CN104280208B - A kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack regulate system - Google Patents
A kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack regulate system Download PDFInfo
- Publication number
- CN104280208B CN104280208B CN201410589882.XA CN201410589882A CN104280208B CN 104280208 B CN104280208 B CN 104280208B CN 201410589882 A CN201410589882 A CN 201410589882A CN 104280208 B CN104280208 B CN 104280208B
- Authority
- CN
- China
- Prior art keywords
- angle
- attack
- hydrofoil
- fixed
- hole
- 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.)
- Expired - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of water tunnel experiment blade tip clearance and angle of attack regulation system, belong to Hydraulic and Hydro-Power Engineering technical field.System is made up of water hole viewing section (1), fixed plate (3), location nut (4), support bar (5), locating piece (6), hydrofoil connecting rod (7), angle of attack adjusting nut (8) and elastic sealing structure；2 fixed plates (3) keep at a certain distance away and are fixed on water hole viewing section (1) stationary plane；2 support bars (5) are respectively perpendicular is fixed on 2 fixed plates (3)；2 support bars (5) are positioned through locating piece (6) both ends through hole by location nut (4)；Hydrofoil connecting rod (7) smooth end is sealed through water hole viewing section (1) stationary plane by elastic sealing structure, and the end of thread is fixed through locating piece (6) by angle of attack adjusting nut (8).Contrast existing system, present configuration is simple, compact, saves space, it is easy to mobile and dismounting, cost is low, good airproof performance.
Description
Technical field
The present invention relates to a kind of water tunnel experiment hydrofoil blade tip clearance and angle of attack regulation system, belong to water conservancy and hydropower
Engineering, marine ship field of engineering technology.
Background technology
Aerofoil profile is the elementary cell of hydraulic structure, around hydrofoil flowing research work in hydraulic
Portion's flow mechanism research, optimizes great significance for design.
At propeller, turbine pump, hydraulic turbine start and stop, fly in the transient processes such as ease, increasing and decreasing load, transient state
Process transient flow can make the effective angle of attack of lifting surface change, and has under its internal flow and design conditions
Dramatically different.Therefore, hydrodynamic load and vibration under object off-design behaviour under the different angles of attack are understood
Change, to understanding hydraulic transient process flow mechanism and dynamic trait, improving hydraulic performance has important
Meaning.Meanwhile, hydrofoil blade tip clearance is significant in hydraulic is studied.Ducted propeller,
In turbine, Internal Flow in Axial Pump, the pressure reduction near blade tip clearance can cause the generation of cavitation phenomenon,
Thus cause the harm such as noise, cavitation corrosion, vibration and hydraulic performance decline.In axial-flow pump, wheel rim and runner envelope
Between be inevitably present leaf top (wheel rim) gap, blade-tip leakage flow moves the cavitation structure of induction can be to master
Flow field structure has an immense impact on, thus can significantly reduce hydraulic performance, when situation is serious, and clearance cavitation band
Induction unit is produced abnormal vibrations and noise, serious threat axial-flow pump unit long-term safety stable operation.
Present stage, the Related Experimental Study the most preliminarily formed is mostly in hydraulic experimental system
Carrying out, hydrofoil blade tip clearance and attack angle regulator are separate, and structure is complicated, operation inconvenience, test into
This is higher.
Summary of the invention
The present invention seeks to as the existing hydrofoil blade tip clearance of solution and attack angle regulator is separate, structure is multiple
The problem that miscellaneous, experimental cost is high, it is provided that a kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack regulate system,
The quantitative regulation of the hydrofoil angle of attack and blade tip clearance can be realized.
The object of the invention is achieved through the following technical solutions:
A kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack regulate system, by water hole viewing section, fixed plate,
Location nut, support bar, locating piece, hydrofoil connecting rod, angle of attack adjusting nut and elastic sealing structure group
Become.
Described water hole viewing section comprises transparent observing face and stationary plane, and stationary plane centre bit is equipped with boss, boss
On have through hole, pass for hydrofoil connecting rod；
Described fixed plate central part has through hole, passes for support bar；
There is screw thread on described support bar surface, with location nut screw connection；
Described locating piece both ends respectively have a through hole, pass for support bar；
Described locating piece central part has a through hole, passes for hydrofoil connecting rod；
Described hydrofoil connecting rod end surface has screw thread, for coordinating with angle of attack adjusting nut；
Described hydrofoil connecting rod end surface is smooth, for through viewing section stationary plane center, water hole boss
Through hole；
Preferably, system also includes pad, for using with nut screw connection, to increase tightness.
Preferably, elastic sealing structure is rubber sealing boot.
Annexation: 2 pieces of fixed plates keep at a certain distance away and are fixed on the viewing section stationary plane of water hole；2
Strut uses location nut to fix through 2 fixed plate central part through holes with being respectively perpendicular；2 support bars are respectively
It is vertically fixed on locating piece by the location nut inside and outside locating piece；The smooth end of hydrofoil connecting rod passes
Viewing section stationary plane center, water hole boss through hole is connected with hydrofoil, is seen with water hole by elastic sealing structure
The section of examining stationary plane center boss seals；The end of thread extends perpendicularly through locating piece central part through hole by 2
Angle of attack adjusting nut is fixed on locating piece, is held in position block parallel with water hole viewing section stationary plane.
Preferably, fixed plate both ends use riveting or welding manner to be fixed on water hole observation section stationary plane.
Preferably, support bar is pressed and fixed in fixed plate by 2 location nuts.
Work process: by rotating the hydrofoil connecting rod regulation hydrofoil angle of attack；By controlling angle of attack adjusting nut
Rotational angle realizes the quantitative regulation of the hydrofoil angle of attack.Real by the location nut on two support bars of synchronous axial system
Existing locating piece along hydrofoil pitman shaft to linear movement, drive hydrofoil connecting rod linearly moved in an axial direction, from
And regulate blade tip clearance；The quantitative regulation of blade tip clearance is realized by the anglec of rotation controlling location nut.
Beneficial effect
1. a kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack of the present invention regulates system, the letter of experimental provision structure
Single, compact, it is easy to dismantle and move, it is ensured that to complete experiment efficiently, quickly and obtain experimental data；With
Time sealing device easy reliable, be prevented effectively from and cause water tunnel experiment performance to reduce because of the infiltration of water tunnel experiment section,
Meet water tunnel experiment requirement；
2. a kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack of the present invention regulates systematic inorganic tool movable part, makes
Valency is cheap, is suitable to the small test researchs such as water tunnel experiment；
3. a kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack regulation system of the present invention can be attached by installing additional
Genus equipment, such as foil gauge etc., expansion experiments application, the dynamic trait for research hydrofoil further provides
Analyze experimental data reliably.
Accompanying drawing explanation
Fig. 1 is hydrofoil blade tip clearance of the present invention and angle of attack regulation system three dimensional structure schematic diagram；
Fig. 2 is fixed plate front view of the present invention；
Fig. 3 is support bar front view of the present invention；
Fig. 4 is hydrofoil connecting rod front view of the present invention；
Fig. 5 is locating piece front view of the present invention；
Fig. 6 is hydrofoil blade tip clearance of the present invention and angle of attack regulation system assembling schematic diagram.
Reference: 1 water hole viewing section, 2 rivets, 3 fixed plates, 4 location nuts, 5 support
Bar, 6 locating pieces, 7 hydrofoil connecting rods, 8 angle of attack adjusting nuts.
Detailed description of the invention
Technical solution of the present invention is specifically introduced below in conjunction with the accompanying drawings with example.
Embodiment:
As it is shown in figure 1, hydrofoil blade tip clearance of the present invention and angle of attack regulation system are by water hole viewing section 1, fixed plate
3, location nut 4, support bar 5, locating piece 6, hydrofoil connecting rod 7, angle of attack adjusting nut 8 and elasticity
Sealing structure forms.As in figure 2 it is shown, fixed plate 3 central part has through hole.As it is shown on figure 3, support bar 5
There is screw thread on surface.As shown in Figure 4, one end, hydrofoil connecting rod 7 surface non-threaded, there is screw thread one end.Such as Fig. 5
Shown in, locating piece 6 both ends and central part all have through hole.Annexation: 2 fixed plates 3 are spaced necessarily
Distance uses riveting or welding manner to be fixed on water hole viewing section 1；2 support bars 5 are each passed through and vertically
It is fixed in 2 fixed plates 3；2 support bars 5 pass locating piece 6 both ends through hole by location nut 4
Position；The smooth end of hydrofoil connecting rod 7 through water hole viewing section 1 stationary plane center boss through hole with
Hydrofoil connects, and is sealed with water hole viewing section 1 stationary plane center boss by elastic sealing structure；Screw thread
Hold and be fixed on locating piece 6 by 2 angle of attack adjusting nuts 8 through locating piece 6 central part through hole.
Installing fixing and seal: as shown in Figure 6,2 fixed plates 3 keep at a certain distance away solid by rivet 2
It is scheduled on water hole observation section 1 stationary plane peripheral position boss；2 support bars 5 are each passed through 2 fixed plates 3
The through hole of central part, is pressed by 2 location nuts 4 and is fixed in fixed plate 3, optionally, and Ke Yitong
Cross use pad and strengthen tightness；2 support bars 5 are each passed through the through hole at locating piece 6 two ends, by location
Nut 4 is fixed on locating piece 6, in fixation procedure, should be held in position block 6 and fix with water hole observation section 1
Face keeping parallelism；The smooth end of hydrofoil connecting rod 7 is fixing with hydrofoil to be connected, and the other end is in water hole viewing section 1
Portion is passed by its stationary plane center boss through hole；The smooth end of hydrofoil connecting rod 7 passes water hole viewing section 1
Part by elastic sealing structure (such as rubber sealing boot) convex with water hole viewing section 1 stationary plane center
Platform seals, it is ensured that the water in water hole will not spill from there；Hydrofoil connecting rod 7 is through locating piece 6 central part
Through hole, be fixed on locating piece 6 by 2 angle of attack adjusting nuts 8.
The angle of attack regulates: rotate hydrofoil connecting rod 7, regulates the hydrofoil angle of attack；The rotational angle of angle of attack adjusting nut 8
It is the variable quantity of the hydrofoil angle of attack, during regulation, notes the different direction of rotation of angle of attack adjusting nut 8 and water
The increase of the wing angle of attack reduces corresponding；The combination of level indicator and protractor can be used during regulation to determine hydrofoil
The angle of attack；Notice after regulation that locating piece 6 both sides are all pressed fixing with angle of attack adjusting nut 8, it is ensured that hydrofoil
Angle of attack variation will not occur under hydrodynamism in an experiment.
Gap adjustment: the location nut 4 on two support bars 5 of synchronous axial system so that hydrofoil top and water hole are seen
The section of examining 1 transparent observing face gapless, notes in rotation process first rotating the location spiral shell near water hole viewing section 1
Female 4；Then locating piece 6 with inner side location nut 4 along support bar 5 linear movement, when hydrofoil withstands lamella lucida
Time keep inside position nut 4 motionless, outside location nut 4 compress locating piece 6, now hydrofoil blade tip clearance
It is 0；If target gap is not 0, can be by positioning nut 4 fixed angles outside the rotation of first synchronous backward
Degree, then inside synchronous backward rotation, location nut 4 is to compressing locating piece 6, and so far, hydrofoil blade tip clearance is adjusted
Whole complete.
Wherein location, outside nut 4 anglec of rotation α is calculated by below equation:
α=(δ/P) * 360
In formula: α unit is angle；δ represents blade tip clearance, and unit is millimeter；P represents the spiral shell of support bar 5
Away from, unit is millimeter.
Last it should be noted that above only in order to technical scheme to be described, the common skill of this area
Technical scheme can be modified or equivalent by art personnel.All spirit in the present invention and
Made an amendment within principle, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (5)
1. a water tunnel experiment hydrofoil blade tip clearance and the angle of attack regulate system, it is characterised in that: include water hole
Viewing section (1), fixed plate (3), location nut (4), support bar (5), locating piece (6), hydrofoil connecting rod (7),
Angle of attack adjusting nut (8) and elastic sealing structure；
Described water hole viewing section (1) comprises transparent observing face and stationary plane, and stationary plane centre bit is equipped with boss, convex
Have through hole on platform, pass for hydrofoil connecting rod (7)；
Described fixed plate (3) central part has through hole, passes for support bar (5)；
There is screw thread on described support bar (5) surface, coordinates with location nut (4)；
Described locating piece (6) both ends respectively have a through hole, pass for support bar (5)；Central part has one
Individual through hole, passes for hydrofoil connecting rod (7)；
Described hydrofoil connecting rod (7) end surface has screw thread, for coordinating with angle of attack adjusting nut (8)；One end table
Face is smooth, for through water hole viewing section (1) stationary plane center boss through hole；
Annexation: 2 fixed plates (3) keep at a certain distance away and are fixed on water hole viewing section (1) stationary plane；2
Individual support bar (5) uses location nut (4) to fix through 2 fixed plate (3) central part through holes with being respectively perpendicular；2
Individual support bar (5) is vertically fixed on locating piece (6) by the location nut inside and outside locating piece (6) respectively；Water
Wing connecting rod (7) smooth end is connected through water hole viewing section (1) stationary plane center boss through hole with hydrofoil, logical
Cross elastic sealing structure to seal with water hole viewing section (1) stationary plane center boss；The end of thread extends perpendicularly through
Locating piece (6) central part through hole is fixed on locating piece (6) by 2 angle of attack adjusting nuts (8), is held in position block
(6) parallel with water hole viewing section (1) stationary plane.
2. a kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack as claimed in claim 1 regulate system, its
It is characterised by: system also includes pad, for using with nut screw connection, to increase tightness.
3. a kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack as claimed in claim 1 regulate system, its
It is characterised by: elastic sealing structure is rubber sealing boot.
4. a kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack as claimed in claim 1 regulate system, its
It is characterised by: fixed plate (3) both ends are fixed on water hole observation section (1) stationary plane by riveting or welding manner.
5. a kind of water tunnel experiment hydrofoil blade tip clearance and angle of attack regulation as described in claim 1-4 is arbitrary are
System, it is characterised in that: support bar (5) is pressed and fixed in fixed plate (3) by 2 location nut (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410589882.XA CN104280208B (en) | 2014-10-28 | 2014-10-28 | A kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack regulate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410589882.XA CN104280208B (en) | 2014-10-28 | 2014-10-28 | A kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack regulate system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104280208A CN104280208A (en) | 2015-01-14 |
| CN104280208B true CN104280208B (en) | 2016-09-28 |
Family
ID=52255317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410589882.XA Expired - Fee Related CN104280208B (en) | 2014-10-28 | 2014-10-28 | A kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack regulate system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104280208B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990684B (en) * | 2015-06-26 | 2017-09-26 | 西安理工大学 | The hydrodynamic characterisitic test device and method of testing of a kind of basic aerofoil profile |
| CN106950033A (en) * | 2017-01-24 | 2017-07-14 | 大连理工大学 | A kind of variable angle of attack hydrofoil cavitation water tunnel test system |
| CN106768851B (en) * | 2017-02-21 | 2018-11-02 | 哈尔滨工业大学 | A kind of supercavitating vehicle water tunnel experiment device around head pitching |
| CN107894323B (en) * | 2017-11-15 | 2019-09-13 | 北京理工大学 | A kind of water tunnel experiment oscillation hydrofoil unit |
| CN108775850B (en) * | 2018-06-11 | 2024-01-19 | 中国空气动力研究与发展中心高速空气动力研究所 | Planar blade cascade test device capable of continuously changing blade top gap and test method thereof |
| CN109342015B (en) * | 2018-08-31 | 2020-12-11 | 南京理工大学 | Water tunnel experimental device capable of generating oscillating incoming flow |
| CN114575302B (en) * | 2022-03-25 | 2022-11-08 | 安徽农业大学 | Electrodynamic type mechanical seal wing section angle adjustment mechanism |
| CN115493803B (en) * | 2022-08-26 | 2023-05-26 | 哈尔滨工程大学 | Rotary force measuring device capable of maintaining airtight and force measuring method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225479A (en) * | 2011-06-08 | 2011-10-26 | 上海电气核电设备有限公司 | Processing device of crack source bead notch on drop hammer test block |
| CN102680222A (en) * | 2012-05-14 | 2012-09-19 | 大连理工大学 | Blade experiment device for tidal current energy water turbine |
| CN203221993U (en) * | 2013-05-03 | 2013-10-02 | 大唐陈村水力发电厂 | Hydraulic cylinder overhauling trailer |
| CN103394901A (en) * | 2013-08-14 | 2013-11-20 | 株洲时代新材料科技股份有限公司 | Method for realizing quick maintaining and replacing of spherical hinges used in link mechanism, and auxiliary fixture |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4012969B2 (en) * | 2004-03-30 | 2007-11-28 | 独立行政法人海上技術安全研究所 | Search method of optimum setting angle of sail of sailing ship |
-
2014
- 2014-10-28 CN CN201410589882.XA patent/CN104280208B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102225479A (en) * | 2011-06-08 | 2011-10-26 | 上海电气核电设备有限公司 | Processing device of crack source bead notch on drop hammer test block |
| CN102680222A (en) * | 2012-05-14 | 2012-09-19 | 大连理工大学 | Blade experiment device for tidal current energy water turbine |
| CN203221993U (en) * | 2013-05-03 | 2013-10-02 | 大唐陈村水力发电厂 | Hydraulic cylinder overhauling trailer |
| CN103394901A (en) * | 2013-08-14 | 2013-11-20 | 株洲时代新材料科技股份有限公司 | Method for realizing quick maintaining and replacing of spherical hinges used in link mechanism, and auxiliary fixture |
Non-Patent Citations (4)
| Title |
|---|
| 《不同空化数下轴流泵叶顶间隙区空化特性》;张德胜 等;《农业机械学报》;20140228;第45卷(第2期);第115-121页 * |
| 《绕Hydronautics水翼空化旋涡的高速录像观察》;李向宾 等;《工程热物理学报》;20060531;第27卷(第3期);第426-428页 * |
| 《绕三维水翼云状空化现象的实验研究》;时素果 等;《应用力学学报》;20110430;第28卷(第2期);第105-110页 * |
| 《绕水翼空化流场的数值模拟与试验研究》;尹必行 等;《机械工程学报》;20120831;第48卷(第16期);第146-151页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104280208A (en) | 2015-01-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104280208B (en) | A kind of water tunnel experiment hydrofoil blade tip clearance and the angle of attack regulate system | |
| BRPI0604707A (en) | propeller blade for a rotor of a wind power turbine | |
| CN109209602B (en) | CFD-based diesel engine cooling water pump optimization method | |
| US20160362991A1 (en) | Runner for a tidal power plant and tidal power plant comprising such a runner | |
| CN203108697U (en) | Rainfall device for geotechnical centrifuge model test | |
| CN104913076A (en) | Low-noise cut-off ball valve | |
| CN106409356A (en) | Nuclear power plant passive overflow exhaust device | |
| CN201439838U (en) | Mesh cohesive-type control valve | |
| CN206271430U (en) | A kind of passive exhaust apparatus of nuclear power plant | |
| CN204606165U (en) | A kind of ship water-leakage emergency leakage blocking device | |
| CN202091286U (en) | Internal-circulation balanced pressure oil cylinder | |
| CN203348555U (en) | Stern shaft rotatable pressurized sealing device | |
| CN203030658U (en) | Rotary flange device of small cavity of main shear cylinder | |
| CN102192213A (en) | Internal recycle balance pressure oil cylinder | |
| CN203655359U (en) | Marine turbine self crown blade externally-wrapped pull bar vibration reduction structure | |
| CN211039065U (en) | Water pump with detachable pipeline interface surface during motor replacement | |
| CN208057298U (en) | A kind of hydraulic motor being easy to heat dissipation | |
| CN207231724U (en) | A kind of seal test device | |
| CN201697839U (en) | Hydraulic three-way centrifugal loading device | |
| CN106628080B (en) | A kind of blade displacement device | |
| MX2010007227A (en) | Hydraulic machine, energy conversion plant comprising such a machine and method of adjusting such a machine. | |
| RU2369770C1 (en) | Hydraulic turbine | |
| CN204758462U (en) | Concrete structure device of nai corrosion test | |
| CN209762418U (en) | high-frequency high-speed connecting clamping block for ultra-high-temperature high-pressure steam emptying valve | |
| CN103639218A (en) | Semi-automatic isometric angle extrusion testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20171028 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |