WO2018059768A1 - Agencement de pale de rotor d'éolienne - Google Patents

Agencement de pale de rotor d'éolienne Download PDF

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Publication number
WO2018059768A1
WO2018059768A1 PCT/EP2017/067846 EP2017067846W WO2018059768A1 WO 2018059768 A1 WO2018059768 A1 WO 2018059768A1 EP 2017067846 W EP2017067846 W EP 2017067846W WO 2018059768 A1 WO2018059768 A1 WO 2018059768A1
Authority
WO
WIPO (PCT)
Prior art keywords
leading edge
wind turbine
rotor blade
turbine rotor
protective cover
Prior art date
Application number
PCT/EP2017/067846
Other languages
English (en)
Inventor
Finn Daugaard Madsen
Jason Stege
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 WO2018059768A1 publication Critical patent/WO2018059768A1/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
    • F05B2230/00—Manufacture
    • F05B2230/90—Coating; Surface treatment
    • 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

  • Wind turbine rotor blade arrangement The invention concerns a wind turbine rotor blade arrangement and a corresponding method for manufacturing such an arrangement .
  • wind turbine rotor blades are made of fibre rein- forced plastic composite material. This is why wind turbine rotor blades and in particular those of offshore wind tur ⁇ bines are specially affected by wear which occurs where in ⁇ teracting with particles or droplets result in degrading of their leading edge. Erosion of the leading edge of the wind turbine rotor blades may reduce the aerodynamic efficiency of the wind turbine rotor blades and the power output of the wind turbine.
  • the wind turbine rotor blade arrangement comprises a wind turbine rotor blade having a leading edge, the leading edge comprising an impact zone, and a protective cover for pro- tecting the leading edge, the protective cover comprising a centerline zone.
  • the protective cover is attached to the leading edge solely outside of the impact zone so to obtain an air space between the impact zone of the leading edge and the centerline zone of the protective cover.
  • the corresponding method for manufacturing a wind turbine rotor blade (55) arrangement comprising the following steps of: Providing a wind turbine rotor blade (55), the wind tur ⁇ bine rotor blade (55) having a leading edge (59) , the leading edge (59) comprising an impact zone (2);
  • the protective cover (3) comprising a centerline zone (5) ;
  • leading edge (59) of the wind turbine rotor blade (55) is .
  • the wind turbine according to the invention comprises at least one wind turbine rotor blade arrangement 10 according to the invention.
  • Advantages of the invention are: • leading edge protection, especially polymer leading edge protection, without delamination from the bond to blade
  • the protective cover 3 is solely adhered to an outer part of the leading edge 59, preferably in the range of an outermost third to an outermost two-thirds of the length of the wind turbine rotor blade l B iacie .
  • FIG. 2 shows a wind turbine (prior art) Fig. 2
  • FIG. 3 shows a plan view of a wind turbine rotor blade (prior art) Fig. 3
  • FIG. 1 shows a plan view of a wind turbine rotor blade according to the invention
  • FIG. 1 shows a plan view of a wind turbine rotor blade according to the invention
  • Fig. 5 shows a part of a wind turbine rotor blade according to the invention
  • a protective cover 3 especially a polymer cover, may be attached to the leading edge 59 by the sides, outside of the impact zone 2. Since there is no bond to fatigue in the impact zone 2, the cover 3 will last as long as the shell surface does, rather than failing earlier from delamination .
  • the protective cover 3 can be as thin as 200 microns in the center or thicker if there is a requirement to cover existing damage.
  • the material should fade or become thin outside of the impact zone 2 to blend with the airfoil.
  • Hotmelt films, liquid adhesive, or simply high performance acrylic tape is sufficient for attachment.
  • the forces are primarily in the impact zone 2 and press the protective cover 3 to the blade, the bonding force required to keep the pro ⁇ tective cover 3 in position is quite small.
  • the shell can be created with very thin wings to blend into the airfoil and ensure no negative aerodynamic performance.
  • Extrusion or injection molding can create the correct geometry with a thicker center and thin wings.
  • 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 cover the energy of the wind, spinning a generator (56) in the nacelle (53) .
  • the tower (52) contains the electrical conduits, supports 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).
  • Fig. 4 shows a wind turbine rotor blade arrangement according to the present invention.
  • the wind turbine rotor blade ar ⁇ rangement 10 comprises a wind turbine rotor blade 55 having a leading edge 59, the leading edge 59 comprising an impact zone 2, and a protective cover 3 for protecting the leading edge 59, the protective cover 3 comprising a centerline zone 5.
  • the protective cover 3 is attached to the leading edge 59 solely outside of the impact zone 2 so to obtain an air space 1 between the impact zone 2 of the leading edge 59 and the centerline zone 5 of the protective cover 3.
  • the impact zone 2 extends along the very leading edge of the wind turbine blade 55 whereas the centerline zone 5 extends along the centerline of the protective cover 3 which center- line is running in longitudinal direction L of the wind tur ⁇ bine blade 55.
  • the air space 1 refers to a distance or an air gap between the leading edge 59 and the protective cover 3 where no bond- ing material is present.
  • the protective cover 3 comprises an inner surface facing the leading edge 59. The the air space 1 is located between this inner surface and the leading edge.
  • the protective cover 3 further comprises a first side portion 7 and a second side portion 8.
  • the side portions 7, 8 may ta ⁇ per towards their outer edges.
  • bonding ma ⁇ terial 4 is located between the first side portion 7 and the leading edge 59. Further bonding material 4 is located be ⁇ tween the second side portion 8 and the leading edge 59.
  • Fig.5 shows an embodiment of the wind turbine rotor blade ar- rangement according to the present invention.
  • the protective cover 3 is fastened to the leading edge of the blade 55. It may cover the whole length lei ade 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 cover 3 is only adhered to the outer part of the blade to an outer length l ou ter of the leading edge 59. Preferably, this outer length l ou ter is in the range of an outermost third to an outermost two-thirds of the blade length lei ade / wherein the term blade length re ⁇ fers to the length of the leading edge 59 of the wind turbine rotor blade 55.
  • the protective cover 3 is segmented or several of the protective covers 3 are placed on and adhered to the leading edge 59 of the wind turbine rotor blade 55 adjacently to each other in longitudi ⁇ nal direction L of the wind turbine rotor blade.
  • the shape of the protective cover 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 cover 3.
  • the corresponding method for manufacturing a wind turbine rotor blade arrangement 10, according to the invention, comprises the steps of:
  • the protective cover 3 may be applied according to this method during manufacturing of the wind turbine rotor blade 55 whereas as a repair solution, the protective cover 3 may be applied according to this method in the field. In ad ⁇ dition, the protective cover 3 may be applied according to this method to retrofit an already installed wind turbine ro- tor blade 55.
  • the bonding material 4 may be applied to the leading edge 59 of the wind turbine rotor blade 55 by a spatula or a spray can.
  • the bonding material 4 may also be a resin, e.g. an epoxy resin or a polyester resin or an adhesive sheet.
  • a wind turbine comprises at least one wind turbine rotor blade arrangement 10 according to one the embodiments described above.
  • the protective cover comprises a polymer material.
  • the polymer mate ⁇ rial may comprise polyurethane . It may also comprise rein ⁇ forcing fibers, e.g. glass fibers or carbon fibers.

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 un agencement de pale de rotor d'éolienne (10) comprenant une pale de rotor d'éolienne (55) ayant un bord d'attaque (59), le bord d'attaque (59) comprenant une zone d'impact (2), et un couvercle de protection (3) pour protéger le bord d'attaque (59), le couvercle de protection (3) comprenant une zone de ligne médiane (5), le couvercle de protection (3) étant fixé au bord d'attaque (59) uniquement à l'extérieur de la zone d'impact (2) de façon à obtenir un espace d'air (1) entre la zone d'impact (2) du bord d'attaque (59) et la zone de ligne médiane (5) du couvercle de protection (3).
PCT/EP2017/067846 2016-09-30 2017-07-14 Agencement de pale de rotor d'éolienne WO2018059768A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016219123 2016-09-30
DE102016219123.3 2016-09-30

Publications (1)

Publication Number Publication Date
WO2018059768A1 true WO2018059768A1 (fr) 2018-04-05

Family

ID=59350940

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/067846 WO2018059768A1 (fr) 2016-09-30 2017-07-14 Agencement de pale de rotor d'éolienne

Country Status (1)

Country Link
WO (1) WO2018059768A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112930439A (zh) * 2018-10-01 2021-06-08 西门子歌美飒可再生能源公司 用于将保护壳安装到风力涡轮机叶片的粘合片以及用于将保护壳安装到风力涡轮机叶片的方法
GB2602463A (en) * 2020-12-28 2022-07-06 Blade Dynamics Ltd Protective cap for a leading edge of a wind turbine blade
US11560798B2 (en) * 2018-10-17 2023-01-24 Rolls-Royce Plc Component shielding

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2141357A1 (fr) * 2008-07-03 2010-01-06 Dundalk Institute of Technology Pale d'éolienne
EP2559891A2 (fr) * 2011-08-17 2013-02-20 General Electric Company Pale d'éolienne et son procédé de protection
US20150132140A1 (en) * 2011-12-19 2015-05-14 Lm Wp Patent Holding A/S Erosion shield for a wind turbine blade
EP2927482A1 (fr) * 2014-04-01 2015-10-07 LM WP Patent Holding A/S Pale de turbine éolienne pourvue d'un écran de protection contre l'érosion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2141357A1 (fr) * 2008-07-03 2010-01-06 Dundalk Institute of Technology Pale d'éolienne
EP2559891A2 (fr) * 2011-08-17 2013-02-20 General Electric Company Pale d'éolienne et son procédé de protection
US20150132140A1 (en) * 2011-12-19 2015-05-14 Lm Wp Patent Holding A/S Erosion shield for a wind turbine blade
EP2927482A1 (fr) * 2014-04-01 2015-10-07 LM WP Patent Holding A/S Pale de turbine éolienne pourvue d'un écran de protection contre l'érosion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112930439A (zh) * 2018-10-01 2021-06-08 西门子歌美飒可再生能源公司 用于将保护壳安装到风力涡轮机叶片的粘合片以及用于将保护壳安装到风力涡轮机叶片的方法
US11560798B2 (en) * 2018-10-17 2023-01-24 Rolls-Royce Plc Component shielding
GB2602463A (en) * 2020-12-28 2022-07-06 Blade Dynamics Ltd Protective cap for a leading edge of a wind turbine blade

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