middle temperature, normal temperature absorption cell and light hole are point-blank and be respectively equipped with wedge shape calcium fluoride eyeglass.
Described multiparameter controllable temperature is simulated vertical atmospheric environment absorption cell device, it is characterized in that: the Dewar flask in described low temperature absorption pond and the liquid nitrogen stream buret between sample cell adopt the inverted U pipe.
Described multiparameter controllable temperature is simulated vertical atmospheric environment absorption cell device, it is characterized in that: low temperature, middle temperature, normal temperature absorption cell temperature, pressure, gas concentration, humidity are set respectively; Low temperature absorption pond simulation upper atmosphere environment, middle temperature absorption cell simulation middle atmosphere environment, normal temperature absorption cell simulation lower atmosphere layer environment, with this environment of atmospheric envelope in the lab simulation vertical distribution.
Described multiparameter controllable temperature is simulated vertical atmospheric environment absorption cell device, it is characterized in that: the internal diameter of the large cylinder of described first, second light path member is that 8 cm, length are 15cm, the two ends of large cylinder overlap respectively that two internal diameters are arranged is the little cylindrical shell that 4 cm, length are 7 cm, whole light path member adopts piston cylinder operator, and length is adjustable between 17 ~ 27 cm.
Advantage of the present invention is:
The present invention utilizes suspension rod that the first sample cell is suspended under Dewar flask, makes whole apparatus structure compactness attractive in appearance; Then Dewar flask and the first sample cell are encapsulated in the first vacuum shell, have two the first light holes on the first vacuum shell wall, the first light hole and the first sample cell window all adopt the sealing of wedge shape calcium fluoride window; Liquid nitrogen stream buret between Dewar flask and the first sample cell adopts the inverse u shape structure, has increased like this length of flowtube between Dewar flask and the first sample cell, can reduce the heat conduction to the first sample cell temperature stability impact; The first cooling tube is embedded on the first sample pool wall in a spiral manner, can make the cooling even more rapidly of the first sample cell, reduces its thermograde.
For connecting the light path member of three monochromatic light road single-pass absorption cells, vacuum pumping opening, impermeability is good, according to requirement of experiment, can pour certain blanket gas or vacuumize it, can reduce like this impact of ambient atmos on the experiment light path, improve accuracy and the stability of experimental system; According to actual needs, flexible light path member, adjust optical path length.
Three monochromatic light road single-pass absorption cells connect by the light path member and are " one " font to be arranged, by the temperature to three absorption cells, controlled, make it respectively in low temperature, middle temperature, normal temperature state, by three absorption cell sample gas volumetric mixture ratios, pressure are controlled, complete the simulation to differing heights atmospheric envelope temperature, pressure, gas concentration, and then complete the simulation of vertical atmospheric environment.
By many experiments, change experiment parameter, summarize main Atmospheric molecular absorption spectroscopy rule, and according to experimental result, the vertical atmospheric environment absorption cell of lab simulation device is carried out to modeling, the testing model performance.
The accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present invention.
Fig. 2 is low temperature absorption pond inner structure schematic diagram.
Fig. 3 is middle temperature absorption cell structural representation.
Fig. 4 is normal temperature absorption cell structural representation.
Fig. 5 is serial connection light path member schematic diagram.
Embodiment
As Fig. 1-5, a kind of multiparameter controllable temperature is simulated vertical atmospheric environment absorption cell device, the low temperature, middle temperature, the normal temperature absorption cell 1,2,3 that comprise the monochromatic light road single-pass that three controlled serial connections of parameter arrange, low temperature, middle temperature absorption cell 1,2 connect by the first light path member 4, and middle temperature, normal temperature absorption cell 2,3 connect by the second light path member 5, low temperature absorption pond 1 includes the first vacuum shell 6, be provided with the first sample cell 7 in the first vacuum shell 6, Dewar flask 8, Dewar flask 8 and the first vacuum shell 6 top covers link together, the first sample cell 7 is connected with the first vacuum shell 6 top covers by suspension rod 9 and is suspended on Dewar flask 8 belows, on the wall of the first sample cell 7, spiral embeds the first cooling tube 10, one end of the first cooling tube 10 on Dewar flask 8 and the first sample cell 7 is connected with liquid nitrogen stream buret 11, the top of the first vacuum shell 6 is provided with liquid nitrogen import 12, sample inlet, liquid nitrogen import 12, sample inlet is respectively by pipeline and Dewar flask 8, the first sample cell 7 connects, the pipeline of liquid nitrogen import 12 is provided with pressure valve 13, safety valve 14, the pipeline of sample inlet is provided with sample inlet valve 15, be connected with liquid nitrogen flow valve 16 by pipeline on liquid nitrogen stream buret 11, the other end of the first cooling tube 10 of the first sample cell 7 is connected with nitrogen outlet valve 17 by pipeline, have two the first light holes on the first vacuum shell 6 walls, the two ends of the first sample cell are respectively equipped with the first sample cell window, two the first light holes, two the first sample cell windows point-blank, middle temperature absorption cell 2 includes the second vacuum shell 19, the second sample cell 20, the two ends of the second vacuum shell 19 are respectively equipped with the second light hole 21, the second sample cell 20 two ends be respectively equipped with the second sample cell window 22, on the wall of the second sample cell 20, spiral embeds the second cooling tube 23, the second vacuum shell 19 is provided with cooling liquid inlet 24, cooling liquid outlet 25, the two ends of the second cooling tube 23 respectively with cooling liquid inlet 24, cooling liquid outlet 25 connects, be provided with sub-cooled pump 26 between cooling liquid inlet 24 and cooling liquid outlet 25, have the second sample cell air intake opening 27 be communicated with the second sample cell 20 on the second vacuum shell 19, normal temperature absorption cell 3 includes the 3rd vacuum shell 28, the 3rd sample cell 29, the two ends of the 3rd vacuum shell 28 are respectively equipped with the 3rd light hole 30, the two ends of the 3rd sample cell 29 are respectively equipped with on the 3rd sample cell window 31, the three vacuum shell 28 and have the 3rd sample cell air intake opening 32 be communicated with the 3rd sample cell 29, first, second light path member 4,5 has included large cylinder 33, the middle part of large cylinder 33 is provided with vacuum pumping opening 34, be equipped with two little cylindrical shells 35 that can be free to slide to two ends respectively in large cylinder 33, the front end sleeve of little cylindrical shell 35 is equipped with rubber ring 36, the inwall close contact of the outer wall of rubber ring 36 and large cylinder 33.
First, second, third sample cell window first, second, third of low temperature, middle temperature, normal temperature absorption cell 1,2,3 and light hole are point-blank as laser channeling and be respectively equipped with wedge shape calcium fluoride eyeglass 18.
The liquid nitrogen stream buret 11 that the Dewar flask 8 in low temperature absorption pond 1 and sample cell are 7 adopts the inverted U pipe.
Low temperature, middle temperature, normal temperature absorption cell 1,2,3 temperature, pressure, gas concentration, humidity are set respectively; Low temperature absorption pond 1 simulation upper atmosphere environment, middle temperature absorption cell 2 simulation middle atmosphere environment, normal temperature absorption cell 3 simulation lower atmosphere layer environment, with this environment of atmospheric envelope in the lab simulation vertical distribution.
The internal diameter of the large cylinder 33 of first, second light path member 4,5 is that 8 cm, length are 15cm, the two ends of large cylinder 33 overlap respectively that two internal diameters are arranged is the little cylindrical shell 35 that 4 cm, length are 7 cm, whole light path member adopts piston cylinder operator, and length is adjustable between 17 ~ 27 cm.
This apparatus main body is three monochromatic light road single-pass absorption cells and two connection light path members.The low temperature absorption pond adopts the static type of cooling to lower the temperature to sample cell, and liquid coolant is liquid nitrogen, regulates pressure valve the Dewar flask internal pressure is controlled, and regulates liquid nitrogen flow valve controllable flow to sample cell liquid nitrogen flow velocity; Regulate the nitrogen outlet valve and control nitrogen flow rate, can make temperature regulate between room temperature～100 K, and be stabilized in the arbitrary temp place.
Middle temperature absorption cell adopts the circulating cooling mode to lower the temperature to sample cell, the liquid coolant flowed out from the sub-cooled pump enters absorption cell by import, flows out absorption cell by outlet, then enters the sub-cooled pump, the mixed liquor that liquid coolant is alcohol and water, the thermal tuning scope is room temperature～240 K.
The first light path member left end is together with light-emitting window place, low temperature absorption pond flange seal, and right-hand member and middle temperature pond light path suction flange are sealed; The second light path member left end is together with the flange seal of light path exit, middle temperature pond, and right-hand member and normal temperature pond light path suction flange are sealed.Adjust each sample cell central shaft coaxial; According to requirement of experiment, the light path member is vacuumized or pour nitrogen, by regulation and control, make three absorption cell sample cell temperature differences, the pressure difference, the gas concentration difference, the humidity difference, complete the indoor simulation to the vertical atmospheric environment of reality.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2017116330A1 (en) * | 2015-12-28 | 2017-07-06 | Gebze Teknik Universitesi | Liquid nitrogen and liquid helium flow measurement chamber with optical window |
| CN107064004A (en) * | 2017-06-08 | 2017-08-18 | 东北石油大学 | Optical characteristic measurement optics cavity under a kind of liquid medium low temperature environment |
| CN109991197A (en) * | 2017-12-29 | 2019-07-09 | 无锡奥芬光电科技有限公司 | Measure the spectrophotometer and method of fluorescent characteristic |
| CN114279496A (en) * | 2021-12-17 | 2022-04-05 | 中国科学院长春光学精密机械与物理研究所 | Gas optical isolation device and method thereof |
| CN118190869A (en) * | 2024-03-04 | 2024-06-14 | 浙江大学 | Optical probe for in-situ detection of high-temperature gas in flue |
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| CN114279496A (en) * | 2021-12-17 | 2022-04-05 | 中国科学院长春光学精密机械与物理研究所 | Gas optical isolation device and method thereof |
| CN118190869A (en) * | 2024-03-04 | 2024-06-14 | 浙江大学 | Optical probe for in-situ detection of high-temperature gas in flue |
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