US20110200446A1 - Multi-panel wind turbine blade with integrated root - Google Patents
Multi-panel wind turbine blade with integrated root Download PDFInfo
- Publication number
- US20110200446A1 US20110200446A1 US13/125,158 US200913125158A US2011200446A1 US 20110200446 A1 US20110200446 A1 US 20110200446A1 US 200913125158 A US200913125158 A US 200913125158A US 2011200446 A1 US2011200446 A1 US 2011200446A1
- Authority
- US
- United States
- Prior art keywords
- blade
- wind turbine
- assembled
- root
- extensions
- Prior art date
- 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.)
- Abandoned
Links
- 230000007704 transition Effects 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0658—Arrangements for fixing wind-engaging parts to a hub
-
- 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
Definitions
- a wind turbine multi-panel blade with an aerodynamic profile made up by at least a lower shell on the pressure side and an upper shell on the suction side and two prefabricated inner crossbeams.
- These lower and upper shells are assembled to these inner crossbeams, in which these lower and upper shells and these prefabricated inner crossbeams include, respectively, some extensions configured in such a way that they can be assembled making up the blade's root.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
A wind turbine multi-panel blade with the integrated root, with an aerodynamic profile made up of at least one lower shell (17) on the pressure side and one upper shell (19) on the suction side and two prefabricated inner crossbeams (11, 13), with these lower and upper shells (17, 19) assembled with these inner crossbeams (11, 13), wherein these lower and upper shells (17, 19) and these prefabricated inner crossbeams (11, 13) including, respectively, some extensions (31, 33, 37, 39) configured so that they can be assembled making up the blade's root. The blade may also include a front shell (15) assembled with the crossbeam (11) nearest to the leading edge next to the lower and upper shells (17, 19).
Description
- This invention generally refers to wind turbine blades and more specifically to multi-panel blades with integrated root.
- Wind turbines include a rotor that supports one or several blades that are spread out radially to capture the wind's kinetic energy and cause a rotary movement of a power train connected to an electric generator to produce electrical power.
- The amount of energy produced by the wind turbines depends on the blade rotor sweep surface that receives the wind action and, consequently, increasing the length of the blades normally implies an increase in the wind turbine's energy production.
- To facilitate the manufacturing of wind turbine blades, the division of the blade into several panels has been proposed that can be manufactured individually perfectly and assembled later on to make up the blade. Some of the proposals known are the following.
- EP 1 184 566 A1 describes a wind turbine blade that is made up assembling one, two or more longitudinal sections, each of which make up a central element made up by a longitudinal carbon fibre tube on which a series of transversal carbon fibre or fibre glass ribs are assembled connected to this central area and a carbon fibre or fibre glass cover connected to these ribs.
- WO 01/46582 A2 describes a wind turbine blade that has a plurality of divided elements connected to the load transmission box beam and separated by gaskets that allow these divided elements movements between each other to minimise the traction forces in the blade region where these divided elements are situated.
- In the known technique, the blade's root is manufactured apart from the panels that make up the rest of the blade, and is assembled later on using a co-curing process or with an adhesive bonding.
- The current trend in the industry for wind turbines with larger rotor blades requires new blade designs suitable for firstly complying with transport and quality conditions set out by large sized blades and secondly by the conditions set out by the manufacturing processes with a view to obtaining the maximum degree of automation.
- An object of this invention is to provide a configuration of a wind turbine blade that allows to prefabricate its components including the blade's root.
- Another object of this invention is to provide a wind turbine blade configuration that positively contributes to automating its manufacturing.
- These and other objects of this invention are achieved providing a wind turbine multi-panel blade with an aerodynamic profile made up by at least a lower shell on the pressure side and an upper shell on the suction side and two prefabricated inner crossbeams. These lower and upper shells are assembled to these inner crossbeams, in which these lower and upper shells and these prefabricated inner crossbeams include, respectively, some extensions configured in such a way that they can be assembled making up the blade's root.
- In a preferred embodiment the blade also includes a front shell assembled to the crossbeam nearest the leading edge together with the lower and upper shells. With this a configuration is obtained that facilitates the shaping of the transition area of these extensions to the circular section root area.
- Other characteristics and advantages of this invention can be inferred from the following detailed description regarding the accompanying figures.
-
FIG. 1 is a schematic view in perspective of a wind turbine blade according to this invention. -
FIGS. 2 a, 2 b and 2 c are schematic views in transversal section by the A-A plane ofFIG. 1 of the three blade embodiments. -
FIG. 3 is a schematic view in perspective of the prefabricated components that make up the blade according to a preferred embodiment of this invention before its assembly. -
FIG. 4 is a view in transversal section of the blade inFIG. 3 by the B-B plane. -
FIG. 5 is a view in transversal section of the blade inFIG. 3 by the C-C plane. - As is well known in the technique, a multi-panel blade has several advantages:
-
- It allows the use of different materials and/or manufacturing processes and/or structural configurations for each part of the blade according to its requirements, which optimises the cost of the blade.
- It makes quality control easier.
- It allows the blade manufacturer to organise its plans according to different criteria and subcontract the manufacturing of any of the parts if this is necessary.
-
FIG. 1 shows the typical aerodynamic profile of a wind turbine blade andFIGS. 2 a, 2 b and 2 c show three possible multi-panel configurations. - In the configurations shown in
FIGS. 2 a and 2 b the blade components are two C shapedcrossbeams front shell 15 and two lower andupper shells FIG. 2 c the blade components are twocrossbeams upper shells - In the configurations shown in
FIGS. 2 a and 2 b the panels are assembled so that, on the one hand, there is continuity in the threeshells shells crossbeam 11 next to the leading edge and the lower andupper shells crossbeam 13. - In the configuration shown in
FIG. 2 c the panels are assembled so that, on the one hand, there is continuity in the lower andupper shells upper shells cross beams - According to this invention (applicable to the multi-panel configurations mentioned and to any others in which the lower and
upper shells crossbeams 11, 13), thecrossbeams lower shells extensions - Thus, and as shown in
FIGS. 4 and 5 , that correspond to any of the blades shown inFIGS. 2 a, and 2 b, the configurations of theseextensions first area 31′, 33′, 37′, 39′ with which the root transition section of the blade is made up and asecond area 31″, 33″, 37″, 39″ with a circular sector shape to make up the circular section of the root of the blade. - The assembly of these
extensions shells crossbeams - Among the advantages of this integrated root configuration with respect to the traditional root structure stuck or co-cured to the rest of the blade, the following are worthy of mention:
-
- Better control of the root area's geometry, as all the parts are carried out with female moulds.
- Improvement in the assembly of the different parts that make up the blade (directly derived from the greater dimensional control mentioned in the previous paragraph).
- Less time in finishing phase (cutting of surplus material, polishing, reworks) due to the better dimensional control of the parts to be assembled.
- More reinforced structure: the configuration with the integrated root in composite material allows for having reinforcement fibre continually from the tip of the blade to the root which facilitates the correct transmission of the stresses through the structure.
- Although this invention has been described entirely in terms of preferred embodiments, it is clear that could be introduced modifications within its scope, not regarding the latter as limited by the embodiments described above, rather by the following claims.
Claims (5)
1. A wind turbine multi-panel blade with an aerodynamic profile made up of at least one lower shell (17) on the pressure side and one upper shell (19) on the suction side and two prefabricated inner crossbeams (11, 13), with these lower and upper shells (17, 19) assembled with these inner crossbeams (11, 13), wherein these lower and upper shells (17, 19) and these prefabricated inner crossbeams (11, 13) including, respectively, some extensions (31, 33, 37, 39) configured so that they can be assembled making up the blade's root.
2. A wind turbine multi-panel blade with an aerodynamic profile according to claim 1 , wherein it also having a front shell (15) assembled with the nearest crossbeam (11) to the leading edge next to the lower and upper shells (17, 19).
3. A wind turbine blade according to claim 1 , wherein the configuration of these extensions (31, 33, 37, 39) including a first area (31′, 33′, 37′, 39′) with which the transition section of the root of the blade and a second area (31″, 33″, 37″, 39″) with a circular sector shape is made to make the circular section of the root of the blade.
4. A wind turbine blade according to claim 1 , wherein these extensions (31, 33, 37, 39) being assembled using an adhesive bonding.
5. A wind turbine blade according to claim 1 , wherein these extensions (31, 33, 37, 39) being assembled using a riveted joint.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200803064A ES2341074B1 (en) | 2008-10-28 | 2008-10-28 | A MULTI-PANEL AEROGENERATOR SHOVEL WITH INTEGRATED ROOT. |
ESP200803064 | 2008-10-28 | ||
PCT/ES2009/070459 WO2010049561A1 (en) | 2008-10-28 | 2009-10-26 | A multiple-panel wind generator blade with integrated root |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110200446A1 true US20110200446A1 (en) | 2011-08-18 |
Family
ID=42128293
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/125,158 Abandoned US20110200446A1 (en) | 2008-10-28 | 2009-10-26 | Multi-panel wind turbine blade with integrated root |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110200446A1 (en) |
EP (1) | EP2341240A1 (en) |
CN (1) | CN102197217A (en) |
ES (1) | ES2341074B1 (en) |
WO (1) | WO2010049561A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130129517A1 (en) * | 2010-05-20 | 2013-05-23 | Tecsis Tecnologia E Sistemas Avancados S.A. | Aerogenerator blade and manufacturing method thereof |
US9970412B2 (en) | 2012-09-26 | 2018-05-15 | Blade Dynamics Limited | Wind turbine blade |
US10041471B1 (en) * | 2017-02-09 | 2018-08-07 | Mitsubishi Heavy Industries, Ltd. | Wind turbine blade and reinforcing method for wind turbine blade |
US11002247B2 (en) * | 2016-07-19 | 2021-05-11 | Lm Wind Power Us Technology Aps | Wind turbine blade with flatback root segment and related method |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI20105594L (en) * | 2010-05-26 | 2011-11-27 | Meteco Oy | A shovel and a method of making it |
EP2400147A1 (en) * | 2010-06-25 | 2011-12-28 | Siemens Aktiengesellschaft | Root of the blade of a wind turbine |
ES2398553B1 (en) * | 2011-02-24 | 2014-02-06 | Gamesa Innovation & Technology S.L. | A MULTI-PANEL IMPROVED AIRPLANE SHOVEL. |
GB201118419D0 (en) | 2011-10-25 | 2011-12-07 | Blade Dynamics Ltd | A method of making a root end joint of a wind turbine blade and a root segment for such a joint |
RU2499155C2 (en) * | 2012-02-01 | 2013-11-20 | Андрей Леонидович Шпади | Vane blade |
GB201215004D0 (en) | 2012-08-23 | 2012-10-10 | Blade Dynamics Ltd | Wind turbine tower |
GB201217210D0 (en) | 2012-09-26 | 2012-11-07 | Blade Dynamics Ltd | A metod of forming a structural connection between a spar cap fairing for a wind turbine blade |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070217918A1 (en) * | 2006-03-20 | 2007-09-20 | Baker Myles L | Lightweight composite truss wind turbine blade |
US20080206062A1 (en) * | 2007-02-28 | 2008-08-28 | Gamesa Innovation & Technology, Sl. | Wind turbine multi-panel blade |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4423115A1 (en) * | 1994-07-01 | 1996-01-04 | Wolf Hirth Gmbh | Propeller blades made of plastic material and process for its manufacture |
WO2008052677A2 (en) * | 2006-11-02 | 2008-05-08 | Lignum Vitae Limited | Wind rotor blade and wind turbine comprising such blade |
-
2008
- 2008-10-28 ES ES200803064A patent/ES2341074B1/en not_active Expired - Fee Related
-
2009
- 2009-10-26 EP EP09823116A patent/EP2341240A1/en not_active Withdrawn
- 2009-10-26 US US13/125,158 patent/US20110200446A1/en not_active Abandoned
- 2009-10-26 CN CN2009801431505A patent/CN102197217A/en active Pending
- 2009-10-26 WO PCT/ES2009/070459 patent/WO2010049561A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070217918A1 (en) * | 2006-03-20 | 2007-09-20 | Baker Myles L | Lightweight composite truss wind turbine blade |
US20080206062A1 (en) * | 2007-02-28 | 2008-08-28 | Gamesa Innovation & Technology, Sl. | Wind turbine multi-panel blade |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130129517A1 (en) * | 2010-05-20 | 2013-05-23 | Tecsis Tecnologia E Sistemas Avancados S.A. | Aerogenerator blade and manufacturing method thereof |
US9970412B2 (en) | 2012-09-26 | 2018-05-15 | Blade Dynamics Limited | Wind turbine blade |
US11002247B2 (en) * | 2016-07-19 | 2021-05-11 | Lm Wind Power Us Technology Aps | Wind turbine blade with flatback root segment and related method |
US10041471B1 (en) * | 2017-02-09 | 2018-08-07 | Mitsubishi Heavy Industries, Ltd. | Wind turbine blade and reinforcing method for wind turbine blade |
Also Published As
Publication number | Publication date |
---|---|
WO2010049561A1 (en) | 2010-05-06 |
ES2341074B1 (en) | 2011-05-20 |
ES2341074A1 (en) | 2010-06-14 |
CN102197217A (en) | 2011-09-21 |
EP2341240A1 (en) | 2011-07-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: GAMESA INNOVATION & TECHNOLOGY, S.L., SPAIN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:GARCIA VIDORRETA, ENRIQUE;REEL/FRAME:026156/0899 Effective date: 20110104 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |