CN101886610B - Blade system of vertical axis wind turbine - Google Patents
Blade system of vertical axis wind turbine Download PDFInfo
- Publication number
- CN101886610B CN101886610B CN2009101389177A CN200910138917A CN101886610B CN 101886610 B CN101886610 B CN 101886610B CN 2009101389177 A CN2009101389177 A CN 2009101389177A CN 200910138917 A CN200910138917 A CN 200910138917A CN 101886610 B CN101886610 B CN 101886610B
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- blade
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- fan blade
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- blade shaft
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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
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention relates to a fan blade system of a vertical axis wind turbine, comprising at least two blades. A blade shaft is arranged above a balance axis in the horizontal direction of each blade; the distance between the blade shaft and the balance axis in the horizontal direction is required to meet the requirement of difference of upper and lower forces of the blade shaft so that the blades are quickly changed into a vertical condition from a horizontal condition under the action of force difference in the absence of wind; the blades rotate around the blade shaft in the presence of wind; one end of the blade shaft is fixedly connected with a wind wheel shaft; the blades are movably connected with the blade shaft; the wind shield surfaces of the blades and the axis of the blade shaft are in the same plane; and the blade shaft is provided with a limiter which is used for limiting the blades to only rotate horizontally in an unidirectional mode under the vertical condition. The invention has the advantages of simple structure, easy maintenance, low cost, light weight, low requirement for a wind tower, and the like. The invention is suitable for large, medium and small wind turbines, can be disassembled for transportation, can be used for manufacturing ultralarge blades to improve the power capacity of a single wind turbine, has no requirement for wind direction and is adaptive to wind direction.
Description
Technical field
The present invention relates to a kind of blade system of vertical axis aerogenerator.
Background technique
What the fan blade of vertical axis aerogenerator the earliest adopted is the structure of the two fan blades of circular arc, just so-called Φ type or be called the two blade structures of Da Lie, the fan blade of this structure is because its blowing area is little, need higher startup wind speed accordingly, vertical axis aerogenerator with this fan blade is greatly developed always, and tracing it to its cause is that its generating effect is not ideal all the time.
In recent years, people have proposed to adopt H type fan blade to replace the structure of the two fan blades of traditional round arc, the fan blade of H type vertical axis aerogenerator is to adopt air hole mechanics principle, wind tunnel simulation at the vertical shaft rotation, fan blade adopts the wing shape of aircraft, when wind wheel rotated, it can not be subjected to changing efficient etc. because of distortion; Its is formed with 4-5 fan blade of vertical line, fixes, connects the wind wheel that the connecting rod of fan blade is formed by the wheel hub of 4 dihedrals or 5 angular shape, is generated electricity by wind wheel drive rare earth permanent-magnetic generator and is sent to controller and controls the electric energy that the transmission ﹠ distribution load is used.
According to the principle of H type wind-driven generator, the rotating speed rate of climb of wind wheel improves very fast (the moment rate of climb is fast), and its generated output rate of climb is also corresponding to accelerate, and the generating curve becomes full.Under same power, the rated wind speed of vertical axis aerogenerator is little than the existing level axis wind power generator, and its generated energy when low wind speed turns round is also bigger.Though the blade system of this H type wind-driven generator has above-mentioned advantage,, yet there are many improvements that need aspect the rotating speed rate of climb of wind wheel and the curve that generates electricity.
Summary of the invention
The present invention seeks to design and a kind ofly under gentle breeze, promptly can start wind-driven generator, and the blade system of the very little vertical axis aerogenerator of windage.
Characteristics simple in structure, easy to make that another object of the present invention is that the blade system of vertical axis aerogenerator of the present invention has.
Technological scheme of the present invention is: a kind of blade system of vertical axis aerogenerator, comprise at least two fan blades, above the substantially horizontal balance axis of every fan blade, be provided with blade shaft, it is poor that distance between described blade shaft and the substantially horizontal balance axis will satisfy the upper and lower power of blade shaft, make fan blade under windless condition, fan blade promptly transfers plumbness to by level under the effect of power difference, fan blade rotates along blade shaft under the wind state having; One end of blade shaft is fixedlyed connected with rotor shaft, fan blade and blade shaft flexibly connect, the face that keeps out the wind of fan blade and the axis of blade shaft are in same plane, be provided with on the blade shaft when being used to limit fan blade in plumbness, the limiter that can only rotate horizontally, described blade system also comprises attached fan blade, rotating disk, backguy and support, fixedly connected with plane on the described rotating disk in described attached fan blade lower end, described rotating disk lower plane is fixedlyed connected with described blade shaft, described backguy one end is fixed on the side of described rotating disk, and the other end of described backguy is fixedlyed connected with the one side of fan blade by behind the support.
As improvement of the present invention, described fan blade comprises frame and is arranged on the face that keeps out the wind in the frame, and is provided with bearing on relative two of described frame vertical frames, and described bearing is arranged on the described blade shaft.
The described face material therefor that keeps out the wind is stuffy fibre cloth or stuffy nonwovens.
As to further improvement of the present invention, above or below described blade shaft, be provided with balancing weight.
As further improving to of the present invention, on described blade shaft, be provided with disc spring, described disc spring one end is fixed on the blade shaft, and the other end of described disc spring is against on the described fan blade one side.
Limiter among the present invention is straight shape or right angle type.
Described blade system also comprises wind direction detector and motor, and described wind direction detector is according to wind direction, and the control motor rotates, and rotates thereby drive fan blade, and is vertical state when fan blade is facingd the wind, and is the level of state when leeward.
Described wind direction detector is arranged on the described blade shaft.
Described motor is arranged on the fan blade one side, and drives the fan blade rotation by the gear teeth.
Adopted the vertical axis aerogenerator of the blade system of vertical axis aerogenerator of the present invention to have following advantage: the one, safe; Problems such as fan blade comes off among the present invention, fracture and fan blade fly out have obtained solving preferably, so safe; The 2nd, wind loading rating is strong and noise is little; The present invention has adopted when facining the wind, and fan blade is vertical, and leeward be the fan blade level, make the present invention can resist like this than violent typhoon, and noise can be reduced under physical environment, measure less than degree; The 3rd, the turning radius is little, and under the situation of identical generated output, the present invention has than other form wind-power electricity generations and has the littler turning radius, has saved the space, has improved efficient simultaneously; The 4th, utilize wind speed range wide, when utilizing wind resource to greatest extent, obtained bigger generating total amount, improved the Economy that wind power equipment uses.
In addition, it is very simple that the present invention also has structure, is easy to safeguard, can be fit to large, medium and small wind-driven generator; Cost is low; Removablely load in bulk defeatedly, in light weight, convenient transportation can on-the-spot be installed; Can make the super sized type fan blade, the unit generated energy is increased; To the wind tower require relatively low; Do not need wind direction, but advantages such as self adaption wind direction.
Description of drawings
Fig. 1 is an embodiment of the present invention perspective view.
Fig. 2 is the structure for amplifying schematic representation of a fan blade among Fig. 1.
Fig. 3 is the structure for amplifying schematic representation of the another kind of fan blade of the present invention.
Fig. 4 is the structure for amplifying schematic representation of the third fan blade.
Fig. 5 is the structural representation of the structure for amplifying of the 4th kind of fan blade.
Fig. 6 is the another kind of embodiment's of the present invention a perspective view.
Fig. 7 is embodiment's perspective view of the attached fan blade of band of the present invention.
Fig. 8 is embodiment's perspective view of band torsion spring structure of the present invention.
Fig. 9 is embodiment's perspective view of band wind direction anemoscope of the present invention and motor.
Embodiment
See also Fig. 1, it is a kind of blade system of vertical axis aerogenerator, comprise two fan blades 1, top at the substantially horizontal balance axis 2 (dotted line among the figure) of every fan blade 1 is provided with the blade shaft 3 that is parallel to substantially horizontal balance axis 2, substantially horizontal balance axis 2 among the present invention is imaginary lines, the substantially horizontal of its imaginary substantially horizontal balance axis 2, this fan blade 1 be balance up and down just in time.Under windless condition, fan blade can stand vertically along blade shaft 3; Distance H between blade shaft described in the present invention 3 and the substantially horizontal balance axis 2 will satisfy on the blade shaft 3, under power poor (be gravitational difference in this enforcement, certainly, also can be artificial other active force is set, as use torsion, active forces such as pulling force, example about this active force is narrated in the back), make fan blade 1 under windless condition, fan blade 1 can promptly transfer plumbness to (in this example by level, be exactly gravitational difference can make fan blade 1 under windless condition rapidly by be parallel to ground transfer to perpendicular to ground get final product), having under the wind state fan blade 1 can be along blade shaft 3 rotations; One end of blade shaft 3 is fixedlyed connected with the rotor shaft 4 perpendicular to ground, the rotor shaft of the other end of rotor shaft and generator 5 joins, fan blade 1 flexibly connects with blade shaft 3, in this example, described fan blade 1 comprises frame 11 and the face that keeps out the wind 12 that is arranged in the frame 11, respectively be provided with a bearing 13 on relative two of described frame 11 vertical frames, described bearing 13 is arranged on the described blade shaft 3; The face that keeps out the wind 12 of fan blade 1 and the axis of blade shaft 3 are in same plane, be provided with on the blade shaft 3 when being used to limit fan blade 1 in plumbness, the limiter 14 that can only rotate horizontally, in this example, limiter 14 be when wind when paper blows to sight figure person's direction, limiter 14 just in time pushes up on the frame of the fan blade 1 on the left side in the drawings, the fan blade 1 on the left side can not continue to rotate to sight figure person direction among the use figure, has maximum windage, and the fan blade 1 on the right among the figure, along blade shaft 3 under wind action, horizontally rotate near level, have minimum windage, thereby blade shaft 3 is formed a moment, make blade shaft 3 rotations, drive generator 5 generatings.When the fan blade 1 on the left side among the figure when the opposite side Rotate 180 is spent, be equally under the effect of wind-force, this fan blade 1 will be that level is (shown in the right fan blade among the figure by wind, the right fan blade has not had the level of being depicted as among the figure, mainly be to reach view for convenience of explanation), at this moment, this fan blade windage minimum helps the blade system rotation.When starting, may there be the problem at dead point when spending (rotate to as shown in FIG. 90) in the blade system of this two fan blades 1, at this moment, only need apply an external force at this place, dead point, make it cross the dead point, the present invention just can be under action of inertia, and that goes round and begins again does not stop rotation.In order to adjust the distance H between blade shaft 3 and the substantially horizontal balance axis 2 accurately so that blade system reaches optimum efficiency, can on the fan blade 1 or under balancing weight 6 is set.Fan blade 1 among the present invention both can also can rotate horizontally along blade shaft 3 along with blade shaft 3 revolves round the sun along rotor shaft 4.
Be to be symmetrical arranged with two fan blades 1 blade system of the present invention is explained among Fig. 1, in fact, the present invention can also be designed to the blade system be made up of three fan blades 1, at this moment, three fan blades preferably are arranged to star structure, and the angle between the blade shaft 3 of promptly adjacent two fan blades 1 is the structure of 120 degree.Same reason, the present invention can also be designed to by four fan blades, the structure of five fan blades or six fan blades, be configured to four fan blades, when five fan blades or six fan blades, angle between the blade shaft 3 of its adjacent separately two fan blades 1 equates that preferably during as four fan blades, the angle between the blade shaft 3 of adjacent two fan blades 1 is 90 degree; During five fan blades, the angle between the blade shaft 3 of adjacent two fan blades 1 is 72 degree; During six fan blades, the angle between the blade shaft 3 of adjacent two fan blades 1 is 60 degree.Among Fig. 1, described face 12 material therefors that keep out the wind are stuffy fibre cloth, and this fibre cloth will have certain stretching resistance, as canvas, promptly can bear certain wind-force, has lighter weight again, help installing and transportation.Obviously, all have light weight, and soft material that stretching resistance is strong or hard material all can use, and as stuffy nonwovens etc., wherein, are optimum with the soft material of light weight with stretching resistance.Limiter 14 among the present invention can be straight shape, also can be right angle type, all right other geometrical shape, as long as can block fan blade 1, it is promptly passable to guarantee that it can only unidirectionally horizontally rotate.Balancing weight 6 can improve the balance at blade shaft 3 two ends, and gravitational difference reduces when making the area difference at two ends big, make fan blade can reduce down with the wind, near surface state abreast, it is just enough to transfer plumbness under action of gravity fast to.This gravitational difference is more little, and the wind-force difference of rotor shaft both sides fan blade is big more, and utilization ratio of wind energy is high more.The very easy adjustment of the weight of balancing weight, the position can be in fan blade or outside the fan blade.Fan blade 1 is a plane, is good with four limit bodies, be the rigidity tubular structure around it, and midplane can be with canvas or enough pulling force stuffy fibrous, weight saving.
See also Fig. 2 to Fig. 5, Fig. 2 to Fig. 5 has disclosed the structure of several typical fan blades 1.Structure shown in Figure 2 is the below that its balancing weight 6 is positioned at the blade shaft 3 of fan blade 1; Structure shown in Figure 3 is the top that its balancing weight 6 is positioned at the blade shaft 3 of fan blade 1; Structure shown in Figure 4 is in the middle of the below of its balancing weight 6 blade shaft 3 of being positioned at fan blade 1; Structure shown in Figure 5 is the right, top of its balancing weight 6 blade shaft 3 of being positioned at fan blade 1, and connect as one with frame, Fig. 2 to Fig. 5 illustrates, balancing weight 6 can be arranged on fan blade 1 on or below any position, as long as help regulating blade shaft 3 and substantially horizontal balance axis 2 distance H.
See also Fig. 6, Fig. 6 is a kind of embodiment that the present invention has four fan blades, and in the present embodiment, four 1 one-tenth two pairs of fan blades are symmetrical arranged respectively, and the angle between the blade shaft 3 of adjacent two fan blades 1 is 90 degree.Long in order to prevent blade shaft 3, and instability when causing work, in this example rotor shaft 4 extended upward and constitute extension 41, hold blade shafts 3 with lateral conductor 42 again.
See also Fig. 7, Fig. 7 is embodiment's perspective view of the attached fan blade of band of the present invention.In the present embodiment, described blade system also comprises attached fan blade 71, rotating disk 72, backguy 73 and support 74, fixedly connected with plane on the described rotating disk 72 in described attached fan blade 71 lower ends, described rotating disk 72 lower planes are fixedlyed connected with described blade shaft 3 by pole 75, described backguy 73 1 ends are fixed on the side of described rotating disk 72, the other end of described backguy 73 is fixedlyed connected with the one side of fan blade 1 by support 74 backs, the system of the attached fan blade 71 of this increase mainly is to be used in (when the distance H between blade shaft 3 and the substantially horizontal balance axis 2 equals zero) use when the blade shaft 3 of fan blade 1 just in time is in substantially horizontal balance axis 2 coaxial going up.Increase attached fan blade 71, it can rotate under the effect of wind-force by attached fan blade 71 when fan blade 1 is in state of equilibrium, thereby drive rotating disk 72 rotations, rotating disk 72 pulling backguys, backguy pulling fan blade bottom, thereby break the state of equilibrium of fan blade 1, make the whole system can proper functioning.Installing attached fan blade 71 another effects additional is to accelerate horizontally rotating of fan blade 1 when fan blade 1 is facingd the wind.Certainly, increase the system of attached fan blade 71, also can be used for distance H between blade shaft 3 and the substantially horizontal balance axis 2 greater than zero situation, at this moment, attached fan blade 71 can be accelerated the speed that horizontally rotates of fan blade 1.
See also Fig. 8, Fig. 8 is embodiment's perspective view of band torsion spring structure of the present invention.This embodiment improves on the basis of enforcement shown in Figure 1, it is to be provided with disc spring 8 on described blade shaft 3, and described disc spring 8 one ends are fixed on the blade shaft 3, and the other end of described disc spring 8 is against on described fan blade 1 one side, in the present embodiment, described disc spring 8 plays the effect of balancing weight 6.
See also Fig. 9, Fig. 9 is embodiment's perspective view of band wind direction anemoscope of the present invention and motor.Among this embodiment, described blade system can also comprise wind direction detector 9 and motor 10, and described wind direction detector 9 is according to wind direction, and control motor 10 rotates, and motor 10 drives fan blades 1 and rotates, and is vertical state when fan blade 1 is facingd the wind, and is the level of state when leeward.In this example, described wind direction detector 9 is arranged on the described blade shaft 3.Described motor 10 is arranged on fan blade 1 back side, and horizontally rotates by the gear teeth 101 drive fan blades 1.
Working principle of the present invention is when wind is arranged, because the area at fan blade two ends about in the of 1 is different, the wind-force that produces is different, this wind-force difference is during greater than the gravitational difference at blade shaft two ends, can make fan blade 1 is the central horizontal rotation with blade shaft 3, and wind-force is big more, and rotation angle is big more, up to parallel with wind direction near 90 degree, windage minimum at this moment.Be symmetrical in another fan blade 1 of rotor shaft 4, perpendicular to ground, produce maximum resistance because the restriction of the limiter 14 of fan blade 1 can't be rotated this moment, and it is poor that this moment, rotor shaft 4 both sides produced wind-force, and making fan blade 1 is the center rotation with rotor shaft 4.Vertical fan blade 1 along rotor shaft 4 rotation greater than 90 degree after since the limiter 14 of fan blade 1 be folk prescription to restriction, this moment, fan blade 1 horizontally rotated along blade shaft 3, reduced windage; The fan blade 1 of level along rotor shaft 4 revolve turn 90 degrees after, this moment fan blade 1 parallel with wind direction, two ends all do not have windage up and down, because the gravitational difference of fan blade 1, fan blade 1 horizontally rotate 90 degree, and be perpendicular to the ground, because the restriction of the limiter 14 of fan blade 1, this moment, fan blade produced maximum windage.What fan blade 1 did not stop like this horizontally rotates, is transferred to vertically by level, and by vertically transferring level to, resistance becomes maximum by minimum again, becomes minimum again by maximum, makes fan blade not stop rotation along rotor shaft 4, makes rotor shaft 4 drive generator 5 rotations, produces electric power.
Claims (9)
1. the blade system of a vertical axis aerogenerator, it is characterized in that: comprise at least two fan blades, above the substantially horizontal balance axis of every fan blade, be provided with blade shaft, it is poor that distance between described blade shaft and the substantially horizontal balance axis will satisfy the upper and lower power of blade shaft, make fan blade under windless condition, fan blade promptly transfers plumbness to by level under the effect of power difference, fan blade rotates along blade shaft under the wind state having; One end of blade shaft is fixedlyed connected with rotor shaft, fan blade and blade shaft flexibly connect, the face that keeps out the wind of fan blade and the axis of blade shaft are in same plane, be provided with on the blade shaft when being used to limit fan blade in plumbness, the limiter that can only rotate horizontally, described blade system also comprises attached blade, rotating disk, backguy and support, fixedly connected with plane on the described rotating disk in described attached blade lower end, described rotating disk lower plane is fixedlyed connected with described blade shaft, described backguy one end is fixed on the side of described rotating disk, and the other end of described backguy is fixedlyed connected with the one side of fan blade by behind the support.
2. the blade system of vertical axis aerogenerator according to claim 1, it is characterized in that: described fan blade comprises frame and is arranged on the interior face that keeps out the wind of frame, be provided with bearing on relative two of described frame vertical frames, described bearing is arranged on the described blade shaft.
3. the blade system of vertical axis aerogenerator according to claim 2, it is characterized in that: the described face material therefor that keeps out the wind is stuffy fibre cloth or stuffy nonwovens.
4. according to the blade system of claim 1,2 or 3 described vertical axis aerogenerators, it is characterized in that: above or below described blade shaft, be provided with balancing weight.
5. according to the blade system of claim 1,2 or 3 described vertical axis aerogenerators, it is characterized in that: be provided with disc spring on described blade shaft, described disc spring one end is fixed on the blade shaft, and the other end of described disc spring is against on the described fan blade one side.
6. according to the blade system of claim 1,2 or 3 described vertical axis aerogenerators, it is characterized in that: described limiter is straight shape or right angle type.
7. the blade system of vertical axis aerogenerator according to claim 1, it is characterized in that: described blade system also comprises wind direction detector and motor, described wind direction detector is according to wind direction, the control motor rotates, thereby driving fan blade rotates, and be vertical state when fan blade is facingd the wind, be the level of state when leeward.
8. the blade system of vertical axis aerogenerator according to claim 7, it is characterized in that: described wind direction detector is arranged on the described blade shaft.
9. the blade system of vertical axis aerogenerator according to claim 7 is characterized in that: described motor is arranged on the fan blade one side, and drives the fan blade rotation by the gear teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101389177A CN101886610B (en) | 2009-05-12 | 2009-05-12 | Blade system of vertical axis wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101389177A CN101886610B (en) | 2009-05-12 | 2009-05-12 | Blade system of vertical axis wind turbine |
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| Publication Number | Publication Date |
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| CN101886610A CN101886610A (en) | 2010-11-17 |
| CN101886610B true CN101886610B (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101389177A Expired - Fee Related CN101886610B (en) | 2009-05-12 | 2009-05-12 | Blade system of vertical axis wind turbine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996347A (en) * | 2011-08-14 | 2013-03-27 | 北京银万特科技有限公司 | Side-moment vane fluid energy generator |
| CN102996348A (en) * | 2011-08-14 | 2013-03-27 | 北京银万特科技有限公司 | Fluid-energy power generation system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2680892Y (en) * | 2003-06-22 | 2005-02-23 | 姚平 | Wind motor |
| CN101012805A (en) * | 2006-12-19 | 2007-08-08 | 上海海想自动控制技术有限公司 | Wind power apparatus and wind power generating system |
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2009
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2680892Y (en) * | 2003-06-22 | 2005-02-23 | 姚平 | Wind motor |
| CN101012805A (en) * | 2006-12-19 | 2007-08-08 | 上海海想自动控制技术有限公司 | Wind power apparatus and wind power generating system |
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| CN101886610A (en) | 2010-11-17 |
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