CN106677978A - Blade jet-flow synergistic system design for wind generator set - Google Patents
Blade jet-flow synergistic system design for wind generator set Download PDFInfo
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- CN106677978A CN106677978A CN201510764907.XA CN201510764907A CN106677978A CN 106677978 A CN106677978 A CN 106677978A CN 201510764907 A CN201510764907 A CN 201510764907A CN 106677978 A CN106677978 A CN 106677978A
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- blade
- air
- wind generator
- flow
- system design
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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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- 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
Abstract
The invention discloses a blade jet-flow synergistic system design for a wind generator set. The invention aims at providing a blade technology for a wind generator and a corresponding airflow transmission control method to improve the performance, in particular, the generating capacity, of the wind generator. The starting speed of the wind generator can be lowed, and the maximum power of the wind generator can keep under the previous design standards through the blade jet-flow synergistic system design disclosed by the invention. The blade jet-flow synergistic system design disclosed by the invention mainly aims at improving the performance of the wind generator in medium-speed and low-speed areas. The flowing of air on the surface of a blade is improved through sucking airflow in the root of the blade and discharging the airflow from the tip. The blade jet-flow synergistic system design disclosed by the invention achieves the purposes of compact design, lowest material need and production cost, lowest noise generated during a running process, and least load increase.
Description
Technical field
The present invention relates to technical field of wind power generation, more particularly to the design of blade of wind-driven generator.
Background technology
The generating efficiency of wind-driven generator is improved from from the point of view of current existing technology the different method of two classes.One class method is optimization blade shape and leaf cross-section；Other class method is that the flow boundary layer air for affecting blade surface adsorbs to improve the flowing of air-flow.The invention of this patent is devoted to the latter, up to now till the field also without it is particularly effective raising wind turbine power generation efficiency method.The main task of this patent is to invent the blade technology and corresponding control method of a kind of wind-driven generator to improve the income of total system, and invention power causes to reach following several aspects：Compact design, as far as possible little materials demand and production cost, produce as far as possible little noise in running, and the increase of load is small.The toggle speed of blower fan is allowed to reduce as far as possible, while to ensure that wind-driven generator peak power does not change.Invention can allow generated energy income of wind-driven generator when wind speed is little to increase significantly.The raising principal security of performance and income is carried out in middle low load region.
The content of the invention
This patent is related to blade lower surface 1；Blade inlet edge 2；Trailing edge 3；Root case (the external trailing edge of root) from 1.2 meters of blade root to blade its maximum width trailing edge region 4；Air draught region (suction hole) 5；Air blast 8；Air draught groove, suction airflow 9 of punching on air draught groove；Winglet 10；Dentation exhaust gas region 11；Blade lower surface blade jet orifice 12；Blade deflector 13；Wing fence 14；Spoiler 15；Airflow duct 16, airflow duct is used for air-flow to lead to trailing edge cavity 7 from air-flow suction area 5；
Air-flow can be accelerated first through blade upper surface due to the Curvature Effect of blade surface, behind maximum curvature position (arrival downstream), air velocity can become big and slack-off due to downstream pressure, boundary layer kinetic energy has loss, so as to cause the increase of boundary layer thickness and the separation of boundary layer and blade upper surface.Air-flow initially moves off blade surface from the burble point in boundary layer, and consequence is the drop in lift of blade and resistance rises.
The purpose for affecting boundary layer is exactly in order to avoid air-flow is from the separation of blade upper surface.Boundary layer has to as far as possible many to be attached to above blade, and the burble point in boundary layer will be close proximity to trailing edge, so as to improve the generating efficiency of wind-driven generator.
This patent mainly takes two ways to affect boundary layer：Air-flow is sucked and airflow exits.The region of rooting box punching is sent out in air-flow suction, and blade surface is close to by air-flow suction in the regional edge interlayer.Airflow exits are to wishing affected Boundary-Layer Zone the airflow exits spun up by blade.The air-flow of discharge can bring energy for boundary layer, so as to keep stablizing for boundary layer for a long time as far as possible.
The main task of this patent is to invent the blade technology and corresponding air stream transportation control method of a kind of wind-driven generator to improve the income of total system, and this patent is related to power and causes to reach following several aspects：Compact design, little materials demand as far as possible, little production cost as far as possible, as far as possible little noise and as far as possible little load are produced in running to be increased.Another task of this patent is to allow generated energy income of the wind-driven generator in little wind speed area to increase significantly.Allow the toggle speed of blower fan to reduce as far as possible, at the same to ensure wind-driven generator peak power to maintain before design standard.The raising principal security of performance and income is carried out in middle low load region.This patent considers to improve emphatically the air current flow of root of blade and is close to blade surface for a long time as far as possible ensureing air-flow, while allow their energy to be utilized as far as possible,
The art of this patent at least needs the trailing edge (see the mark 4 of Fig. 2 roots of blade) that a new flat shape is constructed in root of blade, is air-flow suction area near the new trailing edge.Punching particular location and quantity are determined according to actual conditions.The air-flow suction area plays very big effect for the performance and efficiency that improve wind-driven generator are improved.The material constructed required for the air-flow suction area is also considerably less.Relative to the circular root of blade of traditional blade of wind-driven generator, the load that the design is caused improves very little, therefore and need not do the reinforcing in structure in root.The new trailing edge of construction can be extended down to where root of blade and wheel hub connection.The design can allow blower fan that operating is begun to when wind speed very little, so as to allow more wind energy transformations into electric energy.Design can cause the increase of root of blade region width of blade, but still not over the depth capacity of root of blade before change design.Also whole peaked area need to be sealed in blade tip, it is therefore an objective to form trailing edge seal cavity in the region between root of blade sealing trailing edge and trailing edge web.
One king-sized advantage of the design is that the width of root of blade does not increase how many, as the transport difficulty of blade can be with traditional blade with method.The material that the design is used is identical with manufacture blade material.
The design can also in root of blade using Wortmann aerofoil profiles come the root of blade posterior marginal zone of formation level, can so improve the air current flow of root of blade.Wortmann aerofoil profiles FX77-W-500 of special recommendation, FX77-W-400, FX77-W-343.
New leading edge also can be constructed by Wortmann aerofoil profiles in the leading edge of root of blade if permission, so as to further improve the air current flow of root of blade.Such design can further optimize the performance of wind-driven generator, because such design can ensure that air-flow is all laminar flow in the very big region of root of blade, without causing energy loss because there is turbulent flow.
Air-flow leans on root case trailing edge in the suction position of root case upper surface, first-selection.The boundary layer of impact air-flow that like this can relatively earlier, and allow being attached on blade surface for gas time length as far as possible to flow, can effectively allow the air-flow of root of blade upper surface to be adjacent to completely in the region.Air-flow suction in root case upper surface can combine with the suction of the air-flow of root case trailing edge, and such words efficiency can raise more.
Patent of the present invention needs to construct fluerics (see figure, blade lower surface blade jet orifice 12) in blade lower surface, can significantly improve the performance that air-flow flows in blade surface, reduces boundary layer separation, improves lift-drag ratio, is punching in the region.Deflector can accelerate effluxvelocity, while the region vortex can be destroyed, strengthen boundary layer absorption.
Invention needs to construct winglet and exhaust area, such as Fig. 6 in blade tip.Winglet and blade interior are communicated, and air is discharged from person's posterior border position of winglet.The position of exhaust outlet should be designed so that the shape (inner space is big, exports relatively thin) of NACA-Hutze.If exhaust outlet is too big, just nothing acts on the gas for ejecting with their energy.It is exactly to reduce tip vortex that winglet also has a special effect.The vortex is prevalent in the tip of the blade of traditional design.
Gas can be discharged by being arranged on the hole and/or groove of exhaust gas region, and outline is dentation, and the shape is highly useful for noise is reduced.The hole of particularly dentation profile and inside combines the very effective less noise from air-flow of meeting, such that it is able to reduce the noise pollution to environment.Dentation profile can play a part of to mix well to the gas discharged.Even if winglet is designed to very little, it is also possible to play extraordinary scavenging action.And dentation profile is very easy to manufacture, can be realized using cutting or grinding technics.The air of discharge is discharged can allow the air of blade surface and boundary layer to accelerate, so as to bring extra energy for boundary layer.
In order to further improve the performance of wind-driven generator and reduce the threshold wind velocity of wind-driven generator, can auxiliary equipment be installed in airflow duct to activate boundary layer influence.Can allow air-flow from air-breathing area to exhaust area by the auxiliary equipment or direction transmission.This auxiliary equipment can be pump, ventilation fan, hair-dryer or the equipment that can play similar effect.The unlatching of auxiliary blowing apparatus can be by master control system control.
Improving the performance of wind-driven generator, wing fence and spoiler can affect air-flow to wing fence, reduce the wake turbulence of root of blade, reduce loss of lift.
The installing component mentioned in above-mentioned all schemes for improving wind-driven generator performance can subsequent installation.In order to allow the Blade Properties of traditional design effectively to be improved, at least below three components are necessary：1), the trailing edge of the flat shape of root of blade, the part can be based on the blade of normal circular section shape and be transformed.2), the airflow exits area of blade tip.3), blade jet area.These parts can be arranged on blade using traditional method of attachment.These methods include laminating, bolt connection, bonding or similar method of attachment.
Description of the drawings
Fig. 1, traditional blade design schematic diagram.
Fig. 2, the blade design invention schematic diagram of this patent.
Fig. 3, the root case air draught groove of this patent and airflow duct schematic diagram.
Fig. 4, the blade blade jet orifice and deflector schematic diagram of this patent.
Fig. 5, the trailing edge seal cavity schematic diagram of this patent.
Fig. 6, the blade tip winglet schematic diagram of this patent.
Fig. 7, the air blast and its riding position schematic diagram of this patent.
Reference numerals list
1 blade lower surface
2 blade inlet edges
3 trailing edges
4 casees (the external trailing edge of root)
5 air draught regions (suction hole)
7 trailing edge seal cavities
8 wheel hub bearings
9 air draught grooves
10 winglets
11 dentation exhaust gas regions
12 blade lower surface blade jet orifices
13 blade deflectors
14 wing fences
15 spoilers
16 airflow ducts.
Claims (4)
1. invention includes a kind of wind power generating blade chip technology and corresponding air stream transportation control method, for improving wind turbine power generation
The noise that amount and reduction blade rotation are produced.
2. the art of this patent at least needs the trailing edge (see the mark of Fig. 2 roots of blade) that a new flat shape is constructed in root of blade,
The new trailing edge is air-flow suction area.The air-flow suction area plays very big effect for improving wind power generation efficiency.
3. invention needs to construct exhaust area, first locational requirement in blade tip：In the leeward area of blade, (as schemed, that what is 4) or newly added is little
On the wing.The air discharged from blade upper surface is discharged can allow the air of blade surface and boundary layer to accelerate, so as to bring volume for boundary layer
Outer energy.
4. invention also need to can with subsequent installation blade interior air blast for increasing jet intensity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510764907.XA CN106677978A (en) | 2015-11-11 | 2015-11-11 | Blade jet-flow synergistic system design for wind generator set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510764907.XA CN106677978A (en) | 2015-11-11 | 2015-11-11 | Blade jet-flow synergistic system design for wind generator set |
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| Publication Number | Publication Date |
|---|---|
| CN106677978A true CN106677978A (en) | 2017-05-17 |
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| CN201510764907.XA Pending CN106677978A (en) | 2015-11-11 | 2015-11-11 | Blade jet-flow synergistic system design for wind generator set |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468619A (en) * | 2018-03-26 | 2018-08-31 | 南京航空航天大学 | A kind of centrifugal wind machine blade jet stream power enhancer |
| CN108590955A (en) * | 2018-04-12 | 2018-09-28 | 华中科技大学 | Pneumatic equipment bladess and wind energy conversion system |
| CN109653944A (en) * | 2018-12-18 | 2019-04-19 | 上海理工大学 | A kind of jet-propelled vertical axis windmill of leaf tail |
| CN112253391A (en) * | 2020-10-30 | 2021-01-22 | 上海电气风电集团股份有限公司 | Air flow control device, fan blade comprising same and wind generating set |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004059162A1 (en) * | 2002-12-30 | 2004-07-15 | Iliya Lvovich Shchukin | Method for increasing operating efficiency of the rotor blade of an aerogenerator (variants) |
| CN1774576A (en) * | 2003-02-18 | 2006-05-17 | 里索研究中心 | Method of controlling aerodynamic load of a wind turbine based on local blade flow measurement |
| DE102007056161A1 (en) * | 2007-11-21 | 2009-05-28 | Repower Systems Ag | Method for separating particles or liquid droplets from gases, involves impinging good from body in rotation, where body rotates in swirl chamber, and particles are collected in area at base of swirl chamber |
| WO2010098814A1 (en) * | 2009-02-28 | 2010-09-02 | Ener2 Llc | Improved wind energy device |
| CN204003286U (en) * | 2014-06-30 | 2014-12-10 | 大唐桂冠山东电力投资有限公司 | Improve the device of wind power generating set wind energy utilization |
| CN204921256U (en) * | 2015-03-25 | 2015-12-30 | 北京博比风电科技有限公司 | Aerogenerator blade |
-
2015
- 2015-11-11 CN CN201510764907.XA patent/CN106677978A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004059162A1 (en) * | 2002-12-30 | 2004-07-15 | Iliya Lvovich Shchukin | Method for increasing operating efficiency of the rotor blade of an aerogenerator (variants) |
| CN1774576A (en) * | 2003-02-18 | 2006-05-17 | 里索研究中心 | Method of controlling aerodynamic load of a wind turbine based on local blade flow measurement |
| DE102007056161A1 (en) * | 2007-11-21 | 2009-05-28 | Repower Systems Ag | Method for separating particles or liquid droplets from gases, involves impinging good from body in rotation, where body rotates in swirl chamber, and particles are collected in area at base of swirl chamber |
| WO2010098814A1 (en) * | 2009-02-28 | 2010-09-02 | Ener2 Llc | Improved wind energy device |
| CN204003286U (en) * | 2014-06-30 | 2014-12-10 | 大唐桂冠山东电力投资有限公司 | Improve the device of wind power generating set wind energy utilization |
| CN204921256U (en) * | 2015-03-25 | 2015-12-30 | 北京博比风电科技有限公司 | Aerogenerator blade |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468619A (en) * | 2018-03-26 | 2018-08-31 | 南京航空航天大学 | A kind of centrifugal wind machine blade jet stream power enhancer |
| CN108590955A (en) * | 2018-04-12 | 2018-09-28 | 华中科技大学 | Pneumatic equipment bladess and wind energy conversion system |
| CN108590955B (en) * | 2018-04-12 | 2019-08-27 | 华中科技大学 | Pneumatic equipment bladess and wind energy conversion system |
| CN109653944A (en) * | 2018-12-18 | 2019-04-19 | 上海理工大学 | A kind of jet-propelled vertical axis windmill of leaf tail |
| CN112253391A (en) * | 2020-10-30 | 2021-01-22 | 上海电气风电集团股份有限公司 | Air flow control device, fan blade comprising same and wind generating set |
| CN112253391B (en) * | 2020-10-30 | 2022-02-01 | 上海电气风电集团股份有限公司 | Air flow control device, fan blade comprising same and wind generating set |
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Application publication date: 20170517 |