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公开(公告)号：US11879428B2
公开(公告)日：2024-01-23
申请号：US17919647
申请日：2021-04-22
IPC分类号： F03D1/06
CPC分类号： F03D1/0675 , F03D1/065 , F05B2280/6003
摘要： A wind turbine blade includes an elongated blade body extending from a root to a tip with a trailing edge, whereby at least one beam-like reinforcement means is integrated in the blade body adjacent to the trailing edge for reinforcing the region of the trailing edge, with the reinforcement means extending partly over the length of the blade body, wherein the reinforcement means is a pre-casted carbon beam including carbon fibers.
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公开(公告)号：US11454208B2
公开(公告)日：2022-09-27
申请号：US16219990
申请日：2018-12-14
摘要： A pultruded fibrous composite strip, a spar cap made from such strips, a wind turbine rotor blade having such a spar cap and a method for making a spar cap from such strips is provided. The strip is stacked with similar strips to form the spar cap. The strip has a substantially constant cross-section defined by first and second mutually opposed and longitudinally extending sides, and by first and second longitudinal edges. The first and the second sides include first and second abutment surfaces, respectively. The first and the second abutment surfaces are non-planar. When the strip is stacked with similar strips, and subsequently integrated within shell of the wind turbine blade, the non-planar profile of the strips at least partially obviates formation of resin rich pockets at the interface of the spar cap and the shell and/or stress concentration between the edges of the spar cap and the shell.
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3.发明申请公开(公告)号：US20190195191A1
公开(公告)日：2019-06-27
申请号：US16219990
申请日：2018-12-14
CPC分类号： F03D1/0675 , B29C70/48 , B29C70/52 , B29D99/0028 , B29L2031/085 , F05B2230/20 , F05B2240/301
摘要： A pultruded fibrous composite strip, a spar cap made from such strips, a wind turbine rotor blade having such a spar cap and a method for making a spar cap from such strips is provided. The strip is stacked with similar strips to form the spar cap. The strip has a substantially constant cross-section defined by first and second mutually opposed and longitudinally extending sides, and by first and second longitudinal edges. The first and the second sides include first and second abutment surfaces, respectively. The first and the second abutment surfaces are non-planar. When the strip is stacked with similar strips, and subsequently integrated within shell of the wind turbine blade, the non-planar profile of the strips at least partially obviates formation of resin rich pockets at the interface of the spar cap and the shell and/or stress concentration between the edges of the spar cap and the shell.
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公开(公告)号：US11549482B2
公开(公告)日：2023-01-10
申请号：US16825164
申请日：2020-03-20
IPC分类号： F03D1/06 , B29D99/00 , F03D80/30 , B29K309/08 , B29L31/08
摘要： A wind turbine blade of a wind turbine, the wind turbine blade including a shell and a spar having at least one spar cap is provided. At least one of the at least one spar cap includes at least two longitudinal support structure elements, whereby at least two of the at least two longitudinal support structure elements are arranged adjacent to one another in a longitudinal direction of the wind turbine blade and at least one longitudinal support structure includes carbon fiber-reinforced plastic and at least one other longitudinal support structure includes at least one fiber-reinforced plastic different from carbon fiber-reinforced plastic.
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5.发明申请公开(公告)号：US20190195190A1
公开(公告)日：2019-06-27
申请号：US16218631
申请日：2018-12-13
CPC分类号： F03D1/0675 , B29C70/52 , B29D99/0028 , B29L2031/085 , F05B2230/20 , F05B2240/301 , F05B2250/184
摘要： A pultruded fibrous composite strip, a spar cap made from such strips, a wind turbine rotor blade having such a spar cap and a method for making a spar cap from such strips are provided. The strip is stacked with similar strips to form the spar cap. The strip has a substantially constant cross-section defined by first and second mutually opposed and longitudinally extending sides, and by first and second longitudinal edges. The first and the second sides include first and second abutment surfaces, respectively. The first and/or the second abutment surfaces has corrugated profile such that a plurality of longitudinally extending grooves are defined on the abutment surface having the corrugated profile. When the strip is stacked with similar strips, and subsequently resin is infused, the grooves on the abutment surface having the corrugated profile facilitate transfer and flow of the resin into spaces between the stacked strips.
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公开(公告)号：US20230167799A1
公开(公告)日：2023-06-01
申请号：US17919647
申请日：2021-04-22
IPC分类号： F03D1/06
CPC分类号： F03D1/0675 , F05B2280/6003
摘要： A wind turbine includes an elongated blade body extending from a root to a tip with a trailing edge, whereby at least one beam-like reinforcement means is integrated in the blade body adjacent to the trailing edge for reinforcing the region of the trailing edge, with the reinforcement means extending partly over the length of the blade body, wherein the reinforcement means is a pre-casted carbon beam including carbon fibers.
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公开(公告)号：US20220228553A1
公开(公告)日：2022-07-21
申请号：US17611932
申请日：2020-05-15
摘要： A method for manufacturing a wind turbine blade, comprising the steps of: arranging (S2, S3) a joining portion (8) comprising a fibre lay-up inside adjacent blade sections, covering (S4) the joining portion (8) and the adjacent blade sections at least partially with a vacuum bag, and applying vacuum to a space (54) covered by the vacuum bag (19, 38), infusing at least the fibre lay-up (12, 13, 14, 15, 16, 17) with a resin (43) and curing (S5) the resin (43) to obtain a cured joining portion (44) joining the blade sections (20, 24) inside. A light-weight and at the same time strong blade section joint is provided. In particular, the strength of this laminate joint formed by vacuum infusion is comparable to the strength of the pristine laminate. Compared to a connection using an adhesive, the laminate joint formed by vacuum infusion provides a lighter and stronger blade section joint, in particular, a better weight-to-strength performance.
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8.发明授权公开(公告)号：US11231008B2
公开(公告)日：2022-01-25
申请号：US16218631
申请日：2018-12-13
摘要： A pultruded fibrous composite strip, a spar cap made from such strips, a wind turbine rotor blade having such a spar cap and a method for making a spar cap from such strips are provided. The strip is stacked with similar strips to form the spar cap. The strip has a substantially constant cross-section defined by first and second mutually opposed and longitudinally extending sides, and by first and second longitudinal edges. The first and the second sides include first and second abutment surfaces, respectively. The first and/or the second abutment surfaces has corrugated profile such that a plurality of longitudinally extending grooves are defined on the abutment surface having the corrugated profile. When the strip is stacked with similar strips, and subsequently resin is infused, the grooves on the abutment surface having the corrugated profile facilitate transfer and flow of the resin into spaces between the stacked strips.
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公开(公告)号：US20200300216A1
公开(公告)日：2020-09-24
申请号：US16825164
申请日：2020-03-20
摘要： A wind turbine blade of a wind turbine, the wind turbine blade including a shell and a spar having at least one spar cap is provided. At least one of the at least one spar cap includes at least two longitudinal support structure elements, whereby at least two of the at least two longitudinal support structure elements are arranged adjacent to one another in a longitudinal direction of the wind turbine blade and at least one longitudinal support structure includes carbon fiber-reinforced plastic and at least one other longitudinal support structure includes at least one fiber-reinforced plastic different from carbon fiber-reinforced plastic.
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