CN115163398A - Wind power blade with aerodynamic airfoil shape - Google Patents
Wind power blade with aerodynamic airfoil shape Download PDFInfo
- Publication number
- CN115163398A CN115163398A CN202210942788.2A CN202210942788A CN115163398A CN 115163398 A CN115163398 A CN 115163398A CN 202210942788 A CN202210942788 A CN 202210942788A CN 115163398 A CN115163398 A CN 115163398A
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- Prior art keywords
- blade
- vortex
- vortex generator
- airfoil shape
- wind turbine
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- 238000009434 installation Methods 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 description 5
- 239000004033 plastic Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
- F15D1/00—Influencing flow of fluids
- F15D1/002—Influencing flow of fluids by influencing the boundary layer
- F15D1/0025—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply
- F15D1/003—Influencing flow of fluids by influencing the boundary layer using passive means, i.e. without external energy supply comprising surface features, e.g. indentations or protrusions
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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
- F05B2240/305—Flaps, slats or spoilers
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a wind power blade with an aerodynamic wing shape, which comprises a blade and a plurality of vortex generators, wherein the vortex generators are arranged on a suction surface of the blade and comprise an installation base fixed on the blade and a turbulence structure arranged on the installation base, the top end of the turbulence structure is provided with a wing shape, and the end part of the wing shape is provided with a turbulence horizontal tip. According to the wind power blade with the aerodynamic airfoil shape, the flat plate-shaped vortex generator is changed into the shape with the aerodynamic airfoil, the generated effect is 1.1-2 times better than that of a flat plate, the lift coefficient is improved, the resistance coefficient is reduced, and the generated energy and comprehensive performance are improved.
Description
Technical Field
The invention relates to the technical field of wind power blades, in particular to a wind power blade with an aerodynamic wing shape.
Background
At present, a plurality of turbulent flow structures exist in the market, which are originated from aviation, and in the flight envelope range of an airplane, if the surface of the airplane body has unfavorable air flow separation, a plurality of adverse effects are brought, such as increased resistance, reduced lift force, early stall, asymmetric stall and the like; the main function of the turbulent flow structure is to effectively prevent the early separation of the airflow; in the application process of the wind driven generator blade, the turbulence structure is used in a large range, but the conventional turbulence structure is in a flat plate shape, so that the flow loss is large. The comprehensive performance effect is poor. In view of the above, it is desirable to design a wind turbine blade with an aerodynamic airfoil shape.
Disclosure of Invention
The invention aims to provide a wind power blade with an aerodynamic wing shape, a flat plate-shaped vortex generator is changed into the shape with the aerodynamic wing shape, the generated effect is 1.1-2 times better than that of a flat plate, the lift coefficient is improved, the resistance coefficient is reduced, and the generated energy and the comprehensive performance are improved.
In order to achieve the purpose, the invention provides an aerodynamic wing-shaped wind power blade which comprises a blade and a plurality of vortex generators, wherein the vortex generators are installed on a suction surface of the blade and comprise installation bases fixed on the blade and turbulent flow structures arranged on the installation bases, wing profiles are arranged at the top ends of the turbulent flow structures, and turbulent flow horizontal pointed ends are arranged at the end parts of the wing profiles.
Preferably, the mounting base is one of an oval shape, a trapezoid-like shape and an ellipse-like shape.
Preferably, a plurality of the vortex generators are arranged in parallel at the connection of the blade edge and the blade root edge of the blade.
Preferably, vortex generator is single wing vortex generator, two liang single wing vortex generator installs in pairs, each be provided with a vortex structure on the installation base.
Preferably, the distance between two of said spoiler horizontal tips appearing in pairs is from 0.2 x the maximum chord length of the spoiler structure to 2 x the maximum chord length of the spoiler structure.
Preferably, the distance between two of said spoiler structure tops that appear in pairs is from 0.2 x the maximum chord length of the spoiler structure to 3 x the maximum chord length of the spoiler structure.
Preferably, the vortex generator is a double-wing vortex generator, each of which is provided with two turbulence structures on the mounting base, and the two turbulence structures are arranged oppositely.
Preferably, the distance between the bottom ends of the two turbulent flow structures on one vortex generator is 0.2 × the maximum chord length of the turbulent flow structure to 2 × the maximum chord length of the turbulent flow structure.
Preferably, the distance between two horizontal turbulent flow tips on one vortex generator is 0.2 × the maximum chord length of the turbulent flow structure to 3 × the maximum chord length of the turbulent flow structure.
Preferably, the distance between the leading vortex generator and the end of the blade root edge is 2-8m.
Therefore, according to the wind power blade with the aerodynamic airfoil shape, which adopts the structure, the flat plate-shaped vortex generator is changed into the shape with the aerodynamic airfoil, the generated effect is 1.1-2 times better than that of the flat plate, the lift coefficient is improved, the resistance coefficient is reduced, and the generated energy and comprehensive performance are improved.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural view of an embodiment 1 of a wind turbine blade with an aerodynamic airfoil shape according to the present invention;
FIG. 2 is a schematic view of a vortex generator with an aerodynamic airfoil shape of an embodiment 1 of a wind turbine blade according to the present invention;
FIG. 3 is a top view of a vortex generator of an embodiment 1 of a wind blade with aerodynamic airfoil shape according to the present invention;
FIG. 4 is a schematic structural view of an embodiment 2 of a wind turbine blade with an aerodynamic airfoil shape according to the present invention;
FIG. 5 is a schematic view of a vortex generator of embodiment 2 of a wind turbine blade with aerodynamic airfoil shape according to the present invention;
FIG. 6 is a top view of a vortex generator with an aerodynamic airfoil shape wind blade embodiment 2 of the present invention.
Detailed Description
The invention provides a wind power blade with an aerodynamic wing shape, which comprises a blade 1 and a plurality of vortex generators 2, wherein the vortex generators 2 are arranged on a suction surface of the blade 1, each vortex generator 2 comprises an installation base 21 fixed on the blade 1 and a turbulent flow structure 22 arranged on the installation base 21, a wing shape 23 is arranged at the top end of each turbulent flow structure 22, and a turbulent flow horizontal tip 24 is arranged at the end part of each wing shape 23. The mounting base 21 is one of an oval shape, a trapezoid-like shape, and an ellipse-like shape. A plurality of vortex generators 2 are mounted in parallel at the junction of the blade edge and the root edge of the blade 1. The installation base is used for enlarging the bonding area with the blade, the installation bases of different shapes can produce the bonding effect of different intensity, the surface of the blade is uneven, and the surface of the installation base bonded with the blade can also be uneven. In order to avoid using metal products to lead thunder, sand-resistant and ultraviolet-resistant high-strength plastic products such as ABS, PP, ASA, PPS, PU, polyester, polypropylene and the like and modified materials using the materials as main raw materials are used. And after the plastic materials are completely melted, injecting the melted plastic materials into a mold, and cooling and solidifying the melted plastic materials to obtain the vortex generator.
The technical solution of the present invention is further illustrated by the accompanying drawings and examples.
Example 1
Fig. 1 is a schematic structural view of an embodiment 1 of a wind turbine blade with an aerodynamic airfoil shape according to the present invention, fig. 2 is a schematic structural view of a vortex generator of the embodiment 1 of the wind turbine blade with an aerodynamic airfoil shape according to the present invention, and fig. 3 is a top view of the vortex generator of the embodiment 1 of the wind turbine blade with an aerodynamic airfoil shape according to the present invention, as shown in the figure, the vortex generators 2 are single-wing vortex generators, two single-wing vortex generators are installed in pairs, and each of the installation bases 21 is provided with a spoiler structure 22. The distance between two spoiler horizontal tips 24, which occur in pairs, is 0.2 x the maximum chord length of the spoiler structure to 2 x the maximum chord length of the spoiler structure. The distance between the tops of two spoiler structures 22 present in pairs is 0.2 x the maximum chord length of the spoiler structure to 3 x the maximum chord length of the spoiler structure. The distance between the leading vortex generator 2 and the end of the blade root rim is 2-8m. The vortex generators of two kinds of single wings are installed on the suction surface of the wind power blade, and the two kinds of vortex generators can be checked differently according to the shape of the top wing profile, and the pressure surface and the suction surface of the two kinds of wing profiles are opposite. The two vortex generators can be arranged in pairs, not only a single vortex generator generates larger energy, but also two wing profiles generate different wake vortexes after the vortex generators are arranged in pairs, and the disturbed flow at the tail part of the blade is stronger. The mounting position of the single wing on the blade (case after gradual enlargement) is typically such that the vortex generators with different directions appear in pairs. The cross-sectional angle of the single vortex generator wing fin at the height above the ground can be uniform or can have a certain torsion angle. The cross section of the height above the ground can be shifted forwards or backwards in one direction, so that different turbulence effects are generated, and of course, the size of the cross section of the height above the ground can be larger and smaller or unchanged.
Example 2
Fig. 4 is a schematic structural view of an embodiment 2 of a wind turbine blade with an aerodynamic airfoil shape according to the present invention, fig. 5 is a schematic structural view of a vortex generator of the embodiment 2 of the wind turbine blade with an aerodynamic airfoil shape according to the present invention, and fig. 6 is a top view of the vortex generator of the embodiment 2 of the wind turbine blade with an aerodynamic airfoil shape according to the present invention, as shown in the figure, the vortex generator 2 is a double-wing vortex generator, two spoiler structures 22 are provided on each mounting base 21, and the two spoiler structures 22 are disposed opposite to each other. The distance between the bottom ends of the two spoiler structures 22 on one vortex generator 2 is from 0.2 × the maximum chord length of the spoiler structure to 2 × the maximum chord length of the spoiler structure. The distance between two turbulent horizontal tips 24 on one vortex generator 2 is 0.2 x the maximum chord length of the turbulent structure to 3 x the maximum chord length of the turbulent structure. The distance between the first vortex generator 2 and the end of the blade root edge is 2-8m. The vortex generators of the double wings can be arranged with the suction surface inside or outside. Of course, the cross-sectional angle of the wing fin at the height from the ground may be uniform or may have a certain torsion angle like a single vortex generator. The cross section of the height above the ground can be shifted forward or backward in one direction, so that different turbulence effects are generated, and of course, the size of the cross section of the height above the ground can be larger, smaller or unchanged.
Therefore, according to the wind power blade with the aerodynamic wing-shaped structure, the flat plate-shaped vortex generator is changed into the wind power blade with the aerodynamic wing-shaped structure, the generated effect is 1.1-2 times better than that of the flat plate-shaped vortex generator, the lift coefficient is improved, the resistance coefficient is reduced, and the generated energy and comprehensive performance are improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the disclosed embodiments without departing from the spirit and scope of the present invention.
Claims (10)
1. A wind turbine blade with an aerodynamic airfoil shape, comprising:
including blade and a plurality of vortex generator, vortex generator installs on the suction surface of blade, vortex generator is including fixing installation base on the blade is in with the setting vortex structure on the installation base, the top of vortex structure is provided with the wing section, the tip of wing section is provided with vortex level point.
2. Wind turbine blade with aerodynamic airfoil shape according to claim 1, characterized in that: the mounting base is one of an ellipse, a trapezoid-like and an ellipse-like.
3. Wind turbine blade with aerodynamic airfoil shape according to claim 1, characterized in that: and the vortex generators are arranged in parallel at the connecting part of the blade edge and the blade root edge of the blade.
4. Wind turbine blade with aerodynamic airfoil shape according to claim 1, characterized in that: vortex generator is single wing vortex generator, two liang single wing vortex generator installs in pairs, each be provided with a vortex structure on the installation base.
5. Wind turbine blade with aerodynamic airfoil shape according to claim 4, characterized in that: the distance between two disturbed flow horizontal tips which appear in pairs is 0.2 x the maximum chord length of the disturbed flow structure to 2 x the maximum chord length of the disturbed flow structure.
6. Wind turbine blade with aerodynamic airfoil shape according to claim 4, characterized in that: the distance between the tops of two said flow perturbation structures appearing in pairs is from 0.2 x the maximum chord length of the flow perturbation structure to 3 x the maximum chord length of the flow perturbation structure.
7. Wind turbine blade with aerodynamic airfoil shape according to claim 1, characterized in that: vortex generator is two wing vortex generator, each be provided with two vortex structures on the installation base, two vortex structures set up relatively.
8. Wind turbine blade with aerodynamic airfoil shape according to claim 7, characterized in that: the distance between the bottom ends of the two turbulent flow structures on one vortex generator is 0.2 multiplied by the maximum chord length of the turbulent flow structure to 2 multiplied by the maximum chord length of the turbulent flow structure.
9. Wind turbine blade with aerodynamic airfoil shape according to claim 7, characterized in that: the distance between the two disturbed flow horizontal tips on one vortex generator is 0.2 multiplied by the maximum chord length of the disturbed flow structure to 3 multiplied by the maximum chord length of the disturbed flow structure.
10. Wind turbine blade with aerodynamic airfoil shape according to claim 4 or 7, characterized in that: the distance between the first vortex generator and the end of the blade root edge is 2-8m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210942788.2A CN115163398A (en) | 2022-08-08 | 2022-08-08 | Wind power blade with aerodynamic airfoil shape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210942788.2A CN115163398A (en) | 2022-08-08 | 2022-08-08 | Wind power blade with aerodynamic airfoil shape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115163398A true CN115163398A (en) | 2022-10-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210942788.2A Pending CN115163398A (en) | 2022-08-08 | 2022-08-08 | Wind power blade with aerodynamic airfoil shape |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720631A (en) * | 2011-02-04 | 2012-10-10 | Lm风力发电公司 | Vortex generator device with tapered sections for a wind turbine |
| WO2014198353A1 (en) * | 2013-06-10 | 2014-12-18 | Senvion Se | Rotor blade and vortex generator |
| US20170138339A1 (en) * | 2015-11-13 | 2017-05-18 | Mitsubishi Heavy Industries, Ltd. | Vortex generator, wind turbine blade, and wind turbine power generating apparatus |
| US20190003451A1 (en) * | 2017-06-30 | 2019-01-03 | Mitsubishi Heavy Industries, Ltd. | Vortex generator and wind turbine blade assembly |
| CN111502907A (en) * | 2019-01-30 | 2020-08-07 | 上海电气风电集团股份有限公司 | Vortex generator, fan blade and wind driven generator comprising same |
| CN211874641U (en) * | 2020-03-20 | 2020-11-06 | 保定绿动风电设备科技有限公司 | Wind power blade with turbulence structure |
-
2022
- 2022-08-08 CN CN202210942788.2A patent/CN115163398A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720631A (en) * | 2011-02-04 | 2012-10-10 | Lm风力发电公司 | Vortex generator device with tapered sections for a wind turbine |
| WO2014198353A1 (en) * | 2013-06-10 | 2014-12-18 | Senvion Se | Rotor blade and vortex generator |
| US20170138339A1 (en) * | 2015-11-13 | 2017-05-18 | Mitsubishi Heavy Industries, Ltd. | Vortex generator, wind turbine blade, and wind turbine power generating apparatus |
| US20190003451A1 (en) * | 2017-06-30 | 2019-01-03 | Mitsubishi Heavy Industries, Ltd. | Vortex generator and wind turbine blade assembly |
| CN111502907A (en) * | 2019-01-30 | 2020-08-07 | 上海电气风电集团股份有限公司 | Vortex generator, fan blade and wind driven generator comprising same |
| CN211874641U (en) * | 2020-03-20 | 2020-11-06 | 保定绿动风电设备科技有限公司 | Wind power blade with turbulence structure |
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