CN104787355B - Double cold storage circulating icing and anti-icing testing apparatus - Google Patents
Double cold storage circulating icing and anti-icing testing apparatus Download PDFInfo
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- CN104787355B CN104787355B CN201510133720.XA CN201510133720A CN104787355B CN 104787355 B CN104787355 B CN 104787355B CN 201510133720 A CN201510133720 A CN 201510133720A CN 104787355 B CN104787355 B CN 104787355B
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- freezer
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Abstract
The invention provides a double cold storage circulating icing and anti-icing testing apparatus which comprises a testing airflow cooling system, a testing chamber, a pressure balance pipe, a first airflow conveying pipe and a second airflow conveying pipe. The testing airflow cooling system comprises a first cold storage and a second cold storage, an outlet of the first cold storage is communicated with an inlet of the testing chamber through the first airflow conveying pipe, an outlet of the testing chamber is communicated with an inlet of the second cold storage through the second airflow conveying pipe, and an output of the second cold storage is communicated with an inlet of the first cold storage through the pressure balance pipe, so that a double cold storage closed circulating testing channel is formed. According to the double cold storage circulating icing and anti-icing testing apparatus, one cold storage is adopted to serve as the inlet, the stable section volume of the airflow inlet is increased, and the airflow quality of the airflow from the testing chamber is improved; the other cold storage is arranged on the outlet of the testing chamber, a collection device for supercooled water droplets of the airflow through the testing chamber can be effectively arranged in the space of the cold storage, and the continuous running time of the testing system is increased.
Description
Technical field
The present invention relates to the technical field of aerospace that aircraft and engine components freeze with anti-icing research, in particular it relates to one
Plant the icing using double freezer blood circulation and anti-icing experiment device.
Background technology
Aircraft and electromotor ice formation issues are the serious problems jeopardizing flight safety, and the aviation accident relevant with icing is annual
There is generation.Its windward side of fly past icing cloud is likely to occur icing phenomenon, such as windshield, wing, empennage, each
Plant flight sensor, parts of air intake system of electromotor etc..Aircraft icing can cause drop in lift, and resistance rises, handling
Decline；Engine aspirating system freezes, and can change the aerodynamic characteristics of gas handling system, increases flow resistance, makes inlet flow field
, there is flow distortion when light in skewness, thus affecting the job stability of electromotor, when serious, it may lead to flame-out stopping
Car；Flight sensor icing can cause faulty sensor etc..If engine aspirating system freezes, anti-icing system unlatching is delayed,
Also can cause to melt the ice cube coming off and be sucked by electromotor, produce the serious problems of engine foreign object damage.According to American National
Transportation safety committee ntsb counts between 1998-2007, and the aviation accident being caused due to icing reaches 264, wherein draws
Play major accident 94, dead 202 people.The research of aircraft and electromotor icing and anti-ice problem is related to aviation safety problem,
Therefore in aviation developed country, it is studied and pay much attention to.Freeze for aircraft and electromotor and anti-icing research includes theoretical point
Analysis, numerical simulation and experimentation.Affected by very many factors due to freezing, such as the content of cloud layer aqueous water, super-cooling waterdrop
Temperature, the surface characteristic of the size of super-cooling waterdrop, flight speed and attitude, engine charge modular construction form and material
Freeze in, aircraft and engine aspirating system and mechanism of anti-icing research is still an extremely complex problem, therefore experimentation
Remain the topmost research meanses that aircraft and electromotor freeze with anti-icing research.
Experimentation aircraft and electromotor freeze and anti-ice problem, it is desirable to provide can simulate the ring containing super-cooling waterdrop cloud layer
Border condition, including the size etc. of the content of cloud layer subcooled water, the temperature of super-cooling waterdrop and super-cooling waterdrop.Generally adopt ice both at home and abroad
Wind-tunnel usually can simulate the environmental condition of icing cloud to provide.But build that icing tunnel expense is very high and the construction period
Greatly, the maintenance cost of later stage icing tunnel is higher, and icing tunnel once builds up, and its experimental cabin size is substantially stationary, reforming test
Cabin parameter and physical dimension are extremely difficult.
Content of the invention
Freeze for current aircraft and engine components and anti-icing experiment equipment construction costly, cycle length, maintenance cost
High the problems such as, it is an object of the invention to provide a kind of economical and practical icing using double freezer blood circulation is filled with anti-icing experiment
Put.
The icing being formed using double freezer blood circulation being provided according to the present invention and anti-icing experiment device, can be winged
Machine, engine charge part and other field need to be frozen and the product of anti-icing design provides a kind of development experimental study
Economic and practical assay device.
The icing of double freezer circulations and anti-icing experiment device that the present invention provides, including test air-flow cooling system, test
Cabin, pressure-equalizing pipe, the first air delivery tube and the second air delivery tube；
Wherein, described test air-flow cooling system includes the first freezer and the second freezer；The delivery outlet of described first freezer
Pass sequentially through the entrance that described first air delivery tube connects described experimental cabin；Described second gas is passed through in the outlet of described experimental cabin
Stream delivery pipe connects the input port of described second freezer；The delivery outlet of described second freezer passes through described pressure-equalizing pipe and connects institute
State the input port of the first freezer, thus constituting the pilot passageway of a pair of freezer closed circulation；
Described first freezer is used for reducing air themperature, provides the low-temperature airflow meeting test requirements document；Described second freezer
For reducing through the heated air-flow of experimental cabin.
Preferably, described first air delivery tube includes collapsible tube, fan installing pipe, the first fan flow-guiding pipe and spraying system
System；
Described collapsible tube is in funnel-form；The heavy caliber end of described collapsible tube connects the outfan of described first freezer；Described
The small-caliber end of collapsible tube passes sequentially through described fan installing pipe, the first fan flow-guiding pipe connects described examination with described spraying system
The entrance of hatch checking；
It is provided with fan, described first freezer is exported by described fan by described collapsible tube in described fan installing pipe
Cold air is blown into described spraying system, and then inputs described experimental cabin；
Described spraying system is used for for cold air simulating the super-cooling waterdrop producing in cloud, forms the subcooled water meeting test requirements document
Drip grain size and size distribution profile.
Preferably, described second air delivery tube includes the second fan flow-guiding pipe, expansion pipe and subcooled water collection screen；
Wherein, one end of described second fan flow-guiding pipe connects the outlet of described experimental cabin；Described second fan flow-guiding pipe
The other end connection described expansion pipe small-caliber end；Described subcooled water collection screen connection is passed through at the heavy caliber end of described expansion pipe
The input port of described second freezer；
Described subcooled water collection screen is used for contained super-cooling waterdrop in air-flow after collection is tested, and prevents the mistake of experimental cabin output
Cold water drops in the second freezer and subsequent pipeline and freezes.
Preferably, described pressure-equalizing pipe includes multistage end to end pressure balance pipeline section successively；Adjacent pressure is put down
It is provided with round corner section between weighing apparatus pipeline section；
It is provided with flow deflector in described round corner section；Described flow deflector is used for the flowing of air-flow is risen and is guided to reduce gas
Flow losses during circulation is curved.
Preferably, also include balancing segment support；Described pressure-equalizing pipe is arranged on described balancing segment support.
Preferably, the both sides of described experimental cabin are provided with windowpane.
Preferably, described first freezer and the second freezer all include the freezer of several series connection.
Preferably, described first freezer, described collapsible tube, described fan installing pipe, the first fan flow-guiding pipe, described spraying
System, described experimental cabin, described second fan flow-guiding pipe, described expansion pipe, described subcooled water collection screen, described second freezer with
And for being detachably connected between described pressure-equalizing pipe.
Preferably, also include auxiliary reflux fan；It is provided with described auxiliary reflux fan in described pressure-equalizing pipe.
Compared with prior art, the present invention has a following beneficial effect:
1st, the present invention freezes and anti-icing experimental enviroment by freezer direct construction, and freezer specification can be according to test requirements document
Ripe product is chosen, the construction period is short, and construction cost is low, easily test institute can be realized by freezer series connection simultaneously
Chilling requirement changes, thus changing condition needed for test；
2nd, import of the present invention adopts a freezer, increased airflow inlet stable section volume, improves experimental cabin to flow
Flow quality；Experimental cabin exports Refrigerating House Design, can effectively arrange the receipts of super-cooling waterdrop in air-flow after experimental cabin in its space
Acquisition means, considerably increase the continuous operating time of pilot system；
3rd, in the present invention, experimental cabin is located at open space, is conducive to carrying out in electromotor the rotation icing of testpieces and anti-icing
Experimental study；Between two freezers, pipeline can require easy disassembly and replacing for different tests, and renewal cost is relatively low.
Brief description
The detailed description with reference to the following drawings, non-limiting example made by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon:
Fig. 1 is a kind of structural representation of the present invention；
Fig. 2 is another kind of structural representation of the present invention.
In figure:
1 is experimental cabin；
2 is spraying system；
3 is windowpane；
4 is the first fan flow-guiding pipe；
5 is fan installing pipe；
6 is collapsible tube；
7 is the first freezer；
8 is the second fan flow-guiding pipe
9 is expansion pipe
10 is subcooled water collection screen；
11 is the second freezer；
12 is first pressure balance pipe；
13 auxiliary reflux fan duct；
14 is second pressure balance pipe；
15 is balancing segment support；
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformation can also be made and improve.These broadly fall into the present invention
Protection domain.
In the present embodiment, the present invention provides the icing of double freezer circulations and anti-icing experiment device, including test air-flow
Cooling system, experimental cabin 1, first pressure balance pipe 12, auxiliary reflux fan duct 13, second pressure balance pipe 14, the first air-flow
Delivery pipe and the second air delivery tube；Wherein, described test air-flow cooling system includes the first freezer 7 and the second freezer 11；Institute
The delivery outlet stating the first freezer 7 passes sequentially through the entrance that described first air delivery tube connects described experimental cabin 1；Described experimental cabin
1 outlet connects the input port of described second freezer 11 by described second air delivery tube；The output of described second freezer 11
Mouth connects described first freezer by described first pressure balance pipe 12, auxiliary reflux fan duct 13 with second pressure balance pipe 14
7 input port, thus constitute the pilot passageway of a pair of freezer closed circulation；Before described first freezer 7 is located at the entrance of experimental cabin 1
End, for reducing air themperature, provides the low-temperature airflow meeting test requirements document；Second freezer 11 is used in experimental cabin 1 port of export
Low-temperature airflow after efficient recovery test the super-cooling waterdrop included in air-flow after collecting test, are that air-flow puts into test again
Prepare.Described first pressure balance pipe 12, auxiliary return fan duct 13 join end to end successively with second pressure balance pipe 14, shape
Become the pressure-equalizing passageway of a connection.The both sides of described experimental cabin 1 are provided with windowpane 3.Described first freezer 7 and second is cold
Storehouse 11 all includes the freezer of several series connection.Experimental cabin 1 is used for installation test part, the icing ice type of test component and anti-icing property
Energy.First pressure balance pipe 12, auxiliary reflux fan duct 13, second pressure balance pipe 14 are used for setting up the first freezer 7 and second
Pressure balance relation between freezer 11, the second freezer 11 cold air is back to the first freezer 7 it is ensured that permissible between two freezers
There is provided and freeze and anti-icing required continuous flow condition.
The icing of double freezer circulations that the present invention provides also includes auxiliary reflux fan with anti-icing experiment device；Described auxiliary
It is provided with described auxiliary reflux fan in backflow fan duct 13, forms the pressure-equalizing passageway of a drive, improve first cold
Storehouse 7 and the stability of the second freezer 11 gas stagnation pressure, improve the experimental performance of assay device.
Described first air delivery tube includes collapsible tube 6, fan installing pipe 5, the first fan flow-guiding pipe 4 and spraying system 2；
Described collapsible tube 6 is in funnel-form；The heavy caliber end of described collapsible tube 6 connects the outfan of described first freezer 7；Described collapsible tube
6 small-caliber end passes sequentially through described fan installing pipe 5, the first fan flow-guiding pipe connects described test with described spraying system 2
The entrance in cabin 1；It is provided with fan, described first freezer 7 is passed through described collapsible tube 6 by described fan in described fan installing pipe 5
The cold air of output is blown into described spraying system 2, and then inputs described experimental cabin 1；Described spraying system 2 is used for for cold air simulating product
Super-cooling waterdrop in raw cloud, forms super-cooling waterdrop grain size and the size distribution profile meeting test requirements document.Fan is used for carrying
For the power of air current flow, for forming the required air velocity parameter of test in experimental cabin 1.Contraction section 6 is used for accelerating gas
Stream, provides for experimental cabin 1 and meets the uniform air flow experimental condition requiring.
Described second air delivery tube includes the second fan flow-guiding pipe 8, expansion pipe 9 and subcooled water collection screen 10；Wherein, institute
The one end stating the second fan flow-guiding pipe 8 connects the outlet of described experimental cabin 1；The other end connection of described second fan flow-guiding pipe 8
The small-caliber end of described expansion pipe 9；The heavy caliber end of described expansion pipe 9 connects described second by described subcooled water collection screen 10
The input port of freezer 11；Described subcooled water collection screen 10 is used for contained super-cooling waterdrop in air-flow after collection is tested, and prevents from testing
The super-cooling waterdrop of cabin 1 output freezes in the second freezer 11 and subsequent pipeline, extends the long run test time of pilot system.Expansion
Pipe 9 is used for the speed of air-flow after reduction test, recovers stream pressure, reduces flow losses.Described first freezer 7, described contraction
Pipe 6, described fan installing pipe 5, described first fan flow-guiding pipe 4, described spraying system 2, described experimental cabin 1, described second wind
Fan mozzle 8, described expansion pipe 9, described subcooled water collection screen 10, described second freezer 11 and described first pressure balance pipe
12nd, it is to be detachably connected between auxiliary reflux fan duct 13, second pressure balance pipe 14.
The icing of double freezer circulations and anti-icing experiment device that the present invention provides, also include balancing segment support 15；Described auxiliary
Backflow fan duct 13 is helped to be arranged on described balancing segment support 15.
In the present embodiment, the icing of double freezer circulations that the present invention provides with the operation principle of anti-icing experiment device is:
In the experimental facilitiess of closed circulation, using a powerful fan as air flow source, the side being worked using two freezers simultaneously
Formula, a freezer provides, in arrival end, the low-temperature airflow meeting test requirements document, and a freezer is in experimental cabin port of export efficient recovery
Low-temperature airflow after test the super-cooling waterdrop included in air-flow after collecting test, are that air-flow puts into test again and prepares.
Employ subcooled water collection screen 10 in the freezer of experimental cabin 1 port of export, can prevent the super-cooling waterdrop after experimental cabin 1 from going out
Freeze in mouth freezer and subsequent pipeline, effectively extend the long run test time.Whole test method is simple, can be used for section
Learn research and education experiment.
The icing of double freezer circulations that the present invention provides is simple with the test method of anti-icing experiment device, low cost,
Construction period is short, and test efficiency is high；Employ the closed circulation mode of freezer air-flow, reduce the loss of cold air, improve cold
The utilization rate of amount；The mode employing double freezers is freezed, and improves refrigerating speed and refrigerating efficiency, shortens test and waits and standard
The standby time；Employ subcooled water collection screen, prevent the super-cooling waterdrop after experimental cabin from freezing in outlet freezer and subsequent pipeline,
Extend the long run test time of pilot system.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (7)
1. the icing of a kind of pair of freezer circulation and anti-icing experiment device are it is characterised in that include test air-flow cooling system, test
Cabin, pressure-equalizing pipe, the first air delivery tube and the second air delivery tube；
Wherein, described test air-flow cooling system includes the first freezer and the second freezer；The delivery outlet of described first freezer is successively
Connect the entrance of described experimental cabin by described first air delivery tube；It is defeated that described second air-flow is passed through in the outlet of described experimental cabin
Pipe is sent to connect the input port of described second freezer；The delivery outlet of described second freezer passes through described pressure-equalizing pipe connection described the
The input port of one freezer, thus constitute the pilot passageway of a pair of freezer closed circulation；
Described first freezer is used for reducing air themperature, provides the low-temperature airflow meeting test requirements document；Described second freezer is used for
Reduce through the heated air-flow of experimental cabin；
Described first air delivery tube includes collapsible tube, fan installing pipe, the first fan flow-guiding pipe and spraying system；
Described collapsible tube is in funnel-form；The heavy caliber end of described collapsible tube connects the outfan of described first freezer；Described contraction
The small-caliber end of pipe passes sequentially through described fan installing pipe, the first fan flow-guiding pipe connects described experimental cabin with described spraying system
Entrance；
It is provided with fan, the cold air that described first freezer is exported by described fan by described collapsible tube in described fan installing pipe
It is blown into described spraying system, and then input described experimental cabin；
Described spraying system is used for for cold air simulating the super-cooling waterdrop producing in cloud, forms the super-cooling waterdrop grain meeting test requirements document
Footpath size and size distribution profile；
Described second air delivery tube includes the second fan flow-guiding pipe, expansion pipe and subcooled water collection screen；
Wherein, one end of described second fan flow-guiding pipe connects the outlet of described experimental cabin；Described second fan flow-guiding pipe another
The small-caliber end of one end connection described expansion pipe；It is described that described subcooled water collection screen connection is passed through at the heavy caliber end of described expansion pipe
The input port of the second freezer；
Described subcooled water collection screen is used for contained super-cooling waterdrop in air-flow after collection is tested, and prevents the subcooled water of experimental cabin output
Drop in the second freezer and subsequent pipeline and freeze.
2. the icing of according to claim 1 pair of freezer circulation and anti-icing experiment device are it is characterised in that described pressure is put down
Weighing apparatus pipe includes multistage end to end pressure balance pipeline section successively；It is provided with round corner section between adjacent pressure balance pipeline section.
3. the icing of according to claim 1 pair of freezer circulation and anti-icing experiment device are it is characterised in that also include balancing
Section support；Described pressure-equalizing pipe is arranged on described balancing segment support.
4. the icing of according to claim 1 pair of freezer circulation with anti-icing experiment device it is characterised in that described experimental cabin
Both sides be provided with windowpane.
5. the icing of according to claim 1 pair of freezer circulation with anti-icing experiment device it is characterised in that described first is cold
Storehouse and the second freezer all include the freezer of several series connection.
6. the icing of according to claim 1 pair of freezer circulation with anti-icing experiment device it is characterised in that described first is cold
Storehouse, described collapsible tube, described fan installing pipe, described first fan flow-guiding pipe, described spraying system, described experimental cabin, described
Between second fan flow-guiding pipe, described expansion pipe, described subcooled water collection screen, described second freezer and described pressure-equalizing pipe
For being detachably connected.
7. the icing of according to claim 1 pair of freezer circulation and anti-icing experiment device are it is characterised in that also include assisting
Backflow fan；It is provided with described auxiliary reflux fan in described pressure-equalizing pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510133720.XA CN104787355B (en) | 2015-03-25 | 2015-03-25 | Double cold storage circulating icing and anti-icing testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510133720.XA CN104787355B (en) | 2015-03-25 | 2015-03-25 | Double cold storage circulating icing and anti-icing testing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104787355A CN104787355A (en) | 2015-07-22 |
| CN104787355B true CN104787355B (en) | 2017-01-18 |
Family
ID=53552637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510133720.XA Expired - Fee Related CN104787355B (en) | 2015-03-25 | 2015-03-25 | Double cold storage circulating icing and anti-icing testing apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN104787355B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8650944B2 (en) * | 2012-03-13 | 2014-02-18 | The Boeing Company | Supercooled large drop icing condition simulation system |
| CN202581922U (en) * | 2012-04-27 | 2012-12-05 | 青岛奥利凯中央空调有限公司 | Dual-cold-source refrigerating device |
| CN203643124U (en) * | 2013-12-06 | 2014-06-11 | 武汉航空仪表有限责任公司 | Supercooling large water drop simulation device |
| CN203858089U (en) * | 2014-04-02 | 2014-10-01 | 康福斯（苏州）航空工业有限公司 | Aircraft anti-icing system testing device |
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2015
- 2015-03-25 CN CN201510133720.XA patent/CN104787355B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN104787355A (en) | 2015-07-22 |
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