CN105673317B - A kind of Large-scale Wind Turbines vane hinge mechanism - Google Patents
A kind of Large-scale Wind Turbines vane hinge mechanism Download PDFInfo
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- CN105673317B CN105673317B CN201610162743.8A CN201610162743A CN105673317B CN 105673317 B CN105673317 B CN 105673317B CN 201610162743 A CN201610162743 A CN 201610162743A CN 105673317 B CN105673317 B CN 105673317B
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- hydraulic cylinder
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- 230000007246 mechanism Effects 0.000 title claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 238000010408 sweeping Methods 0.000 claims abstract description 21
- 238000005452 bending Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 239000007788 liquid Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 201000009482 yaws Diseases 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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
-
- 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
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- 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
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
A kind of Large-scale Wind Turbines vane hinge mechanism,Including wheel hub,Wheel hub is distributed along the circumference with three or more wheel hub cantilevers,Wheel hub cantilever root is rigidly connected with wheel hub,The top of wheel hub cantilever is hinged by the top hinge hole of the second axis pin and the support arm of blade,Support arm bottom end hinge hole is hinged by third axis pin with hydraulic cylinder top,Hydraulic cylinder bottom end is hinged by the first axis pin with wheel hub cantilever root hinge hole,Hydraulic cylinder,Wheel hub cantilever constitutes a triangle with support arm and connects,Blade is rigidly connected to together by blade and support arm,It is adjusted by hydraulic cylinder extension,Blade can be made to rotate by a certain angle around the hinge joint on wheel hub cantilever top,By rotating the angle,The wind sweeping area of wind mill wind wheel can be made to change,And change the aeroperformance of wind energy conversion system,And then adjust the wind power of wind energy conversion system stress and capture.
Description
Technical field
The present invention relates to technical field of wind power generation, more particularly to a kind of Large-scale Wind Turbines vane hinge mechanism.
Background technology
It is delivered to the most important mode that power grid is Wind Power Generation on a large scale using Large-scale Wind Turbines and by wind-powered electricity generation.
Wind energy size is influenced very big by the variation of wind speed, and the variation of wind speed has very strong randomness, thus wind energy be it is a kind of very
The unstable energy.And the electric energy that wind power generating set is sent out will be delivered to power grid, it is desirable to wind power generating set to have compared with
For stable power output, and output power will also be restricted by dispatching of power netwoks.The randomness of wind energy receives wind-powered electricity generation with power grid
Required power stability is conflicting, and in order to balance this contradiction, this is just to the power regulation ability of wind power generating set
Propose very high requirement.On the one hand, when wind speed is smaller, wind energy conversion system wants that more wind energies can be captured as possible, obtains higher
Generated output is to improve income, on the other hand, after wind speed reaches full hair and the above wind speed, it is desirable that wind energy conversion system can be by certainly
Body is adjusted, and ensures power nonoverload, is maintained full hair power or is reduced generated output according to grid requirements.
Wind energy conversion system power regulation mode includes mainly blade stall adjusting and the variable pitch of fixed pitch wind power generating set at present
Variable pitch elongation away from wind power generating set is adjusted.The main structure of fixed pitch wind turbine is that Wind wheel paddle is solid with wheel hub
Fixed rigid connection, stiff, using stall-adjusted principle, dependent on the unique airfoil structure design of blade, airfoil structure is multiple
Miscellaneous, design and manufacture are difficult, and power regulation ability is weak.The blade of pitch-controlled wind-driven generator group wind wheel is connected with wheel hub by bearing
It connects, when needing power regulation, blade relativeatoeterahub rotates an angle, the propeller pitch angle of blade is changed, to change blade
The ability for capturing wind energy, to play the purpose for adjusting wind power generating set output power, this regulative mode has larger
Power regulating range, but this wind turbine hub is complicated, manufacture maintenance cost is high, poor reliability.
Invention content
It, can be with to overcome above-mentioned technical disadvantages, the present invention to propose a kind of Large-scale Wind Turbines vane hinge mechanism
The power regulation of wind power generating set is realized in wide range.
In order to achieve the above object, the technical scheme is that：
A kind of Large-scale Wind Turbines vane hinge mechanism, including wheel hub 1, wheel hub 1 are distributed along the circumference with three or more
Wheel hub cantilever 3, respectively there are one hinge hole, 3 root of wheel hub cantilever rigidly connects with wheel hub 1 for each 3 top of wheel hub cantilever and root
It is connected together, the top of wheel hub cantilever 3 is hinged by the top hinge hole of the second axis pin 4 and the support arm 6 of blade 9, support arm 6
Bottom end hinge hole is hinged by third axis pin 7 with 8 top of hydraulic cylinder, and 8 bottom end of hydraulic cylinder passes through with 3 root hinge hole of wheel hub cantilever
First axis pin 2 is hinged, and hydraulic cylinder 8, wheel hub cantilever 3 and support arm 6 constitute a triangle and connect.
The blade 9 is made of blade 10 and support arm 6, and blade 10 and support arm 6 are rigidly connected to together, propping up
The both ends of brace 6 are equipped with hinge hole.
The hydraulic cylinder 8 uses telescoping hydraulic cylinder.
A kind of power regulating method of Large-scale Wind Turbines vane hinge mechanism is：When hydraulic cylinder 8 is flexible
When, support arm 6 is jacked up or retracted, driving blade 9 turns an angle around the second axis pin 4, realizes blade 10 around wheel hub cantilever 3
The control of top different rotation angle intuitively forms blade 9 around the bending of root, and referred to as blade is bent, and all hydraulic cylinder 8 is same
When act, you can realize that pneumatic equipment bladess rotate identical angle along 3 vertex of wheel hub cantilever, form blade bending control, make wind
It takes turns wind sweeping area stretching, extension or shrinks, after wind wheel wind sweeping area changes, the ability of wind energy conversion system capture wind energy changes correspondingly, to reach
To the purpose for adjusting wind-force acc power.
The invention has the advantages that：
1, conducive to starting under the low wind speed of wind energy conversion system.It is constant in 9 length of blade as a result of the wheel hub 1 with wheel hub cantilever 3
In the case of, equivalent to increase rotor diameter, wind wheel wind sweeping area is increased, simultaneously because 9 centre of lift of blade is along diameter
It is moved out so that wind wheel has the staring torque of bigger, to make wind energy conversion system easier start up at low wind speeds.
2, wind energy conversion system is allow to be run in more high wind speed area.Reach after wind energy conversion system completely sends out wind speed in wind speed, if wind speed
Continue to increase, extended and adjusted by hydraulic cylinder 8, blade 9 is made to rotate by a certain angle around the hinge joint on 3 top of wheel hub cantilever, is formed
Blade is bent, and reduces wind wheel wind sweeping area, simultaneously because blade bending reduces the pneumatic effect that wind acts on blade 9,
So that the ability of wind wheel capture wind energy is declined, to ensure wind energy conversion system can under more high wind speed power stability and nonoverload.At present
Common large scale wind power machine cut-out wind speed is usually 25m/s, and uses this linkwork and regulative mode, wind energy conversion system cut-out wind speed
It is expected to reach 30m/s or more.
3, wind energy conversion system high wind speed area power regulating range has been expanded.It, can be in larger model by adjusting blade bending angle
The wind sweeping area of interior change wind mill wind wheel is enclosed, while reducing torque, it therefore, can be in the larger context in high wind speed area
It adjusts the power of wind energy conversion system and wind-power electricity generation may be implemented when especially larger in wind speed and network load demand is smaller
Machine low-power operates, and at this moment wind power generating set is operated with larger spinning reserve capacity, and dispatching of power netwoks is transported with stable
Row is highly beneficial.
4, survival ability under wind energy conversion system extreme wind speeds is improved.Under the extreme wind regime such as typhoon, bent by wind machine oar leaf
So that wind wheel swing flap face is contracted to minimum, and yaws to the swing flap face angle parallel with wind direction, stoppage protection.The present invention is than at present
General wind energy conversion system wind sheltering mode reduces blade wind area about 10%~20%, thus makes wind energy conversion system in extreme wind regime lower stress
Reduce, wind resistance is enhanced, and survival ability of the wind power generating set under extreme wind regime is improved.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of blade 9 in Fig. 1.
Fig. 3 is 1 structural schematic diagram of wheel hub with wheel hub cantilever 3 in Fig. 1.
Fig. 4 be when linkwork action so that blade is turned over δ angles when wind wheel wind sweeping area by radius be R1Variation is R2Show
It is intended to.
Fig. 5 is power curves of wind-driven generator sets figure.
Specific implementation mode
The present invention will be described with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of Large-scale Wind Turbines vane hinge mechanism, including wheel hub 1, wheel hub 1 are evenly distributed
There are three wheel hub cantilever 3, respectively there are one hinge hole, 3 root of wheel hub cantilever is rigid with wheel hub 1 for each 3 top of wheel hub cantilever and root
Property link together, the top of wheel hub cantilever 3 is hinged by the top hinge hole of the second axis pin 4 and the support arm 6 of blade 9, branch
6 bottom end hinge hole of brace is hinged by third axis pin 7 with 8 top of hydraulic cylinder, and 8 bottom end of hydraulic cylinder is hinged with 3 root of wheel hub cantilever
Hole is hinged by the first axis pin 2, and hydraulic cylinder 8, wheel hub cantilever 3 and support arm 6 constitute a triangle and connect.
As shown in Fig. 2, the blade 9 is made of blade 10 and support arm 6, the connection of 6 rigidity of blade 10 and support arm
Together, the angle of the central axes 12 of the central axes 11 and support arm 6 of blade 10 is β, and β=120 ° are set at the both ends of support arm 6
There is hinge hole.
As shown in figure 3, three 3 length of wheel hub cantilever are 2m, three wheel hub cantilevers 3 are equidistant by α=hexagonal angle degree
It is distributed in 1 three directions of wheel hub.
The hydraulic cylinder 8 uses telescoping hydraulic cylinder.
A kind of power regulating method of Large-scale Wind Turbines vane hinge mechanism is：When hydraulic cylinder 8 is flexible
When, support arm 6 is jacked up or retracted, driving blade 9 turns an angle around the second axis pin 4, realizes blade 10 around wheel hub cantilever 3
The control of top different rotation angle intuitively forms blade 9 around the bending of root, and referred to as blade is bent, and three sets of hydraulic cylinders 8 are same
When act, you can realize that pneumatic equipment bladess rotate identical angle along 3 vertex of wheel hub cantilever, form blade bending control, make wind
It takes turns wind sweeping area stretching, extension or shrinks, after wind wheel wind sweeping area changes, the ability of wind energy conversion system capture wind energy changes correspondingly, to reach
To adjusting wind-force acc power.
In the present embodiment, with reference to Fig. 3, height H=2.5m of the wheel hub cantilever 3 apart from rotation center, 9 blade tip of blade to blade
The length of 9 root hinge joints is 28m, when blade 9 is fully deployed, the axis 5 of the axis 11 and place wheel hub cantilever 3 of blade 10
It overlaps, at this time wind wheel radius of gyration R1=30.5m, wind sweeping area reach maximum 2921m2, wherein due in 1 radius of gyration of wheel hub
Wind energy is not absorbed, is invalid wind sweeping area, invalid wind sweeping area 19.6m2, the 0.67% of total wind sweeping area is accounted for, is illustrated due to wheel
The increase very little of invalid wind sweeping area caused by the increase of 1 diameter of hub, the influence that wind energy is captured to wind energy conversion system are little.
As shown in figure 4, when linkwork acts, hinge joint of the blade 9 along 3 top of wheel hub cantilever is driven to rotate δ angles, when
When δ=90 °, wind mill wind wheel swing flap diameter is contracted to R2=28.1m, wind sweeping area 2481.4m2, wind sweeping area is than blade 9
15% is reduced when being fully deployed, and illustrates that the wind generator set blade linkwork captures the ability of wind energy with good to wind wheel
Good adjustment effect.
As shown in figure 5, Fig. 5 is the power graph of the present embodiment wind power generating set, wherein block curve is by two sections of a, b
Composition, is maximum power curve of the wind power generating set under each wind speed, and dashed curve c is minimum power curve, two lines it
Between region d be wind power generating set under corresponding wind speed for the power bracket of adjusting, realize Large-scale Wind Turbines
Power regulation is controlled when wind energy conversion system starts by hydraulic cylinder 8,10 axis 11 of adjustment blade and 10 place wheel hub cantilever 3 of blade
Axis 5 overlap so that wind energy conversion system staring torque is maximum, wind power generating set operating point a sections of starting point in Figure 5；In wind speed
Smaller and when need to increase wind-force acc power, hydraulic cylinder 8 is shunk, and pulls 9 bottom support arm 6 of blade, keeps blade 10 opposite
Reduce in the rotation angle δ of wheel hub cantilever 3, that is, reduce blade bending angle, when the axis of 10 axis 11 and wheel hub cantilever 3 of blade
When 5 coincidence, wind energy conversion system reaches maximum output, a sections of wind power generating set operating point in Figure 5；When wind speed reaches full hair wind speed
After, by extending hydraulic cylinder 8,9 bottom support arm 6 of blade is jacked up, rotation angle δ of the blade 10 relative to wheel hub cantilever 3 is made
Increase, at this moment wind wheel wind sweeping area reduces therewith, it is ensured that when wind speed reaches wind energy conversion system and completely sends out wind speed or more, makes wind
The wind energy of power machine capture is stablized in full hair power and nonoverload, the b sections of wind power generating set operating point in Figure 5；When power grid needs
When asking reduction, by extending hydraulic cylinder 8,9 bottom support arm 6 of blade is jacked up, makes blade 9 relative to the rotation angle of wheel hub cantilever 3
It spends δ to increase, at this moment wind wheel wind sweeping area reduces therewith, the wind energy of wind energy conversion system capture is reduced, to make wind power generating set generate electricity
Power reduces, the regions d of wind power generating set operating point in Figure 5；After wind speed is more than cut-out wind speed, wind energy conversion system is shut down,
The elongation of hydraulic cylinder 8 pushes support arm 6 to act to stroke pole, and blade 9 is rotated around 3 the second axis pin of top 4 of wheel hub cantilever, makes leaf
The 5 angle δ of axis of 10 axis 11 of piece and wheel hub cantilever 3 reaches maximum value, and wind wheel wind sweeping area is contracted to minimum, wind energy conversion system yaw
Plane and wind direction parallel direction to where making wind mill wind wheel.
Claims (2)
1. a kind of Large-scale Wind Turbines vane hinge mechanism, including wheel hub (1), it is characterised in that：Wheel hub (1) is circumferentially equal
There are three above wheel hub cantilevers (3) for cloth, and respectively there are one hinge hole, wheel hub cantilevers (3) for each wheel hub cantilever (3) top and root
Root is rigidly connected with wheel hub (1), the support arm that the top of wheel hub cantilever (3) passes through the second axis pin (4) and blade (9)
(6) top hinge hole is hinged, and support arm (6) bottom end hinge hole is hinged with hydraulic cylinder (8) top by third axis pin (7), liquid
Cylinder pressure (8) bottom end and wheel hub cantilever (3) root hinge hole are hinged by the first axis pin (2), hydraulic cylinder (8), wheel hub cantilever (3) and
Support arm (6) constitutes a triangle connection；
The blade (9) is made of blade (10) and support arm (6), and blade (10) and support arm (6) are rigidly connected to one
It rises, hinge hole is equipped at the both ends of support arm (6)；
The hydraulic cylinder (8) uses telescoping hydraulic cylinder.
2. a kind of power regulating method of Large-scale Wind Turbines vane hinge mechanism according to claim 1 is,
It is characterized in that：When hydraulic cylinder (8) are flexible, support arm (6) is jacked up or retracted, driving blade (9) is rotated around the second axis pin (4)
Certain angle, realize blade (10) around wheel hub cantilever (3) top different rotation angle control, intuitively formed blade (9) around
The bending of root, referred to as blade are bent, and all hydraulic cylinder (8) acts simultaneously, you can realize pneumatic equipment bladess along wheel hub cantilever (3)
Vertex rotates identical angle, forms blade bending control, so that wind wheel wind sweeping area is stretched or is shunk, wind wheel wind sweeping area changes
After, the ability of wind energy conversion system capture wind energy changes correspondingly, and wind-force acc power is adjusted to reach.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162743.8A CN105673317B (en) | 2016-03-21 | 2016-03-21 | A kind of Large-scale Wind Turbines vane hinge mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162743.8A CN105673317B (en) | 2016-03-21 | 2016-03-21 | A kind of Large-scale Wind Turbines vane hinge mechanism |
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| Publication Number | Publication Date |
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| CN105673317A CN105673317A (en) | 2016-06-15 |
| CN105673317B true CN105673317B (en) | 2018-11-09 |
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| CN201610162743.8A Active CN105673317B (en) | 2016-03-21 | 2016-03-21 | A kind of Large-scale Wind Turbines vane hinge mechanism |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020025092A1 (en) * | 2018-08-01 | 2020-02-06 | Vestas Wind Systems A/S | A method for controlling a tip height of a wind turbine |
| CN110374793A (en) * | 2019-07-02 | 2019-10-25 | 中国大唐集团新能源科学技术研究院有限公司 | Variable-length pneumatic equipment bladess device |
| CN111089032A (en) * | 2020-01-13 | 2020-05-01 | 李大伟 | High-power adjustable vertical axis wind generating set and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2336556A1 (en) * | 2008-09-25 | 2011-06-22 | Sonkyo, S.L. | Device for adjusting the blade pitch of a wind generator |
| CN103047084A (en) * | 2012-12-22 | 2013-04-17 | 广州红鹰能源科技有限公司 | Umbrella-type wind power generating set and working method |
| CN204003282U (en) * | 2014-05-30 | 2014-12-10 | 西安交通大学 | A kind of Novel wind power generator blade of variable area |
| CN205578179U (en) * | 2016-03-21 | 2016-09-14 | 中国华能集团清洁能源技术研究院有限公司 | Wind generating set blade hinge mechanisms |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK200500899A (en) * | 2005-06-17 | 2006-12-18 | Lm Glasfiber As | Wing with hinged wing tip |
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- 2016-03-21 CN CN201610162743.8A patent/CN105673317B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2336556A1 (en) * | 2008-09-25 | 2011-06-22 | Sonkyo, S.L. | Device for adjusting the blade pitch of a wind generator |
| CN103047084A (en) * | 2012-12-22 | 2013-04-17 | 广州红鹰能源科技有限公司 | Umbrella-type wind power generating set and working method |
| CN204003282U (en) * | 2014-05-30 | 2014-12-10 | 西安交通大学 | A kind of Novel wind power generator blade of variable area |
| CN205578179U (en) * | 2016-03-21 | 2016-09-14 | 中国华能集团清洁能源技术研究院有限公司 | Wind generating set blade hinge mechanisms |
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