WO2018059763A1 - Capuchon de protection pour protéger un bord d'attaque d'une pale de rotor d'éolienne - Google Patents

Capuchon de protection pour protéger un bord d'attaque d'une pale de rotor d'éolienne Download PDF

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Publication number
WO2018059763A1
WO2018059763A1 PCT/EP2017/067485 EP2017067485W WO2018059763A1 WO 2018059763 A1 WO2018059763 A1 WO 2018059763A1 EP 2017067485 W EP2017067485 W EP 2017067485W WO 2018059763 A1 WO2018059763 A1 WO 2018059763A1
Authority
WO
WIPO (PCT)
Prior art keywords
protective cap
rotor blade
wind turbine
turbine rotor
leading edge
Prior art date
Application number
PCT/EP2017/067485
Other languages
English (en)
Inventor
Karsten Schibsbye
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2018059763A1 publication Critical patent/WO2018059763A1/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
    • 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 invention relates to a protective cap for protecting a leading edge of a wind turbine rotor blade from erosion and a method for mounting such a protective cap to a wind turbine rotor blade.
  • rotor or turbine blades e.g. blades of wind, gas or steam turbines are made of fibre reinforced plastic composite material. Erosion of the leading edge of such blades is known to occur in operation. Erosion of the leading edge of a tur- bine blade may reduce the efficiency of the blade and power output of the turbine.
  • Wind turbine rotor blades and in particular those of offshore wind turbines are specially affected by wear which occurs where interacting with particles or droplets result in de ⁇ grading of their leading edge. Erosion of the leading edge of wind turbine rotor blades by droplet impingement wear may re ⁇ cute blade aerodynamic efficiency and power output of the wind turbine.
  • EP2497943 Al discloses a wind turbine rotor blade with an im ⁇ proved surface, wherein a plastic tape is arranged at spe ⁇ cific locations of the blade to reinforce the blade surface. Such a plastic tape for erosion protection of a rotor blade may be applied both, during manufacturing of the blade and during a repair process of the blade.
  • Wind turbines installed in the field which comprise rotor blades with common erosion protection systems need surface inspection and repair on a regular basis. This is expensive for wind turbine operators and in particular for those who operate wind turbines offshore where maintenance work is par ⁇ ticularly demanding and rough weather conditions only allow for short maintenance windows .
  • the present invention aims at overcoming the drawbacks of the prior art. This objective is solved by a protective cap as claimed in claims 1, a wind turbine rotor blade as claimed in claim 13, a method for manufacturing a wind turbine rotor blade as claimed in claim 14 and a wind turbine as claimed in claim 15.
  • the protective cap for protecting a leading edge of a wind turbine rotor blade from erosion is curved so as to be fas ⁇ tened to a leading edge of a wind turbine rotor blade.
  • the protective cap comprises one or more slits to create flexi ⁇ bility in the protective cap.
  • the protective cap may on the one hand, be rigid enough to protect a rotor blade surface in a secure manner when at- tached to a rotor blade.
  • the protective cap does not peel off from the surface of the rotor blade it is bonded to because of its flexibility.
  • the cap accommodates different expansion and shrinking effects of the material of the rotor blade and its own material. This prevents the pro- tective cap from peeling off in various weather conditions.
  • the protective cap according to the invention has a longer protective life than polyurethane tapes or coatings known in the art because of a greater resistance to rain ero- sion, long-lasting exposure to light, saltwater and so on. Thus there is no need any more for replenishing the leading edge protection repeatedly during the operational life of the wind turbine. This will reduce the maintenance costs, espe ⁇ cially for offshore wind turbines.
  • the protective cap may be fastened more easily to the blade surface because it is drapable and may adapt to different geometric shapes of wind turbine rotor blades, including those having a double curved structure.
  • the method for manufacturing and/or repairing a leading edge of a wind turbine rotor blade according to the invention comprises the steps of applying an adhesive to the leading edge of the rotor blade, fastening a protective cap according to the present invention to the leading edge of the rotor blade, and optionally, releasing a stabilizing element from the protective cap before or after fastening the protective cap to the leading edge of the wind turbine rotor blade.
  • the stabilizing element like a tape or a strip may be fastened to the protective cap in a detachable manner and facilitates mounting of the protective cap.
  • the protective cap has the shape of a parabolic channel which is elongate in a longitudinal direction and curved in a transversal direc ⁇ tion of the protective cap.
  • the protective cap may have an oblong shape in the longitudinal direction.
  • the protective cap comprises one or more slits in form of perforations, preferably elongate perforations.
  • the one or more perfora- tions provide flexibility or elasticity to the protective cap, they especially allow for bending the protective cap. So, the cap may comprise a stiff material for enhanced pro ⁇ tection of a surface of a wind turbine rotor blade and is however flexible enough to provide a tight fit with the sur- face of the wind turbine rotor blade.
  • the protective cap may follow flapwise and/or edgewise deformations of a wind turbine rotor blade when ad ⁇ hered thereto.
  • the one more slits cut through an outer edge of the protective cap.
  • These one or more slits also provide flexibility or elastici- ty to the protective cap, they especially allow for bending and stretching the protective cap.
  • the cap may comprise a stiff material for enhanced protection of a surface of a wind turbine rotor blade and is however flexible enough to provide a tight fit with the surface of the wind turbine rotor blade.
  • the protective cap may follow flapwise and/or edgewise deformations of a wind turbine rotor blade when ad ⁇ hered thereto.
  • the cap has an oblong shape and is curved in the transversal direc ⁇ tion, wherein the one or more slits run in the transversal direction.
  • the protective cap comprises a first slit (4b) and a second slit which run in parallel to each other.
  • the first slit begins with a first margin from the first outer edge and cuts through a second outer edge whereas the second slit begins with a second margin from the second outer edge and cuts through the first outer edge.
  • the first and second slits alternate in a direction perpendicular to the first and second outer edges. They may both extend in lateral direction and beyond the centerline which leads to a meander-shaped protective cap.
  • the protective cap is stretchable in different directions, is very flexible and adapts to different shapes and deformations of the wind turbine rotor blade.
  • the one or more slits of the protective cap are uniformly spaced from each other. This will lead to an equal distribution of forces in the protective cap.
  • the protective cap comprises a metal material.
  • the pro ⁇ tective cap comprises a material having a Young' s Modulus of at least 100 GPa, e.g. titanium.
  • the protective cap may protect the leading edge of a wind turbine rotor blade for a very long time, most probably during the whole lifetime of the wind turbine.
  • the pro- tective cap has an uneven inner surface, e.g. comprises de ⁇ pressions or elevations.
  • the uneven inner surface eases bond ⁇ ing of the protective cap to a wind turbine rotor blade.
  • a so designed inner surface also leads to a stronger bond. If an adhesive is applied onto the inner surface for bonding the cap to a wind turbine rotor blade, the uneven inner surface may also avoid that the adhesive squeezes out between the protective cap and the blade surface during mounting.
  • the protective cap comprises a wiring system for de-icing a wind turbine rotor blade. This would allow for a combined erosion protection and de-icing cap for the leading edge of a wind turbine blade.
  • the protec ⁇ tive cap 3 comprises a stabilizing element, e.g. a strip or tape. This stabilizing element may be detachably fastened to the protective cap 3 and is used for stabilizing it temporar ⁇ ily, e.g. during handling thereof.
  • Fig. 1 shows a wind turbine (prior art)
  • Fig. 2 shows a plan view of a wind turbine rotor blade
  • Fig. 3 shows the profile of a wind turbine rotor blade
  • Fig. 4 shows a plan view of a wind turbine rotor blade
  • Fig. 5 shows a top view of a protective cap according to an embodiment of the invention, the protective cap is shown non-curved to illustrate shape and posi ⁇ tion of the slits
  • Fig. 6 shows a top view of a protective cap according to another embodiment of the invention, the protective cap is also shown non-curved to illustrate shape and position of the slits
  • Fig. 7 shows a perspective view of a protective cap
  • Fig. 8 shows a perspective view of a protective cap
  • Fig. 9 shows a perspective view of a protective cap
  • Fig. 10 shows a perspective view of a protective cap having an uneven inner surface according to an embodiment of the invention
  • Fig. 11 shows a perspective view of a protective cap
  • the protective cap according to the invention could also be referred to as protective shield or protective cover.
  • Fig. 1 shows a typical wind turbine (51) comprising a tower (52), a nacelle (53), a generator (56) and blades (55).
  • the blades (55) are attached to a hub (54) . They capture the en ⁇ ergy of the wind, spinning a generator (56) in the nacelle (53) .
  • the tower (52) contains the electrical conduits, sup ⁇ ports the nacelle (53) , and provides access to the nacelle (53) for maintenance.
  • Fig. 2 shows a plan view of a wind turbine rotor blade (55) comprising a tip (57) and a root (58), a leading edge (59) and a trailing edge (60) .
  • the blade (55) further comprises a shoulder (3) near its root (58) and an airfoil portion (62) .
  • Fig. 3 shows the profile of a rotor blade (55) including a leading edge (59), a trailing edge (60) as well as suction and pressure sides (65, 64) between the leading and the trailing edges (59, 60) .
  • a wind turbine rotor blade 55 comprising a protective cap 3 according to the present invention.
  • the protective cap 3 is fastened to the leading edge of the blade 55.
  • the protective cap 3 may also be adhered to the trailing edge 60 of a wind turbine rotor blade 55.
  • the shape of the protective cap would be adapted to the shape of the trailing edge or a part thereof.
  • the protective cap 3 may cover the whole length leiade of the leading edge 59. Since the relative speed decreases towards the root end 58 of the wind turbine rotor blade 55 when in operation, it is preferred that the protective cap 3 is only adhered to the outer part of the blade to an outer length l outer of the leading edge 59.
  • this outer length l outer is in the range of an outermost third to an outermost two-thirds of the blade length leiade / wherein the term blade length refers to the length of the leading edge 59 of the wind turbine rotor blade 55.
  • the protective cap 3 is segmented or several of the protective caps 3 are placed on and adhered to the leading edge 59 of the wind tur ⁇ bine rotor blade 55 adjacently to each other.
  • the shape of the protective cap 3 or a segment thereof, e.g. a curvature is adapted to the shape of the wind turbine rotor blade in a portion of the outer length l ou ter of the leading edge 59.
  • the term curvature may include the bending rate of the protective cap 3.
  • Fig. 5 shows a top view of a protective cap 3 for protecting a leading edge 59 of a wind turbine rotor blade 55 from ero ⁇ sion according to an embodiment of the present invention.
  • the protective cap 3 is curved so as to be fastened to a leading edge of a wind turbine rotor blade.
  • the protective cap 3 may be substantially shaped as a parabolic channel.
  • the protective cap 3 comprises one or more slits 4, 4c to create flexibility in the protective cap 3.
  • the term "slit” may also be referred to as "cut”.
  • the one or more slits may be gaps with a constant width.
  • the protective cap 3 may be manufactured by bending a sheet and by cutting using a laser cutter or a plasma cutter. The slits may be cut before or after bending.
  • the protective cap 3 may have an oblong shape with a longitu ⁇ dinal direction L and a transversal direction, wherein it is curved in the transversal direction.
  • a first outer edge 1 and a second outer edge 2 of the protective cap 3 may run in lon ⁇ gitudinal direction L of the protective cap 3.
  • the one or more slits 4, 4c may be perfo ⁇ rations.
  • a perforation 4c may also be referred to as a slit 4c which does not cut through any of the outer edges of the protective cap 3.
  • the one or more slits 4c begin with a first margin from an edge 1, 2 of the protective cap 3 and terminate with a second margin from another edge 2 of the protective cap 3.
  • the first margin and the second mar ⁇ gin may be equidistant which leads to an equal distribution of forces in the protective cap 3.
  • the slits 4, 4c are uniformly spaced from each other throughout the protective cap 3. This also leads to an equal distribution of forces in the protective cap 3.
  • the space between two slits 4, 4c may be in the range of 10mm to 40mm, preferably 25 mm.
  • the protective cap comprises elongate perforations 4, 4c.
  • the elongate perforations 4, 4c may run in parallel to each oth ⁇ er. They provide some flexibility or elasticity to the pro- tective cap 3, e.g. allow the protective cap 3 to bend to some extent when in operation.
  • the slits 4, 4c allow the protective cap 3 to adapt to the shape of the wind turbine rotor blade 55 when adhered thereto. So, the cap 3 may comprise a stiff material for enhanced protection of a surface of the wind turbine rotor blade and is however flexi ⁇ ble enough to provide a tight fit with the wind turbine rotor blade .
  • elongate perforations which run in lat- eral direction of the protective cover 3 and which are dis ⁇ tributed along the longitudinal direction of the protective cap 3, allow the cap 3 to follow the bending of a wind tur ⁇ bine rotor blade 55 in edgewise direction. This may happen when the protective cap 3 is mounted to the wind turbine ro- tor blade 55, when this blade is attached to a wind turbine 51 and the wind turbine 51 is in operation.
  • elongate perforations which run in lat- eral direction of the protective cover 3 and which are dis ⁇ tributed along the longitudinal direction of the protective cap 3, allow the cap 3 to follow the bending of a wind tur ⁇ bine rotor blade 55 in edgewise direction. This may happen when the protective cap 3 is mounted to the wind turbine ro- tor blade 55, when this blade is attached to a wind turbine 51 and the wind turbine 51 is in operation.
  • Fig. 6 the one more slits 4, 4a, 4b cut through an outer edge 1, 2 of the protective cap 3.
  • Such slits 4, 4a, 4b which cut through an outer edge 1, 2 of the protective cap 3 are also shown in Fig. 7 to Fig. 10.
  • the protective cap 3 has an oblong shape and is curved in the trans ⁇ versal direction, wherein the one or more slits 4, 4a, 4b which cut through an outer edge 1, 2 of the protective cap 3 run in the transversal direction.
  • the slits 4, 4a, 4b are preferably elongate slits. As shown in Fig. 7, this allows inter alia for stretching the protective cap 3 in the longitudinal direction of the cap 3.
  • the protective cap 3 comprises a first slit 4b and a second slit 4a which run in parallel to each other.
  • the first slit 4b be ⁇ gins with a first margin from a first outer edge 1 and cuts through a second outer 2 edge
  • the second slit 4a be ⁇ gins with a second margin from the second outer 2 edge and cuts through the first outer edge 1.
  • first and second outer edges 1, 2 may extend in longitudinal direction of the protective cap 3 and the slits 4a, 4b cut through these outer edges 1, 2. This al- lows the protective cap 3 to follow the up- and down-bending of a wind turbine rotor blade 55 in flapwise direction when attached to this wind turbine rotor blade 55.
  • the first and se- cond slits 4b, 4a alternate in a direction perpendicular to the first and second outer edges 1, 2. They may both 4a, 4b extend in lateral direction and beyond the centerline CL which results in a meander-shaped protective cap 3.
  • the protective cap is stretchable and benda- ble in different directions, e.g. dir 1, dir 2. This is il ⁇ lustrated in Fig. 8.
  • the so designed protective cap 3 may adapt to different shapes and deformations of the wind tur- bine blade 55 when attached thereto.
  • the one or more slits 4, 4a, 4b of the protective cap may be uniformly spaced from each other which leads to a equal distribution of forces in the protective cap 3.
  • the space between two slits 4, 4a, 4b running in parallel to each other may be in the range of 10mm to 40mm, preferably 25 mm.
  • the first and/or second outer margin may also be in the range of 10mm to 40mm, preferably 25 mm.
  • the protective cap comprises a metal material. It may comprise tita ⁇ nium, steel, aluminum or an alloy comprising one or more of these metals.
  • the protective cap may comprise a fiber reinforced plastic material, e.g. carbon fiber rein ⁇ forced plastic.
  • the protective cap 3 comprises a material having a Young's Modulus of at least 100 GPa. As illustrated in Fig. 8, the protective cap 3 may be very flexible due to the one or more slits 4, 4a, 4b, 4c.
  • the protective cap 3 may comprise a stabilizing element 6, shown in Fig. 9, for stabilizing the protective cap 3 during transporting and handling thereof.
  • This stabilizing element 6 is detachably fastened to the pro ⁇ tective cap 3, e.g. during manufacturing of the protective cap 3.
  • the stabilizing element 6 is designed to be released from the protective cap 3 before or after fastening the pro- tective cap 3 to the leading edge 59 of the wind turbine ro ⁇ tor blade 55.
  • the stabilizing element 6 may be detachably fastened to the inner surface 5 of the protective cap 3. In this case it has to be released before fastening the protective cap 3 to the wind turbine rotor blade 55.
  • the stabiliz- ing element 6 is fastened to the outer surface of the protec ⁇ tive cap 3. So, the protective cap 3 may be placed first onto the wind turbine rotor blade 55.
  • the stabilizing ele ⁇ ment 6 may be detached to provide full flexibility to the protective cap 3.
  • the stabilizing element 6 may have some flexibility itself so as to enable the protective cap 3 to adapt to the shape of the wind turbine rotor blade 55 when mounted thereon. After releasing the stabilizing element 6 from the protective cap 3 the flexibility of the pro ⁇ tective cap 3 raises further.
  • the stabilizing element 6 may be rigid, pliable or flexible. It may comprise a lath, a strip or a tape, e.g. a textile or plastic tape.
  • the stabilizing element 6 may be fastened to the protective cap 3 by a non-permanent adhesive or a by mag- netic means. It may be fastened at any position outside or inside the protective cap 3, e.g. along the centerline of the protective cap. Preferably, it is fastened close to or at the first outer edge 1 and/or the second outer edge 2.
  • the protective cap 3 has an uneven inner surface 5 which may comprise dimples 8, indentations 8, nubs 8 or simi ⁇ lar, preferably arranged in a pattern.
  • a so designed inner surface 5 facilitates bonding of the protective cap 3 to a wind turbine rotor blade 55 and leads to a stronger bond. If glue is applied onto the inner surface 5 for bonding the cap 3 to a wind turbine rotor blade 55, the depressions 8 or ele ⁇ vations 8 may also avoid that the glue squeezes out between the cap 3 and the blade surface. For bonding an adhesive like epoxy resin or polyester resin may be used.
  • the protective cap comprises a wiring system 9 for de-icing a wind turbine rotor blade.
  • a wiring system 9 for de-icing the wind turbine rotor blade 55 may be incorporated into the protective cap 3.
  • the wiring system 9 may be located on the inner surface 5 of the protective cap 3 and may be used to heat the protective cap 3 and the wind turbine rotor blade 55. This allows for having a combined system designed for erosion protection and for de-icing of a wind turbine rotor blade 55.
  • the wiring system 9 for de-icing may also be connected to the lightning connection in the wind turbine rotor blade 55, e.g. via through going holes in this blade 55.
  • the method for manufacturing and/or repairing a leading edge of a wind turbine rotor blade 55 comprises the steps of ap ⁇ plying an adhesive to the leading edge 59 of a rotor blade 55 and fastening the protective cap 3 to the leading edge 59 of the rotor blade 55.
  • a stabilizing element 6 which is detachably attached to the protective cap 3 is re ⁇ leased from it before or after fastening the protective cap 3 to the leading edge 59 of the wind turbine rotor blade 55.
  • the wind turbine according to the present invention comprises at least one rotor blade with a protective cap 3 as described herein .
  • the protective cap 3 is applied during manufacturing of the wind turbine rotor blade 55 and as a re ⁇ pair solution, the protective cap 3 is applied in the field. In addition, it may be applied to retrofit an already in- stalled wind turbine rotor blade 55.

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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 un capuchon de protection (3) pour protéger un bord d'attaque (59) d'une pale de rotor d'éolienne (55) contre l'érosion. Le capuchon de protection (3) est incurvé de façon à être fixé à un bord d'attaque de la pale de rotor d'éolienne (55) et comprend une ou plusieurs fentes (4, 4a, 4b, 4c) pour créer une flexibilité dans le capuchon de protection (3). L'invention concerne également une pale de rotor d'éolienne correspondante (55) comprenant le capuchon de protection (3) et un procédé de fabrication et/ou de réparation d'un bord d'attaque d'une pale de rotor d'éolienne (55).
PCT/EP2017/067485 2016-09-30 2017-07-12 Capuchon de protection pour protéger un bord d'attaque d'une pale de rotor d'éolienne WO2018059763A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016219095.4 2016-09-30
DE102016219095 2016-09-30

Publications (1)

Publication Number Publication Date
WO2018059763A1 true WO2018059763A1 (fr) 2018-04-05

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ID=59399397

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/067485 WO2018059763A1 (fr) 2016-09-30 2017-07-12 Capuchon de protection pour protéger un bord d'attaque d'une pale de rotor d'éolienne

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Country Link
WO (1) WO2018059763A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021173392A1 (fr) * 2020-02-25 2021-09-02 General Electric Company Capuchon de protection de bord d'attaque résistant à l'érosion à base de tungstène pour pales de rotor
WO2022084506A1 (fr) * 2020-10-23 2022-04-28 Blade Dynamics Limited Pale de rotor d'éolienne avec un élément de bord d'attaque

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1842178A (en) * 1930-02-15 1932-01-19 Westinghouse Electric & Mfg Co Propeller
US4895491A (en) * 1988-06-17 1990-01-23 Environmental Elements Corp. Fan blade protection system
WO2004076852A2 (fr) * 2003-02-28 2004-09-10 Vestas Wind Systems A/S Procede de fabrication d'une pale d'eolienne, pale d'eolienne, capot avant et utilisation d'un capot avant
WO2011147416A2 (fr) * 2010-05-26 2011-12-01 Vestas Wind Systems A/S Composant de turbine éolienne comprenant une couche de surface pour empêcher l'adhésion de glace
EP2497943A1 (fr) 2011-03-11 2012-09-12 Siemens Aktiengesellschaft Agencement pour améliorer la surface d'une pale d'éolienne
US20130101426A1 (en) * 2011-01-26 2013-04-25 Fujikura Rubber Ltd Blade and laminated protective sheet for the blade
US20140050581A1 (en) * 2012-07-15 2014-02-20 Peter Ireland Erosion protection system and method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1842178A (en) * 1930-02-15 1932-01-19 Westinghouse Electric & Mfg Co Propeller
US4895491A (en) * 1988-06-17 1990-01-23 Environmental Elements Corp. Fan blade protection system
WO2004076852A2 (fr) * 2003-02-28 2004-09-10 Vestas Wind Systems A/S Procede de fabrication d'une pale d'eolienne, pale d'eolienne, capot avant et utilisation d'un capot avant
WO2011147416A2 (fr) * 2010-05-26 2011-12-01 Vestas Wind Systems A/S Composant de turbine éolienne comprenant une couche de surface pour empêcher l'adhésion de glace
US20130101426A1 (en) * 2011-01-26 2013-04-25 Fujikura Rubber Ltd Blade and laminated protective sheet for the blade
EP2497943A1 (fr) 2011-03-11 2012-09-12 Siemens Aktiengesellschaft Agencement pour améliorer la surface d'une pale d'éolienne
US20140050581A1 (en) * 2012-07-15 2014-02-20 Peter Ireland Erosion protection system and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021173392A1 (fr) * 2020-02-25 2021-09-02 General Electric Company Capuchon de protection de bord d'attaque résistant à l'érosion à base de tungstène pour pales de rotor
US11441545B2 (en) 2020-02-25 2022-09-13 General Electric Company Tungsten-based erosion-resistant leading edge protection cap for rotor blades
WO2022084506A1 (fr) * 2020-10-23 2022-04-28 Blade Dynamics Limited Pale de rotor d'éolienne avec un élément de bord d'attaque

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