公开(公告)号：US10946598B2

公开(公告)日：2021-03-16

申请号：US16306690

申请日：2017-06-13

Applicant: LM WP PATENT HOLDING A/S

Inventor： Lars Nielsen

IPC: B29C70/48 ,  B29C70/54 ,  B29C70/44 ,  F03D1/06 ,  B29D99/00 ,  B29L31/08 ,  B29K105/08 ,  B29K307/04

Abstract: In a method for manufacturing a wind turbine blade half shell, a preformed and cured aerodynamic blade shell member 42 of a fibre reinforced resin is provided. A primarily uniaxial fibre material 66 comprising carbon fibre is laid up on a longitudinal inner area 50 of the preformed shell member 42 and then infused with a resin by vacuum-assisted resin transfer moulding (VARTM), where a longitudinal resin inlet channel 80,82 is arranged on a first lateral side 46 and a vacuum channel 86,88 is arranged on a second lateral side 48 of the laid-up fibre material, and the resin is infused in transverse direction from the first to the second lateral side 46,48.

公开(公告)号：US10584684B2

公开(公告)日：2020-03-10

申请号：US16064758

申请日：2016-12-19

Applicant: LM WP PATENT HOLDING A/S

Inventor： Lars Nielsen ,  Klavs Jespersen

IPC: F03D1/06 ,  F03D80/30

Abstract: A wind turbine blade, extending longitudinally root end to tip end, having a load carrying structure, a shell body and a lightning protection system is described. The load carrying structure is fiber-reinforced polymer in a plurality of stacked layers comprising electrically conductive fibers. The lightning protection system comprises a lightning receptor arranged freely accessible in or on the shell body and a lightning down-conductor electrically connected to the lightning receptor and is configured to be electrically connected to a ground connection. The blade further comprises a potential equalisation system providing a potential equalising connection between a number of the electrically conductive fibers of the load carrying structure and the lightning protection system. The system comprises a dissipating element made of an electrically conductive material which in turn comprises at least one transverse connector arranged to extend transverse through a thickness of the stacked fiber layers and configured to dissipate.

公开(公告)号：US10723089B2

公开(公告)日：2020-07-28

申请号：US16064818

申请日：2016-12-19

Applicant: LM WP PATENT HOLDING A/S

Inventor： Lars Nielsen ,  Klavs Jespersen

IPC: B29C70/54 ,  B29C70/88 ,  B29C70/44 ,  F03D80/30 ,  B29C70/34 ,  F03D1/06 ,  B29L31/08 ,  B29C70/48 ,  B29K307/04

Abstract: A method of manufacturing a composite laminate structure of a wind turbine blade part is performed by resin transfer moulding. The fibre-reinforcement material is impregnated with liquid resin in a mould cavity which includes a rigid mould part having a mould surface defining a surface of the wind turbine blade part. The method includes alternately stacking on the rigid mould part: i) a number of fibre-reinforcement layers including electrically conductive fibres and ii) a flow strip layer in form of a layer of flow strips having a strip width and which are arranged so as to form voids having a void width between two juxtaposed strips. The method includes sealing a second mould part against the rigid mould part in order to form the mould cavity, optionally evacuating the mould cavity, supplying a resin to the mould cavity, and curing the resin to form the composite laminate structure.

公开(公告)号：US10690113B2

公开(公告)日：2020-06-23

申请号：US16064782

申请日：2016-12-19

Applicant: LM WP PATENT HOLDING A/S

Inventor： Lars Nielsen ,  Klavs Jespersen

IPC: F03D1/06 ,  B29C65/00 ,  B29D99/00 ,  B29L31/08

Abstract: The present disclosure relates to a wind turbine blade. The wind turbine blade comprises a load carrying structure made of a fibre-reinforced polymer material. The load carrying structure comprises a plurality of stacked fibre layers or fibre mats in a thickness of the load carrying structure. The plurality of said stacked fibre layers or fibre mats are made of hybrid material comprising both carbon fibres and glass fibres and having a carbon fibre ratio. The carbon fibre ratio is defined as a volume of the carbon fibres divided by a total volume of the glass fibres and carbon fibres. At least a number of said stacked fibre layers or fibre mats have different carbon fibre ratios such that the carbon fibre ratio of fibre material varies through the thickness of the load carrying structure.

公开(公告)号：US10913230B2

公开(公告)日：2021-02-09

申请号：US16067941

申请日：2017-01-03

Applicant: LM WP PATENT HOLDING A/S

Inventor： Lars Nielsen

IPC: B29D99/00 ,  B29C70/54 ,  B29L31/08

Abstract: The present invention relates to a method of molding a shell part of a wind turbine blade. The method involves attaching one or more fastening elements (63) onto a molding surface, each fastening element (63) comprising a support layer (64) with an upper face (66) and a lower face (68), and one or more spikes protruding from the upper face of the support layer (64). Fiber plies are then successively laid out into the molding cavity (78) such that each ply is anchored to one or more of said spikes. The fiber plies are then contacted with a polymer material to produce a shell part comprising a fiber reinforced composite material. The invention also relates to a shell part of a wind turbine blade obtainable by the method and to a fastening element for use in said method.

公开(公告)号：US10399275B2

公开(公告)日：2019-09-03

申请号：US15307253

申请日：2015-04-29

Applicant: LM WP PATENT HOLDING A/S

Inventor： Lars Nielsen ,  Jesper Hasselbalch Garm

IPC: B29C65/78 ,  B29C65/48 ,  B29C65/00 ,  F03D1/06 ,  B29L31/00 ,  B29L31/08

Abstract: A system and method for manufacturing at least a portion of a wind turbine blade is described. The invention relates to a method for ensuring a minimum bond line height between wind turbine blade components, through the use of adhesive spacer elements. The adhesive spacer elements are positioned between the blade components prior to bonding, and act to define a buffer or space between the bonding surfaces of the respective blade components, such that the adhesive bond line height between components can be effectively guaranteed without the need for accurate alignment and positioning techniques.

公开(公告)号：US10179439B2

公开(公告)日：2019-01-15

申请号：US15113157

申请日：2015-01-30

Applicant: LM WP PATENT HOLDING A/S

Inventor： Rasmus C Ostergaard ,  Lars Nielsen ,  Klavs Jespersen

IPC: B29C70/68 ,  B29C70/34 ,  B29C70/44 ,  B29D99/00 ,  F03D1/06 ,  B29C70/48 ,  B29L31/08 ,  B29K31/00 ,  B29K105/08 ,  B29K307/04 ,  B29K309/08

Abstract: A method of manufacturing a portion of a wind turbine blade is described. The method comprising the steps of: laying up a primary fiber material in a mold; infusing said primary fiber material with a primary resin; substantially curing said primary resin in said primary fiber material to form a cured blade element; laying up a secondary fiber material on top of at least a portion of said cured blade element; infusing said secondary fiber material with a secondary resin different to said primary resin, wherein said secondary resin has a higher strength level than said primary resin; and curing said secondary resin in said secondary fiber material to form an integrated reinforced section on said cured blade element.

公开(公告)号：US09599094B2

公开(公告)日：2017-03-21

申请号：US14649845

申请日：2013-12-18

Applicant: LM WP PATENT HOLDING A/S

Inventor： Martin Dahl ,  Lars Nielsen

IPC: B29C70/44 ,  B29C70/48 ,  B29C70/54 ,  B29C33/30 ,  F03D1/06 ,  B29C70/34 ,  B29C33/60 ,  B29D99/00 ,  F03D1/00 ,  B29K105/08 ,  B29K63/00 ,  B29K307/04 ,  B29L31/08 ,  B29K67/00 ,  B29K309/08

CPC classification number: F03D1/0675 ,  B29C33/306 ,  B29C33/60 ,  B29C70/342 ,  B29C70/443 ,  B29C70/48 ,  B29C70/541 ,  B29C70/543 ,  B29D99/0028 ,  B29K2063/00 ,  B29K2067/00 ,  B29K2105/08 ,  B29K2105/0872 ,  B29K2307/04 ,  B29K2309/08 ,  B29L2031/085 ,  F03D13/10 ,  Y02E10/721 ,  Y02P70/523

Abstract: A method of manufacturing an aerodynamic shell part for a wind turbine blade is described. The aerodynamic she part comprises a recess for arrangement and connection of a spar cap within said recess. The method comprising the steps of: a) providing a first mold part having a first forming surface that defines a part of an exterior of the aerodynamic shell part, b) laying up fiber-reinforcement material and optionally also sandwich core material in the first mold on the first forming surface, c) arranging one or more inserts having an exterior shape corresponding to at least sides of the recess of the aerodynamic shell part, d) supplying resin to said fiber-reinforcement material and optional sandwich core material, e) curing or preconsolidating the resin, and f) removing the one or more inserts.

公开(公告)号：US10782128B2

公开(公告)日：2020-09-22

申请号：US16064671

申请日：2016-12-19

Applicant: LM WP PATENT HOLDING A/S

Inventor： Lars Nielsen ,  Klavs Jespersen

IPC: B32B41/00 ,  G01B15/00 ,  G01N23/201 ,  G01N23/02 ,  B29C51/14 ,  G01N23/205 ,  B29C70/30 ,  B29C70/54 ,  B29K307/04 ,  B29K309/08

Abstract: The present disclosure relates to a method for detecting a fibre misalignment in an elongated structure, such as a wind turbine blade component. The elongated structure has a length along a longitudinal direction and comprises a plurality of stacked reinforcing fibre layers. The plurality of fibre layers comprises fibres having an orientation aligned, unidirectionally, substantially in the longitudinal direction. The method comprises scanning the elongated structure along at least a part of the length by emitting an x-ray beam in an angle compared to the orientation of the fibres. The method comprises detecting scattered rays, and determining an intensity of the detected scattered rays. The method comprises estimating a size of the fibre misalignment based on the determined intensity.

公开(公告)号：US10723090B2

公开(公告)日：2020-07-28

申请号：US16078712

申请日：2017-02-21

Applicant: LM WP PATENT HOLDING A/S

Inventor： Lars Nielsen ,  Klavs Jespersen

IPC: B29C70/54 ,  B29C70/48 ,  B29C70/88 ,  B29C70/44 ,  F03D80/30 ,  B32B3/26 ,  B32B5/02 ,  B32B5/08 ,  B32B5/12 ,  B32B27/08 ,  B23B27/12 ,  F03D1/06 ,  B29L31/08 ,  B29K307/04 ,  B32B27/12 ,  B29K309/08

Abstract: The present disclosure provides a method of manufacturing a composite laminate structure of a wind turbine blade part by means of resin transfer moulding, preferably vacuum-assisted resin transfer moulding. In a resin transfer moulding, fibre-reinforcement material is impregnated with liquid resin in a mould cavity. The mould cavity comprises rigid mould part having a mould surface defining a surface of the wind turbine blade part.The method comprises alternately stacking on the rigid mould part: i. a number of unidirectional fibre-reinforcement layers comprising electrically conductive fibres, such as carbon fibres, and ii. a flow-enhancing fabric layer for enhancing a flow of the resin during infusion of the fibre-reinforcement layers, the flow-enhancing fabric layer comprising an open-structured layer made of a first material, wherein the flow-enhancing fabric layer comprises a longitudinal direction and a transverse direction, The flow-enhancing fabric layer further comprises filaments or bundles of fibres made of a second material, which is an electrically conductive material and which are arranged and configured to provide a conductive path from first electrically conductive fibres of a first fibre-reinforcement layer on a first side of the flow-enhancing layer to second electrically conductive fibres of a second fibre-reinforcement layer on a second side of the flow-enhancing layer.