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    SPANWISE SEGMENT CONNECTION STRUCTURE FOR WIND TURBINE BLADES
    2.
    发明公开
    SPANWISE SEGMENT CONNECTION STRUCTURE FOR WIND TURBINE BLADES 审中-公开

    公开(公告)号：US20230407838A1

    公开(公告)日：2023-12-21

    申请号：US18225524

    申请日：2023-07-24

    Applicant: NEWTECH GROUP CO., LTD.

    Inventor： Kunlun TAN ,  Yelin LIU ,  Gaoyu BAI ,  Qiuping DU ,  Lei CAO ,  Shihai LIU ,  Xiugang WANG ,  Yichao CAO

    IPC: F03D1/06

    CPC classification number: F03D1/0677 ,  F05B2240/302

    Abstract: A spanwise segment connection structure for wind turbine blades includes a first segment and a second segment provided along the length direction of the wind turbine blade. At least one splicing surface is provided between the first and second segments; and a structural adhesive layer provided at the splicing surface for splicing and fixing the first and second segments; wherein the bonding length of the structural adhesive layer conforms to the inclination angle of the slope structure, and a biaxial fabric reinforcement layer is provided on the outer side of a skin interface of the splicing surface. The weight of the blade is reduced and the production cost is reduced through the bonding and fixing of the first and second segments. The splicing surface in form of the slope structure increases the bonding area and reduces the stress concentration on the splicing surface of the first and second segments.

    Pitch controlled wind turbine with blade connecting members
    5.
    发明授权
    Pitch controlled wind turbine with blade connecting members 有权

    公开(公告)号：US12066003B2

    公开(公告)日：2024-08-20

    申请号：US18257576

    申请日：2021-12-17

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Thomas S. Bjertrup Nielsen ,  Torben Juul Larsen ,  Mikkel Kiilerich Østerlund ,  Mohammed Fajar ,  Peter Bøttcher ,  Robert Rudolf

    IPC: F03D1/06

    CPC classification number: F03D1/066 ,  F03D1/0664 ,  F03D1/0677 ,  F05B2240/302

    Abstract: A pitch controlled wind turbine comprising a tower, a nacelle mounted on the tower, a hub mounted rotatably on the nacelle, and at least three wind turbine blades is disclosed. Each wind turbine blade extends between a root end connected to the hub via a pitch mechanism, and a tip end. The wind turbine further comprises at least three blade connecting members, each blade connecting member extending between a connection point on one wind turbine blade and a connection point on a neighboring wind turbine blade, the connection points being arranged at a distance from the root end and at a distance from the tip end of the wind turbine blade. The wind turbine further comprises at least three pre-tension members, each pre-tension member being connected to one of the blade connecting members and to a hub part, the pre-tension members thereby providing pre-tension in the blade connecting members.

    Hinged blade wind turbine with tilted axis and/or coned rotor
    7.
    发明授权
    Hinged blade wind turbine with tilted axis and/or coned rotor 有权

    公开(公告)号：US11898534B2

    公开(公告)日：2024-02-13

    申请号：US17776206

    申请日：2020-11-10

    Applicant: VESTAS WIND SYSTEMS

    Inventor： Thomas S. Bjertrup Nielsen ,  Søren Dalsgaard ,  Brian Jørgensen ,  Kim Hylling Sørensen

    IPC: F03D1/06 ,  F03D7/02

    CPC classification number: F03D1/0633 ,  F03D1/0677 ,  F05B2240/31

    Abstract: A wind turbine comprising one or more wind turbine blades arranged to perform pivot movements between a minimum pivot angle and a maximum pivot angle, each wind turbine blade extending between an outer tip and an inner tip, wherein each wind turbine blade has an outer portion extending between the hinge and the outer tip and having a first length, and inner portion extending between the hinge and the inner tip and having a second length, wherein a coning angle of the blade carrying structure is larger than zero and/or a tilt angle of the rotor axis is larger than zero, and wherein a horizontal distance from the tower at a vertical position defined by a position of the hinge at tower passage to a point of connection between the blade carrying structure and the hub is equal to or less than the second length.

    Wind turbine blade
    10.
    发明授权
    Wind turbine blade 有权

    公开(公告)号：US12000372B2

    公开(公告)日：2024-06-04

    申请号：US18013030

    申请日：2021-07-01

    Applicant: Vestas Wind Systems A/S

    Inventor： Preben Kjeldsen ,  Thomas Schmidt

    IPC: F03D1/06 ,  B29D99/00

    CPC classification number: F03D1/0675 ,  B29D99/0028 ,  F03D1/0641 ,  F03D1/0677 ,  F03D1/0681 ,  F03D1/0682 ,  F03D1/0684 ,  F03D1/0685 ,  F05B2220/705 ,  F05B2230/60 ,  F05B2240/21 ,  F05B2260/30

    Abstract: In a first aspect of the invention there is provided a wind turbine blade comprising a blade shell that extends in a spanwise direction from a root end to a tip end, and in a chordwise direction from a leading edge to a trailing edge. The blade shell comprises a spar cap formed from a plurality of substantially planar strips of reinforcing material, the strips being arranged in a plurality of stacks extending longitudinally in the spanwise direction and arranged side-by-side in the chordwise direction. In each stack an uppermost strip defines an upper surface of the stack, a lowermost strip defines a lower surface of the stack, and longitudinal edges of the stacked strips define side surfaces of the stack. The blade further comprises a retaining clip comprising a plurality of side-by-side substantially U-shaped sections. The U-shaped sections each comprise a pair of mutually-spaced side portions defining a stack-receiving region therebetween, and the side portions are joined by a bridging portion. At least some of the stacks are located in the stack-receiving regions of the retaining clip, such that the side portions of the U-shaped sections abut side surfaces of the stacks. Each U-shaped section of the retaining clip is inverted with respect to its neighbouring U-shaped section(s) such that the bridging portions of the respective U-shaped sections extend alternately across the upper and lower surfaces of the stacks in the chordwise direction.

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