EP2572103A1 - Pale de rotor d'une éolienne - Google Patents

Pale de rotor d'une éolienne

Info

Publication number
EP2572103A1
EP2572103A1 EP11716549A EP11716549A EP2572103A1 EP 2572103 A1 EP2572103 A1 EP 2572103A1 EP 11716549 A EP11716549 A EP 11716549A EP 11716549 A EP11716549 A EP 11716549A EP 2572103 A1 EP2572103 A1 EP 2572103A1
Authority
EP
European Patent Office
Prior art keywords
rotor blade
insert parts
steel
metal insert
blade according
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.)
Withdrawn
Application number
EP11716549A
Other languages
German (de)
English (en)
Inventor
Stephan Drewes
Thomas FLÖTH
Mark Hirt
Lothar Patberg
Peter Seyfried
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Steel Europe AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ThyssenKrupp Steel Europe AG filed Critical ThyssenKrupp Steel Europe AG
Publication of EP2572103A1 publication Critical patent/EP2572103A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/30—Lightning protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/60—Properties or characteristics given to material by treatment or manufacturing
    • F05B2280/6003—Composites; e.g. fibre-reinforced
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/04—Composite, e.g. fibre-reinforced
    • 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

  • the invention relates to a rotor blade for a
  • Wind turbine comprising a rotor blade root and a
  • Rotor diameter from 80 to 160 m have.
  • a rotor blade consists of a rotor blade root for connecting the
  • Rotor blade to the rotor hub and a rotor blade profile is an optimal transfer of
  • the rotor blade root serves for
  • Rotor diameters greater than 80 m will be a combination of glass fiber reinforced plastics (GRP) and Kc reinforced plastics (CFRP) used.
  • Hybrid construction is very expensive.
  • the aim of the hybrid construction is to keep the deflection or deflection of the individual rotor blade as low as possible under extreme rotor diameters.
  • Another problem is the lightning protection system of the rotor blades, which causes additional costs in the manufacture of the rotor blades in said hybrid construction.
  • the present invention is the
  • the object of the invention is to provide a rotor blade which can easily be produced even with very long lengths and moreover allows a simplified integration of a lightning protection system.
  • this object is achieved for a generic rotor blade in that the rotor blade consists at least partially of a fiber composite plastic embedded in the matrix of the fiber composite plastic metal insert parts.
  • the use of metal inserts, in particular of steel, in a fiber composite plastic matrix enables the advantageous mechanical properties of metal,
  • Metal insert parts in the fiber composite plastic matrix readily integrate into the previous production process, so that no higher costs are expected in the production.
  • the proportion of CFRP plastics can be significantly reduced or avoided by using the metal insert parts, so that a more cost-effective production is made possible.
  • the metal inserts can be used as
  • a particularly cost-saving variant can be provided according to a further embodiment of the rotor blade according to the invention in that metal inserts are embedded in a matrix of a glass fiber reinforced plastic (GfK) and the metal insert parts extend at least partially in the longitudinal direction of the rotor blade.
  • GfK glass fiber reinforced plastic
  • Carbon fiber reinforced plastics significantly cheaper. These can be made particularly resistant to bending in combination with the metal insert parts as composite materials.
  • the metal inserts can be used both in the
  • Rotor blade be provided as well as in the rotor blade root, so that no additional inserts must be provided for the connection of the rotor blade and the rotor hub.
  • the metal insert parts follow the contour of the rotor blade, so that the aerodynamic properties of the rotor blade profile which are normally present can also be ensured with the design according to the invention.
  • Rotor blade root as well as to meet in the rotor blade profile, the metal insert parts according to a further embodiment of the rotor blade according to the invention
  • Metal insert parts are optionally arranged in a plurality of layers in the rotor blade. Different for a long time
  • inserts can be arranged so that a large number of layers with metal inserts are present in the area of the rotor blade root and only a few metal inserts remain in the region of the rotor blade tip
  • the one-piece or consisting of a single material metal inserts are optimally adapted to many years of use in the rotor blade. In principle, there is also the possibility
  • the metal insert parts extend at least partially into the rotor blade root. This embodiment of the invention ensures a better transmission of the forces acting on the rotor blade profiles forces on the
  • Metal inserts in the area of the rotor blade root can also be avoided.
  • Embodiment of the rotor blade according to the invention formations and / or punches.
  • the formations may be that, for example, a fold is provided, which is additionally introduced into the fiber composite matrix and thus an improved anchoring and thus an improved power transmission to the metal insert part entails.
  • other forms For example, deep-drawn areas or embossments conceivable. Die cuts, such as perforations, not only allow a reduction in the weight of the metal insert, but also that the fiber composite plastic can enclose the metal insert part particularly well and insofar as the anchoring of the metal insert is improved in the fiber composite plastic matrix.
  • Metal inserts are used, for example, carbon steel, which are surface-coated or made of stainless steel.
  • carbon steel which are surface-coated or made of stainless steel.
  • Steel insert optimized rotor blade can be made available by at least the outside
  • Lightning protection system can be used.
  • metal insert parts are provided which at least partially consist of a plurality of overlapping ones
  • Metal strips exist and optionally the arrangement of a
  • Corresponding metal insert parts have per se already different stiffnesses due to their structure and can provide these in a simple manner in connection with the fiber composite plastic in the rotor blade.
  • the metal insert parts according to a further embodiment of the rotor blade according to the invention may have a thickness of 0.3 mm to 5 mm, preferably a thickness of 1.0 to 3.0 mm. In these thickness ranges, in particular the
  • the straps serve to absorb the bending moments of the rotor blade profile and can therefore by the use of metal inserts in relation to her
  • Rotor blade nose also transverse forces on the rotor blade.
  • Metal insert parts are preferably also provided in the rotor blade profile nose. This also applies to the wind deflected rotor blade profile / which must meet essentially aerodynamic purposes.
  • Half shells can be used instead of the webs to improve the
  • Stiffness can also be arranged a spar.
  • the spar may preferably be made using metal inserts. In principle, however, it is also conceivable to use the rotor blade according to the invention using the
  • the rotor blade according to the invention is advantageously configured in that the rotor blade has a length of more than 40 m.
  • Rotor blades with a length of more than 40 m usually use cost-intensive CFRP plastics.
  • the rotor blade according to the invention therefore has compared to the previously known rotor blades with corresponding lengths significantly reduced manufacturing costs, since CFRP is substituted by metal insert parts.
  • FIG. 1 is a schematic, perspective view of an embodiment of a rotor blade according to the invention and its cross-sectional shape at three different positions,
  • FIG. 2 is a longitudinal section of the embodiment of FIG. 3 shows a schematic, perspective view of four different examples of metal insert parts and
  • Fig. 4 is a sectional view of an embodiment
  • Fig. 1 shows an embodiment of a rotor blade 1 according to the invention, which has a rotor blade root 2 and a
  • Rotor blade profile 3 has. From the rotor blade profile 3, the cross-sectional shapes in the region of the sections A, B and C are additionally shown in Fig. 1. Steel insert parts are used as metal inserts. The steel inserts 4 extend in the present embodiment of the rotor blade root 2 to partially in the rotor blade tip. This is a very good stiffness of
  • Rotor blade profile reached in the rotor blade root Furthermore, the steel inserts 4 can be used for coupling the rotor blade to the rotor hub of the wind turbine (not shown).
  • Layers 5, 6, 7, the steel insert 4 can absorb higher bending moments in the region of the rotor blade root and make the rotor blade root particularly rigid.
  • Section B shows that here only two layers 5, 6 at
  • Steel inserts 4 are available. This can be achieved, for example, by using different lengths of steel insert 4 to the different Loading areas of the rotor blade 1 to meet. In the rotor blade tip, section C, only one layer 5 of steel insert parts 4 is provided. The use of different numbers of layers of the inserts also results in a weight reduction of the entire
  • Rotor blade 1 taking into account the respective
  • FIG. 1 shows that the rotor blade 1 in
  • Haibschalentechnik consisting of the half-shells 8a and 8b is made with an inner and longitudinally extending spar 9.
  • the spar 9 serves to accommodate
  • Rotor blade profile 3 can be produced using a GRP plastic and achieve the desired stiffness through the use of steel inserts, so that the cost-intensive CFRP plastics can be largely dispensed with.
  • CFRP plastics in conjunction with steel inserts
  • the steel inserts 4 follow the contour of the
  • Embodiment provided both in the rotor blade profile nose 3a and in the rotor blade profile 3b, so that the Rotor blade 1 can also meet the necessary aerodynamic requirements.
  • the upper and lower straps 3c and 3d of the rotor blade profile 3 also have
  • Steel insert 4 and are thus optimally adapted to absorb tensile and compressive stresses due to bending moments of the rotor blade profile 3.
  • FIG. 2 shows the embodiment of FIG. 1 in a longitudinal section along the rotor blade profile 3.
  • Rotor blade thereby still manufacture in a simple manner.
  • the steel insert parts 4 can namely be readily integrated into the existing production process for the production of the rotor blade 1.
  • FIG. 3 Different embodiments of the steel inserts are shown in FIG. 3 in a schematic perspective view
  • the steel inserts 10, 11, 12, 17 each have punches 13, through which the
  • Plastic material such as a glass fiber
  • Fig. 3b is an embodiment of a
  • Punching 13 has, but beyond a
  • a further improvement in contrast is achieved in that in addition to a collar 14, an additional flange portion 15 is provided, which in turn protrudes angled from the collar 14.
  • the steel insert 12 has in all areas, i. also in the collar region 14 and flange region 15,
  • the steel application part 17 can be formed into a hollow profile, in which case the punches can also be dispensed with. As a result, further weight can be saved since the hollow profile is embedded as a closed profile filled with air in the plastic matrix.
  • FIG. 4 shows the cross section of the rotor blade profile 2 of a further exemplary embodiment of a device according to the invention
  • Rotor blade 1 The rotor blade profile 2 also consists of two half-shells 8a and 8b, which in the region of
  • Rotor profile nose 2a and are connected to each other in the region of the rotor profile 2 b. Further, two longitudinally extending webs 16 are provided, which support the half-shells 8a and 8b and can absorb transverse forces.
  • the upper and lower straps 2 c and 2 d are between the webs 16 arranged and have according to the invention steel inserts 4, which are not shown in Fig. 4, however.
  • the rotor blade profile nose 2a, the rotor blade profile 2b and, in principle, the webs 16 may also have steel insert parts 4, which have the rigidity properties of the

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

L'invention concerne une pale de rotor (1) pour une éolienne, comprenant une racine (2) de pale de rotor et un profil (3) de pale de rotor. L'objectif de l'invention, consistant à mettre à disposition une pale de rotor qui peut aussi être fabriquée en grandes longueurs de manière simple et bon marché et permet en outre une intégration simplifiée d'un système de protection contre la foudre est résolu pour une pale de rotor de type générique du fait que la pale de rotor est constituée au moins en partie d'une matière plastique composite renforcée par des fibres, des inserts métalliques (4) étant incorporés dans la matrice de cette matière plastique composite.
EP11716549A 2010-05-21 2011-04-27 Pale de rotor d'une éolienne Withdrawn EP2572103A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010017062.3A DE102010017062B4 (de) 2010-05-21 2010-05-21 Rotorblatt einer Windkraftanlage
PCT/EP2011/056643 WO2011144428A1 (fr) 2010-05-21 2011-04-27 Pale de rotor d'une éolienne

Publications (1)

Publication Number Publication Date
EP2572103A1 true EP2572103A1 (fr) 2013-03-27

Family

ID=44305025

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11716549A Withdrawn EP2572103A1 (fr) 2010-05-21 2011-04-27 Pale de rotor d'une éolienne

Country Status (5)

Country Link
US (1) US8807952B2 (fr)
EP (1) EP2572103A1 (fr)
CN (1) CN102906417B (fr)
DE (1) DE102010017062B4 (fr)
WO (1) WO2011144428A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2511477B1 (fr) 2011-04-11 2014-06-04 LM WP Patent Holding A/S Pale d'éolienne dotée d'une région de transition
CN102434407B (zh) * 2011-12-06 2013-11-06 连云港中复连众复合材料集团有限公司 一种兆瓦级风力发电机叶片铜盘式接闪器的安装方法
US9393745B2 (en) * 2012-05-15 2016-07-19 Hexcel Corporation Over-molding of load-bearing composite structures
EP2675030B1 (fr) 2012-06-13 2017-03-01 Nordex Energy GmbH Composant de structure pour une pale de rotor d'éolienne avec un conducteur de paratonnerre
GB2521809A (en) * 2013-10-17 2015-07-08 Vestas Wind Sys As Improvements relating to lightning protection systems for wind turbine blades
GB2519333A (en) * 2013-10-17 2015-04-22 Vestas Wind Sys As Improvements relating to lightning protection systems for wind turbine blades
GB2519331A (en) * 2013-10-17 2015-04-22 Vestas Wind Sys As Improvements relating to lightning protection systems for wind turbine blades
GB2519332A (en) 2013-10-17 2015-04-22 Vestas Wind Sys As Improvements relating to lightning protection systems for wind turbine blades
EP2927481B1 (fr) * 2014-03-31 2021-09-22 Siemens Gamesa Renewable Energy A/S Pale de rotor pour éolienne
US20160177918A1 (en) * 2014-12-18 2016-06-23 General Electric Company Wind turbine rotor blades with support flanges
US9970304B2 (en) 2015-07-22 2018-05-15 General Electric Company Rotor blade root assembly for a wind turbine
US10060411B2 (en) 2015-07-22 2018-08-28 General Electric Company Rotor blade root assembly for a wind turbine
US10519927B2 (en) * 2017-02-20 2019-12-31 General Electric Company Shear web for a wind turbine rotor blade

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE102006022272A1 (de) * 2006-05-11 2007-11-15 Repower Systems Ag Rotorblattanschluss

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US4976587A (en) * 1988-07-20 1990-12-11 Dwr Wind Technologies Inc. Composite wind turbine rotor blade and method for making same
DK9400343U4 (da) * 1994-09-07 1995-10-13 Bonus Energy As Lynsikring af vindmøllevinge
CN1975152B (zh) * 2001-07-19 2012-03-21 维斯塔斯风力系统集团公司 风力涡轮机叶片
DE10214340C1 (de) * 2002-03-28 2003-11-27 Aerodyn Eng Gmbh Blattanschluß für die Rotorblätter einer Windenergieanlage und Verfahren zu dessen Herstellung
DE10300284A1 (de) * 2003-01-02 2004-07-15 Aloys Wobben Rotorblatt für eine Windenergieanlage
EP1826402B1 (fr) * 2004-11-11 2016-08-24 Gamesa Innovation & Technology, S.L. Systeme paratonnerre pour pale d'aerogenerateur constituee de lamines de fibre de carbone
US20070251090A1 (en) * 2006-04-28 2007-11-01 General Electric Company Methods and apparatus for fabricating blades
DE102007036917A1 (de) 2007-08-06 2009-02-12 Hafner, Edzard, Prof. Dr.-Ing. Rotorblatt für Windkraftanlagen, insbesondere für schwimmende Windkraftanlagen, sowie Windkraftanlage mit einem Rotorblatt
US8337163B2 (en) * 2007-12-05 2012-12-25 General Electric Company Fiber composite half-product with integrated elements, manufacturing method therefor and use thereof
EP2153964A1 (fr) * 2008-08-14 2010-02-17 Lm Glasfiber A/S Procédé de fabrication d'une pale d'éolienne comportant un matériel de matrice renforcé par un câble d'acier
GB2465167A (en) * 2008-11-07 2010-05-12 Vestas Wind Sys As A turbine blade having mounting inserts of different lengths

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006022272A1 (de) * 2006-05-11 2007-11-15 Repower Systems Ag Rotorblattanschluss

Also Published As

Publication number Publication date
WO2011144428A9 (fr) 2012-04-26
US20130078105A1 (en) 2013-03-28
CN102906417A (zh) 2013-01-30
CN102906417B (zh) 2017-03-22
US8807952B2 (en) 2014-08-19
DE102010017062A1 (de) 2011-11-24
DE102010017062B4 (de) 2019-07-11
WO2011144428A1 (fr) 2011-11-24

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Inventor name: FLOETH, THOMAS

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Inventor name: DREWES, STEPHAN

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