CN104131949A - Horizontal shaft wind turbine free of blade tip eddies - Google Patents
Horizontal shaft wind turbine free of blade tip eddies Download PDFInfo
- Publication number
- CN104131949A CN104131949A CN201410361215.6A CN201410361215A CN104131949A CN 104131949 A CN104131949 A CN 104131949A CN 201410361215 A CN201410361215 A CN 201410361215A CN 104131949 A CN104131949 A CN 104131949A
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- wind turbine
- blade
- blades
- blade tip
- wheel hub
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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 invention relates to a horizontal shaft wind turbine free of blade tip eddies. The horizontal shaft wind turbine is composed of wind turbine blades, a fairing, a hub, a cabin, arc-shaped bent plates, a tower and the like. Under the successive and combined action of the blades and the arc-shaped bent plates installed on the suction surfaces of the blades, flowing, in the span-wise directions of the blades, of the air is reduced, the air can flow on the blades in the mode of being attached to the wing section better, and therefore the wind turbine has the optimum hydrodynamic force field, and the working capacity of the blades is improved. Meanwhile, variable pitch starting, critical attack angle high speed operation and feathering position stopping of the blades can be achieved through a variable pitch direction adjustment device, and the rotation speed can be flexibly controlled. The wind turbine is high in efficiency.
Description
Technical field
The invention belongs to the technical field of wind energy conversion system, in particular to a kind of horizontal-shaft wind turbine occurring without blade tip whirlpool.
Background technique
At present, wind energy conversion system mainly utilizes kinetic energy acting.This wind energy conversion system is in the time of low wind speed, and blade surface pressure side and suction surface pressure difference are not very large, so blade overdraught is attached to blade surface substantially.The nearly wheel hub of pneumatic equipment blades made, except ensureing that pneumatic design requires, also need to meet structural strength requirement, increasing profile thickness is one of method of dealing with problems, and adopts thick wing type at blade root near zone, but along with wind speed increases, thick wing type easily separates, easily produce blade tip whirlpool, cause wind energy absorptivity to reduce, certainly will affect power stage.Although the three-dimensional rotation effect of blade can postpone stall to a certain extent, and the minimizing of lift is had to certain making up, near flowing also because rotation effect becomes more complicated blade, the impact of separation still accounts for leading position.
For this reason, if can invent a kind of horizontal-shaft wind turbine occurring without blade tip whirlpool, can make blade suction surface Radial Flow weaken, suppress to a certain extent trailing edge place separated flow, weaken the generation of blade tip whirlpool, can postpone stall.
Summary of the invention
Technical problem to be solved by this invention is the generation for weakening blade tip whirlpool, improves lift aeroperformance, and a kind of wind energy conversion system proposing.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows: a kind of horizontal-shaft wind turbine occurring without blade tip whirlpool, comprise cabin, blade, wheel hub and pylon, described cabin is arranged on pylon, described wheel hub is arranged on the front end in cabin, and described blades installation, on described wheel hub, also comprises arc bent plate, described arc bent plate is arranged on the suction surface of described blade, and described arc bent plate is the arc section as the center of circle taking the axle center of wheel hub.
Further, described arc bent plate is uniform section width.
Further, also comprise cowling, described cowling is arranged on the front end of wheel hub.
Further, the thickness of described arc bent plate is d, and the aerofoil profile chord length of described blade is c, and d=0.02 × c.
Further, the quantity of described blade is 3, and is arranged on equably on described wheel hub.
Further, also comprise size mixing device, for regulating the propeller pitch angle of described blade.
The beneficial effect of the horizontal-shaft wind turbine that compared with prior art, the present invention occurs without blade tip whirlpool is:
1, the rotating shaft of this wheel hub is consistent with incoming flow wind direction, be subject to the restriction of cowling, and because how much complexities of pneumatic equipment blades made are very high, make to flow very complicated at pneumatic equipment blades made, the pneumatic equipment blades made that installs arc bent plate additional flows and does not install before the moving rule more of curved bend plate current additional, be blades flows along Airfoil Flow, can obviously reduce blade radial flow.
2, this wheel hub is swept wind energies all in wind face by horizontal axis and is done work by blade, makes whole exhibition to all having better acting ability, has overcome the weak shortcoming of horizontal axis wheel hub blade root end acting ability.Taking wheel hub center as the center of circle, centered by wheel hub rotating shaft, axis forms the streamline at wind energy conversion system bent plate place, and dividing plate is consistent with streamline, and each bent plate place flow direction is tangent with circular arc.Adding of dividing plate can not strengthen rotational resistance, increases effective output of wind energy conversion system.
3, this wheel hub blade adopts and installs arc bent plate design improvement additional, and along bent plate air intake, and blade is opening up to reducing runoff, has good acting ability, has overcome traditional wind energy conversion system Radial Flow large, and blade tip whirlpool is strong, and the not enough shortcoming of doing work.
Brief description of the drawings
Fig. 1 is the schematic three dimensional views of the present invention without the horizontal-shaft wind turbine of blade tip whirlpool generation.
Fig. 2 is that bent plate position and wheel hub are related to schematic diagram.
Fig. 3 is the scheme of installation of bent plate.
Wherein: 1, arc bent plate; 2, cabin; 3 blades; 4 wheel hubs; 5 pylons; 6 suction surfaces.
Embodiment
For making object and the technological scheme of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing of the embodiment of the present invention, the technological scheme of the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiments.Based on described embodiments of the invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite without creative work, belongs to the scope of protection of the invention.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) have with the present invention under the identical meaning of the general understanding of those of ordinary skill in field.Should also be understood that such as those terms that define in general dictionary and should be understood to have the meaning consistent with meaning in the context of prior art, unless and definition as here, can not explain by idealized or too formal implication.
The implication of the "and/or" described in the present invention refers to separately individualism or both simultaneous situations include interior.
The implication of " inside and outside " described in the present invention refers to respect to equipment itself, in the direction of sensing equipment inside is, otherwise outside being, but not specific restriction to equipment mechanism of the present invention.
When the implication of " left and right " described in the present invention refers to reader just to accompanying drawing, reader's the left side is a left side, and the right of reader is the right side, but not specific restriction to equipment mechanism of the present invention.
The implication of " connection " described in the present invention can be that the direct connection between parts can be also by the indirect connection of other parts between parts.
As shown in Figure 1, the horizontal-shaft wind turbine that the present invention occurs without blade tip whirlpool, the main body of wind energy conversion system has comprised arc bent plate 1, suction surface 6 on pneumatic equipment blades made 3 is provided with the arc bent plate 1 of uniform section width, and arbitrary bent plate is taking wheel hub center as the center of circle, the segmental arc taking bent plate to wheel hub center as radius; One end of described blade is connected with cowling and wheel hub 4.The equipment such as the generator that wheel hub drives are arranged in wind energy conversion system cabin 2, and are fixed on cylinder tower cylinder 5.Described wind energy conversion system suction surface bent plate 1 be evenly distributed on blade exhibition to.
Air blows to wind energy conversion system runner from wind energy conversion system upstream, and wind energy conversion system utilizes the kinetic energy that wind has to carry out work.On the pneumatic equipment blades made 3 that installs arc bent plate 1 additional, when fluid is walked around blade, because arc bent plate 1 is in the effect of suction surface, cause fluid to be forced to move along aerofoil profile direction, reduce along blade exhibition to flowing, thereby weaken the generation in blade tip whirlpool.Weakening of whirlpool can make wind energy conversion system aeroperformance, particularly improves wind energy conversion system rotating shaft moment, makes under equal operating mode, and wind energy conversion system output power is higher.
As described in Figure 3, wind energy conversion system bent plate 1 is arranged on blade suction surface 6, and bent plate 1 opens up to being uniformly distributed along blade, and arbitrary bent plate is taking wheel hub center as the center of circle, the segmental arc taking bent plate to wheel hub center as radius; Proportional d=0.02 × the C of chord length C of bent plate 1 height d and local aerofoil profile, along with the increase of aerofoil profile chord length, the bent plate height installing additional is also increasing.
Described pneumatic equipment blades made 3 is fixed on cowling and wheel hub 4, and the controller in cabin, according to the angle of swing of the each blade of operation conditions synchronization control.
Described wind energy conversion system, owing to thering is less blade tip whirlpool, aeroperformance is better, in wind energy conversion system control procedure, response is rapider, make wind energy conversion system there is better starting torque, simultaneously wind energy conversion system is carrying out in aerobraking process, and can there be obvious minimizing the response time, can be in the strong wind situation more safe and reliable aerodynamic brake that carries out.
The present invention is a kind of horizontal-shaft wind turbine occurring without blade tip whirlpool, formed by pneumatic equipment blades made 3, cowling and wheel hub 4, cabin 2, arc bent plate 1, pylon 5 etc., wherein air is passing through blade and is being arranged under the priority acting in conjunction of arc bent plate 1 of suction surface 6, reduce along a slice exhibition to flowing, air-flow is better laminating Airfoil Flow on blade, make wind energy conversion system there is best fluid dynamic field, increased the acting ability of blade.Meanwhile, blade can be realized the shutdown that becomes oar starting, critical angle of attack high speed operation and feather position by becoming oar device for regulating direction, can control flexibly rotating speed, and wind energy conversion system has efficient efficiency.
These are only embodiments of the present invention, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (6)
1. the horizontal-shaft wind turbine occurring without blade tip whirlpool, comprise cabin (2), blade (3), wheel hub (4) and pylon (5), described cabin (2) is arranged on pylon (5), described wheel hub (4) is arranged on the front end of cabin (2), described blade (3) is arranged on described wheel hub (4), it is characterized in that, also comprise arc bent plate (1), it is upper that described arc bent plate (1) is arranged on the suction surface (6) of described blade (3), and described arc bent plate (1) is the arc section as the center of circle taking the axle center of wheel hub (4).
2. a kind of horizontal-shaft wind turbine occurring without blade tip whirlpool according to claim 1, is characterized in that, described arc bent plate (1) is uniform section width.
3. a kind of horizontal-shaft wind turbine occurring without blade tip whirlpool according to claim 1, is characterized in that, also comprise cowling, described cowling is arranged on the front end of wheel hub (4).
4. a kind of horizontal-shaft wind turbine occurring without blade tip whirlpool according to claim 1, is characterized in that, the thickness of described arc bent plate (1) is d, and the aerofoil profile chord length of described blade (3) is c, and d=0.02 × c.
5. a kind of horizontal-shaft wind turbine occurring without blade tip whirlpool according to claim 1, is characterized in that, the quantity of described blade (3) is 3, and is arranged on equably on described wheel hub (4).
6. a kind of horizontal-shaft wind turbine occurring without blade tip whirlpool according to claim 1, is characterized in that, also comprises size mixing device, for regulating the propeller pitch angle of described blade (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361215.6A CN104131949A (en) | 2014-07-28 | 2014-07-28 | Horizontal shaft wind turbine free of blade tip eddies |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410361215.6A CN104131949A (en) | 2014-07-28 | 2014-07-28 | Horizontal shaft wind turbine free of blade tip eddies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104131949A true CN104131949A (en) | 2014-11-05 |
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ID=51804757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410361215.6A Pending CN104131949A (en) | 2014-07-28 | 2014-07-28 | Horizontal shaft wind turbine free of blade tip eddies |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104131949A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2789957C1 (en) * | 2022-02-28 | 2023-02-14 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" | Rotary wind turbine |
-
2014
- 2014-07-28 CN CN201410361215.6A patent/CN104131949A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2789957C1 (en) * | 2022-02-28 | 2023-02-14 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" | Rotary wind turbine |
| RU2793502C1 (en) * | 2022-02-28 | 2023-04-04 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" | Rotary vertical wind turbine |
| RU2794291C1 (en) * | 2022-02-28 | 2023-04-14 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Воронежский государственный технический университет" | Vertical wind turbine |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141105 |
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| RJ01 | Rejection of invention patent application after publication |