CN205719472U - Experimental provision about rotating airfoils equipment - Google Patents
Experimental provision about rotating airfoils equipment Download PDFInfo
- Publication number
- CN205719472U CN205719472U CN201620347348.2U CN201620347348U CN205719472U CN 205719472 U CN205719472 U CN 205719472U CN 201620347348 U CN201620347348 U CN 201620347348U CN 205719472 U CN205719472 U CN 205719472U
- Authority
- CN
- China
- Prior art keywords
- aerofoil profile
- water tank
- main disk
- experimental provision
- bars
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Aerodynamic Tests, Hydrodynamic Tests, Wind Tunnels, And Water Tanks (AREA)
Abstract
The utility model discloses a kind of experimental provision about rotating airfoils equipment, this device includes water tank, fixed support, rotational structure, main disk and detachable annulus；Fixed support separates with water tank, and rotational structure is positioned on fixed support；This experimental provision can carry out laboratory observation for the rotation effect of aerofoil profile, and the theoretical research that aerofoil profile rotates boundary region provides experiment to support, highly beneficial for fundamental research.This experimental provision can realize aerofoil profile experimentation under different rotating speeds by regulation motor speed, can need to change different aerofoil profiles according to research, can be according to the different experiments Research Requirements regulation aerofoil profile angle of attack and vane pivot radius, spacing and the disk diameter changing upper lower disc can be regulated, experiment relevant parameter can be regulated thus obtain the experimental situation of the different fluid Reynolds number needed.
Description
Technical field
This utility model belongs to rotating machinery field, relates to rotating machinery blade design, is specifically related to one
Plant rotating airfoils experimental provision.
Background technology
As the one of universal machine, rotating machinery is widely used in iron and steel, cement, petroleum and petrochemical industry and builds
Building the industries such as ventilating drainage, usage amount is huge, also consumes the substantial amounts of energy simultaneously.Therefore, rotation is promoted
The efficiency of machinery is obtained in that considerable economic and social benefit.
Moving for Flow in Impeller, using rotating coordinate system is easily to research.Rotating coordinate system is with used
Property exist association, dead axle, determine rotating speed fundamental equation in add coriolis force item and centripetal acceleration item.
Directly impeller being carried out holistic approach, difficulty is bigger.
Traditional research method does not consider often the impact of effect that blade rotates and curvature, and employing flat board is near
Blade edge interlayer is drawn like method.Owing to rotating machinery blade rotational speed is higher, do not consider to rotate the Coriolis caused
Power and centrifugal force can produce bigger error.But owing to rotating machinery structure is complicated, consider in overall design
Blade rotate on blade edge interlayer to affect difficulty relatively big, and relevant rotation boundary layer theory does not becomes
Ripe.In order to obtain higher operational efficiency, rotating machinery now uses aerofoil profile to be blade shape mostly, and
The most blank for studying the experimental provision of rotating airfoils.
Society, people increasingly pay attention to energy-saving and emission-reduction, save the energy.Rotating machinery is widely used, greatly
Amount consumes the energy, is badly in need of being optimized design.Traditional optimization method is due to the shortage of blade boundary layer theory
Having bigger restriction, new optimization method must obtain theory support.The precision of numerical computations by turbulent flow,
The restriction of transition model, from the point of view of basic field progress, should be still that comparison is difficult attacks the most in a short time
Gram problem.Therefore, when relating to concrete engineering application, experimental verification has importance and necessity.
For the feature of Flow in Impeller motion, rotate the impact of the coriolis force that causes and centrifugal force increasingly by
Research worker is paid attention to.So it is the most necessary to design the supporting experimental provision about rotating machinery.
Summary of the invention
The purpose of this utility model is the deficiency for the existing blade investigative technique about rotating machinery, design
A kind of rotating airfoils experimental provision, coordinates PIV technology, and the theoretical research that aerofoil profile rotates boundary region provides real
Test support.
The reynolds number Re that this experimental provision relates to is:
Wherein, ρ fluid density, owing to the research range of this experimental provision belongs to incompressible fluid, therefore
ρ is constant；V is fluid velocity.D is that a characteristic length, such as fluid flow through circular pipe, then d is
The equivalent diameter of pipeline, in this experiment, d is aerofoil profile chord length.μ is the power viscosity coefficient of fluid.Reynolds number
Be the foundation differentiating flow behavior, such as, in pipe flow, the Reynolds number flowing less than 2300 is laminar flow,
Re=2300～4000 is transitive state, and when Reynolds number is more than 4000 is turbulent flow.Utilize this experimental provision
The fluid mobility status around aerofoil profile in rotating can be observed in the case of different Reynolds number.
This device coordinates PIV technology by regulation wing rotary speed with the wing anglec of rotation, and multi-angle is to rotation
Flow field near rotor type carries out observational study, including the research of its boundary region.
A kind of experimental provision about rotating airfoils equipment, including water tank, fixed support, rotational structure, master
Disk and detachable annulus；Fixed support separates with water tank, and rotational structure is positioned on fixed support；
Described fixed support includes four fixing bars and four support bars, and four fixing bars are vertically fixed on level
On face, four support bars connect four fixing bars and constitute a rectangle rack；Rectangle rack is provided with many mobile bars,
Mobile bar is vertical with wherein two support bars of rectangle rack, and mobile bar can be on two perpendicular support bars
Slidably, the height adjustable of four fixing bars；Described fixed support length is wider than water tank, not straight with water tank
Contact；
Rotational structure includes motor, power transmission shaft and aerofoil profile fixing device；Power transmission shaft connects motor and aerofoil profile is fixed
Device.The height of power transmission shaft scalable aerofoil profile fixing device；Scalable aerofoil profile fixing device is vertical with power transmission shaft,
Multiple installing hole is had, by changing diverse location in aerofoil profile fixing device in scalable aerofoil profile fixing device
Installing hole, changes aerofoil profile radius of turn；Aerofoil profile is solid with the installing hole in fixing device by attack angle regulator
Fixed connection；Motor is arranged on mobile bar, and motor can along the length direction of the support bar vertical with mobile bar certainly
By sliding；
Upside main disk is fixed on mobile bar by bolt and stud, and downside main disk passes through bolt and stud
It is arranged on water tank bottom；Upside main disk, downside main disk are coaxially disposed with transmission axle, and aerofoil profile is arranged on
Between the main disk of downside；Dismountable annulus it is provided with outside upper and lower sides main disk.
It is provided with photographing unit outside described water tank.
The concrete steps of operation experiments device are fairly simple, first select the aerofoil profile determined, fix aerofoil profile also
And regulate the angle of attack of setting；It is then determined that fluid type in water tank, the built-in full water of general recommendations water tank, root
The Reynolds number needed according to the study determines motor speed；Arrange PIV system；Finally open motor, when aerofoil profile is steady
After fixed rotation, by PIV system record experimental data.
Beneficial effect:
This experimental provision can carry out laboratory observation for the rotation effect of aerofoil profile, and aerofoil profile is rotated boundary region
Theoretical research provides experiment to support, highly beneficial for fundamental research.
This experimental provision can realize aerofoil profile experimentation under different rotating speeds by regulation motor speed,
Can according to research need to change different aerofoil profiles, can according to different experiments Research Requirements regulation the aerofoil profile angle of attack with
Vane pivot radius, can regulate spacing and the disk diameter changing upper lower disc, can regulate experiment relevant
Parameter thus obtain the experimental situation of different fluid Reynolds number needed.
The fixed support of fixing aerofoil profile separates with water tank, and water tank vibration can be avoided to affect experimental result, i.e.
The effect of vibration produced due to electric machine rotation is avoided to drive water tank vibration, it is to avoid consequent experiment is by mistake
Difference.Can be according to deep in water tank of different experiments Research Requirements regulation aerofoil profile position in water tank and aerofoil profile
Degree.In sum, this experimental provision has high degree of flexibility, meets the different experiment demand of correlational study.
Accompanying drawing explanation
Fig. 1 is experimental provision structural scheme of mechanism；
Fig. 2 is rotational structure schematic diagram；
Fig. 3 be aerofoil profile fix, adjusting means；
Fig. 4 is variable-diameter disk schematic diagram.
Detailed description of the invention
This device coordinates PIV technology by regulation wing rotary speed with the wing anglec of rotation, and multi-angle is to rotation
Flow field near rotor type carries out observational study, including the research of its boundary region.
Assuming that experimental provision is in isoperibol, when the fluid in water tank determines, the density p of fluid is with dynamic
Power viscosity coefficient μ is constant.When aerofoil profile used in experiment determines, aerofoil profile chord length d size is also constant.
Now reynolds number Re is only determined by fluid velocity v, and fluid velocity v is relevant with aerofoil profile rotary speed, by
In aerofoil profile wall without slip boundary condition, in this experiment it is believed that fluid velocity at aerofoil profile wall
The linear velocity rotated for aerofoil profile.Assume that experimental provision is in isoperibol, when the type of fluid in water tank determines
Time, then the reynolds number Re of this experiment is only determined by aerofoil profile rotary speed.This experimental provision is utilized to pass through
Regulate motor speed fluid stream in the case of different airfoil profiles rotary speed observes different Reynolds number around aerofoil profile
Emotionally condition, the boundary layer theory for research rotating airfoils gives experiment support.
Below in conjunction with the accompanying drawings and embodiment the utility model is described in further detail.
As shown in Figure 1 and Figure 2, a kind of experimental provision about rotating airfoils equipment, it is characterised in that: bag
Include water tank 1, fixed support 2, rotational structure 3, photographing unit 8, main disk 7 and detachable annulus 4；Gu
Fixed rack 2 separates with water tank 1, and rotational structure 3 is positioned on fixed support 2；
Described fixed support 2 includes four fixing bars and four support bars, and four fixing bars are vertically fixed on water
In plane, four support bars connect four fixing bars and constitute a rectangle rack 2-1；Rectangle rack 2-1 is provided with many
Root moves bar 2-2, and wherein two support bars of mobile bar 2-2 and rectangle rack 2-1 are vertical, mobile bar 2-2
Can on two perpendicular support bars slidably, the height adjustable of four fixing bars；Described fixing
Frame 2 is long is wider than water tank 1, does not directly contact with water tank；
As it is shown on figure 3, rotational structure 3 includes motor 3-1, power transmission shaft 3-2 and aerofoil profile fixing device 3-3；
Power transmission shaft 3-2 connects motor 3-1 and aerofoil profile fixing device 3-3.The fixing dress of power transmission shaft 3-2 scalable aerofoil profile
Put the height of 3-3；Scalable aerofoil profile fixing device is vertical with power transmission shaft 3-2, scalable aerofoil profile fixing device
On have multiple installing hole, by changing the installing hole of the upper diverse location of aerofoil profile fixing device 3-3, the change wing
Type radius of turn；, aerofoil profile 6 is connected by attack angle regulator and the installing hole in fixing device 3-3 are fixing；
Motor 3-1 is arranged on mobile bar, and motor 3-1 can along the length direction of the support bar vertical with mobile bar certainly
By sliding；
As shown in Figure 4, upside main disk is fixed on mobile bar by bolt and stud, and downside main disk leads to
Cross bolt and stud is arranged on water tank bottom；Upside main disk, downside main disk are coaxially disposed with transmission axle,
Aerofoil profile is arranged between upper and lower sides main disk；Dismountable annulus 4 it is provided with outside upper and lower sides main disk.
It is provided with photographing unit outside described water tank.
The concrete steps of operation experiments device include:
1 selects the aerofoil profile determined, radius of turn as required fixes aerofoil profile and regulates the leaf of needs
The sheet angle of attack；
2 determine, according to blade chord length and the angle of attack, the disk diameter up and down that experiment needs, and then install and meet experiment
The annulus up and down of demand；
3 spacing determining upper lower disc according to blade along span-wise length, are adjusted by liftable disc fixing device
Joint lower disc position in water tank makes the spacing of lower disc meet experiment demand；
4 determine fluid type in water tank, the built-in full water of general recommendations water tank, the thunder then needed according to research
Promise number determines motor speed；
5 arrange PIV system；
6 start motor, after aerofoil profile stably rotates, by PIV system record experimental data.
Wherein PIV measurement basic step is:
1 open system, checks that laser, CCD camera, software start the most normal；
2 mainstream speeds (according to motor speed) estimating test zone；
3 set two pulse intervals and pulse delay time；
4 add trace particle；
5 gather image, it is achieved measure across frame；
After 6 obtain certain result.The ginsengs such as regulation mating plate parameter, photographing unit amplification, aperture and particle concentration
Number provides picture quality；
After 7 debugging terminate, gather experimental data, shoot scale map picture, carry out post processing.
Claims (3)
1. about the experimental provision of rotating airfoils equipment, it is characterised in that: include water tank, fixed support, rotational structure, main disk and detachable annulus；Fixed support separates with water tank, and rotational structure is positioned on fixed support；
Described fixed support includes four fixing bars and four support bars, and four fixing bars are vertically fixed on horizontal plane, and four support bars connect four fixing bars and constitute a rectangle rack；Rectangle rack is provided with many mobile bars, and mobile bar is vertical with wherein two support bars of rectangle rack, and mobile bar can on two perpendicular support bars slidably, the height adjustable of four fixing bars；Described fixed support length is wider than water tank, does not directly contact with water tank；
Rotational structure includes motor, power transmission shaft and aerofoil profile fixing device；Power transmission shaft connects motor and aerofoil profile fixing device；The height of power transmission shaft scalable aerofoil profile fixing device；Scalable aerofoil profile fixing device is vertical with power transmission shaft, and scalable aerofoil profile fixing device has multiple installing hole, by changing the installing hole of diverse location in aerofoil profile fixing device, changes aerofoil profile radius of turn；Aerofoil profile is connected by attack angle regulator and the installing hole in fixing device are fixing；Motor is arranged on mobile bar, and motor can along the length direction of the support bar vertical with mobile bar slidably；
Upside main disk is arranged on mobile bar, and downside main disk is arranged on water tank bottom；Upside main disk, downside main disk are coaxially disposed with transmission axle, and aerofoil profile is arranged between upper and lower sides main disk；Dismountable annulus it is provided with outside upper and lower sides main disk；
It is provided with photographing unit outside described water tank.
Experimental provision about rotating airfoils equipment the most according to claim 1, it is characterised in that: described upside main disk is fixed on mobile bar by bolt and stud.
Experimental provision about rotating airfoils equipment the most according to claim 1, it is characterised in that: downside main disk is arranged on water tank bottom by bolt and stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620347348.2U CN205719472U (en) | 2016-04-21 | 2016-04-21 | Experimental provision about rotating airfoils equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620347348.2U CN205719472U (en) | 2016-04-21 | 2016-04-21 | Experimental provision about rotating airfoils equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205719472U true CN205719472U (en) | 2016-11-23 |
Family
ID=57295759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620347348.2U Withdrawn - After Issue CN205719472U (en) | 2016-04-21 | 2016-04-21 | Experimental provision about rotating airfoils equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205719472U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784321A (en) * | 2016-04-21 | 2016-07-20 | 浙江理工大学 | Experiment apparatus for rotary aerofoil device |
| CN112964452A (en) * | 2021-02-08 | 2021-06-15 | 中国科学院力学研究所 | Variable-attack-angle hydrofoil experiment model for cutting free surface |
-
2016
- 2016-04-21 CN CN201620347348.2U patent/CN205719472U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105784321A (en) * | 2016-04-21 | 2016-07-20 | 浙江理工大学 | Experiment apparatus for rotary aerofoil device |
| CN105784321B (en) * | 2016-04-21 | 2018-06-26 | 浙江理工大学 | A kind of experimental provision about rotating airfoils equipment |
| CN112964452A (en) * | 2021-02-08 | 2021-06-15 | 中国科学院力学研究所 | Variable-attack-angle hydrofoil experiment model for cutting free surface |
| CN112964452B (en) * | 2021-02-08 | 2022-10-21 | 中国科学院力学研究所 | Variable-attack-angle hydrofoil experiment model for cutting free surface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Maeda et al. | Effect of solidity on aerodynamic forces around straight-bladed vertical axis wind turbine by wind tunnel experiments (depending on number of blades) | |
| CN105784321B (en) | A kind of experimental provision about rotating airfoils equipment | |
| Mabrouk et al. | Dynamic vibrations in wind energy systems: Application to vertical axis wind turbine | |
| Li | Effects of viscosity of fluids on centrifugal pump performance and flow pattern in the impeller | |
| Battisti et al. | Wind tunnel testing of the DeepWind demonstrator in design and tilted operating conditions | |
| Lei et al. | Investigation of wake characteristics for the offshore floating vertical axis wind turbines in pitch and surge motions of platforms | |
| CN205719472U (en) | Experimental provision about rotating airfoils equipment | |
| Anagnostopoulos et al. | Optimal design and experimental validation of a Turgo model Hydro turbine | |
| Bachant et al. | Performance and near-wake measurements for a vertical axis turbine at moderate Reynolds number | |
| Tsalicoglou et al. | RANS computations of MEXICO rotor in uniform and yawed inflow | |
| CN101892831B (en) | Method for measuring displacement efficiency of cement slurry by using temperature sensing device | |
| CN114646482A (en) | Integrated multidirectional loading model test device for offshore wind turbine | |
| CN106768836A (en) | A kind of vertical circulating water chennel for turbine test | |
| Lian et al. | Numerical study on vortex-induced vibration of wind turbine airfoil at high angle of attack via free vibration simulation | |
| Wang et al. | Influence on the solid—liquid two-phase flow from cross-section area of slurry pumps for deep-sea mining | |
| CN205262714U (en) | Marine riser streams resistance coefficient and lift coefficient's survey device | |
| Salyers | Experimental and numerical investigation of aerodynamic performance for vertical-axis wind turbine models with various blade designs | |
| CN114910249A (en) | Dynamic coupling experimental device for wind wave current and sea ice and drifting and accumulating experimental method for sea ice | |
| CN106354980B (en) | External characteristics mathematical model construction method is pumped under a kind of rotating forward pump operating condition | |
| CN115577493A (en) | Method for predicting unsteady characteristics of blades of horizontal-axis tidal current energy water turbine | |
| Liu et al. | Numerical simulation and experimental study of a two-floor structure pumping system | |
| CN109632243B (en) | Device and method for changing parameter state of flap in wind tunnel | |
| CN105740581A (en) | Friction factor modifying method under ring runner rotation | |
| Stapp et al. | On part load recirculation of pumps and fans-a generic study | |
| Avalos et al. | Aerodynamic techniques to mitigate the 3D loss in the power coefficient of vertical axis wind turbines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20180626 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20161123 Effective date of abandoning: 20180626 |