CN204758472U - High -melting -point material granule phase transition process high temperature spectrum radiation characteristic measurement system - Google Patents
High -melting -point material granule phase transition process high temperature spectrum radiation characteristic measurement system Download PDFInfo
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- CN204758472U CN204758472U CN201420667009.3U CN201420667009U CN204758472U CN 204758472 U CN204758472 U CN 204758472U CN 201420667009 U CN201420667009 U CN 201420667009U CN 204758472 U CN204758472 U CN 204758472U
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Abstract
The utility model discloses a high -melting -point material granule phase transition process high temperature spectrum radiation characteristic measurement system, elementary air cleaner passes through pipe connection refrigeration dryer, accurate air cleaner, the surge tank, mass flow controls the meter, mass flow control meter is through wire connection director, mass flow control meter connects gradually online air heater and spray tube through the pipeline, be equipped with the spray tube on the spray tube base, it is indoor that high temperature is arranged in to spray tube base and spray tube, high temperature roof portion and bottom are equipped with two laser beam windows respectively, the laser that infrared laser and ultraviolet laser sent shines the laser beam window through the speculum, high greenhouse still is equipped with the quartz glass window, ICCD spectrum appearance and pyrometer pass through the camera lens and aim at the quartz glass window, infrared laser is connected through the wire respectively to pulse time delay generator, ultraviolet laser and controller. The beneficial effects of the utility model are that can carry out high -melting -point material granule phase transition process high temperature radiation characteristic measures.
Description
Technical field
The utility model belongs to field of material technology, relates to a kind of materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system.
Background technology
The transition of material is the important stage in the industrial processs such as glass manufacture, steel and iron industry, semiconductor, Aero-Space, relates to multiple fields such as chemical industry, metallurgy, space flight, military affairs.The radiative property of material in phase transition process is important research object.Development experimental technique and method for numerical simulation are two main method of research material phase transition process hyperthermia radiation characteristic.Although the experimental study in the past in 50 years in high-temperature molten-state material is a lot, but limited success, along with the difficulty being difficult to overcome when the high-temperature molten-state sample be opposite in traditional heating stove in container is studied, such as: sample and container exist chemical reaction, sample is easily by capsule contamination, because heterogeneous forming core effect is difficult to obtain deeply undercooling, be difficult to the high temperature of arrival more than 1500 DEG C.
Suspension melting clotting method is different from traditional contact melting and solidifies, and is that a kind of material that makes is from being melted to process of setting the method remaining and do not contact with wall.This method can prevent melt contacts from polluting, and suppresses heterogeneous nucleation, and obtain deeply undercooling and rapid solidification effect, be a kind of important method of research and preparation new material, application prospect is extensive.Current suspension material technology mainly contains: electrostatic suspension, electromagnetic suspension, acoustic levitation and pneumatic suspension etc.
Above-mentioned various method has respective limitation in application: electrostatic suspension is current state-of-the-art suspension technology, is suitable for keeping enough static charges to realize the material suspended on surface, and device is very complicated, and it is more difficult to operate; Electromagnetic suspension technology is only applicable to conductor and semiconductor material, and suspension heating can not independently control; Acoustic levitation can suspend any material in principle, but suspending power is less, can not work under vacuo.At present, in the measurement of diffusing particle infrared spectrum characteristics, pneumatic suspension technology has started to be applied.Because the size of particle is too little, the thermophysical property measurement of single particle is difficult to realize, and normally in cavity, utilizes air-flow to blow afloat particle cluster through heating, realizes suspending, measure suspended state particle radiation characteristic issues.The heating particulates temperature of the method is not very high, is not suitable for the radiation characteristic in the single grade size refractory material phase transformation process of research, is difficult to the cooling rate control that real high-temperature fusant is cooled to solidification stages.
Realize materials with high melting point phase transition process pneumatic suspension and carry out the Major Difficulties of Radiation and require as follows:
(1) stable suspersion state: undertaken in the process of testing by pneumatic suspension method; air-flow is highly stable, due to by suspended particle or drop smaller, generally only have 30 ~ 50mg; diameter 1 ~ 3mm, even if small flow rate fluctuation also may destroy suspended state.When experimental period is long, requirement can long-time stable suspend, and experiment relates to the phase transformation of material, and material shape and weight, also in continuous change, therefore also must guarantee state per sample, carry out continuous fine adjustment to air flow rate.
(2) melt refractory material: requirement of experiment rapid melting materials with high melting point, heating-up temperature will reach 3000K, and cooling fast after requiring material to melt, general heating means are difficult to realize.
(3) thermograde is reduced: in the process suspending heating, can temperature difference be there is in material different piece, mainly the impact of air-flow on the convection current cooling effect bottom material and laser incident direction causes, and when temperature non is larger, experiment may be caused to carry out.How to reduce the thermograde of experiment material, be also the problem needing to solve as far as possible.
(4) reduce background interference: in phase-change material Radiation, need the impact considering background radiation, such as, can have an impact to the measurement of the infrared spectroscopy signals of testing sample when taking infrared laser as heat source material, must remove.
Utility model content
The purpose of this utility model is to provide a kind of materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system, solves existing measuring equipment complex structure, cannot carry out the problem of materials with high melting point particle phase transition process hyperthermia radiation feature measurement.
The technical scheme that the utility model adopts comprises piston type air compressor, piston type air compressor connects primary air filter by pipeline, primary air filter connects freezing type drier by pipeline, freezing type drier connects fine air filtrator by pipeline, fine air filtrator, buffer tank, nitrogen cylinder is connected four-way valve with helium tank respectively by pipeline, buffer tank connects voltage stabilizer by pipeline, voltage stabilizer is by pipeline quality of connection flow control meter, mass rate controls meter and passes through wire connection controller, mass rate controls meter and connects online air heater by pipeline, online air heater is by air inlet pipeline that pipeline connecting spray nozzle pedestal is installed and cooling line connector, air inlet pipeline is also connected Water-cooling circulating machine by cool cycles pipeline with cooling line connector, spout base is provided with jet pipe, spout base and jet pipe are placed in hot room, hot room top and bottom are respectively equipped with laser beam window I and laser beam window II, the laser that infrared laser sends is by catoptron irradiating laser light beam window I, the laser that ultraviolet laser sends is by catoptron irradiating laser light beam window II, silica glass window I and silica glass window II are installed in laser beam window I both sides, ICCD and ultraviolet (infrared) spectrometer pass through wire connection controller, ICCD and ultraviolet (infrared) spectrometer are by alignment lens silica glass window I, silica glass window II aimed at by pyrometer, pyrometer passes through wire connection controller, pulse delay generator connects infrared laser respectively by wire, ultraviolet laser and controller, hot room also connects vaccum-pumping equipment by pipeline.
Further, described spout base and nozzle wall spraying insulating moulding coating, this coating has comparatively low thermal conductivity, utilizes the low heat conductivity of air in pottery and cenosphere to reduce base material to incoming flow heat absorption, ensures to possess higher temperature from the gas of jet pipe ejection.
Further, the sidewall of described jet pipe is provided with the small through hole of inclination, and air-flow is by flow field non complete symmetry during nozzle throat, and when laboratory sample suspends, its turning axle and vertical axes exist certain inclination angle.
Further, described laser beam window I and laser beam window II are provided with high transmission CO
2the Zn-Cs single crystal glass of laser and the ultraviolet melting quartz glass of transmission 355nm laser.
Further, the laser that described infrared laser sends is 10.6 μm, and the laser that described ultraviolet laser sends is 355nm.
Further, neutron scattering window has been pre-seted on the left of described hot room.
Further, the pipeline between described nitrogen cylinder and described four-way valve is provided with decompression venting valve, reduces pressure to the nitrogen pressure of nitrogen cylinder conveying.
The beneficial effects of the utility model are that structure is simple, can carry out materials with high melting point particle phase transition process hyperthermia radiation feature measurement.
Accompanying drawing explanation
Fig. 1 is the utility model materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system architecture schematic diagram;
Fig. 2 is the utility model materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system gas generating means partial schematic diagram;
Fig. 3 is the utility model materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry flow system flow control device partial schematic diagram;
Fig. 4 is the utility model materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system suspension device, laser heating device and Radiation biodosimetry device section schematic diagram.
1. piston type air compressors in figure, 2. primary compression air strainer, 3. freezing type drier, 4. accurate compressed-air filter, 5. buffer tank, 6. voltage stabilizer, 7. mass flow controller, 8. online air heater, 9.ICCD and ultraviolet (infrared) spectrometer, 10. pyrometer, 11. infrared lasers, 12. controllers, 13. jet pipes, 14. vaccum-pumping equipments, 15. pulse delay generators, 16. catoptrons, 17. hot rooms, 18. Water-cooling circulating machines, 19. ultraviolet lasers, 20. nitrogen cylinders, 21. helium tanks, 22. ball valves, 23. four-way valves, 24. decompression venting valves, 25. neutron scattering windows, 26. silica glass windows I, 27. laser beam window I, 28. silica glass windows II, 29. vacuumize connector, 30. laser beam windows II, 31. spout base, 32. air inlet pipelines and cooling line connector, 33. cool cycles pipelines.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
The utility model is based on pneumatic suspension material, the phase transition process Radiation system of two waveband laser heating method, control gas flow, it is made to spray from jet pipe 13, sample is held up by air-flow, adopt infrared, ultraviolet dual wave-band LASER HEATING laboratory sample, make sample melting after under capillary effect, be shrunk to a more regular spheroid, the stable suspersion of sample can be reached by controlling gas flow.In conjunction with different laser instruments, use ultraviolet spectrometer (UVS), infrared spectrometer to measure material radiation characteristic, the impact of background radiation on band signal to be measured can be eliminated.The utility model pneumatic suspension device comprises gas generating unit, volume control device and levitation device; Gas generating unit provides pressurized air, nitrogen, helium gas jet for whole system.
Concrete, as shown in Figure 1, show critical piece and the connected mode of whole materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system.Whole system is divided into pneumatic suspension device, laser heating device and Radiation biodosimetry device.Fig. 2 is gas generating unit schematic diagram, Fig. 3 is volume control device schematic diagram, Fig. 4 is levitation device, laser heating device and Radiation biodosimetry device schematic diagram.
Be now that suspension source of the gas is to illustrate the working method of pneumatic suspension device with air.As shown in Figure 1, air in piston type air compressor 1 suction chamber, first filter through primary compression air strainer 2 after pressurization, pollutant in removing pressurized air, the such as solid granulates such as dust, iron filings, lubricant, liquid particles such as the condensation globule, mist vapour etc., enter dry removing moisture in freezing type drier 3 afterwards, then filter further through fine air filtrator 4, complete pressurization and the dry decontamination process of air.Piston type air compressor 1 itself has certain pressure stabilization function, but air-flow is also unstable, can not meet the demands, must ensure the airshed long-time stable entered in jet pipe 13 in experiment, and can stepless control and adjustment.The gas-holder of piston type air compressor 1 is smaller, enough air capacities can not be held, so be provided with buffer tank 5 and voltage stabilizer 6 after fine air filtrator 4, doing benefit is like this can store many air on the one hand, reduce the number of times that piston type air compressor 1 opens and closes automatically, can air pressure fluctuation be reduced again on the other hand, stablize air pressure.When the air passage of four-way valve 22 is opened, have the dried and clean air-flow of certain pressure just to be entered in buffer tank 5 by pipeline, air enters flow control system.
Mass rate controls meter 7 and is connected with controller 12, and according to size and the pattern of different materials sample, accurate flow control, to reach the object of stable suspersion.Air-flow after stable is heated by online air heater 8, and according to different situations, gas flow temperature can regulate continuously between 20 DEG C ~ 120 DEG C.By bimetallic thermograph displays temperature, heater body adopts high-precision sensor and direct heater coil, when air-flow and pressure change, heater coil and temperature sensor energy cooperating, ensure that the air themperature exported is constant, self there is filtering function simultaneously, ensure to export clean pressurized air.The benefit of mating online air heater 8 is, improves and maintains gas flow temperature, blowing afloat laboratory sample with the thermal current with uniform temperature, reducing the convection current cooling effect of air-flow, reducing the thermograde of sample different piece.In order to reduce air-flow heat loss, what adopt between online air heater 8 to spout base 31 air admission hole is utilidor, and at spout base 31 gas channel inwall and jet pipe 13 inner-wall spraying insulating moulding coating, this coating has comparatively low thermal conductivity, utilize the low heat conductivity of air in pottery and cenosphere to reduce base material to incoming flow heat absorption, ensure that the gas sprayed from jet pipe 13 possesses higher temperature.
Hot room 17 top and bottom are provided with laser beam window I 27 and laser beam window II 30, and silica glass window I 26 and silica glass window II 28 are installed in laser beam window I 27 both sides.Pressurized air introduces hot room 17 via air inlet pipeline and cooling line connector 32, finally sprays from jet pipe 13.During laser beam irradiation experiment material, inevitably have heat effect to jet pipe 13, in order to prevent jet pipe and pedestal overheated, adopt Water-cooling circulating machine 18 by cooling water circulation pipeline 32 cooling spray pipe pedestal 31.When levitation gas is inert gas, generally by vacuumizing connector 29, hot room 17 is evacuated to 5 × 10 with vaccum-pumping equipment 14
-4after Pa, then pass into inert gas, test.
Effuser device forms primarily of the jet pipe 13 of aluminium alloy and aldary spout base 31, according to different suspension materials and requirement of experiment, conveniently can replace multi-form jet pipe 13.Jet pipe 13 adopts convergent flaring form, inner-wall spraying insulating moulding coating.In common jet pipe, the spheric grain of suspension or spherical droplets are rotating, are normally similar to and rotate along vertical axes.If adopt laser irradiation experiment material from top to bottom, although material constantly rotates, material lower surface is owing to directly can not receive laser irradiation, and temperature is lower, and this is the one of the main reasons that thermograde produces.Therefore in the utility model, jet pipe 13 sidewall machined the small through hole of inclination, air-flow is by flow field during nozzle throat by non complete symmetry, and when laboratory sample suspends, its turning axle and vertical axes exist certain inclination angle, LASER HEATING area obviously increases, and temperature homogeneity is significantly improved.
Two waveband LASER HEATING realizes in the following manner: hot room 17 top and bottom are provided with laser beam window I 27 and laser beam window II 30, installs high transmission CO
2the Zn-Cs single crystal glass of laser and the ultraviolet melting quartz glass of transmission 355nm laser.The laser beam that 10.6 μm of infrared lasers 11 and 355nm ultraviolet laser 19 send reflects through catoptron 16, through laser beam window I 27 and laser beam window II 30, at vertical direction, and upper and lower two bundle laser Heating Experiment sample simultaneously.Effectively can improve the temperature homogeneity of sample heating process from bottom-heated sample, reduce thermograde.
Particle phase transition process hyperthermia radiation feature measurement is by realizing with the following methods: ICCD and ultraviolet (infrared) spectrometer 9 are monitored sample state with controller 12 and changed, recording image data, pyrometer 10 real time record temperature data, quality of regulation flow control meter 7 and air heater 8, realize sample stable suspersion.During with infrared laser heating material, ICCD and ultraviolet (infrared) spectrometer (9) adopt ICCD and ultraviolet spectrometer (UVS) multiple measurement material sample ultraviolet radiation characteristic; And when measuring phase-change material infrared signature, then utilizing Ultra-Violet Laser heating material, ICCD and ultraviolet (infrared) spectrometer (9) adopt ICCD and infrared spectrometer to measure, and remove thermal source background radiation to the impact of band signal to be measured.Experiment coupling three spectrometers, can cover 0.2 μm to 25 μm whole ultraviolet to near-infrared band measurement range.Pulse delay generator 15 controls the time synchronized of laser instrument and measuring equipment.Window lens material can conveniently be replaced, and according to different demands, utilizes the combination between distinct device, can complete different experiments of measuring.And pre-set neutron scattering window 25 on the left of hot room 17, can related experiment have been carried out.
The beneficial effects of the utility model are: propose a kind of based on aerodynamic, for materials with high melting point phase transition process hyperthermia radiation feature measurement experimental system, utilize the air-flow sprayed in special construction jet pipe to blow afloat material sample, realize sample in fusing, phase transformation, solidify stable suspersion in whole experimentation.Utilize ultraviolet and infrared two high power lasers, coordinate corresponding light path, realize in the vertical direction two restraint laser upper and lower while heated particle material function, material can be made to be rapidly heated, melt material hard to tolerate, and effectively reduce the thermograde of material top and the bottom.Utilize ultraviolet, infrared double-waveband laser to after heating materials, effectively can carry out the Radiation of high temperature solid-state and liquid phase material in conjunction with different-waveband spectrometer.The utility model system does not need electrostatic suspension feedback system complicated like that to keep balance, not restriction in the selection of material, material-to-be-heated temperature can reach 3000K, and the cooling rate for material phase transformation process controls more for convenience, and cooling velocity can reach 700K/s.
The utility model system can provide dried and clean air and inert gas according to material nature and experiment demand, and applicability is extensive.Steady air current, can accurately control and regulate.Jet pipe side wall surface is provided with round through hole, changes the state rotated along vertical axle by suspension material, make its turning axle and vertical axle angled, in rotary course, laser can direct heating material downside surface, reduces the temperature difference of material different piece.Adopt high power infrared laser device, ultraviolet laser Heating Experiment sample, in heating process, utilize the thermal current of preheating to blow afloat sample, realize sample Quick uniform and heat up, reduce the thermograde of material top and the bottom; During cooling, utilize cold airflow to blow afloat sample, realize the quick cooling of sample.Adopt intersection wave band measuring method, during infrared laser heating material, utilize ultraviolet spectrometer (UVS) to measure, during Ultra-Violet Laser heating material, utilize infrared spectrometer to measure, effectively remove thermal source background radiation to the impact of band signal to be measured.Spectral characteristics of radiation measures covering 0.2 μm to 25 μm whole ultraviolet, visible, near-infrared band, can real-time synchronization collecting temperature and picture signal.Through appropriate reconstruction, can meet kinds of experiments demand, such as infrared signature experiments of measuring, X ray scatterometry is tested, neutron scattering experiments of measuring, material structure dynamic experiment etc.
The above is only to better embodiment of the present utility model, not any pro forma restriction is done to the utility model, every any simple modification above embodiment done according to technical spirit of the present utility model, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (6)
1. a materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system, it is characterized in that: comprise piston type air compressor (1), piston type air compressor (1) connects primary air filter (2) by pipeline, primary air filter (2) connects freezing type drier (3) by pipeline, freezing type drier (3) connects fine air filtrator (4) by pipeline, fine air filtrator (4), buffer tank (5), nitrogen cylinder (20) is connected four-way valve (23) with helium tank (21) respectively by pipeline, buffer tank (5) connects voltage stabilizer (6) by pipeline, voltage stabilizer (6) is by pipeline quality of connection flow control meter (7), mass rate controls meter (7) by wire connection controller (12), mass rate controls meter (7) and connects online air heater (8) by pipeline, online air heater (8) goes up the air inlet pipeline and cooling line connector (32) installed by pipeline connecting spray nozzle pedestal (31), air inlet pipeline and cooling line connector (32) are also connected Water-cooling circulating machine (18) by cool cycles pipeline (33), spout base (31) is provided with jet pipe (13), spout base (31) and jet pipe (13) are placed in hot room (17), hot room (17) top and bottom are respectively equipped with laser beam window I (27) and laser beam window II (30), the laser that infrared laser (11) sends is by catoptron (16) irradiating laser light beam window I (27), the laser that ultraviolet laser (19) sends is by catoptron (16) irradiating laser light beam window II (30), silica glass window I (26) and silica glass window II (28) are installed in laser beam window I (27) both sides, ICCD and ultraviolet infrared spectrometer (9) are by wire connection controller (12), ICCD and ultraviolet infrared spectrometer (9) are by alignment lens silica glass window I (26), silica glass window II (28) aimed at by pyrometer (10), pyrometer (10) is by wire connection controller (12), pulse delay generator (15) connects infrared laser (11) respectively by wire, ultraviolet laser (19) and controller (12), hot room (17) also connects vaccum-pumping equipment (14) by pipeline.
2. according to materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system a kind of described in claim 1, it is characterized in that: described spout base (31) and jet pipe (13) inner-wall spraying insulating moulding coating, this coating has comparatively low thermal conductivity, utilize the low heat conductivity of air in pottery and cenosphere to reduce base material to incoming flow heat absorption, ensure to possess higher temperature from the gas of jet pipe ejection.
3. according to materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system a kind of described in claim 1, it is characterized in that: the sidewall of described jet pipe (13) is provided with the small through hole of inclination, air-flow is by flow field non complete symmetry during nozzle throat, when laboratory sample suspends, there is certain inclination angle in its turning axle and vertical axes.
4. according to materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system a kind of described in claim 1, it is characterized in that: the laser that described infrared laser (11) sends is 10.6 μm, the laser that described ultraviolet laser (19) sends is 355nm.
5. according to materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system a kind of described in claim 1, it is characterized in that: described hot room (17) left side has pre-seted neutron scattering window (25).
6. according to materials with high melting point particle phase transition process high temperature spectrum Radiation biodosimetry system a kind of described in claim 1, it is characterized in that: the pipeline between described nitrogen cylinder (20) and described four-way valve (23) is provided with decompression venting valve (24), the nitrogen pressure that nitrogen cylinder (20) is carried is reduced pressure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667009.3U CN204758472U (en) | 2014-11-10 | 2014-11-10 | High -melting -point material granule phase transition process high temperature spectrum radiation characteristic measurement system |
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| CN201420667009.3U CN204758472U (en) | 2014-11-10 | 2014-11-10 | High -melting -point material granule phase transition process high temperature spectrum radiation characteristic measurement system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359837A (en) * | 2014-11-10 | 2015-02-18 | 哈尔滨工业大学 | Measuring system for high-temperature spectral radiation characteristics of phase change process of high-melting-point material particles |
| CN109946059A (en) * | 2019-04-17 | 2019-06-28 | 中国人民解放军第八一医院 | A kind of ultra-thin fluid jet nozzle performance test apparatus |
| CN110961039A (en) * | 2018-09-28 | 2020-04-07 | 铠柏科技有限公司 | Laser heating cavity system |
-
2014
- 2014-11-10 CN CN201420667009.3U patent/CN204758472U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104359837A (en) * | 2014-11-10 | 2015-02-18 | 哈尔滨工业大学 | Measuring system for high-temperature spectral radiation characteristics of phase change process of high-melting-point material particles |
| CN110961039A (en) * | 2018-09-28 | 2020-04-07 | 铠柏科技有限公司 | Laser heating cavity system |
| CN110961039B (en) * | 2018-09-28 | 2022-07-01 | 铠柏科技有限公司 | Laser heating cavity system |
| CN109946059A (en) * | 2019-04-17 | 2019-06-28 | 中国人民解放军第八一医院 | A kind of ultra-thin fluid jet nozzle performance test apparatus |
| CN109946059B (en) * | 2019-04-17 | 2023-11-17 | 中国人民解放军第八一医院 | Ultrathin jet nozzle performance test device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151111 Effective date of abandoning: 20170412 |
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| AV01 | Patent right actively abandoned |