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WO2018157929A1 - Pale de rotor d'éolienne comportant un système de protection contre l'érosion - Google Patents

Pale de rotor d'éolienne comportant un système de protection contre l'érosion Download PDF

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Publication number
WO2018157929A1
WO2018157929A1 PCT/EP2017/054848 EP2017054848W WO2018157929A1 WO 2018157929 A1 WO2018157929 A1 WO 2018157929A1 EP 2017054848 W EP2017054848 W EP 2017054848W WO 2018157929 A1 WO2018157929 A1 WO 2018157929A1
Authority
WO
WIPO (PCT)
Prior art keywords
protection
edge protection
leading edge
rotor blade
blade
Prior art date
Application number
PCT/EP2017/054848
Other languages
German (de)
English (en)
Original Assignee
Fichtner & Schicht GmbH
Nordex Blade Technology Centre ApS
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 Fichtner & Schicht GmbH, Nordex Blade Technology Centre ApS filed Critical Fichtner & Schicht GmbH
Priority to PCT/EP2017/054848 priority Critical patent/WO2018157929A1/fr
Publication of WO2018157929A1 publication Critical patent/WO2018157929A1/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

Definitions

  • the invention relates to a wind turbine rotor blade having a leading edge, a trailing edge, a blade root, a blade tip, a shell defining an aerodynamic shape of the rotor blade, and an erosion protection assembly having a leading edge protector extending along the leading edge secured to the shell of the rotor blade ,
  • the efficiency of a wind energy plant is decisively influenced by the surface condition and the geometry of the rotor blades.
  • the rotor blades are exposed to extreme stresses due to rain, dust and hail on the one hand and due to the dynamic stress during operation and the occurring loads due to (sea) salt, temperature changes and UV radiation.
  • the rotor blades are subject to very high load cycles with relatively high strain levels. This leads to additional material fatigue of the surface texture. In particular, crack formation and material erosion in the area of the surfaces of the rotor blades lead to aerodynamically disadvantageous changes.
  • the rotor blades of wind turbines are heavily loaded during operation, in particular in the region of a front edge which is streamed during rotation and in the region of the blade tip rotating at high speed.
  • a material removal can also be observed in the region of a trailing edge of the rotor blades opposite the leading edge.
  • the erosion wear with its abrasive effect affects in particular the aerodynamics of the wind turbine and its efficiency negative. This increases the maintenance and repair costs.
  • the elongated profile body is designed as Galvanoformteil in one piece or in one piece. It has a hardness of 608 HV or more. To realize this hardness of the profile body is made of an alloy with cobalt and phosphorus. However, the profile body has not been widely used in practice so far.
  • the lightning protection is usually realized today by distributed over the surface of the rotor blade a plurality of receptors is provided which are contacted with a provided inside the rotor blade electrical conductor and connected in the blade root with an electrically conductive grounded lightning rod are.
  • a plurality of receptors is provided which are contacted with a provided inside the rotor blade electrical conductor and connected in the blade root with an electrically conductive grounded lightning rod are.
  • the receptors are in particular realized in one piece or in one piece and formed elongated. They are for example made of solid material and applied in the region of the leading edge or the trailing edge of the rotor blade.
  • the object of the present invention is to provide a wind turbine rotor blade which is particularly easily and permanently protected against erosion. This object is achieved by the wind turbine blade with the features of claim 1. Advantageous embodiments are specified in the dependent claims.
  • the wind turbine rotor blade has a leading edge, a trailing edge, a blade root, a blade tip, a shell defining an aerodynamic shape of the rotor blade, and an erosion protection assembly having a leading edge protector extending along the leading edge secured to the shell, the leading edge protector being a plurality of parts is formed and has a plurality of individual, along the front edge adjacent arranged protective segments.
  • the shell may be composed of several parts, in particular of two half-shells. This may be, for example, a suction-side half-shell and a pressure-side half-shell. It is also possible, the shell of a leading edge segment, which forms the profile nose edge, and one or more other segments together. The plurality of shell forming parts may in particular be glued together.
  • the leading edge is commonly referred to as Profilnasenkante.
  • the trailing edge is usually also referred to as profile end edge.
  • the particular advantage of the invention is that the segmentation allows an installation, rotor blade or site-specific optimization and adaptation of the leading edge protection. By providing the segmented leading edge protection, erosion has been effectively counteracted. At the same time an increased flexibility or compliance is provided, which allows to withstand the mechanical alternating loads acting on the rotor blade.
  • the high mechanical alternating loads originate on the one hand from the changing wind loads and on the other hand from the load due to the dead weight in a rotating rotor.
  • the protective segments due to the small sizes compared to the known from the prior art, one-piece or one-piece solutions are inexpensive to manufacture and easy to apply.
  • a size of the protective segments arranged adjacent to one another can be selected or determined depending on the load. For example, the application of the protective segments by means of an adhesive.
  • the mechanical (shear) load in the region of the adhesive (bonding of the protective segments to the shell of the rotor blade) and in the protective segments themselves is less than for the one-piece or one-piece design due to the segmented design for each individual protection segment of the leading edge protection.
  • the multi-part allows so far a compensating movement or displacement of the protective segments to each other or each other during operation, which leads to a mechanical relief and thus to a lower material stress.
  • the leading edge protector extends from the leading edge toward a trailing edge of the rotor blade over a range of 15% to 25% of the chord. The coverage of this area of the rotor blade is sufficient for effective erosion protection. A further enlargement of the leading edge protection increases the costs and has at most a slight, additional protective effect.
  • the leading edge protector may also be asymmetric, i. it may extend further towards the trailing edge on the suction side of the shell of the rotor blade than on the pressure side or vice versa.
  • the erosion protection arrangement has a blade tip guard fixed in the region of the blade tip on the shell of the rotor blade or a trailing edge guard which extends along a trailing edge of the rotor blade opposite the leading edge.
  • the blade tip protection preferably connects directly to the leading edge protection and / or the trailing edge protection.
  • the trailing edge protector like the leading edge protector, may be multi-part and segmented, with a plurality of protective segments adjacent to the trailing edge. beard are arranged.
  • the blade tip protection may be formed in one piece or in several parts.
  • the individual components (protective segment, blade tip protection, leading edge protection, trailing edge protection) of the erosion protection arrangement are produced according to a preferred embodiment of the invention as Galvanoformmaschine primitive.
  • an electrically conductive metallic alloy is used to prepare the components which comprises at least 70% nickel and between 0% and 30% cobalt and / or saccharin.
  • further components can be provided.
  • the metallic alloy is phosphorus-free.
  • a galvanoforming part is characterized in that the entire component is produced by forming only by the deposition of the metallic alloy. On support components, which are galvanically coated and remain in the finished component is omitted in a Galvanoformteil. The deposition takes place so far on a shaped body, which is removed after manufacture. In this respect, no classical galvanic coating method is used, in which only the surface of a shaping component is produced by a galvanic coating.
  • the various components of the erosion protection arrangement have a different material composition, which is chosen in particular according to the individual load situation.
  • the mechanical abrasion load or the mechanical wear in the area of the blade tip is greater than in a region close to the leaf root.
  • the hardness of the blade tip protection can be selected to be particularly high, while the hardness of the leaf root near protective segments of the leading edge protection or the trailing edge protection is lower.
  • the hardness can be influenced by the addition from cobalt.
  • the blade tip protection can in this respect have more cobalt than the leaf root close protection segments of the leading edge protection or the rear edge protection.
  • a length of the individual protection segments measured in the direction of a blade longitudinal direction or along the leading edge or the trailing edge of the rotor blade can vary. It can be provided, in particular, that the protective segments, which are provided in the region of the blade tip, are designed to be longer than the protective segments, which are applied in a central region of the rotor blade or close to the blade root.
  • the protection segment of the leading edge protection arranged closest to the blade root can be shorter than all other protective segments of the leading edge protection and / or the protection segment of the trailing edge protection arranged closest to the blade root can be shorter than all other protective segments of the trailing edge protection.
  • the different mechanical load and the different elongation or deformation can be taken into account.
  • the deformation is smaller in practice in the area of the blade tip than in the central area of the rotor blade or in the area of the blade root.
  • a thickness or wall thickness of the individual components of the erosion protection arrangement can be chosen as a function of load.
  • the protective segments provided in the region of the blade tip or the blade tip protection itself can have a large thickness or wall thickness, whereas the thickness or wall thickness of the protective segments decreases in the direction of the blade root.
  • the thickness or wall thickness of a single protection segment can be constant or vary. The same applies to the blade tip protection.
  • the thickness or wall thickness is in this case determined perpendicular to the inside of the protective segment and / or the blade tip protection.
  • the individual components of the erosion protection arrangement with respect to their material composition or the resulting hardness and in terms of their length and / or in terms of their thickness or wall thickness application specific and optimized according to their load.
  • relatively long guard segments having a high hardness and thickness adjacent to the blade tip may be provided, whereas the length, hardness, and / or thickness of the guard segments may be reduced toward the blade root.
  • the protection segments of the leading edge protection and the protection segments of the trailing edge protection can be designed such that they are fixed immediately adjacent to each other or immediately adjacent to the blade tip protection on the shell serving as a shaping component of the rotor blade.
  • the protective segments in this case have an inner side facing the shell and an outer side opposite the inner side. In the region of the inside of the protective segments, a flat executed connecting portion is formed. In the area of the connection, the protective segments are glued to the shell of the rotor blade.
  • At least individual protection segments have adjacent to the connecting portion in the region of the inside of a cover portion.
  • the cover portion is formed like the connecting portion surface.
  • An adhesion is not provided in the region of the overlap section. Instead, the overlap portion engages and rests against the outside of an adjacent guard segment.
  • the neighboring protective segments are in this respect associated with each other like scales or partially overlapping in the manner of roof tiles.
  • the overlapping portion may be disposed at the blade tip side end of a guard segment and disposed above the guard segment adjacent thereto.
  • the overlap portion may be disposed at the blade root end of a guard segment and disposed above the guard segment adjacent thereto.
  • protective segments which are arranged between two further protection segments and which each have at their blade tip side and at its blade root end an overlapping portion, with which they are respectively above or - arranged in a further variant - below the adjacent protective segments ,
  • the blade tip protection associated, extreme protection segment of the leading edge protection provides a protruding on the blade tip cover portion and which is formed on the corresponding arranged outermost protection segment of the trailing edge protection a cover portion which also protrudes on the blade tip protection.
  • the protective segments of the leading edge protection or the protective segments of the trailing edge protection are assigned touching each other.
  • the contact may, for example, in the region of adjacent end faces of the protective segments or preferably between the overlay section of a first protection segment on the one hand and the outside of an adjacent second protection segment on the other.
  • a contact between the leading edge protection and the blade tip protection on the one hand and the blade tip protection and the rear edge protection on the other hand is formed in an analogous manner.
  • the overlap can be carried out both in the direction of a rotor blade inner side and in the direction of a rotor blade outer side.
  • a protective segment on which abuts a cover portion of an adjacent protective segment a protrusion which extends along an edge of this overlapping portion.
  • the protrusion may in particular in a profile plane around the leading edge or around the trailing edge of the rotor blade. It extends from the shell to the outside and causes a located between the overlapping portion and the adjacent, partially covered by the overlap portion protection segment level is reduced or transferred by the protrusion in a curved contour, which may be aerodynamically advantageous.
  • an electrically conductive connecting element in the region of the leading edge protection and / or the trailing edge protection and / or the blade tip protection, can be guided through the shell of the rotor blade to an electrical conductor which is provided in an internal cavity of the shell or a wall of the shell is there and is led to the area of the leaf root.
  • the erosion protection arrangement is from a made electrically conductive material acts so far as a flat or elongated receptor for lightning strikes. It ensures seamless protection against erosion on the one hand and lightning strikes on the other.
  • an electrical contacting of the electrical conductor guided in the cavity of the shell is realized by a plurality of conductive connecting elements provided distributed in the region of the erosion protection arrangement or if a plurality of electrically conductive connecting elements at least partially separate a plurality of in the cavity associated with electrical conductors.
  • the electrical conductors are contacted in a manner known per se.
  • each protective segment of the leading edge protection and / or the trailing edge protection is connected via an electrically conductive connecting element, which is guided by the shell of the rotor blade, with an electrical conductor which is arranged in an inner cavity of the shell or in a wall of the shell and there it is led to the area of the leaf root.
  • the electrically conductive connecting element serves as an equipotential bonding element between a respective protective segment and the internal electrical conductor. Equipotential bonding offers the possibility of electrically discharging electrical energy after a lightning strike.
  • the blade tip is formed by a lightning protection receptor, which is connected to the leading edge protection and / or with the trailing edge protection.
  • the lightning protection receptor may in particular be made of metal. It is connected to a lightning conductor, which runs inside the rotor blade.
  • an electrical connection between lightning protection receptor and front and / or rear edge protection is helpful in order to prevent damage to lightning to prevent beating.
  • the electrical connection can be produced by a surface contact between the respective elements and / or via a separate connection element, for example a screw connection.
  • the lightning protection receptor on a front recess in which a blade tip side end of the leading edge protection is arranged so that an outer side of the leading edge protection is flush with an outside of the lightning protection receptor, and / or a rear recess in which a blade tip end of the rear edge protection arranged is such that an outer side of the rear edge protection is flush with an outside of the lightning protection receptor.
  • FIG. 1 is a schematic diagram of a wind energy plant with three distributed in the circumferential direction arranged, elongated rotor blades,
  • FIG. 2 is a perspective view of a rotor blade of the wind turbine with an erosion protection arrangement, wherein the erosion protection arrangement provides a leading edge protection, a blade tip protection and a trailing edge protection,
  • FIG 3 is an enlarged view of the erosion protection assembly mounted on the rotor blade, with the leading edge protection and the trailing edge protection are each formed segmented and have a plurality of adjacent to each other associated protective segments,
  • Fig. 4 shows a cross section through the rotor blade with the Invention according
  • FIG. 8 shows an enlarged detail of one of the two protective segments of the erosion protection arrangement according to FIG. 7, FIG.
  • FIG. 9 shows a trained attachment point, via which the erosion protection arrangement for realizing a lightning protection is electrically conductively connected to an electrical conductor, which is provided in a cavity of the rotor blade,
  • Fig. 11 designed as a lightning protection receptor blade tip with adjacent
  • the wind energy plant according to FIG. 1 comprises a tower 2, a machine house 1 rotatably supported at an upper end of the tower 2, and three rotor blades 3 held at an angle of 120 ° to each other and projecting from the machine house 1 in a substantially vertically extended plane of rotation Rotor blades 3 are rotatably supported with respect to a hub, not shown.
  • FIGS. 2 and 3 A single rotor blade 3 of the wind energy plant is shown in FIGS. 2 and 3.
  • the rotor blade 3 is elongated from a blade root 4 in the direction of a blade tip 5 and provides an erosion protection arrangement.
  • a shell 12 As a shaping component of the rotor blade, a shell 12 is provided, cf. FIG. 4.
  • the shell 12 defines an internal cavity 30.
  • stiffening elements 13 are arranged in the internal cavity 30.
  • the erosion protection arrangement comprises a blade tip guard 11 mounted on the blade tip 5, a front edge guard 7 elongated along a leading edge 6 of the rotor blade 3 driven during rotation, and a trailing edge guard 10 extending along a trailing edge 9 of the rotor blade 3 opposite the leading edge.
  • the leading edge guard 7 and the trailing edge guard 10 are provided immediately adjacent to the blade tip guard 11.
  • the leading edge protection 7 and the trailing edge protection 10 extend over approximately 35% of a length of the rotor blade 3 determined in a sheet longitudinal direction 8.
  • a cross-sectional geometry of the rotor blade 3 varies in the blade longitudinal direction 8.
  • the cross-sectional geometry of the rotor blade 3 is designed in aerodynamically optimized form.
  • leading edge protection 7 and / or the trailing edge protection 10 may extend over any part of the leading edge 6 and / or the trailing edge 9.
  • leading edge protector 7 and the trailing edge protector 10 may extend over the entire leading edge 6 and / or the entire trailing edge 9.
  • 10 recesses are formed on the shell 12 in the region of the front edge 6 for receiving the leading edge protection 7 and in the region of the trailing edge 9 for receiving the trailing edge protection, which are designed so that after setting the leading edge protection 7 and Schukantenschutzes 10 a smooth, aerodynamically shaped surface is formed.
  • a recess is formed on the shell 12 of the rotor blade 3 in the region of the blade tip 5, to which the blade tip guard 11 is attached in the same way.
  • the blade tip protector 11 is thus formed shell-like with a receiving opening for the shell 12th
  • not shown embodiment of the invention can be dispensed with the provision of the recesses.
  • individual components of the erosion protection arrangement can then be applied to the rotor blade 3 without recesses.
  • This variant is advantageous for example for a retrofit unit for existing systems.
  • FIGS. 5 and 6 show the leading edge protection 7 and the trailing edge protection 10 in cross section.
  • the leading edge protection 7 is formed sickle-shaped in cross section. Shape defining are in the assembled state of the shell 12 of the wing 3 facing the inside 17 and the inside 17 opposite the outside 18.
  • a in cross section of the leading edge protection 7 perpendicular to the inside 17 certain thickness or wall thickness varies over the cross section. It is minimal in a middle in the area of the free ends of the leading edge protection Maximum vertex area.
  • the thickness or wall thickness varies depending on the erosion load. For example, the thickness or wall thickness in the region of the vertex is between 0.4 mm and 2 mm. The thickness or wall thickness in the region of the vertex is preferably between 0.8 mm and 1 mm.
  • the trailing edge protector 10 is formed by two limbs extending substantially linearly and tapering in the region of the trailing edge 9, which are set at an acute angle to one another.
  • the thickness or material thickness of the trailing edge protection 10 varies as described above in cross section such that a minimum material thickness in the region of the free ends of the legs and a maximum material thickness in the region of the trailing edge 9 is realized.
  • Opposing inner surfaces of the legs define the inner side 28 applied to the shell 12 of the rotor blade 3.
  • the inner side 28 is formed on the rear edge protector 10 with a flat outer side 29.
  • the outer side 18 of the leading edge protector 7 and the outer side 29 of the rear edge protector 10 are aerodynamically advantageously shaped.
  • the cross-sectional geometry of the front edge protector 7 and the rear edge protector 10 is designed to be variable in the blade longitudinal direction 8 analogously to the geometry of the shell 12 of the rotor blade 3.
  • leading edge protection 7 shows by way of example an enlarged detail of a longitudinal section through the leading edge protection 7 of the erosion protection arrangement. It can be seen here that the leading edge protection 7 is designed in several parts or in segments.
  • the leading edge protection 7 comprises a plurality of protection segments, of which a first protection segment 14 and a second protection segment 15 are shown by way of example.
  • a surface-shaped connection section 19 is realized in the area of the inner side 17 of the second protection segment 15 facing the shell 12. Adjacent to the connecting portion 19 is on the inside 17 a cover sab section 20 is formed.
  • an offset is formed with respect to the connecting portion 19 which is geometrically matched to the thickness or material thickness of the adjacent first protective segment 14.
  • the protective segments 14, 15 of the leading edge protection 7 are glued to the shell 12 of the rotor blade 3 in the region of the connecting portion 19.
  • an adhesive layer 16 is provided between the shell 12 and the protective segments 14, 15 of the leading edge protection 7.
  • the protective segments 14, 15 touch each other. The contact is realized between the overlap sab section 20 of the second protection segment 15 and the outer side 18 of the first protection segment 14.
  • the second protection segment 15 protrudes for this scale or in the manner of a roof pan edge on the adjacent first protection segment 14.
  • the protection segments 14, 1 are then arranged partially overlapping, and it is a closed, seamless leading edge protection 7 by the plurality of protective segments 14, 15 is formed.
  • the rear edge protector 10 may also have protective segments arranged in an overlapping manner and designed to be resilient in relation to the thickness or wall thickness, the length and the hardness.
  • the representation of the protective segments 14, 15 of the leading edge protection 7 is insofar only exemplary.
  • the components of the erosion protection arrangement are formed as electroplated parts of a metallic alloy.
  • the metallic alloy is phosphorus-free realized with 70% to 100% nickel, 0% to 30 cobalt and saccharin.
  • a hardness (Vickers hardness HV) of the components of the erosion control arrangement is in the range of 200 HV 0.5 to 550 HV 0.5 (measuring time between ten and fifteen seconds).
  • the hardness of the individual components of the erosion protection arrangement can be different. In particular, it can be provided that the hardness of the blade tip guard 11 is greater than the hardness of the leading edge protection 7 and / or the trailing edge protection 10 by the addition of more cobalt.
  • the protective segments 14, 15 of the leading edge protection 7 and / or the Protection segments of the rear edge protection 10 are formed differently hard.
  • blade-protecting protective modules installed may have a greater hardness than protective segments, which are provided near the leaf roots.
  • the choice of hardness corresponds to the abrasion load, which is greater in the area of the blade tip 5 due to the dynamic conditions and in particular the rotational speed than in the blade root near areas of the rotor blade 3.
  • a length of the protective segments 14, 15 may be designed differently. For example, a certain along the leading edge 6 and the trailing edge 9 or in the sheet longitudinal direction 8 length of the protective segments 14, 15 are selected according to stress.
  • the length of the blade-near protective segments may be greater than the length of the blade-near protective segments. This takes into account the fact that the expansion or deformation of the rotor blade 3 in the region of the blade tip 5 is smaller than in the central region of the rotor blade 3 or in the region of the blade root 4 and that the hardness of the blade tip near components of erosion protection arrangement is particularly high.
  • the erosion protection arrangement serves to protect the rotor blade 3 against erosion in a seam-free or gapless manner.
  • the components of the erosion protection arrangement of an electrically conductive, metallic material systemimmanent protection against lightning strikes can be realized.
  • the metallic components of the erosion protection arrangement serve as receptors for lightning strikes.
  • a controlled discharge of the lightning takes place by an electrically conductive connection of the components of the erosion protection arrangement with an electrical conductor 27 provided in the cavity 30 of the rotor blade 3 in the region of an attachment point 21.
  • a presently realized by a countersunk screw connecting element 22 is provided for realizing the electrically conductive connection, which is guided by the blade tip guard 11, the adhesive layer 16 and the shell 12 of the rotor blade 3 into the cavity 30.
  • the electrical conductor 27 is then connected via a contact ring 25 with the connecting element 22.
  • the connection is made by means of a washer 24 provided between the shell 12 and the contact ring 25 and a nut 26 assigned to the contact ring 25 on a side opposite the washer 24 and secured to a threaded portion 23 of the connecting element 22.
  • the electrical conductor 27 is guided in the region of the cavity 30 to the blade root 4 and contacted there in a conventional manner electrically.
  • the attachment point 21 is realized in the area of the blade tip guard 5. It may in principle be provided to realize the attachment point 21 in the region of the leading edge protection 7 or of the trailing edge protection 10 or to provide a plurality of attachment points 21 distributed over the erosion protection arrangement, wherein the plurality of attachment points 21 each one guided by the erosion protection arrangement to the cavity 30 connecting element Provide 22 which is electrically connected to the conductor 27.
  • a plurality of attachment points 21 is provided, which are connected to separate electrical conductors 27, wherein the plurality of electrical conductors 27 are each guided in the cavity 30 to the blade root 4 and contacted there.
  • FIG. 10 shows a sectional representation through a first protection segment 14 and an adjacent, second protection segment 15. Similar to the embodiment of FIG. 7, the second protection segment 15 has a covering section 20 which covers a section 34 of the first protection segment 14 to be covered and attached to this. Along an edge 35 of the overlapping section 20, the first protective segment 14 has a protrusion 33, which points outwards from the shell 12 indicated only by the reference numeral 10 in FIG. Between the protrusion 33 and the edge 35, an elastic sealant 36 is arranged.
  • FIG. 11 shows a lightning receptor 31 which forms the blade tip 5 of the rotor blade 3 (not shown in FIG. 11). It consists of metal and has a fastening portion 37 for attachment to the shell 12 of the rotor blade 3. Adjacent to the lightning receptor 31 is a front edge protector 7, the blade tip-side protective segment 38 of which is received in a recess 32 (see FIG. 12) so that the outside of the front edge protector 7 is flush with the outside of the lightning receptor 31. A threaded connection 39 establishes an electrical connection between the lightning receptor 31 and the protection segment 38.

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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 d'éolienne comportant un bord d'attaque, un bord de fuite, une emplanture de pale, une extrémité de pale, une coquille qui détermine une forme aérodynamique de la pale de rotor, et un système de protection contre l'érosion qui comporte un élément de protection de bord d'attaque qui s'étend le long du bord d'attaque et qui est fixé sur la coquille. Cette invention est caractérisée en ce que l'élément de protection de bord d'attaque comporte plusieurs pièces et présente une pluralité de segments de protection individuels disposés de manière adjacente le long du bord d'attaque.
PCT/EP2017/054848 2017-03-02 2017-03-02 Pale de rotor d'éolienne comportant un système de protection contre l'érosion WO2018157929A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/054848 WO2018157929A1 (fr) 2017-03-02 2017-03-02 Pale de rotor d'éolienne comportant un système de protection contre l'érosion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/054848 WO2018157929A1 (fr) 2017-03-02 2017-03-02 Pale de rotor d'éolienne comportant un système de protection contre l'érosion

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WO2018157929A1 true WO2018157929A1 (fr) 2018-09-07

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111005839A (zh) * 2019-11-08 2020-04-14 明阳智慧能源集团股份公司 一种用于超极限风况风区的分段式风力发电机叶片
WO2021228851A1 (fr) * 2020-05-11 2021-11-18 Blade Dynamics Limited Protection de bord d'attaque pour une pale d'éolienne
EP3913213A1 (fr) * 2020-05-22 2021-11-24 Mitsubishi Heavy Industries, Ltd. Pale d'éolienne, éolienne et procédé de fabrication d'une pale d'éolienne
EP3919736A1 (fr) * 2020-06-01 2021-12-08 Mitsubishi Heavy Industries, Ltd. Pale de turbine éolienne et éolienne
WO2022029214A1 (fr) * 2020-08-05 2022-02-10 Blade Dynamics Limited Protection de bord d'attaque destinée à une pale d'éolienne
US11346320B2 (en) * 2018-05-31 2022-05-31 Vestas Wind Systems A/S Wind turbine blade leading edge pairing
US11441545B2 (en) * 2020-02-25 2022-09-13 General Electric Company Tungsten-based erosion-resistant leading edge protection cap for rotor blades
CN115143028A (zh) * 2021-03-31 2022-10-04 江苏金风科技有限公司 叶片、风力发电机组及叶片的成型方法
US11493021B2 (en) * 2020-05-22 2022-11-08 Mitsubishi Heavy Industries, Ltd. Windmill blade, windmill, and method of manufacturing windmill blade

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CN111005839A (zh) * 2019-11-08 2020-04-14 明阳智慧能源集团股份公司 一种用于超极限风况风区的分段式风力发电机叶片
CN115380159A (zh) * 2020-02-25 2022-11-22 通用电气公司 用于转子叶片的钨基耐腐蚀前缘保护盖
US11441545B2 (en) * 2020-02-25 2022-09-13 General Electric Company Tungsten-based erosion-resistant leading edge protection cap for rotor blades
WO2021228851A1 (fr) * 2020-05-11 2021-11-18 Blade Dynamics Limited Protection de bord d'attaque pour une pale d'éolienne
US12163502B2 (en) 2020-05-11 2024-12-10 Blade Dynamics Limited Leading edge protection for a wind turbine blade
EP3913213A1 (fr) * 2020-05-22 2021-11-24 Mitsubishi Heavy Industries, Ltd. Pale d'éolienne, éolienne et procédé de fabrication d'une pale d'éolienne
US11493021B2 (en) * 2020-05-22 2022-11-08 Mitsubishi Heavy Industries, Ltd. Windmill blade, windmill, and method of manufacturing windmill blade
US12018640B2 (en) 2020-05-22 2024-06-25 Mitsubishi Heavy Industries, Ltd. Windmill blade, windmill, and method of manufacturing windmill blade
EP3919736A1 (fr) * 2020-06-01 2021-12-08 Mitsubishi Heavy Industries, Ltd. Pale de turbine éolienne et éolienne
US11519390B2 (en) 2020-06-01 2022-12-06 Mitsubishi Heavy Industries, Ltd. Wind turbine blade including leading edge protector and wind turbine including the wind turbine blade
WO2022029214A1 (fr) * 2020-08-05 2022-02-10 Blade Dynamics Limited Protection de bord d'attaque destinée à une pale d'éolienne
CN115143028A (zh) * 2021-03-31 2022-10-04 江苏金风科技有限公司 叶片、风力发电机组及叶片的成型方法
CN115143028B (zh) * 2021-03-31 2023-12-08 江苏金风科技有限公司 叶片、风力发电机组及叶片的成型方法

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