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公开(公告)号：US11972877B2
公开(公告)日：2024-04-30
申请号：US17186223
申请日：2021-02-26
申请人： HITACHI, LTD.
发明人： Shinji Fujita , Tsuyoshi Wakuda , Yota Ichiki , Motomune Kodama
CPC分类号： H01B12/02 , H01R4/68 , H10N60/202 , H10N60/80
摘要： A superconducting wire connector includes superconducting wires and a sintered body containing MgB2. The superconducting wires are connected by the sintered body. At least one of the superconducting wires includes a superconducting core having a first outer surface. The sintered body is in contact with the first outer surface. A method of connecting superconducting wires by a sintered body containing MgB2 includes exposing a superconducting core of at least one of the superconducting wires by removing a portion, positioned in the middle in a longitudinal direction of the at least one of the superconducting wires, of a metal sheath disposed around the superconducting core, disposing the at least one of the superconducting wires through a container, filling the container with a raw material of MgB2, and forming the sintered body being in contact with an outer surface of the superconducting core by sintering the raw material filled in the container.
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2.发明申请CONDUCTIVE COOLING-TYPE PERSISTENT CURRENT SWITCH, MRI APPARATUS AND NMR APPARATUS 有权导电冷却型电流开关，MRI装置和NMR装置公开(公告)号：US20150228391A1
公开(公告)日：2015-08-13
申请号：US14421470
申请日：2013-07-12
申请人： Hitachi, Ltd.,
发明人： Motomune Kodama , Kazuhide Tanaka , Yota Ichiki
CPC分类号： H01F6/06 , G01R33/3403 , G01R33/3664 , G01R33/3815 , H01F6/04 , H01L39/20
摘要： A technical problem is to turn a persistent current switch on and off at high speed with less heat input. The invention relates to a conductive cooling-type persistent current switch, including: a superconductive wire 1 through which a current is passed; a cooling stage 9 which cools the superconductive wire; and a heater 8 which heats the superconductive wire, wherein the superconductive wire is placed between faces which are each formed by the cooling stage and the heater, a core of the superconductive wire is magnesium diboride 6, and a base material 5 placed around an outer periphery of the core is a material having a resistivity of 10 μΩcm or more at 40 K.
摘要翻译： 技术问题是以较少的热量输入高速打开持续电流开关。 本发明涉及一种导电冷却型持续电流开关，包括：超导线1，电流通过该超导线1; 冷却级9，其冷却超导线; 以及加热器8，其加热超导线，其中超导线放置在由冷却台和加热器形成的面之间，超导丝的芯是二硼化镁6，并且基材5放置在外部 芯的外围是在40K下电阻率为10μΩ·cm以上的材料。
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公开(公告)号：US09887029B2
公开(公告)日：2018-02-06
申请号：US14421470
申请日：2013-07-12
申请人： Hitachi, Ltd.
发明人： Motomune Kodama , Kazuhide Tanaka , Yota Ichiki
CPC分类号： H01F6/06 , G01R33/3403 , G01R33/3664 , G01R33/3815 , H01F6/04 , H01L39/20
摘要： A technical problem is to turn a persistent current switch on and off at high speed with less heat input. The invention relates to a conductive cooling-type persistent current switch, including: a superconductive wire 1 through which a current is passed; a cooling stage 9 which cools the superconductive wire; and a heater 8 which heats the superconductive wire, wherein the superconductive wire is placed between faces which are each formed by the cooling stage and the heater, a core of the superconductive wire is magnesium diboride 6, and a base material 5 placed around an outer periphery of the core is a material having a resistivity of 10 μΩcm or more at 40 K.
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公开(公告)号：US20130102473A1
公开(公告)日：2013-04-25
申请号：US13659503
申请日：2012-10-24
申请人： HITACHI, LTD.
发明人： Yota Ichiki , Kazuhide Tanaka
CPC分类号： H01F6/06 , H01B1/00 , H01F6/065 , H01F41/048 , H01L39/02 , H01R4/68 , Y10T29/49014
摘要： A superconducting magnet includes a superconducting wire including magnesium diboride; a superconducting coil where a part of the superconducting wire is wound; and a joint where an end of the superconducting wire and an end of another superconducting wire are connected and united. The joint includes a sintered body including magnesium diboride, an averaged particle diameter of magnesium diboride at the joint of the superconducting wire is greater than an averaged particle diameter of the magnesium diboride at the part where the superconducting wire is wound.
摘要翻译： 超导磁体包括包含二硼化硼的超导线; 超导线的一部分被卷绕的超导线圈; 以及连接并联合超导线的端部和另一超导线的端部的接头。 接头包括包含二硼化硼的烧结体，在超导线的接头处的二硼化镁的平均粒径大于超导线缠绕部分的二硼化镁的平均粒径。
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公开(公告)号：US11127514B2
公开(公告)日：2021-09-21
申请号：US15746871
申请日：2015-07-24
申请人： Hitachi, Ltd.
发明人： Hideki Tanaka , Kazuya Nishi , Takaaki Suzuki , Yota Ichiki
IPC分类号： H01B12/10 , G01R33/3815 , H01F6/06 , H01B12/04 , C01B35/04
摘要： It is an object of the present invention to provide an MgB2 wire helping to achieve compatibility between the ease with which superconducting connection is effected and thermal stability. A superconducting wire according to the present invention includes: an elemental wire formed of MgB2; and a first metal not reacting with Mg. In a section orthogonal to the longitudinal direction of the superconducting wire, the region extending from the center of the superconducting wire to the installation position of the elemental wire is formed by the elemental wire and the first metal.
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公开(公告)号：US10804624B2
公开(公告)日：2020-10-13
申请号：US16304010
申请日：2017-05-12
申请人： Hitachi, Ltd.
发明人： Yota Ichiki , Kazutaka Okamoto
摘要： The present invention provides a joint portion of MgB2 superconducting wires having exceptional energization characteristics and high reliability. The joint portion of the superconducting wires according to the present invention has a space for filling Mg into a portion inside a container or pressurizing member, the portion not being adjacent to an MgB2 sintered body.
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公开(公告)号：US10714238B2
公开(公告)日：2020-07-14
申请号：US15544678
申请日：2016-02-03
申请人： Hitachi Ltd.
发明人： Yota Ichiki , Tsuyoshi Wakuda
摘要： The problem is to attain a joint for multi-core superconducting wires having a high critical current property. The joint for superconducting wires of the present invention has a first sintered body containing MgB2 configured to fix a plurality of superconducting wires, and a second sintered body containing MgB2 configured to joint the superconducting wires.
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