CN207554255U - A kind of band winglet and the up-front darrieus marine tidal-current energy runner bucket of shaped form - Google Patents
A kind of band winglet and the up-front darrieus marine tidal-current energy runner bucket of shaped form Download PDFInfo
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- CN207554255U CN207554255U CN201721479217.0U CN201721479217U CN207554255U CN 207554255 U CN207554255 U CN 207554255U CN 201721479217 U CN201721479217 U CN 201721479217U CN 207554255 U CN207554255 U CN 207554255U
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- winglet
- primary blades
- darrieus
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- current energy
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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
- Y02E10/20—Hydro energy
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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
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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Abstract
A kind of band winglet disclosed in the utility model and the up-front darrieus marine tidal-current energy runner bucket of shaped form, including primary blades, one end of primary blades is equipped with the first winglet, the other end of primary blades is equipped with the second winglet, first winglet and the second winglet are symmetrically distributed in the both ends of primary blades, camber angle and angle of sweep between first winglet and primary blades are 25 ° 35 °, and camber angle and angle of sweep between the second winglet and primary blades are 25 ° 35 °.The leading edge of blade by being designed to the shape of sine curve distribution and setting winglet in blade upper/lower terminal by the utility model, effectively delay the stall angle of blade, and the tip vortex at wing tip is weakened, reduces induced drag, improves the hydrodynamic performance of blade.
Description
Technical field
The utility model belongs to fluid machines technical field, and in particular to a kind of band winglet and shaped form leading edge
Darrieus marine tidal-current energy runner bucket.
Background technology
Darrieus tidal current energy water turbine is a kind of easy tide energy acquisition equipment, and water can be converted into rotating machinery
Energy.Darrieus tidal current energy water turbine has many advantages, such as structure and simple for process, can facilitate and realize autonomous production manufacture, but at present
The tidal current energy water turbine of the type is mainly using conventional prismatic blade, and conventional prismatic blade, which exists, enters stall angle area morning, blade
Therefore how the shortcomings that high lift-drag ratio range of angles of attack is small, postpones the stall angle of blade, it is ensured that blade is in larger angle-of-attack range
It is current researcher emphasis all of concern still to keep larger lift.
Utility model content
The purpose of this utility model is to provide a kind of band winglets and the up-front darrieus marine tidal-current energy runner of shaped form
Blade, can effectively delay the stall angle of blade, and weaken the tip vortex at wing tip, reduce induced drag, improve
The hydrodynamic performance of blade.
Technical solution is used by the utility model：A kind of band winglet and the up-front darrieus marine tidal-current energy of shaped form
Runner bucket, including primary blades, one end of primary blades is equipped with the first winglet, and the other end of primary blades is small equipped with the second wingtip
The wing, the first winglet and the second winglet are symmetrically distributed in the both ends of primary blades, between the first winglet and primary blades
Camber angle and angle of sweep be 25 ° -35 °, the camber angle and angle of sweep between the second winglet and primary blades be 25 ° -
35°。
The utility model is also characterized by：
The leading edge of primary blades is wavy, and the wavy concave-convex contour line of leading edge meets periodic SIN functionIts amplitude A=0.03b0, wavelength X=0.12b0, wherein b0For standard foline chord length；After primary blades
Edge tail portion is arranged to be in-line, and the stage casing of primary blades is without torsional angle.
The taper ratio of first winglet is 0.6, the 75% of a length of primary blades span length of the span of the first winglet, the
The taper ratio of two winglets is 0.6, the 75% of a length of primary blades span length of the span of the first winglet.
Breeze way is equipped between primary blades and the first winglet and between primary blades and the second winglet.
Breeze way is the prismatic blade that camber angle is 10 ° -15 °, and the length of breeze way is 0.5 times of main blade profile length.
The beneficial effects of the utility model are：By by the leading edge of blade be designed to sine curve be distributed shape and
Blade upper/lower terminal sets winglet, effectively delays the stall angle of blade, and weaken the tip vortex at wing tip, subtracts
Lack induced drag, improve the hydrodynamic performance of blade.
Description of the drawings
Fig. 1 is a kind of main view with winglet and the up-front darrieus marine tidal-current energy runner bucket of shaped form of the utility model
Figure；
Fig. 2 is a kind of structure with winglet and the up-front darrieus marine tidal-current energy runner bucket of shaped form of the utility model
Schematic diagram.
In figure, 1. first winglets, 2. primary blades, 3. second winglets, 4. breeze ways.
Specific embodiment
Below in conjunction with the accompanying drawings and the utility model is described in detail in specific embodiment.
The utility model provides a kind of band winglet and the up-front darrieus marine tidal-current energy runner bucket of shaped form, such as schemes
Shown in 1 and Fig. 2, including primary blades 2, one end of primary blades 2 is equipped with the first winglet 1, and the other end of primary blades 2 is equipped with second
Winglet 3, the first winglet 1 and the second winglet 3 are symmetrically distributed in the both ends of primary blades 2, the first winglet 1 with
Camber angle and angle of sweep between primary blades 2 are 25 ° -35 °, camber angle between the second winglet 3 and primary blades 2 and after
Sweep angle is 25 ° -35 °.
The leading edge of primary blades 2 is wavy, and the wavy concave-convex contour line of leading edge meets periodic SIN functionIts amplitude A=0.03b0, wavelength X=0.12b0, wherein b0For standard foline chord length；Leading edge is wavy
Lug boss peak foline maximum chord length be b0+ A, a length of b of the wavy recess portion minimum point foline smallest chord of leading edge0- A, main lobe
The section chord length ranging from b of any other position on piece 20- A~b0+ A, rear tail portion are arranged to be in-line, the stage casings of primary blades 2 without
Torsional angle.
The taper ratio of first winglet 1 is 0.6, a length of 2 span of the primary blades length of the span of the first winglet 1
75%, the taper ratio of the second winglet 3 is 0.6, the 75% of a length of 2 span of the primary blades length of the span of the second winglet 3.
Breeze way 4 is equipped between 2 and first winglet 1 of primary blades and between 2 and second winglet 3 of primary blades.
Breeze way 4 is the prismatic blade that camber angle is 10 ° -15 °, and the length of breeze way 4 is 0.5 times of 2 span of primary blades length.
Embodiment
As shown in Figures 1 and 2, each section foline of blade selects 0018 aerofoil profiles of NACA, single leaf in the present embodiment
Piece is made of primary blades 2, the first winglet 1, the second winglet 3 and breeze way 4；First winglet 1 and the second wingtip
Winglet 3 is symmetrically distributed in camber angle described in the both ends of primary blades 2 between first winglet 1 and primary blades 2 and angle of sweep is equal
It it is 30 °, the camber angle and angle of sweep between the second winglet 3 and primary blades 2 are 30 °.
2 leading edge of primary blades into wavy, has certain amplitude and wavelength, leading edge is wavy by several concave-convex Node connectedness
Concave-convex contour line meet periodic sinusoidal functional image.Primary blades 2 form the prismatic blade of 400mm for 32 sinusoidal cycles, main
2 rear tail portion of blade is arranged to be in-line, and the stage casing of primary blades 2 is without torsional angle.
Above-mentioned specific practice is as follows：
Step 1：2 top cross-sectional configurations foline NACA 0018 of primary blades is taken as basic foline, takes its chord length b to be
100mm, the chord length of top section basis foline is b0Position be sinusoidal equilbrium position (k π, 0)；
Step 2：If 2 spanwise of primary blades is z directions, chord length direction is x directions, and wing thickness direction is y directions,
2 signal period of primary blades is divided into 24 sections along spanwise, that is, z directions, be denoted as Z0, Z1, Z2, Z3 ... Z23.Z0 is cut
Face is that the basic foline of step 1 corresponds to sinusoidal equilbrium position.Take sine curve amplitude A=0.03b0=3mm, wave
Long λ=0.12b0=12mm.Obtain wavy SIN function
Lug boss peak is that foline maximum chord length is bmax=b0+ A=103mm, recess portion minimum point are foline minimum chord lengths
For bmin=b0- A=97mm, the section chord length ranging from b of any other positionmax<bz<bmin.Distinguish according to following reference formula
Calculate the 3D shape and coordinate value of each section aerofoil profile.
Bzi=f (zi)+b0
Xi=Zi+ (bzi/b0)x0
Yi=(bzi/b0)y0
Zi=Zi
Wherein, x0, y0For the corresponding coordinate value of basic blade.B is selected in the present embodiment0=100mm.
Step 3：The aerofoil profile in each section by curve group be smoothly connected, finally obtains the three-dimensional of primary blades 2
Figure.
First winglet 1 and the second winglet 3 are that a taper ratio is 0.6, a length of 30mm of the span
The small fin of NACA0018, vanelets leaf tip chord length are 60mm, and root chord length is 100mm；As extension stage casing main lobe sheet body
Addition vanelets；It is rigidly connected respectively with primary blades 2, wherein the first winglet 1 is along 2 spanwise of primary blades to having a downwarp
Song, and it is upturned along 2 spanwise of primary blades with the second winglet 3.
Buffering is equipped between 2 and first winglet 1 of primary blades and between 2 and second winglet 3 of the primary blades
Section 4；Breeze way 4 is that length is 20mm, and camber angle is 15 ° of a bit of prismatic blade.
Primary blades 2 are integrally formed, and select the organic glass cutting processing that thickness is 5mm.
First winglet 1 and the second winglet 3 are connect with primary blades 2 by breeze way 4, the connection between them
It is that the smooth rigid with given bending angle connects.
Band winglet and the up-front darrieus marine tidal-current energy runner bucket of shaped form are opened up to center in blade and pass through weldering
It connects or is fastened on support arm by screw, is attached by support arm and live spindle.It is fixed partially so as to form novel vertical pivot
The straight leaf darrieus tidal current energy water turbine of angie type.
The utility model has the following advantages：By the way that the leading edge of blade to be designed to the shape of sine curve distribution and in leaf
Piece upper/lower terminal sets winglet, effectively delays the stall angle of blade, and weaken the tip vortex at wing tip, reduces
Induced drag improves lift resistance ratio, improves the hydrodynamic performance of blade.
Claims (5)
1. a kind of band winglet and the up-front darrieus marine tidal-current energy runner bucket of shaped form, which is characterized in that including primary blades
(2), one end of the primary blades (2) is equipped with the first winglet (1), and the other end of the primary blades (2) is equipped with the second wingtip
Winglet (3), first winglet (1) and the second winglet (3) are symmetrically distributed in the both ends of primary blades (2), and described the
Camber angle and angle of sweep between one winglet (1) and primary blades (2) are 25 ° -35 °, second winglet (3) with
Camber angle and angle of sweep between primary blades (2) are 25 ° -35 °.
2. a kind of band winglet as described in claim 1 and the up-front darrieus marine tidal-current energy runner bucket of shaped form, special
Sign is that the leading edge of the primary blades (2) is wavy, and the wavy concave-convex contour line of leading edge meets periodic SIN functionIts amplitude A=0.03b0, wavelength X=0.12b0, wherein b0For standard foline chord length；Primary blades (2)
Rear tail portion is arranged to be in-line, and the stage casing of primary blades (2) is without torsional angle.
3. a kind of band winglet as described in claim 1 and the up-front darrieus marine tidal-current energy runner bucket of shaped form, special
Sign is that the taper ratio of first winglet (1) is 0.6, a length of primary blades of the span (2) wing of the first winglet (1)
The 75% of length, the taper ratio of second winglet (2) is 0.6, a length of primary blades of the span of the first winglet (1)
(2) the 75% of span length.
4. a kind of band winglet as described in claim 1 and the up-front darrieus marine tidal-current energy runner bucket of shaped form, special
Sign is, between the primary blades (2) and the first winglet (1) and between the primary blades (2) and the second winglet (3)
It is equipped with breeze way (4).
5. a kind of band winglet as claimed in claim 4 and the up-front darrieus marine tidal-current energy runner bucket of shaped form, special
Sign is that the breeze way (4) is the prismatic blade that camber angle is 10 ° -15 °, and the length of the breeze way (4) is primary blades (2)
0.5 times of span length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721479217.0U CN207554255U (en) | 2017-11-08 | 2017-11-08 | A kind of band winglet and the up-front darrieus marine tidal-current energy runner bucket of shaped form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721479217.0U CN207554255U (en) | 2017-11-08 | 2017-11-08 | A kind of band winglet and the up-front darrieus marine tidal-current energy runner bucket of shaped form |
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| CN207554255U true CN207554255U (en) | 2018-06-29 |
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| CN201721479217.0U Active CN207554255U (en) | 2017-11-08 | 2017-11-08 | A kind of band winglet and the up-front darrieus marine tidal-current energy runner bucket of shaped form |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050001A (en) * | 2017-11-08 | 2018-05-18 | 西安理工大学 | A kind of bionic blade of the vertical-axis tide energy hydraulic turbine |
| CN110863939A (en) * | 2019-11-20 | 2020-03-06 | 杭州乐守科技有限公司 | Tidal power generation device for coastal region and use method thereof |
| CN112298549A (en) * | 2020-10-30 | 2021-02-02 | 北京航空航天大学 | Tilt rotor with bionic wavy leading edge and tilt rotor aircraft |
-
2017
- 2017-11-08 CN CN201721479217.0U patent/CN207554255U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050001A (en) * | 2017-11-08 | 2018-05-18 | 西安理工大学 | A kind of bionic blade of the vertical-axis tide energy hydraulic turbine |
| CN108050001B (en) * | 2017-11-08 | 2019-09-27 | 西安理工大学 | A kind of bionic blade of the vertical-axis tide energy hydraulic turbine |
| CN110863939A (en) * | 2019-11-20 | 2020-03-06 | 杭州乐守科技有限公司 | Tidal power generation device for coastal region and use method thereof |
| CN110863939B (en) * | 2019-11-20 | 2021-04-20 | 利辛县雨若信息科技有限公司 | Tidal power generation device for coastal region and use method thereof |
| CN112298549A (en) * | 2020-10-30 | 2021-02-02 | 北京航空航天大学 | Tilt rotor with bionic wavy leading edge and tilt rotor aircraft |
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