CN201621002U - Multi-section combined wind blade - Google Patents
Multi-section combined wind blade Download PDFInfo
- Publication number
- CN201621002U CN201621002U CN2010201211613U CN201020121161U CN201621002U CN 201621002 U CN201621002 U CN 201621002U CN 2010201211613 U CN2010201211613 U CN 2010201211613U CN 201020121161 U CN201020121161 U CN 201020121161U CN 201621002 U CN201621002 U CN 201621002U
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- wind
- combined fan
- inlet
- inlet arc
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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
本实用新型涉及一种带有多段组合式风叶，包括进口圆弧段和出口直线段，出口直线段与进口圆弧段首尾相切；进口圆弧段的拱高与弦长之比为0.35，进口圆弧段的弦长与出口直线段的长度之比为0.75。若干个等叶高的多段组合式风叶沿周向均匀排列于风轮上、下盖板之间形成风轮，多段组合式风叶的进口安装角的为0°～10°。本实用新型的优点是：该风叶具有风能收集性强、流动损失少、迎风面阻力小、加工工艺简单等优点，由它所构成的风轮可形成具有高效风能利用效率的垂直轴风力机。
The utility model relates to a multi-section combined fan blade, which includes an inlet arc section and an outlet straight section, the outlet straight section and the inlet arc section are tangent head to tail; the ratio of the arch height to the chord length of the inlet arc section is 0.35 , the ratio of the chord length of the inlet arc segment to the length of the outlet straight segment is 0.75. Several multi-section combined fan blades with equal blade heights are evenly arranged in the circumferential direction between the upper and lower cover plates of the wind rotor to form a wind rotor. The inlet installation angle of the multi-section combined fan blades is 0°-10°. The utility model has the advantages that: the wind blade has the advantages of strong wind energy collection, less flow loss, small windward resistance, simple processing technology, etc., and the wind wheel formed by it can form a vertical axis wind turbine with high wind energy utilization efficiency .
Description
Technical field
The utility model relates to a kind of fan blade that is used on the vertical axis wind turbine rotor, especially a kind of vertical-shaft wind machine blade with good pneumatic effect.
Background technique
Wind energy conversion system is the power source of wind-power generating system, and it is a mechanical energy with wind energy transformation, and then the pushing generator generating.Wind energy conversion system is divided into two kinds of horizontal axis and vertical shaftes substantially by structural type.The horizontal-shaft wind turbine development is more perfect, has obtained using widely as the wind energy conversion system type of current main flow because it has higher efficient.Yet because horizontal-shaft wind turbine installation difficulty height, cost of investment are big and inconvenience such as moves at shortcoming, its use often mainly is limited at present generates electricity by way of merging two or more grid systems, and small-sized in net type power generation system for some, the present the most widely used vertical axis windmill that is still.
Shown in Figure 1 is a kind of schematic representation of conventional vertical axis windmill the most, fan blade 1, running shaft 2, wind wheel sense of rotation 3, its efficient is more much lower than respective horizontal axle wind energy conversion system, and a main cause is that what be subjected in the left side of its windward side is effective thrust when incoming flow impacts vertical axis rotor, and what be subjected on the right side is the resistance of wind, and the cooperation of above-mentioned two kinds of power firmly is the real effective power that promotes wind wheel rotation work done.Owing to the existence of right side, windward side windage, greatly reduce effective wind-engaging performance of vertical shaft impeller.Therefore, have only the windage that reduces the right side, windward side, can improve the efficient of vertical axis windmill.With regard to the vertical-shaft wind machine blade of routine, on its windward side, the wind-exposuring area on wind-exposuring area and the right side in left side is almost equal, and this structure must make the windage on its right side quantitatively close with effective Driving force in left side, thereby its effective Driving force is only declined to a great extent.Therefore, as long as designed fan blade form satisfies " wind-exposuring area on right side will as far as possible little and the wind-exposuring area left side is big as far as possible ", this just is expected to improve the aeroperformance of whole vertical axis windmill.
Summary of the invention
The utility model is that a kind of multi-section combined vanes will be provided, and is used for solving existing vertical-shaft wind machine blade, and the wind-exposuring area on right side and the wind-exposuring area in left side are almost equal, thus the technical problem that its effectively clean Driving force is declined to a great extent.
For achieving the above object, the technical solution of the utility model is:
A kind of multi-section combined vanes that has comprises inlet circular arc section and outlet straightway, and be characterized in: outlet straightway and inlet circular arc section head and the tail are tangent; The sagitta of inlet circular arc section is 0.35 with the ratio of chord length, and the chord length of inlet circular arc section is 0.75 with the length ratio of outlet straightway.
The high multi-section combined vanes of several leaves such as grade forms wind wheel along circumferentially evenly distributed between the upper and lower cover plate of wind wheel, the stagger angle of multi-section combined vanes be 0 °～10 °.
The beneficial effects of the utility model are:
Fan blade of the present utility model, its wind-exposuring area can satisfy the requirement of left side greater than the right side, thereby it can realize reducing the resistance of three o'clock wind, thereby realizing the high efficiency of its operation in the wind energy Driving force of increase left side under the effect of wind field.Compared with prior art, the utlity model has following advantage:
1. this multi-section combined vanes has characteristics such as wind energy collecting is strong, flow losses are few, the windward side resistance is little;
2. the tangent structure of the outlet straightway of this multi-section combined vanes and inlet circular arc section head and the tail helps to improve fluidal texture in the fan blade runner, thereby improves the operational efficiency of this kind wind energy conversion system.
3. this multi-section combined vanes is made of simple geometry molded lines such as circular arc and straight lines, and its blade forming method is simple, and processing technology is convenient;
Description of drawings
Fig. 1 is a kind of vertical axis windmill schematic representation of routine;
Fig. 2 is a structural representation of the present utility model;
Fig. 3 is the wind wheel plan view that multi-section combined vanes combines;
Fig. 4 is the wind wheel plan view that multi-section combined vanes combines.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in detail.But present embodiment is not limited to the utility model, and every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.
As shown in Figure 2: a kind of multi-section combined vanes 10 that has, comprise inlet circular arc section 4 and outlet straightway 5, outlet straightway 5 is tangent with inlet circular arc section 4 head and the tail; The sagitta 6 of inlet circular arc section 4 is 0.35 with the ratio of chord length 7 (chord of arch ratio), and the chord length 7 of inlet circular arc section 4 is 0.75 with the ratio of the length 8 of outlet straightway 5; The high multi-section combined vanes of several leaves such as grade 11 up and down between the cover plate 11,12, can form wind wheel in wind wheel along circumferentially evenly distributed, in the middle of the wind wheel running shaft 13 is housed, and the size of its stagger angle 9 is 0 °～10 °.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201211613U CN201621002U (en) | 2010-03-02 | 2010-03-02 | Multi-section combined wind blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201211613U CN201621002U (en) | 2010-03-02 | 2010-03-02 | Multi-section combined wind blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201621002U true CN201621002U (en) | 2010-11-03 |
Family
ID=43024457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201211613U Expired - Fee Related CN201621002U (en) | 2010-03-02 | 2010-03-02 | Multi-section combined wind blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201621002U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047089A (en) * | 2011-10-17 | 2013-04-17 | 平顶山市中嘉能源科技有限公司 | Blades of wind power generation device of electric vehicle |
| CN103835889A (en) * | 2012-11-23 | 2014-06-04 | 宁定光 | Wind turbine generator blade |
| CN106110964A (en) * | 2016-06-29 | 2016-11-16 | 江阴市正中科教器材有限公司 | A kind of from stirring flask |
-
2010
- 2010-03-02 CN CN2010201211613U patent/CN201621002U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047089A (en) * | 2011-10-17 | 2013-04-17 | 平顶山市中嘉能源科技有限公司 | Blades of wind power generation device of electric vehicle |
| CN103835889A (en) * | 2012-11-23 | 2014-06-04 | 宁定光 | Wind turbine generator blade |
| CN106110964A (en) * | 2016-06-29 | 2016-11-16 | 江阴市正中科教器材有限公司 | A kind of from stirring flask |
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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: 20101103 Termination date: 20110302 |