CN107366605A - A kind of horizontal axis wind turbine - Google Patents
A kind of horizontal axis wind turbine Download PDFInfo
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- CN107366605A CN107366605A CN201710331880.4A CN201710331880A CN107366605A CN 107366605 A CN107366605 A CN 107366605A CN 201710331880 A CN201710331880 A CN 201710331880A CN 107366605 A CN107366605 A CN 107366605A
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- 238000010168 coupling process Methods 0.000 claims abstract description 17
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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
-
- 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
- F03D1/0608—Rotors characterised by their aerodynamic shape
- F03D1/0633—Rotors characterised by their aerodynamic shape of the blades
-
- 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
- F05B2240/301—Cross-section characteristics
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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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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of horizontal axis wind turbine, has rotor of the radius between 0.6m and 1.5m, wherein：The rotor (3) includes center hub (4), and the blade (5) between two and six is rigidly attached in the case where there is constant tilt angle in the center hub (4)；Each blade (5) has an active length between 450mm and 1400mm, and including：Coupling part (13), the coupling part (13) are fixed on wheel hub (4)；Between base segments (7), the base segments (7) are formed according to type face SG6040, and development length is the 10% and 20% of total length；Center section (16), the center section (16) extend since base segments (7)；And end sections (8), the end sections (8) are formed according to type face SG6043, and development length for total length 70% and 80% between.The horizontal axis wind turbine ensures more efficient when wind speed changes and evenly.
Description
Technical field
The present invention relates to a kind of horizontal axis wind turbine, has rotor of the radius between 0.6m and 1.5m, especially
It is such wind turbine, it has the blade for having constant tilt angle relative to rotor hub, and has variable turn
Speed.
Background technology
Horizontal axis wind turbine includes supporting structure, and the supporting structure is generally made up of single vertical vertical part,
Rotor is connected on the supporting structure in cantilever fashion, and the rotor rotates around horizontal axis.Supporting structure also supports TRT,
The TRT is by rotor come Mechanical Driven.The TRT is including mechanically and electrically (slow axis, rotor are assemblied in the slow axis to part
On；Gear-box；Fast axle, generator and the fast axis connection；Inverter etc.).
Rotor includes center hub rigidly connected with slow axis and fixed multiple blades on the rotor again.
Rotor can be the type with fixed blade and the type with movable blades.In the previous case,
Blade has the fixed position (therefore, angle of inclination does not change over time) relative to wheel hub, and in the latter case, blade
It can be rotated around corresponding radial rotary axis, the radial rotary axis is arranged in the plane vertical with the rotation axis of rotor,
So, they can change its angle of inclination, and increase or do not increase incidence angle of the wind facies for them.
Generally, the scheme with movable blades is used for relatively large turbine (that is, power is equal at least about several
Ten kW), and for exporting the turbine of (several kW) with small-power, blade is usually fixed.In fact, although use can transport
Movable vane piece enables to the angle of inclination of blade to adapt to wind speed, so as to improve the efficiency of turbine, but with the production of turbine
Associated bigger cost to have the schemes of movable blades for small turbomachine and unfavorable with management, therefore this is small-sized
Turbine is manufactured into fixed blade.
As it was previously stated, the present invention is just used for such turbine, particularly the root diameter of the turbine is in 1.2m
Between 3m, the usual rated power with several kW.
Although such turbine itself be, it is known that their performances that can ensure at present be not it is optimal,
Particularly in the case where wind speed changes relative to desin speed.
In fact, although each turbine usually can ensure the good efficiencies for particular design wind speed, but it is once real
Border speed deviations desin speed, performance will be decreased obviously.
The content of the invention
Herein, the technical purpose for forming present invention basis is to provide a kind of horizontal axis wind turbine, has half
Rotor of the footpath between 0.6m and 1.5m, the horizontal axis wind turbine overcome disadvantages mentioned above.
Particularly, technical purpose of the invention is to provide the horizontal axis of the rotor between 0.6m and 1.5m with radius
Wind turbine, the horizontal axis wind turbine ensure more efficient when wind speed changes and evenly (with prior art
Wind turbine is compared).
The technical purpose and shown target are essentially by a kind of water with rotor of the radius between 0.6m and 1.5m
Flat axis wind turbine is realized.
A kind of horizontal axis wind turbine, there is rotor of the radius between 0.6m and 1.5m, wherein：
- wind turbine includes：Supporting structure, rotor can revolve in the case where there is horizontal axis of rotation with the supporting structure
Turn ground connection；And TRT, the TRT is by rotor Mechanical Driven；
- rotor includes center hub, and the blade between two and six is in the case where there is constant tilt angle with being somebody's turn to do
The peripheral rigid connection of center hub；
- each blade has the principal spread direction relative to rotation axis radial directed, and leaves rotation along principal spread direction
Axis includes one by one：
Coupling part, the coupling part is located at the first end of blade, and is fixed in center hub；
Base segments, the base segments extend since coupling part；
Center section, the center section extend since base segments；And
End sections, the end sections extend to the second end of blade since center section；
- for each blade, the length of blade can recognize that for equal to base segments, center section and end sections along main extension
The total length of orientation measurement, the length of the blade is between 450mm and 1400mm；
Wherein：
Base segments along the length that principal spread direction extends between the 10% of length of blade and 20%, and according to type face
SG6040 is formed；
End sections along the length that principal spread direction extends between the 70% of length of blade and 80%, and according to type face
SG6043 is formed；And
Center section between the 5% of length of blade and 15%, and is formed as having along the length that principal spread direction extends
Along the changeable type face of principal spread direction, the center section causes the type face SG6040 of base segments and the type face of end sections
SG6043 connections.
Described horizontal axis wind turbine, the base segments of each blade have：The inside base being connected with coupling part
Portion type face, the inner base type face include main string, and the main string is at an angle of Φ, the angle relative to the planar shaped vertical with rotation axis
Spend Φ and be equal to 32 ° ± 5%, and the ratio of the length of the main string and the rotor radius is equal to 0.149 ± 5%；And and pars intermedia
Divide the outer base portion part of connection, the outer base portion part includes main string, and the main string is relative to the plane vertical with rotation axis
Form angle, φ, the angle, φ is equal to 19.5 ° ± 5%, and the ratio of the length of the main string and the rotor radius be equal to 142 ±
5%.
Described horizontal axis wind turbine, base segments it since inner base type face along principal spread direction
There is the first central base portion type face at 1/3rd of length, the first central base portion type face includes main string, the main string relative to
The planar shaped vertical with rotation axis is at an angle of Φ, and the angle, φ is equal to 27 ° ± 5%, and the half of the length of the main string and rotor
The ratio in footpath is equal to 0.148 ± 5%；Base segments have the second central base portion type face at 2/3rds of the length along it, should
Second central base portion type face includes main string, and the main string is at an angle of Φ, the angle, φ relative to the planar shaped vertical with rotation axis
Equal to 23 ° ± 5%, and the ratio of the length of the main string and the rotor radius is equal to 0.147 ± 5%.
Described horizontal axis wind turbine, the base segments of each blade have：The inside base being connected with coupling part
Portion type face, the inner base type face include main string, and the main string is at an angle of Φ, the angle relative to the planar shaped vertical with rotation axis
Spend Φ and be equal to 32 ° ± 2%, and the ratio of the length of the main string and the rotor radius is equal to 0.149 ± 2%；And and pars intermedia
Divide the outer base portion part of connection, the outer base portion part includes main string, and the main string is relative to the plane vertical with rotation axis
Form angle, φ, the angle, φ is equal to 19.5 ° ± 2%, and the ratio of the length of the main string and the rotor radius be equal to 142 ±
2%.
Described horizontal axis wind turbine, base segments it since inner base type face along principal spread direction
There is the first central base portion type face at 1/3rd of length, the first central base portion type face includes main string, the main string relative to
The planar shaped vertical with rotation axis is at an angle of Φ, and the angle, φ is equal to 27 ° ± 2%, and the half of the length of the main string and rotor
The ratio in footpath is equal to 0.148 ± 2%；Base segments have the second central base portion type face at 2/3rds of the length along it,
The second central base portion type face includes main string, and the main string is at an angle of Φ, the angle relative to the planar shaped vertical with rotation axis
Φ is equal to 23 ° ± 2%, and the ratio of the length of the main string and the rotor radius is equal to 0.147 ± 2%.
Described horizontal axis wind turbine, the end sections of each blade have：The inner type being connected with center section
Face, the inner type face include main string, and the main string is at an angle of Φ relative to the planar shaped vertical with rotation axis, and the angle, φ is equal to
15.5 ° ± 5%, and the ratio of the radius of the length of the main string and rotor is equal to 0.111 ± 5%；And form the second of blade
The outer end type face at end, the outer end type face include main string, and the main string is at an angle of Φ relative to the planar shaped vertical with rotation axis, should
Angle, φ is equal to 1.75 ° ± 5%, and the ratio of the radius of the length of the main string and rotor is equal to 0.050 ± 5%.
Described horizontal axis wind turbine, end sections it since inner type face along the length of principal spread direction
1/3rd at there is the first medial ends type face, the first medial ends type face includes main string, the main string relative to rotation
The vertical planar shaped of shaft axis is at an angle of Φ, and the angle, φ is equal to 7.9 ° ± 5%, and the radius of the length of the main string and rotor
Than equal to 0.081 ± 5%, end sections have the second medial ends type face at 2/3rds of the length along it, and this second
Medial ends type face includes main string, and the main string is at an angle of Φ relative to the planar shaped vertical with rotation axis, and the angle, φ is equal to
3.80 ° ± 5%, and the ratio of the radius of the length of the main string and rotor is equal to 0.062 ± 5%.
Described horizontal axis wind turbine, the end sections of each blade have：The inner type being connected with center section
Face, the inner type face include main string, and the main string is at an angle of Φ relative to the planar shaped vertical with rotation axis, and the angle, φ is equal to
15.5 ° ± 2%, and the ratio of the radius of the length of the main string and rotor is equal to 0.111 ± 2%；And form the second end of blade
Outer end type face, the outer end type face includes main string, and the main string is at an angle of Φ, the angle relative to the planar shaped vertical with rotation axis
Spend Φ and be equal to 1.75 ° ± 2%, and the ratio of the radius of the length of the main string and rotor is equal to 0.050 ± 2%.
Described horizontal axis wind turbine, end sections it since inner type face along the length of principal spread direction
1/3rd at there is the first medial ends type face, the first medial ends type face includes main string, the main string relative to rotation
The vertical planar shaped of shaft axis is at an angle of Φ, and the angle, φ is equal to 7.9 ° ± 2%, and the radius of the length of the main string and rotor
Than equal to 0.081 ± 2%, end sections have the second medial ends type face at 2/3rds of the length along it, and this second
Medial ends type face includes main string, and the main string is at an angle of Φ relative to the planar shaped vertical with rotation axis, and the angle, φ is equal to
3.80 ° ± 2%, and the ratio of the radius of the length of the main string and rotor is equal to 0.062 ± 2%.
Described horizontal axis wind turbine, center section extend to end portion from the outer base portion type face of base segments
The inner type face divided, and the center section has at the half since base segments along the length of principal spread direction in center
Between type face, the center osculant face is obtained by the interpolation in outer base portion type face and inner type face.
Brief description of the drawings
By below with reference to the accompanying drawings to the horizontal axis wind turbine of the rotor with radius between 0.6m and 1.5m
(shown in the accompanying drawings) on several preferable, non-limiting examples detailed descriptions, other spies of the present invention will be become apparent from
Seek peace advantage, in accompanying drawing：
Fig. 1 is the diagrammatic elevation view according to the wind turbine of the present invention；
Fig. 2 and 3 is two different axonometric drawings of the rotor blade of wind turbine made according to the present invention；
Fig. 4 is the enlarged detail of the coupling part of Fig. 3 blade；
Fig. 5 is an also axonometric drawing for Fig. 2 and Fig. 3 blade；
Fig. 6 is the enlarged detail of the coupling part of Fig. 5 blade, and protrusion illustrates two retaining elements；
Fig. 7 illustrates Fig. 2 blade, and protrusion illustrates multiple cross sections, and these cross sections are marked by the letter from A to U
Note；For each cross section, represented from the relative distance of rotor center referring also to the rotor with unit radius；
Fig. 8 is the sectional view of A-A along Fig. 7 blade；The figure also protrusion illustrates two reference axis, for defining the horizontal stroke
The type face in section；
Fig. 9 a to 9u illustrate Fig. 7 blade according to the cross section of each line from A-A to U-U (lowercase of figure number with
The capitalization of relevant cross section is consistent).
Embodiment
With reference to above-mentioned accompanying drawing, label 1 represents whole horizontal axis wind turbine made according to the present invention.
Wind turbine 1 includes supporting structure 2, and rotor 3 is rotatably attached with the supporting structure 2, and the rotor has
Radius and horizontal axis of rotation between 0.6m and 1.5m.Particularly, rotor 3 includes center hub 4, two and six it
Between blade 5 be rigidly fixed on the periphery of the center hub 4, preferably between three and five blades 5.TRT
(known type, therefore be not shown) is by rotor 3 come Mechanical Driven.
In a preferred embodiment, on the one hand, supporting structure 2 is made up of single vertical vertical part, the vertical vertical part
It is fixed in use at bottom in ground or another structure, on the other hand, the wheel hub 4 of rotor 3 is rigidly fixed to can phase
On the slow axis rotated for supporting structure 2.In a known way, slow axis by gear-box and with fast axle mechanically connect, generator with
The fast axis connection.The electricity output of generator is connected on the inverter being connected with power network.Slow axis, gearbox, fast axle, generator and
Inverter is all the part of TRT.
As it was previously stated, in the context of the present invention, each blade 5 is connected in fixed position with wheel hub 4, and all leaves
Piece 5 has identical angle of inclination around the axis parallel with principal spread direction relative to the plane vertical with rotation axis.
As shown in Figure 2, each blade 5 includes the first end 6 and the principal spread direction (water in Fig. 2 being fixed on wheel hub 4
Square to), and positioned one by one along principal spread direction including four separate sections, this four separate sections.Each blade 5
Principal spread direction also relative to rotor 3 rotation axis radial directed.
On aerodynamics, each blade 5 includes two major parts, that is to say, that base segments 7 and end sections 8,
And the end sections 8 than base segments 7 further from rotation axis.Base segments 7 are characterised by that it is according to aerodynamic profile
Face SG6040 shapes, and the end sections 8 (end sections 8 form the second end 9 of blade 5) are characterised by it according to sky
Aerodynamics type face SG6043 shapes.
It should be noted that in the context of this specification and the appended claims, it is adapted, defines with the term of department
" type face " will refer to describe blade 5 cross-sectional profiles line 10, the cross section by it is parallel with rotation axis and with main extension side
Determined to vertical sectional plane.It is well known that various face can be come really for its population proportion in a manner of nondimensional
Fixed (so that measured value is related to the length of its main string 11, that is, its maximum length string).For example, as shown in Figure 7, this
It is to refer to two Cartesian reference axles (x and y) to complete, the two Cartesian reference axles intersect in the end of main string 11, its
In one (x-axis in Fig. 7) overlapped with main string 11.Particularly, for each point in type face, x and y coordinates are provided as and main string 11
Length c is related.
Once it is determined that the shape in type face (its ratio), it just can be by simply representing the length c of its main string 11
Value and main string 11 uniquely identified relative to the inclination angle (angle, φ) of reference direction 12, the reference direction 12 preferably pair
The main strings 11 of Ying Yuyu are coplanar and the direction that is in the plane vertical with the rotation axis of rotor 3.Therefore, these are only considered below
Parameter is come the various pieces for determining blade 5.
Two type face SG6040 and SG6043 dimensionless point trend (x/c, y/c) represents in table 1, for directly joining
Examine.
Between base segments 7 and wheel hub 4, blade 5 also includes coupling part 13, and the coupling part 13 forms blade 5
First end 6, and be fixed on wheel hub 4.Transition between base segments 7 and coupling part 13 usually can be from according to type face
(in the embodiment shown, different types of type is identified at type face to the transformation in different types of type face that SG6040 is formed
Face by two separation projections 14 form, respectively convex to form can be fixed to by suitable retaining element 15 it is convex on wheel hub 4
Edge).
On the contrary, center section 16, between base segments 7 and end sections 8, preferably, the center section 16 has edge
The variable type face of principal spread direction, and the type face SG6040 of base segments 7 is connected with the type face SG6043 of end sections 8.
Base segments 7 have inner base type face at its part closest to rotation axis, and the base segments 7 are at it
There is outer base portion type face at the part farthest from rotation axis.
Further, end sections 8 have inner type face at its part closest to rotation axis, and the end sections 8 exist
Its part farthest from rotation axis (part forms the second end 9 of blade 5) place has outer end type face.
The center section 16 extended between the outer base portion type face of base segments 7 and the inner type face of end sections 8 exists
Have at along the half of the length of principal spread direction and base portion 10 (it is right to be preferably by the interpolation in outer base portion type face and inner type face
Several classes of types) and the center osculant face of acquisition.
For each blade 5, additionally it is possible to determine that the length of blade 5 is equal to base segments 7, center section 16 and end sections 8
Total length, measured along principal spread direction.According to the present invention, the length of the blade 5 is between 450mm and 1400mm.
Moreover, according to the present invention, base segments 7 along the length that principal spread direction extends the length of blade 5 10% He
Between 20%, preferably between 12% and 18%, and end sections 8 along the length that principal spread direction extends in the length of blade 5
70% and 80% between, preferably between 72% and 78%.
Further, center section 16 along the length that principal spread direction extends between the 5% and 20% of the length of blade 5.
Moreover, according to multiple preferred embodiments：
- inner base type face includes main string 11, and the main string 11 is at an angle of Φ relative to the planar shaped vertical with rotation axis,
The angle, φ is equal to 32 ° ± 5%, preferably ± 2%, and the ratio of the radius of the length of the main string 11 and rotor 3 be equal to 0.149 ±
5%, preferably ± 2%；
- outer base portion type face includes main string 11, and the main string 11 is at an angle of Φ relative to the planar shaped vertical with rotation axis,
The angle, φ is equal to 19.5 ° ± 5%, preferably ± 2%, and the ratio of the radius of the length of the main string 11 and rotor 3 be equal to 142 ±
5%, preferably ± 2%；
- inner type face includes main string 11, and the main string 11 is at an angle of Φ, the angle relative to the planar shaped vertical with rotation axis
Φ is spent equal to 15.5 ° ± 5%, preferably ± 2%, and the length of the main string 11 and the ratio of the radius of rotor 3 are equal to 0.111 ± 5%,
It is preferred that ± 2%；
- outer end type face includes main string 11, and the main string 11 is at an angle of Φ, the angle relative to the planar shaped vertical with rotation axis
Φ is spent equal to 1.75 ° ± 5%, preferably ± 2%, and the length of the main string 11 and the ratio of the radius of rotor 3 are equal to 0.050 ± 5%,
It is preferred that ± 2%.
Moreover, in some preferred embodiments, base segments 7 it along principal spread direction length 1/3rd at
(since inner base type face) has the first central base portion type face, and the first central base portion type face includes main string 11, main string 11
Φ is at an angle of relative to the planar shaped vertical with rotation axis, the angle, φ is equal to 27 ° ± 5%, is preferably ± 2%, and the master
The length of string 11 and the ratio of the radius of rotor 3 are equal to 0.148 ± 5%, are preferably ± 2；Base segments 7 are in three points along its length
Two at there is the second central base portion type face, the second central base portion type face includes main string 11, main string 11 relative to rotary shaft
The vertical planar shaped of line is at an angle of Φ, and the angle, φ is equal to 23 ° ± 5%, preferably ± 2%, and the length of the main string 11 and rotor 3
Radius ratio be equal to 0.147 ± 5%, preferably ± 2%.
Moreover, it is preferred that be, end sections 8 it along principal spread direction length 1/3rd at (from inner end type
Face starts) there is the first medial ends type face, the first medial ends type face includes main string 11, main string 11 relative to rotary shaft
The vertical planar shaped of line is at an angle of Φ, and the angle, φ is equal to 7.9 ° ± 5%, preferably ± 2%, and the length and rotor of the main string 11
The ratio of 3 radius is equal to 0.081 ± 5%, preferably ± 2%；End sections 8 have in second at 2/3rds along its length
Between base portion type face, the second central base portion type face includes main string 11, and main string 11 is formed relative to the plane vertical with rotation axis
Angle, φ, the angle, φ are equal to 3.80 ° ± 5%, and preferably ± 2%, and ratio of radius of the length of the main string 11 and rotor 3 etc.
In 0.062 ± 5%, preferably ± 2%.
Table 2 provides the dimensional parameters scope of the blade 5 according to embodiment specifically preferred according to the invention.Fig. 7 to Fig. 9 is illustrated
The example of the blade 5 manufactured according to the parameter shown in table 2 and the cross section identified in table 2 correspond in Fig. 9 a into 9u
Shown cross section.It should be noted that the tolerance+5% provided in table 2 corresponds to larger preferred scope, and ± 2% tolerance
Corresponding to even more preferably and more limited scope.
In table 2, cross section, A-A, D-D, F-F and U-U correspond respectively to inner base type face, outer base portion type face, interior
End type face and outer end type face 5.
Model measurement
In order to verify the performance of wind turbine 1 made according to the present invention, model is built, the model has rotor 3, this turn
Son 3 has the blade 5 that five radiuses are 1m, and model has 1000W generator, is connected with 2kW inverters.
The type face of blade 5 used corresponds to the type face shown in table 2, wherein, the length of main string 11 and the tolerance of angle, φ
It is reduced to ± 1%.
Then, the model is tested in wind-tunnel.
The result of four experiments carried out under different wind speed is illustrated in table 3, wherein：V ∞ are free stream wind speed, λ
For head velocity ratio (being equal to (ω R)/V ∞), R is the radius of rotor 3, and ω is the rotating speed (rev/min) of rotor 3.
Tests of the table 3- to model
In table 4, the similarly sized wind turbine of test data and other manufacturers claim performance (shown information from
Internet obtains) it is compared.
It should be noted that in table 4, V ∞ are free stream wind speeds, and D is the diameter of rotor 3,
N is the quantity of blade 5, Cp be rotor 3 power coefficient (as, it is known that the power coefficient and rotor 3 efficiency into than
Example, and it is theoretical according to Bates, it is impossible to higher than about 0.593).Particularly, power coefficient Cp is equal to ratio (2P)/(ρ AV ∞3),
Wherein, P is the power extracted by rotor 3, and ρ is the density of air, and A is by swept area that rotor 3 is inswept in rotary course.
It can see that, wind turbine 1 made according to the present invention is in all wind speed (very different each other) tested
In can obtain very high Cp values, can with the wind turbine of prior art under respective design speed it is obtainable most
Good value is suitable).
Therefore, the present invention has important advantage.
In fact, due to the present invention, horizontal axis wind turbine is provided with radius and turned between 0.6 meter and 1.5 meters
Son, compared with the wind turbine of prior art, it ensure that higher under wind speed situation of change and efficiency evenly.
Finally, it is to be noted that the present invention is relatively easily produced, or even the cost related to implementing the present invention is nor very
It is high.
Foregoing invention can be changed and improve in many ways, without departing from the scope of present inventive concept.
All details can be replaced with other technical equivalences elements, and the material and the shape of all parts used and
Size can be varied as desired.
Claims (10)
1. a kind of horizontal axis wind turbine, there is rotor of the radius between 0.6m and 1.5m, wherein：
- wind turbine (1) includes：Supporting structure (2), rotor (3) in the case where there is horizontal axis of rotation with the supporting knot
Structure is rotatably attached；And TRT, the TRT is by rotor (3) Mechanical Driven；
- rotor (3) includes center hub (4), and the blade (5) between two and six is in the case where there is constant tilt angle
It is connected with the peripheral rigid of the center hub；
- each blade (5) has the principal spread direction relative to rotation axis radial directed, and leaves rotary shaft along principal spread direction
Line includes one by one：
Coupling part (13), the coupling part are located at first end (6) place of blade (5), and are fixed in center hub (4)；
Base segments (7), the base segments extend since coupling part (13)；
Center section (16), the center section extend since base segments (7)；And
End sections (8), the end sections extend to the second end (9) of blade (5) since center section (16)；
- be can recognize that for each blade (5), the length of blade (5) as equal to base segments (7), center section (16) and end portion
The total length for dividing (8) to be measured along principal spread direction, the length of the blade (5) is between 450mm and 1400mm；
Wherein：
Base segments (7) along the length that principal spread direction extends between the 10% and 20% of blade (5) length, and according to type face
SG6040 is formed；
End sections (8) along the length that principal spread direction extends between the 70% and 80% of blade (5) length, and according to type face
SG6043 is formed；And
Center section (16) between the 5% and 15% of blade (5) length, and is formed as having along the length that principal spread direction extends
There is the changeable type face along principal spread direction, the center section causes the type face SG6040 and end sections (8) of base segments (7)
The SG6043 connections of type face.
2. horizontal axis wind turbine according to claim 1, it is characterised in that：The base segments (7) of each blade (5)
Have：The inner base type face being connected with coupling part, the inner base type face include main string (11), the main string relative to rotation
The vertical planar shaped of shaft axis is at an angle of Φ, and the angle, φ is equal to 32 ° ± 5%, and the length of the main string and the rotor (3) half
The ratio in footpath is equal to 0.149 ± 5%；And the outer base portion part being connected with center section (16), the outer base portion part include
Main string (11), the main string (11) relative to the planar shaped vertical with rotation axis be at an angle of Φ, the angle, φ be equal to 19.5 ° ±
5%, and the length of the main string and the ratio of the rotor (3) radius are equal to 142 ± 5%.
3. horizontal axis wind turbine according to claim 2, it is characterised in that：Base segments (7) are at it from inside
Base portion type face starts have the first central base portion type face, first central base portion along 1/3rd of the length of principal spread direction
Type face includes main string (11), and the main string is at an angle of Φ relative to the planar shaped vertical with rotation axis, the angle, φ be equal to 27 ° ±
5%, and the length of the main string and the ratio of the radius of rotor (3) are equal to 0.148 ± 5%；Base segments in the length along it three
There is the second central base portion type face at/bis-, the second central base portion type face includes main string (11), the main string relative to rotation
The vertical planar shaped of shaft axis is at an angle of Φ, and the angle, φ is equal to 23 ° ± 5%, and the length of the main string and the rotor (3) half
The ratio in footpath is equal to 0.147 ± 5%.
4. horizontal axis wind turbine according to claim 1, it is characterised in that：The base segments (7) of each blade (5)
Have：The inner base type face being connected with coupling part, the inner base type face include main string (11), the main string relative to rotation
The vertical planar shaped of shaft axis is at an angle of Φ, and the angle, φ is equal to 32 ° ± 2%, and the length of the main string and the rotor (3) half
The ratio in footpath is equal to 0.149 ± 2%；And the outer base portion part being connected with center section (16), the outer base portion part include
Main string (11), the main string relative to the planar shaped vertical with rotation axis be at an angle of Φ, the angle, φ be equal to 19.5 ° ± 2%, and
The length of the main string and the ratio of the rotor (3) radius are equal to 142 ± 2%.
5. horizontal axis wind turbine according to claim 4, it is characterised in that：Base segments (7) are at it from inside
Base portion type face starts have the first central base portion type face, first central base portion along 1/3rd of the length of principal spread direction
Type face includes main string (11), and the main string is at an angle of Φ relative to the planar shaped vertical with rotation axis, the angle, φ be equal to 27 ° ±
2%, and the ratio of the radius of the length of the main string and rotor (3) is equal to 0.148 ± 2%；Base segments are in the length along it
There is the second central base portion type face at 2/3rds, the second central base portion type face includes main string (11), the main string relative to
The vertical planar shaped of rotation axis is at an angle of Φ, and the angle, φ is equal to 23 ° ± 2%, and the length of the main string and the rotor (3)
The ratio of radius is equal to 0.147 ± 2%.
6. according to the horizontal axis wind turbine described in foregoing any one claim, it is characterised in that：Each blade (5)
End sections (8) have：The inner type face being connected with center section (16), the inner type face include main string (11), the main string phase
Φ is at an angle of for the planar shaped vertical with rotation axis, the angle, φ is equal to 15.5 ° ± 5%, and the length of the main string is with turning
The ratio of the radius of sub (3) is equal to 0.111 ± 5%；And form the outer end type face at the second end (9) of blade (5), the outer end type
Face includes main string (11), and the main string is at an angle of Φ relative to the planar shaped vertical with rotation axis, the angle, φ be equal to 1.75 ° ±
5%, and the length of the main string and the ratio of the radius of rotor (3) are equal to 0.050 ± 5%.
7. horizontal axis wind turbine according to claim 6, it is characterised in that：End sections (8) are at it from the inner
Type face starts have the first medial ends type face, the first medial ends type face along 1/3rd of the length of principal spread direction
Including main string (11), the main string (11) is at an angle of Φ relative to the planar shaped vertical with rotation axis, and the angle, φ is equal to 7.9 °
± 5%, and the length of the main string and the ratio of the radius of rotor (3) are equal to 0.081 ± 5%, end sections are in the length along it
There is the second medial ends type face at 2/3rds, the second medial ends type face includes main string (11), the main string relative to
The vertical planar shaped of rotation axis is at an angle of Φ, and the angle, φ is equal to 3.80 ° ± 5%, and the length of the main string and rotor (3)
The ratio of radius is equal to 0.062 ± 5%.
8. horizontal axis wind turbine as claimed in any of claims 1 to 5, it is characterised in that：Each blade (5)
End sections (8) have：The inner type face being connected with center section (16), the inner type face include main string (11), the main string
Relative to the planar shaped vertical with rotation axis be at an angle of Φ, the angle, φ be equal to 15.5 ° ± 2%, and the length of the main string with
The ratio of the radius of rotor (3) is equal to 0.111 ± 2%；And form the outer end type face at the second end (9) of blade (5), the outer end type
Face includes main string (11), and the main string is at an angle of Φ relative to the planar shaped vertical with rotation axis, the angle, φ be equal to 1.75 ° ±
2%, and the length of the main string and the ratio of the radius of rotor (3) are equal to 0.050 ± 2%.
9. horizontal axis wind turbine according to claim 8, it is characterised in that：End sections (8) are at it from the inner
Type face starts have the first medial ends type face, the first medial ends type face along 1/3rd of the length of principal spread direction
Including main string (11), the main string (11) is at an angle of Φ relative to the planar shaped vertical with rotation axis, and the angle, φ is equal to 7.9 °
± 2%, and the length of the main string and the ratio of the radius of rotor (3) are equal to 0.081 ± 2%, end sections are in the length along it
There is the second medial ends type face at 2/3rds, the second medial ends type face includes main string (11), the main string relative to
The vertical planar shaped of rotation axis is at an angle of Φ, and the angle, φ is equal to 3.80 ° ± 2%, and the length of the main string and rotor (3)
The ratio of radius is equal to 0.062 ± 2%.
10. horizontal axis wind turbine as claimed in any of claims 1 to 5, it is characterised in that：Center section
(16) the inner type face of end sections (8) is extended to from the outer base portion type face of base segments (7), and the center section is from base
Portion part (7) starts have center osculant face along the half of the length of principal spread direction, and the center osculant face passes through outer
The interpolation in portion base portion type face and inner type face and obtain.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITUA2016A003340A ITUA20163340A1 (en) | 2016-05-11 | 2016-05-11 | Horizontal axis wind turbine with rotor having a radius between 0.6 m and 1.5 |
| IT102016000048282 | 2016-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107366605A true CN107366605A (en) | 2017-11-21 |
Family
ID=56940141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710331880.4A Pending CN107366605A (en) | 2016-05-11 | 2017-05-11 | A kind of horizontal axis wind turbine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107366605A (en) |
| IT (1) | ITUA20163340A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3763937A1 (en) * | 2019-07-11 | 2021-01-13 | FlowGen Development & Management GmbH | Rotor blade for a wind turbine and wind turbine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3763937A1 (en) * | 2019-07-11 | 2021-01-13 | FlowGen Development & Management GmbH | Rotor blade for a wind turbine and wind turbine |
| WO2021004853A1 (en) * | 2019-07-11 | 2021-01-14 | Flowgen Development & Management Gmbh | Rotor blade for a wind turbine and wind turbine |
| US11913426B2 (en) | 2019-07-11 | 2024-02-27 | FlowGen Development & Management AG | Rotor blade for a wind turbine and wind turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| ITUA20163340A1 (en) | 2017-11-11 |
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