CN107036779B - Continuous high-speed wind tunnel experiment section rapid section changing device - Google Patents
Continuous high-speed wind tunnel experiment section rapid section changing device Download PDFInfo
- Publication number
- CN107036779B CN107036779B CN201710353447.0A CN201710353447A CN107036779B CN 107036779 B CN107036779 B CN 107036779B CN 201710353447 A CN201710353447 A CN 201710353447A CN 107036779 B CN107036779 B CN 107036779B
- Authority
- CN
- China
- Prior art keywords
- speed
- section
- wind tunnel
- experimental section
- motor
- 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.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The invention provides a continuous high-speed wind tunnel experimental section rapid section changing device which comprises 4 motors with the same power, 4 speed reducers with the same speed reduction ratio, 4 wheel shafts, an electric appliance control box and cables, wherein the 4 motors are connected with the speed reducers; the 4 motors and the 4 speed reducers are respectively matched with 4 wheels of the wind tunnel experiment section for installation, and the speed reducers are installed on wheel bases and are connected with the wheels through wheel shafts to realize the transmission of driving force; an electric motor and a speed reducer form a set of independent driving device, and the electric motor and the speed reducer are directly connected; the electric appliance control box is connected with 4 sets of independent driving devices through cables; the starting, stopping and rotating speed of the 4 sets of driving devices are independently controlled by the electric appliance control box. The invention effectively ensures the alignment precision of the wind tunnel experimental section, improves the working efficiency of replacing the wind tunnel experimental section, reduces the safety risk of personnel and equipment in the section replacing process, and provides technical support for quick replacement and accurate installation of multiple continuous high-speed wind tunnel experimental sections.
Description
Technical Field
The invention relates to the field of design of a moving and replacing device for a wind tunnel experiment section, in particular to a rapid section replacing device for a continuous high-speed wind tunnel experiment section.
Background
The wind tunnel is a pipeline-shaped experimental device which is used for generating and controlling airflow in a manual mode, simulating the flowing condition of air around an aircraft or an entity, measuring the effect of the airflow on the entity and observing physical phenomena, and is one of the most common and effective tools for aerodynamic experiments. Wind tunnels are widely used for researching the basic laws of aerodynamics to verify and develop relevant theories, directly serve for the development of various aircrafts, and determine the aerodynamic layout of the aircrafts and evaluate the aerodynamic performance of the aircrafts through wind tunnel experiments. Wind tunnel experiments are an indispensable component in aircraft development work. The method plays an important role in the research and development of aviation and aerospace engineering, and is indispensable in the fields of transportation, building construction, wind energy utilization and the like along with the development of industrial aerodynamics.
The continuous high-speed wind tunnel is an all-steel backflow type closed pipeline driven by a motor, and mainly comprises components such as an axial flow compressor, a cooler, a stabilizing section, an experimental section and a diffusion section, and is shown in figure 1. The experimental section is a core area of the wind tunnel and is used for installing an experimental model and providing a high-quality flow field environment, so that the measurement of the aerodynamic force of the model and the flow field observation are realized. For different blowing experimental models, in order to widen the application range of the wind tunnel and improve the utilization rate, one wind tunnel is usually provided with two or more experimental sections, such as a ternary experimental section for developing a full machine and a projectile body, a binary experimental section for specially carrying out airfoil type research, a propeller experimental section with power and the like. The power device and the hole body main part of many experimental sections wind-tunnels are shared, and the experimental section can be changed, through changing different experimental sections in order to realize different experimental purposes.
The front end of high-speed wind tunnel experiment section is connected in the wind tunnel stable section, and the rear end is connected in the wind tunnel diffuser, and the inner structure of different experiment sections is different, nevertheless has the same terminal surface interface, when changing the experiment section, will be with two terminal surfaces of experiment section and stable section and diffuser throw off, through its wheel and ground rail removal from the area, realize the separation of experiment section and wind tunnel main part. After the experiment section is separated from the wind tunnel main body, the experiment section to be replaced is moved into the corresponding part of the wind tunnel through the wheels and the rails, and finally the experiment section is replaced. The experimental section of high-speed wind tunnel is steel structure, and the total weight reaches tens tons, changes the experimental section and not only needs long distance horizontal drive, also needs short distance micro displacement control to realize the accurate butt joint of experimental section and wind tunnel main part. Therefore, in practical engineering application, the moving mode of the experimental section and the displacement control precision thereof are one of the difficulties faced by wind tunnel experimenters. At present, the experiment section is moved generally by adopting a steel rope traction mode, but due to factors such as the structural complexity of a dragging device and the like, the following problems mainly exist: the external dragging device has a complex structure and high use and maintenance cost; the steel cable is a flexible traction tool, so that the precise control of micro displacement is difficult to realize; time and labor are wasted, the working efficiency is low, and potential safety hazards exist. Therefore, it is necessary to develop a set of experimental section fast section changing device for a continuous high-speed wind tunnel to ensure the displacement control precision of the experimental section, improve the working efficiency and reduce the labor intensity of experimenters.
Disclosure of Invention
The invention provides a rapid experimental section replacing device suitable for a continuous high-speed wind tunnel, aiming at overcoming the inherent defects of a traction mode of a traditional steel cable type experimental section, improving the working efficiency of replacing the experimental section of the wind tunnel, solving the technical problem of precise control of displacement precision of the experimental section and realizing rapid replacement and precise installation of the experimental section of the wind tunnel.
The technical scheme of the invention is as follows:
the continuous high-speed wind tunnel experiment section rapid section changing device is characterized in that: the electric vehicle consists of 4 motors with the same power, 4 speed reducers with the same speed reduction ratio, 4 wheel shafts, an electric appliance control box and cables; the 4 motors and the 4 speed reducers are respectively matched with 4 wheels of the wind tunnel experiment section for installation, and the speed reducers are installed on wheel bases and are connected with the wheels through wheel shafts to realize the transmission of driving force;
an electric motor and a speed reducer form a set of independent driving device, and the electric motor and the speed reducer are directly connected; the electric appliance control box is connected with 4 sets of independent driving devices through cables; 4 sets of drive arrangement open stop and rotational speed pass through electrical apparatus control box independent control:
when the experimental section moves in a long distance, the 4 sets of driving devices work at the same speed and direction at the same time, so that the rapid movement of the experimental section is realized;
when the experimental section is close to the wheel reversing or wind tunnel interface position, the displacement of the 4 sets of driving devices is accurately controlled:
when accurate alignment is needed in the longitudinal direction, only two driving devices on the longitudinal rail on one side are powered, so that the interface of the experimental section swings left and right in the longitudinal direction, and accurate butt joint of the longitudinal position of the experimental section is realized;
when the experiment section is required to be accurately aligned in the transverse direction, only two driving devices on the transverse rail on the lagging side are powered, so that the experiment section interface generates front and back micro movement, and the accurate alignment of the transverse position of the experiment section is realized.
Further preferred scheme, the quick section changing device of continuous high-speed wind tunnel experiment section is characterized in that: and a frequency converter, a contactor, a relay and a motor overload, phase sequence and phase error protector are arranged in the electric appliance control box.
Further preferred scheme, the quick section changing device of continuous high-speed wind tunnel experiment section is characterized in that: the speed reducer adopts a multistage speed reduction bevel gear-bevel gear sleeved speed reducer; the motor is a variable-frequency speed-regulating motor.
Further preferred scheme, the quick section changing device of continuous high-speed wind tunnel experiment section is characterized in that: the driving speed of the movement of the experimental section is designed to be double speed, the high speed is 16.6cm/s, and the low speed is 1.66cm/s; the high speed is used for the rapid movement of the experimental section, and the low speed is used for the precise control; the high speed is the speed reached by the motor through the speed reduction of the speed reducer under the rated frequency, and the low speed is the speed reached by the motor through the speed reduction of the speed reducer after the frequency converter reduces the power supply frequency.
Advantageous effects
The invention effectively ensures the alignment precision of the wind tunnel experimental section, improves the working efficiency of replacing the wind tunnel experimental section, reduces the safety risk of personnel and equipment in the section replacing process, and provides technical support for quick replacement and accurate installation of multiple continuous high-speed wind tunnel experimental sections.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a continuous high-speed wind tunnel structure;
1-axial flow compressor, 2-cooler, 3-stable section, 4-experimental section and 5-diffusion section.
FIG. 2 is a front view of a continuous high-speed wind tunnel experiment section rapid section changing device;
6-experimental section, 7-motor, 8-electrical control box, 9-cable and 10-speed reducer.
FIG. 3 is a top view of a continuous high-speed wind tunnel experimental section rapid section changing device;
6-experimental section, 7-motor, 8-electrical appliance control box, 9-cable, 10-speed reducer, 11-wheel, 12-wheel shaft, 13-transverse track and 14-longitudinal track.
FIG. 4 is an assembly drawing of the drive unit and the experimental section wheel;
15-wheel base, 11-wheel, 12-wheel shaft, 7-motor and 10-speed reducer.
FIG. 5 is a fast segment-changing device for a binary experimental segment of an NF-6 high-speed wind tunnel;
6-experimental section, 7-motor, 8-electrical control box, 9-cable and 10-speed reducer.
FIG. 6 is a section fast changing device for a ternary experimental section of an NF-6 high-speed wind tunnel;
6-experimental section, 7-motor, 8-electrical control box, 9-cable and 10-speed reducer.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
The embodiment is used for a first continuous high-speed wind tunnel in China, namely an NF-6 supercharging continuous high-speed wind tunnel of northwest industrial university. The NF-6 high-speed wind tunnel is the backward flow formula overall arrangement, is driven by an axial compressor, is furnished with two experimental sections of binary wing section and ternary complete machine, in this embodiment, has installed two sets of the same quick section device of trading (as shown in fig. 5, fig. 6) respectively for binary experimental section and ternary experimental section, and the quick section device of trading of binary experimental section includes 4 motors, 4 speed reducers, 4 axletrees, electrical apparatus control box and cable group, wherein:
4 motors and 4 speed reducers are respectively matched with 4 wheels of the binary experiment section for installation, and the speed reducers are installed on wheel bases and are connected with the wheels through wheel shafts, so that the transmission of driving force is realized. The 4 speed reducers are the same in specification and model, and the reduction ratios are all 123. The motor and the reducer are directly connected to form a driving device of the experimental section rapid section changing device, the experimental section is driven to move after being electrified, as shown in fig. 4, the specifications and the models of the 4 motors are the same, and the power is 0.75kw. The speed reducer is a multistage speed reduction bevel gear sleeved speed reducer, and has the advantages of large reduction ratio, compact structure and low noise. The motor is a universal variable-frequency speed-regulating motor, and the motor is controlled by a frequency converter, and can set output rotating speed, speed increasing (decreasing) time and parking braking torque as required.
The electric appliance control box of the binary experimental section rapid section changing device is internally provided with an EM303-4R0G4kw three-way sine frequency converter, a CJX2-0901 low-voltage alternating current contactor, a relay, a motor overload, phase sequence, phase-dislocation protector and other components. The electric appliance control box supplies power to the driving device, and the operation or adjustment of the test section is set through the multifunctional rotary switch.
The ternary experimental section rapid section changing device is also composed of 4 motors, 4 speed reducers, 4 wheel shafts, an electrical appliance control box and a cable line group, and all parts and electrical appliances are the same as those of the binary experimental section rapid section changing device.
In the embodiment, the driving speeds of the experiment section moving of the binary experiment section fast segment changing device and the ternary experiment section fast segment changing device are designed to be double speed, the high speed is 16.6cm/s, and the low speed is 1.66cm/s. High speed is used for long distance movement and low speed is used for docking. The high speed is a speed at which the rotational speed of the motor at the rated frequency is reduced by the speed reducer, and the low speed is a speed at which the rotational speed of the motor after the frequency converter reduces the power supply frequency is reduced by the speed reducer.
In this embodiment, the interchange of the binary experiment section and the ternary experiment section requires the experiment section to complete the longitudinal and transverse movements, and when the experiment section moves longitudinally, the wheels are turned to be parallel to the longitudinal rail; when the experimental section moves transversely, the wheels are rotated to be parallel to the transverse rails. 4 sets of independent driving devices consisting of motors and speed reducers are arranged on 4 wheels of the wind tunnel experiment section, and the starting, the stopping and the rotating speed of the 4 sets of driving devices can be independently controlled. When the experiment section moves in a long distance, the 4 sets of driving devices work simultaneously at the same rotating speed and direction, and the quick movement of the experiment section is realized. When the experimental section approaches to the wheel reversing or wind tunnel interface position, the displacement of the experimental section needs to be accurately controlled. When the longitudinal accurate alignment is carried out, only two sets of driving devices on the longitudinal rail on one side are powered to move forward or backward, so that the accurate alignment of the longitudinal position of the experimental section is realized; when the horizontal accurate alignment is carried out, only two sets of driving devices on the horizontal rail on the lagging side are powered, and the interface of the experimental section moves slightly back and forth, so that the accurate butt joint of the horizontal position of the experimental section is realized. Through the independent accurate control of 4 sets of drive arrangement, will wait to change the experiment section and move to required position finally.
The operation test result shows that after the technical scheme of the invention is adopted, the displacement precision of the experimental section is further improved, and the accurate butt joint precision of the experimental section and the wind tunnel body is realized; the period changing time is shortened from original 8 hours to 3 hours, and the working efficiency of changing the experimental period is effectively improved; external devices such as a traction steel cable and the like are abandoned, the integrated design of the experimental section and the section changing device is realized, and the safety risk of experimental personnel and equipment is reduced.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make variations, modifications, substitutions and alterations within the scope of the present invention without departing from the spirit and scope of the present invention.
Claims (4)
1. The utility model provides a quick section device that trades of high-speed wind-tunnel experimental section of continuous type which characterized in that: the electric vehicle consists of 4 motors with the same power, 4 speed reducers with the same speed reduction ratio, 4 wheel shafts, an electric appliance control box and cables; the 4 motors and the 4 speed reducers are respectively matched with 4 wheels of the wind tunnel experiment section for installation, and the speed reducers are installed on wheel bases and are connected with the wheels through wheel shafts to realize the transmission of driving force;
an independent driving device is formed by a motor and a speed reducer, and the motor is directly connected with the speed reducer; the electric appliance control box is connected with 4 sets of independent driving devices through cables; 4 sets of drive arrangement open stop and rotational speed pass through electrical apparatus control box independent control:
when the experimental section moves in a long distance, the 4 sets of driving devices work simultaneously at the same rotating speed and direction to realize the rapid movement of the experimental section;
when the experimental section is close to the wheel reversing or wind tunnel interface position, the displacement of the 4 sets of driving devices is accurately controlled:
when accurate alignment is needed in the longitudinal direction, only two driving devices on the longitudinal rail on one side are powered, so that the interface of the experimental section swings left and right in the longitudinal direction, and accurate butt joint of the longitudinal position of the experimental section is realized;
when the experiment section is required to be accurately aligned in the transverse direction, only two driving devices on the transverse rail on the lagging side are powered, so that the experiment section interface generates front and back micro movement, and the accurate alignment of the transverse position of the experiment section is realized.
2. The continuous high-speed wind tunnel experiment segment rapid segment changing device according to claim 1, characterized in that: and a frequency converter, a contactor, a relay and a motor overload, phase sequence and phase error protector are arranged in the electric appliance control box.
3. The continuous high-speed wind tunnel experiment section rapid section changing device according to claim 1 or 2, characterized in that: the speed reducer adopts a multistage speed reduction bevel gear-bevel gear sleeved speed reducer; the motor is a variable-frequency speed-regulating motor.
4. The continuous high-speed wind tunnel experiment segment rapid segment changing device according to claim 2, characterized in that: the driving speed of the movement of the experimental section is designed to be double speed, the high speed is 16.6cm/s, and the low speed is 1.66cm/s; the high speed is used for the rapid movement of the experimental section, and the low speed is used for the precise control; the high speed is the speed reached by the motor through the speed reduction of the speed reducer under the rated frequency, and the low speed is the speed reached by the motor through the speed reduction of the speed reducer after the frequency converter reduces the power supply frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710353447.0A CN107036779B (en) | 2017-05-18 | 2017-05-18 | Continuous high-speed wind tunnel experiment section rapid section changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710353447.0A CN107036779B (en) | 2017-05-18 | 2017-05-18 | Continuous high-speed wind tunnel experiment section rapid section changing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107036779A CN107036779A (en) | 2017-08-11 |
| CN107036779B true CN107036779B (en) | 2023-02-28 |
Family
ID=59538115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710353447.0A Active CN107036779B (en) | 2017-05-18 | 2017-05-18 | Continuous high-speed wind tunnel experiment section rapid section changing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107036779B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896267B (en) * | 2018-07-27 | 2020-01-03 | 中国空气动力研究与发展中心高速空气动力研究所 | Method for replacing wind tunnel test section |
| CN112393874B (en) * | 2021-01-18 | 2021-03-23 | 中国空气动力研究与发展中心低速空气动力研究所 | Connection replacement method and device between wind tunnel contraction section and test section |
| CN113109018A (en) * | 2021-04-27 | 2021-07-13 | 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 | Model replacement method suitable for small continuous type cross supersonic wind tunnel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2656979Y (en) * | 2003-11-03 | 2004-11-17 | 鞍山市光学仪表有限公司 | Low speed wind tunnel detecting device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6470740B2 (en) * | 2000-12-28 | 2002-10-29 | Industrial Technology Research Institute | Low speed wind tunnel with adjustable moving boundary |
-
2017
- 2017-05-18 CN CN201710353447.0A patent/CN107036779B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2656979Y (en) * | 2003-11-03 | 2004-11-17 | 鞍山市光学仪表有限公司 | Low speed wind tunnel detecting device |
Non-Patent Citations (1)
| Title |
|---|
| 连续式跨声速风洞设计关键技术;廖达雄等;《实验流体力学》;20110815(第04期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107036779A (en) | 2017-08-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107036779B (en) | Continuous high-speed wind tunnel experiment section rapid section changing device | |
| CN103009391B (en) | Variable-structure rope-traction parallel robot for wind tunnel test | |
| CN109632238B (en) | 90-degree large attack angle device for sub-span supersonic wind tunnel | |
| CN108362465B (en) | Continuous transonic wind tunnel semi-flexible wall surface spray pipe throat block vertical space type electric driving device | |
| CN108639149B (en) | Full steering mechanism of pipe rack inspection trolley | |
| CN103879569B (en) | Oscillating block slider reciprocating solar wing assisting overturn mechanism | |
| CN206775079U (en) | A kind of aerial cables deicing robot | |
| CN103398016B (en) | A kind ofly be installed in the speed adjusting type speed reducer that cooling tower air duct drives blower fan outward | |
| CN203476749U (en) | Speed regulation type speed reducer arranged outside cooling-tower air duct and used for driving draught fan | |
| CN107171269A (en) | A kind of aerial cables deicing robot | |
| CN205607661U (en) | Test device of railway vehicle single section motor car circuit operation is used for simulating | |
| CN202742021U (en) | Bolt unscrewing and extracting equipment based on multi-axle box | |
| CN105226565A (en) | A kind of ultra-high-tension power transmission line online assignment operating means | |
| CN206740351U (en) | The fast quick change section apparatus of continuous high-speed wind tunnel experiment section | |
| CN103708388B (en) | High-accuracy heavy-load two-freedom hangs rotary device | |
| CN207953119U (en) | A kind of aircraft passenger compartment floor board screw teardown of engine people | |
| CN202596972U (en) | Non-arm-handle water turbine electric governor capable of outputting power in rotating mode | |
| CN112254920A (en) | Quick installation clamping device of jumbo size model tail boom and abdomen back boom | |
| CN220130340U (en) | Experimental equipment for measuring pneumatic interference of tilting multi-rotor aircraft | |
| CN207456469U (en) | The HWIL simulation revolving platform of satellite positioning/earth magnetism/inertia combined navigation instrument | |
| CN201676785U (en) | Nozzle scanning control mechanism for alloy atomization | |
| CN105290771A (en) | End effector used for demounting nut of high-tension transmission line and robot | |
| CN204283744U (en) | A kind of wind generating unit be installed on two-way lane isolation zone | |
| CN104373298A (en) | Wind power generation device spanning lane and mounted above lane | |
| CN107591985A (en) | Novel energy-conserving speed governing type permanent-magnet coupled speed regulator |
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 |