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1. WO2022074215 - A METHOD OF MANUFACTURING A WIND TURBINE BLADE PART WITH A FLOW-ENHANCING MAT, FLOW ENHANCING MAT AND SPAR CAP OBTAINED BY SAID METHOD

Publication Number WO/2022/074215
Publication Date 14.04.2022
International Application No. PCT/EP2021/077901
International Filing Date 08.10.2021
IPC
B29C 70/54 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
54Component parts, details or accessories; Auxiliary operations
B29C 70/44 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
40Shaping or impregnating by compression
42for producing articles of definite length, i.e. discrete articles
44using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
B29D 99/00 2010.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
99Subject matter not provided for in other groups of this subclass
CPC
B29C 70/443
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
40Shaping or impregnating by compression
42for producing articles of definite length, i.e. discrete articles
44using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
443and impregnating by vacuum or injection
B29C 70/547
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
54Component parts, details or accessories; Auxiliary operations ; , e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
546Measures for feeding or distributing the matrix material in the reinforcing structure
547using channels or porous distribution layers incorporated in or associated with the product
B29D 99/0028
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
99Subject matter not provided for in other groups of this subclass
0025Producing blades or the like, e.g. blades for turbines, propellers, or wings
0028hollow blades
Applicants
  • LM WIND POWER A/S [DK]/[DK]
Inventors
  • BRINK, Morten, Bak
  • NIELSEN, Lars
  • JESPERSEN, Klavs
  • KOEFOED, Michael
  • HANSEN, Jens, Zangenberg
  • BARSLEV, Henrik
Agents
  • COPA COPENHAGEN PATENTS
Priority Data
2016044.609.10.2020GB
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) A METHOD OF MANUFACTURING A WIND TURBINE BLADE PART WITH A FLOW-ENHANCING MAT, FLOW ENHANCING MAT AND SPAR CAP OBTAINED BY SAID METHOD
(FR) PROCÉDÉ DE FABRICATION D'UNE PIÈCE DE PALE D'ÉOLIENNE AYANT UN MAT D'AMÉLIORATION D'ÉCOULEMENT, MAT D'AMÉLIORATION D'ÉCOULEMENT ET CAPUCHON DE LONGERON OBTENU PAR LEDIT PROCÉDÉ
Abstract
(EN) A method of manufacturing a wind turbine blade part, such as a spar cap (41, 45), by means of resin transfer moulding, preferably vacuum assisted resin transfer moulding, where fibre reinforcement material is impregnated with liquid resin in a mould cavity, wherein the mould cavity comprises a rigid mould part having a mould surface defining a surface of the wind turbine blade part is described. The method comprises the steps of: a) stacking a plurality of fibre reinforcement layers on the rigid mould part forming a fibre reinforcement stack, b) providing at least one flow-enhancing mat (70) in the fibre reinforcement stack, c) sealing a second mould part, e.g. a vacuum bag, against the rigid mould part to form the mould cavity, d) optionally evacuating the mould cavity, e) supplying a resin to the mould cavity, and f) curing or hardening the resin in order to form the wind turbine blade part, wherein the at least one flow- enhancing mat has a longitudinal direction with a longitudinal extent between a first longitudinal end and a second longitudinal end, and a transverse direction with transverse extent between a first side and a second side. The flow-enhancing mat comprises fibre rovings (72) arranged in parallel in a warp direction, and a plurality of individual monofilaments (73) that are arranged with a mutual inter-filament distance and oriented in a weft direction.
(FR) La présente invention concerne un procédé de fabrication d'une pièce de pale d'éolienne, telle qu'un capuchon de longeron (41, 45), à l'aide d'un moulage par transfert de résine, préférablement un moulage par transfert de résine sous vide, le matériau de renforcement fibreux étant imprégné de résine liquide dans une cavité de moule, la cavité de moule comprenant une partie de moule rigide ayant une surface de moule délimitant une surface de la pièce de pale d'éolienne. Le procédé comprend les étapes : a) d'empilement d'une pluralité de couches de renforcement fibreux sur la partie de moule rigide formant un empilement de renforcement fibreux, b) d'utilisation d'au moins un mat d'amélioration d'écoulement (70) dans l'empilement de renforcement fibreux, c) d'étanchéité d'une seconde partie de moule, par exemple un sac sous vide, contre la partie de moule rigide pour former la cavité de moule, d) éventuellement, d'évacuation de la cavité de moule, e) de distribution d'une résine à la cavité de moule, f) de réticulation ou durcissement de la résine afin de former la pièce de pale d'éolienne, ledit mat d'amélioration de l'écoulement ayant un sens longitudinal dont l'étendue longitudinale est entre une première extrémité longitudinale et une seconde extrémité longitudinale, et un sens transversal dont l'étendue transversale est entre un premier côté et un second côté. Le mat d'amélioration d'écoulement comprend des faisceaux de fibres (72) disposés en parallèle dans un sens de la chaîne, et une pluralité de mono-filaments individuels (73) qui sont disposés selon une distance inter-filament mutuelle et orientés selon un sens de la trame.
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