CN202468156U - Blade of vertical axis wind-driven generator - Google Patents
Blade of vertical axis wind-driven generator Download PDFInfo
- Publication number
- CN202468156U CN202468156U CN 201220038170 CN201220038170U CN202468156U CN 202468156 U CN202468156 U CN 202468156U CN 201220038170 CN201220038170 CN 201220038170 CN 201220038170 U CN201220038170 U CN 201220038170U CN 202468156 U CN202468156 U CN 202468156U
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- CN
- China
- Prior art keywords
- blade
- section
- bent
- straight
- driven generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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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
Abstract
The utility model discloses a blade of a vertical axis wind-driven generator. The blade is a blade working vertically; the cross section of the blade is in an asymmetrical aerofoil shape; the bending of the outer side face of the asymmetrical aerofoil shape is more than that of an inner side face of the asymmetrical aerofoil shape; flat-straight blade sections are arranged at the upper part and the lower part of the blade; a bent blade section which is bent in an arc shape towards an outer side is arranged at the middle part of the blade; further, the thickness of the bent blade section of the blade is decreased progressively from a middle to an upper end and a lower end; the bent blade section is connected with the flat-straight blade sections at the upper part and the lower part in a smooth transition way to form a flat-straight and bent combinative blade; the flat-straight blade sections are arranged at the upper part and the lower part of the flat-straight and bent combinative blade; the bent blade section is arranged at the middle part of the flat-straight and bent combinative blade; a wind choking cavity is arranged at the middle part of the blade; and an opening of the air choking cavity is positioned at the inner side of a back edge. According to the technical scheme of the utility model, the front edge and the back edge of the middle part of the blade are respectively protruded outwards in the arc shape to form the blades which are not equal in width, and the blades are arranged into a hollow structure. Compared with a conventional blade of the vertical axis wind-driven generator, the blade of the vertical axis wind-driven generator has a bigger torque, a higher tip speed ratio, a higher wind energy conversion rate and a favorable startup performance.
Description
Technical field
The utility model relates to wind-driven generator, is specifically related to a kind of vane of vertical shaft wind-driven generator.
Background technique
At present, vane of vertical shaft wind-driven generator mainly contains resistance type and lift-type, and the resistance type blade is the resistance acting that utilizes air stream on blade, to produce, and have bigger torque and good startability, but tip speed ratio and wind energy transformation rate is lower.The lift-type blade is the pressure difference acting that utilizes air stream on blade, to produce, and has higher tip speed ratio and wind energy transformation rate, but torque is difficult to start for a short time.It is the design of aircraft wing that the disclosed lift-type blade of existing technology has mostly followed the aviation aerofoil profile, and the relative air of aircraft wing is an active body, and air is by kinetoplast, and the relative velocity of aircraft wing and air is higher in addition.The blade working system that wind-driven generator is used is just in time opposite with the work system of aircraft wing, and promptly air is an active body, and blade is by kinetoplast, and the relative velocity of blade and air is lower.So the blade of aviation Airfoil Design can not well satisfy the requirement of wind-driven generator.
Summary of the invention
The purpose of the utility model is a kind of bigger torque that has to be provided to the problems referred to above, the vane of vertical shaft wind-driven generator of higher tip speed ratio, wind energy transformation rate and good startability.
The technological scheme that realizes above-mentioned purpose is: a kind of vane of vertical shaft wind-driven generator, and it puts the blade of work for perpendicular, and the cross section of this blade is the asymmetric air-foil of outer side surface camber greater than the inner side surface camber; The upper and lower of said blade is the straight blades section; The curved vane section of middle part for being convexly curved laterally; And the thickness of its curved vane section is successively decreased and said upper and lower straight blades section smooth transition is joined to two ends up and down by the centre, and constituting the upper and lower is that straight blades section, middle part are the straight and crooked combined blade of curved vane section; Be provided with opening at the middle part of said blade and be positioned at the inboard choke chamber of trailing edge.
The leading edge at said blade middle part and trailing edge be curved outside protrusion respectively, forms the blade that does not wait width.
Described blade is arranged to hollow structure.
The utility model agent structure adopts asymmetric air-foil, and can better adapt to the air is that active body, blade are by the work system of kinetoplast, the working environment of more effective adaptation nature wind speed; Adopt straight and crooked combined blade, blade is worked under different turning radius, can better adapt to the requirement that wind speed changes; The choke chamber design of blade middle part trailing edge inside makes blade tool drag characteristic, is convenient to start, and tool energy-storage function simultaneously can effectively be avoided the stepping phenomenon of wind-driven generator.
The utility model adopts the middle wide and crooked laterally design of blade, can better collect wind energy.
The utility model adopts hollow structure, helps reducing the weight and the cost of production of blade, and minimizing simultaneously produces the rotation safety problem that big inertia brings because of big quality.
Description of drawings
Fig. 1 is this vane of vertical shaft wind-driven generator structural representation;
Fig. 2 is the plan view of this vane of vertical shaft wind-driven generator;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the A-A profile of Fig. 3;
Fig. 5 is the B-B profile of Fig. 3.
Embodiment
Describe in conjunction with the embodiment of accompanying drawing the utility model.
Like accompanying drawing, this vane of vertical shaft wind-driven generator is put the blade of installment work for perpendicular, and this blade is the asymmetric air-foil of outer side surface camber greater than the inner side surface camber.The top 1 and the bottom 2 of this blade are the straight blades section; The curved vane section of middle part 3 for being convexly curved laterally; The thickness of its curved vane section is successively decreased and upper and lower straight blades section smooth transition is joined to two ends up and down by the centre, and constituting the upper and lower is that straight blades section, middle part are the straight and crooked combined blade of curved vane section.Be provided with choke chamber 4 at the middle part of blade, the opening in this choke chamber 4 is lip, is positioned at the vane trailing edge inboard, and cavity is shunk to the intrados transition by opening gradually, is triangular cavity roughly.
The leading edge at this vane of vertical shaft wind-driven generator middle part and trailing edge be curved outside protrusion respectively, forms the blade that does not wait width.
The blade of the utility model is arranged to hollow structure.
Claims (3)
1. a vane of vertical shaft wind-driven generator is put the blade of work for perpendicular, and it is characterized in that: the cross section of this blade is the asymmetric air-foil of outer side surface camber greater than the inner side surface camber; The upper and lower of said blade is the straight blades section; The curved vane section of middle part for being convexly curved laterally; And the thickness of its curved vane section is successively decreased and described upper and lower straight blades section smooth transition is joined to two ends up and down by the centre, and constituting the upper and lower is that straight blades section, middle part are the straight and crooked combined blade of curved vane section; Be provided with opening at the middle part of said blade and be positioned at the inboard choke chamber of trailing edge.
2. vane of vertical shaft wind-driven generator according to claim 1 is characterized in that: the leading edge at said blade middle part and trailing edge be curved outside protrusion respectively, forms the blade that does not wait width.
3. vane of vertical shaft wind-driven generator according to claim 1 and 2 is characterized in that: described blade is arranged to hollow structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220038170 CN202468156U (en) | 2012-02-07 | 2012-02-07 | Blade of vertical axis wind-driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220038170 CN202468156U (en) | 2012-02-07 | 2012-02-07 | Blade of vertical axis wind-driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202468156U true CN202468156U (en) | 2012-10-03 |
Family
ID=46916317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220038170 Withdrawn - After Issue CN202468156U (en) | 2012-02-07 | 2012-02-07 | Blade of vertical axis wind-driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202468156U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562442A (en) * | 2012-02-07 | 2012-07-11 | 秦皇岛风日和科技有限公司 | Blade of vertical-axis wind turbine |
-
2012
- 2012-02-07 CN CN 201220038170 patent/CN202468156U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562442A (en) * | 2012-02-07 | 2012-07-11 | 秦皇岛风日和科技有限公司 | Blade of vertical-axis wind turbine |
| CN102562442B (en) * | 2012-02-07 | 2015-09-16 | 秦皇岛风日和科技有限公司 | Vane of vertical shaft wind-driven generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121003 Effective date of abandoning: 20150916 |
|
| RGAV | Abandon patent right to avoid regrant |