CN105372290B - It is a kind of can fast cooling aircraft ground thermal modeling test device - Google Patents
It is a kind of can fast cooling aircraft ground thermal modeling test device Download PDFInfo
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- CN105372290B CN105372290B CN201510820839.4A CN201510820839A CN105372290B CN 105372290 B CN105372290 B CN 105372290B CN 201510820839 A CN201510820839 A CN 201510820839A CN 105372290 B CN105372290 B CN 105372290B
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- 238000001816 cooling Methods 0.000 title claims abstract description 173
- 238000012360 testing method Methods 0.000 title claims abstract description 88
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 164
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 121
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 83
- 239000007788 liquid Substances 0.000 claims abstract description 77
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000005855 radiation Effects 0.000 claims description 44
- 239000002609 medium Substances 0.000 claims description 34
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 25
- 239000000498 cooling water Substances 0.000 claims description 20
- 230000001105 regulatory effect Effects 0.000 claims description 18
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- 238000009792 diffusion process Methods 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 12
- 230000001960 triggered effect Effects 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 8
- 239000013535 sea water Substances 0.000 claims description 8
- 239000002826 coolant Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
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- 238000010438 heat treatment Methods 0.000 abstract description 20
- 238000004088 simulation Methods 0.000 abstract description 15
- 238000010998 test method Methods 0.000 abstract description 6
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- 239000000463 material Substances 0.000 description 8
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- 229910001220 stainless steel Inorganic materials 0.000 description 2
- NFGXHKASABOEEW-UHFFFAOYSA-N 1-methylethyl 11-methoxy-3,7,11-trimethyl-2,4-dodecadienoate Chemical compound COC(C)(C)CCCC(C)CC=CC(C)=CC(=O)OC(C)C NFGXHKASABOEEW-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses it is a kind of can fast cooling aircraft ground thermal modeling test device, the device includes compressed air system (A), water/liquid nitrogen supply system (B), the first testpieces heating pull-down test platform (C), the second testpieces heating pull-down test platform (D) and acquisition and control system (E).Effective heating and the cooling system for incorporating aircraft of the invention, conversion of the testpieces position between fire end and colling end is realized by line slide rail on heating pull-down test platform, after testpieces reaches predetermined temperature, moved along track and triggering travel switch discharges cooling working medium, the quick startup of cooling is realized, can effectively be connected heating and cooling simulation test procedure；It disclosure satisfy that the active demand developed new high-speed aircraft, ensure its flight safety, perfect ground level heat simulation experiment method.
Description
Technical field
The invention belongs to high-speed aircraft thermal simulation technical field, be related to it is a kind of can fast cooling aircraft ground hot-die
Intend experimental rig.
Background technology
The lifting of high-speed aircraft (especially hypersonic vehicle) flying speed is degrading the heat that aircraft is faced
Violent Aerodynamic Heating can be produced in environment, its flight course, body surface temperature can be increased in the presence of Aerodynamic Heating
More than 1000 DEG C, and because the factors such as aircraft down influence in flight course, high temperature surface may undergo a fast prompt drop
The process of temperature.The fast cooling on high temperature surface can cause excessive thermal stress, seal failure, malformation and destruction, to aircraft
Safety and normal flight cause to have a strong impact on.For some parts and material, it is necessary in the mistake of its fast cooling of ground simulation
The specific situation of change of journey, observation material and part simultaneously detects its reliability by thermal modeling test.
In order to reduce experimentation cost, it is to avoid flight test and wind tunnel test, the thermal modeling test device on ground becomes crowd
The necessary means that many high-speed aircrafts are detected, the heat flow density required for by applying on testpieces surface, can be on ground
The heated and temperature variations of face accurate reproduction associated materials and part in flight course.
However, thermal modeling test device is generally Aerodynamic Heating process simulation both at home and abroad at present, such as with infrared radiation heater
Or graphite heater is as thermal source, Aerodynamic Heating hot-fluid, the specifics of detection material and part under pneumatic heat effect are simulated
Can, it is impossible to meet the test requirements document of temperature-fall period simulation, also rare similar cooling analogue means report in document.Cooling simulation
How to realize, how to be connected with heating process simulation, these problems can influence the exploitation and survey of new high-speed aircraft
Examination.
Therefore, the fast cooling ground level heat simulation test device of high-speed aircraft thermal modeling test requirement can be met by building,
It is the new high-speed aircraft of exploitation, ensures the active demand of its flight safety, is also the weight for improving ground level heat simulation experiment method
Want means.
The content of the invention
Present invention solves the problem in that provide it is a kind of can fast cooling aircraft ground thermal modeling test device, meet
Different sizes, the fast cooling demand of different materials testpieces, and different rate of temperature fall can be provided.
The present invention is to be achieved through the following technical solutions：
It is a kind of can fast cooling aircraft ground thermal modeling test device, the device include compressed air system, water/liquid
Nitrogen supply system, the first testpieces heating-pull-down test platform, the second testpieces heating-pull-down test platform and data acquisition
With control system；
Described compressed air system is tried to the first testpieces heating-pull-down test platform, the second testpieces heating-cooling
Test platform and provide compressed air as temperature-reducing medium, provided at it and acquisition and control system is set on pipeline of temperature-reducing medium
Controllable valve；
Described water/liquid nitrogen supply system provides water/liquid nitrogen to the second testpieces heating-pull-down test platform and is used as cooling
Medium, provides at it and the controllable valve of acquisition and control system is set on pipeline of temperature-reducing medium；
Set respectively on described the first testpieces heating-pull-down test platform, the second testpieces heating-pull-down test platform
There is the track of infrared radiation heater, the cooling device for receiving temperature-reducing medium and heating-cooling position conversion, track is provided with examination
Test part pedestal；Testpieces, which is placed on testpieces pedestal, to be moved with it and can be changed in fire end and colling end, in cooling hot junction
Outside is additionally provided with the travel switch for starting temperature-reducing medium release, travel switch is triggered when pedestal is moved to colling end, stroke is opened
Close and open, temperature-reducing medium is entered in cooling device.
Described compressed air system includes piston type air compressor, and its air outlet slit is connected with oil water separator, leads to
Cross filter with air accumulator to be connected, the outlet of air accumulator is connected with the first diffuser, the compressed air warp after preliminary diffusion
Make in flowmeter and air cooling opening and closing magnetic valve air inlet branch road, air passage and the first testpieces heating-pull-down test system
Connected for the array jetting cooling module of cooling device, compressed air in array jetting cooling module by further diffusion and
Array jetting is produced after rectification.
Described oil water separator with the first air accumulator and the second air accumulator by being connected respectively after three-level accurate filter
Connect, the first stop valve is additionally provided with the pipeline between accurate filter and air accumulator；Oil water separator is also by provided with second section
Only the pipeline of valve is connected with air accumulator；Control the first stop valve, the opening and closing of the second stop valve can be under plugged filter operating mode
Compressed air is directly sent into air accumulator；
The 3rd stop valve, the 4th stop valve are further respectively had on the upstream of the first described air accumulator, downstream pipe, can be real
The switching of existing single/two air accumulators.
The triggerable travel switch of described air cooling opening and closing magnetic valve connection, by the compression in air accumulator after it is triggered
Air is discharged into array jetting cooling module；Described air passage includes the controlled subregion cooling metal hose of 4 passages and use
In single channel cooling metal hose, electric control valve is further respectively had on the controlled subregion cooling flexible pipe of 4 passages, the electric control valve
Controlled by data acquistion and control system, air mass flow is adjusted, and then control temperature-fall period；Described flowmeter will
The flow signal of collection is sent to acquisition and control system.
Described array jetting cooling module includes array jetting cooling module top, in the middle part of array jetting cooling module and
Array jetting cooling module bottom；
Described array jetting cooling module top is diffuser, including oral area and flaring passage are provided with flow in oral area
It is additionally provided with distributor, flaring passage between monolithic porous, monolithic porous and is folded with porous packing)；Described oral area number with
Single channel air passage or 4 channel air branch roads match；
It is rectification section in the middle part of described array jetting cooling module, honeybee is provided with the passage in the middle part of array jetting cooling module
Nest structure；
Described array jetting cooling module bottom is the nozzle array of dissolution medium, and nozzle is arranged in array in nozzle
Plate.
After compressed air enters array jetting cooling module, compressed air is by flow distributor on module cross section
It is uniformly distributed and the diffusion in flaring passage, the noise that its flow process is produced is by the metal porous filling that is clipped between monolithic porous
Thing absorbs；Rectification is carried out in the middle part of array jetting cooling module to air, air flows steady and flowing when flowing through honeycomb
Direction is consistent；The nozzle array of array jetting cooling module bottom is replaceable；
Described water/liquid nitrogen system is including from supercharging liquid nitrogen container and supercharging water tank, the described liquid nitrogen container of supercharging certainly is through low
Warm flowmeter and stream selection stop valve enters water/liquid nitrogen/air delivery pipe；
The aerating mouthful that the upper end of supercharging water tank is connected provided with filler and with from supercharging liquid nitrogen container, lower end is provided with water outlet
Mouthful, delivery port is connected through filter, flowmeter branch road, stream selection stop valve with water/liquid nitrogen/air delivery pipe；
The compressed air of compressed air system selects stop valve to enter water/liquid nitrogen/sky by air compressor by stream
Letter shoot road；
Water/liquid nitrogen/air delivery pipe is provided with travel switch, and be opened and closed magnetic valve through water/liquid nitrogen/air cools down with being used as
The nozzle of device is connected.
The described liquid nitrogen from supercharging liquid nitrogen container enters water/liquid nitrogen/air through cryogenic flow meter and stream selection stop valve
Transfer pipeline；
The water in water tank is pressurized under the pressure effect of nitrogen cylinder, is sent after entering different flowmeter branch roads through filter
Enter water/liquid nitrogen/air delivery pipe, regulating valve, the cooling of regulation water jet and water are additionally provided with supercharging water tank export pipeline
Water-carrying capacity during mist cooling；
The stream selection stop valve on different pipelines is opened, a kind of working medium in water/liquid nitrogen/air is entered water/liquid
Nitrogen/air delivery pipe；Water/liquid nitrogen/air opening and closing magnetic valve is triggered when testpieces is reached below nozzle, water/liquid nitrogen/sky
Gas is cooled as cooling medium by quick start of nozzle release；Described nozzle is straight tube-like nozzle or atomizer, is produced
Jet or spraying.
Described testpieces pedestal is water-cooled base, and water-cooled base installs water-cooled base in orbit infrared by sliding block
Moved between pharoid and cooling device；
Described infrared radiation heater includes the housing and reflecting surface that heater is spliced to form by water-cooling channel, and water cooling is led to
Road two ends set cooling water outlet and inlet respectively, and infra-red radiation fluorescent tube fixes sheet metal by fluorescent tube and is arranged on infrared radiation heating
Device, and be connected with the bus-bar of power supply；Infrared radiation heater also with the SCR Intelligent power regulating eqiupment of controller power or from
Coupling formula pressure regulator is connected；
Water tank passes through pipeline and the cooling water outlet and inlet of infrared radiation heater provided with cooling sea water regulating valve, experiment respectively
The cooling water outlet and inlet of part pedestal is connected, and adjusts into water-carrying capacity therein；Add in cooling sea water regulating valve in infra-red radiation
Cooled water distributor is additionally provided between the cooling water outlet and inlet of hot device, cooled water distributor is by water in infrared radiation heater
Evenly distributed between water-cooling channel；It is also equipped with float and switch monitor in water tank, switch monitor is by float
Switching signal sends into acquisition and control system, is alarmed respectively in low level and a high position.
Described data acquistion and control system (E) includes data collecting instrument, switch board, PLC, control module and calculating
Machine, wherein control module are constituted using PLC and touch-screen, and wherein PLC can gather the temperature sensor on testpieces surface in real time
Temperature data and control the aperture of the electric control valve on temperature-reducing medium pipeline, and then control the flow of temperature-reducing medium to adjust
Rate of temperature fall；
Touch-screen is as control parameter inputting interface and can in real time show, preserve the temperature data from PLC, in real time display
Test specimen surface temperature situation of change in controlled subregion temperature-fall period；
Temperature, pressure and data on flows in data collecting instrument collection process of the test, and data can be shown and be deposited
Storage；
Switch board is provided with variable connector and display lamp, can be powered for each instrument, PLC and touch-screen, while piston type
Air compressor start and stop, cooling water water level are shown, the cooling water outlet temperature of testpieces pedestal and infrared radiation heater is shown
All it is integrated in the switch board.
Compared with prior art, the present invention has following beneficial technique effect：
1) effective heating and the cooling system for incorporating aircraft of the present invention, passes through on heating-pull-down test platform
Line slide rail realizes conversion of the testpieces position between fire end and colling end, after testpieces reaches predetermined temperature, along rail
Road is moved and triggering travel switch discharges cooling working medium, realizes the quick startup of cooling, can effectively be connected heating and cooling mould
Intend process of the test；It disclosure satisfy that the active demand developed new high-speed aircraft, ensure its flight safety, perfect ground hot-die
Intend test method；
2) present invention uses internal water cooling passage in heating process for large-size infrared radiation heater, can prevent
Its temperature distortion, it is ensured that the long-term use under hot conditions；
3) present invention employs the mode of segmentation diffusion when providing compressed air as cooling working medium, supplies process of the test
Required air, and employ the uniform air-spray of array jetting cooling module generation；
4) the cooling medium supply system in the present invention can realize the supply and switching of compressed air, water and liquid nitrogen, and
It disclosure satisfy that different sizes, the pull-down test demand of different materials testpieces；
5) hardware of control system of the invention employs PLC and touch-screen, it is possible to achieve large scale testpieces is cooled
The PID control of process, temperature data also can be shown and be stored in real time.
Brief description of the drawings
Fig. 1 is fast cooling ground level heat simulation test device structural representation of the present invention；
Fig. 2 is the structural representation of array jetting cooling module of the present invention；
Fig. 3 is the structural representation of infrared radiation heater of the present invention；
Fig. 4 is control parameter input and the monitoring interface of the touch-screen of data acquistion and control system of the present invention；
Fig. 5 is data summarization and the export interface of the touch-screen of data acquistion and control system of the present invention；
Fig. 6 is type testing curve (400mm × 400mm × 8mm large-scale titanium alloy testpieces array air of the present invention
Jet pull-down test, pressure of storage tank 0.8MPa, nozzle quantity 16 × 16, nozzle height 5cm, 9 measuring points are equal on testpieces surface
Even distribution)；
In figure：A- compressed air systems, B- water and liquid nitrogen system, the first testpieces of C- heating-pull-down test platform, D-
Two testpieces heating-pull-down test platform, E- acquisition and control systems, 1- piston type air compressors, 2- water-oil separatings
Device, 3-P grades of air cleaners, 4-Q grades of air cleaners, 5-S grades of air cleaners, the air accumulators of 6- first (can be closed), 7-
Two air accumulators (normally opened), the diffusers of 8- first, 9- is from being pressurized liquid nitrogen container, 10- nitrogen cylinders, 11- supercharging water tanks, 12- filters,
The controlled cooling air passage of 13-4 passage subregions, 14- single channel cooling air passages, 15- array jetting cooling modules,
16- water tanks, 17- the first testpieces pedestals, 18- cooled water distributors, 19- stainless steel flexible hoses, the infrared radiation heatings of 20- first
Device, the tracks of 21- first, the sliding blocks of 22- first, 23- water/liquid nitrogen/air delivery pipe, 24- nozzles, the sliding blocks of 25- second, 26-
Two tracks, the infrared radiation heaters of 27- second, 28- the second testpieces pedestals, 29,30- supply stop valves, 31- first ends
Valve, the stop valves of 32- second, the stop valves of 33- the 3rd, the stop valves of 34- the 4th, 35- air coolings opening and closing magnetic valve, 36,37,38,39- electricity
Dynamic regulating valve, 40,41,42,43,44- streams selection stop valve, 45- liquid nitrogen conveying stop valve, 46- nitrogen cylinder pressure-reducing valves, 47-
Filler stop valve, 48- filler, 49- air pressure balance stop valves, 50- flow control valves, 51- cryogenic flows meter 52,53,54,
55- flowmeters, 56- water/liquid nitrogen/air opening and closing magnetic valve, 57,58- cooling sea water regulating valves, 59- SCR Intelligent power regulating eqiupments,
60- auto-transformers, 61- draining valves, 62,63- travel switches, 64- array jetting cooling modules top, 65- array jettings drop
In the middle part of warm module, 66- array jetting cooling modules bottom, 67- flow distributors, 68- monolithic porous, the metal porous fillings of 69-
Thing, 70- honeycombs, 71- nozzle plates, 72- nozzles, 73- bus-bars, 74- hangers, 75- water-cooling channels, 76- fluorescent tubes fix gold
Category piece, 77- infra-red radiation fluorescent tubes, 78- passage switching push buttons, 79- export data buttons, 80- data windows, 81- data windows,
82- chart areas, 83- parameter adjustment windows, 84- shift knobs, 85- data forms.
Embodiment
The present invention is can to carry out fast cooling process mould there is provided one kind to adapt to the new demand of ground thermal modeling test
The experimental rig of plan, simulates with heating to be connected cooling simulation, meets different sizes, the fast cooling of different materials testpieces
Demand, and different rate of temperature fall can be provided, realize the controlled subregion cooling of large scale testpieces.With reference to specific reality
Applying example, the present invention is described in further detail, and the explanation of the invention is not limited.
Referring to Fig. 1, it is a kind of can fast cooling aircraft ground thermal modeling test device, the device includes compressed air system
System A, water/liquid nitrogen supply system B, the first testpieces heating-pull-down test platform C, the second testpieces heating-pull-down test platform
D and acquisition and control system E；
Described compressed air system A is to the first testpieces heating-pull-down test platform C, the second testpieces heating-cooling
Test platform D provides compressed air as temperature-reducing medium, provides and is set on the pipeline of temperature-reducing medium by data acquisition and control at it
Valve controllable system E processed；
Described water/liquid nitrogen supply system B provides water/liquid nitrogen to the second testpieces heating-pull-down test platform D and is used as drop
Warm medium, provides at it and is set on pipeline of temperature-reducing medium by valve controllable acquisition and control system E；
On described the first testpieces heating-pull-down test platform C, the second testpieces heating-pull-down test platform D respectively
Set on track provided with infrared radiation heater 27, the cooling device of receiving temperature-reducing medium and heating-cooling position conversion, track
There is testpieces pedestal 17；Testpieces, which is placed on testpieces pedestal, to be moved with it and can be changed in fire end and colling end, in cooling
The travel switch for starting temperature-reducing medium release is additionally provided with the outside of hot junction, travel switch is triggered when track is moved to colling end,
Travel switch is opened, and temperature-reducing medium is entered in cooling device.
Wherein, wherein compressed air system A, water and liquid nitrogen system B provide cooling working medium, the first testpieces for cooling simulation
Heating-temperature-fall period of testpieces, data are realized in heating-pull-down test platform C, the second testpieces heating-pull-down test platform D
Collection gathers process of the test data with control system E and controlled subregion cooling simulated test can be controlled.
The open ended maximum testpieces sizes of first testpieces heating-pull-down test platform C are 600mm × 600mm, maximum
Heating power is 54kW.The open ended maximum testpieces sizes of second testpieces heating-pull-down test platform D be 200mm ×
200mm, maximum heating power is 22kW.
Described compressed air system A includes piston type air compressor 1, and its air outlet slit is connected with oil water separator 2,
It is connected by filter with air accumulator, the outlet of air accumulator is connected with the first diffuser 8, the compressed air after preliminary diffusion
Through flowmeter 55 and the air cooling opening and closing air inlet branch road of magnetic valve 35, air passage and the first testpieces heating-pull-down test system
Connected in system C as the array jetting cooling module 15 of cooling device, compressed air is passed through in array jetting cooling module 15
Array jetting is produced after further diffusion and rectification.
Described oil water separator 2 by after three-level accurate filter respectively with the first air accumulator 6 and the phase of the second air accumulator 7
The first stop valve 31 is additionally provided with connection, the pipeline between accurate filter and air accumulator；Oil water separator 2 is also by provided with
The pipeline of two stop valves 32 is connected with air accumulator；Control the first stop valve 31, the opening and closing of the second stop valve 32 can be in filter
Block and compressed air is directly sent into air accumulator under operating mode；
The 3rd stop valve 33, the 4th stop valve are further respectively had on the upstream of the first described air accumulator 6, downstream pipe
34, the switching of single/two air accumulators can be achieved.
Described air cooling opening and closing magnetic valve 35 is controlled by travel switch 62, after it is triggered that the compression in air accumulator is empty
Gas is discharged into array jetting cooling module 15；Described air passage includes the controlled subregion cooling metal hose of 4 passages and use
In single channel cooling metal hose, electric control valve is further respectively had on the controlled subregion cooling flexible pipe of 4 passages, the electric control valve
Controlled by data acquistion and control system E, air mass flow is adjusted, and then control temperature-fall period；Described flowmeter
The flow signal of collection is sent to acquisition and control system E by 55.
Specifically, piston type air compressor 1 produces compressed air from indoor environment air-breathing, compressed air is through water-oil separating
Device 2 carries out coarse filtration, three-level accurate filter (3-P grades of air cleaners, 4-Q grades of air cleaners, 5-S grades of air cleaners)
Compressed air is further filtered, filter passage stop valve (stop valves of 31- first, the stop valves of 32- second) can be more
Change filter core or block accurate filter short circuit under operating mode；Compressed air after filtering sends into air accumulator (6- first through pipeline
Air accumulator (can close), the air accumulators of 7- second (normally opened)), the first air accumulator 6 can break by air accumulator stop valve (33,34)
Open, meet the few operating condition of test requirement of gas consumption；The outlet connection air diffuser 8 of air accumulator, compressed air is in flaring passage
In can preliminary diffusion；Air cooling opening and closing magnetic valve 35 closes connection air flow circuit, flowmeter 55 under the control of travel switch 62
The real-time traffic of air can be measured；Flange is connected with single channel cooling with air passage 14 (metal hose), constitutes single channel
Cool air flue, installs closure plate during the controlled cooling of 4 passage subregions on flange, electric control valve (36,37,38,39) is respectively
4 passage subregions, 4 air flues of the controlled formation of cooling air passage 13 are connected, can be made in acquisition and control system E
Different air mass flows are provided for different cooling areas with lower.
Referring to Fig. 2, described array jetting cooling module 15 includes array jetting cooling module top 64, array jetting and dropped
Warm module middle part 65 and array jetting cooling module bottom 66；
Described array jetting cooling module top 64 is diffuser, including oral area and flaring passage, in oral area provided with stream
Measure to be additionally provided between monolithic porous 68, monolithic porous 68 in distributor 67, flaring passage and be folded with porous packing 69；Described mouth
Portion's number matches with single channel air passage or 4 channel air branch roads；
65 be to be set in the middle part of rectification section, array jetting cooling module in 65 passage in the middle part of described array jetting cooling module
There is honeycomb 70；
Described array jetting cooling module bottom 66 is the nozzle array of dissolution medium, and nozzle 72 is arranged in array in spray
Mouth plate 71.
Compressed air enters after array jetting cooling module 15, and compressed air is by flow distributor 67 in module cross section
On be uniformly distributed and the diffusion in flaring passage, the noise that its flow process is produced is metal porous between monolithic porous 68 by being clipped in
Filler 69 absorbs；65 pairs of air carry out rectification in the middle part of array jetting cooling module, and air flows when flowing through honeycomb 70
It is steady and flow direction is consistent；The nozzle array of array jetting cooling module bottom 66 is replaceable；
Specifically, array jetting cooling module top 64 supplies compressed air diffusion, compressed air passes through flow distributor 67
It is uniformly distributed on module cross section and the diffusion in flaring passage, the noise that its flow process is produced is by being clipped in monolithic porous 68
Between metal porous filler 69 absorb；Rectification is carried out to air in the middle part of array jetting cooling module, air is flowing through honeycomb knot
Flowing more steady and flow direction uniformity can be improved during structure 70；66- array jetting cooling modules bottom is nozzle array,
Nozzle 72 by nozzle plate 71 Drilling operation form；Module material is by bolt company between 304 stainless steels, three parts
Connect；Array jetting cooling module bottom 66 can be according to different tests operating mode to nozzle array requirement change；4 passages battle array
The structure of row fluidics module is identical with single channel module, and difference is that 4 entrances and flaring passage are arranged at the top of 4 channel modules,
Middle part and bottom are divided into 4 uniform square ducts, and top and middle part weld together, and rubber blanket is set between middle part and bottom
4 passages are sealed.
Described water/liquid nitrogen system B includes supercharging liquid nitrogen container 9 certainly and supercharging water tank 11, and described is pressurized liquid nitrogen container 9 certainly
Enter water/liquid nitrogen/air delivery pipe through cryogenic flow meter 51 and stream selection stop valve；
The aerating mouthful that the upper end of supercharging water tank 11 is connected provided with filler and with from supercharging liquid nitrogen container 9, lower end is provided with
Delivery port, delivery port is connected through filter 12, flowmeter branch road, stream selection stop valve with water/liquid nitrogen/air delivery pipe
It is logical；
Compressed air system A compressed air selects stop valve to enter water/liquid nitrogen/sky by air compressor by stream
Letter shoot road；
Water/liquid nitrogen/air delivery pipe is switched provided with formation, and magnetic valve is opened and closed and as cooling through water/liquid nitrogen/air
The nozzle of device is connected.
The described liquid nitrogen from supercharging liquid nitrogen container 9 enters water/liquid nitrogen/sky through cryogenic flow meter 51 and stream selection stop valve
Letter shoot road,
The water in water tank 11 is pressurized under the pressure effect of nitrogen cylinder 10, enters different flowmeter branch through filter 12
Water/liquid nitrogen/air delivery pipe is sent into behind road, regulating valve 50 is additionally provided with the supercharging export pipeline of water tank 11, adjusts water-jet
Water-carrying capacity when stream cooling and water spray cool；
The stream selection stop valve on different pipelines is opened, a kind of working medium in water/liquid nitrogen/air is entered water/liquid
Nitrogen/air delivery pipe；Water/liquid nitrogen/air opening and closing magnetic valve is triggered when testpieces is reached below nozzle 24, and water/liquid nitrogen/
Air discharges quick start by nozzle 24 as cooling medium and cooled；Described nozzle 24 is straight tube-like nozzle or atomization spray
Mouth, produces jet or spraying.
Specifically, from supercharging liquid nitrogen container 9 liquid nitrogen can be driven to enter stream, supercharging water tank 11 relies on the pressure of nitrogen cylinder 10
Power driving water enters stream, in addition, the compressed air from compressed air system A also enters the system, is shared with water and liquid nitrogen
Magnetic valve and follow-up stream, the switching of different working medium select the opening and closing of stop valve 40,41,42,43,44 to realize by stream：Such as liquid
Opened respectively according to water-carrying capacity when stream selection stop valve 41, water jet drop or spraying temperature experiment are opened during nitrogen jet pull-down test
Stream selects stop valve 42,43,44；The stream of water prevents the normal of impurity effect valve opening and closing and flowmeter equipped with filter 12
Operation, flow control valve 50 can carry out fine adjustment to water-carrying capacity, due to water spray cooling and the different operating modes of water jet cooling
Down-off is changed greatly, and sets the flowmeter 52,53,54 of different ranges；Water/liquid nitrogen/air opening and closing magnetic valve is connected to manually
Switch, can open temperature-fall period by quick manual when testpieces is moved to below nozzle.
Nozzle 24 is atomizer when water spray cools, and is straight pipe type when empty gas and water and liquid nitrogen injection cool
Nozzle；Water-cooling channel is not set inside testpieces pedestal and infrared radiation heater, is only filled with refractory material, infrared radiation heater
Power pass through auto-transformer 60 manually regulation heating voltage realize.
Described testpieces pedestal 17 is water-cooled base, and water-cooled base installs water-cooled base in orbit red by sliding block
Moved between external radiation heater 20 and cooling device；
Referring to Fig. 3, described infrared radiation heater 20 include by water-cooling channel 75 be spliced to form the housing of heater with
Reflecting surface, the two ends of water-cooling channel 75 set cooling water outlet and inlet respectively, and infra-red radiation fluorescent tube 77 fixes sheet metal 76 by fluorescent tube
It is connected installed in infrared radiation heater 20, and with the bus-bar 73 of power supply；Infrared radiation heater 20 also with controller work(
The SCR Intelligent power regulating eqiupment 59 or autocoupling type pressure regulator of rate are connected；
Water tank 16 respectively by the cooling water outlet and inlet of the pipeline provided with cooling sea water regulating valve and infrared radiation heater 20,
The cooling water outlet and inlet of water-cooled base is connected, and adjusts into water-carrying capacity therein；In cooling sea water regulating valve in infra-red radiation
Cooled water distributor 18 is additionally provided between the cooling water outlet and inlet of heater 20, cooled water distributor 18 is by water in infra-red radiation
Evenly distributed between the water-cooling channel 75 of heater 20；Float and switch monitor are also equipped with water tank 16, float is opened
Close monitor and switch signal is sent into acquisition and control system E, alarmed respectively in low level and a high position.
Specifically, bus-bar is copper, can be lamp tube power supply, whole heater is fixed on aluminum hanger, rectangle
Water-cooling channel 75 is spliced to form the housing and reflecting surface of heater, and passage two ends set cooling water outlet and inlet, infra-red radiation respectively
Fluorescent tube 77 is fixed sheet metal 76 by fluorescent tube and installed on the heaters.SCR Intelligent power regulating eqiupment 59 controls infrared radiation heater
20 power, testpieces is placed on testpieces pedestal 17, after being heated to given temperature through infrared radiation heater 20 in orbit
It is moved to below array jetting cooling module, while travel switch closure connects magnetic valve, starts temperature-fall period；Chilled water modulation
Enter the water-carrying capacity of testpieces pedestal 17 and infrared radiation heater, cooled water distributor 18 in the regulation process of the test of valve 57,58
Water is evenly distributed between 8 passages of infrared radiation heater 20, drawn with reducing because each water-cooling channel water is different
Play temperature different, prevent heater texturing；Water level in water tank 16 is monitored by its internal switch installed, switch letter
Number feeding acquisition and control system E, realizes low level and the alarm of high-order bright light.
Referring to Fig. 4,5, described data acquistion and control system E includes data collecting instrument, switch board, control module and meter
Calculation machine, wherein control module are constituted using PLC and touch-screen, and PLC can gather the temperature sensor on testpieces surface in real time
Temperature data and the aperture for controlling the electric control valve on temperature-reducing medium pipeline, and then control the flow of temperature-reducing medium to adjust drop
Warm speed；
Touch-screen is as control parameter inputting interface and can in real time show, preserve the temperature data from PLC, in real time display
Test specimen surface temperature situation of change in controlled subregion temperature-fall period；
Temperature, pressure and data on flows in data collecting instrument collection process of the test, and can be to data display and storage；
Switch board is provided with variable connector and display lamp, can be powered for each instrument, PLC and touch-screen, while piston type
Air compressor start and stop, cooling water water level are shown, the cooling water outlet temperature of testpieces pedestal and infrared radiation heater is shown
All it is integrated in the switch board.
Specifically, temperature, pressure and data on flows in data collecting instrument collection process of the test, and can be by showing boundary
Face is shown and data storage；Switch board is provided with variable connector and display lamp, can be supplied for each instrument, PLC and touch-screen
Electricity, in addition, the start and stop of piston type air compressor 1, cooling water water level are shown, testpieces pedestal 17 and infrared radiation heater 20
Cooling water outlet temperature, which is shown, to be all integrated in the switch board；PLC controls drop in real time as controller according to given control law
The aperture of electric control valve 36,37,38,39 during temperature, it is possible to achieve same testpieces surface different zones are according to different
Temperature lowering curve completes experiment；PLC control program can be uploaded and changed, and its control parameter can be adjusted in touch-screen,
In addition, touch-screen can also be monitored and show to real time temperature curve, storage and the derivative of data, the touch-screen of establishment are realized
Interface is as shown in Figure 4 and Figure 5.Passage switching push button 78 can realize the switching at different control passage interfaces, export data button
79 can switch to data summarization as shown in Figure 5 and export interface, and data window 80 shows real time temperature data, data window
The given temperature data of 81 displays, given temperature and real time temperature curve can in real time show in chart area 82, control parameter from
Parameter adjustment window 83 is inputted, and shift knob 84 can be with the start and stop of control PLC, Fig. 5 data summarizations and export interface display control
During all times and temperature data, it is possible to realize data export.
It is above-mentioned can fast cooling specific test procedure of the aircraft ground thermal modeling test device when being tested such as
Under：
1) large scale testpieces single channel array jetting cooling simulated test step：Testpieces is placed, in testpieces table
Face welds (metalwork) or pastes (to nonmetal parts) thermocouple, log-on data collection and control system (E), is on living
Plug air compressor 1 is inflated to air accumulator, beats each valve in opening/closing or regulation compressed air system A；First is opened to test
Cooling sea water regulating valve 57,58 in part heating-pull-down test platform C, treadmill test part is placed on testpieces pedestal and is moved to
Below infrared radiation heater, regulation SCR Intelligent power regulating eqiupment 59 opens heating process；Testpieces is heated to after predetermined temperature
Below nigration part pedestal to array jetting cooling module, travel switch 62 is triggered, air cooling opening and closing magnetic valve starts drop
Warm simulation test procedure.
2) the controlled subregion cooling simulated test step of large scale testpieces multichannel：According to experiment duration, each channel targets
Temperature lowering curve sets relevant parameter in acquisition and control system E, and closure plate is installed on control flange, changes multichannel battle array
Row fluidics module, remaining test procedure is with single channel array jetting cooling simulated test.
3) small size testpieces water spray, liquid nitrogen injection, single injector air-spray cool simulated test：According to selected
Working medium is respectively to be pressurized from supercharging liquid nitrogen container 9, to be pressurized the moisturizing of water tank 11 pressurization or starting piston type air compressor 1, is beaten
Correspondence stream valve is opened, the aperture of flow control valve 50 is adjusted；Log-on data is gathered and control system E, and testpieces is placed in into examination
Test on part pedestal, be moved to after being heated to predetermined temperature through infrared radiation heater below nozzle, triggering travel switch 63, water/
Liquid nitrogen/air solenoid valve starts the simulation test procedure that cools.
Be illustrated in figure 6 the present invention type testing curve (400mm × 400mm × 8mm large-scale titanium alloy testpieces,
Pressure of storage tank 0.8MPa, nozzle quantity 16 × 16, nozzle height 5cm, 9 measuring points are uniformly distributed on testpieces surface), wherein horizontal
Coordinate is the time, and ordinate is temperature, and left figure is temperature ramps, and figure is right for fast cooling section；It can be seen that in temperature-rise period
Disclosure satisfy that the demand for heat of testpieces, in cooling can fast cooling meet the cooling demand of testpieces.
Example given above is to realize the present invention preferably example, and the invention is not restricted to above-described embodiment.This area
Technical staff any nonessential addition, the replacement made according to the technical characteristic of technical solution of the present invention, belong to this
The protection domain of invention.
Claims (9)
1. it is a kind of can fast cooling aircraft ground thermal modeling test device, it is characterised in that the device include compressed air
System (A), water/liquid nitrogen supply system (B), the first testpieces heating-pull-down test platform (C), the second testpieces heating-cooling
Test platform (D) and acquisition and control system (E)；
Described compressed air system (A) is to the first testpieces heating-pull-down test platform (C), the second testpieces heating-cooling
Test platform (D) provides compressed air as temperature-reducing medium, is provided at it and data acquisition and control are set on pipeline of temperature-reducing medium
The controllable valve of system (E) processed；
Described water/liquid nitrogen supply system (B) provides water/liquid nitrogen to the second testpieces heating-pull-down test platform (D) and is used as drop
Warm medium, provides at it and the controllable valve of acquisition and control system (E) is set on pipeline of temperature-reducing medium；
On described the first testpieces heating-pull-down test platform (C), the second testpieces heating-pull-down test platform (D) respectively
Provided with infrared radiation heater (27), receive on the cooling device of temperature-reducing medium and the track of heating-cooling position conversion, track
Provided with testpieces pedestal；Testpieces, which is placed on testpieces pedestal, to be moved with it and can be changed in fire end and colling end, in cooling
The travel switch for starting temperature-reducing medium release is additionally provided with the outside of hot junction, travel switch is triggered when pedestal is moved to colling end,
Travel switch is opened, and temperature-reducing medium is entered in cooling device；
Described compressed air system (A) includes piston type air compressor (1), and its air outlet slit connects with oil water separator (2)
Connect, be connected by filter with air accumulator, the outlet of air accumulator is connected with the first diffuser (8), the pressure after preliminary diffusion
Contracting air is opened and closed magnetic valve (35) air inlet branch road through flowmeter (55) and air cooling, and air passage and the first testpieces heat-
Connected in pull-down test system (C) as the array jetting cooling module (15) of cooling device, compressed air drops in array jetting
In warm module (15) array jetting is produced after further diffusion and rectification.
2. as claimed in claim 1 can fast cooling aircraft ground thermal modeling test device, it is characterised in that it is described
Oil water separator (2) with the first air accumulator (6) and the second air accumulator (7) by being connected respectively after three-level accurate filter, essence
The first stop valve (31) is additionally provided with pipeline between close filter and air accumulator；Oil water separator (2) is also by provided with second
The pipeline of stop valve (32) is connected with air accumulator；Control the first stop valve (31), the opening and closing of the second stop valve (32) can be in mistake
Filter blocks and compressed air directly is sent into air accumulator under operating mode；
The 3rd stop valve (33), the 4th stop valve are further respectively had on the upstream of described the first air accumulator (6), downstream pipe
(34) switching of single/two air accumulators, can be achieved.
3. as claimed in claim 1 can fast cooling aircraft ground thermal modeling test device, it is characterised in that it is described
Air cooling opening and closing magnetic valve (35) is triggerable travel switch, and the compressed air in air accumulator is discharged into battle array after it is triggered
In row jet cooling module (15)；Described air passage includes the controlled subregion cooling metal hose of 4 passages and for single channel
Cool metal hose, further respectively has electric control valve on the controlled subregion cooling flexible pipe of 4 passages, the electric control valve is adopted by data
The control of collection and control system (E), air mass flow is adjusted, and then controls temperature-fall period；Described flowmeter (55) will
The flow signal of collection is sent to acquisition and control system (E).
4. as described in claim 1 or 3 can fast cooling aircraft ground thermal modeling test device, it is characterised in that institute
The array jetting cooling module (15) stated includes array jetting cooling module top (64), array jetting cooling module middle part (65)
With array jetting cooling module bottom (66)；
Described array jetting cooling module top (64) is diffuser, including oral area and flaring passage are provided with flow in oral area
It is additionally provided with distributor (67), flaring passage between monolithic porous (68), monolithic porous (68) and is folded with porous packing (69)；Institute
The oral area number stated matches with single channel air passage or 4 channel air branch roads；
(65) are to be set in the middle part of rectification section, array jetting cooling module in the passage of (65) in the middle part of described array jetting cooling module
There is honeycomb (70)；
Described array jetting cooling module bottom (66) is the nozzle array of dissolution medium, and nozzle (72) is arranged in array in spray
Mouth plate (71).
5. as claimed in claim 4 can fast cooling aircraft ground thermal modeling test device, it is characterised in that compression is empty
Gas enters after array jetting cooling module (15), and compressed air is uniformly distributed by flow distributor (67) on module cross section
And in flaring passage diffusion, the noise that its flow process is produced is by the metal porous filler that is clipped between monolithic porous (68)
(69) absorb；(65) carry out rectification to air in the middle part of array jetting cooling module；The spray of array jetting cooling module bottom (66)
Mouth array is replaceable.
6. as claimed in claim 1 can fast cooling aircraft ground thermal modeling test device, it is characterised in that it is described
Water/liquid nitrogen system (B) is included from supercharging liquid nitrogen container (9) and supercharging water tank (11), and described supercharging liquid nitrogen container (9) certainly is through low temperature
Flowmeter (51) and stream selection stop valve enter water/liquid nitrogen/air delivery pipe；
The aerating mouthful that the upper end of supercharging water tank (11) is connected provided with filler and with from supercharging liquid nitrogen container (9), lower end is provided with
Delivery port, delivery port is connected through filter (12), flowmeter branch road, stream selection stop valve with water/liquid nitrogen/air delivery pipe
It is logical；
The compressed air of compressed air system (A) selects stop valve to enter water/liquid nitrogen/air by air compressor by stream
Transfer pipeline；
Water/liquid nitrogen/air delivery pipe is provided with travel switch, is opened and closed magnetic valve through water/liquid nitrogen/air and is used as cooling device
Nozzle be connected.
7. as claimed in claim 6 can fast cooling aircraft ground thermal modeling test device, it is characterised in that it is described
Stop valve is selected into water/liquid nitrogen/air delivery pipe through cryogenic flow meter (51) and stream from the liquid nitrogen of supercharging liquid nitrogen container (9)
Road,
The water in water tank (11) is pressurized under the pressure effect of nitrogen cylinder (10), enters different flowmeters through filter (12)
Water/liquid nitrogen/air delivery pipe is sent into after branch road, regulating valve (50) is additionally provided with supercharging water tank (11) export pipeline, adjusts
Water-carrying capacity when jet cooling of economizing on water cools with water spray；
The stream selection stop valve on different pipelines is opened, a kind of working medium in water/liquid nitrogen/air is entered water/liquid nitrogen/sky
Letter shoot road；Water/liquid nitrogen/air opening and closing magnetic valve is triggered when testpieces is reached below nozzle (24), water/liquid nitrogen/sky
Gas is cooled as cooling medium by quick start of nozzle (24) release；Described nozzle (24) is straight tube-like nozzle or atomization spray
Mouth, produces jet or spraying.
8. as claimed in claim 1 can fast cooling aircraft ground thermal modeling test device, it is characterised in that it is described
Testpieces pedestal (17) is water-cooled base, and water-cooled base installs water-cooled base in orbit in infrared radiation heater by sliding block
(20) moved between cooling device；
Described infrared radiation heater (20) includes the housing and reflecting surface that heater is spliced to form by water-cooling channel (75), water
Cold passage (75) two ends set cooling water outlet and inlet respectively, and infra-red radiation fluorescent tube (77) is fixed sheet metal (76) by fluorescent tube and installed
It is connected in infrared radiation heater (20), and with the bus-bar (73) of power supply；Infrared radiation heater (20) is gone back and controller
The SCR Intelligent power regulating eqiupment (59) of power is connected；
Water tank (16) respectively by the cooling water outlet and inlet of the pipeline provided with cooling sea water regulating valve and infrared radiation heater (20),
The cooling water outlet and inlet of testpieces pedestal is connected, and adjusts into water-carrying capacity therein；In cooling sea water regulating valve and infrared spoke
Cooled water distributor (18) is additionally provided between the cooling water outlet and inlet for penetrating heater (20), cooled water distributor (18) exists water
Evenly distributed between the water-cooling channel (75) of infrared radiation heater (20)；Float and switch are also equipped with water tank (16)
Switch signal is sent into acquisition and control system (E) by monitor, switch monitor, in low level and high-order time-division
Do not alarm.
9. as claimed in claim 1 can fast cooling aircraft ground thermal modeling test device, it is characterised in that it is described
Data acquistion and control system (E) includes data collecting instrument, switch board, control module and computer, and wherein control module is used
PLC and touch-screen are constituted, and wherein PLC can gather the temperature data of the temperature sensor on testpieces surface in real time and control cooling
The aperture of electric control valve on medium pipeline, and then control the flow of temperature-reducing medium to adjust rate of temperature fall；
Touch-screen is as control parameter inputting interface and can in real time show, preserve the temperature data from PLC, shows controlled in real time
Test specimen surface temperature situation of change in subregion temperature-fall period；
Temperature, pressure and data on flows in data collecting instrument collection process of the test, and data can be shown and be stored；
Switch board is provided with variable connector and display lamp, can be powered for each instrument, PLC and touch-screen, while piston type pneumatic
Compressor (1) start and stop, cooling water water-level alarm, the coolant outlet temperature of testpieces pedestal (17) and infrared radiation heater (20)
Degree display is all integrated in the switch board.
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| CN106769133A (en) * | 2016-12-02 | 2017-05-31 | 哈尔滨工业大学 | A kind of the atomized water spray pilot system and its application method of test flight device hot junction portion structure part thermal shock resistance |
| CN107639461B (en) * | 2017-09-25 | 2023-10-27 | 东莞安默琳机械制造技术有限公司 | Automatic liquid nitrogen composite spray cooling system |
| CN107855825B (en) * | 2017-09-25 | 2020-08-11 | 东莞安默琳机械制造技术有限公司 | Automatic liquid nitrogen composite spray cooling method |
| CN110160894B (en) * | 2018-04-16 | 2021-08-10 | 北京机电工程研究所 | Impact load test system |
| CN110136772A (en) * | 2019-04-08 | 2019-08-16 | 北京强度环境研究所 | A kind of low pressure heat test large scale structure inside active cooling device |
| CN111829680A (en) * | 2019-04-23 | 2020-10-27 | 北京振兴计量测试研究所 | Surface pyrometry method |
| CN110849648A (en) * | 2019-10-25 | 2020-02-28 | 西安航天动力试验技术研究所 | Movable thermal environment device for ground heat insulation prevention test of aerospace craft |
| CN112817345A (en) * | 2020-12-28 | 2021-05-18 | 中国航空工业集团公司沈阳飞机设计研究所 | Skin temperature control method and system |
| CN113933235B (en) * | 2021-12-16 | 2022-02-25 | 中国飞机强度研究所 | Method for measuring temperature of aircraft skin in solar radiation simulation test |
| CN114509232B (en) * | 2022-01-20 | 2023-08-22 | 中国空气动力研究与发展中心高速空气动力研究所 | Hole wall device for modularized wind tunnel test |
| CN114815931B (en) * | 2022-06-23 | 2022-09-13 | 中国飞机强度研究所 | Method for controlling thermal test temperature of airplane component in extremely high temperature environment |
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Granted publication date: 20170912 |