CN109505731A - A kind of seperated starting resistance increasing type blade of vertical axis wind turbine - Google Patents
A kind of seperated starting resistance increasing type blade of vertical axis wind turbine Download PDFInfo
- Publication number
- CN109505731A CN109505731A CN201910019580.1A CN201910019580A CN109505731A CN 109505731 A CN109505731 A CN 109505731A CN 201910019580 A CN201910019580 A CN 201910019580A CN 109505731 A CN109505731 A CN 109505731A
- Authority
- CN
- China
- Prior art keywords
- movable plate
- blade
- shaft
- vertical axis
- stationary plate
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 claims abstract description 5
- 238000010168 coupling process Methods 0.000 claims abstract description 5
- 238000005859 coupling reaction Methods 0.000 claims abstract description 5
- 239000011888 foil Substances 0.000 abstract description 4
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/06—Rotors
- F03D3/062—Rotors characterised by their construction elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Abstract
A kind of seperated starting resistance increasing type blade of vertical axis wind turbine, adopts a split structure, including stationary plate and movable plate, movable plate is inlaid in the middle part of stationary plate；The movable plate top of rim segment is fixed with first rotating shaft in front of the blade, and first rotating shaft is parallel with span of foil direction, and first rotating shaft is connected by bearing with stationary plate；The movable plate bottom end of rim segment is fixed with the second shaft in front of the blade, movable plate rotation driving motor is fixed in stationary plate immediately below second shaft vertically, and the motor shaft of movable plate rotation driving motor is arranged upward, the second shaft and the motor shaft of movable plate rotation driving motor are fixedly connected with by shaft coupling；The length of movable plate is at least the 30% of stationary plate length；The chord length of movable plate is at least the 50% of stationary plate chord length.Blade of the invention only can be obtained by carrying out simple transformation to existing airfoil fan, after vertical axis windmill is mounted with blade of the invention, vertical axis windmill low rate start performance can be effectively improved, additional friction will not be generated in high speed, effectively improves wind energy utilization.
Description
Technical field
The invention belongs to technical field of wind power generation, more particularly to a kind of seperated starting resistance increasing type vertical axis windmill leaf
Piece.
Background technique
As environment and energy problem become increasingly conspicuous, the development and utilization of renewable energy obtains the attention of countries in the world,
And wind energy occupies very big ratio in the utilization of renewable energy, wind-power electricity generation as the principal mode to wind energy utilization by
It is more and more to pay attention to.
At this stage, the Large-scale Wind Turbines for being incorporated into the power networks, are mostly horizontal axis wind-driven generator group, but wind energy
It is earliest using form be then vertical axis windmill, and the time of occurrence of vertical axis aerogenerator is then than later, mainly due to
It has been recognized that the wind energy utilization of vertical axis aerogenerator is lower than horizontal axis wind-driven generator, thus lead to vertical shaft wind
Power generator cannot be paid attention to for a long time.
With the development of lifting wind wheel technology, so that the wind energy utilization of vertical axis aerogenerator is no longer below level
Axis wind power generator, and compared with horizontal axis wind-driven generator, also there is vertical axis aerogenerator easy to maintain, blade to set
Meter be simple to manufacture, low cost, without to blower structure the advantages that.
But the wind energy utilization of vertical axis aerogenerator how is further increased, effective solution method at this stage
And it is few, by way of preventing Development of Boundary Layer and separation to the mainstream flowing control other than boundary layer, exactly solve to do
One of method；Meanwhile in order to obtain smaller threshold wind velocity, vertical axis windmill has derived from corresponding liter resistance mixed type wind energy conversion system, though
It can so improve blower low rate start performance, but influence whether wind energy utilization instead at the sources of resistance of blower when high speed.
Since the blade drag of vertical axis aerogenerator is there are two source, first is due to air fluid and blade surface
Shear stress caused by rubbing, second is pressure drag caused by the asymmetric pressure of blade surface is distributed；In practice, boundary layer
Effect be similar to reduce flow channel (or the equivalent thickness that can be regarded as increasing object), make bucket rear pressure ratio without
It is small when viscosity flow, and then form pressure drag；When flowing separates, Disengagement zone speed very little, since burble point, pressure base
This is constant, and separation will form Disengagement zone and wake flow at the rear portion of blade, they are all low-pressure areas, will lead to very strong pressure drag
(separation resistance).
Therefore, the development in boundary layer is just needed to control in the smallest limit in order to reduce resistance, and tries to prevent
It separates, and fairshaped use and selection of diffuser optimum angle of flare etc. are all built upon in this viewpoint,
It is especially even more so in the design of aerofoil profile, such as the most thick position of blade is moved backward, make the pressure of blade suction surface
Gradient becomes smaller as much as possible, at this moment boundary layer can more stable and easy holding laminar flow, the wall surface shear stress of laminar boundary layer
It is small compared with turbulent flow, so foring the lesser aerofoil profile of resistance ratios (laminar flow airfoil).
But by way of preventing Development of Boundary Layer and separation to the mainstream flowing control other than boundary layer, implement
Process is comparatively laborious always and complicated, if can be realized not changing mainstream state by being directly changed layer behavior
Flow separation control will greatly simplify implementation process, while improve the wind energy utilization of vertical axis aerogenerator.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of seperated starting resistance increasing type blade of vertical axis wind turbine,
Flowing control can be realized by being directly changed this body structure of blade not changing mainstream state, blade of the invention only leads to
Crossing simply be transformed to existing airfoil fan can be obtained, after vertical axis windmill is mounted with blade of the invention, not only
It can effectively improve the low rate start performance of vertical axis windmill, and additional friction will not be generated in high speed, effectively improve
The wind energy utilization of vertical axis windmill.
To achieve the goals above, the present invention adopts the following technical scheme: a kind of seperated starting resistance increasing type vertical-shaft wind
Machine blade, adopts a split structure, including stationary plate and movable plate, and movable plate is inlaid in the middle part of stationary plate；The movable plate top of rim segment in front of the blade
End is fixed with first rotating shaft, and first rotating shaft is parallel with span of foil direction, and first rotating shaft is connected by bearing with stationary plate；In leaf
The movable plate bottom end of piece leading edge segments is fixed with the second shaft, is fixed with movable plate rotation driving in the stationary plate immediately below the second shaft vertically
Motor, and the motor shaft of movable plate rotation driving motor is arranged upward, the motor of second shaft and movable plate rotation driving motor
Axis is fixedly connected with by shaft coupling.
The length of the movable plate is at least the 30% of stationary plate length.
The chord length of the movable plate is at least the 50% of stationary plate chord length.
Beneficial effects of the present invention:
Seperated starting resistance increasing type blade of vertical axis wind turbine of the invention, can not change mainstream state and by direct
Change this body structure of blade to realize flowing control, blade of the invention is only by carrying out simple transformation to existing airfoil fan
It can get, after vertical axis windmill is mounted with blade of the invention, not only can effectively improve the low speed of vertical axis windmill
Starting performance, and additional friction will not be generated in high speed, effectively increase the wind energy utilization of vertical axis windmill.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of seperated starting resistance increasing type blade of vertical axis wind turbine of the invention；
Fig. 2 is A-A cross-sectional view in Fig. 1；
Fig. 3 is the schematic diagram of movable plate in the open state in Fig. 2；
In figure, 1-stationary plate, 2-movable plates, 3-first rotating shafts, 4-bearings, the 5-the second shaft, 6-movable plate rotations driving
Motor, 7-shaft couplings.
Specific embodiment
The present invention is described in further detail in the following with reference to the drawings and specific embodiments.
As shown in Figures 1 to 3, a kind of seperated starting resistance increasing type blade of vertical axis wind turbine, adopts a split structure, including quiet
Piece 1 and movable plate 2, movable plate 2 are inlaid in 1 middle part of stationary plate；2 top of movable plate of rim segment is fixed with first rotating shaft 3 in front of the blade, and first turn
Axis 3 is parallel with span of foil direction, and first rotating shaft 3 is connected by bearing 4 with stationary plate 1；2 bottom end of movable plate of rim segment in front of the blade
It is fixed with the second shaft 5, is fixed with movable plate rotation driving motor 6 in the stationary plate 1 immediately below the second shaft 5 vertically, and movable plate is put
The motor shaft for turning driving motor 6 is arranged upward, and second shaft 5 and the motor shaft of movable plate rotation driving motor 6 pass through shaft coupling
Device 7 is fixedly connected with.
The length of the movable plate 2 is at least the 30% of 1 length of stationary plate.
The chord length of the movable plate 2 is at least the 50% of 1 chord length of stationary plate.
Illustrate first use process of the invention with reference to the accompanying drawing:
Aerofoil profile handbook is taken by looking into, selection vane airfoil profile is symmetrical airfoil 0018, makes two groups of leaves according to the aerofoil profile of selection
Piece, first group of blade is traditional blades, and second of blade is transformed on the basis of traditional blades according to the present invention, two groups of blades
It is wooden structures, leaf chord length 100mm, span of foil 600mm；Blade quantity in every group is four；Due to leaf
Piece is wooden structures, and in order to be impacted after reducing fission to the intensity of blade of the present invention, it is preferable that rigidity can be packed into slot
Metal reinforced part, while in order to guarantee that metal of the vertical shaft wind force tester in the balance of rotation process, each blade adds
The installation site of firmware will be consistent.
After above-mentioned preparation, respectively by two groups of blade assemblings to vertical shaft wind force tester, first to being equipped with
The vertical shaft wind force tester of traditional blades is tested.During the test, when traditional blades are worked, blade and air
After the meeting of incoming flow, lift by blade itself is needed to generate power in rotation round tangential component, but work as tangential component
When cannot overcome the system resistance of wind-force testing machine, blower cannot start, thus only wind-force increase to can provide enough
Tangential component when, blower could start, and also determine the wind energy utilization of the vertical shaft wind force tester under traditional blades at this time
Rate.
Next, testing the vertical shaft wind force tester for being equipped with blade of the present invention.During the test, this hair
When bright blade working, before blower starting, the angle of the motor shaft rotation setting of movable plate rotation driving motor 6 is first controlled, is led to
Crossing motor shaft drives the second shaft 5 to rotate same angle, and then movable plate 2 is made to open identical angle relative to stationary plate 1, at this time
Movable plate 2 and stationary plate 1 V-shape is substantially presented, when the opening of V-shape is towards air-flow, which can generate significantly air-flow
Resistance, and the reaction force of air-flow translates into the rotary power of blade；When blade starting after, in low-speed range, blade by
To resistance do positive work；With being gradually increased for blade rotational speed, the resistance that blade is subject to will become doing negative work, resistance excessive at this time
Power will generate inhibition to the rotation of blade, it is therefore desirable to control the motor shaft reversed turning of movable plate rotation driving motor 6 extremely
Initial position fastens to movable plate 2 again together with stationary plate 1, and to restore the aerodynamic configuration of blade script, blade original is effectively ensured
This aeroperformance, finally improves the low rate start performance of vertical shaft wind force tester, to make vertical shaft wind force tester
Wind energy utilization be improved.
The scope of patent protection that scheme in embodiment is not intended to limit the invention, it is all without departing from carried out by the present invention etc.
Effect implements or change, is both contained in the scope of the patents of this case.
Claims (3)
1. a kind of seperated starting resistance increasing type blade of vertical axis wind turbine, it is characterised in that: adopt a split structure, including stationary plate and
Movable plate, movable plate are inlaid in the middle part of stationary plate；The movable plate top of rim segment is fixed with first rotating shaft, first rotating shaft and blade exhibition in front of the blade
Length direction is parallel, and first rotating shaft is connected by bearing with stationary plate；The movable plate bottom end of rim segment is fixed with the second shaft in front of the blade,
Movable plate rotation driving motor, and the motor shaft court of movable plate rotation driving motor are fixed in stationary plate immediately below second shaft vertically
Upper setting, second shaft and the motor shaft of movable plate rotation driving motor are fixedly connected with by shaft coupling.
2. a kind of seperated starting resistance increasing type blade of vertical axis wind turbine according to claim 1, it is characterised in that: described dynamic
The length of piece is at least the 30% of stationary plate length.
3. a kind of seperated starting resistance increasing type blade of vertical axis wind turbine according to claim 1, it is characterised in that: described dynamic
The chord length of piece is at least the 50% of stationary plate chord length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910019580.1A CN109505731A (en) | 2019-01-09 | 2019-01-09 | A kind of seperated starting resistance increasing type blade of vertical axis wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910019580.1A CN109505731A (en) | 2019-01-09 | 2019-01-09 | A kind of seperated starting resistance increasing type blade of vertical axis wind turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109505731A true CN109505731A (en) | 2019-03-22 |
Family
ID=65756397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910019580.1A Pending CN109505731A (en) | 2019-01-09 | 2019-01-09 | A kind of seperated starting resistance increasing type blade of vertical axis wind turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109505731A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103375339A (en) * | 2012-04-13 | 2013-10-30 | 黄石华科新能源科技有限公司 | Vertical-axis wind generator with starting auxiliary wings |
| CN203285619U (en) * | 2013-02-05 | 2013-11-13 | 上海理工大学 | Sectional blade and wind power generator |
| CN103603766A (en) * | 2013-11-30 | 2014-02-26 | 米建军 | Wind wheel with variable blades and attack angles |
| EP2510228B1 (en) * | 2009-12-11 | 2016-05-25 | Peter Janiuk | Vertical axis wind turbine with self-starting capabilities |
| CN209510519U (en) * | 2019-01-09 | 2019-10-18 | 沈阳航空航天大学 | A kind of seperated starting resistance increasing type blade of vertical axis wind turbine |
-
2019
- 2019-01-09 CN CN201910019580.1A patent/CN109505731A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2510228B1 (en) * | 2009-12-11 | 2016-05-25 | Peter Janiuk | Vertical axis wind turbine with self-starting capabilities |
| CN103375339A (en) * | 2012-04-13 | 2013-10-30 | 黄石华科新能源科技有限公司 | Vertical-axis wind generator with starting auxiliary wings |
| CN203285619U (en) * | 2013-02-05 | 2013-11-13 | 上海理工大学 | Sectional blade and wind power generator |
| CN103603766A (en) * | 2013-11-30 | 2014-02-26 | 米建军 | Wind wheel with variable blades and attack angles |
| CN209510519U (en) * | 2019-01-09 | 2019-10-18 | 沈阳航空航天大学 | A kind of seperated starting resistance increasing type blade of vertical axis wind turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101749188A (en) | Root sleeve for wind turbine blade | |
| CN109441719A (en) | A kind of film autoexcitation oscillatory type blade of vertical axis wind turbine | |
| KR20120061264A (en) | Vertical axis wind turbine having cascaded mutiblade | |
| CN1719023B (en) | Resistance and lifting force composite wind pwoer device | |
| CN209510519U (en) | A kind of seperated starting resistance increasing type blade of vertical axis wind turbine | |
| CN109737004A (en) | It improves the standard the method for axis pneumatic equipment bladess starting performance by adjusting blade camber | |
| CN209510518U (en) | A kind of film autoexcitation oscillatory type blade of vertical axis wind turbine | |
| CN209510517U (en) | A kind of film acoustically-driven oscillatory type blade of vertical axis wind turbine | |
| CN209340080U (en) | A kind of diaphragm starting resistance increasing type Blades For Horizontal Axis Wind | |
| CN103629050A (en) | Cross-flow and rotational flow wind driven generator | |
| CN209510516U (en) | A kind of hybrid Blades For Horizontal Axis Wind of liter resistance | |
| CN109505731A (en) | A kind of seperated starting resistance increasing type blade of vertical axis wind turbine | |
| CN204755184U (en) | Take vertical axis wind turbine blade of water conservancy diversion strip | |
| CN206144708U (en) | Resistance type gentle breeze is from becoming oar aerogenerator | |
| CN103291539A (en) | Blade swing wing design method and H-type vertical axis wind turbine with blade swing wings | |
| CN202991344U (en) | Vertical axis air suction wind turbine | |
| CN203441675U (en) | Blade of novel horizontal-axis wind turbine | |
| CN208870737U (en) | A kind of pneumatic equipment bladess | |
| CN105545583A (en) | Wind turbine blade and determination method for dip angle of outflow tangent line of leeside | |
| CN106837683B (en) | The optimal value for going out to flow tangent line inclination angle of windward side determines method | |
| CN203051001U (en) | Multi-machine united wind driven generator | |
| CN104564523A (en) | Wind driven generator with blades with guide, backlash and extension and retraction functions | |
| CN201723370U (en) | Efficient wind-driven generator | |
| CN209621521U (en) | A kind of blade of vertical axis wind turbine with diversion function | |
| CN109441720A (en) | A kind of film acoustically-driven oscillatory type blade of vertical axis wind turbine |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190322 |