CN209129793U - Blade and wind power generating set including the blade - Google Patents
Blade and wind power generating set including the blade Download PDFInfo
- Publication number
- CN209129793U CN209129793U CN201822102319.1U CN201822102319U CN209129793U CN 209129793 U CN209129793 U CN 209129793U CN 201822102319 U CN201822102319 U CN 201822102319U CN 209129793 U CN209129793 U CN 209129793U
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- Prior art keywords
- blade
- leading edge
- edge guard
- guard
- chord length
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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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- Wind Motors (AREA)
Abstract
The utility model relates to a kind of blade and including the wind power generating set of the blade.Leading edge guard is provided on the up-front outer surface of the blade, on the cross section of the blade, the thickness of the leading edge guard is maximum at the position of leading edge stagnation point for corresponding to the blade, and successively decreases along the both ends of the chordwise direction of the blade towards the leading edge guard.By the shape of optimization leading edge guard the protective capacities of leading edge guard can be enhanced, while reducing influence of the leading edge guard to blade aerodynamic performance in the utility model.
Description
Technical field
The utility model relates to a kind of blade and including the wind power generating set of the blade, more particularly, to it is a kind of its
The blade of leading edge guard and the wind power generating set including the blade are provided on up-front outer surface.
Background technique
Wind power generating set captures wind energy by blade, and converts wind energy into electric energy by generator.Blade is exposed to
In air, it is subjected to the erosion and abrasion of wind and frost sleet dust gravel, aerodynamic configuration is easy to cause to change.Therefore, existing skill
Anti-corrosion treatment usually is carried out in blade surface in art.
Blade inlet edge is main wind cutting position, and as blade develops to enlargement, tip speed can be more than 90m/s.
Under such high speed, raindrop, dust storm and dust etc. all can cause blade inlet edge seriously to be damaged, and this damage not only causes pneumatic
Efficiency reduces and loses generated energy, and can jeopardize the service life of blade.It is existing in order to enhance the protective capacities of blade inlet edge
Usually edge pastes protecting film in front of the blade in technology, as shown in Figure 1, the front edge bonding in blade 1 has leading edge protecting film 2.
However, this blade inlet edge safeguard structure in the prior art still has the performance that cannot effectively play protecting film
The problem of.
Utility model content
For the above-mentioned problems in the prior art, the utility model is directed to a kind of blade, up-front appearance
The leading edge guard of non-uniform thickness is provided on face.
According to the utility model, a kind of blade is provided, leading edge protection dress is provided on the up-front outer surface of the blade
It sets, on the cross section of the blade, the thickness of the leading edge guard is corresponding to the leading edge stagnation point of the blade
It is maximum at position, and successively decrease along the both ends of the chordwise direction of the blade towards the leading edge guard.
Optionally, the leading edge guard can have the surface for being configured to be bonded with the leading edge of the blade, described
Surface can have the shape profile-followed with the up-front outer surface, and the both ends of the leading edge guard can be with the blade
Smooth outer surface transition.
Optionally, can have the recessed area for accommodating the leading edge guard in the leading edge of the blade, with
When the leading edge guard attaches in the leading edge of the blade and is arranged in the recessed area, so that the leading edge is anti-
The smooth outer surface transition at the both ends of protection unit and the blade.
Optionally, on the cross section of the blade, the leading edge stagnation point can be away from the up-front leading edge endpoint
In the range of 0% chord length to 3% chord length.
Optionally, on the cross section of the blade, one end of the leading edge guard can be located at the suction of the blade
In the range of being 5% chord length to 20% chord length away from the up-front leading edge endpoint on power face, and the leading edge guard
The other end can be located at the range on the pressure face of the blade away from the up-front leading edge endpoint for 5% chord length to 20% chord length
It is interior.
Optionally, the thickness of the leading edge guard can be in the range of 0.02mm to 10mm.
Optionally, along the spanwise direction of the blade, the leading edge guard may be provided at the leaf away from the blade
Point is in the range of 2%~50% length of blade.
Optionally, along the spanwise direction of the blade, the leading edge guard may include tightly next to each other more
A sub-block.
Optionally, the leading edge guard can be flexible membrane, rigid member or the coating being coated in the leading edge.
According to the utility model, a kind of wind power generating set is provided, the wind power generating set includes leaf as described above
Piece.
Leading edge protection can be enhanced by optimizing the shape of leading edge guard in above-mentioned blade provided by the utility model
The protective capacities of device, while reducing influence of the leading edge guard to blade aerodynamic performance.
Detailed description of the invention
Fig. 1 shows the cross-sectional view of the leading edge protecting film in the prior art for being attached to blade inlet edge；
Fig. 2 shows the signals of the cross section of the blade for being provided with leading edge guard of embodiment according to the present utility model
Figure；
Fig. 3 is the schematic diagram for showing blade inlet edge weathering intensity；
Fig. 4 shows the side view signal of the blade for being provided with leading edge guard of embodiment according to the present utility model
Figure.
Description of symbols:
1- blade；2- leading edge protecting film；10- blade；11- leading edge endpoint；12- leading edge stagnation point；13- suction surface；14- pressure
Power face；15- blade tip；20- leading edge guard；The windward side 21-；22- binding face；23- first end；24- second end；25- sub-block.
Specific embodiment
In order to make the technical concept those skilled in the art can better understand that the utility model, below in conjunction with attached drawing
Specific embodiment of the utility model is described in detail, in the accompanying drawings, identical label always shows identical component.
Referring to Fig. 2, the utility model provides a kind of blade with blade inlet edge protective device.Fig. 2 shows bases
The cross-sectional view of the blade 10 for being provided with leading edge guard 20 of the embodiments of the present invention.As shown in Fig. 2, in leaf
Leading edge guard 20 (for example, leading edge protecting film) is set on the up-front outer surface of piece 10, to protect to blade inlet edge.
Inventors discovered through research that the leading edge damage of blade is more serious closer to blade tip, the linear velocity of this and it has directly
Connect relationship；In addition, blade inlet edge is uneven in the weathering intensity that different chordwise locations is subjected on the cross section of blade
's.Blade surface weathering intensity is schematically shown in Fig. 3, at the leading edge stationary point (leading edge stagnation point) 12 of blade 10, is
The position of blade surface face incoming flow, weathering is the most serious, and the direction that leading edge stagnation point 12 extends to two sides, weathering gradually subtracts
It is small.On the cross section of blade 10, leading edge stagnation point 12 can be 0% chord length to 3% chord length away from up-front leading edge endpoint 11
In the range of.In addition, being attached to the protective capacities of the leading edge guard of blade inlet edge and its thickness is positively correlated.If by leading edge
The thickness of protective device be configured as it is equally distributed, before in the prior art as described in referring to Fig.1 is arranged on blade 1
Edge protecting film 2, then leading edge protecting film in homogeneous thickness cannot give full play to the performance of material, and leading edge is caused to damage serious region
Protect film thickness insufficient, and it is excessive to damage lighter area protection film thickness.Leading edge protects film thickness excessive, will affect blade
Aeroperformance.
In order to give full play to the material protection performance of leading edge guard, the utility model proposes in the leading edge of blade 10
Leading edge guard 20 along tangential non-uniform thickness is set.Specifically, as shown in Fig. 2, on the cross section of blade 10, leading edge
The thickness of protective device 20 is maximum at the position of leading edge stagnation point 12 for corresponding to blade, and along the chordwise direction of blade 10
Successively decrease towards the both ends (first end 23 and second end 24) of leading edge guard 20, and the both ends of leading edge guard 20 (that is,
The edge being bonded with the outer surface of blade) at the smooth outer surface transition of blade 10.
The utility model proposes make the thickness of leading edge guard 20 maximum at the leading edge stagnation point 12 of blade 10, and court
The scheme gradually successively decreased to the two sides of pressure face 14 and suction surface 13 can pointedly cope on blade invading for different chordwise locations
Erosion, to give full play to the protective capacities of leading edge guard 20.
Leading edge guard 20 can have surface (the alternatively referred to as binding face for being configured to be bonded with the leading edge of blade 10
22), and the surface has the shape profile-followed with up-front outer surface.One opposite with binding face 22 of leading edge guard 20
Face is windward side 21.For example, leading edge guard 20 can be flexible membrane or coating, flexible membrane is being pasted or is coating coating
When on to the leading edge of blade 10, binding face 22 will be fitted closely with the outer surface of blade 10.In addition, leading edge guard 20 can also
To be rigid member, in this case, rigid member can be made preshaped so that its binding face 22 is formed to have and blade
The profile-followed shape in 10 outer surface, thus rigid member to be attached to (for example, by bonding, welding, riveting etc.) to blade 10
Outer surface when, fit closely the binding face of rigid member and the outer surface of blade 10.
In the present embodiment, the thickness of leading edge guard 20 can be in the range of 0.02mm to 10mm, for example, in correspondence
At the position of the leading edge stagnation point 12 of blade 10, the thickness of leading edge guard 20 can be 1mm to 5mm, and leading edge protection dress
Very small thickness, such as 0.05mm can be had by setting 20 both ends 23,24, so that leading edge guard 20 is at its both ends 23,24
The smooth outer surface transition at place and blade 10.
In addition, may also be limited due to technique there are step at the both ends (edge) of leading edge guard 20, but step
In the presence of the protective performance for having no effect on protective device, but the aeroperformance of blade can be reduced.Accordingly, it would be desirable to keep leading edge anti-
The edge of protection unit and the surface of blade are realized and smoothly transit, so that the influence to blade aerodynamic performance be made to minimize.
In addition, showing leading edge guard 20 in Fig. 2 directly attaches modes such as (for example, by) pasting, weld in leaf
On the up-front outer surface of piece 10, optionally, smoothly transit to realize the outer surface of leading edge guard 20 and blade 10,
Also (do not show in figure it is contemplated that being reserved in the leading edge of blade 10 with the matched recessed area of the shape of leading edge guard 20
Out), so that the smooth outer surface transition at the both ends of leading edge guard 20 and blade 10.By in leading edge guard 20
Edge and the outer surface of blade 10 are realized and smoothly transit, and the influence to blade aerodynamic performance can be reduced.
On the cross section of blade, one end (initial position) of leading edge guard 20 can be located at the suction surface 13 of blade 10
On away from up-front leading edge endpoint 11 be 5% chord length to 20% chord length in the range of, and leading edge guard 20 the other end (eventually
Stop bit is set) it can be located on the pressure face 14 of blade 10 away from up-front leading edge endpoint 11 in the range of 5% chord length to 20% chord length.
Preferably, one end (second end 24) of leading edge guard 20 can be located on the suction surface 13 of blade 10 is away from leading edge endpoint 11
At the position of 10% chord length, the other end (first end 23) of leading edge guard 20 can be located on the pressure face 14 of blade 10 away from preceding
Acies point 11 is at the position of 10% chord length.
As shown in figure 4, leading edge guard 20 can be located at the blade tip 15 away from blade 10 and be along the spanwise direction of blade 10
In the range of 2%~50% length of blade.
Leading edge guard 20 can be used as an entirety and be attached on the outer surface of blade 10.In addition, for wind-power electricity generation
For the blade of machine, the vane size is usually very big, it is contemplated that the manufacturing process of the vane size and leading edge guard, it is preceding
Edge protective device 20 can be made of the multiple sub-blocks 25 tightly next to each other of the spanwise direction along blade 10, such as leading edge protection dress
Multiple sub-blocks 25 can be divided into and be attached to each sub-block 25 respectively on the outer surface of blade 10 by setting 20, and in the process of attaching
In ensure between each sub-block 25 without step and gap.
The thickness of leading edge guard provided by the utility model be it is non-uniform, it is thick damaging serious stagnation point region
Degree is big, and thickness successively decreases to both ends are progressive, realizes the optimum use of leading edge guard material property, while to blade gas
The influence of dynamic performance is minimum.
In addition, the leading edge guard of the utility model can be flexible membrane with above-mentioned thickness characteristics, rigid member,
The coating or other suitable leading edge protective materials being coated in leading edge, in addition, the leading edge guard of the utility model may be used also
To be combined by a variety of different materials, such as it is combined by coating, flexible membrane layer and rigid material layer.
Specific embodiment of the present utility model is described in detail above, although having show and described some realities
Example is applied, it will be understood by those skilled in the art that not departing from the principles of the present invention for being defined by the claims its range
In the case where spirit, these embodiments can be combined, be modified and perfect (for example, can be to the utility model not
It is combined with technical characteristic to obtain new technical solution).These combine, modify and improve also should be in the guarantor of the utility model
It protects in range.
Claims (10)
1. a kind of blade, leading edge guard (20) are provided on the up-front outer surface of the blade, which is characterized in that in institute
It states on the cross section of blade, the thickness of the leading edge guard (20) is corresponding to the leading edge stagnation point (12) of the blade
It is maximum at position, and successively decrease along the both ends (23,24) of the chordwise direction of the blade towards the leading edge guard (20).
2. blade as described in claim 1, which is characterized in that the leading edge guard (20) have be configured to it is described
The surface of the leading edge fitting of blade, the surface has the shape profile-followed with the up-front outer surface, and the leading edge is anti-
The smooth outer surface transition of both ends (23,24) and the blade of protection unit (20).
3. blade as claimed in claim 1 or 2, which is characterized in that in the leading edge of the blade have for accommodate it is described before
The recessed area of edge protective device (20), in the leading edge that the leading edge guard (20) attaches to the blade and to be arranged
When in the recessed area, so that the smooth outer surface transition at the both ends of the leading edge guard (20) and the blade.
4. blade as described in claim 1, which is characterized in that on the cross section of the blade, the leading edge stagnation point
(12) in the range of being 0% chord length to 3% chord length away from the up-front leading edge endpoint (11).
5. blade as described in claim 1, which is characterized in that on the cross section of the blade, the leading edge guard
(20) it is 5% chord length to 20% chord length that one end, which is located on the suction surface of the blade away from the up-front leading edge endpoint (11),
In range, and the other end of the leading edge guard (20) is located on the pressure face of the blade away from the up-front leading edge
Endpoint (11) is in the range of 5% chord length to 20% chord length.
6. blade as described in claim 1, which is characterized in that the thickness of the leading edge guard (20) 0.02mm extremely
In the range of 10mm.
7. blade as described in claim 1, which is characterized in that along the spanwise direction of the blade, the leading edge protection dress
It sets (20) and the blade tip away from the blade (15) is set in the range of 2%~50% length of blade.
8. blade as described in claim 1, which is characterized in that along the spanwise direction of the blade, the leading edge protection dress
Setting (20) includes multiple sub-blocks (25) tightly next to each other.
9. blade as described in claim 1, which is characterized in that the leading edge guard (20) is flexible membrane, rigid member
Or it is coated to the coating in the leading edge.
10. a kind of wind power generating set, which is characterized in that the wind power generating set includes such as any one of claims 1 to 9
The blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822102319.1U CN209129793U (en) | 2018-12-14 | 2018-12-14 | Blade and wind power generating set including the blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822102319.1U CN209129793U (en) | 2018-12-14 | 2018-12-14 | Blade and wind power generating set including the blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209129793U true CN209129793U (en) | 2019-07-19 |
Family
ID=67248777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822102319.1U Active CN209129793U (en) | 2018-12-14 | 2018-12-14 | Blade and wind power generating set including the blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209129793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237124A (en) * | 2020-02-19 | 2020-06-05 | 上海电气风电集团股份有限公司 | System integrating wind power blade leading edge protection and lightning stroke protection |
-
2018
- 2018-12-14 CN CN201822102319.1U patent/CN209129793U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237124A (en) * | 2020-02-19 | 2020-06-05 | 上海电气风电集团股份有限公司 | System integrating wind power blade leading edge protection and lightning stroke protection |
| CN111237124B (en) * | 2020-02-19 | 2021-11-05 | 上海电气风电集团股份有限公司 | System integrating wind power blade leading edge protection and lightning stroke protection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 830026 No. 107, Shanghai Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region Patentee after: Jinfeng Technology Co.,Ltd. Address before: 830026 No. 107, Shanghai Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region Patentee before: XINJIANG GOLDWIND SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |