CN103776122A - Ice wind tunnel humidity control method and special humidification system thereof - Google Patents
Ice wind tunnel humidity control method and special humidification system thereof Download PDFInfo
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- CN103776122A CN103776122A CN201310658810.1A CN201310658810A CN103776122A CN 103776122 A CN103776122 A CN 103776122A CN 201310658810 A CN201310658810 A CN 201310658810A CN 103776122 A CN103776122 A CN 103776122A
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Abstract
The invention belongs to the technical field of ice removal preventing tests, and relates to an ice wind tunnel humidity control method and a special humidification system thereof. The humidification system is composed of a vapor spraying device, a humidity controller, a humidity collection device and a heating device. The ice wind tunnel humidity control method comprises the following steps that firstly, the heating device is started to heat water to produce vapor; secondly, the humidity collection device monitors the humidity inside an ice wind tunnel in real time, and when the humidity value is smaller than a lower limit set value, the humidity controller turns on the vapor spraying device, and vapor is sprayed into the tunnel body of the ice wind tunnel through a nozzle; thirdly, the humidity value measured by the humidity collection device is observed continuously; fourthly, when the humidity value reaches an upper limit set value, the humidity controller turns off the vapor spraying device, and the vapor is stopped from being sprayed into the ice wind tunnel. The ice wind tunnel humidity control method is easy and convenient to implement, the humidification system is simple in configuration, control over the humidity inside tunnel body during ice wind tunnel test mist spraying can be effectively achieved, and the accuracy and effectiveness of a test result are ensured.
Description
Technical field
The invention belongs to anti-deicing experimental technique field, relate to a kind of icing tunnel humidity control method and special humidification system thereof.
Background technology
The control of the humidity liquid towards water content (LWC) in the body of icing tunnel hole has considerable influence.In the time that relative humidity is too low, the water of spraying system ejection just has part evaporation, keeps the liquid water yield just to decrease; And in the time of supersaturation, having again unnecessary steam therefrom freeze-outs, will change like this Liquid water content and drop diameter, make actual parameter and default testing site inconsistent, the environment that causes freezing is untrue, and result of the test is inaccurate.According to foreign literature introduction, relative humidity can arrive 100% to the issuable recruitment maximum that affects of LWC, and reduction maximum can arrive 30%.Therefore the humidity of tackling before spraying in the body of hole is controlled, and makes humidity reach the basic full state closing, to guarantee to freeze normally environment.
Summary of the invention
Technical problem to be solved by this invention is: a kind of control method and the special humidification system thereof of humidity in icing tunnel while being applicable to icing tests are provided, the humidity in wind-tunnel be can effectively control, the accuracy of water content parameter and the validity of result of the test guaranteed.
For addressing the above problem, technical scheme of the present invention is:
A kind of icing tunnel humidity control humidification system, is characterized by: described humidification system is made up of air jet system, humidity controller, humidity collector and heater four parts; Described air jet system is arranged between icing tunnel heat exchanger and the 4th turning, will add primary air direction in the vertical icing tunnel of thermogenetic steam spray in the body of icing tunnel hole by special nozzle; Air jet system is connected by pipeline with heater; It is external that heater is arranged on icing tunnel hole, and steam heater being produced by pipeline is introduced air jet system; Described humidity collector is a humidity sensor, is arranged in icing tunnel stable section, can be used for measuring the humidity value in current icing tunnel; Humidity controller and air jet system are electrical connection, and humidity controller and humidity collector are electrical connection simultaneously, and the current humidity that humidity controller feeds back to according to humidity collector is controlled air jet system work.
Apply an icing tunnel humidity control method for above-mentioned humidification system, it is characterized by described humidity control method and comprise the following steps:
The first step, opens heater, heats water to generation steam;
Second step, the humidity in humidity collector Real-Time Monitoring icing tunnel, when humidity is during lower than lower limit set value, humidity controller is opened air jet system, sprays into steam by nozzle in the body of icing tunnel hole;
The 3rd step, continues to observe the humidity value that humidity collector is measured;
The 4th step, in the time that humidity reaches upper limit set value, humidity controller turn-offs air jet system, stops the steam of spraying water in icing tunnel.
The beneficial effect that the present invention has is: the humidity control method in the present invention is easy and simple to handle, the humidification system configuration of its use is simple, humidity control can effectively realize icing tunnel test spraying time in the body of hole, make water content can meet test requirements document, the accuracy of guarantee test result and validity.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of a kind of icing tunnel humidity control humidification system in the present invention;
Wherein, 1-heater, 2-air jet system, 3-icing tunnel hole body, 4-humidity collector, 5-humidity controller.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further details.
Known according to the concept of humidity, what humidification system increased should be airborne steam.That is to say, when humidification, spraying in the body of hole should be vaporous water, rather than aqueous water, and therefore, humidification must adopt and add thermogenetic steam.
Humidity control method in the present invention produces steam by heating, then by special nozzle, steam is sprayed in the body of icing tunnel hole, directly reaches the effect of humidification.
Referring to Fig. 1, a kind of icing tunnel humidity control humidification system, is characterized by: described humidification system is made up of air jet system 2, humidity controller 5, humidity collector 4 and heater 1 four parts; Described air jet system 2 is arranged between icing tunnel evaporimeter and the 4th turning, will add thermogenetic steam uprush direction spray in the body of icing tunnel hole by special nozzle; Air jet system 2 is connected by pipeline with heater 1; It is external that heater 1 is arranged on icing tunnel hole, and steam heater 1 being produced by pipeline is introduced air jet system 2; Described humidity collector 4 is a humidity sensor, is arranged in icing tunnel stable section, can be used for measuring the humidity value in current icing tunnel; Humidity controller 5 is electrical connection with air jet system 2, humidity controller 5 is electrical connection with humidity collector 4 simultaneously, the current humidity that humidity controller 5 returns according to sensor feedback judges whether air jet system 2 needs work, can automatically stop jet in the time that the Pass Test of icing tunnel humidity requires.In the time of variations in temperature in the body of icing tunnel hole, humidity also can correspondingly change, and now needs humidification system to judge whether to need humidification according to the humidity value of measuring, and carries out air jet system 2 according to judged result and control.
Apply an icing tunnel humidity control method for above-mentioned humidification system, it is characterized by described humidity control method and comprise the following steps:
The first step, opens heater 1, heats water to generation steam;
Second step, the humidity in humidity collector 4 Real-Time Monitoring icing tunnels, when humidity is during lower than lower limit set value (being generally 70%), humidity controller 5 is opened air jet system 2, sprays into steam by nozzle in the body of icing tunnel hole;
The 3rd step, continues to observe the humidity value that humidity collector 4 is measured;
The 4th step, in the time that humidity reaches upper limit set value (being generally 90%), humidity controller 5 turn-offs air jet system 2, stops the steam of spraying water in icing tunnel.
Embodiment 1:
In icing tunnel, carry out product icing tests, setting test temperature is-20 ℃, and spray water content requirement is 0.5g/m
3.Refrigeration system continuous firing, carries out precooling, in the time that the temperature of icing tunnel test section is down to-20 ℃, now in the body of hole humidity display be 65%, lower than lower limit set value 70%.Open icing tunnel humidification system, humidity controller, according to the humidity value detecting, is opened air jet system 2, and hole body is carried out to humidification.Humidity value in the body of hole increases gradually, and in the time reaching 90%, humidity controller cuts out air jet system 2 automatically, stops jet.Now the state in icing tunnel meets test requirements document, can start spraying, carries out normal icing tests, realizes the control of humidity, has guaranteed the test effect of icing tunnel test.
Claims (2)
1. an icing tunnel humidity control humidification system, is characterized by: described humidification system is made up of air jet system, humidity controller, humidity collector and heater four parts; Described air jet system is arranged between icing tunnel heat exchanger and the 4th turning, will add primary air direction in the vertical icing tunnel of thermogenetic steam spray in the body of icing tunnel hole by special nozzle; Air jet system is connected by pipeline with heater; It is external that heater is arranged on icing tunnel hole, and steam heater being produced by pipeline is introduced air jet system; Described humidity collector is a humidity sensor, is arranged in icing tunnel stable section, can be used for measuring the humidity value in current icing tunnel; Humidity controller and air jet system are electrical connection, and humidity controller and humidity collector are electrical connection simultaneously, and the current humidity that humidity controller feeds back to according to humidity collector is controlled air jet system work.
2. application rights requires an icing tunnel humidity control method for humidification system described in 1, it is characterized by described humidity control method and comprises the following steps:
The first step, opens heater, heats water to generation steam;
Second step, the humidity in humidity collector Real-Time Monitoring icing tunnel, when humidity is during lower than lower limit set value, humidity controller is opened air jet system, sprays into steam by nozzle in the body of icing tunnel hole;
The 3rd step, continues to observe the humidity value that humidity collector is measured;
The 4th step, in the time that humidity reaches upper limit set value, humidity controller turn-offs air jet system, stops the steam of spraying water in icing tunnel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310658810.1A CN103776122B (en) | 2013-12-06 | 2013-12-06 | A kind of icing tunnel humidity control method and special humidification system thereof |
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| CN201310658810.1A CN103776122B (en) | 2013-12-06 | 2013-12-06 | A kind of icing tunnel humidity control method and special humidification system thereof |
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| CN103776122B CN103776122B (en) | 2016-06-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432279A (en) * | 2021-01-27 | 2021-03-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Isothermal isobaric humidification control system and control method for large icing wind tunnel body loop |
| CN116213364A (en) * | 2023-05-11 | 2023-06-06 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
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| JP2000019056A (en) * | 1998-07-03 | 2000-01-21 | Mitsubishi Heavy Ind Ltd | Wind tunnel testing device |
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| CN202994427U (en) * | 2012-11-27 | 2013-06-12 | 沈阳航空航天大学 | Environment-friendly no-refrigeration icing wind tunnel |
| US20130239670A1 (en) * | 2012-03-13 | 2013-09-19 | The Boeing Company | Supercooled Large Drop Icing Condition Simulation System |
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| DE3007950A1 (en) * | 1980-03-01 | 1981-09-10 | Brown Boveri - York Kälte- und Klimatechnik GmbH, 6800 Mannheim | Wind tunnel with low power air conditioner - operating in branch channel with slower flow than main feed, and enabling heating, cooling, humidifying and drying functions |
| JP2000019056A (en) * | 1998-07-03 | 2000-01-21 | Mitsubishi Heavy Ind Ltd | Wind tunnel testing device |
| CN102582843A (en) * | 2011-11-11 | 2012-07-18 | 中国商用飞机有限责任公司 | Ground icing condition simulation system |
| US20130239670A1 (en) * | 2012-03-13 | 2013-09-19 | The Boeing Company | Supercooled Large Drop Icing Condition Simulation System |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112432279A (en) * | 2021-01-27 | 2021-03-02 | 中国空气动力研究与发展中心低速空气动力研究所 | Isothermal isobaric humidification control system and control method for large icing wind tunnel body loop |
| CN112432279B (en) * | 2021-01-27 | 2021-04-06 | 中国空气动力研究与发展中心低速空气动力研究所 | Isothermal isobaric humidification control system and control method for large icing wind tunnel body loop |
| CN116213364A (en) * | 2023-05-11 | 2023-06-06 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | Automatic wet gas cleaning method and system for large low-temperature wind tunnel |
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| CN103776122B (en) | 2016-06-29 |
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