CN109186925A - Wind-tunnel and wind tunnel test system - Google Patents
Wind-tunnel and wind tunnel test system Download PDFInfo
- Publication number
- CN109186925A CN109186925A CN201810947665.1A CN201810947665A CN109186925A CN 109186925 A CN109186925 A CN 109186925A CN 201810947665 A CN201810947665 A CN 201810947665A CN 109186925 A CN109186925 A CN 109186925A
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- wind
- tunnel
- power section
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- radome fairing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention discloses a kind of wind-tunnel, including sequentially connected entrance, power section, changeover portion, etc. straight sections and contraction section, four single blower power sections in the column arrangement of two rows two are provided in the power section, the list blower power section is disposed with gas collecting segment, the first radome fairing, motor, the second radome fairing and third radome fairing along airintake direction；The gas collecting segment is in the shape of a trumpet and is set at the air inlet of single blower power section, first radome fairing is connect with the inner wall of single blower power section by support chip, blade is connected on the output shaft of the motor, second radome fairing is connect with the inner wall of single blower power section by spin-ended.The present invention provides wind-tunnel and wind tunnel test system is not limited by season, area and time, and the test period is short and at low cost, and climatic environment condition can accurately control, and can carry out multiplicating test, and test result is reliable.
Description
Technical field
The invention belongs to fluid mechanics technologies, and in particular to a kind of wind-tunnel and wind tunnel test system.
Background technique
It is required in the prior art to frontal windshield area except the function and performance of sleet equipment will carry out ground experiment verifying.
Currently, the ground experiment method of frontal windshield Wiper system has following two: rain wind-tunnel can simulate more actually natural climate
Environment, but due to the limitation of tunnel size and ancillary equipment, the windscreen wiper test of component-level can only be carried out, so that windscreen wiper
Workbench lack authenticity；Using outfield salt fog test, the extreme climate environment that it's raining and blowing hard is by season, area and time
Limitation, so that the test period is long, cost increases.
Thus, it is desirable to have a kind of technical solution overcomes or at least mitigates at least one above problem of the prior art.
Summary of the invention
The purpose of the present invention is to provide a kind of wind-tunnel and wind tunnel test system to overcome or at least mitigate in the prior art
At least one above problem.
To achieve the above object, the present invention provides a kind of wind-tunnel, including sequentially connected entrance, power section, transition
Section, etc. straight sections and contraction section, four single blower power sections in the column arrangement of two rows two, the list are provided in the power section
Blower power section is disposed with gas collecting segment, the first radome fairing, motor, the second radome fairing and third radome fairing along airintake direction；
The gas collecting segment is in the shape of a trumpet and is set at the air inlet of single blower power section, first radome fairing and the list
The inner wall of blower power section is connected by support chip, is connected with blade on the output shaft of the motor, second radome fairing with
The inner wall of the list blower power section passes through spin-ended connection.
Preferably, the changeover portion includes four single blower changeover portions in the column arrangement of two rows two, the list blower transition
Section is connect with single blower power section.
Preferably, protective net is provided in the entrance.
Preferably, be disposed with damping screen and honeycomb in the equal straight sections, the damping screen and the honeycomb it
Between distance be 400mm.
Preferably, the honeycomb is positive hexagonal honeycomb structure.
Preferably, the shrinkage ratio of the contraction section determines as the following formula:
Wherein, D is height or width, D1For the height or width of entrance, D2For the height or width of outlet, X is length side
To coordinate, L be shrink segment length,For the tie point of rear and front end.
Preferably, the wind-tunnel further includes hydraulicefficiency elevation structure and fixed mechanism, the hydraulicefficiency elevation structure and the wind
Hole connection, the fixed mechanism are connect with the hydraulicefficiency elevation structure, are used for the hydraulicefficiency elevation structure and the wind-tunnel
It is fixed on ground.
Preferably, rubber pad is provided between the fixed mechanism and the ground.
On the other hand, the present invention also provides a kind of wind tunnel test systems, including above-mentioned wind-tunnel.
Preferably, further include host computer, programmable controller, frequency converter, air velocity transducer and power supply unit, it is described on
Position machine is connect with the programmable controller, for sending control instruction to the programmable controller；The PLC technology
Device is connect with the frequency converter, for sending control instruction to the frequency converter；The frequency converter is connect with the motor, is used for
Corresponding voltage and frequency are inputted to the motor according to the control instruction；The air velocity transducer and the PLC technology
Device connection, and is set at the air outlet of the wind-tunnel, for measuring the wind speed of the wind-tunnel air outlet and by feedback signal
Pass to the programmable controller；The power supply unit is used for as the open wind tunnel test system power supply.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, by wind-tunnel overall structure,
The optimization design of aerodynamic profile and frequency conversion speed-adjusting system is realized in favorable sealing property and the controllable laboratory of temperature and humidity
It takes off and the real simulation for air-flow environment when meeting with strong sleet of landing.Compared with the natural climate environmental test of outfield, examination
It tests and is not limited by season, area and time, the test period is short and at low cost, and climatic environment condition can accurately control, can be into
Test is repeated several times in row, and test result is reliable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of wind-tunnel provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of single blower power section provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of internal structure of wind-tunnel provided in an embodiment of the present invention；
Fig. 4 be another embodiment of the present invention provides wind-tunnel structural schematic diagram；
Fig. 5 is the structural schematic diagram of wind tunnel test system provided in an embodiment of the present invention.
Wherein:
10, entrance；11, protective net；20, power section；21, single blower power section；22, gas collecting segment；23, the first rectification
Cover；24, motor；25, the second radome fairing；26, third radome fairing；27, support chip；28, blade；29, spin-ended；30, changeover portion；
31, single blower changeover portion；40, the straight sections such as；41, damping screen；42, honeycomb；50, contraction section；60, hydraulicefficiency elevation structure；70, solid
Determine structure；81, host computer；82, programmable controller；83, frequency converter；84, air velocity transducer；85, power supply unit.
Specific embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining technical principle of the invention, it is not intended that limit the scope of the invention.
It should be noted that in the description of the present invention, term " center ", "upper", "lower", "left", "right", "vertical",
The direction of the instructions such as "horizontal", "inner", "outside" or the term of positional relationship are direction based on the figure or positional relationship, this
It is intended merely to facilitate description, rather than indication or suggestion described device or element must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " third " are only used
In description purpose, it is not understood to indicate or imply relative importance.
In addition it is also necessary to explanation, in the description of the present invention unless specifically defined or limited otherwise, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the present invention.
In order to better understand the present invention, below in conjunction with attached drawing, the wind provided according to embodiments of the present invention is described in detail
Hole and wind tunnel test system, it should be noted that these embodiments are not for limiting the scope of the present disclosure.
Referring to figure 1, figure 2 and figure 3, wind-tunnel include sequentially connected entrance 10, power section 20, changeover portion 30, etc. straight sections
40 and contraction section 50.
Four single blower power sections 21 in the column arrangement of two rows two, the cross of single blower power section 21 are provided in power section 20
Section is circle, and waiting the cross section of straight sections 40 is rectangle, by the circular section of single blower power section 21 and is waited straight by changeover portion 30
The rectangular section of section 40 connects, and realizes the conversion of cross sectional shape, and complete the boundling of air-flow.
It is whole that single blower power section 21 along airintake direction is disposed with gas collecting segment 22, the first radome fairing 23, motor 24, second
Stream cover 25 and third radome fairing 26.
Gas collecting segment 22 is in bell shape and is set at the air inlet of single blower power section 21, the bell shape internal diameter
It meets to air-flow direction of flow biggish one end.
First radome fairing 23 is connect with the inner wall of single blower power section 21 by multiple support chips 27.
Multiple blades 28 are connected on the output shaft of motor 24.
Second radome fairing 25 is connect with the inside of single blower power section 21 by multiple spin-ended 29.
Changeover portion 30 includes four single blower changeover portions 31 in the column arrangement of two rows two, single blower changeover portion 31 and single blower
Power section 21 connects, and realizes that air-flow is flowed into single blower changeover portion 31 from single blower power section 21, and be flowed into and be arranged in transition
In the equal straight sections 40 of 30 sides of section, to realize the conversion of cross sectional shape and the boundling of air-flow.
Enter in wind-tunnel to avoid air-flow from carrying particulate matter, causes support chip 27 and/or blade 28 and/or spin-ended 29
Damage, in entrance 10 be arranged protective net 11, so as to effectively stop the particulate matter carried in air-flow to enter wind
In hole.
Damping screen 41 and honeycomb 42 are disposed in equal straight sections 40, wherein damping screen 41 and honeycomb 42 lead to respectively
It crosses bolt to be fixedly connected on the inner wall for waiting straight sections 40, optionally, sets gradually honeycomb in equal straight sections 40 along airflow direction
42 and damping screen 41, and the distance between damping screen 41 and honeycomb 42 are set as 400mm.Damping screen 41 can effectively drop
The turbulivity of low-flow, honeycomb 42 are chosen as regular hexagon honeycomb, for leading straight air-flow.
Contraction section 50 can play acceleration to air-flow, meanwhile, it also can reduce the vertical and horizontal turbulivity of air-flow.
The shrinkage ratio of contraction section 50 can be determined by following formula:
Wherein, D is local height or width, D1For the height or width of entrance, D2For the height or width of outlet, X is
The coordinate of length direction, L are to shrink segment length,For the tie point of rear and front end.
Optionally, the shrinkage ratio of contraction section 50 chooses 4.
According to an embodiment of the present invention, referring to fig. 4, wind-tunnel further includes hydraulicefficiency elevation structure 60 and fixed mechanism 70, liquid
Pressure elevating mechanism 60 is connect with wind-tunnel, and fixed structure is connect with hydraulicefficiency elevation structure 60, be used for hydraulicefficiency elevation structure 60 and
Wind-tunnel fixes on the ground.
Further, the opposite sliding between fixed structure 70 and ground in order to prevent, fixed mechanism 70 and ground it
Between be provided with anti-skid rubber cushion.
The hydraulic arm of an optional embodiment according to the present invention, hydraulicefficiency elevation structure 60 can be with power section 20 and equal straight sections
40 connections.
On the other hand, the present invention also provides a kind of wind tunnel test systems, and referring to Fig. 5, which includes upper
Machine 81, programmable controller 82, frequency converter 83, air velocity transducer 84, power supply unit 85 and above-mentioned wind-tunnel.
Host computer 81 is connect with programmable controller 82, for sending control instruction to programmable controller 82.
Programmable controller 82 is connect with frequency converter 83, for sending control instruction to frequency converter 83.
Frequency converter 83 is connect with motor 24, for inputting corresponding voltage and frequency to motor 24 according to control instruction.
Air velocity transducer 84 is connect with programmable controller 82, and is set at the air outlet of wind-tunnel, for measuring wind
Feedback signal is simultaneously passed to programmable controller 82 by the wind speed of hole air outlet.
Power supply unit 85 is used to power for open wind tunnel test system.
Wind tunnel test system provided in this embodiment can guarantee the automatic continuous adjustable of flow field wind speed, control method:
The power supply unit 85 for being located at test chamber interior walls will power reasonable distribution to frequency converter 83, and host computer 81 is sent out to programmable controller 82
Instruction is sent, programmable controller 82 sends to frequency converter 83 and instructs, and frequency converter 83 inputs corresponding electricity to motor 24 according to instruction
Signal is fed back to frequency converter 83 by pressure and frequency, encoder on motor 24, frequency converter 83 further according to encoder feedback signal into
Row input adjustment, wind velocity signal is transmitted to programmable controller 82 by anemobiagraph by the air velocity transducer 84 in wind-tunnel exit, real
The automatic continuous control of existing 24 revolving speed of motor.
For example, first installing all devices in laboratory's planning region, then when carrying out aircraft climate environmental test
The test wind V is inputted in host computer 81, host computer 81 connects programmable controller 82 by Ethernet, to control frequency converter 83
Motor 24 is driven to run, signal is fed back to frequency converter 83 to calibration command frequency, wind speed sensing by the encoder on motor 24
The wind speed of wind-tunnel air outlet is transmitted to host computer 81 to calibrate actual wind speed by anemobiagraph and programmable controller 82 by device 84,
The multiple parameters that host computer 81 monitors that motor 24 is run simultaneously realize entire wind tunnel test system to ensure the Linear Control of frequency
The automatic continuous control of system wind speed.
Finally it is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes；And these are modified or replaceed, the essence for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Mind and range.
Claims (10)
1. a kind of wind-tunnel, including sequentially connected entrance (10), power section (20), changeover portion (30), etc. straight sections (40) and
Contraction section (50), which is characterized in that
Four single blower power sections (21) in the column arrangement of two rows two, the list blower power are provided in the power section (20)
Section (21) along airintake direction be disposed with gas collecting segment (22), the first radome fairing (23), motor (24), the second radome fairing (25) and
Third radome fairing (26)；
The gas collecting segment (22) is in the shape of a trumpet and is set at the air inlet of single blower power section (21), and described first is whole
Stream cover (23) is connect with the inner wall of single blower power section (21) by support chip (27), on the output shaft of the motor (24)
It is connected with blade (28), the inner wall of second radome fairing (25) and single blower power section (21) is connected by spin-ended (29)
It connects.
2. wind-tunnel according to claim 1, which is characterized in that the changeover portion (30) includes four in the column arrangement of two rows two
A list blower changeover portion (31), the list blower changeover portion (31) connect with single blower power section (21).
3. wind-tunnel according to claim 1, which is characterized in that be provided with protective net (11) in the entrance (10).
4. wind-tunnel according to claim 1, which is characterized in that be disposed with damping screen (41) in equal straight sections (40)
With honeycomb (42), the distance between the damping screen (41) and the honeycomb (42) are 400mm.
5. wind-tunnel according to claim 4, which is characterized in that the honeycomb (42) is positive hexagonal honeycomb structure.
6. wind-tunnel according to claim 1, which is characterized in that the shrinkage ratio of the contraction section (50) determines as the following formula:
Wherein, D is height or width, D1For the height or width of entrance, D2For the height or width of outlet, X is length direction
Coordinate, L are to shrink segment length,For the tie point of rear and front end.
7. wind-tunnel according to any one of claim 1 to 6, which is characterized in that the wind-tunnel further includes hydraulic elevator
Structure (60) and fixed mechanism (70), the hydraulicefficiency elevation structure (60) connect with the wind-tunnel, the fixed mechanism (70) and institute
Hydraulicefficiency elevation structure (60) connection is stated, for the hydraulicefficiency elevation structure (60) and the wind-tunnel to be fixed on ground.
8. wind-tunnel according to claim 7, which is characterized in that be provided between the fixed mechanism (70) and the ground
Rubber pad.
9. a kind of wind tunnel test system, which is characterized in that including wind-tunnel described in any item of the claim 1 to 8.
10. wind tunnel test system according to claim 9, which is characterized in that further include host computer (81), PLC technology
Device (82), frequency converter (83), air velocity transducer (84) and power supply unit (85),
The host computer (81) connect with the programmable controller (82), controls for sending to the programmable controller (82)
System instruction；
The programmable controller (82) connect with the frequency converter (83), refers to for sending control to the frequency converter (83)
It enables；
The frequency converter (83) connect with the motor (24), for inputting phase to the motor (24) according to the control instruction
The voltage and frequency answered；
The air velocity transducer (84) connect with the programmable controller (82), and is set to the air outlet of the wind-tunnel
Place, for measuring the wind speed of the wind-tunnel air outlet and feedback signal being passed to the programmable controller (82)；
The power supply unit (85) is used for as the open wind tunnel test system power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947665.1A CN109186925A (en) | 2018-08-20 | 2018-08-20 | Wind-tunnel and wind tunnel test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810947665.1A CN109186925A (en) | 2018-08-20 | 2018-08-20 | Wind-tunnel and wind tunnel test system |
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| Publication Number | Publication Date |
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| CN109186925A true CN109186925A (en) | 2019-01-11 |
Family
ID=64918921
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| CN201810947665.1A Pending CN109186925A (en) | 2018-08-20 | 2018-08-20 | Wind-tunnel and wind tunnel test system |
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Cited By (6)
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| CN110082060A (en) * | 2019-05-24 | 2019-08-02 | 农业农村部南京农业机械化研究所 | A kind of plant protection unmanned aerial vehicle wind resistance test equipment and method |
| CN113252293A (en) * | 2021-06-08 | 2021-08-13 | 中国空气动力研究与发展中心低速空气动力研究所 | Gas rectification structure inside box body |
| CN113903243A (en) * | 2021-11-18 | 2022-01-07 | 上汽通用汽车有限公司 | Pneumatic resistance piece and scaling automobile model |
| CN113916490A (en) * | 2021-12-13 | 2022-01-11 | 中国飞机强度研究所 | Device for improving airflow uniformity of wind tunnel in airplane experiment and parameter optimization method thereof |
| CN114160214A (en) * | 2021-11-10 | 2022-03-11 | 中国空气动力研究与发展中心空天技术研究所 | Unmanned aerial vehicle extreme environment simulation laboratory |
| CN116296222A (en) * | 2023-01-09 | 2023-06-23 | 广州民航职业技术学院 | System, method, equipment and storage medium for simulating environment of airplane windshield |
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| CN113916490A (en) * | 2021-12-13 | 2022-01-11 | 中国飞机强度研究所 | Device for improving airflow uniformity of wind tunnel in airplane experiment and parameter optimization method thereof |
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Application publication date: 20190111 |