CN102135067A - Circumferential inhaul cable structure of vertical axis wind turbine - Google Patents
Circumferential inhaul cable structure of vertical axis wind turbine Download PDFInfo
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- CN102135067A CN102135067A CN2011100495301A CN201110049530A CN102135067A CN 102135067 A CN102135067 A CN 102135067A CN 2011100495301 A CN2011100495301 A CN 2011100495301A CN 201110049530 A CN201110049530 A CN 201110049530A CN 102135067 A CN102135067 A CN 102135067A
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- circumferential
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- strut
- flexible member
- vertical axis
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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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Abstract
The invention discloses a circumferential inhaul cable structure of a vertical axis wind turbine. The wind turbine comprises a tower column and a wind wheel, wherein the wind wheel comprises a supporting wheel and blades as well as an inhaul cable, the supporting wheel is composed of a plurality of supporting bars, the blades are connected with the supporting bars; and the inhaul cable is respectively connected with two adjacent blades. In the invention, the inhaul cable structure is utilized to connect all the blades together, position change between adjacent blades is limited, and circumferential joggling of the blades in a rotating process is effectively prevented, thus torques provided for the turbine by all the blades are uniform and the service life of the turbine is prolonged. The inventor provides an optimal connection site of the inhaul cable and the blades, the stability of the connection site is the best, and the pneumatic characteristic of the wind wheel is not influenced. Compared with a rigid supporting wheel composed of rigid connection supporting bars in the prior art, the structure is greatly simplified, and the pneumatic characteristic of the wind wheel is not influenced; besides, the wind power coefficient can be effectively improved, thus the structure disclosed by the invention has good application prospect and market prospect.
Description
Technical field
The present invention relates to a kind of vertical axis aerogenerator, especially a kind of circumferential stayed structure of vertical axis aerogenerator.
Background technique
Vertical axis aerogenerator generally comprises king-post, wind wheel and generator, generator is arranged on the described king-post, and described wind wheel comprises supporting wheel and blade, and supporting wheel is made up of some struts, blade is connected with this strut, and strut is connected with the rotating component of generator.When blade rotates under the wind-force effect since wind direction and wind speed etc. at various height, different positions is very different, blade suffered driving torque when diverse location also is different.When each strut of support blade is separate the setting each other, can cause following problem to take place:
1) blade produces circumferentially shake;
2) driving torque of wind wheel integral body vibration wave amplitude is big, generator and strut joint discontinuity;
3) strut load wave amplitude is big, reduces the fatigue life of wind wheel, strut and generator.
Solution conventional in the small-sized wind power generator is that each strut is rigidly connected, and forms the supporting wheel of a rigidity, and very little wind-driven generator then generally partly addresses the above problem with the way of strengthening the strut rigidity.
But, for large-scale wind driven generator, this conventional way is not only uneconomical, and because the rigidity of raising strut or composition rigid support wheel make that the rotary inertia of wind wheel increases, aerodynamic characteristic degenerates, cause generating efficiency to reduce greatly, even can cause the situation that at all can't realize on the structure.
Summary of the invention
The objective of the invention is to improve prior art problems, a kind of circumferential stayed structure of vertical axis aerogenerator is provided, its can be simply with each independently blade be linked to be a complete wind wheel, it effectively prevents the blade shake, and makes each strut drive the moment of torsion homogenization of generator.
To achieve these goals, technological scheme of the present invention is:
A kind of circumferential stayed structure of vertical axis aerogenerator, described wind-driven generator wherein comprises king-post, wind wheel and generator, described wind wheel comprises supporting wheel and blade, a described supporting wheel comprises some struts, described strut is disposed radially, one end of each strut is circumferentially constituting supporting wheel on the uniform described generator outboard rotor that is fixed on the described king-post, and described blade is fixedlyed connected with the other end of described strut; Described circumferential stayed structure comprises some flexible members, every described flexible member places between adjacent two the described blades and/or strut of described wind wheel, the two ends of flexible member are connected with blade and/or strut on the wind wheel, circumferential formation one sealing flexible member ring at described wind wheel makes all described blade and/or strut couple together.
Described flexible member at the described sealing flexible member ring that circumferentially forms preferably in a horizontal plane.
A plurality of such sealing flexible member rings can be set in the horizontal plane of different heights, and the described sealing flexible member ring on the promptly described wind wheel is provided with a plurality of, on different horizontal planes.
Described wind wheel generally can comprise two described supporting wheels up and down, and two struts connected described king-post about promptly a described blade pass was crossed.And drive two generator operations.Then between per two struts on two supporting wheels, described flexible member can be set all and form described sealing flexible member ring.
Can also comprise rack wheel on the described wind wheel, it comprises some cradling pieces, one end of each this cradling piece connects the outer ring of a bearing, and the other end is connected with a described blade, and the bearing outer ring of described rack wheel is set on the inner ring of this bearing that described king-post is provided with fixing.Described sealing flexible member ring also can be set on this rack wheel.
Described flexible member can be a drag-line, is preferably cable wire.
The described tie point of described flexible member and described wind wheel can be on described blade, or on described strut.
This tie point is being the best on the promptly main fulcrum in the joint of described strut and described blade, so both can eliminate blade because of circumferentially connecting the stress that adds, also can effectively prevent the circumferential swing of blade, also the moment of torsion homogenization to generator that each blade can be produced.
In the time of near sealing flexible member ring is arranged on the strut middle part, not only blade still has bigger swing, and the tie point place is stressed big, need special the reinforcement, and general strut and the promptly main fulcrum in blade joint place itself are just enough strong, connect flexible member at this place and need not to be provided with in addition reinforced structure again.
When the blade overlength or when the supporting wheel spacing is big up and down, also can connect described flexible member and form circumferential closed loop at the blade place in addition, Support Position of described strut and described blade.When sealing flexible member ring was set directly on the blade, not only blade needed in the joint to strengthen, and circumferentially cable wire can produce an additional restraining force to blade, and the Intensity Design of blade itself also must be considered this point.
Invention thinking of the present invention is: after drag-line circumferentially surrounds a week, make originally separate blade and strut, utilize the cable wire of circumferentially sealing or the connecting ring of other flexible member, constitute the wind wheel of an integral body.This circumferential linkage structure makes the variation of each blade pitgh just be limited in the tensile buckling scope of drag-line.When certain two adjacent blade pitgh has the trend of diminishing, must have other adjacent blades spacing to increase, the power transmission by circumferential cable wire just can retrain the trend that its spacing diminishes.The circumferentially power transmission of drag-line, but homogenization impeller moment of torsion also.Blade is when diverse location, the wind moment of torsion that drives the generator rotation varies, and the effect that the blade in some position is subjected to wind moment can produce the resisting moment that stops wind wheel to rotate, after adopting circumferential drag-line, driving torque is big, blade and the strut that is attached thereto can drive driving torque little or driving torque be the blade strut of bearing, can make each strut in the whole wind wheel be delivered to the moment of torsion homogenization of generator like this, make stability of rotationization.Because at the drag-line that circumferentially is provided with, not only its cross section is little, and is the wake flow direction that produces substantially, therefore can not influence the aerodynamic characteristic of blade basically, so can not influence the generating efficiency of wind-driven generator when blade rotation.
Why must adopt cable wire or other flexible member to connect, and can not connect with rigid member, be because in a closed loop, and different positions has tension and two kinds of situations of pressurized, and unstable failure easily takes place when pressurized rigid member.
Described sealing flexible member ring is cable wire or other flexible member, its intensity must be able to be born the maximum tangential force of blade generation and the difference of minimum tangential force, when circumferential tie point is arranged on strut inboard (far away from blade), also must consider the enlarge-effect that equalising torque causes.
Described flexible member pretightening force stretching substantially being as the criterion when installing.Pretightening force is advisable about about 100N～800N.The flexible member pretightening force is too small, and tractive is loose excessively, is difficult to play the effect of circumferential antihunting and driving moment homogenization, and pretightening force is excessive, the tractive tension,, then excessive to the additional stress of strut or blade, the destruction that easily causes region of interest.
The circumferential stayed structure of vertical axis aerogenerator provided by the invention, by the flexible member ring of sealing is set on wind wheel, original relatively independent each blade and strut linked into an integrated entity, can prevent effectively that blade from circumferentially shaking, improve the exercise performance and the stressing conditions of wind wheel, and make each strut drive the moment of torsion homogenization of generator, significantly improve generating efficiency, and it is simple in structure, easy for installation, and aerodynamic characteristic is not had influence substantially.
Description of drawings
Fig. 1 is the structural representation of the circumferential stayed structure of vertical axis aerogenerator provided by the invention in wind-driven generator upper blade and the setting of strut joint.
Fig. 2 is the structural representation that the circumferential stayed structure of vertical axis aerogenerator provided by the invention is provided with on strut.
Fig. 3 is the structural representation that the circumferential stayed structure of vertical axis aerogenerator provided by the invention is provided with on blade.
Embodiment
As shown in Figure 1, a kind of circumferential stayed structure of vertical axis aerogenerator, described wind-driven generator wherein comprises king-post 1, wind wheel and generator, described wind wheel comprises supporting wheel and blade 2, described supporting wheel comprises some struts 3, described strut 3 is disposed radially and places in the same horizontal plane, and the inner of each strut 3 is circumferential uniform being fixed on the described generator outboard rotor 4, and described blade 2 is fixedlyed connected with the outer end of described strut 3; Described strut is installed on the generator outboard rotor 4 on the described king-post 1 and constitutes supporting wheel; Described prime minister's stayed structure comprises that some flexible members are that the steel drag-line is a cable wire 5, every cable wire 5 places between adjacent two the described blades and/or strut of described wind wheel, the two ends of flexible member are connected on described strut 3 and the promptly main fulcrum A in the joint of described blade 2, circumferential formation one sealing drag-line ring at described wind wheel makes all described blade and strut couple together.
As shown in Figure 1, described wind wheel comprises two described supporting wheels up and down, and promptly a described blade 2 is by connecting king-post 1 for two 3 up and down.And drive two generator operations.
Embodiment as shown in Figure 1 is a most preferred embodiment, utilize stayed structure that each blade is circumferentially linked together, the variation of position between the restriction adjacent blades, effectively prevented the circumferential shake of blade in rotary course, make each blade offer the moment of torsion homogenization of generator, prolonged the working life of generator simultaneously.Embodiment 1 provides cable wire to be connected the site with the best of blade, and it is best that this connects site stability, and does not influence the pneumatic property of wind wheel, and main fulcrum place itself just has enough strong, connects drag-line, the design that need not gain in strength extraly at this.Form the rigid support wheel and compare with the prior art strut that is rigidly connected, both simplified structures greatly, and do not influence the wind wheel aerodynamic characteristic, and can effectively improve the wind power factor, therefore, have good application prospects and market prospects.
Can on the main fulcrum A on two supporting wheels up and down, all connect drag-line, form two sealing drag-line rings up and down.
Be illustrated in figure 2 as the embodiment of another circumferential stayed structure, be that with embodiment 1 distinctive points drag-line is connected on the strut 3.In the time of near sealing flexible member ring is arranged on the strut middle part, not only blade still has bigger swing, and the tie point place is stressed big, needs to strengthen especially.
Be illustrated in figure 3 as the embodiment of another circumferential stayed structure, be that with embodiment 1 distinctive points drag-line is connected on the blade 2.When sealing flexible member ring was set directly on the blade, not only blade needed in the joint to strengthen, and circumferentially cable wire can produce an additional restraining force to blade, and the Intensity Design of blade itself also must be considered this point.
When the blade overlength or when the supporting wheel spacing is big up and down, also can be at the blade place beyond the Support Position of described strut and described blade, connect described flexible member and increase more circumferential closed loop.
As two embodiments that Fig. 2, Fig. 3 provide, the tie point of drag-line is not arranged on the optimum position, but such structure also can get a desired effect, and is within the application's protection domain yet.
Above-mentioned three kinds of structures also can stack combinations be used.
Described drag-line sealing flexible member ring is cable wire or other flexible member, its intensity must be able to be born the maximum tangential force of blade generation and the difference of minimum tangential force, when circumferential tie point is arranged on strut inboard (far away from blade), also must consider the enlarge-effect that equalising torque causes.
Described drag-line pretightening force stretching substantially being as the criterion when installing, pretightening force is about about 100N～800N.Cross pine, then be difficult to play the effect of circumferential antihunting and driving moment homogenization, tension, then excessive to the additional stress of strut or blade, the destruction that easily causes region of interest.
Claims (8)
1. the circumferential stayed structure of a vertical axis aerogenerator, described wind-driven generator wherein comprises king-post, wind wheel and generator, described wind wheel comprises supporting wheel and blade, a described supporting wheel comprises some struts, described strut is disposed radially, one end of each strut is circumferentially constituting supporting wheel on the uniform described generator outboard rotor that is fixed on the described king-post, and described blade is fixedlyed connected with the other end of described strut; It is characterized in that: described circumferential stayed structure comprises some flexible members, every described flexible member places between adjacent two the described blades and/or strut of described wind wheel, the two ends of described flexible member are connected with blade and/or strut on the described wind wheel, circumferential formation one sealing flexible member ring at described wind wheel makes all described blade and/or strut couple together.
2. the circumferential stayed structure of vertical axis aerogenerator according to claim 1 is characterized in that: described flexible member at the described sealing flexible member ring that circumferentially forms in a horizontal plane.
3. the circumferential stayed structure of vertical axis aerogenerator according to claim 2, it is characterized in that: the described sealing flexible member ring on the described wind wheel is provided with a plurality of, on different horizontal planes.
4. according to the circumferential stayed structure of claim 1 or 2 or 3 described vertical axis aerogenerators, it is characterized in that: the tie point of described flexible member and described wind wheel is on the promptly main fulcrum in the joint of described strut and described blade.
5. according to the circumferential stayed structure of claim 1 or 2 or 3 described vertical axis aerogenerators, it is characterized in that: the blade place beyond the Support Position of described strut and described blade connects one or more described flexible member again and forms circumferential closed loop.
6. the circumferential stayed structure of vertical axis aerogenerator according to claim 4 is characterized in that: the blade place beyond the Support Position of described strut and described blade connects one or more described flexible member again and forms circumferential closed loop.
7. according to the circumferential stayed structure of claim 1 or 2 or 3 described vertical axis aerogenerators, it is characterized in that: the pretightening force of described flexible member stretching being as the criterion when installing.
8. according to the circumferential stayed structure of claim 1 or 2 or 3 described vertical axis aerogenerators, it is characterized in that: the pretightening force of described flexible member is 100N～800N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100495301A CN102135067A (en) | 2011-03-01 | 2011-03-01 | Circumferential inhaul cable structure of vertical axis wind turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100495301A CN102135067A (en) | 2011-03-01 | 2011-03-01 | Circumferential inhaul cable structure of vertical axis wind turbine |
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| CN102135067A true CN102135067A (en) | 2011-07-27 |
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| CN2011100495301A Pending CN102135067A (en) | 2011-03-01 | 2011-03-01 | Circumferential inhaul cable structure of vertical axis wind turbine |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050554A (en) * | 2015-08-26 | 2016-10-26 | 陈忠维 | Vertical axis wind turbine |
| CN106505789A (en) * | 2016-12-20 | 2017-03-15 | 田曙光 | Electromotor lever and electromotor |
| CN106499579A (en) * | 2015-09-07 | 2017-03-15 | 江苏中创华俊新能源设备科技股份有限公司 | In a kind of wind-driven generator using freewheel clutch transmitting torque wind wheel structure |
| CN106523269A (en) * | 2015-09-07 | 2017-03-22 | 江苏中创华俊新能源设备科技股份有限公司 | Combined type vertical-axis wind turbine |
| CN107355340A (en) * | 2017-07-27 | 2017-11-17 | 华北电力大学 | A kind of floating type vertical axis aerogenerator group in high-altitude |
Citations (5)
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| FR2668205A1 (en) * | 1990-10-17 | 1992-04-24 | Lagut Denis | Wind machine with two flaps and magnetic stops |
| US7258527B2 (en) * | 2004-12-28 | 2007-08-21 | Chi-Kuang Shih | Vertical axis wind engine |
| CN201433854Y (en) * | 2009-05-26 | 2010-03-31 | 中国海洋大学 | Helical flexible blade turbine |
| CN101806284A (en) * | 2009-02-18 | 2010-08-18 | 张金锋 | Wind driven generator |
| CN201963475U (en) * | 2011-03-01 | 2011-09-07 | 国能风力发电有限公司 | Circumferential pulling rope structure for vertical axis wind power generator |
-
2011
- 2011-03-01 CN CN2011100495301A patent/CN102135067A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2668205A1 (en) * | 1990-10-17 | 1992-04-24 | Lagut Denis | Wind machine with two flaps and magnetic stops |
| US7258527B2 (en) * | 2004-12-28 | 2007-08-21 | Chi-Kuang Shih | Vertical axis wind engine |
| CN101806284A (en) * | 2009-02-18 | 2010-08-18 | 张金锋 | Wind driven generator |
| CN201433854Y (en) * | 2009-05-26 | 2010-03-31 | 中国海洋大学 | Helical flexible blade turbine |
| CN201963475U (en) * | 2011-03-01 | 2011-09-07 | 国能风力发电有限公司 | Circumferential pulling rope structure for vertical axis wind power generator |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050554A (en) * | 2015-08-26 | 2016-10-26 | 陈忠维 | Vertical axis wind turbine |
| CN106050554B (en) * | 2015-08-26 | 2019-06-14 | 陈忠维 | A kind of vertical axis windmill |
| CN106499579A (en) * | 2015-09-07 | 2017-03-15 | 江苏中创华俊新能源设备科技股份有限公司 | In a kind of wind-driven generator using freewheel clutch transmitting torque wind wheel structure |
| CN106523269A (en) * | 2015-09-07 | 2017-03-22 | 江苏中创华俊新能源设备科技股份有限公司 | Combined type vertical-axis wind turbine |
| CN106505789A (en) * | 2016-12-20 | 2017-03-15 | 田曙光 | Electromotor lever and electromotor |
| CN107355340A (en) * | 2017-07-27 | 2017-11-17 | 华北电力大学 | A kind of floating type vertical axis aerogenerator group in high-altitude |
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Application publication date: 20110727 |