CN104454358B - A kind of horizontal-shaft wind turbine with anti-high wind function and its using method - Google Patents
A kind of horizontal-shaft wind turbine with anti-high wind function and its using method Download PDFInfo
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- CN104454358B CN104454358B CN201410633846.9A CN201410633846A CN104454358B CN 104454358 B CN104454358 B CN 104454358B CN 201410633846 A CN201410633846 A CN 201410633846A CN 104454358 B CN104454358 B CN 104454358B
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- 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
Abstract
The invention discloses a kind of horizontal-shaft wind turbine with anti-high wind function and its using method, the device includes pylon, generator cabin is provided with pylon, generator cabin front end is combined with kuppe, the wheel hub being connected with generator drive gear is provided with kuppe, several blades are fixed with wheel hub, wherein：Wheel hub includes a blade fixing device that be set on hub body and can slide axially relative to hub body, circumferentially rotate, several blades one of them or several be fixed in blade fixing device, when wind speed comes more than rated wind speed or typhoon for a long time, blade fixing device first slides axially before and after making blade in blade fixing device and other blades and staggers, and then circumferentially rotates the blade and other blade axial overlaps made in blade fixing device.The present invention has the advantages that blade can launch or pack up, effectively reduces wind load, prevents the blade and structure member of wind energy conversion system from being destroyed by typhoon, improve the wind energy conversion system life-span.
Description
Technical field
The present invention relates to the technical field of wind power generation field, more particularly to a kind of trunnion axis wind with anti-high wind function
Power machine and its using method.
Background technology
For the Anti-Typhoon design of seaborne horizontal axle wind energy conversion system, Chinese scholars to having carried out many research work, such as
Increase pylon structure intensity, improve the vibration damping of wind energy conversion system, become the improvement of oar and yaw system.For present marine windmill
Anti-Typhoon design, the method for appearance is relatively more, but the substantially passive structural strength for increasing wind energy conversion system, or increase structure
Damping etc., for become the measures such as oar driftage all have it is very by force limiting.However, for the wind speed of typhoon has wind speed big, wind speed
The features such as direction change, common method, can not only increase cost, and while limiting, i.e. wind machine structure occur quickly
It is easy to be destroyed by violent typhoon.
The content of the invention
The technical problem to be solved is, for the above-mentioned state of the art, and to provide a kind of blade and can launch or receive
Rise, effectively reduce wind load, prevent the blade and structure member of wind energy conversion system from being destroyed by typhoon, improve the wind energy conversion system life-span with anti-
The horizontal-shaft wind turbine and its using method of high wind function.
The present invention solve the technical scheme that adopted of above-mentioned technical problem for：
A kind of horizontal-shaft wind turbine with anti-high wind function, including pylon, are provided with generator cabin on pylon, generate electricity
Machine cabin front end is combined with kuppe, and the wheel hub being connected with generator drive gear is provided with kuppe, and several leaves are fixed with wheel hub
Piece, wherein：Wheel hub includes a leaf for being set on hub body and sliding axially relative to hub body, circumferentially rotate
Piece fixing device, several blades one of them or it is several be fixed in blade fixing device, wind speed for a long time be more than rated wind speed
Or typhoon is when coming, blade fixing device first slides axially before and after making blade in blade fixing device and other blades and staggers,
Then circumferentially rotate the blade and other blade axial overlaps made in blade fixing device.
To optimize above-mentioned technical proposal, the concrete measure taken also includes：
Two blades are fixed with above-mentioned wheel hub, are moving vane and fixed blade, it is solid that moving vane is fixed on blade
Determine on device, when fixed blade and hub body secure fit, moving vane and fixed blade axial overlap, moving vane and solid
Fixed blade is in state vertically downward.
The first fixed block is fixed with above-mentioned blade fixing device, axial gears, wheel hub on the first fixed block, is connected with
Axially extending axle tooth runway is provided with main body, axial gears are engaged cooperation with axle tooth runway；It is fixed in blade fixing device
There is the second fixed block, on the second fixed block, be connected with circumferential gear, the front end of hub body is provided with and is coaxially set with hub body
The gear wheel put, blade fixing device have a segment distance with the front end of hub body so that when axial gears do not have displacement
During to axle tooth runway front end, circumferential gear is coordinated with gear wheel gap, when axial gears are moved to axle tooth runway front end, leaf
Piece fixing device moves to the front end of hub body in the drive bottom of axial gears, circumferential gear is engaged with gear wheel and matches somebody with somebody
Close.
Blade lock chamber is provided with the middle part of above-mentioned blade fixing device, with leaf in moving vane insertion blade lock chamber
Piece fixing device is fixedly connected.
Be provided with above-mentioned kuppe can folding upper cover plate and side cover plate, upper cover plate and side cover plate are respectively positioned on movable leaf
Piece is folded on the stroke of fixed vane nose.
Above-mentioned hub body includes fixed blade connector, and fixed blade connector is fixedly connected with hub body,
Be provided with fixed blade connecting hole in the middle part of fixed blade connector, in the fixed blade connecting hole of fixed blade insertion and with fixed leaf
Piece connector is fixedly connected.
Be provided with above-mentioned blade fixing device for prevent blade fixing device excess in displacement axial limiting block and
Circumferential limited block.
A kind of using method of the horizontal-shaft wind turbine of Anti-Typhoon function, comprises the following steps：
Step one, when receive wind speed for a long time be more than rated wind speed when or typhoon early warning when, horizontal-shaft wind turbine shut down；
Become oar blade is caused parallel to the side face of hub body；
Step 2, promotion blade fixing device, direction is the front end to hub body, axial gears is rolled in axle tooth runway
It is dynamic, blade fixing device axially-movable is driven near gear wheel；
Step 3, the end of axle tooth runway is rolled to when axial gears, the gear teeth of the circumferential gear in blade fixing device
Staggeredly it is engaged with the gear teeth of gear wheel；
Step 4, rotate in a circumferential direction blade fixing device, circumferential gear is rotated around gear wheel, drives blade to fix dress
Put along hub body and circumferentially rotate, until moving vane is turned to and fixed blade axial overlap；
After step 5, typhoon, reverse operating above-mentioned steps, by the mounted blade of horizontal-shaft wind turbine.
The step of upper cover plate and side cover plate for opening kuppe is additionally provided between step one and step 2；Step 4 and step
The step of upper cover plate and side cover plate of closure kuppe are additionally provided between five.
When promoting blade fixing device in step 2, blade fixing device is located above hub body, correspondingly, movable leaf
Piece also is located above hub body, when in step 4, moving vane is turned to fixed blade axial overlap, blade fixing device
Below hub body, correspondingly, moving vane also is located at below hub body.
Compared with prior art, the invention provides a kind of improved level axle wind energy conversion system with Anti-Typhoon function.This
The wheel hub of invention includes a blade for being set on hub body and sliding axially relative to hub body, circumferentially rotate
Fixing device, several blades one of them or it is several be fixed in blade fixing device, when typhoon comes, blade fixing device elder generation
Slide axially, then circumferentially rotating makes in blade fixing device
Blade and other blade axial overlaps.This design so that wind mill wind wheel blade has the function that can be in overlap condition,
Area of the blade by wind load is effectively reduced, and the wind load that pylon is subject to also has certain reduction, wind energy conversion system can be very
Big degree reaches opposing typhoon effect.Further, during expansion, moving vane also is located above hub body, and when folding, it is living
Movable vane piece also is located at below hub body so that the height step-down residing for blade, according to wind shear principle, pneumatic equipment bladess are subject to
Wind speed also reduce.Range of application of the present invention is wider, it is possible to use with land and marine windmill, especially for marine windmill
When Anti-Typhoon, wind energy conversion system can largely be reduced by the horizontal-shaft wind turbine mode with anti-high wind function of the present invention
The wind load being subject to, is to prevent the blade and structure member of wind energy conversion system destroyed, and improve wind energy conversion system life-span have it is important
Meaning.
Description of the drawings
Structural representation when Fig. 1 is the horizontal-shaft wind turbine normal work with anti-high wind function of the present invention；
Fig. 2 is the structural representation when Blades For Horizontal Axis Wind with anti-high wind function of the present invention packs up wind resistance；
Fig. 3 is the structural representation when kuppe of the present invention is opened；
Fig. 4 is the structural representation of wheel hub when the wind energy conversion system of the present invention normally runs；
Fig. 5 is the structural representation of wheel hub when the pneumatic equipment bladess of the present invention are packed up；
Fig. 6 is the structural representation of the pneumatic equipment bladess fixing device of the present invention；
Fig. 7 be launch with blade pack up before flowing blade wind load comparison diagram；
Fig. 8 be launch with blade pack up behind flowing wind load comparison diagram on blade；
Fig. 9 be before and after to flow the expansion of operating mode and pack up when blade root moment of flexure comparison diagram；
Figure 10 be before and after to flow the expansion of operating mode and pack up when wind wheel to bottom of towe moment of flexure comparison diagram.
Specific embodiment
Embodiments of the invention are described in further detail below in conjunction with accompanying drawing.
Fig. 1 to Figure 10 show the schematic diagram of the present invention.
Reference therein is：Pylon 1, generator cabin 2, kuppe 3, upper cover plate 31, side cover plate 32, wheel hub 4, wheel
Hub main body 41, blade fixing device 42, blade lock chamber 42a, the first fixed block 43, axial gears 44, axle tooth runway 45, second
Fixed block 46, circumferential gear 47, gear wheel 48, fixed blade connector 49, fixed blade connecting hole 49a, blade 5, activity
Blade 51, fixed blade 52.
A kind of horizontal-shaft wind turbine with anti-high wind function of the present invention, including pylon 1, are provided with generating on pylon 1
Machine cabin 2,2 front end of generator cabin are combined with kuppe 3, are provided with the wheel hub 4 being connected with generator drive gear in kuppe 3, take turns
Several blades 5 are fixed with hub 4, wherein：Wheel hub 4 includes one and is set on hub body 41 and can be relative to hub body
The 41 blade fixing devices 42 for sliding axially, circumferentially rotating, several blades 5 one of them or it is several be fixed on blade fix dress
Put on 42, when wind speed comes more than rated wind speed or typhoon for a long time, blade fixing device 42 first slides axially makes blade fix dress
Stagger before and after putting blade 5 on 42 and other blades 5, then circumferentially rotate make blade 5 in blade fixing device 42 and other
5 axial overlap of blade.
In embodiment, two blades 5 on wheel hub 4, are fixed with, are moving vane 51 and fixed blade 52, moving vane 51 is admittedly
It is scheduled in blade fixing device 42, fixes blade 52 and 41 secure fit of hub body, 52 axle of moving vane 51 and fixed blade
When overlapping, moving vane 51 is in state vertically downward with fixed blade 52.
In embodiment, the first fixed block 43 is fixed with blade fixing device 42, on the first fixed block 43, axial direction is connected with
Gear 44, is provided with axially extending axle tooth runway 45 on hub body 41, axial gears 44 are engaged cooperation with axle tooth runway 45；
The second fixed block 46 is fixed with blade fixing device 42, circumferential gear 47, hub body 41 on the second fixed block 46, is connected with
Front end be provided with the gear wheel 48 being coaxially disposed with hub body 41, the front end of blade fixing device 42 and hub body 41
With a segment distance so that when axial gears 44 are not moved to axle tooth 45 front end of runway, circumferential gear 47 and gear wheel
48 gaps coordinate, when axial gears 44 are moved to axle tooth 45 front end of runway, band of the blade fixing device 42 in axial gears 44
Dynamic bottom moves to the front end of hub body 41, makes circumferential gear 47 be engaged cooperation with gear wheel 48.
In embodiment, the middle part of blade fixing device 42 is provided with blade lock chamber 42a, and the insertion blade of moving vane 51 is solid
It is fixedly connected with blade fixing device 42 in determining chamber 42a.
In embodiment, be provided with kuppe 3 can folding upper cover plate 31 and side cover plate 32, upper cover plate 31 and side cover plate 32
It is respectively positioned on moving vane 51 to be folded on the stroke of 52 front end of fixed blade.
In embodiment, hub body 41 includes fixed blade connector 49, fixed blade connector 49 and hub body
41 are fixedly connected, and fixed blade connecting hole 49a is provided with the middle part of fixed blade connector 49, and blade is fixed in the fixed insertion of blade 52
It is fixedly connected in connecting hole 49a and with fixed blade connector 49.
In embodiment, it is provided with blade fixing device 42 for preventing the axial direction of 42 excess in displacement of blade fixing device from limiting
Position block and circumferential limited block.
A kind of using method of the horizontal-shaft wind turbine of Anti-Typhoon function, comprises the following steps：
Step one, when receive wind speed for a long time be more than rated wind speed when or typhoon early warning when, horizontal-shaft wind turbine shut down；
Become oar blade 5 is caused parallel to the side face of hub body 41；Ensure that blade fixing device 42 is located above hub body 41, accordingly
Ground, moving vane 51 also are located above hub body 41, open the upper cover plate 31 and side cover plate 32 of kuppe 3,
Step 2, promotion blade fixing device 42, direction is the front end to hub body 41, makes axial gears 44 in axle tooth
Runway 45 is rolled, and drives 42 axially-movable of blade fixing device near gear wheel 48；
Step 3, the end of axle tooth runway 45 is rolled to when axial gears 44, the circumferential gear in blade fixing device 42
47 gear teeth are staggeredly engaged with the gear teeth of gear wheel 48；
Step 4, rotate in a circumferential direction blade fixing device 42, circumferential gear 47 is rotated around gear wheel 48, drives blade
Fixing device 42 is circumferentially rotated along hub body 41, until moving vane 51 is turned to and 52 axial overlap of fixed blade；Leaf
Piece fixing device 42 is located at below hub body 41, and correspondingly, moving vane 51 also is located at below hub body 41.Closure water conservancy diversion
The upper cover plate 31 and side cover plate 32 of cover 3.
After step 5, typhoon, the blade 5 of horizontal-shaft wind turbine is launched by reverse operating above-mentioned steps.
When blade is all in state vertically downward is packed up, when running into typhoon for wind energy conversion system, with very big protection
In terms of effect, major embodiment two：First, the wind area of wind energy conversion system reduces, and reduces the wind load that wind energy conversion system is subject to, no matter to flow
From above blowing or blowing from below, good off-load effect can be reached；Second, being changed into of blade is received vertically downward
The state of rising so that the wind shear effect of pneumatic equipment bladess weakens, so as to fatigue load and ultimate load can all weaken.These for
The structural defence of wind energy conversion system has important effect.
By taking the wind energy conversion system of certain 5MW as an example, tower height is 126m to the present invention, and wind wheel radius is 60m, and arrives stream wind speed takes 40m/
s.Come the situation of flowing before and after having carried out, mounted blade is calculated with reference to wind load engineering method by the method that CFD is simulated and is packed up
The wind energy conversion system load of two states, waves torque and wind wheel to pylon bottom including normal direction wind load, blade root on blade
Portion's bending moment.Fig. 7 flows operating mode for above, normal direction wind loads distribution feelings on the blade for as can be seen from the figure launching and packing up
Condition（Blade is divided into six sections, 1-6 is blade tip to blade root respectively）, when come flow from front come when, blade wind load when packing up
Blade normal direction wind load during than launching is reduced, and has significantly reduction especially for the wind load of lower blade.Fig. 8 is
Below flowing operating mode, the blade wind load as can be seen from the figure packed up is all substantially than becoming apparent from for launching.Before and after such as Fig. 9 being
To flow under two kinds of operating modes, pneumatic equipment bladess launch and pack up the blade root load comparison figure of blade, can be drawn after packing up from figure
Blade wind load is obviously reduced, wherein, before flowing operating mode, 1 wind load of blade reduces 2.3%, due to 1, blade so directly
In the face of flowing, but blade 3 is in 1 rear of blade, carrys out stream and is blocked, therefore 3 wind load of blade reduces 80.9%；For rear
Pack up rear blade 6 and 7 wind loads reduce and become apparent from, be 83.7% and 63.2% respectively flowing operating mode in face.Figure 10 is wind wheel to bottom of towe
Moment of flexure situation, front and back is packed up rear wind wheel and reduces 61% and 78.3% respectively to the moment of flexure of bottom of towe flowing operating mode.
The present invention has very big application prospect, especially for marine windmill, by improving wind mill wind wheel so that wind wheel
Blade has the function of packing up, and significantly can reduce shutting down later wind load, Anti-Typhoon for raising wind energy conversion system
Ability, while ensureing that the structure of wind energy conversion system is not damaged, improves the service life of wind energy conversion system, significant.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
All technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
For those of ordinary skill, some improvements and modifications without departing from the principles of the present invention should be regarded as the protection of the present invention
Scope.
Claims (8)
1. a kind of horizontal-shaft wind turbine with anti-high wind function, including pylon (1), is provided with generating on described pylon (1)
Machine cabin (2), described generator cabin (2) front end are combined with kuppe (3), are provided with and generating in described kuppe (3)
The wheel hub (4) that machine is connected, is fixed with several blades (5) on described wheel hub (4), it is characterized in that：Described wheel hub (4) bag
Include a blade that be set on hub body (41) and can slide axially relative to hub body (41), circumferentially rotate to fix
Device (42), several blades (5) one of them or it is several be fixed in described blade fixing device (42), wind speed is big for a long time
When rated wind speed or typhoon come, described blade fixing device (42) first slides axially and makes in blade fixing device (42)
Stagger before and after blade (5) and other blades (5), then circumferentially rotate make blade (5) in blade fixing device (42) and other
Blade (5) axial overlap；Two blades (5) are fixed with described wheel hub (4), are moving vane (51) and fixed blade
(52), described moving vane (51) is fixed in blade fixing device (42), described fixed blade (52) and hub body
(41) when secure fit, described moving vane (51) and fixed blade (52) axial overlap, moving vane (51) and fixation leaf
Piece (52) is in state vertically downward；The first fixed block (43) is fixed with described blade fixing device (42), it is described
The first fixed block (43) on be connected with axial gears (44), be provided with axially extending axle tooth on described hub body (41)
Runway (45), described axial gears (44) are engaged cooperation with axle tooth runway (45)；It is solid in described blade fixing device (42)
Surely there is the second fixed block (46), on described the second fixed block (46), be connected with circumferential gear (47), described hub body
(41) front end is provided with the gear wheel (48) being coaxially disposed with hub body (41), described blade fixing device (42) with
The front end of hub body (41) has a segment distance so that when described axial gears (44) are not moved to axle tooth runway (45)
During front end, described circumferential gear (47) is coordinated with gear wheel (48) gap, when described axial gears (44) are moved to axle
During tooth runway (45) front end, blade fixing device (42) is before the drive bottom of axial gears (44) moves to hub body (41)
End, makes described circumferential gear (47) be engaged cooperation with gear wheel (48).
2. a kind of horizontal-shaft wind turbine with anti-high wind function according to claim 1, is characterized in that：Described blade
Blade lock chamber (42a), described moving vane (51) insertion blade lock chamber (42a) are provided with the middle part of fixing device (42)
In be fixedly connected with blade fixing device (42).
3. a kind of horizontal-shaft wind turbine with anti-high wind function according to claim 2, is characterized in that：Described water conservancy diversion
Be provided with cover (3) can folding upper cover plate (31) and side cover plate (32), the equal position of described upper cover plate (31) and side cover plate (32)
It is folded on the stroke of fixed blade (52) front end in moving vane (51).
4. a kind of horizontal-shaft wind turbine with anti-high wind function according to claim 3, is characterized in that：Described wheel hub
Main body (41) includes fixed blade connector (49), and described fixed blade connector (49) is fixed with hub body (41) to be connected
Connect, in the middle part of described fixed blade connector (49), be provided with fixed blade connecting hole (49a), described fixed blade (52) is inserted
It is fixedly connected in entering fixed blade connecting hole (49a) and with fixed blade connector (49).
5. a kind of horizontal-shaft wind turbine with anti-high wind function according to claim 4, is characterized in that：Described blade
It is provided with fixing device (42) for preventing the axial limiting block and circumferential limited block of blade fixing device (42) excess in displacement.
6. a kind of using method of the horizontal-shaft wind turbine of anti-high wind function as claimed in claim 5, is characterized in that：Including with
Lower step：
Step one, when receive wind speed for a long time be more than rated wind speed when or typhoon early warning when, horizontal-shaft wind turbine shut down；Become oar
So that side face of the blade (5) parallel to hub body (41)；
Step 2, promotion blade fixing device (42), direction is the front end to hub body (41), makes axial gears (44) in axle
Tooth runway (45) is rolled, and drives (42) axially-movable of blade fixing device near gear wheel (48)；
Step 3, the end of axle tooth runway (45), the circumferential tooth in blade fixing device (42) are rolled to when axial gears (44)
The gear teeth of wheel (47) are staggeredly engaged with the gear teeth of gear wheel (48)；
Step 4, the blade fixing device that rotates in a circumferential direction (42), make circumferential gear (47) rotate around gear wheel (48), band movable vane
Piece fixing device (42) is circumferentially rotated along hub body (41), until moving vane (51) is turned to and fixed blade (52) axle
To overlap；
After step 5, typhoon, the blade (5) of horizontal-shaft wind turbine is launched by reverse operating above-mentioned steps.
7. a kind of using method of horizontal-shaft wind turbine with anti-high wind function according to claim 6, is characterized in that：
The step of upper cover plate (31) and side cover plate (32) of opening kuppe (3) are additionally provided between step one and step 2；Step 4 with
The step of upper cover plate (31) and side cover plate (32) of closure kuppe (3) are additionally provided between step 5.
8. a kind of using method of horizontal-shaft wind turbine with anti-high wind function according to claim 7, is characterized in that：
When promoting blade fixing device (42) in step 2, blade fixing device (42) is above hub body (41), correspondingly, living
Movable vane piece (51) also is located above hub body (41), and in step 4, moving vane (51) is turned to fixed blade (52) axially
During overlap, below hub body (41), correspondingly, moving vane (51) also is located at hub body to blade fixing device (42)
(41) below.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410633846.9A CN104454358B (en) | 2014-11-12 | 2014-11-12 | A kind of horizontal-shaft wind turbine with anti-high wind function and its using method |
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| CN201410633846.9A CN104454358B (en) | 2014-11-12 | 2014-11-12 | A kind of horizontal-shaft wind turbine with anti-high wind function and its using method |
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| CN104454358B true CN104454358B (en) | 2017-04-05 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108708820A (en) * | 2018-05-16 | 2018-10-26 | 福建省新能海上风电研发中心有限公司 | A kind of wind-driven generator and its construction method of installation |
| CN109882354B (en) * | 2019-03-30 | 2019-12-03 | 张伟伟 | A kind of changeable propeller wind driven generator |
| CN110671262A (en) * | 2019-11-14 | 2020-01-10 | 南京航空航天大学 | Active folding wind turbine capable of resisting strong typhoon |
| CN112283023A (en) * | 2020-11-18 | 2021-01-29 | 西安热工研究院有限公司 | Double-blade wind wheel with variable blade positions and working method thereof |
| CN112283024A (en) * | 2020-11-18 | 2021-01-29 | 西安热工研究院有限公司 | Wind wheel with adjustable blade position and working method thereof |
| CN112283022B (en) * | 2020-11-18 | 2024-03-22 | 西安热工研究院有限公司 | Impeller with adjustable number of blades and working method thereof |
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| CN102348889A (en) * | 2008-08-22 | 2012-02-08 | 自然动力概念公司 | Folding blade turbine |
| DE102012103626A1 (en) * | 2012-04-25 | 2013-10-31 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Wind turbine for converting wind energy to electrical energy, has rotor with inner ring and outer ring, where rotor blade end is arranged facing towards rotation axis, while another rotor blade end is arranged facing away from rotation axis |
| CN104314761A (en) * | 2014-08-25 | 2015-01-28 | 丁健威 | Blade-foldable wind-power generator |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102348889A (en) * | 2008-08-22 | 2012-02-08 | 自然动力概念公司 | Folding blade turbine |
| DE102012103626A1 (en) * | 2012-04-25 | 2013-10-31 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Wind turbine for converting wind energy to electrical energy, has rotor with inner ring and outer ring, where rotor blade end is arranged facing towards rotation axis, while another rotor blade end is arranged facing away from rotation axis |
| CN104314761A (en) * | 2014-08-25 | 2015-01-28 | 丁健威 | Blade-foldable wind-power generator |
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