公开(公告)号：US20230330953A1

公开(公告)日：2023-10-19

申请号：US18026908

申请日：2021-10-05

Applicant: LM WIND POWER A/S ,  BLADE DYNAMICS LIMITED

Inventor： Jeppe Bjørn JØRGENSEN ,  Ole NIELSEN ,  Rama RAZEGHI

IPC: B29C70/86 ,  B29C70/48 ,  B29C70/20

CPC classification number: B29C70/86 ,  B29C70/48 ,  B29C70/205 ,  B29K2105/0881

Abstract: A precured fibrous composite strip for a load-carrying structure for a wind turbine blade has a first longitudinal end and a second longitudinal end, a first side and a second side with a width defined as the distance between the first side and the second side, and an upper surface and a lower surface with a thickness defined as the distance between the upper surface and the lower surface. The strip includes a taper region with a taper length at the first longitudinal end. The taper region tapers in thickness towards the first longitudinal end. The taper region includes a first taper section proximal to the first longitudinal end and having a first average taper angle, a third taper section distal to the first longitudinal end and having a third average taper angle, and a second taper section between the first taper section and the third taper section.

公开(公告)号：US20240271596A1

公开(公告)日：2024-08-15

申请号：US18689193

申请日：2022-12-06

Applicant: LM WIND POWER A/S

Inventor： Jeppe Bjørn JØRGENSEN ,  Ole NIELSEN

IPC: F03D1/06

CPC classification number: F03D1/0681 ,  F05B2230/23 ,  F05B2280/6003

Abstract: The present invention relates to a pre-manufactured spar cap for a wind turbine blade comprising a spar cap structure comprising a plurality of fibre-reinforced composite elements arranged in stacked rows and separated by interlayers and a first and/or second damage tolerant cover sheet. The first and/or second damage tolerant cover sheets each comprises a first damage tolerant fibre layer and a second damage tolerant fibre layer attached to each other in attachment areas, wherein the attachments areas are separated from each other by a distance between 1-5 cm. Furthermore, the spar cap structure and the first and/or second damager tolerant cover sheet are embedded in a first cured resin. The present invention also relates to a damage tolerant cover sheet as such, as well as a wind turbine comprising a first and/or second damage tolerant cover sheet. Also, the present invention relates to methods of manufacturing a premanufactured spar cap, a wind turbine shell member and a wind turbine blade comprising the first and/or second damage tolerant cover sheet.

公开(公告)号：US20240052802A1

公开(公告)日：2024-02-15

申请号：US18271076

申请日：2022-02-24

Applicant: LM WIND POWER A/S

Inventor： Jeppe Bjørn JØRGENSEN ,  Ole NIELSEN

IPC: F03D1/06 ,  B29D99/00

CPC classification number: F03D1/0682 ,  B29D99/0028 ,  F05B2280/6003 ,  F05B2230/50 ,  B29K2105/0881

Abstract: The present invention relates to a pre-impregnated fibre sheet extending in a longitudinal direction and in a transverse direction and comprising a first fibre layer forming part of an upper surface of the pre-impregnated fibre sheet and a second fibre layer forming part of a lower surface of the pre-impregnated fibre sheet, wherein the first fibre layer is pre-impregnated with an adhesion promotor. The present invention further relates to methods of manufacturing a blade shell member or wind turbine blade comprising a pre-manufactured spar cap and a number of pre-impregnated fibre sheets arranged to obtain an improved adherence between the blade shell and pre-manufactured spar cap, particularly when the pre-manufactured spar cap is resin infused with vinyl ester or epoxy resin and the blade mould is resin infused with polyester.

公开(公告)号：US20240117792A1

公开(公告)日：2024-04-11

申请号：US18285685

申请日：2022-05-03

Applicant: LM WIND POWER A/S

Inventor： Rama RAZEGHI ,  Jeppe Bjørn JØRGENSEN ,  Paul TODD ,  Boas EIRIKKSSON

IPC: F03D80/30 ,  F03D1/06

CPC classification number: F03D80/301 ,  F03D1/0675 ,  F05B2230/50 ,  F05B2280/6013

Abstract: A main laminate for a wind turbine blade, a wind turbine blade, and methods for manufacturing such components are disclosed. The main laminate extends along a longitudinal direction and comprising a connector element comprising a conductive mesh portion and an elongated connector part, wherein a connector part length is longer than an edge distance between the conductive mesh portion and a first edge, and wherein a secondary connector portion of the elongated connector part is bendable around a bend axis substantially parallel to the longitudinal direction.