WO2016048148A1 - Segmented wind turbine blade and bushing for use in a wind turbine blade - Google Patents

Segmented wind turbine blade and bushing for use in a wind turbine blade Download PDF

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Publication number
WO2016048148A1
WO2016048148A1 PCT/NL2015/050662 NL2015050662W WO2016048148A1 WO 2016048148 A1 WO2016048148 A1 WO 2016048148A1 NL 2015050662 W NL2015050662 W NL 2015050662W WO 2016048148 A1 WO2016048148 A1 WO 2016048148A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
bushing
array
bushings
space
Prior art date
Application number
PCT/NL2015/050662
Other languages
French (fr)
Inventor
Arnold TIMMER
Arjan BRONSVOORT
Original Assignee
Viventus Holding B.V.
E.J.H. Kuipers B.V.
Timmer Beheer B.V.
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 Viventus Holding B.V., E.J.H. Kuipers B.V., Timmer Beheer B.V. filed Critical Viventus Holding B.V.
Publication of WO2016048148A1 publication Critical patent/WO2016048148A1/en

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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
    • 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
    • F03D1/0608—Rotors characterised by their aerodynamic shape
    • F03D1/0633—Rotors characterised by their aerodynamic shape 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
    • F05B2240/301—Cross-section characteristics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • 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
    • F05B2240/302—Segmented or sectional 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 blade for a wind turbine comprising individual blade segments which in assembled state form the blade, wherein at least one set of two successive blade segments are mutually connected by means of bolts, wherein a first blade segment of the set is provided on a side along a peripheral edge thereof with a first array of first bushings, wherein each first bushing comprises an elongate first body, wherein the first body is provided with a hollow first space extending at least partially from a first outer end of the first body in longitudinal direction of the first body, and the hollow first space is at least partially provided with screw thread for attaching a bolt and the hollow first space of each first bushing is accessible from the side.
  • a blade according to the preamble is known in the field.
  • the known blade has the drawback that the first bushings are connected to each other in series before the blade segment is manufactured.
  • Each series consists of an array of three or more bushings which lie in one plane and are mutually connected by flat plastic parts.
  • a series is arranged permanently in the blade lamination during production of the blade segment.
  • Another drawback is that, because of the flat plastic parts between successive first bushings, a first bushing is not optimally connected to the blade segment. For the strength of the blade segment it is better not to interrupt the blade lamination between successive first bushings with a flat plastic part.
  • the blade according to the invention has for this purpose the feature that each first bushing is individually integrated into the blade segment during production of the blade segment. This technical measure enables optimal connection of each bushing to the blade segment, while the first array can follow the contour of the blade profile.
  • the flexibility of the blade according to the invention is greater here than the flexibility of the known blade.
  • a blade according to the preamble of claim 1 is known from the European patent EP2746574.
  • a second blade segment of the set is provided on a side and on the peripheral edge thereof with a second array of first bushings, wherein in assembled state of the set the two blade segments are mutually connected by means of a connecting part with an outer surface, wherein the outer surface substantially corresponds to an aerodynamic contour of the two blade segments and a channel comprising two side walls is arranged in the outer surface, wherein an array of first holes is arranged in a first side wall, wherein the position of each first hole corresponds to the position of a hollow first space of a first bushing of the first array, and an array of second holes is arranged in a second side wall, wherein the position of each second hole corresponds to a hollow first space of a first bushing of the second array and wherein each first and second hole is intended for passage of a bolt to a first bushing.
  • the two blade segments can be optimally connected by applying the first bushings in both blade segments of the set and by applying the connecting part.
  • first bushings in both blade segments the flexibility of the blade is moreover greater than if the first bushings were used only in a single blade segment.
  • At least one blade segment of the set is provided on a side along a peripheral edge thereof with an array of second bushings, wherein each second bushing is individually integrated into the peripheral edge during production of the blade segment, wherein the longitudinal side of the second bushing lies substantially parallel to a longitudinal side of the blade segment and each second bushing comprises an elongate second body manufactured from metal and intended for integration into the blade segment, and a flange connected to the outer end of the second body and intended for attachment to a first bushing.
  • the use of a connecting part can be dispensed with, thereby saving weight.
  • the flange preferably comprises on an outer end thereof an attaching surface which lies substantially perpendicularly of an axis of the second body and a third hole is arranged in the attaching surface for passage of a bolt, and the flange is formed such that a second space intended for receiving the bolt is located between the attaching surface and the outer end of the second body.
  • first bushings and second bushings are combined in the two blade segments.
  • the first blade segment of the set is provided here with a first array of first bushings and an array of second bushings
  • the second blade segment of the set is provided with a second array of first bushings and an array of second bushings.
  • the invention also relates to a second bushing for use in a blade according to the invention.
  • the second bushing according to the invention comprises an elongate second body manufactured preferably from metal and intended for integration into a blade segment, and a flange connected to the outer end of the second body, which flange comprises on an outer end thereof an attaching surface which lies substantially perpendicularly of an axis of the second body, and a third hole is arranged in the attaching surface for passage of a bolt, and the flange is formed such that a second space intended for receiving the bolt is located between the attaching surface and the outer end of the second body.
  • the second body is preferably provided with a plurality of preferably cylindrically symmetrical ridges formed such that an outer periphery of the second body comprises a plurality of trapezoidal shapes as seen in longitudinal direction.
  • the second body is hereby better secured in the blade segment during co- moulding.
  • Figure 1 shows a schematic view of a first preferred embodiment of a blade segment of a blade according to the invention
  • Figure 2 shows a schematic view of a first preferred embodiment of a first bushing as part of a blade according to the invention
  • Figure 3 shows a schematic view of a preferred embodiment of a connecting part as part of a blade according to the invention
  • Figure 4 shows a schematic view of a first preferred embodiment of a set of blade segments and an intermediate part of a blade according to the invention
  • Figure 5 shows a schematic view of a second preferred embodiment of a blade segment of a blade according to the invention
  • Figure 6 shows a schematic view of a second preferred embodiment of a second bushing as part of a blade according to the invention.
  • Figure 7 shows a schematic view of a second preferred embodiment of a set of blade segments and a connecting part of a blade according to the invention.
  • Figure 1 shows a schematic view of a blade segment 1 of a blade according to the invention in a first preferred embodiment.
  • Figure 2 shows a schematic view of a first bushing 20 as part of the blade according to the invention in a first preferred embodiment.
  • Figure 3 shows a schematic view of connecting part 10 as part of a blade according to the invention in a preferred embodiment.
  • Figure 4 shows a schematic view of a set of blade segments 1 , 100 and an intermediate part 10 in assembled state.
  • blade segments 1 , 100 form a blade of a wind turbine.
  • the first blade segment 1 is provided on a side 3 along a peripheral edge 4 thereof with a first array of first bushings 20.
  • Each first bushing 20 comprises an elongate first body 21 manufactured preferably from metal.
  • First body 21 is provided with a hollow first space 22 which extends at least partially, but preferably wholly, in longitudinal direction of first body 21.
  • a first outer end 23 forms an access opening to the hollow space of first body 21.
  • the hollow first space 22 is at least partially provided on the inner surface with screw thread for attaching a bolt 30.
  • each first bushing 20 is received individually integrated into blade segment 1.
  • the array of first bushings is preferably arranged during production of blade segment 1.
  • the orientation of each first bushing 20 is such that the longitudinal axis of each first bushing 20 lies substantially parallel to the longitudinal axis of blade segment 1 and the first outer end 23 is accessible from side 3.
  • Suitable methods for co-moulding or co-lamination of bushings during production of blades or segments of blades are known in the relevant field.
  • a second blade segment 100 is provided on a side and along a peripheral edge thereof with a second array of first bushings 20 in similar manner to first blade segment 1 .
  • the two successive blade segments 1 , 100 are connectable by means of a connecting part 10 to each other by means of bolts 30 which can be received in bushings 20.
  • Connecting part 10 is provided with an outer surface 11 , the shape of which corresponds to the aerodynamic shape of the two blade segments 1 , 100.
  • Present in outer surface 1 1 is a channel 12 comprising two upright (side) walls 13, 14.
  • a series of first holes 15 is arranged in the first side wall 13. In assembled state of connecting part 10 and blade segment 1 the position of each first hole 15 corresponds to the position of the first outer end 23 of a first bushing 20 in blade segment 1 .
  • a second series of second holes 16 is arranged in the second side wall 14.
  • each second hole 16 corresponds to the position of the first outer end 23 of a first bushing 20 of the second array in blade segment 100.
  • Each first hole 15 and each second hole 16 is intended for passage of a bolt 30 to a first bushing 20.
  • Connecting part 10 is preferably manufactured from metal.
  • FIG. 5 shows a schematic view of a second preferred embodiment of a blade segment 200 of a blade according to the invention.
  • a third blade segment 200 in figure 5 is provided on a side 203 and along the peripheral edge 204 thereof with an array of bushings, in this preferred embodiment with an array of second bushings 230.
  • FIG. 6 shows a schematic view of a preferred embodiment of a second bushing 230 according to the invention.
  • Second bushing 230 comprises an elongate second body 231 manufactured preferably from metal and intended for integration into a blade segment 200 in similar manner as described above with reference to bushings 20.
  • a flange 232 is mounted on the outer end of second body 231 , wherein flange part 232 comprises on an outer end thereof an attaching surface 233 which lies substantially perpendicularly of a longitudinal axis of second body 231.
  • Arranged in attaching surface 233 is a third hole 234 for passage of a bolt 30.
  • Flange part 232 is formed such that a second space 235 intended for
  • Figure 7 shows a set of a first blade segment 1 and a third blade segment 200 in assembled state.
  • the first blade segment 1 is provided with a first array of first bushings 20 and the third blade segment 200 is provided with an array of second bushings 230.
  • the set is connected without separate connecting part 10.
  • Flanges 232 are arranged adjacently and function as alternative connecting part.

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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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Abstract

The invention relates to a blade for a wind turbine comprising individual blade segments which in assembled state form the blade, wherein at least one set of two successive blade segments are mutually connected by means of bolts, wherein a first blade segment of the set is provided on a side along a peripheral edge thereof with a first array of first bushings, wherein each first bushing comprises an elongate first body, wherein the first body is provided with a hollow first space extending at least partially from a first outer end of the first body in longitudinal direction of the first body, and the hollow first space is at least partially provided with screw thread for attaching a bolt and the hollow first space of each first bushing is accessible from the side.

Description

SEGMENTED WIND TURBINE BLADE AND BUSHING FOR USE IN A WIND TURBINE BLADE
The invention relates to a blade for a wind turbine comprising individual blade segments which in assembled state form the blade, wherein at least one set of two successive blade segments are mutually connected by means of bolts, wherein a first blade segment of the set is provided on a side along a peripheral edge thereof with a first array of first bushings, wherein each first bushing comprises an elongate first body, wherein the first body is provided with a hollow first space extending at least partially from a first outer end of the first body in longitudinal direction of the first body, and the hollow first space is at least partially provided with screw thread for attaching a bolt and the hollow first space of each first bushing is accessible from the side.
A blade according to the preamble is known in the field.
The known blade has the drawback that the first bushings are connected to each other in series before the blade segment is manufactured. Each series consists of an array of three or more bushings which lie in one plane and are mutually connected by flat plastic parts. A series is arranged permanently in the blade lamination during production of the blade segment.
This has the drawback that an array of first bushings always follows an angular pattern and therefore does not follow the blade profile.
Another drawback is that, because of the flat plastic parts between successive first bushings, a first bushing is not optimally connected to the blade segment. For the strength of the blade segment it is better not to interrupt the blade lamination between successive first bushings with a flat plastic part.
In addition, the flat plastic parts are detrimental to the flexibility of the blade. It is an object of the invention to provide a blade for a wind turbine according to the preamble which obviates the above stated drawbacks.
The blade according to the invention has for this purpose the feature that each first bushing is individually integrated into the blade segment during production of the blade segment. This technical measure enables optimal connection of each bushing to the blade segment, while the first array can follow the contour of the blade profile. The flexibility of the blade according to the invention is greater here than the flexibility of the known blade.
A blade according to the preamble of claim 1 is known from the European patent EP2746574.
In a first preferred embodiment of the blade according to the invention a second blade segment of the set is provided on a side and on the peripheral edge thereof with a second array of first bushings, wherein in assembled state of the set the two blade segments are mutually connected by means of a connecting part with an outer surface, wherein the outer surface substantially corresponds to an aerodynamic contour of the two blade segments and a channel comprising two side walls is arranged in the outer surface, wherein an array of first holes is arranged in a first side wall, wherein the position of each first hole corresponds to the position of a hollow first space of a first bushing of the first array, and an array of second holes is arranged in a second side wall, wherein the position of each second hole corresponds to a hollow first space of a first bushing of the second array and wherein each first and second hole is intended for passage of a bolt to a first bushing.
The two blade segments can be optimally connected by applying the first bushings in both blade segments of the set and by applying the connecting part. By using first bushings in both blade segments the flexibility of the blade is moreover greater than if the first bushings were used only in a single blade segment.
In a second embodiment of the blade according to the invention at least one blade segment of the set is provided on a side along a peripheral edge thereof with an array of second bushings, wherein each second bushing is individually integrated into the peripheral edge during production of the blade segment, wherein the longitudinal side of the second bushing lies substantially parallel to a longitudinal side of the blade segment and each second bushing comprises an elongate second body manufactured from metal and intended for integration into the blade segment, and a flange connected to the outer end of the second body and intended for attachment to a first bushing. In this embodiment the use of a connecting part can be dispensed with, thereby saving weight.
The flange preferably comprises on an outer end thereof an attaching surface which lies substantially perpendicularly of an axis of the second body and a third hole is arranged in the attaching surface for passage of a bolt, and the flange is formed such that a second space intended for receiving the bolt is located between the attaching surface and the outer end of the second body.
In an alternative embodiment of the blade according to the invention the first bushings and second bushings are combined in the two blade segments. The first blade segment of the set is provided here with a first array of first bushings and an array of second bushings, and the second blade segment of the set is provided with a second array of first bushings and an array of second bushings. The invention also relates to a second bushing for use in a blade according to the invention. The second bushing according to the invention comprises an elongate second body manufactured preferably from metal and intended for integration into a blade segment, and a flange connected to the outer end of the second body, which flange comprises on an outer end thereof an attaching surface which lies substantially perpendicularly of an axis of the second body, and a third hole is arranged in the attaching surface for passage of a bolt, and the flange is formed such that a second space intended for receiving the bolt is located between the attaching surface and the outer end of the second body.
The second body is preferably provided with a plurality of preferably cylindrically symmetrical ridges formed such that an outer periphery of the second body comprises a plurality of trapezoidal shapes as seen in longitudinal direction. The second body is hereby better secured in the blade segment during co- moulding. The invention will now be described in more detail with reference to the figures.
Figure 1 shows a schematic view of a first preferred embodiment of a blade segment of a blade according to the invention;
Figure 2 shows a schematic view of a first preferred embodiment of a first bushing as part of a blade according to the invention;
Figure 3 shows a schematic view of a preferred embodiment of a connecting part as part of a blade according to the invention;
Figure 4 shows a schematic view of a first preferred embodiment of a set of blade segments and an intermediate part of a blade according to the invention;
Figure 5 shows a schematic view of a second preferred embodiment of a blade segment of a blade according to the invention;
Figure 6 shows a schematic view of a second preferred embodiment of a second bushing as part of a blade according to the invention; and
Figure 7 shows a schematic view of a second preferred embodiment of a set of blade segments and a connecting part of a blade according to the invention. Figure 1 shows a schematic view of a blade segment 1 of a blade according to the invention in a first preferred embodiment. Figure 2 shows a schematic view of a first bushing 20 as part of the blade according to the invention in a first preferred embodiment. Figure 3 shows a schematic view of connecting part 10 as part of a blade according to the invention in a preferred embodiment. Figure 4 shows a schematic view of a set of blade segments 1 , 100 and an intermediate part 10 in assembled state.
In assembled state blade segments 1 , 100 form a blade of a wind turbine. The first blade segment 1 is provided on a side 3 along a peripheral edge 4 thereof with a first array of first bushings 20. Each first bushing 20 comprises an elongate first body 21 manufactured preferably from metal. First body 21 is provided with a hollow first space 22 which extends at least partially, but preferably wholly, in longitudinal direction of first body 21. A first outer end 23 forms an access opening to the hollow space of first body 21. The hollow first space 22 is at least partially provided on the inner surface with screw thread for attaching a bolt 30.
According to the invention each first bushing 20 is received individually integrated into blade segment 1. The array of first bushings is preferably arranged during production of blade segment 1. The orientation of each first bushing 20 is such that the longitudinal axis of each first bushing 20 lies substantially parallel to the longitudinal axis of blade segment 1 and the first outer end 23 is accessible from side 3. Suitable methods for co-moulding or co-lamination of bushings during production of blades or segments of blades are known in the relevant field.
A second blade segment 100 is provided on a side and along a peripheral edge thereof with a second array of first bushings 20 in similar manner to first blade segment 1 .
The two successive blade segments 1 , 100 are connectable by means of a connecting part 10 to each other by means of bolts 30 which can be received in bushings 20. Connecting part 10 is provided with an outer surface 11 , the shape of which corresponds to the aerodynamic shape of the two blade segments 1 , 100. Present in outer surface 1 1 is a channel 12 comprising two upright (side) walls 13, 14. A series of first holes 15 is arranged in the first side wall 13. In assembled state of connecting part 10 and blade segment 1 the position of each first hole 15 corresponds to the position of the first outer end 23 of a first bushing 20 in blade segment 1 . A second series of second holes 16 is arranged in the second side wall 14. In assembled state of blade segment 100 and connecting part 10 the position of each second hole 16 corresponds to the position of the first outer end 23 of a first bushing 20 of the second array in blade segment 100. Each first hole 15 and each second hole 16 is intended for passage of a bolt 30 to a first bushing 20.
Connecting part 10 is preferably manufactured from metal.
A second preferred embodiment of a set of connectable blade segments is shown in figures 5-7. Figure 5 shows a schematic view of a second preferred embodiment of a blade segment 200 of a blade according to the invention.
In similar manner to first blade segment 1 , a third blade segment 200 in figure 5 is provided on a side 203 and along the peripheral edge 204 thereof with an array of bushings, in this preferred embodiment with an array of second bushings 230.
Figure 6 shows a schematic view of a preferred embodiment of a second bushing 230 according to the invention. Second bushing 230 comprises an elongate second body 231 manufactured preferably from metal and intended for integration into a blade segment 200 in similar manner as described above with reference to bushings 20. A flange 232 is mounted on the outer end of second body 231 , wherein flange part 232 comprises on an outer end thereof an attaching surface 233 which lies substantially perpendicularly of a longitudinal axis of second body 231. Arranged in attaching surface 233 is a third hole 234 for passage of a bolt 30. Flange part 232 is formed such that a second space 235 intended for
accommodating the bolt (30) lies between attaching surface 233 and the outer end of second body 231 .
Figure 7 shows a set of a first blade segment 1 and a third blade segment 200 in assembled state. The first blade segment 1 is provided with a first array of first bushings 20 and the third blade segment 200 is provided with an array of second bushings 230. The set is connected without separate connecting part 10. Flanges 232 are arranged adjacently and function as alternative connecting part.
The invention is of course not limited to the described and shown preferred embodiment, but extends to any embodiment falling within the scope of protection as defined in the claims and as seen in the light of the foregoing description and accompanying drawings.

Claims

1 ). Blade for a wind turbine comprising individual blade segments (1 , 100, 200) which in assembled state form the blade, wherein at least one set of two successive blade segments (1 , 100, 200) are mutually connected by means of bolts (30), wherein a first blade segment (1 ) of the set is provided on a side (3) along a peripheral edge (4) thereof with a first array of first bushings (20), wherein each first bushing (20) comprises an elongate first body (21 ), wherein the first body (21 ) is provided with a hollow first space (22) extending at least partially from a first outer end (23) of the first body (21 ) in longitudinal direction of the first body (21 ), and the hollow first space (22) is at least partially provided with screw thread for attaching a bolt (30) and the hollow first space (22) of each first bushing (20) is accessible from the side (3), wherein each first bushing (20) is individually integrated into the blade segment (1 ) during production of the blade segment, characterized in that at least one blade segment (200) of the set is provided on a side (203) along a peripheral edge (204) thereof with an array of second bushings (230), wherein each second bushing (230) is individually integrated into the peripheral edge (204) during production of the blade segment (200), wherein the longitudinal side of the second bushing (230) lies substantially parallel to a longitudinal side of the blade segment (200) and each second bushing (230) comprises an elongate second body (231 ) manufactured preferably from metal and intended for integration into the blade segment (200), and a flange (232) connected to the outer end of the second body (231 ) and intended for attachment to a first bushing (20). 2). Blade as claimed in claim 1 , characterized in that the blade is provided with one or more connecting parts and a second blade segment (100) of the set is provided on a side (103) and along the peripheral edge (104) thereof with a second array of first bushings (20), wherein the two blade segments (1 , 100) are mutually connectable by means of a connecting part (10) with an outer surface (1 1 ), wherein the outer surface (1 1 ) substantially corresponds to an aerodynamic contour of the two blade segments (1 , 100) and a channel (12) comprising two side walls (13, 14) is arranged in the outer surface (1 1 ), wherein an array of first holes (15) is arranged in a first side wall (13), wherein the position of each first hole (15) corresponds to a position of a hollow first space (22) of a first bushing (20) of the first array, and an array of second holes (16) is arranged in a second side wall (14), wherein the position of each second hole (16) corresponds to the position of a hollow first space (22) of a first bushing (20) of the second array and wherein each first (15) and second hole (16) is intended for passage of a bolt (30) to a first bushing (20). 3). Blade as claimed in claim 1 or 2, wherein the flange (232) comprises on an outer end thereof an attaching surface (233) which lies substantially perpendicularly of an axis of the second body (231 ) and a third hole (234) is arranged in the attaching surface (233) for passage of a bolt (30), and the flange (232) is formed such that a second space (235) intended for receiving the bolt (30) is located between the attaching surface (233) and the outer end of the second body (231 ).
4) . Blade as claimed in any of the foregoing claims, wherein each blade segment of the set is provided with a first array of first bushings (20) and an array of second bushings (230).
5) . Second bushing (230) for use in a blade as claimed in claim 1 , 2, 3 or 4, comprising an elongate second body (231 ) manufactured preferably from metal and intended for integration into a blade segment (1 , 100, 200), and a flange (232) connected to the outer end of the second body (231 ), which flange (232) comprises on an outer end thereof an attaching surface (233) which lies substantially perpendicularly of an axis of the second body (231 ), and a third hole (234) is arranged in the attaching surface (233) for passage of a bolt (30), and the flange (232) is formed such that a second space (235) intended for receiving the bolt (30) is located between the attaching surface (233) and the outer end of the second body (231 ).
6) . Second bushing (230) as claimed in claim 5, wherein the second body (231 ) is provided with a plurality of preferably cylindrically symmetrical ridges formed such that an outer periphery of the second body comprises a plurality of trapezoidal shapes as seen in longitudinal direction.
PCT/NL2015/050662 2014-09-23 2015-09-23 Segmented wind turbine blade and bushing for use in a wind turbine blade WO2016048148A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2013516A NL2013516B1 (en) 2014-09-23 2014-09-23 Segmented wind turbine blade and bushing for use in a wind turbine blade.
NL2013516 2014-09-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089568A (en) * 2016-07-14 2016-11-09 株洲时代新材料科技股份有限公司 Stagewise wind electricity blade and assembly method thereof
CN106368912A (en) * 2016-10-18 2017-02-01 清华大学 Large wind power sectioned blade with unit module combined butt joint
CN109185043A (en) * 2018-08-06 2019-01-11 中材科技（邯郸）风电叶片有限公司 Wind electricity blade and production technology

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1950414A2 (en) * 2007-01-23 2008-07-30 Fuji Jukogyo Kabushiki Kaisha Separable blade for wind turbine
WO2011070137A1 (en) * 2009-12-11 2011-06-16 Vestas Wind Systems A/S A sectional blade
CN102606419A (en) * 2012-04-16 2012-07-25 国电联合动力技术有限公司 Sectional type wind wheel blade and connection mechanism and mounting method thereof
US20130108464A1 (en) * 2009-08-07 2013-05-02 Gurit (Uk) Ltd. Wind or tidal turbine blade having an attachment
WO2013083451A1 (en) * 2011-12-08 2013-06-13 Wobben Properties Gmbh Rotor blade and connecting device
EP2746574A2 (en) * 2012-12-21 2014-06-25 General Electric Company Joints for connecting blade segments of a wind turbine rotor blade

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1950414A2 (en) * 2007-01-23 2008-07-30 Fuji Jukogyo Kabushiki Kaisha Separable blade for wind turbine
US20130108464A1 (en) * 2009-08-07 2013-05-02 Gurit (Uk) Ltd. Wind or tidal turbine blade having an attachment
WO2011070137A1 (en) * 2009-12-11 2011-06-16 Vestas Wind Systems A/S A sectional blade
WO2013083451A1 (en) * 2011-12-08 2013-06-13 Wobben Properties Gmbh Rotor blade and connecting device
CN102606419A (en) * 2012-04-16 2012-07-25 国电联合动力技术有限公司 Sectional type wind wheel blade and connection mechanism and mounting method thereof
EP2746574A2 (en) * 2012-12-21 2014-06-25 General Electric Company Joints for connecting blade segments of a wind turbine rotor blade

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089568A (en) * 2016-07-14 2016-11-09 株洲时代新材料科技股份有限公司 Stagewise wind electricity blade and assembly method thereof
CN106368912A (en) * 2016-10-18 2017-02-01 清华大学 Large wind power sectioned blade with unit module combined butt joint
CN109185043A (en) * 2018-08-06 2019-01-11 中材科技（邯郸）风电叶片有限公司 Wind electricity blade and production technology

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