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公开(公告)号：US10401414B2
公开(公告)日：2019-09-03
申请号：US15427498
申请日：2017-02-08
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventor： Takatoshi Matsushita , Keisuke Ota , Osamu Hasegawa , Kengo Imaoka , Koji Fukami
Abstract: A method of testing a receptor of a wind turbine includes a step of moving an unmanned aerial vehicle (UAV) close to the receptor of a wind turbine blade mounted to a hub of the wind turbine, and performing an electric continuity test on the receptor.
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公开(公告)号：US20210363963A1
公开(公告)日：2021-11-25
申请号：US17313233
申请日：2021-05-06
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventor： Takeshi FUJITA , Keisuke Ota , Kentaro SHINDO , Hiroaki TAKEUCHI , Toshiyuki HIRANO , Atsushi YUGE
Abstract: A windmill blade includes a blade main body and a leading edge protector. The leading edge protector includes a conductive plate covering a leading edge, and a conductive mesh member connected to the conductive plate along a blade chord direction of the windmill blade. The conductive mesh member is provided with a plurality of holes. A skin or an adhesive at least partially enters the plurality of holes, so that the leading edge protector is fixed to the skin.
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3.发明申请公开(公告)号：US20190386551A1
公开(公告)日：2019-12-19
申请号：US16424956
申请日：2019-05-29
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventor： Mikito SASAKI , Shinichi ISOBE , Masayuki SAKAI , Hisanobu SHINODA , Keisuke Ota , Ryoji OKABE
Abstract: An inner coil end portion of a coil includes inner notch portions and that are positioned to respectively overlap inner coil end portions of other coils which are adjacent to the coil in an axial direction as seen in the axial direction, and that are capable of accommodating the inner coil end portions of the other coils in the axial direction. An outer coil end portion of the coil includes outer notch portions and that are positioned to respectively overlap outer coil end portions of the other coils which are adjacent to the coil in the axial direction as seen in the axial direction, and that are capable of accommodating the outer coil end portions of the other coils in the axial direction.
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4.发明申请公开(公告)号：US20190302034A1
公开(公告)日：2019-10-03
申请号：US16149639
申请日：2018-10-02
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventor： Naota Watanabe , Keisuke Ota
IPC: G01N21/954
Abstract: Provided is a method that enables an interior of a wind turbine blade to be safely inspected. A method of inspecting an interior of a wind turbine blade includes the steps of: placing, in the wind turbine blade, an inspection unit including a support frame, at least one wheel rotatably provided to the support frame, and inspection equipment attached to a front portion of the support frame in a traveling direction; and conveying the inspection unit from a blade root portion toward a blade tip portion of the wind turbine blade. The conveying step includes connecting at least one extension bar to a back end portion of the inspection unit, and sending the inspection unit by pushing the extension bar toward the blade tip portion.
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公开(公告)号：US12018640B2
公开(公告)日：2024-06-25
申请号：US17313233
申请日：2021-05-06
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventor： Takeshi Fujita , Keisuke Ota , Kentaro Shindo , Hiroaki Takeuchi , Toshiyuki Hirano , Atsushi Yuge
CPC classification number: F03D1/0675 , F03D80/30 , F05B2240/221 , F05B2240/301 , F05B2240/303 , F05B2280/6003
Abstract: A windmill blade includes a blade main body and a leading edge protector. The leading edge protector includes a conductive plate covering a leading edge, and a conductive mesh member connected to the conductive plate along a blade chord direction of the windmill blade. The conductive mesh member is provided with a plurality of holes. A skin or an adhesive at least partially enters the plurality of holes, so that the leading edge protector is fixed to the skin.
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Patent Agency Ranking
公开(公告)号：US10041471B1
公开(公告)日：2018-08-07
申请号：US15697643
申请日：2017-09-07
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventor： Yasutaka Kimura , Takao Kuroiwa , Kouji Esaki , Toshiyuki Hirano , Kentaro Shindo , Takeshi Fujita , Keisuke Ota
IPC: F03D1/06
Abstract: Provided are a wind turbine blade, with which effective reinforcement against possible flexural deformation in a longitudinal direction is realized, and a reinforcing method for the wind turbine blade. The wind turbine blade includes a hollow blade main body having a cylindrical blade root portion and extending from the blade root portion along a blade length direction, and a reinforcing plate provided in contact with an inside surface of the blade root portion and formed of an elongated member having a dimension along the blade length direction that is larger than a dimension along a circumferential direction of the blade root portion.
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7.发明授权公开(公告)号：US11118563B2
公开(公告)日：2021-09-14
申请号：US16019462
申请日：2018-06-26
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventor： Yasutaka Kimura , Takao Kuroiwa , Keisuke Ota
Abstract: A wind turbine blade is reinforced while suppressing possible stress concentration resulting from a load imposed on a blade root portion of the wind turbine blade in a flap direction. The wind turbine blade includes a blade main body extending from the blade root portion toward a blade tip portion and an FRP reinforcing layer formed so as to cover at least a part of the outer surface of the blade root portion of the blade main body. The FRP reinforcing layer includes a plurality of laminated fiber layers and a resin with which the plurality of fiber layers is impregnated. The FRP reinforcing layer is formed such that, in a cross section along a longitudinal direction of the blade main body, both ends of the plurality of laminated fiber layers in the longitudinal direction are tapered.
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公开(公告)号：US11154955B2
公开(公告)日：2021-10-26
申请号：US16149633
申请日：2018-10-02
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventor： Keisuke Ota
Abstract: Provided is a method of repairing damage on a wind turbine blade with a simple method. The method of repairing a wind turbine blade is a method of repairing a wind turbine blade for a damage portion caused by a lightning strike, including the steps of: generating in advance a repairing member molded in a predetermined flat plate shape and solidified; determining a damage determination range defined in advance for the damage portion; and bonding the repairing member when a result of inspecting the wind turbine blade indicates that the damage portion is within the damage determination range. The step of generating the repairing member may include stacking glass fiber materials to generate the repairing member.
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9.发明授权公开(公告)号：US10598608B2
公开(公告)日：2020-03-24
申请号：US16149639
申请日：2018-10-02
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventor： Naota Watanabe , Keisuke Ota
IPC: G01N21/954
Abstract: Provided is a method that enables an interior of a wind turbine blade to be safely inspected. A method of inspecting an interior of a wind turbine blade includes the steps of: placing, in the wind turbine blade, an inspection unit including a support frame, at least one wheel rotatably provided to the support frame, and inspection equipment attached to a front portion of the support frame in a traveling direction; and conveying the inspection unit from a blade root portion toward a blade tip portion of the wind turbine blade. The conveying step includes connecting at least one extension bar to a back end portion of the inspection unit, and sending the inspection unit by pushing the extension bar toward the blade tip portion.
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10.发明授权公开(公告)号：US10514022B2
公开(公告)日：2019-12-24
申请号：US15705245
申请日：2017-09-14
Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
Inventor： Yasutaka Kimura , Takao Kuroiwa , Keisuke Ota
Abstract: A wind turbine blade is reinforced while suppressing possible stress concentration resulting from a load imposed on a blade root portion of the wind turbine blade in a flap direction. The wind turbine blade includes a blade main body extending from the blade root portion toward a blade tip portion and an FRP reinforcing layer formed so as to cover at least a part of the outer surface of the blade root portion of the blade main body. The FRP reinforcing layer includes a plurality of laminated fiber layers and a resin with which the plurality of fiber layers is impregnated. The FRP reinforcing layer is formed such that, in a cross section along a longitudinal direction of the blade main body, both ends of the plurality of laminated fiber layers in the longitudinal direction are tapered.
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