CN209115252U - A kind of new blade, wind wheel and wind-driven generator - Google Patents
A kind of new blade, wind wheel and wind-driven generator Download PDFInfo
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- CN209115252U CN209115252U CN201821677722.0U CN201821677722U CN209115252U CN 209115252 U CN209115252 U CN 209115252U CN 201821677722 U CN201821677722 U CN 201821677722U CN 209115252 U CN209115252 U CN 209115252U
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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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Abstract
The utility model provides a kind of new blade, wind wheel and wind-driven generator, it is related to technical field of wind power generation, the new blade includes: blade body, empennage and trouble flow strip, the blade body includes tip and root, the trouble flow strip is arranged on the root, and one end of the empennage is connect with the tip；The empennage is bent empennage, and the empennage includes: interconnecting piece and bending part, and the interconnecting piece is connect with the tip, and the bending part is folded to the interconnecting piece.The new blade is arranged the trouble flow strip and effectively reduces the vortex of root of blade formation, improve absorption of the blade to wind energy, simultaneously, the trouble flow strip alleviates boundary-layer segregation phenomenon, so that wind is attached to blade surface, improve the utilization efficiency of wind energy, the empennage effectively reduces the vortex of blade tip formation, absorption of the blade to wind energy is improved, the lift of blade is increased.
Description
Technical field
The utility model relates to technical field of wind power generation, send out in particular to a kind of new blade, wind wheel and wind-force
Motor.
Background technique
Currently, wind power industry has had begun large-scale expansion in China.The raising of the utilization efficiency of wind energy is still
It is so a problem.
Blade of wind-driven generator is in normal operation, since blade rotates, will lead to root of blade and forms vortex, leaf
Piece tip goes out to form flow-disturbing, and largely absorption of the interference blade to wind energy reduces the lift of blade, reduce wind energy
Utilization efficiency.
Blade during operation, in the segment length that root of blade extends to blade tip direction, can generate boundary-layer
Segregation phenomenon when wind blows over next from leading edge, since the leading edge of root is wider and the radian of circular arc influences, prevents wind from fine
Be attached to blade surface, largely absorption of the interference blade to wind energy.
Utility model content
The purpose of this utility model is to provide a kind of new blades, to improve the above problem.
The utility model is realized in this way:
The utility model provides a kind of new blade, including blade body, empennage and trouble flow strip, and the blade body includes
Tip and root, the trouble flow strip are arranged on the root, and one end of the empennage is connect with the tip；The empennage is
Bent empennage, the empennage include: interconnecting piece and bending part, and the interconnecting piece is connect with the tip, the bending part folding
To the interconnecting piece.
Optionally, when the empennage is bent, the bending part is folded to the interconnecting piece along the blade body front.
Optionally, the trouble flow strip extends along the direction far from root, and cross-sectional area is gradually reduced.
Optionally, the trouble flow strip is in triangular pyramid, and the seamed edge of the triangular pyramid is arc-shaped.
Optionally, the blade body is in hollow form.
Optionally, the root is equipped with opening.
Optionally, the shape of the new blade is in aerofoil profile shape.
The utility model provides a kind of wind wheel, and including wheel hub and above-mentioned new blade, the new blade is installed on institute
State wheel hub.
Optionally, the quantity of the new blade is 3.
The utility model provides a kind of wind-driven generator, and including pylon, cabin and above-mentioned wind wheel, the wind wheel is installed on
The cabin, the cabin are installed on the pylon.
The beneficial effects of the utility model are:
The tip of the new blade be equipped with empennage, the empennage bend when, the bending part along the blade body just
Face is folded to the interconnecting piece, can weaken the generation and development of blade flow-disturbing at blade tip, improve the aeroperformance of blade,
The root of the new blade is equipped with trouble flow strip, and the trouble flow strip can reduce the maelstrom of root of blade formation, improve blade
Absorption to wind energy increases the lift of blade, improve the utilization efficiency of wind energy, since root leading edge is wider and circularity
Radian influences, and when making wind from leading edge by blade pressure surface, cannot be attached to blade surface well, the trouble flow strip can drop
Rate when low-flow passes through blade pressure surface from leading edge, can make wind more effectively be attached to blade surface, improve blade pair
The absorption of wind energy improves the utilization efficiency of wind energy.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram at the first visual angle of new blade provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of the trouble flow strip of new blade provided by the embodiment of the utility model；
Fig. 3 is the structural schematic diagram of the empennage of new blade provided by the embodiment of the utility model；
Fig. 4 is the structural schematic diagram at the second visual angle of new blade provided by the embodiment of the utility model.
Icon: 100- new blade；1- blade body；The root 11-；The tip 12-；2- trouble flow strip；3- empennage；
31- interconnecting piece；311- connection web；32- bending part.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the utility model embodiment, it should be noted that indicating position or positional relationship is based on attached drawings
Shown in orientation or positional relationship or the utility model product using when the orientation or positional relationship usually put, or
Orientation or positional relationship that those skilled in the art usually understand or the utility model product using when usually put
Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model
Limitation.In addition, term " first ", " second ", " third " etc. are only used for distinguishing description, it is not understood to indicate or imply phase
To importance.
In the description of the utility model embodiment, it is also necessary to which explanation is unless specifically defined or limited otherwise, art
Language " setting ", " installation ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or
It is integrally connected；It can be and be directly connected to, can also be indirectly connected with by intermediary.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
First embodiment
Referring to Fig. 1, Fig. 1 is the structural schematic diagram at 100 first visual angle of new blade provided in this embodiment.
It include blade body 1, trouble flow strip 2 and empennage 3 the present embodiment provides a kind of new blade 100.Wherein, blade body
1 includes root 11 and tip 12, and trouble flow strip 2 is arranged on root 11, and one end of empennage 3 is connect with tip 12.
Optionally, the blade body 1 is in hollow form, so that entire blade body 1 is more slim and graceful and and can save material.
Wherein, blade body 1 is internally provided with support crossbeam, and support crossbeam is arranged along 1 direction of blade body, and one end is arranged in blade sheet
The maximum position of 1 profile of body, the other end are arranged in tip 12.
Optionally, one end of the root 11 far from tip 12 is cylindrical, and the end is equipped with opening, and the shape of opening is circle
Shape.The cylindrical one end in the root 11 gradually becomes linear from arc to 11 other end of root.
Optionally, the other end of blade body 1 is arranged in tip 12, and opposite with root 11, and tip 12 is in flat.
Optionally, the shape of blade body 1 is in aerofoil profile shape, and NACA (National Advisory Committee for Aeronautics) series can be used
Aerofoil profile or customized series aerofoil sections, the length of blade body 1 are preferably designed for 37 meters to 80 meters.Optionally, the blade sheet
Profile of the body 1 from root 11 to tip 12 first increases to be gradually reduced again.
It should be noted that blade body 1 has first surface and second surface, blade body 1 is arranged in trouble flow strip 2
First surface and be located at root 11 at, be provided with the blade body 1 of trouble flow strip 2 first surface be windward side, corresponding second
Surface is leeward.The trouble flow strip 2 can reduce and destroy the maelstrom of the formation of root of blade 11, improve suction of the blade to wind energy
It receives, increases the lift of blade, improve the utilization efficiency of wind energy, since 11 leading edge of root is wider and the radian of circularity influences,
When making wind from leading edge by blade pressure surface, blade surface cannot be attached to well, the trouble flow strip 2 can reduce air-flow from
Leading edge passes through rate when blade pressure surface, wind can be made more effectively to be attached to blade surface, improve suction of the blade to wind energy
It receives, improves the utilization efficiency of wind energy.
Referring to Fig. 2, wherein, trouble flow strip 2 is arranged on root 11, by 11 surface segmentation of root at the left and right area Liang Ge
Domain, trouble flow strip 2 extend along the direction far from root 11, and cross-sectional area is gradually reduced.Trouble flow strip 2 is produced by mold, logical
It crosses bonding to be arranged on root 11, optionally, trouble flow strip 2 is in triangular pyramid, and the seamed edge of triangular pyramid is arc-shaped.As a kind of optional
Embodiment, the tip 12 of trouble flow strip 2 is located at the maximum position of 1 profile of blade body.It is understood that trouble flow strip 2
Length and position can be according to the wind-resources situation custom designs of different wind fields, in this regard, the application is without limitation.
Blade of wind-driven generator is during normal operation, since to cause root of blade 11 to be formed bigger for blade rotation
Vortex, the rotation of vortex, largely can absorption of the interference blade to wind energy, and reduce the lift of blade, root
11 are provided with trouble flow strip 2 for the surface segmentation of root 11 into two regions in left and right, hinder the formation of 11 maelstrom of root, will
Vortex has resolved into lesser vortex, reduces the negative effect of absorption of the vortex to blade surface wind energy.
In the operation process of blade, start in root of blade 11 into the segment length that 12 direction of blade tip is extended,
Boundary-layer segregation phenomenon can be generated, i.e. wind blows over to come from blade inlet edge direction, since 11 leading edge of root is wider and the arc of circularity
Degree influences, and when making wind from leading edge by blade surface, cannot be attached to blade surface well, can leading edge to rear direction by
It is gradually separated with blade surface, to be detached from blade surface, the seamed edge of trouble flow strip 2 is arc-shaped, can alleviate wind from leading edge edge backward
The rate that direction is gradually separated with blade surface can make wind more effectively be attached to blade surface, and the trouble flow strip 2 increases
The area that blade is contacted with wind, improves absorption of the blade to wind energy.
Referring to Fig. 3, Fig. 3 is the structural schematic diagram of the empennage 3 of new blade 100 provided in this embodiment, wherein empennage
3 be bent empennage 3, and empennage 3 includes: interconnecting piece 31 and bending part 32, and interconnecting piece 31 is connect with tip 12, and bending part 32 is folded to
Interconnecting piece 31.
When empennage 3 is bent, the bending part 32 of empennage 3 can be folded to the interconnecting piece 31 along 1 front of blade body,
That is the windward side (as shown in Figure 1) that is folded to blade body 1 of empennage 3, the bending part 32 of corresponding empennage 3 can also be along blade body
1 reverse side is folded to the interconnecting piece 31, i.e. the leeward (as shown in Figure 4) that is folded to blade body 1 of empennage 3.Wherein, Fig. 4 is
The structural schematic diagram of the new blade 100 of the leeward of blade body 1 is folded to for empennage 3, it should be noted that the folding of empennage 3
The distance between tip 12 and the pylon that blade is depended on to direction, if the distance between tip 12 and pylon are unsatisfactory for safety
Property require, then the bending part 32 of empennage 3 need to be folded to the interconnecting piece 31 along the front of blade body 1, i.e. empennage 3 is folded to blade
The windward side of ontology 1, empennage 3 is backwards to pylon, if the distance between tip 12 and pylon meet security requirement, empennage 3
Bending part 32 need to be folded to the interconnecting piece 31 along 1 reverse side of blade body, i.e. the leeward that is folded to blade body 1 of empennage 3,
Empennage 3 is towards pylon.
Optionally, the length of empennage 3 is 0.7 meter to 2 meters, and the width of empennage 3 is 0.6 meter to 1 meter, the bending angle of empennage 3
Spending magnitude range is 90 ° to 135 °.The length of empennage 3 can be set according to the wind-resources situation of different wind fields, then this, the application is not
It limits.
Optionally, connection web 311 is provided on the inside of the interconnecting piece 31 of empennage 3, the connection web 311 is for connecting empennage
3 interconnecting piece 311 and the tip 12 of blade body 1, play the role of support and bonding, and 311 inside of interconnecting piece also can be set
Other structures, for example, being provided with protrusion on the inside of interconnecting piece 311, it is to be understood that as long as support and bonding work can be played
Structure.It therefore cannot be by Structure Understanding shown in the present embodiment at being limitation to the application.
When blade of wind-driven generator is in normal operation, due to blade rotate too fast, in the meeting of the tip of blade 12 shape
At flow-disturbing, absorption of the blade to wind energy is largely disturbed.Empennage 3 is bent empennage 3, is conducive to inhibit blade point
The generation and development of 12 flow-disturbing of portion, improve the aeroperformance of blade, improve the utilization efficiency of wind energy.
In addition, new blade 100 provided in this embodiment can pass through priming by vacuum, laminating method, structure gluing knot, putty
The production technologies preparation such as filling, polishing.
The trouble flow strip 2 of new blade 100 provided in this embodiment effectively reduces the vortex of the formation of root of blade 11, mentions
High absorption of the blade to wind energy, increases the lift of blade, meanwhile, the trouble flow strip 2 alleviates boundary-layer segregation phenomenon, makes
Wind is attached to blade surface, improves absorption of the blade to wind energy, improves the utilization efficiency of wind energy, and empennage 3 effectively reduces
The vortex that blade tip 12 is formed, improves absorption of the blade to wind energy, increases the lift of blade.
Second embodiment
The present embodiment provides a kind of wind wheel, which includes the new blade 100 provided in wheel hub and first embodiment.Institute
New blade 100 is stated to connect by the opening of 11 one end of root of blade body 1 with wheel hub.New blade 100 includes blade sheet
Body 1, trouble flow strip 2 and empennage 3.
Optionally, the number of the new blade 100 is three.Wherein, it should be noted that the new blade 100
Number can accordingly increase (such as 4) according to actual use situation or reduce (such as 2), cannot be understood as being to this
The limitation of application.
The speed of wind speed round compares, and first has to determine a premise, i.e. the self weight problem of wind wheel, in same wind condition
Under, relatively light wind wheel necessarily turns fastly, and heavier wind wheel is inevitable with regard to turning slowly.So if wind wheel from heavy phase
Together, ineffective several blades, the gross area of blade are identical.Therefore, for identical wind wheel of being self-possessed, blade is less,
Blade can be made longer, the area of a circle that blade marks when rotation is with regard to larger, so revolving speed is fast, generating efficiency is also higher；
On the contrary, if under the premise of the blade gross area is constant, blade can only be made shorter with more blade, when blade rotates by
The gross area of wind is just smaller, and revolving speed is relatively slow instead, and generating efficiency is also just lower.
Compared with two blade wind-wheels, balance when three blade wind-wheels operate is more preferable；Compared with multiple-blade wind wheel, three blade wind-wheels are often
There is self weight compared with light, the longer advantage of length of blade again.
In the selection of wind wheel blade, three blade wind-wheels have preferable comprehensive performance, and wind energy utilization is higher.
Wind wheel provided in this embodiment includes three new blades 100, and the trouble flow strip 2 of new blade 100 effectively reduces
The vortex that root of blade 11 is formed, improves absorption of the blade to wind energy, increases the lift of blade, meanwhile, the flow-disturbing
Item 2 alleviates boundary-layer segregation phenomenon, and wind is made to be attached to blade surface, improves absorption of the blade to wind energy, improves wind energy
Utilization efficiency, empennage 3 effectively reduce blade tip 12 formation flow-disturbing, improve absorption of the blade to wind energy, increase
The lift of blade.And then absorption of the wind wheel to wind energy is improved, improve the utilization efficiency of wind energy.Meanwhile three blade wind-wheel tool
There is preferable comprehensive performance, wind energy utilization is higher.
Remaining structure of the wind wheel provided in the present embodiment is identical with the first embodiment, same section cross-reference,
Details are not described herein.
3rd embodiment
The present embodiment provides a kind of wind-driven generator, which includes mentioning in pylon, cabin and second embodiment
The wind wheel of confession.The wind wheel includes the new blade 100 provided in first embodiment.Wind wheel is installed on cabin, and cabin is installed on tower
Frame.
For the safety and validity for ensuring wind-driven generator, calculating check is carried out to wind turbine complete machine and blade.School
Core content includes: blade loading and intensity, each coupling structure intensity (containing bolt), blade frequencies, the major structural member load of complete machine
And intensity, blade pitch device torque and intensity, bearing load and intensity, gear-box torque and intensity, generator torque and intensity, tower
Cylinder load and intensity, given tensile load and bearing capacity, overall frequency, power curve and generated energy.It, can by calculating and checking above
To ensure the safety and validity of the wind power generating set.
Wind-driven generator provided in this embodiment can be used as low wind speed region, MW class, big blade wind turbine, especially
Power is in 1.5MW or more, while impeller diameter can effectively improve the generating capacity of unit in 77 meters or more of unit.
Remaining structure of the wind-driven generator provided in the present embodiment is identical as second embodiment, same section cross-reference
, details are not described herein.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of new blade, which is characterized in that including blade body, trouble flow strip and empennage, the blade body includes tip
And root, the trouble flow strip are arranged on the root, one end of the empennage is connect with the tip；
The empennage is bent empennage, and the empennage includes: interconnecting piece and bending part, and the interconnecting piece and the tip connect
It connects, the bending part is folded to the interconnecting piece.
2. new blade according to claim 1, which is characterized in that when the empennage is bent, the bending part is described in
Blade body front is folded to the interconnecting piece.
3. new blade according to claim 1 or 2, which is characterized in that the trouble flow strip is prolonged along the direction far from root
It stretches, cross-sectional area is gradually reduced.
4. new blade according to claim 3, which is characterized in that the trouble flow strip is in triangular pyramid, the triangular pyramid
Seamed edge it is arc-shaped.
5. new blade according to claim 4, which is characterized in that the blade body is in hollow form.
6. new blade according to claim 5, which is characterized in that the root is equipped with opening.
7. new blade according to claim 6, which is characterized in that the shape of the blade body is in aerofoil profile shape.
8. a kind of wind wheel, which is characterized in that including wheel hub and the described in any item new blades of claim 1-7, the blade
It is installed on the wheel hub.
9. wind wheel according to claim 8, which is characterized in that the quantity of the new blade is 3.
10. a kind of wind-driven generator, which is characterized in that including pylon, cabin and wind wheel as claimed in claim 9, the wind wheel
It is installed on the cabin, the cabin is installed on the pylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821677722.0U CN209115252U (en) | 2018-10-16 | 2018-10-16 | A kind of new blade, wind wheel and wind-driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821677722.0U CN209115252U (en) | 2018-10-16 | 2018-10-16 | A kind of new blade, wind wheel and wind-driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209115252U true CN209115252U (en) | 2019-07-16 |
Family
ID=67201187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821677722.0U Active CN209115252U (en) | 2018-10-16 | 2018-10-16 | A kind of new blade, wind wheel and wind-driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209115252U (en) |
-
2018
- 2018-10-16 CN CN201821677722.0U patent/CN209115252U/en active Active
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