CN108106746A - The temperature survey of continuous wind tunnel cooling system and data collecting system - Google Patents
The temperature survey of continuous wind tunnel cooling system and data collecting system Download PDFInfo
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- CN108106746A CN108106746A CN201711272351.8A CN201711272351A CN108106746A CN 108106746 A CN108106746 A CN 108106746A CN 201711272351 A CN201711272351 A CN 201711272351A CN 108106746 A CN108106746 A CN 108106746A
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- G—PHYSICS
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- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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Abstract
A kind of temperature survey of continuous wind tunnel cooling system and data collecting system, measure the numerical value of the multiple temperature control points of continuous wind tunnel cooling system respectively by armouring integral temperature transmitter, patch type temperature sensor plus temperature transmitter and thermocouple total temperature framed bent, and signal analysis and processing, wherein temperature control target of the total temperature framed bent electric thermo-couple temperature as cooling control system are carried out by data acquisition controller after being acquired respectively to temperature transmitter signal and thermocouple signal by analogue collection module, Thermocouple module.Cooling control system is simultaneously monitored the temperature signal of other temperature control points, so as to test data analyzer, and the signal for influencing wind-tunnel and equipment safety is included safety interlocking monitoring, by all temperature data uploadings to wind-tunnel core controller.The present invention has the characteristics of measuring accuracy is higher, response is fast, can ensure the uniformity of total temperature test and can be detected to key node.
Description
Technical field
The invention belongs to wind tunnel test technical fields, the specifically a kind of temperature survey of continuous wind tunnel cooling system and number
According to acquisition system.
Background technology
A kind of way of realization of continuous wind tunnel cooling system be by the refrigerants such as spray liquid nitrogen/liquefied ammonia into wind-tunnel,
Realize that the cooling of wind-tunnel is run using its gasification latent heat.By taking hydrojet nitrogen as an example, cooling system is by liquid nitrogen storage tank, pump, distributing valve
Group, crowded valve group, feed flow valve group, collection pendular ring and the associated pipe of pushing away form, and wherein liquid nitrogen container is used for the storage of liquid nitrogen；Liquid nitrogen pump and
Gasifier is for changing into gas nitrogen by liquid nitrogen and be stored in gas cylinders group, driving source of the gas and Air control valve as crowded propulsive liquid nitrogen
Drive source of the gas；The source of the gas of gas cylinders group is adjusted to by required high-low pressure by distribution platform and drives gas；On liquid nitrogen feeding pipe
Feed flow valve group, for controlling the cleaning of liquid nitrogen pipeline, precooling, filling and conveying；Collection pendular ring is used to install liquid nitrogen spray solenoid valve
And nozzle, while filled for liquid nitrogen.It prepares pipeline in liquid nitrogen conveying and gas nitrogen, collect pendular ring, liquid nitrogen spray section, hole body circuit
Many places configure corresponding temperature sensor/transmitter implementing monitoring, and total temperature framed bent is configured in wind-tunnel stable section, and with warm on framed bent
It spends measuring point value of feedback and implements cooling control as wind-tunnel total temperature control targe.Compared to common continuous wind tunnel, cooling system is configured
Continuous wind tunnel have different requirements to the precision and rapidity and uniformity of the point position of temperature, test.
The temperature survey of conventional continuous wind tunnel or wind-tunnel section and data collecting system also use temperature sensor/pick-up
Device realizes data collection and analysis to carry out temperature survey by data collecting system, and measuring accuracy is higher, but can not be complete
Full up foot cooling system demand, is mainly manifested in the following aspects：
First, cooling system is higher to the index request of temperature measuring equipment, it is rapidity and the temperature survey to temperature-responsive first
The accuracy requirement of amount is higher.The run time that cools down is shorter, and liquid nitrogen consumption is larger, while sprays liquid nitrogen cooling with larger
Risk, such as liquid nitrogen gasify will cause hole body local temperature is too low to cause equipment damage not in time, it is therefore necessary to ensure that temperature is surveyed
That puts is quick, accurate, to reduce liquid nitrogen consumption, and reduces the cold operation risk of wind-tunnel.
Second is that cooling system is more demanding to the uniformity index of stable section gas flow temperature field, stable section gas flow temperature conduct
If the control targe of cooling system according to conventional wind-tunnel temperature point layout method, can not accurately characterize the equal of gas flow temperature
Even property.Therefore, it is necessary to meet uniformly to install temperature point every shorter distance on flow area in stable section total temperature framed bent, and
It is required that the precision height of the temperature measuring equipment, fast response time, uniformity are good.
Third, cooling system is more demanding to the intensity and temperature-measuring range of temperature measurement equipment, inhaled using injection liquid nitrogen vaporization
During the cooling method of heat, the temperature of liquid nitrogen is relatively low, can reach -198 DEG C, and low-temperature lower portion divides material easily brittle, in addition wind-tunnel
It is also equipped with conventional and other operating mode service abilities such as is pressurized except cooling operation is outer, wind-tunnel inside points under High Mach number during conventional operation
The gas flow temperature of position is higher, and temperature measuring equipment needs to be fixed on for a long time on wind tunnel body after installation is complete, so as to be subjected to high temperature
To the repetitive process of low temperature, normal pressure to supercharging, therefore have higher requirements to the material, intensity and temperature-measuring range of temperature measuring equipment.
Fourth, cooling system has particular/special requirement to the position of temperature point.Conventional wind-tunnel temp measuring system is not to fluid-N2 spraying section
The temperature of hole wall, liquid nitrogen favorable current are supervised along journey primary focus, such as liquid nitrogen transfer pipeline, the temperature of wind-tunnel heat exchanger section
It surveys, and the accurate measurement of above-mentioned measuring point temperature is implemented to play an important roll to the smooth of cooling system.
Not yet find that the temperature survey of continuous wind tunnel cooling system and data are adopted in known open source literature and patent
The description of collecting system.
The content of the invention
To solve the deficiency that the prior art is unsuitable for continuous wind tunnel cooling system, the present invention proposes a kind of continous way wind
The temperature survey of hole cooling system and data collecting system.
The present invention passes through armouring integral temperature transmitter, the patch type temperature sensor being used in combination and temperature pick-up
Device, thermocouple total temperature framed bent measure the numerical value of the multiple temperature control points of continuous wind tunnel cooling system respectively, and by analog acquisition mould
After block, Thermocouple module are respectively acquired temperature transmitter signal and thermocouple signal, carried out by data acquisition controller
The temperature control target of signal analysis and processing, wherein total temperature framed bent electric thermo-couple temperature as cooling control system；Cooling control system is same
When the temperature signal of other temperature control points is monitored, so as to test data analyzer, and the letter of wind-tunnel and equipment safety will be influenced
Safety interlocking monitoring number is included, data acquisition controller also serves as cooling control system core controller, by all temperature datas
It is uploaded to wind-tunnel core controller and carries out storage and show.
The armouring integral temperature transmitter includes the first armouring integral temperature transmitter, the second armouring integral type
Temperature transmitter, the 3rd armouring integral temperature transmitter, the 4th armouring integral temperature transmitter, the 5th armouring integral type temperature
Spend transmitter and the 6th armouring integral temperature transmitter；Wherein, the first armouring integral temperature transmitter is mounted on gas
Change on device export pipeline, the second armouring integral temperature transmitter is mounted on the liquid nitrogen transfer pipeline of feed flow valve group rear end, is located at
Collect among pendular ring and feed flow valve group, the 3rd armouring integral temperature transmitter is mounted on liquid collecting endless tube road highest point, is particularly located at
Liquid collecting top of the ring above wind-tunnel axis, the 4th armouring integral temperature transmitter are mounted on collector ring pipeline highest point, specifically
The gas collection top of the ring above wind-tunnel axis, the 5th armouring integral temperature transmitter be located at fluid-N2 spraying section and heat exchanger it
Between, on wind tunnel body circuit and 7 meters of Range compress machine end, the 6th armouring integral temperature transmitter are mounted on wind-tunnel
On the body circuit of heat exchanger section hole.
The armouring integral temperature transmitter includes sensor and transmitter two parts, wherein:Sensor uses PT100
Platinum sensor, sensor to transmitter use three-wire system connection mode, -250 DEG C of temperature-measuring range~100 DEG C, A grades of precision；
Temperature-sensitive end protection pipe reducing is to 1.9mm；Transmitter is exported using 4~20mA of two-wire system electric currents；The Whole Response time：Gas medium
T0.5<8s, liquid medium T0.5<1s。
The armouring integral temperature transmitter is all pacified using by the way of institute's test tube road/hole body circuit axis
Dress, the insertion depth of the temperature-sensitive end protection pipe of each armouring integral temperature transmitter by survey pipeline diameter 1/2.
The patch type temperature sensor includes the first patch type temperature sensor and the second patch type temperature sensor,
In the first patch type temperature sensor be mounted at the solenoid valve block of collection pendular ring upstream, wind-tunnel outer wall below wind-tunnel axis at this
On；The second patch type temperature sensor is mounted at collection pendular ring downstream electrical magnet valve group, wind below wind-tunnel axis at this
On the outer wall of hole；The terminals of the first patch type temperature sensor and the terminals of the first temperature transmitter pass through quad
It is attached according to specified pin；The terminals of the second patch type temperature sensor and the wiring of second temperature transmitter
End is attached by quad according to specified pin；By temperature transmitter by each patch type temperature sensor
Signal is converted into current signal；
The temperature transmitter includes the first temperature transmitter and second temperature transmitter；First temperature transmitter
At the solenoid valve block of fluid-N2 spraying section collection pendular ring upstream, close to the first patch type temperature sensor, second temperature transmitter
At fluid-N2 spraying section collection pendular ring downstream electrical magnet valve group, close to the second patch type temperature sensor；Temperature transmitter is tried one's best
Close to corresponding patch type temperature sensor, distance is no more than 2 meters, and suitable position is fixedly mounted nearby.
The analogue collection module has 8 analog acquisition passages；The Thermocouple module totally 3, often only 4
Thermocouple acquisition channel；Each armouring integral temperature transmitter is connected successively with 1~6 passage of analogue collection module respectively
It connects；Each temperature transmitter is connected successively with 7~8 passages of analogue collection module respectively, and the signal of each transmitter is just
The signal anode of each passage of analogue collection module is terminated, the signal negative terminal of each transmitter connects the signal negative terminal of each passage；Total temperature
9 thermocouple temperature sensors are evenly arranged on framed bent, each thermocouple temperature sensor of total temperature framed bent is divided into 3 groups, and
It is respectively connected on each passage in 3 thermocouple acquisition modules；The signal of each thermocouple temperature sensor is just terminating thermocouple and is adopting
Collect the signal anode of each passage of module, the signal negative terminal of each thermocouple temperature sensor connects the signal negative terminal of each passage.
It rises to top disposed at equal distance bottom of each thermocouple temperature sensor on the total temperature framed bent；The heat
- 30 DEG C~60 DEG C of galvanic couple temperature sensor temperature-measuring range, 0.5 DEG C of precision, response time T0.9=0.5s.
Compared with prior art, the advantageous effect that obtains of the present invention is：
1st, measuring accuracy is higher, response is fast.Stable section total temperature framed bent uses in high precision, quick response thermocouple sensor,
Temperature signal is acquired by the acquisition module of high-resolution and high sampling rate, so as to ensure that the precision of test data and speed
Degree.0.5 DEG C of measuring accuracy, Whole Response time<1s.
2nd, the uniformity of total temperature test ensures.Multiple temperature points are arranged on total temperature framed bent, according to stable section high uniformity
Stable section air-flow center is distributed in, and uses identical thermocouple sensor and acquisition module, ensure that the equal of temperature field measurement
Even property.Under 18 DEG C of test conditions of room temperature, each measuring point temperature deviation is less than 0.3 DEG C.
3rd, key node is detected, improves the security of system.To liquid nitrogen gasification pipeline, liquid nitrogen transfer pipeline, liquid
Hole wall, favorable current heat exchanger etc. temperature are monitored at nitrogen injection, smoothly to implement to spray liquid nitrogen cooling and ensureing the peace of wind-tunnel
Row for the national games lays the foundation.
The present invention is verified that verification result proves there is good effect by NF-6 wind-tunnel cooling systems.
Description of the drawings
Fig. 1 is a kind of temperature survey of continuous wind tunnel cooling system and data collecting system parts layout drawing.
Fig. 2 is a kind of continous way cooling wind-tunnel major sections layout.
In figure：1. the first armouring integral temperature transmitter；2. the second armouring integral temperature transmitter；3. the 3rd armouring
Integral temperature transmitter；4. the 4th armouring integral temperature transmitter；5. the first patch type temperature sensor；6. the second patch
Formula temperature sensor；7. the first temperature transmitter；8. second temperature transmitter；9. the 5th armouring integral temperature transmitter；10.
6th armouring integral temperature transmitter；11. total temperature framed bent；12. data acquisition controller；13. analogue collection module；14.
Thermocouple module；15. signal cable；16. infusion pipeline；17. blow valve；18. heat exchanger；19. it is vented the interface of valve group；20.
Compensation lead of thermocouple；21. stable section；22. compressor；23. feed flow valve group；24. liquid nitrogen storage tank；25. liquid nitrogen pump；It is pushed away 26. squeezing
Valve group；27. distribution platform；28. gasifier；29. gas cylinders group；30. collect pendular ring；31. collector ring；32. fluid-N2 spraying section, 33. heat exchange
Device section, 34. compressor sections.
Specific embodiment
The present embodiment is with the temperature survey of Mr. Yu's continuous wind tunnel cooling system and data collecting system, the master of the system
The operation principle is wanted to be：As described in Fig. 1 temperature surveys and data collecting system parts layout drawing, become by armouring integral temperature
Device, the patch type temperature sensor being used in combination and temperature transmitter, thermocouple total temperature framed bent is sent to measure continuous wind tunnel respectively
The numerical value of the multiple temperature control points of cooling system, and temperature transmitter is believed respectively by analogue collection module 13, Thermocouple module 14
Number and thermocouple signal be acquired, signal analysis and processing is then carried out by data acquisition controller 12, wherein total temperature framed bent heat
Temperature control target of the galvanic couple temperature as cooling control system.Cooling control system simultaneously carries out the temperature signal of other temperature control points
The signal for influencing wind-tunnel and equipment safety so as to test data analyzer, and is included safety interlocking monitoring, data acquisition control by monitoring
Device 12 processed also serves as cooling control system core controller, and all temperature data uploadings to wind-tunnel core controller are stored
Display.
It is clear in order to state, so that the temperature survey of continuous wind tunnel cooling system and data acquisition system is understood more intuitively
System first carries out the function of the structural principle of continuous wind tunnel cooling system, temperature survey and each equipment of data collecting system
It briefly describes.In Fig. 1, the first armouring integral temperature transmitter 1 is used to measure gasifier exit pipeline gas flow temperature；Second armour
Dress integral temperature transmitter 2 is used to measure liquid nitrogen transfer pipeline fluid temperature；3rd armouring integral temperature transmitter 3 is used for
Measurement set pendular ring fluid temperature；4th armouring integral temperature transmitter 4 is used to measure collector ring gas temperature；First patch type
Temperature sensor 5 collects hole wall temperature at the solenoid valve block of pendular ring upstream for measuring fluid-N2 spraying section 32；Second patch type temperature passes
Sensor 6 is used to measure hole wall temperature at fluid-N2 spraying section collection pendular ring downstream electrical magnet valve group；First temperature transmitter 7 is by the first patch
The mode that the signal that formula temperature sensor 5 gathers becomes electric current is transmitted；Second temperature transmitter 8 is by the second patch type temperature
The mode that the signal that sensor 6 gathers becomes electric current is transmitted；5th armouring integral temperature transmitter 9 is used to measure liquid nitrogen
Tunnel airstream temperature between spray section and heat exchanger；6th armouring integral temperature transmitter 10 is used to measure air-flow at heat exchanger
Temperature；Total temperature framed bent 11 uses 9 thermocouple sensors being equally spaced perpendicular to wind-tunnel axis, for measuring 21 gas of stable section
It flows temperature and characterizes the uniformity of gas flow temperature；Data acquisition controller 12 be used for data analyzing and processing, and with wind-tunnel core
Controller carries out data interaction；Analogue collection module 13 gathers each temperature transmitter measuring point signal by signal cable 15；Heat
Galvanic couple module 14 gathers each electric thermo-couple temperature measuring point signal by compensation lead of thermocouple 20；Infusion pipeline 16 is by liquid nitrogen storage tank
Liquid nitrogen is sent to Ji Yehuanchu；Liquid nitrogen/gas nitrogen emptying of the blow valve 17 on liquid nitrogen transfer pipeline and collection pendular ring, collector ring；When
Heat exchanger 18 is for reducing tunnel airstream temperature when wind-tunnel room temperature is run；The interface 19 of exhaust valve group is used to adjust tunnel pressure；
Compressor 22 is the driving source of wind-tunnel；The feed flow valve group 23 being installed on the liquid nitrogen transfer pipeline of liquid nitrogen storage tank outlet is used for liquid nitrogen
Cleaning, precooling and the liquid nitrogen filling of transfer pipeline；Liquid nitrogen storage tank 24 is used to store liquid nitrogen；It squeezes and pushes away valve group 26 and be positioned over distribution platform
In, the driving gas needed for crowded liquid nitrogen is provided；The source of the gas of gas cylinders group 29 is adjusted to by required driving gas by distribution platform 27；Liquid
Nitrogen pump 25 and gasifier 28 for liquid nitrogen to be changed into gas nitrogen and is stored in gas cylinders group, as crowded propulsive liquid nitrogen driving source of the gas and
The driving source of the gas of Air control valve；Collection pendular ring 30 is filled, liquid collecting for installing liquid nitrogen spray solenoid valve and nozzle for liquid nitrogen
Ring solenoid group is divided into upstream solenoid valve block and downstream solenoid valve block, and collection pendular ring upstream solenoid valve block is located at 34 He of compressor section
Between heat exchanger section 33, specifically it is installed on close to compressor side, about 2 meters of Range compress machine end position, collects pendular ring downstream electrical magnetic
About 4 meters of valve group Range compress machine end position, collection pendular ring installation site are designed to obtain by aerodynamic conditions；Collector ring 31 is used to collect
Collect the nitrogen of pendular ring gasification.
In the present embodiment, the armouring integral temperature transmitter includes the first armouring integral temperature transmitter 1, the
Two armouring integral temperature transmitters 2, the 3rd armouring integral temperature transmitter 3, the 4th armouring integral temperature transmitter 4,
5th armouring integral temperature transmitter 9 and the 6th armouring integral temperature transmitter 10.Wherein, the first armouring integral type
Temperature transmitter is mounted on 28 export pipeline of gasifier；After second armouring integral temperature transmitter is mounted on feed flow valve group 23
It holds on liquid nitrogen transfer pipeline 16, among collection pendular ring and feed flow valve group；3rd armouring integral temperature transmitter is mounted on collection
The highest point of 30 pipeline of pendular ring is particularly located at liquid collecting top of the ring above wind-tunnel axis；4th armouring integral temperature transmitter
Mounted on the highest point of 31 pipeline of collector ring, gas collection top of the ring above wind-tunnel axis is particularly located at；5th armouring integral type temperature
Transmitter is spent between fluid-N2 spraying section 32 and heat exchanger 18, is installed on wind tunnel body circuit simultaneously Range compress machine end
7 meters；6th armouring integral temperature transmitter is mounted on 33 hole body circuit of wind-tunnel heat exchanger section.Above-mentioned armouring integral temperature
Transmitter is all installed using by the way of institute's test tube road or hole body circuit axis.Each armouring integral temperature transmitter
The insertion depth of temperature-sensitive end protection pipe by survey pipeline diameter 1/2.
The patch type temperature sensor includes the first patch type temperature sensor 5 and the second patch type temperature sensor 6,
Wherein the first patch type temperature sensor is mounted at collection 30 upstream solenoid valve block of pendular ring, wind-tunnel below wind-tunnel axis at this
On outer wall；The second patch type temperature sensor is mounted at collection pendular ring downstream electrical magnet valve group, at this under wind-tunnel axis
On square wind-tunnel outer wall.The terminals of the terminals of the first patch type temperature sensor and the first temperature transmitter 7 pass through four
Core cable is attached according to specified pin；The terminals of the second patch type temperature sensor and second temperature transmitter
8 terminals are attached by quad according to specified pin；By transmitter by each patch type temperature sensing
The signal of device is converted into current signal, in order to transmit at a distance, and improves antijamming capability.The patch type temperature sensor
It need to be processed according to the outer wall arc shape of wind-tunnel, be close to wind-tunnel outer wall during installation, after wind-tunnel outer wall is polished and weld
Installation, and hole wall at measuring point and patch type sensor are subjected to isothermal holding.
The temperature transmitter includes the first temperature transmitter 7 and second temperature transmitter 8.The first temperature pick-up
Device is mounted at the solenoid valve block of fluid-N2 spraying section collection pendular ring upstream, close to the first patch type temperature sensor；Second temperature pick-up
Device is mounted at fluid-N2 spraying section collection pendular ring downstream electrical magnet valve group, close to the second patch type temperature sensor.Temperature transmitter leans on
Nearly corresponding patch type temperature sensor, distance are no more than 2 meters.
It is steady that data acquisition controller 12, analogue collection module 13 and the Thermocouple module 14 is installed on wind-tunnel hall
Determine in the cooling system switch board at section 21.Data acquisition controller 12, analogue collection module 13 and the thermocouple mould
Block 14 is the standardization industry control module of times good fortune, is realized be electrically connected by core bus between each other, and passes through module end
The mechanical snap at end, is securely joined together, and is fixed in switch board on installation guide rail.
The analogue collection module totally 1, often only 8 analog acquisition passages.The Thermocouple module totally 3
Only, every only 4 thermocouple acquisition channels.Twisted signal cable 15 is shielded by each armouring integral temperature transmitter using two cores
Be connected respectively with 1~6 passage of analogue collection module 13, by each temperature transmitter respectively with analogue collection module 13 7
~8 passages connect；During connection, the signal anode of each armouring integral temperature transmitter respectively with the analogue collection module
The signal anode connection of each passage, the signal negative terminal of each armouring integral temperature transmitter respectively with the analog acquisition mould
The signal negative terminal connection of each passage of block.
Using 9 two core compensating wires 20 matched with thermocouple sensor respectively by 1~9 thermocouple of total temperature framed bent
Temperature sensor is connected respectively with 9 passages in 3 Thermocouple modules.During connection, each thermocouple temperature sensor
Signal anode of the signal anode respectively with each passage in 3 Thermocouple modules is connected, each thermocouple temperature sensor
Signal negative terminal of the signal negative terminal respectively with each passage in 3 Thermocouple modules is connected.
According to Fig. 1 configuration armouring integral temperatures transmitter, patch type temperature sensor, temperature transmitter, data acquisition
Controller, analogue collection module and thermocouple acquisition module.The feature of wherein each parts is：
Armouring integral temperature transmitter：Including sensor and transmitter two parts, sensor is passed using PT100 platinum resistance
Sensor, sensor to transmitter use three-wire system connection mode, -250 DEG C of temperature-measuring range~100 DEG C, A grades of precision；Temperature-sensitive end is protected
Pillar reducing is to 1.9mm.Transmitter is exported using 4~20mA of two-wire system electric currents.The Whole Response time：Gas medium T0.5<8s、
Liquid medium T0.5<1s.Above-mentioned armouring integral temperature transmitter performance parameter is identical, except that installation site and sensing
The slotting deep length of device protection pipe, and insert deep length and about survey the 1/2 of pipeline diameter.
Patch type temperature sensor：Four-wire system exports, and -50 DEG C of temperature-measuring range~70 DEG C, A grades of precision seamless can be installed on
The external wall in fluid-N2 spraying section hole.
Temperature transmitter：4~20mA of two-wire system electric currents export, A grades of precision.
Total temperature framed bent sensor 11：9 thermocouple temperature sensors are evenly arranged on the total temperature framed bent, from stable section bottom
It rises to top at interval of one T-shaped thermocouple of disposed at equal distance, -30 DEG C of thermocouple temperature sensor temperature-measuring range~60 DEG C,
0.5 DEG C of precision, response time T0.9=0.5s, using dedicated compensation lead of thermocouple.
Data acquisition controller 12：Using BECKOFF times of good fortune embedded controller, clock frequency 1.6GHz, WinCE operation
System band real-time system environment.
Analogue collection module 13：8 passages, resolution ratio 12, conversion time representative value 1.25ms.
Thermocouple acquisition module 14：4 passages, band open circuit identification, respond most fast 20ms, give tacit consent to 250ms, resolution ratio is per numerical digit
0.01℃.Data acquisition controller 12, analogue collection module 13, thermocouple acquisition module 14 are connected by E-BUS core bus
It connects.
Analogue collection module 13 is connected to by 1~4,7~10 with signal cable, with compensation lead of thermocouple by thermocouple
Temperature sensor is respectively connected to thermocouple acquisition module 14, and carries out hardware configuration respectively, then to controller and acquisition mould
Block carries out software configuration, determines resolution ratio and sample rate etc..
Temperature survey is concretely comprised the following steps with what data collecting system worked：Data acquisition controller powers on, and then opens drop
Warm system control program reads the initial reading of each sensor, judges whether sensor works normally, and data acquisition controller is real-time
It gathers each sensor values and carries out software filtering processing, while the temperature signal to being related to system safety is monitored, so as to
It implements security interlocking protection, and all temperature data uploadings to wind-tunnel core controller are carried out storage and are shown.
Claims (8)
1. temperature survey and the data collecting system of a kind of continuous wind tunnel cooling system, which is characterized in that pass through armouring one
Formula temperature transmitter, the patch type temperature sensor being used in combination and temperature transmitter, thermocouple total temperature the framed bent company of measurement respectively
The numerical value of the multiple temperature control points of continuous formula wind-tunnel cooling system, and by analogue collection module, Thermocouple module respectively to temperature pick-up
After device signal and thermocouple signal are acquired, signal analysis and processing, wherein total temperature framed bent heat are carried out by data acquisition controller
Temperature control target of the galvanic couple temperature as cooling control system；Cooling control system simultaneously carries out the temperature signal of other temperature control points
The signal for influencing wind-tunnel and equipment safety so as to test data analyzer, and is included safety interlocking monitoring, data acquisition control by monitoring
Device processed also serves as cooling control system core controller, and it is aobvious that all temperature data uploadings to wind-tunnel core controller are carried out storage
Show.
2. temperature survey and the data collecting system of continuous wind tunnel cooling system as described in claim 1, which is characterized in that institute
The armouring integral temperature transmitter stated includes the first armouring integral temperature transmitter, the second armouring integral temperature pick-up
Device, the 3rd armouring integral temperature transmitter, the 4th armouring integral temperature transmitter, the 5th armouring integral temperature transmitter
With the 6th armouring integral temperature transmitter；Wherein, the first armouring integral temperature transmitter is mounted on gasifier exit
On pipeline, the second armouring integral temperature transmitter be mounted on feed flow valve group rear end liquid nitrogen transfer pipeline on, positioned at collection pendular ring and
Among feed flow valve group, the 3rd armouring integral temperature transmitter is mounted on liquid collecting endless tube road highest point, is particularly located at wind-tunnel axis
Top liquid collecting top of the ring, the 4th armouring integral temperature transmitter are mounted on collector ring pipeline highest point, are particularly located at wind-tunnel
Gas collection top of the ring above axis, the 5th armouring integral temperature transmitter is between fluid-N2 spraying section and heat exchanger, installation
On wind tunnel body circuit and 7 meters of Range compress machine end, the 6th armouring integral temperature transmitter are mounted on wind-tunnel heat exchanger
On section hole body circuit.
3. temperature survey and the data collecting system of continuous wind tunnel cooling system as claimed in claim 2, which is characterized in that institute
Stating armouring integral temperature transmitter includes sensor and transmitter two parts, wherein:Sensor is sensed using PT100 platinum resistance
Device, sensor to transmitter use three-wire system connection mode, -250 DEG C of temperature-measuring range~100 DEG C, A grades of precision；It protects at temperature-sensitive end
Pipe reducing is to 1.9mm；Transmitter is exported using 4~20mA of two-wire system electric currents；The Whole Response time：Gas medium T0.5<8s, liquid
Body medium T0.5<1s。
4. temperature survey and the data collecting system of continuous wind tunnel cooling system as claimed in claim 2, which is characterized in that institute
It states armouring integral temperature transmitter all to install using by the way of institute's test tube road/hole body circuit axis, each armouring one
The insertion depth of the temperature-sensitive end protection pipe of body formula temperature transmitter by survey pipeline diameter 1/2.
5. temperature survey and the data collecting system of continuous wind tunnel cooling system as described in claim 1, which is characterized in that institute
Stating patch type temperature sensor includes the first patch type temperature sensor and the second patch type temperature sensor, wherein the first patch
Formula temperature sensor is mounted at the solenoid valve block of collection pendular ring upstream, at this below wind-tunnel axis on wind-tunnel outer wall；Described
Two patch type temperature sensors are mounted at collection pendular ring downstream electrical magnet valve group, at this below wind-tunnel axis on wind-tunnel outer wall；
The terminals of the first patch type temperature sensor and the terminals of the first temperature transmitter are by quad according to specifying
Pin be attached；The terminals of the second patch type temperature sensor pass through four with the terminals of second temperature transmitter
Core cable is attached according to specified pin；The signal of each patch type temperature sensor is converted by temperature transmitter
Into current signal.
6. temperature survey and the data collecting system of continuous wind tunnel cooling system as described in claim 1, which is characterized in that institute
Stating temperature transmitter includes the first temperature transmitter and second temperature transmitter；First temperature transmitter is mounted on liquid nitrogen
At the solenoid valve block of spray section collection pendular ring upstream, close to the first patch type temperature sensor, second temperature transmitter is mounted on liquid nitrogen
At spray section collection pendular ring downstream electrical magnet valve group, close to the second patch type temperature sensor；Temperature transmitter is close proximity to corresponding
Patch type temperature sensor, distance are no more than 2 meters, and suitable position is fixedly mounted nearby.
7. temperature survey and the data collecting system of continuous wind tunnel cooling system as described in claim 1, which is characterized in that institute
The analogue collection module stated has 8 analog acquisition passages；The Thermocouple module totally 3, often only 4 thermocouple acquisitions
Passage；Each armouring integral temperature transmitter is connected successively with 1~6 passage of analogue collection module respectively；It respectively will be each
Temperature transmitter is connected successively with 7~8 passages of analogue collection module, and the signal of each transmitter is just terminating analog quantity and adopting
Collect the signal anode of each passage of module, the signal negative terminal of each transmitter connects the signal negative terminal of each passage；Uniform cloth on total temperature framed bent
9 thermocouple temperature sensors are put, each thermocouple temperature sensor of total temperature framed bent is divided into 3 groups, and is respectively connected to 3 heat
On each passage in galvanic couple acquisition module；The signal of each thermocouple temperature sensor is just terminating each passage of thermocouple acquisition module
Signal anode, the signal negative terminal of each thermocouple temperature sensor connect the signal negative terminal of each passage.
8. temperature survey and the data collecting system of continuous wind tunnel cooling system as claimed in claim 7, which is characterized in that each
It rises to top disposed at equal distance bottom of the thermocouple temperature sensor on the total temperature framed bent；The electric thermo-couple temperature passes
- 30 DEG C of sensor temperature-measuring range~60 DEG C, 0.5 DEG C of precision, response time T0.9=0.5s.
Priority Applications (1)
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| CN114489174A (en) * | 2021-12-28 | 2022-05-13 | 中国航天空气动力技术研究院 | Automobile environment wind tunnel temperature control system based on chain type automatic control strategy |
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