WO2017148669A1 - Dentelures à rainures de décharge - Google Patents

Dentelures à rainures de décharge Download PDF

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Publication number
WO2017148669A1
WO2017148669A1 PCT/EP2017/052831 EP2017052831W WO2017148669A1 WO 2017148669 A1 WO2017148669 A1 WO 2017148669A1 EP 2017052831 W EP2017052831 W EP 2017052831W WO 2017148669 A1 WO2017148669 A1 WO 2017148669A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor blade
serrations
slot
notch
notch base
Prior art date
Application number
PCT/EP2017/052831
Other languages
German (de)
English (en)
Inventor
Lenz Zeller
Enno Eyb
Original Assignee
Senvion Gmbh
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 Senvion Gmbh filed Critical Senvion Gmbh
Priority to EP17703997.1A priority Critical patent/EP3423705A1/fr
Publication of WO2017148669A1 publication Critical patent/WO2017148669A1/fr

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
    • 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
    • F05B2240/31—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape
    • F05B2240/311—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor of changeable form or shape flexible or elastic
    • 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
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/11—Geometry two-dimensional triangular
    • 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
    • F05B2250/00—Geometry
    • F05B2250/10—Geometry two-dimensional
    • F05B2250/14—Geometry two-dimensional elliptical
    • F05B2250/141—Geometry two-dimensional elliptical circular
    • 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
    • F05B2260/00—Function
    • F05B2260/90—Braking
    • F05B2260/902—Braking using frictional mechanical forces
    • 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
    • F05B2260/00—Function
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • F05B2260/962—Preventing, counteracting or reducing vibration or noise by means creating "anti-noise"
    • 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 according to the preamble of claim 1.
  • rotor blades are well known in the art.
  • the rotor blades discussed here are intended in particular for mounting on wind turbines.
  • Modern wind turbines may have rotor blades with lengths up to 80 or even more meters, so that the rotational speeds of the rotor blades can be very large, especially in the tip of the rotor blades. There may be disturbing noise.
  • the relative wind impinging on the rotor blade trailing edge in the form of the serrations is still perpendicular to the serration, but the eddies formed by the serrations are not all formed parallel next to each other along the rotor blade trailing edge, but along the trailing edge formed by the serrations be formed angled arranged to each other.
  • the vertebrae partially lift and cause a significantly reduced noise.
  • EP 2 631 467 A1 discloses a rotor blade with two serration components which are connected to one another in a noise-saving manner by means of a stepped rebate.
  • WO 2015/091797 A1 discloses a rotor blade with a trailing edge on which serrations are arranged, which are designed to be foldable. The movable arrangement of the serrations at the trailing edge is intended to prevent a stall.
  • Serrations are disclosed, which are arranged in two layers one above the other and are displaceable relative to each other and can be fixed in the shifted position on the rotor blade.
  • US 201 1/0142635 A1 there is disclosed a rotor blade having a serration member which may have notches opposite the apex of a serration extending from the leading edge of the serration member via a fastening strip.
  • the object is achieved by an initially mentioned rotor blade with the characterizing features of claim 1.
  • the rotor blade according to the invention is intended in particular for mounting on the rotor of a wind energy plant.
  • the rotor blade has serrations arranged along a trailing edge which protrude from the trailing edge.
  • the serrations are preferably in extension of and in alignment with the rotor blade outer skin of the rotor blade trailing edge.
  • a notch is provided with a notch root, and the notch has an extension along a blade width and an extension along a blade length.
  • the serrations can be structurally identical to one another or can be constructed identically in groups or else in pairs differently from one another.
  • the serrations are in a plan view of the suction side and / or the Pressure side of the rotor blade triangular shaped.
  • the triangle can be made isosceles. It is also conceivable that the two triangle sides have different lengths. They are preferably formed straight, but may also be formed arcuate or jagged.
  • the serrations are formed wider along a width of the rotor blade than along a longitudinal direction of the rotor blade. Ie. the width of the serrations is preferably greater than the length. A height of the serrations perpendicular to the width and the length is many times smaller than the other two dimensions.
  • the width may be 5 cm to 30 cm and take any intermediate value, the length may be 2 cm to 1 5 cm and also accept any intermediate value.
  • the serrations preferably form a serrated trailing edge of the rotor blade.
  • a notch with a notch root is disposed between adjacent serrations, and the notch also has an extension along a blade width and an extension along a blade length.
  • the relative wind directed approximately perpendicularly to the trailing edge and also to the serration generates at the rotor blade edge usually arranged parallel to each other vortex, which cause disturbing noises.
  • the Serrations the arrangement of the vertebrae is changed to each other, whereby the noise is basically reduced.
  • the material at the notch base is exposed to alternating voltages and high voltage maxima. This fatigues the material at the notch bottom faster than the rest of the material of the serrations and it can come to propagating cracking, starting from the notch base in the material. It has been shown that the noise is particularly low when the notch is particularly pointed and narrow. However, this disadvantageously has the consequence that particularly high stress maxima occur at the notch base, which can lead to material fatigue and cracking between the serrations.
  • at least one relief slot is provided, which extends along the rotor blade longitudinal direction and is arranged at one of the notch bases.
  • the invention provides here, the tensile loads and in particular maxima of the tensile loads in the material in which the Serrations and notches are formed to reduce significantly by the discharge slots.
  • the relief slots are preferably arranged where the highest stress maxima occur in the material, thus expediently in the region of the notch base.
  • the relief slots are to be understood as conventional slots having a slot width and a slot length, wherein the slot length is significantly greater than the slot width and the slot length extends predominantly in the longitudinal direction of the rotor blade.
  • portions of the longitudinal extent of the relief slot may also run along the width of the rotor blade.
  • the discharge slot is assigned to one of the notch bases and expediently the discharge slot is connected by a connecting slot with the notch base assigned to it.
  • the notch on the notch base goes open into the connection slot and the connection slot closes open to the discharge slot.
  • two cheeks are formed in the material at the notch base, which are moved relative to each other at stresses in the material and thereby reduce stresses, in particular stress maxima in the material around the notch base.
  • the cheeks are expediently formed by the described construction of relief slot and connecting slot.
  • Relief slot and connection slot are preferably designed approximately T-shaped with hanging T-arms.
  • each discharge slot is arranged on each of the notch bases, this makes it possible to relieve each notch base against stress maxima, the discharge slots can all be of the same shape or also formed differently from one another. However, it is particularly preferred to form the relief slots the same, which of course is simpler in terms of production technology and leads to lower production costs.
  • the relief slot is bent arcuately to the notch base, spaced from the notch base and formed to extend around the notch base.
  • the discharge slot is formed quarter-arc-shaped and arranged symmetrically about an angle bisector of the notch. It has been found to be particularly preferred that ends of the quarter-arc-shaped relief slot are arranged such that tangents directly at the two ends of the arcuate relief slot each form a 45 ° angle to the longitudinal direction of the rotor blade. However, the tangents can also be arranged at an angle of 45 ° ⁇ 10 °, preferably 45 ° ⁇ 5 °.
  • the serrations are preferably arranged on attachment strips. They may be integrally molded there or subsequently glued or otherwise secured to the fastening strips.
  • a plurality of serrations is expediently arranged on the fastening strip.
  • the fastening strip and the serrations arranged on it form a serration component.
  • the serration component can be formed in one piece, for example in a lamination process. It may be a fiber composite component.
  • the Serrations component may also be an injection molded part. Injection molding components are inexpensive to produce, especially in larger quantities.
  • the fastening strip expediently has a length, a width and a thickness. The serrations protrude from an outer longitudinal edge and the fastening strip is glued to the rotor blade outer skin with an adhesive layer.
  • the material in which the notches and the notch bases are formed is therefore expediently likewise a fiber composite material, such as, for example, a laminate.
  • the fiber composite material the tensile stresses and their maxima are formed, which are reduced by the discharge slots.
  • a plurality of serration components are arranged along the rotor blade trailing edge, preferably they are all arranged in the tip section, because the greatest noise load is generated by the tip section.
  • the Serrations- components may be identical or at least be identical in groups.
  • the relief slots are desirably formed to extend along the entire thickness of the fastening strip.
  • the fastening strip preferably has a different thickness over the width, so the fastening strip is on its trailing edge thicker than at its leading edge; the thickness is a few millimeters, preferably about 3 mm.
  • the fastening strip is glued to the outer skin of the rotor blade with an approximately 1 -3 mm thick adhesive layer or a 1 mm thick adhesive tape, preferably the relief slots pierce the fastening strip along the thickness completely, so that the Switzerlandwoodsmaxima can be minimized over the entire thickness.
  • the serrations on the attachment strips are formed as serration components, i. H. a certain number of serrations are produced on a fastening component in preferably a lamination process or otherwise and provided as a preferably one-piece component, however, other production methods can also be selected; the serration components can then be placed next to one another, preferably in a form-fitting manner along a conventional rotor blade trailing edge Exterior skin of the preferably pressure side rotor blade half shell are glued.
  • the Serration components are glued with their respective mounting strip on the rotor blade half shell, while the serrations themselves, so the tips, project beyond the previous rotor blade trailing edge of the rotor blade.
  • the relief slots are completely closed by gluing on the rotor blade outer skin of the rotor blade outer skin.
  • the relief slots for each of the notched bases are formed in two parts, it may be appropriate to provide two relief slot sections opposite one another at each notch base, so that the notch base with the two relief slot sections has an approximately T-shaped form.
  • the relief slots may also have a connection to the notch base.
  • the discharge slots have no open connection to the notch base, but are spaced therefrom.
  • the relief slots are then bent arcuate towards the notch base out, but it can also relief slots, which are predominantly, at least partially rectilinear, are used.
  • the relief slots may also have a different relief slot width along their relief slot length.
  • the relief slots along the rotor blade trailing edge are all formed the same, but it may also be possible that the relief slots are smaller dimensioned towards the tip of the rotor blade as the relief slots to the rotor blade root, in particular, the serrations can have a greater width to the rotor blade root as to Rotor blade tip, and wider Serrations correspond preferably with longer relief slots, in particular with relief slots, which have a larger opening cross-section.
  • FIG. 1 is a plan view of a tip section of a rotor blade according to the invention
  • FIG. 2 is a partial view B in FIG. 1, FIG.
  • FIG. 3 is a sectional view taken along the line III-III in Fig. 1,
  • Fig. 4 is a schematic representation of the invention Serration component.
  • FIG. 1 shows a tip section of a rotor blade 1 according to the invention.
  • 1 represents a quarter of the extent in the longitudinal direction L of the rotor blade 1.
  • the rotor blade 1 has a front edge 2, which is shown in Fig. 1 below and a trailing edge 3, which is shown in Fig. 1 above.
  • Serrations 4 are arranged side by side.
  • a direct tip section 5 and the tip 6 of the rotor blade 1 has no serrations 4 at the trailing edge 3, while the rest of the tip section except for the immediate tip section 5 itself Serrations 4 different extent along a width of the rotor blade 1, that is, having different extension perpendicularly projecting from the rotor blade trailing edge 3.
  • the rotor blade 1 comprises two rotor blade half-shells, in which Fig. 1 is a plan view of a pressure-side rotor blade half shell is shown.
  • the serrations 4 are parts of serration components 7 which comprise a fastening strip 8 from which the serrations 4 depart.
  • the fastening strip 8 and the serrations 4 can be formed in one piece, the serration components 7 can be produced as laminate components.
  • the rotor blade half shells are also manufactured in a lamination process.
  • first several layers of natural or synthetic fabric, carbon fiber fabric, balsa wood or the like in a mold half shell placed on each other or side by side, also foam layers and the like can be used, all of which are layered in a predetermined manner side by side and one above the other and form a semi-finished product.
  • the semifinished product is first formed in the mold half shell, then the semifinished product is sealed internally with a vacuum film, d. H. a vacuum film is placed inside the semifinished product and the vacuum film is sealed at the edges of the mold half shell, then a resin system is infused into the semifinished product via supply and discharge lines in the mold half shell and / or in the vacuum film, with first air and after impregnation of the semifinished product the resin system, the still liquid resin system is sucked out through discharge lines from the semifinished product. The liquid resin system is introduced into the semifinished product via supply lines.
  • the curing process of the preferably two-component resin system starts in the form of an exothermic reaction, thereby generating heat.
  • the exothermic peak passed during the curing reaction may well have temperatures well above 100 ° C.
  • the rotor blade trailing edge 3 has a pressure-side rotor blade half shell and a suction-side rotor blade half shell.
  • FIG. 3 the pressure-side rotor blade half-shell 30 is shown at the top, while the suction-side rotor blade half shell 31 is shown below.
  • An adhesive line 32 between the two rotor half shells 30, 31 is shown in FIG.
  • the serration components 7 are glued to the outer skin of the pressure-side rotor blade half shell 30 by means of an adhesive layer 33.
  • the fastening strips 8 of the Serration components 7 are glued to the outer skin by means of an approximately 1 mm thick and 9 mm wide adhesive tape, the serrations are perpendicular to the longitudinal direction L of the rotor blade 1 from.
  • the serration component 7 is slightly angled in cross section according to FIG. H. between the fastening strip 8 and the serrations 4, a small angle of 3 ° to 5 ° is provided along the width B of the Serration component 7.
  • Fig. 3 also shows that the fastening strip 8 is rounded or flattened along its longitudinal edge in the direction of the rotor blade leading edge 2, in order not to form sharp edges for vortex formation.
  • FIG. 2 shows the detail B in FIG. 1.
  • two serration components 7 are joined to one another in a form-fitting manner, and the serrations 4 are guided through the two serration components 7 along the rotor blade trailing edge 3.
  • 2 shows the serration components 7 of medium width, narrower serration components 7 are provided directly adjacent to the tip 6, while wider serration components 7 are used in the area towards the rotor blade root.
  • the fastening strips are formed in the same width along the width B and length in the longitudinal direction L and at a constant height H, while the extent of the serrations 4 along the width B differ from each other.
  • serrations 4 of different serration components 7 have a different extent into the broad B.
  • FIG. 2 shows the arrangement of the serrations 4 along the serration component 7 as a uniformly jagged outline, which point towards the rotor blade trailing edge 3
  • Indentations are also referred to herein as notches 20 and the innermost point of the notches 20 is the notch base 21.
  • the notch base 21 is not exactly acute-angled, but slightly rounded.
  • the notches 20 each have an opening angle of about 30 °.
  • Each notch base 21 around relief lugs 34 are performed, which have a distance of about 1 cm - 2 cm from its associated Kerbground 21.
  • Each notch base 21 is associated with exactly one discharge slot 34.
  • Each relief slot 34 is formed almost quarter-circular.
  • Each of the relief slots is connected by means of a suitably over its entire length connecting slot 35 with the associated Kerbground 21.
  • the connecting slot 35 may also be formed arcuate or angled.
  • the arrangement of a relief slot with the connecting slot 35 is formed in some T-shape with slightly hanging T-arms, the T in Fig. 2 is upside down. But there are also other forms such as with upstanding T-arms conceivable.
  • the relief slot with connecting slot 35 two opposing cheeks are formed, which extend along the height H over the entire material at the notch base 21.
  • the relief slots 34 and the connecting slots 35 extend along the height H through the entire material and are open to the suction and the pressure side of the rotor blade.
  • the connection slots connect the associated notch base 21 open with the associated relief slot 34.
  • Each of the relief slots 34 reduces the tensile stress maxima occurring at the associated notch base 21 significantly.
  • the wind forces acting on the serrations 4, in particular on the serration peaks, during the operation of the rotor blade generate tensile stresses on the notch base 21, which stress the material heavily and lead to fatigue fractures due to the occurring load changes.
  • the relief slots the number of possible load changes is significantly increased and thus significantly increases the service life of the Serration- components.
  • FIG. 4 shows a basic illustration of the serration component 7 according to the invention with serations 4 of equal width and equal length, in which case the width is greater than the length of each individual serration 4.
  • the serrations 4 are integrally formed on the fastening strip 8.
  • a Serration component 7 as a one-piece fiber composite component getting produced.
  • 4 of the serrations 4 are all equally far from the rotor leading edge 2 facing the longitudinal edge of the fastening strip 8 and the notch bases 21 are also all equally far embedded in the mounting strip 8.
  • the connecting lines between the Serrationsspitzen 40 and the two adjacent Kerbgrounden 21 are linear.
  • the Serrations dictate 40 itself and the notch base 21 itself are slightly rounded.
  • a relief slot 34 is guided, the relief slot 34 is approximately quarter-arc-shaped and guided along an angle bisector of the associated notch 20 symmetrically about the associated notch base 21 around. It has been found that quarter-arc-shaped relief slots 34 are designed to be particularly favorable when tangents of the ends of the relief slots form an angle of 45 ° with respect to the longitudinal direction L.
  • the smallest distance of the relief slot 34 from the associated notch base 21 is 1 cm to 2 cm, but it is also possible distances of 2 cm to 3 cm and 3 cm to 4 cm.
  • the distance of the relief slot 34 from the associated notch base 21 also depends on the width and length of the serration 4; in particular, the relief slots 34 are guided at a greater distance from the notch base 21 with wider serrations 4.
  • the relief slots 21 are guided as shown in FIG. 3 through the entire thickness of the fastening strip 8, ie with disassembled fastening strip 8 can see through the relief slots 34 in Fig. 2.
  • the relief slots 34 are arranged on the fastening strip 8 such that when the serration components 7 are applied to the fastening strips 8 on the outer skin of the pressure-side rotor blade half shell 30 according to FIG. 3, the relief slots 34 are completely closed by the rotor blade outer skin.
  • the relief slots 34 can be closed with an elastic adhesive.
  • the elastic adhesive is aligned with an outside of the fastening strip 8, so that no sharp edges are formed for attacking the wind.
  • the Serrations 4 basically have the function to reduce the noise of the rotor blades 1 during operation. LIST OF REFERENCE NUMBERS

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  • 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) d'une éolienne, comportant des dentelures (4) placées le long d'un bord de fuite (3) et faisant saillie du bord de fuite (3) et, entre des dentelures adjacentes (4), une entaille (20) munie d'un fond (21), ladite entaille s'étendant le long d'une largeur de pale de rotor (B) et le long d'un sens longitudinal de pale de rotor (L). Selon l'invention, au moins une rainure de décharge (34) s'étend le long du sens longitudinal de pale de rotor (L) et est située au niveau de l'un des fonds d'entaille (21).
PCT/EP2017/052831 2016-02-29 2017-02-09 Dentelures à rainures de décharge WO2017148669A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17703997.1A EP3423705A1 (fr) 2016-02-29 2017-02-09 Dentelures à rainures de décharge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016002350.3 2016-02-29
DE102016002350.3A DE102016002350A1 (de) 2016-02-29 2016-02-29 Serrations mit Entlastungsschlitzen

Publications (1)

Publication Number Publication Date
WO2017148669A1 true WO2017148669A1 (fr) 2017-09-08

Family

ID=57995211

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/052831 WO2017148669A1 (fr) 2016-02-29 2017-02-09 Dentelures à rainures de décharge

Country Status (3)

Country Link
EP (1) EP3423705A1 (fr)
DE (1) DE102016002350A1 (fr)
WO (1) WO2017148669A1 (fr)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
EP3540212A1 (fr) 2018-03-16 2019-09-18 Nordex Energy GmbH Pièce rapportée pour une lame de rotor d'une éolienne
EP3690231A1 (fr) 2019-01-31 2020-08-05 Nordex Energy GmbH Élément de construction pour une pale de rotor d'éolienne, dispositif ainsi que pale de rotor d'éolienne
WO2024042116A1 (fr) 2022-08-25 2024-02-29 Nordex Energy Se & Co. Kg Pale de rotor pour une éolienne, et pointe de pale de rotor

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EP1338793A2 (fr) * 2002-02-22 2003-08-27 Mitsubishi Heavy Industries, Ltd. Bord de fuite cranelée pour pale d'éolienne
US20110142637A1 (en) * 2010-11-04 2011-06-16 General Electric Company Noise reducer for rotor blade in wind turbine
US20110142635A1 (en) 2010-08-23 2011-06-16 General Electric Company Blade extension for rotor blade in wind turbine
DE102011051329A1 (de) * 2010-06-24 2011-12-29 General Electric Company Befestigungseinrichtung für eine Rotorblattkomponente
EP2631467A1 (fr) 2012-02-24 2013-08-28 Siemens Aktiengesellschaft Agencement pour réduire le bruit initié par une pale d'éolienne
WO2014048437A1 (fr) 2012-09-25 2014-04-03 Vestas Wind Systems A/S Atténuateur de bruit pour une pale d'éolienne et procédé de réduction du bruit d'éolienne
WO2015091797A1 (fr) 2013-12-20 2015-06-25 Lm Wp Patent Holding A/S Pale d'eolienne comportant des dispositifs aerodynamiques deployables
US20150316029A1 (en) * 2012-12-07 2015-11-05 Wobben Properties Gmbh Rotor blade trailing edge

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US7976283B2 (en) * 2010-11-10 2011-07-12 General Electric Company Noise reducer for rotor blade in wind turbine
US20130280085A1 (en) * 2012-04-23 2013-10-24 General Electric Company Flow modification device for rotor blade in wind turbine

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Publication number Priority date Publication date Assignee Title
EP1338793A2 (fr) * 2002-02-22 2003-08-27 Mitsubishi Heavy Industries, Ltd. Bord de fuite cranelée pour pale d'éolienne
DE102011051329A1 (de) * 2010-06-24 2011-12-29 General Electric Company Befestigungseinrichtung für eine Rotorblattkomponente
US20110142635A1 (en) 2010-08-23 2011-06-16 General Electric Company Blade extension for rotor blade in wind turbine
US20110142637A1 (en) * 2010-11-04 2011-06-16 General Electric Company Noise reducer for rotor blade in wind turbine
EP2631467A1 (fr) 2012-02-24 2013-08-28 Siemens Aktiengesellschaft Agencement pour réduire le bruit initié par une pale d'éolienne
WO2014048437A1 (fr) 2012-09-25 2014-04-03 Vestas Wind Systems A/S Atténuateur de bruit pour une pale d'éolienne et procédé de réduction du bruit d'éolienne
US20150316029A1 (en) * 2012-12-07 2015-11-05 Wobben Properties Gmbh Rotor blade trailing edge
WO2015091797A1 (fr) 2013-12-20 2015-06-25 Lm Wp Patent Holding A/S Pale d'eolienne comportant des dispositifs aerodynamiques deployables

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3540212A1 (fr) 2018-03-16 2019-09-18 Nordex Energy GmbH Pièce rapportée pour une lame de rotor d'une éolienne
EP3690231A1 (fr) 2019-01-31 2020-08-05 Nordex Energy GmbH Élément de construction pour une pale de rotor d'éolienne, dispositif ainsi que pale de rotor d'éolienne
WO2024042116A1 (fr) 2022-08-25 2024-02-29 Nordex Energy Se & Co. Kg Pale de rotor pour une éolienne, et pointe de pale de rotor
DE102022121502A1 (de) 2022-08-25 2024-03-07 Nordex Energy Se & Co. Kg Rotorblatt für eine Windenergieanlage sowie Rotorblattspitze

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EP3423705A1 (fr) 2019-01-09

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