CN2869370Y - Wind wheel blade for small-sized wind mill generator - Google Patents
Wind wheel blade for small-sized wind mill generator Download PDFInfo
- Publication number
- CN2869370Y CN2869370Y CNU2006200540852U CN200620054085U CN2869370Y CN 2869370 Y CN2869370 Y CN 2869370Y CN U2006200540852 U CNU2006200540852 U CN U2006200540852U CN 200620054085 U CN200620054085 U CN 200620054085U CN 2869370 Y CN2869370 Y CN 2869370Y
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- CN
- China
- Prior art keywords
- section
- vane
- working area
- blade
- chord length
- 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.)
- Expired - Fee Related
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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 utility model relates to an impeller vane used on small wind power generator, characterized in that the whole vane comprises three working area: a vane stem working area, an inner section working area and an outer section working area, wherein the two ends of the outer section working area are vane tip, which type is NACA4410, and vane root, which type is NACA4412; the vane twists with reference from the cross section of the vane root to the cross section of the vane tip; the chord length of the cross section linear decreases and the figure of the vane has a cone. The total length of the vane is 656.25mm, on which the area 0 to 63.5mm is the vane stem working area, 63.5 to 263mm is the inner section working area and 263 to 656.25mm is the outer section working area. The chord length of the vane root cross section is 110.4mm, the vane thickness in the section plane is 11.5mm and the setting angle is 9.1 degree; the chord length of the vane tip cross section is 64.6mm, the vane thickness in the section plane is 9.3mm and the setting angle is -3.7 degree. The utility model has the pneumatic advantages of high wind power utilization ration, low vibration, low noise and good consistency and can meet requirements of high productivity effect and low cost simultaneously.
Description
Technical field
The utility model relates to a kind of blade, especially about a kind of wind wheel blade of small-sized wind power generator.
Background technique
The wind wheel blade of traditional small-sized wind power generator generally adopts composite material manufacturings such as timber, sheet iron, glass fibre reinforced plastics, perhaps with plastics or aluminium alloy extruded forming.These blades exist the contradiction between configuration design and manufacturing efficiency, the cost of production three.On the one hand,, reduce cost in order to enhance productivity, the uniformly shaped blade that adopts materials such as plastics or aluminum alloy to make by extrusion forming process, the aerodynamic characteristic of this kind blade is bad; On the other hand, composite materials such as employing glass fibre reinforced plastics are stuck with paste the blade that technology is made by hand, though can satisfy the aerodynamic configuration requirement of blade to a certain extent, manufacturing efficiency is low, the cost of production height.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of novel structure, wind wheel blade attractive in appearance, this kind blade can be taken into account the relation between configuration design and manufacturing efficiency, the cost of production three, both had the power coefficient height, vibration is little, noise is low and the aerodynamic characteristic of high conformity, can satisfy simultaneously the high and low requirement of cost of production of manufacturing efficiency again.
The technological scheme that is adopted that the utility model solves its technical problem is: the wind wheel blade of this kind small-sized wind power generator is optimized linear processing with twist angle of blade chord progress row, whole blade comprises three working areas: petiole working area, inner segment working area, outer section working area, the two ends of outer section working area be blade root and leaf slightly, blade root is the NACA4410 aerofoil profile, blade tip is the NACA4412 aerofoil profile, from the blade root section to the blade tip section with blade twist, section chord length linear decrease, blade has certain cone angle.
The whole blade profile is according to the optimum configuration designing requirement, takes into account starting and performance demands, utilizes cone angle effects choose reasonable blade cone angle, and the resultant direction that makes aerodynamic force, centrifugal force to identical, helps reducing the flexural stress of blade along the exhibition of blade.
The blade total length is 656.25mm, and 0～63.5mm is the petiole working area, and 63.5～263mm is the inner segment working area, and 263～656.25mm is outer section working area.The section chord length of blade root is 110.4mm, and section wing thickness is 11.5mm, and established angle is 9.1 °; The section chord length of blade tip is 64.6mm, and section wing thickness is 9.3mm, and established angle is-3.7 °.
The beneficial effects of the utility model are: this kind blade can be taken into account the relation between configuration design and manufacturing efficiency, the cost of production three, both had the power coefficient height, vibration is little, noise is low and the aerodynamic characteristic of high conformity, can satisfy simultaneously the high and low requirement of cost of production of manufacturing efficiency again.
Description of drawings
Fig. 1 is a plan view of the present utility model;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the right elevation of Fig. 1;
Fig. 4 is the worm's eye view of Fig. 1;
Fig. 5 is the A-A sectional view of Fig. 1;
Fig. 6～Figure 22 is respectively S1-S1～S17-S17 sectional view of Fig. 1.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As Fig. 1～shown in Figure 5, the utility model adopts high strength, glass fibre that weather resistance is good to process through injection molding technique by precision die, and the surface is coated with special-purpose enamel paint.Whole blade comprises three working areas: petiole working area 1, inner segment working area (S1～S6) 2, outer section working area (S6-S17) 3, the two ends of outer section working area be blade root and leaf slightly, blade root is the NACA4410 aerofoil profile, blade tip is the NACA4412 aerofoil profile, the section chord length linear torsion from the blade root section to the blade tip section.The blade total length is 656.25mm, and 0～63.5mm section is petiole working area 1, mainly plays a supportive role; 63.5～263mm section is inner segment working area 2, its major function is: on the one hand wind is swung the wind wheel tripping force is provided when starting, and the wind energy 25% that wind wheel absorbs during the wind wheel proper functioning is provided by inner segment working area 2 on the other hand; 263～656.25mm section is outer section working area 3, its major function is: on the one hand when the wind wheel proper functioning, 75% wind energy is provided for wind wheel, on the other hand from blade root section S6-S6 to blade tip section S17-S17 with blade twist, allow chord length according to linear change, improve the power coefficient of wind wheel greatly, reduced the materials consumption of every watt of generated energy.
The blade cone angle is 5.8 ° as shown in Figure 5, can reduce the flexural stress of blade to greatest extent.As Fig. 6～shown in Figure 22, the section chord length of blade root is 110.4mm, and section wing thickness is 11.5mm, and established angle is 9.1 °, and the section chord length of blade tip is 64.6mm, and section wing thickness is 9.3mm, and established angle is-3.7 °.Sectional drawing from section S6-S6 to section S17-S17 can see that the section chord length is decremented to 64.6mmm from 110.4mm, and established angle is decremented to-3.7 ° from 9.1 °, and wing thickness is decremented to 9.3mm from 11.5mm.By above optimization linear design, can improve the power coefficient of wind wheel greatly, reduce the materials consumption of every watt of generating.
Claims (3)
1, a kind of wind wheel blade of small-sized wind power generator, it is characterized in that whole blade comprises three working areas: petiole working area, inner segment working area, outer section working area, the two ends of outer section working area be blade root and leaf slightly, blade root is the NACA4410 aerofoil profile, blade tip is the NACA4412 aerofoil profile, from the blade root section to the blade tip section with blade twist, section chord length linear decrease, blade also has certain cone angle.
2, the wind wheel blade of small-sized wind power generator according to claim 1 is characterized in that: described blade total length is 656.25mm, and 0～63.5mm is the petiole working area, and 63.5～263mm is the inner segment working area, and 263～656.25mm is outer section working area.
3, the wind wheel blade of small-sized wind power generator according to claim 1 and 2 is characterized in that: the section chord length of described blade root is 110.4mm, and section wing thickness is 11.5mm, and established angle is 9.1 °; The section chord length of blade tip is 64.6mm, and section wing thickness is 9.3mm, and established angle is-3.7 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200540852U CN2869370Y (en) | 2006-01-20 | 2006-01-20 | Wind wheel blade for small-sized wind mill generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200540852U CN2869370Y (en) | 2006-01-20 | 2006-01-20 | Wind wheel blade for small-sized wind mill generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2869370Y true CN2869370Y (en) | 2007-02-14 |
Family
ID=37724305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200540852U Expired - Fee Related CN2869370Y (en) | 2006-01-20 | 2006-01-20 | Wind wheel blade for small-sized wind mill generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2869370Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011710A (en) * | 2010-11-23 | 2011-04-13 | 南京航空航天大学 | Wind machine blade |
| CN102518569A (en) * | 2012-01-11 | 2012-06-27 | 保定华翼风电叶片研究开发有限公司 | Blade for wind driven generator and wind driven generator with same |
| CN101749193B (en) * | 2009-12-09 | 2012-09-26 | 韩建景 | High-efficient wind powered generator with start-up wind speed being set and blades thereof |
| CN103807112A (en) * | 2014-02-25 | 2014-05-21 | 江苏中蕴风电科技有限公司 | Blade for narrow pipe wind gathering type wind power generation device |
| CN106593761A (en) * | 2016-12-19 | 2017-04-26 | 北京金风科创风电设备有限公司 | Blade, wind power generator comprising blade, male die and method for manufacturing male die |
-
2006
- 2006-01-20 CN CNU2006200540852U patent/CN2869370Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101749193B (en) * | 2009-12-09 | 2012-09-26 | 韩建景 | High-efficient wind powered generator with start-up wind speed being set and blades thereof |
| CN102011710A (en) * | 2010-11-23 | 2011-04-13 | 南京航空航天大学 | Wind machine blade |
| CN102011710B (en) * | 2010-11-23 | 2012-07-18 | 南京航空航天大学 | Wind machine blade |
| CN102518569A (en) * | 2012-01-11 | 2012-06-27 | 保定华翼风电叶片研究开发有限公司 | Blade for wind driven generator and wind driven generator with same |
| CN103807112A (en) * | 2014-02-25 | 2014-05-21 | 江苏中蕴风电科技有限公司 | Blade for narrow pipe wind gathering type wind power generation device |
| CN103807112B (en) * | 2014-02-25 | 2016-06-15 | 江苏中蕴风电科技有限公司 | Narrow pipe wind gathering type wind power generation plant blade |
| CN106593761A (en) * | 2016-12-19 | 2017-04-26 | 北京金风科创风电设备有限公司 | Blade, wind power generator comprising blade, male die and method for manufacturing male die |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070214 Termination date: 20100220 |