CN106468240A - A kind of wind generator set blade synergistic device design - Google Patents
A kind of wind generator set blade synergistic device design Download PDFInfo
- Publication number
- CN106468240A CN106468240A CN201510515123.3A CN201510515123A CN106468240A CN 106468240 A CN106468240 A CN 106468240A CN 201510515123 A CN201510515123 A CN 201510515123A CN 106468240 A CN106468240 A CN 106468240A
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- Prior art keywords
- blade
- wind
- air
- driven generator
- root
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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
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Abstract
The main task of the present invention is to invent a kind of blade technology of wind-driven generator and corresponding air stream transportation control method to improve the performance particularly generated energy of wind-driven generator.The toggle speed of wind-driven generator machine can be allowed to reduce by the invention in the present invention, the design standard before guarantee wind-driven generator peak power maintains simultaneously.The present invention mainly improves wind-driven generator performance in Zhong Di wind speed area.The present invention discharges, using in root of blade suction airflow with vane tip, the flowing that air-flow to improve blade surface air.The present invention relates to power causes to reach following several aspect：Compact design, little materials demand and production cost as far as possible, produce as far as possible little noise in running, the increase of load is tried one's best and reduced.
Description
Technical field
The present invention relates to the design of technical field of wind power generation, more particularly, to blade of wind-driven generator.
Background technology
The generating efficiency improving wind-driven generator from the point of view of existing technology at present has the different method of two classes.One class method is to optimize blade shape and leaf cross-section；An other class method is that the flow boundary layer air of impact blade surface adsorbs to improve the flowing of air-flow.The invention of this patent is devoted to the latter, up to now till this field also do not have particularly effective improve wind turbine power generation efficiency method.The main task of this patent is to invent a kind of blade technology of wind-driven generator and corresponding control method to improve the income of total system, and invention power causes to reach following several aspect：Compact design, little materials demand and production cost as far as possible, produce as far as possible little noise in running, the increase of load is small.Allow the toggle speed of blower fan reduce as far as possible, will ensure that wind-driven generator peak power does not change simultaneously.Invention can allow generated energy income when wind speed is little for the wind-driven generator increase significantly.The raising principal security of performance and income is carried out in middle low load region.
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) at away from 1.2 meters of blade root to blade its maximum width trailing edge region 4；Air draught region (suction hole) 5；Winglet 6；Dentation exhaust gas region 7；Wing fence 8；Airflow duct 9, airflow duct is used for air-flow to lead leading edge edge cavity 7 from air-flow suction area 5；Air draught groove, suction airflow 10 of punching on air draught groove；
Air-flow can be accelerated due to the Curvature Effect of blade surface first through blade upper surface, behind maximum curvature position (arrival downstream), air velocity can become big and slack-off due to downstream pressure, boundary region kinetic energy has loss, thus causing the increase of boundary layer thickness and the separation of boundary region and blade upper surface.Air-flow initially moves off blade surface from the burble point of boundary region, and consequence is the drop in lift of blade and resistance rises.
The purpose of impact boundary region is exactly in order to avoid air-flow is from the separation of blade upper surface.Boundary region have to try one's best many be attached to above blade, the burble point of boundary region will be close proximity to trailing edge, thus improving the generating efficiency of wind-driven generator.
This patent mainly takes two ways to affect boundary region：Air-flow sucks and airflow exits.Air-flow sucks the region sending out rooting box punching, sucks to be close to blade surface by air-flow in this regional edge interlayer.Airflow exits are to wishing affected Boundary-Layer Zone the airflow exits being spun up by blade.The air-flow of discharge can bring energy for boundary region, thus keeping stablizing of boundary region as far as possible for a long time.
The main task of this patent is the income inventing a kind of blade technology of wind-driven generator and corresponding air stream transportation control method to improve total system, and this patent is related to power and causes to reach following several aspect：Compact design, little materials demand as far as possible, little production cost as far as possible, produces as far as possible little noise in running and as far as possible little load increases.The another one task of this patent is to allow the generated energy income in little wind speed area for the wind-driven generator to increase significantly.Allow the toggle speed of blower fan reduce as far as possible, to ensure simultaneously 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 is focused on to consider to improve the air current flow of root of blade and is close to blade surface for a long time ensureing air-flow as far as possible, allows their energy be utilized as far as possible simultaneously,
The art of this patent at least needs to construct the trailing edge (see the mark 4 of Fig. 2 root of blade) of a new flat shape in root of blade, is air-flow suction area near this new trailing edge.Punching particular location and quantity determine according to practical situation.Very big effect is played for the performance improving wind-driven generator and efficiency raising in this air-flow suction area.Construct this material required for air-flow suction area also considerably less.The root of blade circular with respect to traditional blade of wind-driven generator, the load raising that this design causes is very little, does not therefore need to do the strengthening in structure in root.The new trailing edge of construction can extend down to the place that root of blade and wheel hub connect.This design can allow blower fan begin to operate, thus allowing more wind energy transformation become electric energy when wind speed very little.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 region between blade inlet edge and leading edge edge web need to be sealed in root of blade, seal whole peaked area it is therefore an objective to form blade inlet edge seal cavity in blade tip.
One king-sized advantage of this design is how many width of root of blade does not have increase, and the transport difficulty of blade can be the same with traditional blade with method.The material that this design uses is identical with manufacturing blade material.
The design can also carry out the root of blade posterior marginal zone of formation level in root of blade using Wortmann aerofoil profile, so can improve the air current flow of root of blade.Wortmann aerofoil profile FX77-W-500 of special recommendation, FX77-W-400, FX77-W-343.
Also new leading edge can be constructed by Wortmann aerofoil profile in the leading edge of root of blade, thus improving the air current flow of root of blade further if permission.Such design can optimize the performance of wind-driven generator further, 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.Like this can impact air-flow relatively earlier boundary region, and allow gas time length as far as possible be attached to flowing on blade surface, can effectively allow the air-flow of root of blade upper surface be adjacent to completely in this region.Suck to suck with the air-flow of root case trailing edge in the air-flow of root case upper surface and combine, such words efficiency can raise more.
Invention needs to construct winglet and exhaust area, such as Fig. 4 in blade tip.Winglet and blade interior communicate, and air is discharged from person's posterior border position of winglet.The position of air vent should be designed so that the shape (inner space is big, exports relatively thin) of NACA-Hutze.If air vent is too big, the gas ejecting and their energy just do not have effect.It is exactly to reduce tip vortex that winglet also has a special effect.This vortex is prevalent in the tip of the blade of traditional design.
Gas can be discharged by the hole and/or groove that are arranged on exhaust gas region, and outline is dentation, and this shape is highly useful for reducing noise.Particularly dentation profile and internal hole combine 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 the effect mixed well to expellant gas.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, and can be realized using cutting or grinding technics.The air discharge discharged can allow the air of blade surface and boundary region accelerate, thus bringing extra energy for boundary region.
Improving the performance of wind-driven generator, wing fence can affect air-flow to wing fence, reduce the wake turbulence of root of blade, reduce loss of lift.
Can subsequent installation in above-mentioned all installing components mentioned in the scheme of wind-driven generator performance that improve.In order to allow the Blade Properties of traditional design effectively to be improved, at least three assemblies are necessary below：1), the trailing edge of the flat shape of root of blade, this part can be transformed based on the blade of normal circular section shape.2), the airflow exits area of blade tip.These parts can be arranged on blade using traditional method of attachment.These methods include laminating, bolt connection, bonding or similar method of attachment.
Brief description
Fig. 1, traditional blade design schematic diagram.
Fig. 2, the blade design invention schematic diagram of this patent.
Fig. 3, the airflow duct schematic diagram of this patent.
Fig. 4, the tip vane schematic diagram of this patent.
Fig. 5, the blade inlet edge seal cavity schematic diagram of this patent.
Fig. 6, the air draught groove 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)
6 winglets
7 dentation exhaust gas regions
8 wing fences
9 airways
10 air draught grooves.
Claims (3)
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
Amount and the noise reducing blade rotation generation.
2. the art of this patent at least needs to construct the trailing edge (see the mark of Fig. 2 root of blade) of a new flat shape in root of blade,
This new trailing edge is air-flow suction area.Very big effect is played for improving wind power generation efficiency in this air-flow suction area.
3. invention needs to construct exhaust area in blade tip, on the new winglet trailing edge adding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515123.3A CN106468240A (en) | 2015-08-20 | 2015-08-20 | A kind of wind generator set blade synergistic device design |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510515123.3A CN106468240A (en) | 2015-08-20 | 2015-08-20 | A kind of wind generator set blade synergistic device design |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106468240A true CN106468240A (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510515123.3A Pending CN106468240A (en) | 2015-08-20 | 2015-08-20 | A kind of wind generator set blade synergistic device design |
Country Status (1)
| Country | Link |
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| CN (1) | CN106468240A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266313A (en) * | 2018-02-27 | 2018-07-10 | 青岛华创风能有限公司 | A kind of low pneumatic noise Wind turbines |
| CN109989876A (en) * | 2017-12-29 | 2019-07-09 | 江苏金风科技有限公司 | Blade and wind power generating set including it |
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
- 2015-08-20 CN CN201510515123.3A patent/CN106468240A/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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989876A (en) * | 2017-12-29 | 2019-07-09 | 江苏金风科技有限公司 | Blade and wind power generating set including it |
| CN109989876B (en) * | 2017-12-29 | 2020-06-19 | 江苏金风科技有限公司 | Blade and wind generating set comprising same |
| CN108266313A (en) * | 2018-02-27 | 2018-07-10 | 青岛华创风能有限公司 | A kind of low pneumatic noise Wind turbines |
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Application publication date: 20170301 |