WO2009135564A2 - Pale de rotor pour éolienne - Google Patents

Pale de rotor pour éolienne Download PDF

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Publication number
WO2009135564A2
WO2009135564A2 PCT/EP2009/002062 EP2009002062W WO2009135564A2 WO 2009135564 A2 WO2009135564 A2 WO 2009135564A2 EP 2009002062 W EP2009002062 W EP 2009002062W WO 2009135564 A2 WO2009135564 A2 WO 2009135564A2
Authority
WO
WIPO (PCT)
Prior art keywords
rotor blade
web
shell
blade according
shell half
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.)
Ceased
Application number
PCT/EP2009/002062
Other languages
German (de)
English (en)
Other versions
WO2009135564A3 (fr
Inventor
Lutz Gau
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.)
Nordex Energy SE and Co KG
Original Assignee
Nordex Energy SE and Co KG
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 Nordex Energy SE and Co KG filed Critical Nordex Energy SE and Co KG
Publication of WO2009135564A2 publication Critical patent/WO2009135564A2/fr
Publication of WO2009135564A3 publication Critical patent/WO2009135564A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • F05B2230/00—Manufacture
    • F05B2230/20—Manufacture essentially without removing material
    • F05B2230/23—Manufacture essentially without removing material by permanently joining parts together
    • 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
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05B2240/301—Cross-section characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/36—Retaining components in desired mutual position by a form fit connection, e.g. by interlocking
    • 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

Definitions

  • the present invention relates to a rotor blade for a wind turbine.
  • the rotor blade consists of two shell halves extending over the longitudinal direction of the rotor blade from a blade root to a blade tip and interconnected along their circumference.
  • the pressure-side and suction-side shell halves are used.
  • Between the shell halves at least one web device is arranged, which is connected to the shell halves, wherein the web device extends substantially in the longitudinal direction of the rotor blade.
  • DE 30 14 347 A1 discloses a process for the production of foam-core-supported shaped bodies such as blades, rotor blades and the like.
  • a foam core is introduced into each shell half, the separation plane is revised and bonded to the parting plane of the corresponding shell half.
  • This bonding is a so-called blind bonding, since this can no longer be viewed during and after their preparation.
  • Blind adhesives generally have the disadvantage that they can not be visually inspected, whether they have developed the desired adhesive effect. Also can not be determined in Blindverklebitch whether the entire intended area has been glued.
  • the use of the foam cores has the disadvantage that a large-area bonding of these has to be done.
  • the use of the foam core increases disproportionate the weight of the rotor blade, especially in rotor blades with a large blade length.
  • a large aerodynamic wing which has two parallel to each other, extending in the longitudinal direction of the rotor blade spars.
  • the spar is prefabricated from three components, wherein first a wing profile middle part is installed in an upwardly open mold in a shell half. In this, a two-part foam web unit is glued, which supports the respective main belt pressure side and suction side of the rotor blade. The massive expansion of the foam elements creates weight problems for the rotor blade.
  • a wind turbine rotor blade is known, whose base body consists of reinforced concrete composite material.
  • the rotor blade has an inner spar extending longitudinally of the member which is monolithically molded with the concrete composite forming the aerodynamic surface.
  • a rotor blade for a wind energy plant is known.
  • the rotor blade has two shell halves, in which a likewise mounted from two halves, box-shaped support unit is arranged, at which later an aerodynamic shell of the rotor blade is attached.
  • the forces are essentially absorbed by the box-shaped support unit.
  • the box-shaped support unit which acts as a spar in the rotor blade, consists of two U-shaped profiles, which face each other with their open side.
  • the cross strut of the U-shaped profile is large with the Cup half and the free ends of the legs of the U-shaped profile are glued together.
  • a disadvantage of this construction is that the box-shaped spar is glued over a large area with the shell half, which is technically problematic production, especially since at the same time the spar height must be adjusted in advance to the clear height of the shell element.
  • the invention has for its object to provide a rotor blade for a wind turbine, which allows the production of a production-safe rotor blade as possible with simple means.
  • the rotor blade according to the invention has two shell halves, which extend over the longitudinal direction of the rotor blade from a blade root to the blade tip.
  • the shell halves are interconnected along their circumference.
  • Between the shell halves at least one web device is arranged, which is connected to both shell halves.
  • Each web device has two web elements, each having two free web legs and at least one transverse connection between the free web legs.
  • the web device preferably extends in the interior of the longitudinal direction of the rotor blade. According to the invention, the ends of the free web legs of a web element are connected to exactly one shell half. About the cross connections are connected to the shell half Bar elements connected together.
  • a particular advantage of the staging device according to the invention is that the connections between the staging device and the shell half which are critical for the strength of the rotor blade are much easier to inspect.
  • the connection of the individual web elements with the shell halves can be taken without much effort in inspection.
  • the web elements absorb the forces acting on the rotor blade shear forces.
  • the connection between the cross connections of the web elements is comparatively uncritical in the web device according to the invention, since this bonding mostly takes place in the vicinity of the so-called neutral fiber and is therefore subject to little stress.
  • a height adjustment of the cross-connection of the web elements on the sheet separation plane is particularly advantageous to the rotor blade according to the invention.
  • the web elements have a U-shape.
  • the legs of the web elements can run parallel or enclose an angle with each other.
  • the web legs can be equipped at their ends in each case with a connecting flange.
  • the connecting flange can protrude from the web leg on one side or extend from the web leg in several directions.
  • the shell halves each have a circumferential attachment surface for connection to the other shell half.
  • the upper side of the stanchion member connected to the shell half lies in a plane which is spanned by the attachment surface of the shell half. In this way it is ensured that when assembling the shell halves, both the attachment surfaces of the shell halves with each other and the tops of the web elements can come into contact with each other.
  • each of the shell halves carries at least one main belt which extends in the longitudinal direction of the rotor blade.
  • the webs absorb the thrust forces, while the longitudinal forces, for example the centrifugal forces caused by the rotation of the rotor blade, are absorbed by the main straps.
  • the bending forces are absorbed by the combination of main straps and webs in the rotor blade according to the invention.
  • the web elements on the main straps which are constructive part of the shell half, with the shell halves.
  • the web elements according to the invention are therefore not directly connected to the aerodynamic shells of the shell halves, but are attached to the main straps, which in turn are part of the shell halves.
  • the web elements are glued to the shell half. This means that when the web elements are connected to the shell halves via the main straps, then the web elements are glued to the main straps.
  • the main straps run between or next to the web elements, then the web elements can also be glued directly to the shell half or to an adapter provided on the shell half.
  • the cross connections of the web elements are glued together. While the bonding of the cross connections is inevitably a Blindverklebung, but this is charged by their proximity to the so-called neutral fiber only relatively low.
  • gluing the cross connections it is also possible to connect these directly or via additional means positively with each other. In particular, can be achieved by a suitable shaping of the connecting surfaces, a self-centering and / or a self-positioning of the shell halves.
  • FIG. 1a to e the construction of a rotor blade according to the invention in cross section
  • Fig. 2a to e the structure of a conventional rotor blade with webs
  • Figure 2 shows the conventional structure of a rotor blade with webs.
  • FIG. 2a shows the suction-side shell half 10 with the main belt 12 extending in the longitudinal direction. Furthermore, fastening surfaces 14 which serve to connect the shell halves to one another and run around the shell half 10 are shown in FIG.
  • Figures 1 and 2 show the shell halves only in a schematic view in which for better clarity, the profile shape of the shell halves is shown in each case oval and the attachment surfaces 14 are indicated as outwardly projecting surfaces.
  • the shape of the rotor blade varies in the longitudinal direction and is predominantly not symmetrical or oval.
  • the attachment surfaces 14 are not formed in a real rotor blade as protruding surfaces, but adapted to the contour of the rotor blade.
  • Figure 2e shows the finished mounted rotor blade, with its suction-side shell half 10 and its pressure-side shell half 11. Between the main straps 12 and 18, a web composite 22a, 22b is glued. The web compound 22a, 22b thus directly connects the respective opposite main straps 12 and 18 of the two shell halves.
  • FIG. 2 b a first web profile 22 a is glued to the belt 18 in the pressure-side shell half 11. During bonding, the web profile 22a is held in position via a lateral support 24 until the adhesive has cured.
  • Figure 2c two spacers 28 are attached to the first web profile 22a. The spacers 28 hold in a subsequent step, the second web profile 22 b in position while it is bonded to the main belt 18. When the adhesive bond between the main belt 18 and the second web profile 22b has cured, the spacers 28 between the first and second web profiles 22a, 22b are removed.
  • the suction-side shell half 10 is bonded to the region of its attachment surface 14 and to the free ends of the web assembly 22a, 22b.
  • a disadvantage of this approach is that the bonding of the web profiles 22a and 22b can not be controlled with the suction-side shell half, so that a faulty or incomplete bonding not recognized and thus can not be improved or otherwise compensated.
  • FIG. 1e shows the structure of a rotor blade according to the invention, wherein for ease of orientation the same parts are provided with the same reference numerals as in Figures 2.
  • Figure Ie shows the shell halves 10 and 11, which are glued together along their attachment surfaces 14. The attachment surfaces 14 form a parting plane 24, which is shown in dashed lines in Figure 1. Between the shell halves 10 and 11, a web device 26 is shown. The web device in its finished form has an H-shape. The web device is connected in 4 points 28, 30, 32 and 34 via the straps with the shell halves.
  • the staging device 26 consists of two web elements 36, 38, which in each case have a U-shape have.
  • Each web element 36, 38 has two parallel or approximately parallel web legs 40, 42, each of which is provided with an outwardly projecting connecting flange 44 (see Fig. Ib). Between the web legs 40 and 42 extends the cross-connection 46. As can be seen in Figure Ib, the top of the cross-connection 46 extends in the parting plane 24th
  • the web element 36 is first glued into the suction-side shell half on the suction-side main belt 12 in separate working steps.
  • a separate step which can be performed before, simultaneously or subsequently, the second web member 38 is glued into the pressure-side shell half 11.
  • bonding takes place with the pressure-side main belt 18.
  • the particular advantage of this procedure is that the web elements 36 and 38 can be controlled during their bonding with the shell halves 10, 11. The required in the previous process holding device for the bridge installation is eliminated. Only a position aid is needed.
  • the shell halves 10 and 11 are glued together along their joining surfaces 14.
  • the cross connections 46 of the web elements are glued together. This connection between the web elements is the only blind bonding to the rotor blade.
  • the advantage is that the blind bonding between the cross connections is only of secondary importance for the stability of the rotor blade.

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 destinée à une éolienne. Cette pale comprend deux demi-coques qui s'étendent du pied de pale au bout de pale dans la direction longitudinale de la pale et sont assemblées le long de leur périphérie, ainsi qu'au moins un dispositif de liaison disposé entre les demi-coques et relié à celles-ci, ce système de liaison présentant deux éléments de liaison comportant chacun deux branches de liaison et une traverse reliant ces deux branches de liaison. Selon l'invention, sur chaque élément de liaison, les extrémités des branches de liaison sont reliées à une demi-coque correspondante et les traverses des éléments de liaison sont reliées entre elles.
PCT/EP2009/002062 2008-05-07 2009-03-20 Pale de rotor pour éolienne Ceased WO2009135564A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008022548A DE102008022548A1 (de) 2008-05-07 2008-05-07 Rotorblatt für eine Windenergieanlage
DE102008022548.7 2008-05-07

Publications (2)

Publication Number Publication Date
WO2009135564A2 true WO2009135564A2 (fr) 2009-11-12
WO2009135564A3 WO2009135564A3 (fr) 2010-05-06

Family

ID=41152581

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/002062 Ceased WO2009135564A2 (fr) 2008-05-07 2009-03-20 Pale de rotor pour éolienne

Country Status (2)

Country Link
DE (1) DE102008022548A1 (fr)
WO (1) WO2009135564A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102297075A (zh) * 2010-06-25 2011-12-28 通用电气公司 具有改进的连结线的风力涡轮机叶片
WO2015003717A1 (fr) * 2013-07-11 2015-01-15 Vestas Wind Systems A/S Pales d'éolienne
US20220203627A1 (en) * 2020-12-28 2022-06-30 Lm Wind Power A/S Distance member for connecting wind turbine blade shear webs

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010002720A1 (de) 2010-03-10 2011-09-15 Aloys Wobben Windenergieanlagen-Rotorblatt
IT1401996B1 (it) * 2010-09-30 2013-08-28 Wilic Sarl Metodo per realizzare un longherone tubolare di una pala di una turbina eolica
US8257048B2 (en) * 2011-07-19 2012-09-04 General Electric Company Wind turbine blade multi-component shear web with intermediate connection assembly
DE102011080869A1 (de) * 2011-08-12 2013-02-14 Repower Systems Se Verfahren zum Herstellen eines Rotorblatts einer Windenergieanlage, Stegpaket, Rotorblatt und Windenergieanlage
WO2017045690A1 (fr) 2015-09-15 2017-03-23 Vestas Wind Systems A/S Procédé et appareil de fabrication de pale d'éolienne
JP6672233B2 (ja) 2017-09-25 2020-03-25 三菱重工業株式会社 複合材翼の成形方法、複合材翼及び複合材翼の成形型
CN109281806A (zh) * 2018-09-25 2019-01-29 株洲时代新材料科技股份有限公司 一种风电叶片结构及其制备方法
CN109441712B (zh) * 2018-10-29 2020-04-10 株洲时代新材料科技股份有限公司 一种预埋型风电叶片叶根端面褶皱的控制方法

Family Cites Families (5)

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Publication number Priority date Publication date Assignee Title
DE3014347C2 (de) 1980-04-15 1983-05-26 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Verfahren zur Herstellung von schaumkerngestützen, faserverstärkten Kunststoff-Formkörpern wie Flügel, Rotorblätter etc. großer Längen-und Breitenausdehnung
DE3113079C2 (de) 1981-04-01 1985-11-21 Messerschmitt-Bölkow-Blohm GmbH, 8000 München Aerodynamischer Groß-Flügel und Verfahren zu dessen Herstellung
DK387882A (da) 1982-02-01 1983-08-02 Stanford Res Inst Int Vindturbinerotorblad samt fremgangsmaade til fremstilling af samme
DK175718B1 (da) * 2002-04-15 2005-02-07 Ssp Technology As Möllevinge
US8485786B2 (en) * 2007-01-16 2013-07-16 Bladena Aps Reinforced blade for wind turbine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102297075A (zh) * 2010-06-25 2011-12-28 通用电气公司 具有改进的连结线的风力涡轮机叶片
WO2015003717A1 (fr) * 2013-07-11 2015-01-15 Vestas Wind Systems A/S Pales d'éolienne
US20220203627A1 (en) * 2020-12-28 2022-06-30 Lm Wind Power A/S Distance member for connecting wind turbine blade shear webs
US11667087B2 (en) * 2020-12-28 2023-06-06 Lm Wind Power A/S Distance member for connecting wind turbine blade shear webs

Also Published As

Publication number Publication date
DE102008022548A1 (de) 2009-11-12
WO2009135564A3 (fr) 2010-05-06

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