CN109582057A - A kind of environmental wind tunnel temperature control system - Google Patents
A kind of environmental wind tunnel temperature control system Download PDFInfo
- Publication number
- CN109582057A CN109582057A CN201811333723.8A CN201811333723A CN109582057A CN 109582057 A CN109582057 A CN 109582057A CN 201811333723 A CN201811333723 A CN 201811333723A CN 109582057 A CN109582057 A CN 109582057A
- Authority
- CN
- China
- Prior art keywords
- water
- tunnel
- temperature
- branch
- wind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
-
- 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
- G01M9/02—Wind tunnels
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Fluid Mechanics (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses a kind of environmental wind tunnel temperature control systems, it includes wind-tunnel heat exchanger, main pipe loop and a plurality of heat exchange branch, wind-tunnel heat exchanger is installed on the expansion segment of wind-tunnel, main pipe loop is the pipeline for being connected to the inlet and outlet of wind-tunnel heat exchanger, a plurality of heat exchange branch circuit parallel connection is connected in main pipe loop and can be recycled each independently by main pipe loop, heat exchange branch includes refrigerating medium cycling element and heat exchange circulation unit, refrigerating medium cycling element includes going to flow tube road, return line, transfer tube, triple valve and adjusting branch, remove stream pipeline connection main pipe loop and heat exchange circulation unit, triple valve and transfer tube are sequentially installed with along flow direction on going to flow tube road, return line is in the communicating downstream main pipe loop and heat exchange circulation unit for going to flow tube road, it adjusts branch and goes to flow tube road by described in triple valve connection With the return line.The present invention changes mixing proportion according to temperature feedback using triple valve, and variable is unique, adjusts simple.
Description
Technical field
The present invention relates to a kind of environmental wind tunnel temperature control systems, especially for automotive-type environmental simulation wind tunnel test
Temperature control system.
Background technique
Environmental wind tunnel is mainly used for the air-conditioning system and cooling system of aircraft, automobile, train and other vehicles
Matching research and development, the correlation tests work such as heat management verifying, research varying environment factors on test properties of product influence and power pushes away
Into the optimization of system matching of system, the adaptive capacity to environment of certification test product.Environmental wind tunnel typically is provided with simulation high temperature, low
The climatic factors such as temperature, rainfall, snowfall, illumination.
Environmental wind tunnel temperature control system is the critical system of environmental wind tunnel, is mainly used for realizing Air Temperature in environmental wind tunnel
The control of degree.Temperature control system is mainly made of cryogenic refrigerating system, cooling water system, secondary refrigerant system etc..
The technological design of existing environmental wind tunnel temperature control system high temperature and low temperature and regulative mode degree of regulation be not high,
Energy consumption is big, and if high temperature is directly heated using electric heater for pipeline, heat exchange cycle system is using more than two two logical control valve tune
Section, low temperature is exchanged heat using cryogenic refrigerating system and secondary refrigerant system and realizes low-temperature test, and cooling water system and secondary refrigerant system
Make environmental wind tunnel temperature control precision not high independently of each other and without direct heat exchange etc., the variation of environmental wind tunnel Test heat load is not
It can obtain quickly accurate response etc..
Summary of the invention
Present invention solves the technical problem that being: overcome the deficiencies in the prior art devises a kind of novel environmental wind-tunnel temperature
Control system is spent, it can be achieved that environmental wind tunnel high-precision, fast, the energy-efficient temperature control of response.
Environmental wind tunnel temperature control system of the invention includes wind-tunnel heat exchanger, main pipe loop and a plurality of heat exchange branch,
The wind-tunnel heat exchanger is installed on the expansion segment of wind-tunnel, for carrying out integrally-regulated, the main pipe loop to wind-tunnel fluid temperature (F.T.)
For the pipeline of the inlet and outlet of the connection wind-tunnel heat exchanger, a plurality of heat exchange branch circuit parallel connection is connected to described be responsible for back
Road can simultaneously be recycled by the main pipe loop each independently, respectively via wind-tunnel heat exchanger to the stream in wind-tunnel
Body is freezed or is heated, and the heat exchange branch includes refrigerating medium cycling element and heat exchange circulation unit, the refrigerating medium
Cycling element includes removing flow tube road, return line, transfer tube, triple valve and adjusting branch, described that stream pipeline connection is gone to be responsible for back
Road and heat exchange circulation unit are sequentially installed with triple valve and transfer tube along flow direction on going to flow tube road, and the return line exists
Main pipe loop described in the communicating downstream for going to flow tube road and the heat exchange circulation unit can make as a result, by triple valve
The refrigerating medium that flow out from wind-tunnel heat exchanger exit via the main pipe loop and described removes flow tube road inflow heat exchange circulation list
Member flows into the wind-tunnel heat exchanger, the adjusting via the return line and the main pipe loop again after carrying out heat exchange
Branch goes to flow tube road and the return line by described in triple valve connection.
It is preferred that the heat exchange branch includes heating circulation branch road and refrigeration cycle branch.
It is preferred that the heat exchange circulation unit of the heating circulation branch road includes refrigerating medium heating heat exchanger, cold water pipeline, heat
Homogeneous solution-type reactor, hot water line and hot water transfer tube, it is described that flow tube road and the return line is gone to be respectively communicated with refrigerating medium heating heat exchange
The entrance and exit of refrigerating medium unit in device, the cold water pipeline and the hot water line are respectively communicated with refrigerating medium heating heat exchanger
Heating unit and hot-water boiler, the hot water transfer tube is mounted on the hot water line.
It is preferred that the refrigeration cycle branch includes room temperature refrigeration cycle branch and cryogenic refrigeration circulation branch road, the two it is described
Refrigerating medium cycling element respectively share one section go to flow tube road and one section of return line, share described in go on flow tube road along flow direction
It is sequentially installed with triple valve, level pressure expansion drum and surge tank, the surge tank downstream goes to flow tube road to separate room temperature to go to flow point road
Flow point road is gone to low temperature, transfer tube is separately installed in this two branches and is connected to respectively with respective heat exchange circulation unit,
The return line also separates room temperature reflux branch and low temperature reflux branch and is connected to respectively with respective heat exchange circulation unit.
It is preferred that the heat exchange circulation unit of the room temperature refrigeration branch include refrigerating medium cooling heat exchanger, room temperature thermostat valve,
Room temperature transfer tube, room temperature cold water pipeline, room temperature hot water line and water supplying unit, the room temperature go to flow point road and the room temperature to flow back
Branch is respectively communicated with the entrance and exit of refrigerating medium unit in the refrigerating medium cooling heat exchanger, and the water supplying unit includes cooling
Hydro-thermal water pot, cooling water cold water tank, cooling tower and cooling tower back water pump, the cooling water heat water pot and the cooling water cooling
Water pot is connected to via pipeline with the cooling tower respectively, and the cooling tower back water pump is mounted on the connection cooling water hot water
On the pipeline that tank is connected to the cooling tower, refrigerating medium cooling heat exchanger described in the room temperature cold water pipeline connection with it is described cold
But water cooling water pot, the room temperature hot water line is connected to the refrigerating medium cooling heat exchanger and the cooling water heat water pot, described normal
Warm thermostat valve is mounted on the room temperature hot water line, and the room temperature transfer tube is mounted on the room temperature cold water pipe road.
It is preferred that the heat exchange circulation unit of the cryogenic refrigeration branch includes cryogenic refrigerating system, low temperature thermostat valve, low temperature
Transfer tube, low-temperature cold water pipeline, low-temperature water heating pipeline and the water supplying unit, the low temperature go to flow point road and the low temperature reflux
Branch is respectively communicated with the entrance and exit of refrigerating medium unit in the cryogenic refrigerating system, described in the low-temperature cold water pipeline connection
Cryogenic refrigerating system and the cooling water cold water tank, cryogenic refrigerating system and the cooling described in the low-temperature water heating pipeline connection
Hydro-thermal water pot, the low temperature thermostat valve are mounted on the low-temperature water heating pipeline, and the low temperature transfer tube is mounted on the low temperature
Cold water pipe road.
It is also preferable to include adjusting branch, the adjusting branch be using pipeline connection before and after the triple valve described in go
Flow tube road, and the installation and adjustment triple valve on the pipeline.
It is preferred that the temperature regulating platform order range of the room temperature refrigeration unit is 35 DEG C~50 DEG C, the cryogenic refrigeration unit
Temperature regulating platform order range is≤35.
It is preferred that the temperature regulating range of the heating circulation branch road is >=50 DEG C.
It is preferred that positioned at the position of wind-tunnel heat exchanger upstream and room temperature hot water line and Low Temperature Thermal water pipe in wind-tunnel
Road is mounted on temperature sensor, can control to adjust respectively the triple valve according to the data of each temperature sensor measurement,
Room temperature thermostat valve and low temperature thermostat valve, so as to accurately control the temperature in the wind-tunnel.
The present invention has the beneficial effect that compared with existing wind-tunnel class temperature control system technology
(1) the three way type mixing valve that the present invention uses carries out temperature and adjusts the stabilization that valve two sides circular flow can be achieved,
Only change mixing proportion using temperature feedback, variable is unique, adjusts simple；
(2) the three way type mixing valve that uses of the present invention is using pneumatically can realizing valve quick acting, valve as making flowing mode
Door adjustment speed is fast；
(3) two sets of three way type mixing valves of major-minor that the present invention uses can be applied to the adjusting test of bigger load span；
(4) function that the present invention extends cooling water in such a way that cooling water coexists in series and parallel with secondary refrigerant system is answered
With making it be applied not only to equipment cooling, also as one of environmental wind tunnel temperature control system cold source, system is run more
Energy conservation；
(5) there are two types of functions for the cooling water heat water pot and cold water tank tool that the present invention uses, first is that accumulation cooling capacity, reduces cooling
Water tower power requirement can also reduce impact of the thermic load variation to cooling water system, play buffer function；
(6) present invention uses hot-water boiler to transfer heat to refrigerating medium by hot water as heat source and carries out temperature adjusting again
Mode can realize the steady operation of worst hot case, and avoid because class electric heater for pipeline directly to refrigerating medium heat generate part
The problem of overheat.
Detailed description of the invention
Fig. 1 is systematic schematic diagram of the invention.
Specific embodiment
As shown in Figure 1, environmental wind tunnel temperature control system of the present invention is mainly by environmental wind tunnel 1, wind-tunnel heat exchanger 2, refrigerating
The main transfer tube 3 of agent, the main thermostat valve 4 of the cold branch of refrigerating medium, the cold branch pair thermostat valve 5 of refrigerating medium, level pressure expansion drum 6, surge tank 7, refrigerating
Agent low temperature transfer tube 8, refrigerating medium room temperature transfer tube 9, the hot branch thermostat valve 10 of refrigerating medium, the hot branch transfer tube 11 of refrigerating medium, refrigerating medium
Heating heat exchanger 12, hot water transfer tube 13, hot-water boiler 14, cryogenic refrigerating system 15, refrigerating medium cooling heat exchanger 16, pipeline
17, cooling water refrigerating medium transfer tube 18, cooling water cryogenic refrigerating system transfer tube 19, cooling water refrigerating medium thermostat valve 20, cooling
Water cryogenic refrigerating system thermostat valve 21, cooling water heat water pot 22, cooling water cold water tank 23, cooling tower 24, cooling tower return water
The composition such as pump 25, temperature sensor 26.Wherein wind-tunnel heat exchanger 2 is located at the intracorporal diffuser in 1 hole of environmental wind tunnel.The main drive of refrigerating medium
Dynamic pump 3, the main thermostat valve 4 of the cold branch of refrigerating medium, the cold branch pair thermostat valve 5 of refrigerating medium, level pressure expansion drum 6, surge tank 7, refrigerating medium low temperature
Transfer tube 8, the hot branch thermostat valve 10 of refrigerating medium, the hot branch transfer tube 11 of refrigerating medium, is connected by pipeline 17 refrigerating medium room temperature transfer tube 9
It is connected to wind-tunnel heat exchanger 2,12 cold end of refrigerating medium heating heat exchanger, 16 cold end of refrigerating medium cooling heat exchanger and cryogenic refrigerating system 15
Circulation loop is formed, which is known as secondary refrigerant system.Hot water transfer tube 13 and hot-water boiler 14 pass through pipeline 14 and refrigerating medium
12 hot end of heating heat exchanger connects to form circulation loop, which is known as hot-water heating system.Cooling water refrigerating medium transfer tube 18, cooling
Water cryogenic refrigerating system transfer tube 19, cooling water refrigerating medium thermostat valve 20, cooling water cryogenic refrigerating system thermostat valve 21 pass through pipe
Road 17 and cooling water heat water pot 22, cooling water cold water tank 23 form circulation loop, and cooling tower 24, cooling tower back water pump 25 are logical
17 cooling water heat water pot 22 of piping, cooling water cold water tank 23 form circulation loop, the two circuits are referred to as cooling water system.
In 1 hole body of environmental wind tunnel in 2 front end air-flow of wind-tunnel heat exchanger and cooling water refrigerating medium transfer tube 18, cooling water cryogenic refrigeration system
Temperature sensor 26 is mounted on pipeline 17 after system transfer tube 19.Hot test of the cooling water system for environmental wind tunnel is dropped
Temperature, the cooling of environmental wind tunnel process equipment etc.；Secondary refrigerant system is used for the control and management of environmental wind tunnel heat transferring medium (refrigerating medium),
Hot-water heating system is used for the high ambient conditions provided for environmental wind tunnel.Temperature control system principle is as shown in Figure 1.
Each subsystem of temperature control system carries out the transmitting of heat by dividing wall type heat exchanger, and flowing is situated between in cooling water system
Matter is cooling water, cooling water system in entire temperature control system main effect first is that by cryogenic refrigerating system refrigerant from
The heat that the heat exchanger (evaporator of cryogenic refrigerating system) of cryogenic refrigerating system 15 absorbs refrigerating medium is taken away, second is that passing through refrigerating
Agent cooling heat exchanger 16 directly absorbs the heat of refrigerating medium, cools down to refrigerating medium.
Flow media is refrigerating medium in secondary refrigerant system, and effect of the secondary refrigerant system in temperature control system is first is that by ring
The gas heat of border wind-tunnel 1 is transferred to cryogenic refrigerating system or cooling water system, second is that passing through the heater in secondary refrigerant system
Wind-tunnel heat exchanger 2 is transferred heat to, and then the temperature of gas in environmental wind tunnel 1 is adjusted.
Flow media is hot water in hot-water heating system, and the effect of hot-water heating system is that the thermal energy in hot-water boiler 14 is transferred to load
Cryogen system.
Energy conservation and environmental protection is fully considered in design of temperature control system, and temperature control is rationally designed according to different tests operating condition load
System flow processed, while using advanced mixed flow control equipment-, (refrigerating medium is cold for Pneumatic three-way mixing valve in system design
The main thermostat valve 4 of branch, the cold branch pair thermostat valve 5 of refrigerating medium, the hot branch thermostat valve 10 of refrigerating medium, cooling water refrigerating medium thermostat valve 20, cooling
Water cryogenic refrigerating system thermostat valve 21), the device be adjust cold and hot two kinds of fluids mixed proportion and flow and can end three
The change of the multi-functional mixing valve of general formula, the flowing hole sectional area which is formed using movement of the spool in valve reaches any flow
And it is followed by changing the flow proportional in valve difference channel without changing valve two sides when the excellent mode of ratio, i.e. adjusting temperature
The total flow of ring reaches unique variable adjusting, and pneumatic action mechanism is swift in response, and in general, valve precision is high and efficient.Together
When the valve be alternatively arranged as common shut-off valve and use, meet and freezing or heating the switching of both of which.
Cooling water system and cryogenic refrigerating system interconnect and are connected in parallel to secondary refrigerant system, cooling water system and cryogenic refrigeration system
A mixing valve (cooling water refrigerating medium thermostat valve 20, cooling water cryogenic refrigerating system is respectively configured with secondary refrigerant system junction in system
Thermostat valve 21), the direction of flowing back of cooling water cryogenic refrigerating system thermostat valve 21 is closed when worst cold case, and secondary refrigerant system passes through cooling
Water cryogenic refrigerating system thermostat valve 21 and 15 connection of cryogenic refrigerating system carry out heat exchange, and when room temperature operating condition passes through cooling water refrigerating
Agent thermostat valve 20 and cooling water system connection carry out heat exchange, and when worst hot case passes through the refrigerating medium Re Zhiwen in secondary refrigerant system
It controls valve 10 and secondary refrigerant system connection carries out heat exchange.
Design of temperature control system is considered based on energy conservation and environmental protection, according to 1 service condition of environmental wind tunnel, Three models is divided to transport
Row, respectively low-temperature operation modes (≤35 DEG C), room temperature operational mode (35 DEG C~50 DEG C) and hot operation mode (>=50 DEG C).
Since the cooling operating condition hot-cool demand temperature difference is larger, thereby increases and it is possible to it is larger to there is a situation where that thermic load fluctuates, in temperature control system
Provided with level pressure expansion drum 6, the pressure for stablizing refrigerating medium is stablized, and is also provided with surge tank 7 for eliminating big load fluctuation
Impacting on the load cataclysm of cryogenic refrigerating system 15 and refrigerating medium cooling heat exchanger 16 influences.In order to adequacy test load difference compared with
Big situation has been specifically designed two sets of temp.-control valves (the main thermostat valve 4 of the cold branch of refrigerating medium, the cold branch pair of refrigerating medium for cooling condition
Thermostat valve 5) Lai Shiying large span thermic load temperature Control experiment.The principle of different operational modes is as follows:
Low-temperature operation modes:
Open the main transfer tube 3 of refrigerating medium, refrigerating medium low temperature transfer tube 8, cooling water cryogenic refrigerating system transfer tube 19, cooling
The hot branch transfer tube of spray and fan, hot water transfer tube 13, hot-water boiler 14, refrigerating medium of water tower back water pump 25 and cooling tower 24
11, secondary refrigerant system circulation loop starts running, and cooling water system and hot-water heating system also start running, and starts cryogenic refrigerating system
15, the high-temperature gas in environmental wind tunnel 1 is by transferring heat to the refrigerating medium in wind-tunnel heat exchanger 2, quilt after wind-tunnel heat exchanger 2
The refrigerating medium of heating transfers heat to main 4 branch of thermostat valve of the cold branch of refrigerating medium along pipeline 17, and low by the entrance of surge tank 7
The evaporator of temp, refrigerating system 15, refrigerant circuit in cryogenic refrigerating system 15 is by heat from 15 evaporator of cryogenic refrigerating system
It is transferred to 15 condenser of cryogenic refrigerating system, the cooling water in 15 condenser of cryogenic refrigerating system passes through cooling water circulation loop stream
Into cooling water heat water pot 22, the cooling water being heated is returned to cooling tower 24 and is passed through heat by cooling tower back water pump 25
Cooling tower is scattered to large natural environment.The variation of thermic load in environmental wind tunnel 1 is reflected into the temperature of wind-tunnel heat exchanger front end in real time
Sensor 26 is spent, temperature feedback signal is transferred to the main thermostat valve 4 of the cold branch of refrigerating medium, which is adjusted in real time out of wind-tunnel heat exchanger 2
The flow reflux ratio of flowing refrigerating medium then adjusts the main thermostat valve 4 of the cold branch of refrigerating medium if the thermic load in environmental wind tunnel 1 is larger
The flow reflux ratio that refrigerating medium is flowed out of wind-tunnel heat exchanger 2 is increased, it is most of to flow refrigerating medium out of wind-tunnel heat exchanger 2
Biggish energy, the cooling that the major part in 15 condenser of cryogenic refrigerating system is heated are obtained after flowing through cryogenic refrigerating system 15
Water flows into cooling water heat water pot 22 by the adjusting of cooling water cryogenic refrigerating system thermostat valve 21, then passes through cooling tower back water pump
25 return to cooling tower 24 and heat are scattered to large natural environment by cooling tower.If the thermic load in environmental wind tunnel 1 is smaller,
Then adjusting the main thermostat valve 4 of the cold branch of refrigerating medium reduces the flow reflux ratio that refrigerating medium is flowed out of wind-tunnel heat exchanger 2, most of
It flows after refrigerating medium flows through the main thermostat valve 4 of the cold branch of refrigerating medium and is returned to again from wind-tunnel heat exchanger 2, only out of wind-tunnel heat exchanger 2
Fraction, which flows refrigerating medium out of wind-tunnel heat exchanger 2 and flows through, to be obtained lesser energy after cryogenic refrigerating system 15 and is able to satisfy environment
The heat balance of wind-tunnel 1, the major part in 15 condenser of cryogenic refrigerating system are heated cooling water and pass through cryogenic refrigerating system temperature
The adjusting of control valve 21 is returned to 15 condenser of cryogenic refrigerating system, and only small part flows into cooling water heat water pot 22, then by cold
But water tower back water pump 25 returns to cooling tower 24 and heat is scattered to large natural environment by cooling tower.When there is temperature overshoot
The case where or 1 load of environmental wind tunnel adjust refrigerating medium hot branch thermostat valve 10 when there is rapid drawdown and heat made to be transferred to load from hot-water heating system
Cryogen system stablizes air themperature in environmental wind tunnel 1.
Room temperature operational mode:
Room temperature cooling capacity is transferred to the refrigerating medium of secondary refrigerant system by cooling water system by cooling water, secondary refrigerant system is logical
It crosses refrigerating medium and room temperature cooling capacity is transferred to air in environmental wind tunnel 1, realize the control of 1 temperature of environmental wind tunnel.The operational mode need not
Cryogenic refrigerating system 15 is opened, realizes that room temperature temperature controls in environmental wind tunnel 1 using outdoor elements condition.
The main transfer tube 3 of refrigerating medium, refrigerating medium room temperature transfer tube 9, cooling water refrigerating medium thermostat valve 20, cooling tower is opened to return
The spray and fan of water pump 25 and cooling tower 24, the hot branch transfer tube 11 of hot water transfer tube 13, hot-water boiler 14, refrigerating medium carry
Cryogen system circulation circuit starts running, and cooling water system and hot-water heating system also start running, the high-temperature gas in environmental wind tunnel 1
By the refrigerating medium transferred heat in wind-tunnel heat exchanger 2 after wind-tunnel heat exchanger 2, the refrigerating medium being heated will along pipeline 17
Heat transfer enters refrigerating medium cooling heat exchanger 16 to main 4 branch of thermostat valve of the cold branch of refrigerating medium, and by surge tank 7, and passes through
Refrigerating medium cooling heat exchanger 16 transfers heat to the cooling water of refrigerating medium cooling heat exchanger 16, then passes through cooling water circulation loop
Cooling water heat water pot 22 is flowed into, the cooling water being heated is returned to cooling tower 24 and led to heat by cooling tower back water pump 25
Supercooling water tower is scattered to large natural environment.The variation of thermic load in environmental wind tunnel 1 is reflected into wind-tunnel heat exchanger front end in real time
Temperature sensor 26, temperature feedback signal are transferred to the main thermostat valve 4 of the cold branch of refrigerating medium, which is adjusted in real time from wind-tunnel heat exchanger 2
The flow reflux ratio of interior flowing refrigerating medium then adjusts the main thermostat valve of the cold branch of refrigerating medium if the thermic load in environmental wind tunnel 1 is larger
4 increase the flow reflux ratio that refrigerating medium is flowed out of wind-tunnel heat exchanger 2, most of to flow refrigerating out of wind-tunnel heat exchanger 2
Agent obtains biggish energy after flowing through refrigerating medium cooling heat exchanger 16, what the major part in refrigerating medium cooling heat exchanger 16 was heated
Cooling water flows into cooling water heat water pot 22 by the adjusting of cooling water refrigerating medium thermostat valve 20, then passes through cooling tower back water pump 25
It returns to cooling tower 24 and heat is scattered to large natural environment by cooling tower.If the thermic load in environmental wind tunnel 1 is smaller, then
Adjusting the main thermostat valve 4 of the cold branch of refrigerating medium reduces the flow reflux ratio that refrigerating medium is flowed out of wind-tunnel heat exchanger 2, it is most of from
Flowing refrigerating medium is returned to again after flowing through the main thermostat valve 4 of the cold branch of refrigerating medium from wind-tunnel heat exchanger 2 in wind-tunnel heat exchanger 2, only small
Part, which is flowed refrigerating medium out of wind-tunnel heat exchanger 2 and flowed through, to be obtained lesser energy after refrigerating medium cooling heat exchanger 16 and is able to satisfy ring
The heat balance of border wind-tunnel 1, the major part in refrigerating medium cooling heat exchanger 16 are heated cooling water and pass through cooling water refrigerating medium temperature
The adjusting of control valve 20 is returned in refrigerating medium cooling heat exchanger 16, and only small part flows into cooling water heat water pot 22, then by cold
But water tower back water pump 25 returns to cooling tower 24 and heat is scattered to large natural environment by cooling tower.When there is temperature overshoot
The case where or 1 load of environmental wind tunnel adjust refrigerating medium hot branch thermostat valve 10 when there is rapid drawdown and heat made to be transferred to load from hot-water heating system
Cryogen system stablizes air themperature in environmental wind tunnel 1.
Hot operation mode:
Refrigerating medium is heated by the refrigerating medium heating heat exchanger 12 on its pipeline by secondary refrigerant system, then passes through refrigerating
Agent transfers heat to air in environmental wind tunnel 1, realizes the control of 1 temperature of environmental wind tunnel.Refrigerating medium system is used only in the operational mode
System heating internal-circulation, reduces refrigerating medium flow range to greatest extent, reduces thermal loss, realizes energy-saving run.
Open the main transfer tube 3 of refrigerating medium, hot water transfer tube 13, hot-water boiler 14, the hot branch transfer tube 11 of refrigerating medium, refrigerating medium
Room temperature transfer tube 9, cooling water refrigerating medium thermostat valve 20, cooling tower back water pump 25 and cooling tower 24 spray and fan, carry
Cryogen system circulation circuit starts running, and cooling water system also starts running, and hot-water heating system also starts running.In environmental wind tunnel 1
Cryogenic gas by the way that cooling capacity is transferred to the refrigerating medium in wind-tunnel heat exchanger 2, cooled refrigerating medium edge after wind-tunnel heat exchanger 2
Pipeline 17 cooling capacity is transferred to refrigerating medium heating heat exchanger 12, and cooling capacity is transferred to by load by refrigerating medium heating heat exchanger 12
The hot water of cryogen heating heat exchanger 12, then hot-water boiler 14 is flowed by hot water circulation loop, cooled hot water passes through hot water
Boiler is heated again to be again introduced into hot water circuit and exchanges heat.Similarly, the variation of the refrigeration duty in environmental wind tunnel 1 is reflected into real time
The temperature sensor 26 of wind-tunnel heat exchanger front end, temperature feedback signal are transferred to the hot branch thermostat valve 10 of refrigerating medium, which adjusts in real time
The flow reflux ratio for saving the flowing refrigerating medium out of wind-tunnel heat exchanger 2 then adjusts load if the refrigeration duty in environmental wind tunnel 1 is larger
The hot branch thermostat valve 10 of cryogen increases the flow reflux ratio that refrigerating medium is flowed out of wind-tunnel heat exchanger 2, most of to change from wind-tunnel
Flowing refrigerating medium, which flows through, in hot device 2 obtains biggish energy after refrigerating medium heating heat exchanger 12, in refrigerating medium heating heat exchanger 12
Cooled hot water hot-water boiler 14 is flowed by hot water transfer tube 13, be again introduced into hot water after heating by hot-water boiler 14
Circulation exchanges heat.If the refrigeration duty in environmental wind tunnel 1 is smaller, then adjusting the hot branch thermostat valve 10 of refrigerating medium makes from wind-tunnel heat exchanger
The flow reflux ratio reduction of flowing refrigerating medium in 2, only fraction flow refrigerating medium out of wind-tunnel heat exchanger 2 and flow through refrigerating medium
After heating heat exchanger 12 and lesser energy is obtained, the cooled hot water in refrigerating medium heating heat exchanger 12 is driven by hot water
Pump 13 flows into hot-water boiler 14, is again introduced into hot water circuit after heating by hot-water boiler 14 and exchanges heat.
The main thermostat valve 4 of the cold branch of refrigerating medium is adjusted when there is the case where temperature overshoot or rapid drawdown occurs in 1 load of environmental wind tunnel
So that cooling capacity is transferred to wind-tunnel heat exchanger 2 from refrigerating medium system buffer tank end, stablizes air themperature in environmental wind tunnel 1.
The common knowledge that content belongs to those skilled in the art is not described in detail in description of the invention.
Claims (10)
1. a kind of environmental wind tunnel temperature control system, it is characterised in that: including wind-tunnel heat exchanger, main pipe loop and a plurality of heat exchange
Branch, the wind-tunnel heat exchanger are installed on the expansion segment of wind-tunnel, for carrying out integrally-regulated, the supervisor to wind-tunnel fluid temperature (F.T.)
Circuit is the pipeline for being connected to the inlet and outlet of the wind-tunnel heat exchanger, and a plurality of heat exchange branch circuit parallel connection is connected to the master
It can be recycled each independently on tube loop and by the main pipe loop, respectively via wind-tunnel heat exchanger in wind-tunnel
Fluid freezed or heated, the heat exchange branch includes refrigerating medium cycling element and heat exchange circulation unit, the load
Refrigerant cycle unit includes removing flow tube road, return line, transfer tube, triple valve and adjusting branch, described to go stream pipeline connection master
Tube loop and heat exchange circulation unit are sequentially installed with triple valve and transfer tube, the return pipe along flow direction on going to flow tube road
Road main pipe loop described in the communicating downstream for going to flow tube road and the heat exchange circulation unit, thus make by triple valve
From wind-tunnel heat exchanger exit flow out refrigerating medium via the main pipe loop and it is described go flow tube road flow into heat exchange circulation unit,
The wind-tunnel heat exchanger, the adjusting branch are flowed into via the return line and the main pipe loop again after carrying out heat exchange
Flow tube road and the return line are gone to by described in triple valve connection.
2. environmental wind tunnel temperature control system according to claim 1, it is characterised in that: the heat exchange branch includes system
Thermal cycle branch and refrigeration cycle branch.
3. environmental wind tunnel temperature control system according to claim 2, it is characterised in that: the heat of the heating circulation branch road
Exchange cycles unit includes refrigerating medium heating heat exchanger, cold water pipeline, hot-water boiler, hot water line and hot water transfer tube, described
Flow tube road and the return line is gone to be respectively communicated with the entrance and exit of refrigerating medium unit in refrigerating medium heating heat exchanger, it is described cold
Water lines and the hot water line are respectively communicated with the heating unit and hot-water boiler of refrigerating medium heating heat exchanger, the hot water driving
Pump is mounted on the hot water line.
4. environmental wind tunnel temperature control system according to claim 2, it is characterised in that: the refrigeration cycle branch includes
Room temperature refrigeration cycle branch and cryogenic refrigeration circulation branch road, the refrigerating medium cycling element of the two respectively share one section go flow tube road and
One section of return line, share described in go on flow tube road along flow direction be sequentially installed with triple valve, level pressure expansion drum and surge tank,
The surge tank downstream goes to flow tube road to separate room temperature to go to flow point road and low temperature to go to flow point road, be separately installed in this two branches
Transfer tube is simultaneously connected to respective heat exchange circulation unit respectively, and the return line also separates room temperature reflux branch and low temperature returns
Flow point road is simultaneously connected to respective heat exchange circulation unit respectively.
5. environmental wind tunnel temperature control system according to claim 4, it is characterised in that: the heat of the room temperature refrigeration branch
Exchange cycles unit includes refrigerating medium cooling heat exchanger, room temperature thermostat valve, room temperature transfer tube, room temperature cold water pipeline, room temperature hot water
Pipeline and water supplying unit, the room temperature go to flow point road and room temperature reflux branch to be respectively communicated with the refrigerating medium cooling heat exchanger
The entrance and exit of middle refrigerating medium unit, the water supplying unit include cooling water heat water pot, cooling water cold water tank, cooling tower and
Cooling tower back water pump, the cooling water heat water pot and the cooling water cold water tank connect via pipeline and the cooling tower respectively
Logical, the cooling tower back water pump, which is mounted on, to be connected on the pipeline that the cooling water heat water pot is connected to the cooling tower, institute
State refrigerating medium cooling heat exchanger described in room temperature cold water pipeline connection and the cooling water cold water tank, the room temperature hot water line connection
The refrigerating medium cooling heat exchanger and the cooling water heat water pot, the room temperature thermostat valve are mounted on the room temperature hot water line
On, the room temperature transfer tube is mounted on the room temperature cold water pipe road.
6. environmental wind tunnel temperature control system according to claim 5, it is characterised in that: the heat of the cryogenic refrigeration branch
Exchange cycles unit includes cryogenic refrigerating system, low temperature thermostat valve, low temperature transfer tube, low-temperature cold water pipeline, low-temperature water heating pipeline
With the water supplying unit, the low temperature goes to flow point road and the low temperature reflux branch to be respectively communicated in the cryogenic refrigerating system and carry
The entrance and exit of cryogen unit, cryogenic refrigerating system and the cooling water cold water tank described in the low-temperature cold water pipeline connection,
Cryogenic refrigerating system described in the low-temperature water heating pipeline connection and the cooling water heat water pot, the low temperature thermostat valve are mounted on institute
It states on low-temperature water heating pipeline, the low temperature transfer tube is mounted on the low-temperature cold water pipeline.
7. the environmental wind tunnel temperature control system according to any one of claim 4~6, it is characterised in that: further include adjusting
Save branch, the adjusting branch using pipeline connection before and after the triple valve described in go on flow tube road, and in the pipeline
Upper installation and adjustment triple valve.
8. the environmental wind tunnel temperature control system according to any one of claim 4~6, it is characterised in that: the room temperature
The temperature regulating platform order range of refrigeration unit is 35 DEG C~50 DEG C, the temperature regulating platform order range of the cryogenic refrigeration unit is≤
35℃。
9. the environmental wind tunnel temperature control system according to any one of claim 4~6, it is characterised in that: the heating
The temperature regulating range of circulation branch road is >=50 DEG C.
10. environmental wind tunnel temperature control system according to claim 1, it is characterised in that: be located at the wind in wind-tunnel
It is mounted on temperature sensor on the position of hole heat exchanger upstream and room temperature hot water line and low-temperature water heating pipeline, according to each temperature
The data of degree sensor measurement control to adjust the triple valve, room temperature thermostat valve and low temperature thermostat valve respectively, thus described in control
Temperature in wind-tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811333723.8A CN109582057B (en) | 2018-11-09 | 2018-11-09 | Environmental wind tunnel temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811333723.8A CN109582057B (en) | 2018-11-09 | 2018-11-09 | Environmental wind tunnel temperature control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109582057A true CN109582057A (en) | 2019-04-05 |
| CN109582057B CN109582057B (en) | 2021-10-01 |
Family
ID=65922000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811333723.8A Active CN109582057B (en) | 2018-11-09 | 2018-11-09 | Environmental wind tunnel temperature control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109582057B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440505A (en) * | 2019-06-27 | 2019-11-12 | 合肥通用机械研究院有限公司 | A kind of wind-tunnel temperature control system of Two-way Cycle refrigerating medium Collaborative Control |
| CN112729755A (en) * | 2021-01-29 | 2021-04-30 | 北京朗信智能科技有限公司 | System and method for regulating and controlling temperature of environmental wind tunnel test cabin |
| CN112729747A (en) * | 2020-12-30 | 2021-04-30 | 中国航天空气动力技术研究院 | Automobile environment wind tunnel process equipment control system |
| CN113029610A (en) * | 2021-04-14 | 2021-06-25 | 中南大学 | Snow accumulation and icing wind tunnel test system and test method for railway train bogie |
| CN114112282A (en) * | 2021-11-22 | 2022-03-01 | 哈尔滨工业大学 | Large-scale low-temperature controllable atmospheric boundary layer test system and method for wind and snow simulation |
| CN114281133A (en) * | 2021-12-30 | 2022-04-05 | 中国汽车工程研究院股份有限公司 | Control method for rapid temperature change of automobile environment wind tunnel |
| CN114296490A (en) * | 2021-12-30 | 2022-04-08 | 中国汽车工程研究院股份有限公司 | Automobile environment wind tunnel temperature feedforward control method |
| 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 |
| CN114486265A (en) * | 2022-04-01 | 2022-05-13 | 中国飞机强度研究所 | Cold carrying system for aircraft extreme temperature test and parameter design method thereof |
| CN114623649A (en) * | 2022-05-17 | 2022-06-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Continuous wind tunnel airflow temperature cooling system |
| CN114858403A (en) * | 2022-05-17 | 2022-08-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Continuous wind tunnel airflow temperature cooling method |
| CN116718065A (en) * | 2023-08-09 | 2023-09-08 | 中国空气动力研究与发展中心高速空气动力研究所 | Water-cooling pipeline installation method for controlling air temperature uniformity of large continuous wind tunnel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102129259A (en) * | 2010-01-20 | 2011-07-20 | 北京航空航天大学 | Neural network proportion integration (PI)-based intelligent temperature control system and method for sand dust environment test wind tunnel |
| US20120048953A1 (en) * | 2009-07-15 | 2012-03-01 | Beihang University | Temperature adjusting device and an intelligent temperature control method for a sand and dust environment testing system |
| CN103018047A (en) * | 2012-12-03 | 2013-04-03 | 潍柴动力股份有限公司 | Engine rig test device and engine water temperature control device |
| CN205317441U (en) * | 2015-12-17 | 2016-06-15 | 上海德朗汽车零部件制造有限公司 | A supplementary cryogenic cooling water system for auto radiator wind tunnel test platform |
| CN206618061U (en) * | 2017-02-24 | 2017-11-07 | 上海佐竹冷热控制技术有限公司 | Automobile wind tunnel test room air-conditioning system |
-
2018
- 2018-11-09 CN CN201811333723.8A patent/CN109582057B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120048953A1 (en) * | 2009-07-15 | 2012-03-01 | Beihang University | Temperature adjusting device and an intelligent temperature control method for a sand and dust environment testing system |
| CN102129259A (en) * | 2010-01-20 | 2011-07-20 | 北京航空航天大学 | Neural network proportion integration (PI)-based intelligent temperature control system and method for sand dust environment test wind tunnel |
| CN103018047A (en) * | 2012-12-03 | 2013-04-03 | 潍柴动力股份有限公司 | Engine rig test device and engine water temperature control device |
| CN205317441U (en) * | 2015-12-17 | 2016-06-15 | 上海德朗汽车零部件制造有限公司 | A supplementary cryogenic cooling water system for auto radiator wind tunnel test platform |
| CN206618061U (en) * | 2017-02-24 | 2017-11-07 | 上海佐竹冷热控制技术有限公司 | Automobile wind tunnel test room air-conditioning system |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440505A (en) * | 2019-06-27 | 2019-11-12 | 合肥通用机械研究院有限公司 | A kind of wind-tunnel temperature control system of Two-way Cycle refrigerating medium Collaborative Control |
| CN112729747A (en) * | 2020-12-30 | 2021-04-30 | 中国航天空气动力技术研究院 | Automobile environment wind tunnel process equipment control system |
| CN112729747B (en) * | 2020-12-30 | 2023-04-14 | 中国航天空气动力技术研究院 | Automobile environment wind tunnel process equipment control system |
| CN112729755A (en) * | 2021-01-29 | 2021-04-30 | 北京朗信智能科技有限公司 | System and method for regulating and controlling temperature of environmental wind tunnel test cabin |
| CN113029610A (en) * | 2021-04-14 | 2021-06-25 | 中南大学 | Snow accumulation and icing wind tunnel test system and test method for railway train bogie |
| CN113029610B (en) * | 2021-04-14 | 2022-05-27 | 中南大学 | Snow accumulation and icing wind tunnel test system and test method for railway train bogie |
| CN114112282A (en) * | 2021-11-22 | 2022-03-01 | 哈尔滨工业大学 | Large-scale low-temperature controllable atmospheric boundary layer test system and method for wind and snow simulation |
| CN114112282B (en) * | 2021-11-22 | 2024-04-26 | 哈尔滨工业大学 | Large-scale low-temperature controllable atmospheric boundary layer test system and method for wind and snow simulation |
| CN114489174B (en) * | 2021-12-28 | 2023-03-07 | 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 |
| 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 |
| CN114281133A (en) * | 2021-12-30 | 2022-04-05 | 中国汽车工程研究院股份有限公司 | Control method for rapid temperature change of automobile environment wind tunnel |
| CN114281133B (en) * | 2021-12-30 | 2022-06-24 | 中国汽车工程研究院股份有限公司 | Control method for rapid temperature change of automobile environment wind tunnel |
| CN114296490B (en) * | 2021-12-30 | 2022-07-29 | 中国汽车工程研究院股份有限公司 | Feedforward control method for temperature of automobile environment wind tunnel |
| CN114296490A (en) * | 2021-12-30 | 2022-04-08 | 中国汽车工程研究院股份有限公司 | Automobile environment wind tunnel temperature feedforward control method |
| CN114486265B (en) * | 2022-04-01 | 2022-06-24 | 中国飞机强度研究所 | Cold carrying system for aircraft extreme temperature test and parameter design method thereof |
| CN114486265A (en) * | 2022-04-01 | 2022-05-13 | 中国飞机强度研究所 | Cold carrying system for aircraft extreme temperature test and parameter design method thereof |
| CN114858403A (en) * | 2022-05-17 | 2022-08-05 | 中国空气动力研究与发展中心高速空气动力研究所 | Continuous wind tunnel airflow temperature cooling method |
| CN114623649A (en) * | 2022-05-17 | 2022-06-14 | 中国空气动力研究与发展中心高速空气动力研究所 | Continuous wind tunnel airflow temperature cooling system |
| CN114858403B (en) * | 2022-05-17 | 2023-03-10 | 中国空气动力研究与发展中心高速空气动力研究所 | Continuous wind tunnel airflow temperature cooling method |
| CN116718065A (en) * | 2023-08-09 | 2023-09-08 | 中国空气动力研究与发展中心高速空气动力研究所 | Water-cooling pipeline installation method for controlling air temperature uniformity of large continuous wind tunnel |
| CN116718065B (en) * | 2023-08-09 | 2023-10-20 | 中国空气动力研究与发展中心高速空气动力研究所 | Water-cooling pipeline installation method for controlling air temperature uniformity of large continuous wind tunnel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109582057B (en) | 2021-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109582057A (en) | A kind of environmental wind tunnel temperature control system | |
| CN203478768U (en) | Full-year combined refrigerating unit | |
| KR20140106834A (en) | System for Maintaining Thermostat with Constant Temperature | |
| CN103913316A (en) | Water and ethylene glycol type water source heat pump unit performance testing device | |
| CN103874894A (en) | Refrigeration system and refrigeration method providing heat recovery | |
| CN106989545A (en) | Refrigerant cooling device and air conditioner | |
| CN103294086B (en) | Constant-temperature liquid circulating device and temperature-controlling method | |
| CN101290148A (en) | Water energy-saving system for air quantity variable air conditioner | |
| CN200979287Y (en) | Constant temperature instant-heating air source heat pump hot water system adapted for low temperature | |
| CN110907121A (en) | Wind tunnel heat exchange system | |
| CN108679716B (en) | Heat exchange system | |
| CN111023414A (en) | Air conditioning system and dehumidification control method | |
| CN100541053C (en) | cooling/heating system and control method thereof | |
| KR101216048B1 (en) | Hybrid of Heat-pump system | |
| CN201583048U (en) | Heat pump water heater | |
| CN213564311U (en) | Multi-temperature water chilling unit | |
| CN203798594U (en) | Water-glycol type water source heat pump machine set performance testing device | |
| GB2578533A (en) | Refrigeration cycle device | |
| TWI620909B (en) | Cooling water system | |
| CN205536310U (en) | A refrigerating system for data center | |
| CN213841383U (en) | High-precision energy self-adaptive cooling unit | |
| CN220524251U (en) | Air conditioner and temperature regulating system thereof | |
| CN102353124B (en) | Method for controlling heat-humidity ratio of air conditioning system and fixed heat-humidity ratio type surface cooler | |
| CN114963596B (en) | Refrigerating system, damp-heat test box and control method of damp-heat test box | |
| US20210215406A1 (en) | Auxiliary heat source, air conditioning system with auxiliary heat source, and method therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |