CN205977532U - Root of blade wing fence - Google Patents
Root of blade wing fence Download PDFInfo
- Publication number
- CN205977532U CN205977532U CN201620396520.3U CN201620396520U CN205977532U CN 205977532 U CN205977532 U CN 205977532U CN 201620396520 U CN201620396520 U CN 201620396520U CN 205977532 U CN205977532 U CN 205977532U
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- CN
- China
- Prior art keywords
- blade
- root
- wing fence
- wind
- turbine generator
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Wind Motors (AREA)
Abstract
The utility model discloses a main task is on existing traditional leaf structure, optimizes the improvement to the root of blade, constructs a new pneumatic appearance. Through designing a root of blade wing fence, improve in low wind speed resource district, model power is more than 1.5MW, and the big megawatt level wind turbine generator system's more than the diameter of impeller 77 rice the wind energy of catching is done all can, improves this region wind turbine generator system's generating capacity. The utility model has the advantages that do not have any destruction to original leaf structure, adopt the production technology the same with traditional blade, through increasing little materials, install the wing fence structure additional at the root of blade, improved the formation and development of the root of blade vortex, almost do not have any influence to blade and unit intensity, effectively promoted low wind speed region, megawatt level, big blades wind turbine generator system's generating capacity.
Description
Technical field
This patent is related to technical field of wind power generation, and more particularly, to one kind is used for lifting the big blade of low wind speed region MW class
The root of blade wing fence of Wind turbines power.
Background technology
China's Wind Power Generation Industry experienced the high speed development in Eleventh Five-Year Plan period, high wind speed Feng Qu market is carved up substantially
Finish, low wind speed and wind area becomes wind-powered electricity generation industry new round investment priority.Low wind speed wind-powered electricity generation is as China's most area wind energy money
The form of expression in source, potentiality to be exploited is huge, have close load center, grid-connected convenience, net capacity requirement relatively low, to electrical network
Management and running affect the advantage such as little, but the low key problem being to restrict its development of wind energy conversion efficiency.For solving this problem, mesh
The mode that countermeasure on front market to increase rotor diameter generally by lengthened blades and to increase tower height, these
Method can increase the conversion efficiency of wind energy to a certain extent, but the blower fan weight increase producing therewith, cost increase, unit
The problems such as safety is affected, governs the development of wind energy efficiency switch technology always, and effect is all inconspicuous.
Blade is the critical component that wind power generating set effectively captures wind energy.Wind turbines catch height and the blade of wind energy power
Aerofoil profile have close relationship, aerofoil profile one of form of expression after aerodynamic optimization as blade, to blade
Aerodynamic characteristics has important impact.One good aerofoil profile has higher lift-drag ratio, and then blower fan can reach relatively
High wind energy conversion efficiency.But blower fan is in normal course of operation, the blade tip of blade and blade root branch produce and hinder blower fan fortune
The vortex of row, makes the conversion efficiency of wind energy reduce.
Content of the invention
For above deficiency, the purpose of this patent is for low wind speed region, MW class, big blade Wind turbines, especially
It is power in more than 1.5MW, unit more than 77 meters for the impeller diameter simultaneously, a kind of leaf that can effectively improve generated energy of design
Piece power ascension Pneumatic component, thus improve low wind speed region, MW class, the generating capacity of big blade Wind turbines.
During blade normal work, preferable working condition be blade surface air-flow can be formed well attachment no separate
Flowing, but in unit actual moving process, affected by the angle of attack, vane airfoil profile and thickness etc. factor, air-flow is before flowing through
Just there is different degrees of released state, the angle of attack is bigger, air-flow occurs detached degree will increase therewith with blade after edge, point
Air-flow from area can form larger vortex because losing aerofoil profile effect, and this can increase the running resistance of blade, reduces unit
Wind energy conversion efficiency.
In order to avoid the generation of above-mentioned vortex, and realize lifting Wind turbines power purpose, this patent is by following technology
Scheme is realized：
By transforming to traditional blades (as Fig. 1), carry out, based on aerodynamic Optimal improvements, forming new gas
Dynamic profile, such as Fig. 2.
This utility model patent is related to blade root 1；Blade inlet edge 2；Trailing edge 3；Blade pressure surface 4；Blade suction surface
5；Wing fence 6；
Blade, in running, can produce pressure differential between the pressure face of blade and suction surface, the presence of pressure reduction makes pressure
The air-flow in power face bypasses blade surface and blows to suction surface, and air-flow is destroyed in the preferable two-dimensional flow situation of blade surface,
Vortex can be produced simultaneously, increase the running resistance of blade.
The leaf root part of blade, relatively rotates that speed is not high, but the throughput due to passing through is big, and a part of air-flow is by cabin
Stop is returned, and hub portion, also in rotation, under the immixture of these factors above-mentioned, will produce fall in leaf root part simultaneously
The vortex of low blower fan conversion efficiency.
For avoiding the impact to blower fan service efficiency for the above-mentioned vortex, I takes charge of this root of blade wing fence of invention, to tradition
Blade and blade root aerodynamic configuration is optimized and is improved, in order to improve the generated energy of Wind turbines.
The main task of this patent is in existing traditional blades structure, is optimized improvement, constructs a kind of new
Aerodynamic configuration.In the case of destruction no any to blade, to construct more rational aerodynamic surface design, increase as far as possible few
Material, takes construction technology as far as possible simple to operation, to improve the catch wind efficiency of blade to greatest extent, improves Wind turbines
Generated energy.Another task is by designing a kind of root of blade wing fence structure, to improve in low wind speed resource-area, type power
In more than 1.5MW, the big megawatt-level wind unit that more than 77 meters of impeller diameter catch wind energy power, improve this region Wind turbines
Generating capacity.
This patent needs to increase a kind of Pneumatic component in traditional blades root：Wing fence, to construct a kind of new aerodynamic configuration.
In this patent, described wing fence is arranged on root of blade, near blade root flange direction.It it is one piece with cambered curved
Plate, radian direction is convex to blade tip side, and wing fence center drilling and blade contact face are realized installing with type.
In blade rotary course, described wing fence passes through with blade rotation, to a certain extent to wheel hub and cabin direction shape
The vortex becoming plays barrier effect, reduces blade root tail end turbulent flow, alleviates the resistance that blade is run.
The advantage of this patent be according to the wind-resources characteristic of disparity items, blade aerodynamic characteristic, unit is installed performance special
Property, in conjunction with factors such as production and installation costs, being customized, personalized designs, to realize meeting every safety index
Under the premise of, the generated output of lifting Wind turbines.
This patent no any destruction to original blade construction, adopts and traditional blades identical production technology, by increasing
Little material, installs wing fence structure additional in root of blade, improves the formation and development of root of blade vortex, to blade and unit
Intensity almost has no effect, and effectively improves low wind speed region, MW class, the generating capacity of big blade Wind turbines.
Brief description
Fig. 1, traditional blade design schematic diagram
Fig. 2, the wing fence invention schematic diagram of this patent
Reference numerals list
1 blade root
2 blade inlet edges
3 trailing edges
4 blade pressure surfaces
5 blade suction surfaces
6 wing fences
Specific embodiment
The above-mentioned wing fence structure design patent for improving wind electricity blade power ascension, both can in the blade production phase,
Directly implement on finished product blade it is also possible in specific wind energy turbine set project, the fan blade of operation is carried out with the later stage changes
Make.
In order to realize the purpose of Wind turbines power ascension, it is necessary for installing following assembly additional：The wing of root of blade
Knife structure.Can be transformed based on traditional blades structure when being embodied as, the production of required Pneumatic component and installation, all permissible
Production technology using traditional blades.Part produces can be realized using the technique such as priming by vacuum, laminating, and installation can adopt
The techniques such as handss paste fiber cloth reinforcement, structure glue bonding, putty filling, polishing are realized.
Claims (1)
1. a kind of root of blade wing fence for lifting the big blade Wind turbines power of low wind speed region MW class, its feature exists
In this wing fence is a kind of aerodynamic configuration in root of blade construction, and described wing fence is arranged on root of blade, near blade root flange side
To, be one piece with cambered bent plate, radian direction is convex to blade tip side, and wing fence center drilling is realized with type with blade contact face
Install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620396520.3U CN205977532U (en) | 2016-05-05 | 2016-05-05 | Root of blade wing fence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620396520.3U CN205977532U (en) | 2016-05-05 | 2016-05-05 | Root of blade wing fence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205977532U true CN205977532U (en) | 2017-02-22 |
Family
ID=58018923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620396520.3U Active CN205977532U (en) | 2016-05-05 | 2016-05-05 | Root of blade wing fence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205977532U (en) |
-
2016
- 2016-05-05 CN CN201620396520.3U patent/CN205977532U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |