CN203847322U - Lift force and resistance compensation type vertical shaft breeze wind turbine - Google Patents
Lift force and resistance compensation type vertical shaft breeze wind turbine Download PDFInfo
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- CN203847322U CN203847322U CN201420220095.3U CN201420220095U CN203847322U CN 203847322 U CN203847322 U CN 203847322U CN 201420220095 U CN201420220095 U CN 201420220095U CN 203847322 U CN203847322 U CN 203847322U
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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
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Abstract
The utility model discloses a lift force and resistance compensation type vertical shaft breeze wind turbine which comprises an impeller, an electric generator and a support. The impeller is connected with a rotating shaft of the electric generator through a connecting bearing. The electric generator is installed on the support. The impeller comprises a plurality of lifting force type blades, a plurality of resistance type blades, an upper outer end face, a lower outer end face, an upper cover plate and a lower cover plate. The lifting force type blades are distributed in a circle, and the two ends of each lifting force type blade are fixedly connected with the upper outer end face and the lower outer end face respectively. The resistance type blades are distributed in a circle, and the two ends of each resistance type blade are fixedly connected with the upper cover plate and the lower cover plate respectively. A blade ring formed by the resistance type blades is located inside a blade ring formed by the lifting force type blades. The upper cover plate and the lower cover plate are arranged at the outer end of the upper outer end face and the outer end of the lower outer end face respectively. The advantages of a lifting force type wind turbine and the advantages of a resistance type wind turbine are integrated; by matching and optimizing the two types of blades and through the folded type upper outer end wall and the folded type lower outer end wall, the breeze wind turbine has the advantage of being low in start wind speed; meanwhile, the problem that efficient wind energy power generation is difficult under the breeze-level wind speed can be well solved.
Description
Technical field
The utility model relates to a kind of gentle breeze wind energy conversion system, relates in particular to a kind of lift-drag complementary vertical axis gentle breeze wind energy conversion system.
Background technique
Wind energy conversion system is a kind ofly to take the sun as thermal source, the heat energy utilization motor that the atmosphere of take is working medium, to promote blade to obtain wind energy by air stream, and converting thereof into the power plant of useful mechanical or electrical energy simultaneously, wind energy is paid much attention to by people as reproducible, free of contamination natural energy resources, but the pneumatic limiting efficiency of changing (being the hereby limit of shellfish) is 59.3% in theory, the wind energy utilization of tradition wind energy conversion system work wind speed range is about 30-45%, the about 10-30% of low speed WECS, wind energy conversion system when low speed usually in idle running or send few electric energy, aspect the Wind Power Utilization of gentle breeze rank (3-4m/s), current wind energy conversion system wind energy utilization is lower both at home and abroad, traditional wind energy conversion system is divided into vertical axis windmill and horizontal-shaft wind turbine, wherein vertical axis windmill is mainly divided into two large classes, one class is lift-type wind energy conversion system, another kind of is exactly shaft resistance type windmill.The shortcoming of lift vertical shaft wind energy conversion system is exactly that self-startup ability is poor, and the shortcoming of shaft resistance type windmill is that wind energy utilization is low.
Model utility content
The purpose of this utility model provides a kind of lift-drag complementary vertical axis gentle breeze wind energy conversion system with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of lift-drag complementary vertical axis gentle breeze wind energy conversion system, comprise impeller, generator and support, described impeller is connected with the rotating shaft of described generator by connection bearing, described generator is arranged on described support, described impeller comprises a plurality of lift-type blades, a plurality of resistance type blades, upper exterior edge face, lower exterior edge face, upper cover plate and lower cover plate, the rounded distribution of a plurality of described lift-type blade and its two ends are fixedly connected with described lower exterior edge face with described upper exterior edge face respectively, its two ends of the rounded distribution of a plurality of described resistance type blade are fixedly connected with described lower cover plate with described upper cover plate respectively, the blade ring that described resistance type blade forms is positioned at the blade ring inside that described lift-type blade forms, described upper cover plate and described lower cover plate are separately positioned on the outer end of described upper exterior edge face and described lower exterior edge face.
Upper and lower exterior edge face makes air-flow in end, accelerate to flow, thereby reduces the end windage loss of wind energy conversion system.Air flow stream is crossed lift-type blade, and the aerodynamic force acting on blade makes impeller produce torsional moment, and then air-flow continues motion with certain speed, enter inner group resistance type blade passage, act on resistance type blade, its pressure difference promotes vane rotary, has increased wind energy conversion system starting torque.
In order to make the convergence of upper and lower end face better, described upper exterior edge face and described lower exterior edge face are hollow round table ring, and the diameter of described upper cover plate and described lower cover plate all with the bottom surface equal diameters of described round platform ring.
Particularly, the inside of the blade ring that described lift-type blade forms is provided with guide vane, the curved plate of described guide vane for being rotated a circle and form around axis by a spline curve.
As preferably, described lift-type blade is that NACA series blade profile blade and its number are four, and four described lift-type blades are all 90 ° of distributions along the medial axis of described impeller.
As preferably, described resistance type blade for the blade with two flex points that is " S " type and its number being formed by spline curve be four, four described resistance type blades are all 90 ° of distributions along the medial axis of described impeller.
The beneficial effects of the utility model are:
The utility model lift-drag complementary vertical axis gentle breeze wind energy conversion system combines the advantage of lift-type blower fan and resistance type blower fan, by to two kinds of blade profile matching optimizations, the outer end wall up and down that is aided with again convergence type, make it have the advantage of low startup wind speed, can solve preferably the difficulty of wind energy efficiency power generation under gentle breeze level wind speed simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model lift-drag complementary vertical axis gentle breeze wind energy conversion system;
Fig. 2 is the plan view of impeller described in the utility model;
Fig. 3 is the plan view of impeller described in the utility model, has saved upper cover plate and lower cover plate in figure;
Fig. 4 is the perspective view of impeller described in the utility model, has saved upper cover plate and lower cover plate in figure.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, the utility model lift-drag complementary vertical axis gentle breeze wind energy conversion system, comprise impeller 10, generator 20 and support 40, impeller 10 is connected with the rotating shaft of generator 20 by connection bearing 30, generator 20 is arranged on support 40, impeller 10 comprises exterior edge face 1, lower exterior edge face 2, upper cover plate 3, with lower cover plate 4, a plurality of lift-type blades 5, a plurality of resistance type blades 6 and guide vane 7, the rounded distribution of a plurality of lift-type blades 5 and its two ends are fixedly connected with lower exterior edge face 2 with upper exterior edge face 1 respectively, its two ends of the rounded distribution of a plurality of resistance type blades 6 are fixedly connected with lower cover plate 4 with upper cover plate 3 respectively, the blade ring that resistance type blade 6 forms is positioned at the blade ring inside that lift-type blade 5 forms, upper cover plate 3 and lower cover plate 4 are separately positioned on the outer end of exterior edge face 1 and lower exterior edge face 2, guide vane 7 is arranged on the inside of the blade ring of lift-type blade 5 compositions.
Upper exterior edge face 1 and lower exterior edge face 2 are hollow round table ring, and the diameter of upper cover plate 3 and lower cover plate 4 all with the bottom surface equal diameters of round platform ring, the curved plate of guide vane 7 for rotating a circle and form around axis by a spline curve, lift-type blade 5 is that NACA series blade profile blade and its number are four, four lift-type blades 5 are all 90 ° of distributions along the medial axis of impeller 10, resistance type blade 6 is that the blade with two flex points that is " S " type and its number consisting of spline curve is four, and four resistance type blades 6 are all 90 ° of distributions along the medial axis of impeller 10.
The working principle of the utility model lift-drag complementary vertical axis gentle breeze wind energy conversion system is as follows:
In order to overcome the shortcoming that lift vertical shaft wind energy conversion system startability is poor and wind energy utilization resistance-type vertical axis wind turbine is low, utilize to greatest extent the wind energy under gentle breeze level wind friction velocity, be effective the mechanical energy that is converted into wind machine device, the utility model adopts the blade of two types in a kind of wind energy conversion system simultaneously, enclose outside and put lift-type blade 5, and resistance type blade 6 is set in inner side, two kinds of blades are with certain setting angle coupling, the flow guide structure that is convergence type in the setting of the two ends up and down of impeller 10 is upper and lower end plate, its effect is to make air-flow in end, accelerate to flow, thereby reduce the end windage loss of wind energy conversion system, air flow stream is crossed lift-type blade 5, the aerodynamic force acting on blade makes impeller 10 produce torsional moment, then air-flow continues motion with certain speed, enter inner resistance type blade 6 runners, by the pressure difference acting on resistance blade, promote impeller 10 rotations, increased on the one hand wind energy conversion system starting torque, on the other hand by adjusting flowing of inner space, improve the flow field structure of lift-type blade 5, increase the moment of torsion that lift-type blade 5 produces, thereby improved wind energy utilization, realize gentle breeze rank wind energy to the Efficient Conversion of mechanical energy.
The technical solution of the utility model is not limited to the restriction of above-mentioned specific embodiment, and every technology distortion of making according to the technical solution of the utility model, within all falling into protection domain of the present utility model.
Claims (5)
1. a lift-drag complementary vertical axis gentle breeze wind energy conversion system, comprise impeller, generator and support, described impeller is connected with the rotating shaft of described generator by connection bearing, described generator is arranged on described support, it is characterized in that: described impeller comprises a plurality of lift-type blades, a plurality of resistance type blades, upper exterior edge face, lower exterior edge face, upper cover plate and lower cover plate, the rounded distribution of a plurality of described lift-type blade and its two ends are fixedly connected with described lower exterior edge face with described upper exterior edge face respectively, its two ends of the rounded distribution of a plurality of described resistance type blade are fixedly connected with described lower cover plate with described upper cover plate respectively, the blade ring that described resistance type blade forms is positioned at the blade ring inside that described lift-type blade forms, described upper cover plate and described lower cover plate are separately positioned on the outer end of described upper exterior edge face and described lower exterior edge face.
2. lift-drag complementary vertical axis gentle breeze wind energy conversion system according to claim 1, it is characterized in that: described upper exterior edge face and described lower exterior edge face are hollow round table ring, and the diameter of described upper cover plate and described lower cover plate all with the bottom surface equal diameters of described round platform ring.
3. lift-drag complementary vertical axis gentle breeze wind energy conversion system according to claim 1, it is characterized in that: the inside of the blade ring that described lift-type blade forms is provided with guide vane the curved plate of described guide vane for rotating a circle and form around axis by a spline curve.
4. lift-drag complementary vertical axis gentle breeze wind energy conversion system according to claim 1, is characterized in that: described lift-type blade is that NACA series blade profile blade and its number are four, and four described lift-type blades are all 90 ° of distributions along the medial axis of described impeller.
5. lift-drag complementary vertical axis gentle breeze wind energy conversion system according to claim 1, it is characterized in that: described resistance type blade is that the blade with two flex points that is " S " type and its number that spline curve, consist of are four, and four described resistance type blades are all 90 ° of distributions along the medial axis of described impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420220095.3U CN203847322U (en) | 2014-04-30 | 2014-04-30 | Lift force and resistance compensation type vertical shaft breeze wind turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420220095.3U CN203847322U (en) | 2014-04-30 | 2014-04-30 | Lift force and resistance compensation type vertical shaft breeze wind turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847322U true CN203847322U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420220095.3U Expired - Fee Related CN203847322U (en) | 2014-04-30 | 2014-04-30 | Lift force and resistance compensation type vertical shaft breeze wind turbine |
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| CN (1) | CN203847322U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967701A (en) * | 2014-04-30 | 2014-08-06 | 哈尔滨工业大学 | Lift-drag complementary type vertical axis breeze wind turbine |
| KR20210140846A (en) * | 2020-05-14 | 2021-11-23 | (주) 성심엘앤디 | Sprockets with improved torque and cooling towers with them |
-
2014
- 2014-04-30 CN CN201420220095.3U patent/CN203847322U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967701A (en) * | 2014-04-30 | 2014-08-06 | 哈尔滨工业大学 | Lift-drag complementary type vertical axis breeze wind turbine |
| KR20210140846A (en) * | 2020-05-14 | 2021-11-23 | (주) 성심엘앤디 | Sprockets with improved torque and cooling towers with them |
| KR102367571B1 (en) * | 2020-05-14 | 2022-02-25 | (주)성심엘앤디 | Sprockets with improved torque and cooling towers with them |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20150430 |
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| EXPY | Termination of patent right or utility model |