CN105464911A - Vortex generator for blade of wind driven generator - Google Patents
Vortex generator for blade of wind driven generator Download PDFInfo
- Publication number
- CN105464911A CN105464911A CN201610005942.8A CN201610005942A CN105464911A CN 105464911 A CN105464911 A CN 105464911A CN 201610005942 A CN201610005942 A CN 201610005942A CN 105464911 A CN105464911 A CN 105464911A
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- China
- Prior art keywords
- blade
- profile
- wind
- base
- generator
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/21—Rotors for wind turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
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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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- Wind Motors (AREA)
Abstract
The invention discloses a vortex generator for a blade of a wind driven generator. The vortex generator comprises a base and two molded surfaces, wherein the molded surfaces are arranged on the base in a mirror symmetry mode. Each molded surface is provided with a convex arc edge, a sweepback bevel edge and a straight edge, wherein the straight edge is fixedly connected to the base; the front end of the straight edge and the front end of the convex arc edge intersect to form the front end of the molded surface; the rear end of the straight edge and the bottom end of the sweepback bevel edge intersect to form the rear-end bottom corner of the molded surface, and the rear end of the convex arc edge and the top end of the sweepback bevel edge intersect to form the rear-end top corner of the molded surface. A vortex generated by the vortex generator for the blade of the wind driven generator is high in strength and stable, and therefore the lift and the lift-to-drag ratio of the blade of the wind driven generator can be effectively increased.
Description
Technical field
The present invention relates to field of wind power equipment, be specifically related to a kind of blade of wind-driven generator vortex generator.
Background technique
Shine upon earth surface, earth surface is heated difference everywhere, produces the temperature difference, thus causes the convective motion of air to form wind, its energy carried and wind energy.The blade rotary of wind power generating set is moved in wind and then drive electrical generators rotary electrification claims wind-power electricity generation and wind-powered electricity generation.Wind energy is a kind of reformulations of solar energy, is a kind of renewable natural energy resources not producing any disposal of pollutants.Compare with power generation with marine energy with solar energy, biology, underground heat, wind-powered electricity generation is the new energy of current techniques and most commercial scale exploit condition economically.
Blade is one of critical component of whole wind power generating set, the performance of wind power generating set and the performance of blade closely bound up.The blade of wind power generating set installs vortex generator, the lift of blade can be improved by vortex generator, and improve ratio of lift coefficient to drag coefficient, thus improve the performance of blade.Nineteen forty-seven Taylor etc. first proposed the concept of vortex generator, may be used for boundary layer flowing and controls.Early stage vortex generator is foliaceous, usually with come flow path direction form certain angle after vertical arrangement in working as ground surface, air-flow is by then hauling out a series of vortex after eddy generator, impel the energy interchange of boundary layer bottom Low Energy Region and high energy region, boundary layer border, realize the control of boundary layer separated flow.When vortex generator is applied to blade of wind-driven generator, blade lift at a certain wind speed can be improved, promote blower fan generated output, and then improve generated energy.
Vortex generator Main Function is the airflow breakaway delaying blade of wind-driven generator surface, can improve fan blade generated output at a certain wind speed like this.In running, there is strength of vortex little in existing vortex generator, eddy current situation off and on, causes generating efficiency to promote DeGrain or the large situation of wave properties.
Summary of the invention
Therefore, the whirlpool intensity that the object of this invention is to provide a kind of generation is stablized greatly, effectively can promote the blade of wind-driven generator vortex generator of fan blade lift and ratio of lift coefficient to drag coefficient.
Blade of wind-driven generator vortex generator of the present invention comprises a base and two specular and is arranged in profile on described base, described profile has a convex arc edge, a sweepback hypotenuse and a flat side, described flat side is fixed on described base, the front end forming described profile is intersected in described flat side front end and described convex arc edge front end, and described flat side rear end and described sweepback hypotenuse bottom extremity form the base angle, rear end of described profile, the crossing rear end drift angle forming described profile in described convex arc edge rear end and described sweepback hypotenuse top.
Described convex arc edge can extend the formation distance of vortical flow, increases the intensity of the vortical flow that eddy generator produces to a certain extent.Described convex arc edge is 1/4 oval edges preferably, and the vortical flow of generation can be made more stable.
Described in two, between profile, the distance of front end is less than the distance of rear end, and the angle described in two between profile is 18 ° ~ 36 °.When distinguished and admirable through described blade of wind-driven generator vortex generator and described profile shape at a certain angle.
The sweepback hypotenuse of described profile and the angle of flat side are 95 ° ~ 108 °, and namely described profile rear end tilts backwards to top gradually from bottom.
Described profile and described base angle are 89 ° ~ 91 °, and namely described profile is with described base place plane orthogonal or in vertical basic surface thereof 1 °.
In a preferred embodiment of the present invention, described in described base and two, profile is structure as a whole, and described base is that isosceles trapezoid comprises the upper base of front end, the bottom of rear end and two waists, and the flat side of described two profiles overlaps with two waists of described base respectively.Described integrative-structure is convenient when mounted.
The material of described profile and described base can select PC alloy.
The key point of blade of wind-driven generator vortex generator of the present invention is:
1) design on described convex arc limit, can extend the formation distance of vortical flow on the one hand, increase the intensity of the vortical flow that described blade of wind-driven generator eddy generator produces to a certain extent; On the other hand, the preferably design of described 1/4 oval edges, can make the vortical flow of generation more stable.
2) design of described sweepback hypotenuse, can make the lift-off vortical flow after flowing through described blade of wind-driven generator eddy generator more stable, reduces vortical flow to the receptance of wind speed, and when wind speed change is little, vortical flow is more stable.
3) described 1/4 elliptical side coordinates the design of described sweepback hypotenuse, and make described profile area comparatively large, under equal conditions, the intensity of the vortical flow of generation is relatively large, and the ability delaying blade surface airflow breakaway is stronger.
To sum up, after blade of wind-driven generator vortex generator of the present invention is arranged on blade surface, the longitudinal turbulence that intensity is larger and stable can be produced, the airflow breakaway of effective suppression airfoil surface, and then improve the lift of aerofoil profile, the generating capacity of wind power generating set is got a promotion, and annual average power generation can improve 2 ~ 3%; Meanwhile, vortex generator, by suppressing the airflow breakaway of airfoil surface, can also reduce the instability of blade surface air-flow effectively, thus reduces the vibration of blade, extends the life-span of blade and wind-power electricity generation complete machine.
Accompanying drawing explanation
Fig. 1 is blade of wind-driven generator vortex generator schematic perspective view of the present invention.
Fig. 2 is blade of wind-driven generator vortex generator schematic side view of the present invention.
Embodiment
Embodiment
The blade of wind-driven generator vortex generator of the present embodiment as shown in Figure 1, is the integrative-structure that material is PC alloy, and it comprises base 1 profile identical with two structures 2.Base 1 comprises the upper base of front end in isosceles trapezoid, rear end is bottom and two waists.Profile 2 has 1/4 oval edges 21, sweepback hypotenuse 22 and flat side 23, as shown in Figure 2, formation profile 22 front end is intersected in flat side 23 front end and 1/4 oval edges 21 front end, flat side 23 rear end and sweepback hypotenuse 22 bottom are compared and are formed base angle, profile 2 rear end, and formation profile 2 rear end drift angle is intersected on 1/4 oval edges 21 rear end and sweepback hypotenuse 22 top.Two profiles 2 perpendicular to base 1 and the flat side 23 of two profiles 2 overlap with two waists of base 1 respectively, the angle of the angle between two profiles 2 and base 1 liang of waist is 18 ~ 36 °, namely not parallel between two profiles 2, the close together of two profile 2 front ends, rear end distant.Sweepback hypotenuse 22 is 95 ~ 108 ° with the angle of flat side 23.
During actual use, as shown in Figure 1, when air-flow 3 flows through blade of wind-driven generator vortex generator, 1/4 oval edges 21 can extend the formation distance of vortical flow, increases the intensity of the vortical flow that blade of wind-driven generator eddy generator produces; On the other hand, the vortical flow of generation can be made more stable, and continuity is strong.Effectively can promote the generated output of fan blade when normal operation, annual electricity generating capacity promotes 2% ~ 3%.
Claims (7)
1. a blade of wind-driven generator vortex generator, it is characterized in that, it comprises a base and two specular and is arranged in profile on described base, described profile has a convex arc edge, a sweepback hypotenuse and a flat side, described flat side is fixed on described base, the front end forming described profile is intersected in described flat side front end and described convex arc edge front end, and described flat side rear end and described sweepback hypotenuse bottom extremity form the base angle, rear end of described profile, the crossing rear end drift angle forming described profile in described convex arc edge rear end and described sweepback hypotenuse top.
2. blade of wind-driven generator vortex generator as claimed in claim 1, it is characterized in that, described convex arc edge is 1/4 oval edges.
3. blade of wind-driven generator vortex generator as claimed in claim 2, it is characterized in that, described in two, between profile, the distance of front end is less than the distance of rear end, and the angle described in two between profile is 18 ° ~ 36 °.
4. blade of wind-driven generator vortex generator as claimed in claim 2, it is characterized in that, the sweepback hypotenuse of described profile and the angle of flat side are 95 ° ~ 108 °.
5. blade of wind-driven generator vortex generator as claimed in claim 2, it is characterized in that, described profile and described base angle are 89 ° ~ 91 °.
6. the blade of wind-driven generator vortex generator as described in any one of Claims 1 to 5, it is characterized in that, described in described base and two, profile is structure as a whole, described base is that isosceles trapezoid comprises the upper base of front end, the bottom of rear end and two waists, and the flat side of described two profiles overlaps with two waists of described base respectively.
7. blade of wind-driven generator vortex generator as claimed in claim 6, it is characterized in that, the material of described profile and described base is PC alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610005942.8A CN105464911A (en) | 2016-01-06 | 2016-01-06 | Vortex generator for blade of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610005942.8A CN105464911A (en) | 2016-01-06 | 2016-01-06 | Vortex generator for blade of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105464911A true CN105464911A (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610005942.8A Pending CN105464911A (en) | 2016-01-06 | 2016-01-06 | Vortex generator for blade of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105464911A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110821761A (en) * | 2019-11-22 | 2020-02-21 | 中材科技风电叶片股份有限公司 | Vortex generators and blades |
| CN110925143A (en) * | 2018-09-19 | 2020-03-27 | 远景能源（江苏）有限公司 | Wind turbine with a circular or conical tower structure and passive fluid control means and use of such a circular tower structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101223356A (en) * | 2005-05-17 | 2008-07-16 | 维斯塔斯风力系统有限公司 | Pitch control type wind turbine blade, wind turbine and its application |
| CN203420835U (en) * | 2013-07-25 | 2014-02-05 | 国电联合动力技术有限公司 | Vortex generator and wind generating set using same |
| DE102013210737A1 (en) * | 2013-06-10 | 2014-12-11 | Senvion Se | Attachment of vortex generators |
| CN205370865U (en) * | 2016-01-06 | 2016-07-06 | 上海绿孚新能源科技有限公司 | Aerogenerator blade vortex generator |
-
2016
- 2016-01-06 CN CN201610005942.8A patent/CN105464911A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101223356A (en) * | 2005-05-17 | 2008-07-16 | 维斯塔斯风力系统有限公司 | Pitch control type wind turbine blade, wind turbine and its application |
| DE102013210737A1 (en) * | 2013-06-10 | 2014-12-11 | Senvion Se | Attachment of vortex generators |
| CN203420835U (en) * | 2013-07-25 | 2014-02-05 | 国电联合动力技术有限公司 | Vortex generator and wind generating set using same |
| CN205370865U (en) * | 2016-01-06 | 2016-07-06 | 上海绿孚新能源科技有限公司 | Aerogenerator blade vortex generator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110925143A (en) * | 2018-09-19 | 2020-03-27 | 远景能源（江苏）有限公司 | Wind turbine with a circular or conical tower structure and passive fluid control means and use of such a circular tower structure |
| CN110925143B (en) * | 2018-09-19 | 2021-09-24 | 远景能源（江苏）有限公司 | Wind turbines with circular or conical tower structures and passive fluid control devices and applications of such circular tower structures |
| CN110821761A (en) * | 2019-11-22 | 2020-02-21 | 中材科技风电叶片股份有限公司 | Vortex generators and blades |
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Application publication date: 20160406 |
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