CN106706260A - System for precisely controlling total temperature of continuous transonic wind tunnel - Google Patents
System for precisely controlling total temperature of continuous transonic wind tunnel Download PDFInfo
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- CN106706260A CN106706260A CN201611037181.0A CN201611037181A CN106706260A CN 106706260 A CN106706260 A CN 106706260A CN 201611037181 A CN201611037181 A CN 201611037181A CN 106706260 A CN106706260 A CN 106706260A
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- water
- wind
- tunnel
- heat exchanger
- water pump
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
- G01M9/065—Measuring arrangements specially adapted for aerodynamic testing dealing with flow
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a system for precisely controlling total temperature of a continuous transonic wind tunnel. The system comprises a wind tunnel heat exchanger and a first water pump, wherein a water inlet of the wind tunnel heat exchanger is connected with a water outlet of the first water pump. The system is characterized by further comprising two adjusting valves, a one-way valve, a second water pump and a PID controller, wherein a water inlet of the second water pump is connected with a cooling water source, a water outlet of the second water pump is connected with a water inlet of the one-way valve, one end of the first adjusting valve and a water inlet of the first water pump, the other end of the first adjusting valve is connected with a water outlet of the wind tunnel heat exchanger, one end of the second adjusting valve is connected with the water outlet of the wind tunnel heat exchanger and the other end of the first adjusting valve, the other end of the second adjusting valve is connected with a water outlet of the one-way valve and the cooling water source, and the water outlet of the one-way valve is connected with the cooling water source. The system has the advantages of wide adjustment range and high control precision.
Description
Technical field：
The present invention relates to a kind of system of precise control continous way transonic wind tunnel stagnation temperature.
Background technology：
Continous way transonic wind tunnel needs cooling to maintain test air-flow stagnation temperature stabilization, and extraneous cooling water is flowed through installed in wind
There is heat exchange with tunnel airstream in the heat exchanger of hole heat exchanging segment.Diabatic process can be formulated as For
Heat exchange amount, h is overall heat-transfer coefficient, and A is heat exchanger heat exchange area, and Δ T is the temperature difference between cooling water and air-flow.It is that wind-tunnel is total
Temperature stabilization (total heat exchange amount on different temperature valuesNecessarily), change cooling water flow conventionally by variable frequency pump to realize,
But it is simple to change cooling current because the thermal resistance in wind-tunnel heat exchanger heat transfer process between cooling water and air-flow is main in air-flow side
Amount changes smaller to overall heat-transfer coefficient h, changes also limited to heat transfer temperature difference Δ T, is as a result exactly the regulation of wind tunnel test total airflow temperature
Narrow range, control accuracy is poor.
The content of the invention：
In order to overcome above mentioned problem, reaching wind-tunnel stagnation temperature can be accurately controlled in design temperature in regulated in wider range
On purpose, The present invention gives a kind of system of precise control continous way transonic wind tunnel stagnation temperature.
The technical scheme is that：A kind of system of precise control continous way transonic wind tunnel stagnation temperature, including wind-tunnel is changed
Hot device and the first water pump, the water inlet of wind-tunnel heat exchanger are connected with the delivery port of the first water pump, are characterized in：Also include two tune
Section valve, check valve, the second water pump and a PID controller, the water inlet of the second water pump are connected with cooling water source, the second water pump
Delivery port water inlet successively respectively with check valve, one end of the first regulating valve, the water inlet of the first water pump are connected, the first regulation
The other end of valve is connected with the delivery port of wind-tunnel heat exchanger, one end of the second regulating valve respectively with the water outlet of wind-tunnel heat exchanger
Mouthful, the connection of the other end of the first regulating valve, the other end of the second regulating valve delivery port, cooling water source respectively with check valve
Connection, the delivery port of check valve is connected with cooling water source；Be pumped into for extraneous cooling water to come by the second water pump, and then the first water pump is taken away
A part returns to cooling water source, wind-tunnel heat exchanger hot water part warp out to wind-tunnel heat exchanger, remaining part through check valve
Second regulating valve returns to the external world, and a part returns to wind-tunnel heat exchanger through the first regulating valve and the first water pump；It is total according to wind-tunnel target
Temperature uses PID controller two capacities of returns of regulating valve of precise control, also controls two inflows of water pump respectively simultaneously, because returning
Flow is different, and the water by the first regulating valve is different from the mixed temperature of water come by the second water pump, is changed into wind-tunnel
The water temperature of hot device is different, so as to control heat transfer temperature difference, i.e. precise control wind-tunnel stagnation temperature.
Compared with prior art, it is not to adjust wind-tunnel stagnation temperature by adjusting cooling water flow that progress of the invention is, and
It is the constant cooling water flow under certain wind tunnel test operating point, regulation cooling water temperature regulation wind-tunnel stagnation temperature；With adjustable range
Width, control accuracy advantage higher.
Brief description of the drawings：
Fig. 1 is original cooling water system layout；
Fig. 2 is cooling water system layout of the invention.
Specific embodiment：
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described：
Embodiment 1
As shown in Fig. 2 a kind of system of precise control continous way transonic wind tunnel stagnation temperature, including wind-tunnel heat exchanger 1 and
One variable frequency pump 2, the water inlet of wind-tunnel heat exchanger 1 is connected with the delivery port of the first variable frequency pump 2, is characterized in also including two
3.4, check valve 5 of regulating valve, the second variable frequency pump 6 and PID controller, the water inlet and cooling water of the second variable frequency pump 6
Source connects, the delivery port of the second variable frequency pump 6 water inlet, one end, first of the first regulating valve 3 successively respectively with check valve 5
The water inlet connection of water pump 2, the other end of the first regulating valve 3 is connected with the delivery port of wind-tunnel heat exchanger 1, the second regulating valve 4
One end delivery port respectively with wind-tunnel heat exchanger 1, the other end of the first regulating valve 3 be connected, other the one of the second regulating valve 4
End delivery port respectively with check valve 5, cooling water source are connected, and the delivery port of check valve 5 is connected with cooling water source；
Be pumped into for extraneous cooling water to come by the second variable frequency pump 6, and then the first variable frequency pump 1 takes a part away and gives wind-tunnel heat exchange
Device 1, remaining part returns to cooling water source through check valve 5, and the hot water part out of wind-tunnel heat exchanger 1 is returned through the second regulating valve 4
Cooling water source is returned, a part returns to wind-tunnel heat exchanger through the first regulating valve 3 and the first variable frequency pump 2；
Two capacities of returns of regulating valve 3.4 of PID controller precise control are used according to wind-tunnel target stagnation temperature, also respectively simultaneously
Two inflows of variable frequency pump 2.6 of control, because capacity of returns is different, by the water of the first regulating valve 3 and by the second frequency conversion water
The mixed temperature of water that pump 6 comes is different, and the water temperature into wind-tunnel heat exchanger 1 is different, so that control heat transfer temperature difference, i.e., it is and smart
Really control wind-tunnel stagnation temperature.
Claims (1)
1. a kind of system of precise control continous way transonic wind tunnel stagnation temperature, including wind-tunnel heat exchanger and the first water pump, wind-tunnel are changed
The water inlet of hot device is connected with the delivery port of the first water pump, it is characterised in that：Also include two regulating valves, check valve, the
Two water pumps and PID controller, the water inlet of the second water pump are connected with cooling water source, the delivery port of the second water pump successively respectively with list
Connected to the water inlet of the water inlet of valve, one end of the first regulating valve, the first water pump, the other end and wind-tunnel of the first regulating valve
The delivery port connection of heat exchanger, one end of the second regulating valve delivery port, the first regulating valve respectively with wind-tunnel heat exchanger is in addition
One end connects, and the other end of the second regulating valve delivery port respectively with check valve, cooling water source are connected, the delivery port of check valve
It is connected with cooling water source；Be pumped into for extraneous cooling water to come by the second water pump, and then the first water pump takes a part away to wind-tunnel heat exchanger,
Remaining part returns to cooling water source through check valve, and a wind-tunnel heat exchanger hot water part out returns to the external world through the second regulating valve,
A part returns to wind-tunnel heat exchanger through the first regulating valve and the first water pump；It is accurate using PID controller according to wind-tunnel target stagnation temperature
Two capacities of returns of regulating valve of control, also control two inflows of water pump respectively simultaneously, because capacity of returns is different, are adjusted by first
The water for saving valve is different from the mixed temperature of water come by the second water pump, and the water temperature into wind-tunnel heat exchanger is different, so that
Control heat transfer temperature difference, i.e. precise control wind-tunnel stagnation temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037181.0A CN106706260A (en) | 2016-11-23 | 2016-11-23 | System for precisely controlling total temperature of continuous transonic wind tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037181.0A CN106706260A (en) | 2016-11-23 | 2016-11-23 | System for precisely controlling total temperature of continuous transonic wind tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106706260A true CN106706260A (en) | 2017-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611037181.0A Pending CN106706260A (en) | 2016-11-23 | 2016-11-23 | System for precisely controlling total temperature of continuous transonic wind tunnel |
Country Status (1)
| Country | Link |
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| CN (1) | CN106706260A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907121A (en) * | 2019-11-14 | 2020-03-24 | 江苏永昇空调有限公司 | Wind tunnel heat exchange system |
| CN114353363A (en) * | 2022-03-10 | 2022-04-15 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing wind tunnel heat exchanger outlet airflow temperature control system and method |
| CN116483141A (en) * | 2023-06-20 | 2023-07-25 | 中国航空工业集团公司沈阳空气动力研究所 | Total temperature control system for continuous transonic wind tunnel and control method thereof |
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| US7401505B1 (en) * | 2007-01-09 | 2008-07-22 | The United States Of America As Represented By The Secretary Of The Navy | Low cost wind tunnel for supersonic and hypersonic aerothermal testing |
| CN202216854U (en) * | 2011-09-26 | 2012-05-09 | 上海佐竹冷热控制技术有限公司 | Enthalpy difference wind tunnel for testing air conditioner performance |
| CN104374542A (en) * | 2014-11-22 | 2015-02-25 | 中国航空工业空气动力研究院 | Atmospheric environmental wind tunnel temperature stratification simulation system |
| CN104990337A (en) * | 2015-06-19 | 2015-10-21 | 青岛华控能源科技有限公司 | Circulating cooling water system and cooling water circulation method thereof |
| CN204853767U (en) * | 2015-07-22 | 2015-12-09 | 上海佐竹冷热控制技术有限公司 | Air conditioning system of environmental wind tunnel laboratory |
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2016
- 2016-11-23 CN CN201611037181.0A patent/CN106706260A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7401505B1 (en) * | 2007-01-09 | 2008-07-22 | The United States Of America As Represented By The Secretary Of The Navy | Low cost wind tunnel for supersonic and hypersonic aerothermal testing |
| CN202216854U (en) * | 2011-09-26 | 2012-05-09 | 上海佐竹冷热控制技术有限公司 | Enthalpy difference wind tunnel for testing air conditioner performance |
| CN104374542A (en) * | 2014-11-22 | 2015-02-25 | 中国航空工业空气动力研究院 | Atmospheric environmental wind tunnel temperature stratification simulation system |
| CN104990337A (en) * | 2015-06-19 | 2015-10-21 | 青岛华控能源科技有限公司 | Circulating cooling water system and cooling water circulation method thereof |
| CN204853767U (en) * | 2015-07-22 | 2015-12-09 | 上海佐竹冷热控制技术有限公司 | Air conditioning system of environmental wind tunnel laboratory |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907121A (en) * | 2019-11-14 | 2020-03-24 | 江苏永昇空调有限公司 | Wind tunnel heat exchange system |
| CN114353363A (en) * | 2022-03-10 | 2022-04-15 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing wind tunnel heat exchanger outlet airflow temperature control system and method |
| CN114353363B (en) * | 2022-03-10 | 2022-05-17 | 中国空气动力研究与发展中心低速空气动力研究所 | Icing wind tunnel heat exchanger outlet airflow temperature control system and method |
| CN116483141A (en) * | 2023-06-20 | 2023-07-25 | 中国航空工业集团公司沈阳空气动力研究所 | Total temperature control system for continuous transonic wind tunnel and control method thereof |
| CN116483141B (en) * | 2023-06-20 | 2023-08-29 | 中国航空工业集团公司沈阳空气动力研究所 | Total temperature control system for continuous transonic wind tunnel and control method thereof |
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Application publication date: 20170524 |