CN103424358B - Multi-parameter controllable temperature is simulated vertical atmospheric environment absorption cell device - Google Patents
Multi-parameter controllable temperature is simulated vertical atmospheric environment absorption cell device Download PDFInfo
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- CN103424358B CN103424358B CN201310290418.6A CN201310290418A CN103424358B CN 103424358 B CN103424358 B CN 103424358B CN 201310290418 A CN201310290418 A CN 201310290418A CN 103424358 B CN103424358 B CN 103424358B
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Abstract
The invention discloses a kind of multi-parameter controllable temperature and simulate 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 of three controlled serial connections settings of parameter, 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. By regulating temperature, the gas volume mixing ratio of single absorption cell, can be in parameters such as the atmospheric thermograde of experiment lab simulation vertical height, barometric gradients; Application the present invention can carry out Measurement and analysis to Atmospheric molecular absorption spectroscopy parameter in conjunction with direct absorption spectroscopy techniques, and the vertical atmospheric transmittance of inverting on this basis, concludes the rule of Atmospheric molecular absorption spectroscopy; Due to more stable device of indoor environment, to have precision high, the advantages such as good stability, and this device has great significance for the research of atmospheric optics.
Description
Technical field
The present invention relates to a kind of experimental provision for atmospheric optics Absorption Study, be specifically related to a kind of multi-parameter controllable temperatureSimulate vertical atmospheric environment absorption cell device.
Background technology
Atmosphere temperature is in vertical direction " S " type and distributes, and each layer of gaseous species, content and pressure are also to some extentDifferent. 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 experimentData have very large uncertainty; In laboratory, often adopt single absorption cell research Atmospheric molecular absorption spectroscopy parameter, itsThe temperature of sample cell, pressure, gas concentration can only be in particular value, and the gradient that cannot simulate the each layer parameter of vertical atmosphere distributes.In the time of research whole atmosphere spectrum parameter, can only carry out inverting in conjunction with many experiments result, both wasted time and energy like this, can not keep away againExempt to cause system testing error. Therefore, laboratory experiment needs a set of absorption cell system of simulating each layer of environment of vertical atmosphereBulk cargo is put.
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, performance is steadyFixed absorption cell system and device; That three temperature, the controlled monochromatic light road single-pass absorption cell of pressure and other parameters are passed through to two light pathsMember links together and realizes.
The technical solution used in the present invention is:
A kind of multi-parameter controllable temperature is simulated vertical atmospheric environment absorption cell device, it is characterized in that: comprise that three parameters canLow temperature, middle temperature, the normal temperature absorption cell of the monochromatic light road single-pass that control serial connection arranges, low temperature, middle temperature absorption cell are by the first light path memberConnect, middle temperature, normal temperature absorption cell connect by the second light path member; Described low temperature absorption pond includes the first vacuum shell, theIn one vacuum shell, be provided with the first sample cell, Dewar bottle, Dewar bottle and the first vacuum shell top cover link together, and the first sample cell is logicalCross suspension rod and be connected with the first vacuum shell top cover and be suspended on Dewar bottle below, on the wall of the first sample cell spiral embed have first coldBut pipe, one end of the first cooling tube on Dewar bottle and the first sample cell is connected with inverse u shape liquid nitrogen stream buret, the first vacuum shellTop be provided with liquid nitrogen import, sample inlet, liquid nitrogen import, sample inlet are respectively by pipeline and Dewar bottle, the first sample cellConnect, the pipeline of liquid nitrogen import is provided with pressure valve, safety valve, and the pipeline of sample inlet is provided with sample inlet valve, liquid nitrogen streamOn buret, be connected with liquid nitrogen flow valve by pipeline, the other end of the first cooling tube of the first sample cell is connected with nitrogen by pipelineGas outlet valve, has 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 cellWindow, two the first light holes, two the first sample cell windows are point-blank; Described middle temperature absorption cell includes secondVacuum shell, the second sample cell, the two ends of the second vacuum shell are respectively equipped with the second light hole, and the two ends of the second sample cell are respectively equipped withThe second sample cell window, on the wall of the second sample cell, spiral embeds has the second cooling tube, the second vacuum shell to be provided with cooling fluid to enterMouth, cooling liquid outlet, the two ends of the second cooling tube are connected with cooling liquid inlet, cooling liquid outlet respectively, cooling liquid inlet and coldBut between liquid outlet, be provided with sub-cooled pump, in the second vacuum shell, have the second sample cell air inlet being communicated with the second sample cellMouthful; Described normal temperature absorption cell includes the 3rd vacuum shell, the 3rd sample cell, and the two ends of the 3rd vacuum shell are respectively equipped with threewayUnthreaded hole, the 3rd sample cell two ends be respectively equipped with the 3rd sample cell window, in the 3rd vacuum shell, have and the 3rd sample cell connectThe 3rd logical sample cell air inlet; First, second described light path member has included large cylinder, and the middle part of large cylinder is provided with veryEmpty bleeding point, is 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 rubberRing, the inwall close contact of the outer wall of rubber ring and large cylinder.
Described multi-parameter controllable temperature is simulated vertical atmospheric environment absorption cell device, it is characterized in that: described low temperature, inFirst, second, third sample cell window first, second, third of temperature, normal temperature absorption cell and light hole are point-blank alsoAnd be respectively equipped with wedge shape calcirm-fluoride eyeglass.
Described multi-parameter controllable temperature is simulated vertical atmospheric environment absorption cell device, it is characterized in that: described low temperature is inhaledLiquid nitrogen stream buret between Dewar bottle and the sample cell in receipts pond adopts inverted U pipe.
Described multi-parameter controllable temperature is simulated vertical atmospheric environment absorption cell device, it is characterized in that: arrange respectively low temperature,Middle temperature, normal temperature absorption cell temperature, pressure, gas concentration, humidity; Low temperature absorption pond simulation upper atmosphere environment, middle temperature absorption cellSimulation middle atmosphere environment, normal temperature absorption cell simulation lower atmosphere layer environment, the atmosphere ring with this in lab simulation vertical distributionBorder.
Described multi-parameter controllable temperature is simulated vertical atmospheric environment absorption cell device, it is characterized in that: described first,The internal diameter of the large cylinder of two light path members is that 8cm, length are 15cm, the two ends of large cylinder overlap respectively have two internal diameters be 4cm,Length is the little cylindrical shell of 7cm, and whole light path member adopts piston cylinder operator, and length is adjustable between 17 ~ 27cm.
Advantage of the present invention is:
The present invention utilizes suspension rod that the first sample cell is suspended under Dewar bottle, makes whole apparatus structure compactness attractive in appearance; ThenDewar bottle and the first sample cell are encapsulated in the first vacuum shell, on the first vacuum shell wall, have two the first light holes, firstLight hole and the first sample cell window all adopt the sealing of wedge shape calcirm-fluoride window; Liquid nitrogen flow between Dewar bottle and the first sample cellPipe adopts inverse u shape structure, has increased like this length of flowtube between Dewar bottle and the first sample cell, can reduce heat conductionOn 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 first sampleProduct pond cooling more rapidly evenly, reduce its thermograde.
For connecting the light path member of three monochromatic light road single-pass absorption cells, vacuum pumping opening, air-tightness is good, according to experimentRequirement, can pour certain protective gas or vacuumize it, can reduce like this impact of ambient atmos on experiment light path, improves realThe accuracy of check system and stability; According to actual needs, flexible light path member, adjusts optical path length.
Three monochromatic light road single-pass absorption cells connect by light path member and are " one " font to be arranged, by three absorption cellsTemperature control, make it respectively in low temperature, middle temperature, normal temperature state, by mixed to three absorption cell sample gas volumesComposition and division in a proportion, pressure are controlled, and complete the simulation to differing heights atmosphere temperature, pressure, gas concentration, and then complete vertical largeThe simulation in compression ring border.
By many experiments, change experiment parameter, summarize main Atmospheric molecular absorption spectroscopy rule, and according to experiment knotFruit carries out modeling, testing model performance to the vertical atmospheric environment absorption cell of lab simulation device.
Brief description of the drawings
Fig. 1 is general structure schematic diagram of the present invention.
Fig. 2 is low temperature absorption pond internal 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.
Detailed description of the invention
As Fig. 1-5, a kind of multi-parameter controllable temperature is simulated vertical atmospheric environment absorption cell device, comprises three controlled strings of parameterConnect the low temperature of the monochromatic light road single-pass of setting, middle temperature, normal temperature absorption cell 1,2,3, low temperature, middle temperature absorption cell 1,2 are by the first light pathMember 4 connects, 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 shellIn 6, the first vacuum shell 6, be provided with the first sample cell 7, Dewar bottle 8, Dewar bottle 8 and the first vacuum shell 6 top covers link together, theOne sample cell 7 is connected and is suspended on Dewar bottle 8 belows with the first vacuum shell 6 top covers by suspension rod 9, on the wall of the first sample cell 7Spiral embeds the first cooling tube 10, and one end of the first cooling tube 10 on Dewar bottle 8 and the first sample cell 7 is connected with liquid nitrogen streamThe top of buret 11, the first vacuum shell 6 is provided with liquid nitrogen import 12, sample inlet, and liquid nitrogen import 12, sample inlet are respectively by pipeRoad is connected with Dewar bottle 8, the first sample cell 7, and the pipeline of liquid nitrogen import 12 is provided with pressure valve 13, safety valve 14, sample inletPipeline be provided with sample inlet valve 15, on liquid nitrogen stream buret 11, be connected with liquid nitrogen flow valve 16, the first sample cells 7 by pipelineThe other end of the first cooling tube 10 be connected with on nitrogen outlet valve 17, the first vacuum shell 6 walls and have two first by pipelineLight hole, 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 windowsMouth point-blank; Middle temperature absorption cell 2 includes the two ends of the second vacuum shell 19, the second sample cell 20, the second vacuum shell 19Be respectively equipped with the second light hole 21, the second sample cells 20 two ends be respectively equipped with the second sample cell window 22, the second sample cellsOn 20 wall, spiral embeds has the second cooling tube 23, the second vacuum shell 19 to be provided with cooling liquid inlet 24, cooling liquid outlet 25, theThe two ends of two cooling tubes 23 are connected with cooling liquid inlet 24, cooling liquid outlet 25 respectively, cooling liquid inlet 24 and cooling liquid outletBetween 25, be provided with and in sub-cooled pump 26, the second vacuum shell 19, have the second sample cell air inlet being communicated with the second sample cell 2027; The two ends that normal temperature absorption cell 3 includes the 3rd vacuum shell 28, the 3rd sample cell 29, the three vacuum shell 28 are respectively equipped with the 3rdThe two ends of light hole 30, the three sample cells 29 are respectively equipped with in the 3rd sample cell window 31, the three vacuum shell 28 and have and the 3rdThe 3rd sample cell air inlet 32 that sample cell 29 is communicated with; First, second light path member 4,5 has included large cylinder 33, large cylinder33 middle part is provided with vacuum pumping opening 34, is equipped with two little cylindrical shells 35 that can be free to slide to two ends respectively in large cylinder 33, littleThe front end sleeve of 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 andLight hole is point-blank as laser channeling and be respectively equipped with wedge shape calcirm-fluoride eyeglass 18.
Liquid nitrogen stream buret 11 between Dewar bottle 8 and the sample cell 7 in low temperature absorption pond 1 adopts 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 1Simulation upper atmosphere environment, middle temperature absorption cell 2 is simulated middle atmosphere environment, and normal temperature absorption cell 3 is simulated lower atmosphere layer environment, with thisAt the atmosphere environment of lab simulation vertical distribution.
The internal diameter of the large cylinder 33 of first, second light path member 4,5 is that 8cm, length are 15cm, the two ends of large cylinder 33To have two internal diameters be the little cylindrical shell 35 that 4cm, length are 7cm to cover respectively, and whole light path member adopts piston cylinder operator, and length existsAdjustable between 17 ~ 27cm.
This apparatus main body is three monochromatic light road single-pass absorption cells and two connection light path members. Low temperature absorption pond adopts quietThe state type of cooling is lowered the temperature to sample cell, and cooling fluid is liquid nitrogen, regulates pressure valve to control Dewar bottle internal pressure, regulates liquid nitrogenFlow valve controllable flow is to sample cell liquid nitrogen flow velocity; Regulate nitrogen outlet valve control nitrogen flow rate, can make temperature in room temperature～100Between K, regulate, and be stabilized in arbitrary temp place.
Middle temperature absorption cell adopts circulating cooling mode to lower the temperature to sample cell, and the cooling fluid flowing out from sub-cooled pump is by importEnter absorption cell, flow out absorption cell, then enter sub-cooled pump by outlet, cooling fluid is the mixed liquor of alcohol and water, and temperature is adjustedHumorous scope is room temperature～240K.
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 are enteredMouth flange seal together; The second light path member left end together with the flange seal of light path exit, middle temperature pond, right-hand member and normal temperaturePond light path suction flange is sealed. Adjust each sample cell central shaft coaxial; According to requirement of experiment, light path member is taken out veryEmpty or pour nitrogen, by regulation and control, make three absorption cell sample cell temperature differences, pressure difference, gas concentration difference, humidity is notWith, complete the indoor simulation to the vertical atmospheric environment of reality.
Claims (3)
1. multi-parameter controllable temperature is simulated a vertical atmospheric environment absorption cell device, it is characterized in that: comprise that three parameters are controlledLow temperature, middle temperature, the normal temperature absorption cell of the monochromatic light road single-pass that serial connection arranges, low temperature, middle temperature absorption cell connect by the first light path memberConnect, middle temperature, normal temperature absorption cell connect by the second light path member; Described low temperature absorption pond includes the first vacuum shell, firstIn vacuum shell, be provided with the first sample cell, Dewar bottle, Dewar bottle and the first vacuum shell top cover link together, and the first sample cell passes throughSuspension rod is connected with the first vacuum shell top cover and is suspended on Dewar bottle below, on the wall of the first sample cell spiral embed have first coolingPipe, one end of the first cooling tube on Dewar bottle and the first sample cell is connected with liquid nitrogen stream buret, and establish at the top of the first vacuum shellHave liquid nitrogen import, sample inlet, liquid nitrogen import, sample inlet are connected with Dewar bottle, the first sample cell by pipeline respectively, liquid nitrogenThe pipeline of import is provided with pressure valve, safety valve, and the pipeline of sample inlet is provided with sample inlet valve, on liquid nitrogen stream buret, passes throughPipeline is connected with liquid nitrogen flow valve, and the other end of the first cooling tube of the first sample cell is connected with nitrogen outlet valve by pipeline,On the first vacuum shell wall, have two the first light holes, the two ends of the first sample cell are respectively equipped with the first sample cell window, twoThe first light hole, two the first sample cell windows are coaxial; Described middle temperature absorption cell includes the second vacuum shell, the second samplePond, the two ends of the second vacuum shell are respectively equipped with the second light hole, and 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, and the second vacuum shell is provided with cooling liquid inlet, cooling liquid outlet, theThe two ends of two cooling tubes are connected with cooling liquid inlet, cooling liquid outlet respectively, between cooling liquid inlet and cooling liquid outlet, are provided withLow-temperature circulating coolant pump, has the second sample cell air inlet being communicated with the second sample cell in the second vacuum shell; Described normal temperatureAbsorption cell includes the 3rd vacuum shell, the 3rd sample cell, and the two ends of the 3rd vacuum shell are respectively equipped with the 3rd light hole, the 3rd sampleThe two ends in pond are respectively equipped with the 3rd sample cell window, have the 3rd sample cell being communicated with the 3rd sample cell and enter in the 3rd vacuum shellGas port; First, second described light path member has included large cylinder, and the middle part of large cylinder is provided with vacuum pumping opening, large cylinderIn be equipped with two little cylindrical shells that can be free to slide to two ends respectively, the front end sleeve of little cylindrical shell is equipped with rubber ring, the outer wall of rubber ringInwall close contact with large cylinder; Liquid nitrogen stream buret between Dewar bottle and the sample cell in described low temperature absorption pond adopts" U " type pipe;
Temperature, pressure, gas concentration, the humidity in low temperature absorption pond are set respectively, and the temperature of middle temperature absorption cell, pressure, gas are denseDegree, humidity, and the temperature of normal temperature absorption cell, pressure, gas concentration, humidity; Low temperature absorption pond simulation upper atmosphere environment, inTemperature absorption cell simulation middle atmosphere environment, normal temperature absorption cell simulation lower atmosphere layer environment, with this in lab simulation vertical distributionAtmosphere environment.
2. multi-parameter controllable temperature according to claim 1 is simulated vertical atmospheric environment absorption cell device, it is characterized in that: instituteThe second sample cell window of the first sample cell window in the low temperature absorption pond of stating, middle temperature absorption cell, the 3rd sample of normal temperature absorption cellProduct pond window and first, second, third light hole are point-blank and be respectively equipped with wedge shape calcirm-fluoride eyeglass.
3. multi-parameter controllable temperature according to claim 1 is simulated vertical atmospheric environment absorption cell device, it is characterized in that: instituteThe internal diameter of the large cylinder of first, second light path member of stating is that 8cm, length are 15cm, and the two ends of large cylinder are overlapped respectively twoInternal diameter is the little cylindrical shell that 4cm, length are 7cm, and whole light path member adopts piston cylinder operator, and length can between 17 ~ 27cmAdjust.
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| TR201517168A2 (en) * | 2015-12-28 | 2017-01-23 | Gebze Teknik Ueniversitesi | LIQUID NITROGEN AND LIQUID HELIUM FLOW MEASURING TANK WITH OPTIC WINDOW |
| CN107064004B (en) * | 2017-06-08 | 2019-08-23 | 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 |
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