CN209687653U - A kind of wind generator set blade - Google Patents
A kind of wind generator set blade Download PDFInfo
- Publication number
- CN209687653U CN209687653U CN201920196438.XU CN201920196438U CN209687653U CN 209687653 U CN209687653 U CN 209687653U CN 201920196438 U CN201920196438 U CN 201920196438U CN 209687653 U CN209687653 U CN 209687653U
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- CN
- China
- Prior art keywords
- blade
- tip
- blade body
- wing
- generator set
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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
Links
- 208000032765 Device extrusion Diseases 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Wind Motors (AREA)
Abstract
The utility model relates to a kind of wind generator set blades, it includes blade body, the extension wing being arranged at blade body blade root and the tip vane being arranged at blade body blade tip, the extension wing is fixed at the side of blade body, to blade tip direction, the thickness for extending the wing is gradually reduced blade root along blade body.The utility model is mounted with the extension wing in the blade root of original blade body, while extending the thickness of the wing from blade root to being gradually reduced at blade tip, on the one hand compensates for the theoretical chord length at blade root, can utilize wind energy to greatest extent；On the other hand, the advantages of extending the wing by installing additional, aerofoil profile is made to be transformed into blunt trailing edge aerofoil profile, possessing maximum lift coefficient and slope of lift curve increase, stall zone delay, will also bring the promotion of vane efficiency, to substantially increase wind energy utilization.
Description
Technical field
The utility model relates to a kind of wind generator set blades.
Background technique
It is increasing for the demand of electric energy with the development of human society, and traditional coal fired power generation form is also slowly
Replaced generation of electricity by new energy, wind-power electricity generation is important one of power generation means.Wind-driven generator mainly by blade, generator,
Mechanical part and electric component composition.
Using common standard aviation aerofoil profile, which is using the blade of current existing part wind power generating set
When wind energy utilization it is lower, cost of electricity-generating is higher, and a large amount of human and material resources and financial resources will be expended by replacing blade, therefore
It is improved in existing standard aviation aerofoil profile, is urgent problem to improve its wind energy utilization.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of wind generator set blades that wind energy utilization is high.
The technical scheme adopted by the utility model is a kind of wind generator set blade comprising blade body, setting
The extension wing at blade body blade root and the tip vane being arranged at blade body blade tip.
The extension wing is fixed at the side of blade body, and the blade root along blade body extends the wing to blade tip direction
Thickness be gradually reduced.
The pressure face ecto-entad of the extension wing is recessed gradually downward.
It is provided with suction hole on the suction surface of the extension wing, gas vent is provided at the blade tip of blade body, it is described
Suction hole is connected to by the inner space of blade body with gas vent formation.
The rear of the tip vane is serrated.
Denoising device is provided at the rear of the tip vane.
The denoising device protrusion is on the pressure face of tip vane comprising preceding facade and trailing flank, the rear side
Face is inclined on tip vane and its outer rim is arc-shaped, and the preceding facade is inclined-plane.
The good effect of the utility model are as follows: the utility model is mounted with to extend in the blade root of original blade body
The wing, while extending the thickness of the wing from blade root to being gradually reduced at blade tip, on the one hand compensates for the theoretical chord length at blade root, can be with
Wind energy is utilized to greatest extent；On the other hand, the wing is extended by installing additional, so that aerofoil profile has been transformed into blunt trailing edge aerofoil profile, possesses most
Rise higher force coefficient and slope of lift curve increase, stall zone delay the advantages of, will also the promotion of vane efficiency be brought, to mention significantly
High wind energy utilization.And be located at the tip vane at blade tip and blade tip air-flow is prevented to flow into suction surface from pressure face, reduce
The efficiency as caused by blade tip vortex declines.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is partial enlarged view at the utility model Figure 1A；
Fig. 3 is the utility model sucting hole structure schematic diagram；
Fig. 4 is the utility model denoising device structural schematic diagram.
Specific embodiment
As illustrated in the accompanying drawings from 1 to 3, the utility model include blade body 1, the extension wing 2 that is arranged at 1 blade root of blade body
And the tip vane 3 at 1 blade tip of blade body is set；The extension wing 2 is fixed at the side of blade body 1, edge
To blade tip direction, the thickness for extending the wing 2 is gradually reduced the blade root of blade body 1.Extend the wing 2 pressure face ecto-entad gradually to
Lower recess.Blade body 1 uses standard aviation aerofoil profile, by improvement, increases the theoretical chord length of blade root local location, can be most
The utilization of limits more can, and blunt trailing edge aerofoil profile can equally bring the promotion of vane efficiency, and cooperation reduces because blade tip is vortexed
The decline of efficiency caused by and, substantially increases the wind energy utilization of the utility model.
It is provided with suction hole 4 on the suction surface of the extension wing 2, gas vent 5, the suction hole 4 are provided at blade tip
It is connected to by the way that runner is arranged in the inner space of blade body 1 or blade body 1 with the formation of gas vent 5.Utilize blade body 1
The pressure difference of blade root and leaf tip when operation forms the airflow channel from blade root to blade tip, causes blade root suction surface surface gas
Stream is by the effect inside " sucking " blade body 1, to give the separation bubble reenabiling of boundary layer seam, postpones burble point,
While promoting the lift coefficient of aerofoil profile, resistance coefficient is reduced, has advanced optimized the airfoil performance of blade root, improves whole wind
It can utilization rate.The zigzag design of 3 rear of tip vane also has certain effect for reducing blade tip aerodynamic noise simultaneously.
It after the mechanism of the utility model, is computed, it is contemplated that annual electricity generating capacity promotes 8% or so, load increase about 5%, In
Within blade and unit design safe range, blade operational safety will not influence.
As shown in Fig. 4, denoising device is provided at the rear of the tip vane 3, and denoising device is located at leaf
On the inside of the laciniation of sharp winglet 3；The denoising device protrusion is on the pressure face of tip vane 3 comprising preceding facade 7 with
And trailing flank 6, the trailing flank 6 is inclined on tip vane 3 and its outer rim is arc-shaped, and the preceding facade 7 is inclined-plane.
Preceding facade 7 is mutually overlapped with trailing flank 6, and transition is connect between the pressure face of tip vane 3, streamlined structure, preceding facade 7
Towards 3 leading edge side of tip vane.Denoising device it is small can effectively to can reduce blade tip with tip vane 3 using being integrally formed
Boundary layer at 3 rear facade of the wing, reduces noise significantly.Denoising device can not only be provided at the rear of tip vane 3,
Also it can be set at the rear of blade body 1.
Above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；Although referring to aforementioned reality
Example is applied the utility model is described in detail, those skilled in the art should understand that: it still can be to preceding
Technical solution documented by embodiment is stated to modify or equivalent replacement of some of the technical features；And these are repaired
Change or replaces, the spirit and scope for the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution.
Claims (5)
1. a kind of wind generator set blade, it is characterised in that it includes blade body (1), is arranged in blade body (1) blade root
The extension wing (2) at place and the tip vane (3) being arranged at blade body (1) blade tip；
The extension wing (2) is fixed at the side of blade body (1), and the blade root along blade body (1) is expanded to blade tip direction
The thickness of spademan (2) is gradually reduced.
2. a kind of wind generator set blade according to claim 1, it is characterised in that the pressure face of the extension wing (2)
Ecto-entad is recessed gradually downward.
3. a kind of wind generator set blade according to claim 1 or 2, it is characterised in that in the extension wing (2)
It is provided with suction hole (4), is provided at the blade tip of blade body (1) gas vent (5) on suction surface, the suction hole (4) passes through
The inner space of blade body (1) forms with gas vent (5) and is connected to.
4. a kind of wind generator set blade according to claim 1, it is characterised in that the rear of the tip vane (3)
It is serrated.
5. a kind of wind generator set blade according to claim 1 or 4, it is characterised in that in the tip vane (3)
Rear at be provided with denoising device；
The denoising device protrusion is on the pressure face of tip vane (3) comprising preceding facade (7) and trailing flank (6), it is described
Trailing flank (6) is inclined on tip vane (3) and its outer rim is arc-shaped, and the preceding facade (7) is inclined-plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920196438.XU CN209687653U (en) | 2019-02-14 | 2019-02-14 | A kind of wind generator set blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920196438.XU CN209687653U (en) | 2019-02-14 | 2019-02-14 | A kind of wind generator set blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209687653U true CN209687653U (en) | 2019-11-26 |
Family
ID=68601782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920196438.XU Expired - Fee Related CN209687653U (en) | 2019-02-14 | 2019-02-14 | A kind of wind generator set blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209687653U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750196A (en) * | 2022-11-17 | 2023-03-07 | 中材科技风电叶片股份有限公司 | Wind power blade and wind driven generator |
-
2019
- 2019-02-14 CN CN201920196438.XU patent/CN209687653U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115750196A (en) * | 2022-11-17 | 2023-03-07 | 中材科技风电叶片股份有限公司 | Wind power blade and wind driven generator |
| CN115750196B (en) * | 2022-11-17 | 2024-03-12 | 中材科技风电叶片股份有限公司 | Wind power blade and wind power generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191126 |