CN201661420U - Spiral-type vertical shaft wind power impeller - Google Patents
Spiral-type vertical shaft wind power impeller Download PDFInfo
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- CN201661420U CN201661420U CN2010201394648U CN201020139464U CN201661420U CN 201661420 U CN201661420 U CN 201661420U CN 2010201394648 U CN2010201394648 U CN 2010201394648U CN 201020139464 U CN201020139464 U CN 201020139464U CN 201661420 U CN201661420 U CN 201661420U
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- impeller
- spiral
- wind power
- blade
- shaft wind
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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 relates to an impeller for wind power generation, in particular to a spiral-type vertical shaft wind power impeller applied to an off-grid type vertical shaft wind power generating device. The impeller consists of a wheel hub with a rotating shaft hole and two vanes; and the two vanes are distributed into a 180-degree angle, the sections of the two vanes and the section of the wheel hub are taken as basic sections, the surface of the impeller is obtained by sweeping of the basic sections along a spiral line, a spiral angle is 180 degrees, the pitch is two times of the height of the impeller, and the spiral center is collinear to the axis of the impeller. The spiral-type vertical shaft wind power impeller has good starting performance, improves the wind energy conversion efficiency and has less torque fluctuation amplitude and high running stability.
Description
Technical field
The utility model relates to a kind of impeller that is used for wind-power electricity generation, refers in particular to a kind of spiral vertical-shaft wind impeller that is applied to from net type wind power generating set with vertical shaft.
Background technique
As a kind of energy conversion device, wind energy conversion system can draw this renewable energy sources of wind energy from occurring in nature.Along with the further adjustment of energy resource structure in the world wide, wind energy conversion system has become one of focus object of energy project area research.The wind energy transformation efficient of horizontal-shaft wind turbine is higher, is suitable for large-scale wind field and grid-connected system, but its size is bigger, and starting torque is bigger, and auxiliary device is many, and aerodynamic noise is big.And advantage such as vertical axis windmill is easy to use with it in recent years, apparatus of repair parts is few, mobility is good and obtain paying attention in middle low power generating occasion.The generator of vertical axis windmill can be placed on wind wheel bottom or ground, is convenient to installation and maintenance.Wind-force impeller is the core component of wind energy conversion system, is directly determining the stability of wind energy transformation efficient and wind energy conversion system operation.Use more vertical-shaft wind impeller at present and comprise two classes, one class is a resistance type, as Savonius wind-force impeller (Alvin H.Benesh et al.Wind turbinewith Savonius-type rotor.U.S.Patent, No.5494407), its advantage is that starting torque is big, and is simple in structure, easily manufactured, shortcoming is that Wind Power Utilization efficient is low, and in its period of rotation, the output torque fluctuation is bigger.Another kind of is lift-type, as Darrieus wind-force impeller (P.Deglaire, S.Engblom, O.Aren, H.Bernhoff.Analytical solutions for asingle blade in vertical axis turbine motionin two-dimensions.European Journal of Mechanics B/Fluids, 2009,28:506-520), its advantage is rationally to have utilized the lift principle, the wind energy conversion efficiency is higher, shortcoming be some to the wind angle under starting difficulty, and the fluidised form disorder around the blade easily causes the instability of impeller operation.The running principle and the structure of this two classes vertical-shaft wind impeller all exist bigger difference.
For resistance force type vertical shaft wind power impeller, the wind energy conversion efficiency is extremely important evaluation index, but starting wind velocity, efficient wind speed range, operation stability, noise etc. all are very important factors of evaluation.At present because the restriction of experimental condition, and during the wind energy conversion system actual motion, the uncertainty that wind speed profile and wind speed change still can not be assessed accurately for the performance of resistance-type vertical axis wind turbine, and the design of resistance-type vertical axis wind turbine lacks distinct theory support.
The model utility content
The technical problems to be solved in the utility model is: low in order to overcome present resistance type wind-force impeller Wind Power Utilization efficient, and the shortcoming that the fluctuation of period of rotation moment of resistance is big, the spy provides a kind of spiral vertical-shaft wind impeller.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of spiral vertical-shaft wind impeller, form by the hub with rotary shaft hole and two blades, two blades are mutually 180 degree and distribute, the cross section of forming with the cross section and the hub cross section of two blades is a fundamental section, impeller surface is then scanned along helix by fundamental section and is obtained, helix angle is 180 degree, and pitch is 2 times of impeller height, spiral center and impeller axle center conllinear.
In order further to improve the rigidity of impeller and the stability of operation, improve operational efficiency, the thickness of blade is reduced to outer rim gradually by root of blade, and hub and two blades are integral structure; The ratio of impeller height and blade base circle diameter (BCD) is that the stagger ratio of spacing and blade base circle diameter (BCD) of 3～3.5: 1, two blade is 0.15～0.2.
The beneficial effects of the utility model are: 1. the starting performance of impeller is good, and the air-flow that blows from any direction all can order about wheel rotation; 2. the wind energy conversion efficiency improves, and the air-flow that enters helical duct between blade rise along helical duct, thereby the energy of air-flow is is effectively intercepted and captured when promoting the impeller rotation; 3. the fluctuating range of moment is little, the operation stability height, and in the impeller period of rotation, because leaf weight is circumferentially uniform, blade profile is uniform in the running shaft periphery, and therefore the instantaneous moment that makes wind-force impeller produce is comparatively even.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a perspective view of the present utility model.
Among the figure: 1. hub 2. blades
Embodiment
A kind of spiral vertical-shaft wind impeller, as shown in Figure 1, it is made up of the hub 1 with rotary shaft hole and two blades 2, two blades 2 are mutually 180 degree and distribute, the cross section of forming with the cross section and hub 1 cross section of two blades 2 is a fundamental section, and impeller surface is then scanned along helix by fundamental section and obtained, and helix angle is 180 degree, pitch is 2 times of impeller height, spiral center and impeller axle center conllinear.
The thickness of blade 2 is reduced to outer rim gradually by blade 2 roots.Hub 1 and two blades 2 are integral structure.
The ratio of impeller height and blade 2 base circle diameter (BCD)s is that the stagger ratio of spacing and blade 2 base circle diameter (BCD)s of 3～3.5: 1, two blade 2 is 0.15～0.2.
Claims (4)
1. spiral vertical-shaft wind impeller, it is characterized in that: form by the hub with rotary shaft hole (1) and two blades (2), two blades (2) are mutually 180 degree and distribute, the cross section of forming with the cross section and hub (1) cross section of two blades (2) is a fundamental section, impeller surface is then scanned along helix by fundamental section and is obtained, helix angle is 180 degree, and pitch is 2 times of impeller height, spiral center and impeller axle center conllinear.
2. require described spiral vertical-shaft wind impeller according to right 1, it is characterized in that: the thickness of blade (2) is reduced to outer rim gradually by blade (2) root.
3. require described spiral vertical-shaft wind impeller according to right 1, it is characterized in that: hub (1) and two blades (2) are integral structure.
4. require described spiral vertical-shaft wind impeller according to right 1, it is characterized in that: the ratio of impeller height and blade (2) base circle diameter (BCD) is that the stagger ratio of spacing and blade (2) base circle diameter (BCD) of 3～3.5: 1, two blade (2) is 0.15～0.2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201394648U CN201661420U (en) | 2010-03-24 | 2010-03-24 | Spiral-type vertical shaft wind power impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201394648U CN201661420U (en) | 2010-03-24 | 2010-03-24 | Spiral-type vertical shaft wind power impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661420U true CN201661420U (en) | 2010-12-01 |
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ID=43231836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201394648U Expired - Fee Related CN201661420U (en) | 2010-03-24 | 2010-03-24 | Spiral-type vertical shaft wind power impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661420U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368896A (en) * | 2015-10-23 | 2017-02-01 | 田永胜 | Nautilus equiangular spiral wind wheel electric generator |
| CN108223263A (en) * | 2016-12-09 | 2018-06-29 | 安徽铸天成节能科技有限公司 | A kind of blade structure for wind driven generator based on laser micropore technology |
-
2010
- 2010-03-24 CN CN2010201394648U patent/CN201661420U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106368896A (en) * | 2015-10-23 | 2017-02-01 | 田永胜 | Nautilus equiangular spiral wind wheel electric generator |
| CN108223263A (en) * | 2016-12-09 | 2018-06-29 | 安徽铸天成节能科技有限公司 | A kind of blade structure for wind driven generator based on laser micropore technology |
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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: 20101201 Termination date: 20140324 |