CN202991343U - Fan blade of vertical-axis wind turbine - Google Patents
Fan blade of vertical-axis wind turbine Download PDFInfo
- Publication number
- CN202991343U CN202991343U CN 201220633663 CN201220633663U CN202991343U CN 202991343 U CN202991343 U CN 202991343U CN 201220633663 CN201220633663 CN 201220633663 CN 201220633663 U CN201220633663 U CN 201220633663U CN 202991343 U CN202991343 U CN 202991343U
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- blade
- lower portion
- wing tip
- entity
- tail end
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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 utility model discloses a fan blade of a vertical-axis wind turbine. The fan blade is composed of an upper blade entity portion and a lower blade entity portion which mutually forms an attack angle, small wing tips and/or a small wing tip which extend/extends along the direction of a blade rotation center are/is arranged at the tail end of the upper blade entity portion and/or the tail end of the lower blade entity portion, the small wing tip is in a streamline form, the front edge of the small wing tip is arc-shaped, the rear edge of the small wing tip is a fillet tip, the front edge and the rear edge are in smooth transition, the rear edge is connected with the tail end of a blade entity, the maximum extension length is smaller than 10% of the length of a blade and larger than two times of the maximum thickness of a wing section at the top end of the upper blade entity portion, and the area of the front edge is larger than that of the rear edge. By means of the small wing tip, the influence of vortex drag forces of a wing tip at the top end of the blade is reduced, wind wheel output is increased, pneumatic torque generated by the upper blade entity portion is relatively increased, rotation speeds of the wind turbine are increased, output electric power is further increased, the purpose of increasing utilization of wind energy is achieved, and the whole appearance of the blade is attractive and smooth.
Description
Technical field
The utility model relates to a kind of fan blade, relates in particular to a kind of vertical axis aerogenerator fan blade.
Background technique
The vane of vertical shaft wind-driven generator citation form has four kinds at present: S type, ∮ type, the straight aerofoil profile of H, rotation aerofoil profile.The blade ubiquity of these forms that between blade and running shaft, connection set is loaded down with trivial details, blades installation is complicated, smooth not attractive in appearance, the deficiency such as wind energy utilization is low of profile.
The model utility content
The purpose of this utility model is to provide a kind of vertical axis aerogenerator fan blade of installing that blade is convenient and simple, profile is smooth and can improving wind energy utilization, solves the shortcoming that prior art exists.
The utility model adopts following technological scheme to realize:
A kind of vertical axis aerogenerator fan blade, this fan blade is made of mutual blade entity top and the blade otherwise solid lower portion that forms the angle of attack, it is characterized in that, the tail end on described blade entity top and/or the tail end of blade otherwise solid lower portion are provided with the wing tip winglet that extends to the blade rotary central direction.
Further, described wing tip winglet is arranged on blade entity top away from the tail end of blade otherwise solid lower portion, described wing tip winglet is streamline, the leading edge of wing tip winglet is circular-arc, and trailing edge is that fillet is most advanced and sophisticated, seamlessly transits between leading edge and trailing edge, trailing edge is connected with the tail end of blade entity, the maximum extended length of wing tip winglet is less than 10% of length of blade, and greater than 2 times of the top aerofoil profile maximum ga(u)ge on blade entity top, the leading edge area is greater than the trailing edge area.
Further, described blade entity top is connected upper connection plane and lower link arm with the blade otherwise solid lower portion, described upper connection is provided with connecting bolt on the plane, be provided with attachment hole on described lower link arm, fan blade is connected with the rotor of generator with lower link arm by upper connection plane and is used for transmitting wind-power.
Further, described upper connection Plane Installation is in the centre on blade entity top, and described lower link arm is arranged on the blade otherwise solid lower portion away from an end on blade entity top.
Further, the chord length of the setting-out aerofoil profile of described blade otherwise solid lower portion is diminishing from top to bottom, and the end of blade tail end is shrunk to streamline, and the position that blade tail end and generator are adjacent and the rotor profile of generator match.
Further, the chord length of the setting-out aerofoil profile of described blade otherwise solid lower portion is shortened by long from top to bottom, and the turning radius of the setting-out aerofoil profile of blade otherwise solid lower portion is shortened and is connected with generator amature by long from top to bottom.
Further, the chord length of the setting-out aerofoil profile on described blade entity top reduces along with the blade rotary radius and elongated, shortens along with the increase of blade rotary radius.
Further, described blade entity top and blade otherwise solid lower portion are a complete blade, and the turning radius of this blade is the variation tendency that is shortened by long from top to bottom, the turning radius of the setting-out aerofoil profile on described blade entity top be equate or from top to bottom by short elongated.
The useful technique effect that the utility model possesses is:
Blade entity top is connected upper connection plane and lower link arm, simple installation with the blade otherwise solid lower portion; Blade entity top also is provided with the wing tip winglet, reduced the impact of blade tip wing tip vortex drag, having increased wind wheel exerts oneself, the aerodynamic moment of blade entity top generation is increased relatively, generator speed rises, and then the output power increase, reached the purpose that improves wind energy utilization, and the blade integral beautiful shape is smooth.And improved the wind energy utilization of wind wheel.
Description of drawings
Fig. 1 is the normal axomometric drawing of vertical wind power generator fan blade.
Fig. 2 is the partial enlarged drawing of wing tip winglet in Fig. 1.
Fig. 3 is link arm and the link arm of blade otherwise solid lower portion and the partial enlarged drawing of blade tail end in Fig. 1.
Fig. 4 is the plan view of vertical wind power generator fan blade.
Fig. 5 is the rear view of vertical wind power generator fan blade.
Fig. 6 is the left view of vertical wind power generator fan blade.
Fig. 7 is the sectional view of blade pneumatic wing type.
Fig. 8 is the assembly structure schematic diagram of vertical wind power generator fan blade.
Fig. 9 is how much setting out method schematic diagram of aerodynamic configuration of vertical wind power generator fan blade.
Embodiment
By following description to embodiment; to more help public understanding the utility model; but can't the specific embodiment that the claimant is given be considered as the restriction to technical solutions of the utility model, any definition to parts or technical characteristics change and/or to overall structure do form and immaterial conversion all should be considered as the protection domain that the technical solution of the utility model limits.
As extremely shown in Figure 9 in Fig. 1, vertical axis aerogenerator fan blade in the present embodiment is made of mutual blade entity top and the blade otherwise solid lower portion that forms the angle of attack, and the tail end on blade entity top 4 and/or the tail end of blade otherwise solid lower portion 5 are provided with the wing tip winglet 1 that extends to the blade rotary central direction.
Wing tip winglet 1 is streamline, the leading edge of wing tip winglet 1 is circular-arc, trailing edge is that fillet is most advanced and sophisticated, seamlessly transit between leading edge and trailing edge, trailing edge is connected with blade entity top 4, the maximum extended length of wing tip winglet 1 is less than 10% of length of blade, and greater than 2 times of the top aerofoil profile maximum ga(u)ge on blade entity top 4, the leading edge area is greater than the trailing edge area.Are connected with the blade otherwise solid lower portion and are respectively arranged with upper connection plane 5 and lower link arm 8 in blade entity top 4, described upper connection plane 5 is provided with connecting bolt 2 and connecting bolt 3, have attachment hole 7 and attachment hole 10 on lower link arm 8, upper connection plane 5 is connected with the rotor of generator by inserting bolt with lower link arm 8 and is used for transmitting wind-power.Upper connection plane 5 is arranged on the centre on blade entity top 4, and lower link arm 8 is arranged on blade otherwise solid lower portion 6 away from an end on blade entity top 4, and the lower end of lower link arm 8 is blade tail ends 9.When wind-force acted on the blade of wind-driven generator, wing tip winglet 1 had the effect in the wing tip whirlpool of the upper end of reducing blade entity top 4, thereby reduces resistance.The aerodynamic moment that blade entity top 4 produces increases relatively, and generator speed rises, and then output power increases, and has improved the wind energy utilization on blade entity top 4.The position of upper connection plane 5 and connecting bolt 2 and connecting bolt 3, and attachment hole 7 and attachment hole 10 are all pre-designed in the position of lower link arm 8, be used for jointly guaranteeing that the angle of attack of blade entity top 4 and blade otherwise solid lower portion 6 is several angle, when wind-force acts on blade entity top 4 and blade otherwise solid lower portion 6, can produce peak torque, thereby make generator output maximum power.
The chord length of the setting-out aerofoil profile of blade otherwise solid lower portion 6 is diminishing from top to bottom, and the end of blade tail end 9 is shrunk to streamlined, and the position that blade tail end 9 is adjacent with generator and the rotor profile of generator match.The chord length of the setting-out aerofoil profile of blade otherwise solid lower portion 6 is shortened by long from top to bottom.And the turning radius of the setting-out aerofoil profile of blade otherwise solid lower portion 6 is shortened and is connected with generator amature by long from top to bottom.The chord length of the setting-out aerofoil profile on blade entity top 4 is elongated along with the minimizing of blade rotary radius, shortens along with the increase of blade rotary radius.Blade entity top 4 and blade otherwise solid lower portion 6 are a complete blade, and the turning radius of this blade is the variation tendency that is shortened by long from top to bottom, the turning radius of the setting-out aerofoil profile on blade entity top 4 be equate or from top to bottom by short elongated.Blade entity top 4 and blade otherwise solid lower portion 6 are that variable cross section or uniform section distortion change by the cross section of lower end to upper end, and be all aerofoil profile at the arbitrary section parallel with horizontal plane, on this arbitrary section, the mid point of the string of these aerofoil profiles is on a circle, and the angle Φ of the line in the center of circle of the mid point of these aerofoil profile strings and this circle is 96 °.Blade entity top 4 is obtained by the rotation setting-out by a kind of pneumatic wing type, the visible patent of setting out method " a kind of vertical shaft pitch-controlled wind-driven generator fan blade " (patent No.: 201120047812.3).Blade otherwise solid lower portion 6 is to be obtained by one or more pneumatic wing type setting-out.Blade entity top 4 and blade otherwise solid lower portion 6 are that the variable cross section distortion changes by lower end to upper end, all aerofoil profile at the arbitrary section parallel with horizontal plane, and the mid point of the string of these aerofoil profiles is on a circle, the angle Φ of the line in the center of circle of the mid point of these aerofoil profile strings and this circle is 96 °, as shown in Figure 9.Aerofoil profile is to guarantee that blade entity top 4 and blade otherwise solid lower portion 6 have good aeroperformance, namely under the effect of wind-force, rotates with peak torque around blade entity top 4 and the common central rotating shaft of blade otherwise solid lower portion 6.Here the blade pneumatic wing type of mentioning can be the cross section aerofoil profile NACA0018 for example of the aircraft wing, NACA0015, and NACA0012, NACA4412 etc. can be also the pneumatic equipment blades made special airfoil that obtains by experiment.
Certainly; the utility model can also have other various embodiments; in the situation that do not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (8)
1. vertical axis aerogenerator fan blade, this fan blade is made of mutual blade entity top and the blade otherwise solid lower portion that forms the angle of attack, it is characterized in that, the tail end on described blade entity top and/or the tail end of blade otherwise solid lower portion are provided with the wing tip winglet that extends to the blade rotary central direction.
2. vertical axis aerogenerator fan blade according to claim 1, it is characterized in that, described wing tip winglet is arranged on blade entity top away from the tail end of blade otherwise solid lower portion, described wing tip winglet is streamline, the leading edge of wing tip winglet is circular-arc, trailing edge is that fillet is most advanced and sophisticated, seamlessly transit between leading edge and trailing edge, trailing edge is connected with the tail end of blade entity, the maximum extended length of wing tip winglet is less than 10% of length of blade, greater than 2 times of the top aerofoil profile maximum ga(u)ge on blade entity top, the leading edge area is greater than the trailing edge area.
3. vertical axis aerogenerator fan blade according to claim 1 and 2, it is characterized in that, described blade entity top is connected upper connection plane and lower link arm with the blade otherwise solid lower portion, described upper connection is provided with connecting bolt on the plane, be provided with attachment hole on described lower link arm, fan blade is connected with the rotor of generator with lower link arm by upper connection plane and is used for transmitting wind-power.
4. vertical axis aerogenerator fan blade according to claim 3, is characterized in that, described upper connection Plane Installation is in the centre on blade entity top, and described lower link arm is arranged on the blade otherwise solid lower portion away from an end on blade entity top.
5. vertical axis aerogenerator fan blade according to claim 1 and 2, it is characterized in that, the chord length of the setting-out aerofoil profile of described blade otherwise solid lower portion is diminishing from top to bottom, the end of blade tail end is shrunk to streamline, and the position that blade tail end and generator are adjacent and the rotor profile of generator match.
6. vertical axis aerogenerator fan blade according to claim 5, it is characterized in that, the chord length of the setting-out aerofoil profile of described blade otherwise solid lower portion is shortened by long from top to bottom, and the turning radius of the setting-out aerofoil profile of blade otherwise solid lower portion is shortened and is connected with generator amature by long from top to bottom.
7. vertical axis aerogenerator fan blade according to claim 5, is characterized in that, the chord length of the setting-out aerofoil profile on described blade entity top reduces along with the blade rotary radius and elongated, shortens along with the increase of blade rotary radius.
8. vertical axis aerogenerator fan blade according to claim 1 and 2, it is characterized in that, described blade entity top and blade otherwise solid lower portion are a complete blade, and the turning radius of this blade is the variation tendency that is shortened by long from top to bottom, the turning radius of the setting-out aerofoil profile on described blade entity top be equate or from top to bottom by short elongated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633663 CN202991343U (en) | 2012-11-27 | 2012-11-27 | Fan blade of vertical-axis wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220633663 CN202991343U (en) | 2012-11-27 | 2012-11-27 | Fan blade of vertical-axis wind turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202991343U true CN202991343U (en) | 2013-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220633663 Expired - Fee Related CN202991343U (en) | 2012-11-27 | 2012-11-27 | Fan blade of vertical-axis wind turbine |
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| CN (1) | CN202991343U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106574603A (en) * | 2014-08-05 | 2017-04-19 | 瑞安·丘奇 | Structure with rigid winglet adapted to traverse a fluid environment |
| CN107407255A (en) * | 2015-03-16 | 2017-11-28 | Ntn株式会社 | Impeller and the generating electricity by natural energy device with impeller |
-
2012
- 2012-11-27 CN CN 201220633663 patent/CN202991343U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106574603A (en) * | 2014-08-05 | 2017-04-19 | 瑞安·丘奇 | Structure with rigid winglet adapted to traverse a fluid environment |
| CN106574603B (en) * | 2014-08-05 | 2019-12-24 | 瑞安·丘奇 | Structure with rigid winglets suitable for traversing fluid environments |
| CN107407255A (en) * | 2015-03-16 | 2017-11-28 | Ntn株式会社 | Impeller and the generating electricity by natural energy device with impeller |
| CN107407255B (en) * | 2015-03-16 | 2019-07-26 | Ntn株式会社 | Impeller and generating electricity by natural energy device with impeller |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Song Yitong Document name: Notification of Passing Examination on Formalities |
|
| DD01 | Delivery of document by public notice |
Addressee: Song Yitong Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice |
Addressee: Song Yitong Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20151127 |
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| EXPY | Termination of patent right or utility model |