CN201155424Y - Cross axis wind motor with S -type blade tip winglet - Google Patents
Cross axis wind motor with S -type blade tip winglet Download PDFInfo
- Publication number
- CN201155424Y CN201155424Y CNU2008200552261U CN200820055226U CN201155424Y CN 201155424 Y CN201155424 Y CN 201155424Y CN U2008200552261 U CNU2008200552261 U CN U2008200552261U CN 200820055226 U CN200820055226 U CN 200820055226U CN 201155424 Y CN201155424 Y CN 201155424Y
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- China
- Prior art keywords
- blade
- sharp
- horizontal
- winglet
- windmill
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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.)
- Expired - Fee Related
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model relates to a wind-force power generation device, in particular relates to a horizontal-shaft windmill with an S-shaped blade sharp fin, and especially relates to a horizontal-shaft windmill blade-sharp tooth-shaped small-fin device that has the automatic stallout adjusting function, and can improve the pneumatic property, the structural dynamic property, the blade surface loading distribution and the blade-sharp eddy shedding frequency of the windmill, and can reduce the wind-wheel radiation noise. The device comprises a blade (5), a wheel boss (6), an engine room (7) and a tower seat (8), wherein, a small fin is arranged at the sharp of the blade that is arranged on the wine wheel, and is characterized in that the blade-sharp small fin (4) is in a flat-board shape and is similar to a triangle; an inclined-edge part (S) is in wavilness and is similar to an S shape. The wind-force power generation device has the advantages that the premise of being free from modifying the structural parameters of the original windmill, the comprehensive performance of the windmill can be improved only by simply mounting a flat-board-shaped tooth-shaped small fin at the blade sharp of the windmill. Moreover, the blade-sharp tooth-shaped small fin adopts the flat-board structure, thereby the structure is simple, the craftwork flow procedures are short, the procedures are less, the manufacturing cost is low, and the installation is simple and convenient.
Description
Technical field
The utility model relates to wind power plant, particularly a kind of horizontal-shaft wind turbine that has S type tip vane.Relate to a kind ofly have automatic stall-adjusted function more specifically, and can improve that wind mill wind wheel aerodynamic characteristic, Structure dynamic characteristics, blade surface dynamic load distribute, blade tip vortex shedding frequency and reduce the little swing device of horizontal-shaft wind turbine blade tip S type of wind wheel radiated noise.
Background technique
Wind energy will play a significant role in the energy system in future as a kind of renewable energy sources of cleaning.Closely during the last ten years, world's wind-power electricity generation is with annual growth 30% left and right sides high speed development.In China, the wind energy conversion system technical research has also obtained progress faster, has successively developed a series of big-and-middle-sized grid type wind-powered electricity generation unit of hundred multikilowatts to MW class, and wherein part of generating units has realized commercialization.
The open at present patent documentation close with model utility, as JP2004084590, CN1308594C, CN2270125Y, US4362469, US4093402A, US4003676A, winglet adopts the aerofoil profile identical with wind wheel blade mostly in these documents, having changed the distribution in tail flow field of wind energy conversion system and the circular rector of blade tip distributes, reduced induced drag, improve the efficient of wind energy conversion system, but winglet is an aerofoil profile owing to what adopt in the document, so structure is complicated, operation is many, the fabricating cost height, difficulty is installed
Summary of the invention
The purpose of this utility model is at complex structure, the difficulty of processing of existing wind wheel tip vane big, technical deficiencies such as fabricating cost height, installation difficulty, a kind of horizontal-shaft wind turbine of the S of having type tip vane is provided, stalling characteristics, aerodynamic characteristic, Structure dynamic characteristics, blade surface dynamic load that this S type winglet can improve wind mill wind wheel in this model utility distribute and reduce the wind wheel radiated noise, make the wind energy conversion system energy saving, raise the efficiency.
The utility model purpose realizes being finished by following technological scheme:
The utility model comprises blade 5, wheel hub 6, cabin 7, tower seat 8, and the blade tip place of wind wheel upper blade is provided with winglet, it is characterized in that, tip vane 4 is plate and is similar to triangle, and hypotenuse part S is wavy; Described to be wavy winglet curve hypotenuse S be arc transition, circular arc design corner α=30 °-45 °; The attachment face M of described winglet 1 overlaps with blade tip aerofoil profile section, leading edge straight flange L mounting points is positioned at blade tip aerofoil profile leading edge point a place, attachment face flanging B length is 0.7-0.9 times of blade tip aerofoil profile chord length c, leading edge straight flange L length is 0.9-1.2 times of attachment face flanging B length, back subtended angle β=35 °-55 °; The thickness of the sheet material of described winglet 1 is 0.1-0.4 times of blade tip aerofoil profile maximum ga(u)ge; The material of described S type tip vane 4 is plate timber or glass fibre reinforced plastics or strengthens aluminium sheet.
The utility model has the advantages that under the prerequisite of original wind energy conversion system structural parameter not being changed, by the combination property that S type tip vane improves wind energy conversion system simply being installed at wind energy conversion system blade tip place.S type tip vane in the utility model also makes the wind energy conversion system of this model utility have automatic stall-adjusted function on above function basis, has improved the Structure dynamic characteristics of wind energy conversion system, moving frequency curve trend when changing wind wheel work makes its trend that disengaging rotating speed resonance region is arranged, improved the distribution of blade surface dynamic load, blade tip vortex shedding frequency and has reduced the wind wheel radiated noise.And the S type tip vane in the utility model is simple in structure, technological process is short, operation is few, fabricating cost is low, simple installation.
Description of drawings
Fig. 1 is a horizontal-shaft wind turbine overall structure schematic representation of the present utility model
Fig. 2 is the structural representation of the utility model S type tip vane
Fig. 3 is the installation position schematic representation of the utility model S type tip vane
Fig. 4 installs the A-A generalized section for the utility model
Embodiment
Below in conjunction with drawings and Examples the technical solution of the utility model is further described
1,2,3--center of arc point, 4-winglet, 5-pneumatic equipment blades made, 6-wheel hub, 7-cabin, 8-pylon, 9-blade suction surface, 10-blade pressure surface, I-come flow path direction, II-wind energy conversion system sense of rotation, L-leading edge straight flange, S-streamline hypotenuse, B-attachment face flanging, α-circular arc design corner, R-radius of arc, r1, r2-knuckle radius, M-attachment face, I-for coming flow path direction, β-back subtended angle, a-aerofoil profile leading edge point, b-airfoil trailing edge point, the c-blade tip aerofoil profile string of a musical instrument as accompanying drawing 1～4 signal, the label among the figure is represented respectively:.
The utility model embodiment's overall structure mainly is made up of blade 5, wheel hub 6, cabin 7, tower seat 8 as shown in Figure 1.Wind wheel transmission device, generator, regulating device and electric adjusted device thereof, electrical control equipment, oil hydraulic pump etc. are wherein arranged in the cabin 4.The utility model comprises blade 5, wheel hub 6, cabin 7, tower seat 8, and the blade tip place of wind wheel upper blade is provided with winglet, and tip vane 4 is plate and is similar to triangle, and hypotenuse part S is wavy; Described to be wavy winglet curve hypotenuse S be arc transition, circular arc design corner α=35 °, back subtended angle β=35 °; The attachment face M of described winglet 1 overlaps with blade tip aerofoil profile section, and leading edge straight flange L mounting points is positioned at blade tip aerofoil profile leading edge point a place, and attachment face flanging B length is 0.9 times of blade tip aerofoil profile chord length c, and leading edge straight flange L length is 1 times of attachment face flanging B length.The thickness of making this winglet sheet material is 0.3 times of blade tip aerofoil profile maximum ga(u)ge.Center of arc's point 3 is 1,2 two a mid point, and the radius of arc R of winglet, knuckle radius r1, r2 are that the center of circle makes winglet end points and the tangent circular arc of circular arc R on the sideline.Wherein, 1 is the intersection point in circular arc design angle line and winglet sideline, and 2 is the center of circle for circular arc design angle line and with the O point.This S type winglet is in shape along coming flow path direction to roll over backward, not under the prerequisite that original wind energy conversion system structural parameter are changed, by this S type tip vane is installed at wind energy conversion system blade tip place, and choose suitable winglet parameter area, can improve the combination property of wind mill wind wheel.The material of S type tip vane (4) is plate timber or glass fibre reinforced plastics or strengthens aluminium sheet.The position of S type winglet: at pneumatic equipment blades made blade tip place, along coming flow path direction to roll over backward, attachment face flanging B overlaps with the blade tip aerofoil profile string of a musical instrument, and leading edge straight flange L mounting points is positioned at blade tip aerofoil profile leading edge point a place.
Though below done to elaborate according to design of the utility model and model utility purpose and enforcement with reference to accompanying drawing; but related domain the common technique personnel can recognize; under the precondition that does not break away from the claim limited range; still can make various improvement and conversion to the utility model, and this improvement and conversion are used still and are belonged to protection domain of the present utility model.
Claims (5)
1, a kind of horizontal-shaft wind turbine that has S type tip vane, comprise blade (5), wheel hub (6), cabin (7), tower seat (8), the blade tip place of wind wheel upper blade is provided with winglet, it is characterized in that, tip vane (4) is plate and is similar to triangle, and hypotenuse part (S) is wavy.
2, a kind of horizontal-shaft wind turbine that has S type tip vane according to claim 1 is characterized in that, the described wavy winglet curve hypotenuse (S) that is is arc transition, circular arc design corner α=30 °-45 °, back subtended angle β=35 °-55 °.
3, a kind of horizontal-shaft wind turbine that has S type tip vane according to claim 1, it is characterized in that, the attachment face (M) of described winglet (1) overlaps with blade tip aerofoil profile section, leading edge straight flange (L) mounting points is positioned at blade tip aerofoil profile leading edge point (a) and locates, attachment face flanging (B) length is 0.7-0.9 times of blade tip aerofoil profile chord length (c), and leading edge straight flange (L) length is 0.9-1.2 times of attachment face flanging (B) length.
4, a kind of horizontal-shaft wind turbine that has S type tip vane according to claim 1 is characterized in that, the thickness of the sheet material of described winglet (1) is 0.1-0.4 times of blade tip aerofoil profile maximum ga(u)ge.
5, a kind of horizontal-shaft wind turbine that has S type tip vane according to claim 1 is characterized in that, the material of described S type tip vane (4) is plate timber or glass fibre reinforced plastics or strengthens aluminium sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200552261U CN201155424Y (en) | 2008-01-30 | 2008-01-30 | Cross axis wind motor with S -type blade tip winglet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200552261U CN201155424Y (en) | 2008-01-30 | 2008-01-30 | Cross axis wind motor with S -type blade tip winglet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201155424Y true CN201155424Y (en) | 2008-11-26 |
Family
ID=40103208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200552261U Expired - Fee Related CN201155424Y (en) | 2008-01-30 | 2008-01-30 | Cross axis wind motor with S -type blade tip winglet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201155424Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047078A (en) * | 2011-10-14 | 2013-04-17 | 通用电气公司 | Methods for using site specific wind conditions to determine when to install a tip feature on a wind turbine rotor blade |
| CN104863791A (en) * | 2015-05-20 | 2015-08-26 | 上海交通大学 | Novel wind turbine blade |
-
2008
- 2008-01-30 CN CNU2008200552261U patent/CN201155424Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047078A (en) * | 2011-10-14 | 2013-04-17 | 通用电气公司 | Methods for using site specific wind conditions to determine when to install a tip feature on a wind turbine rotor blade |
| CN104863791A (en) * | 2015-05-20 | 2015-08-26 | 上海交通大学 | Novel wind turbine blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081126 Termination date: 20120130 |