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11. 发明授权

US6157276A MRI magnet assembly with non-conductive inner wall 有权
标题翻译： MRI磁体组件与非导电内壁
公开(公告)号：US6157276A
公开(公告)日：2000-12-05
申请号：US134764
申请日：1998-08-14
申请人： Robert Arvin Hedeen , William Alan Edelstein , Sayed-Amr El-Hamamsy , Kenneth Gordon Herd , Robert Adolph Ackermann
发明人： Robert Arvin Hedeen , William Alan Edelstein , Sayed-Amr El-Hamamsy , Kenneth Gordon Herd , Robert Adolph Ackermann
IPC分类号： A61B5/055 , G01R33/3815 , G01R33/385 , H01F6/00
CPC分类号： G01R33/3854 , G01R33/3815 , Y10S505/879 , Y10S505/893 , Y10S505/898
摘要： An MR magnet assembly includes a cylindrical vessel for housing a superconducting magnet and having a vacuum between its inner and outer walls. The vessel defines a magnet bore for receiving a patient to be imaged. A gradient coil assembly is mounted in the bore adjacent the inner wall of the magnet assembly. To reduce gradient coil noise, the inner wall is constructed of a non-conductive material which does not support eddy currents.
摘要翻译： MR磁体组件包括用于容纳超导磁体并且在其内壁和外壁之间具有真空的圆柱形容器。容器限定用于接收待成像的患者的磁体孔。梯度线圈组件安装在与磁体组件的内壁相邻的孔中。为了减少梯度线圈噪声，内壁由不支持涡流的非导电材料构成。

12. 发明授权

US4212169A Cryostat for superconducting NMR spectrometer 失效
标题翻译：用于超导NMR光谱仪的低温恒温器
公开(公告)号：US4212169A
公开(公告)日：1980-07-15
申请号：US879292
申请日：1978-02-21
申请人： George D. Kneip, Jr.
发明人： George D. Kneip, Jr.
IPC分类号： G01R33/32 , G01R33/31 , G01R33/38 , G01R33/3815 , H01F6/06 , H01F7/20 , F17C7/02
CPC分类号： G01R33/31 , G01R33/3815 , F17C2203/016 , Y10S505/844 , Y10S505/893 , Y10S505/898
摘要： An improved cryostat for the superconducting magnet of an NMR spectrometer comprises a nested structure of isothermal shells surrounding a thermally conductive central reservoir of substantially spherical shape containing liquid helium in which the superconducting solenoid remains operational when only partially immersed. A radiation shield surrounding the central reservoir is cooled by the boil-off of escaping helium vapor. The radiation shield is enclosed within an isothermal shell maintained at the temperature of liquid nitrogen by thermal contact with a liquid nitrogen reservoir disposed above the region of the central reservoir and shielded therefrom by a wall of the isothermal shell. An outer radiation shield surrounds the liquid nitrogen reservoir and associated isothermal shell and the outer radiation shield is maintained at a temperatures of the order of 235.degree. K. by vapor cooling from the boil-off of escaping nitrogen and helium. A hermitically sealed containment vessel forms the outer wall of the cryostat and provides a port for evacuating to a very low common pressure all the interior spaces between adjacent nested structures.
摘要翻译：用于NMR光谱仪的超导磁体的改进的低温恒温器包括围绕包含液氦的基本上为球形的导热中心储存器的等温壳体的嵌套结构，其中超导螺线管在仅部分浸入时保持操作。围绕中央储层的辐射屏蔽体由逸出的氦气蒸气冷却。通过与设置在中央储存器的区域上方的液氮储存器热接触而保持在液氮温度下的等温壳体中的辐射屏蔽被封闭在等温壳体内，并通过等温壳体的壁与其隔开。外辐射屏蔽围绕液氮储存器和相关的等温壳，外辐射屏蔽保持在235°K级的温度，通过从逸出的氮和氦的蒸发蒸发冷却。密闭的密封容器形成低温恒温器的外壁，并提供用于将相邻嵌套结构之间的所有内部空间抽真空至非常低的共同压力的端口。

13. 发明申请

WO2013080986A1 超電導電磁石装置、その冷却方法、および磁気共鳴イメージング装置审中-公开
标题翻译：超导电子设备，其冷却方法和磁共振成像装置
公开(公告)号：WO2013080986A1
公开(公告)日：2013-06-06
申请号：PCT/JP2012/080690
申请日：2012-11-28
申请人：株式会社日立製作所
发明人：青木　学 , 安藤　竜弥 , 村田　幸弘 , 中川　竜司
IPC分类号： H01F6/04 , A61B5/055 , G01R33/3815 , H01F6/02
CPC分类号： H01F6/04 , G01R33/3804 , G01R33/3815 , H01F6/02 , Y10S505/844 , Y10S505/85 , Y10S505/879 , Y10S505/893
摘要：　冷媒（Ｒ）が循環される冷媒循環流路（６）と、冷媒循環流路（６）における冷媒（Ｒ）の蒸気を冷却する冷凍機（１２）と、循環される冷媒（Ｒ）により冷却される超電導コイル（４）と、超電導コイル（４）と熱的に接触されると共に、内部空間（Ｓ）を有する保護抵抗（１０）と、保護抵抗（１０）内の内部空間（Ｓ）に、冷媒（Ｒ）よりも高沸点、かつ、冷媒（Ｒ）により凍結される高沸点冷媒を供給する高沸点冷媒供給部（２２）と、冷媒循環流路（６）、超電導コイル（４）、および保護抵抗（１０）を少なくとも収容する真空断熱容器（２）と、を備えるように、超電導磁石装置を構成した。
摘要翻译：超导电磁铁装置具有：制冷剂循环流路（6），制冷剂（R）通过该循环流路径流动; 用于冷却制冷剂循环流路（6）中的制冷剂（R）蒸汽的冰箱（12）; 由循环制冷剂（R）冷却的超导线圈（4）; 用于与所述超导线圈（4）热接触并具有内部空间（S）的保护电阻器（10）; 用于向保护电阻器（10）内部的内部空间（S）供给比沸点高于制冷剂（R）的高沸点制冷剂的高沸点制冷剂供给部（22），以及其被制冷剂（R）冷冻; 和至少容纳制冷剂循环流路（6），超导线圈（4）和保护电阻（10）的真空绝热容器（2）。

14. 发明申请

US20140329688A1 SUPERCONDUCTING ELECTROMAGNET DEVICE, COOLING METHOD THEREFOR, AND MAGNETIC RESONANCE IMAGING DEVICE 有权
标题翻译：超导电子设备，其冷却方法和磁共振成像装置
公开(公告)号：US20140329688A1
公开(公告)日：2014-11-06
申请号：US14360653
申请日：2012-11-28
申请人： HITACHI, LTD
发明人： Manabu Aoki , Ryuya Ando , Yukihiro Murata , Ryoji Nakagawa
IPC分类号： H01F6/04 , G01R33/3815
CPC分类号： H01F6/04 , G01R33/3804 , G01R33/3815 , H01F6/02 , Y10S505/844 , Y10S505/85 , Y10S505/879 , Y10S505/893
摘要： A superconducting magnet device is configured to include: a refrigerant circulation flowpath in which a refrigerant (R) circulates; a refrigerator for cooling vapor of the refrigerant (R) in the refrigerant circulation flowpath; a superconducting coil cooled by the circulating refrigerant (R); a protective resistor thermally contacting the superconducting coil and having an internal space (S); a high-boiling-point refrigerant supply section for supplying a high-boiling-point refrigerant having a higher boiling point than the refrigerant (R) and frozen by the refrigerant (R) to the internal space (S) in the protective resistor; and a vacuum insulating container for at least accommodating the refrigerant circulation flowpath, the superconducting coil, and the protective resistor.
摘要翻译：超导磁体装置构成为包括：制冷剂循环流路，其中制冷剂（R）循环; 用于冷却制冷剂循环流路中的制冷剂（R）的蒸气的冷冻机; 由循环制冷剂（R）冷却的超导线圈; 与所述超导线圈热接触并具有内部空间（S）的保护电阻器; 高沸点制冷剂供给部，用于供给比制冷剂（R）沸点高的高沸点制冷剂，并由制冷剂（R）冻结到保护电阻体内的内部空间（S）; 以及真空绝热容器，用于至少容纳制冷剂循环流路，超导线圈和保护电阻。

15. 发明授权

US06900714B1 System and method for quench and over-current protection of superconductor 失效
标题翻译：超导体的淬火和过电流保护系统及方法
公开(公告)号：US06900714B1
公开(公告)日：2005-05-31
申请号：US10882024
申请日：2004-06-30
申请人： Xianrui Huang , Evangelos Trifon Laskaris , Kiruba Haran Sivasubramaniam , James William Bray , David Thomas Ryan , James Michael Fogarty , Albert Eugene Steinbach
发明人： Xianrui Huang , Evangelos Trifon Laskaris , Kiruba Haran Sivasubramaniam , James William Bray , David Thomas Ryan , James Michael Fogarty , Albert Eugene Steinbach
IPC分类号： H02H7/00 , H01F6/00 , H02H9/00
CPC分类号： H02H7/001 , Y02E40/68 , Y10S505/85 , Y10S505/879 , Y10S505/885 , Y10S505/892 , Y10S505/893
摘要： A system and method for protecting a superconductor. The system may comprise a current sensor operable to detect a current flowing through the superconductor. The system may comprise a coolant temperature sensor operable to detect the temperature of a cryogenic coolant used to cool the superconductor to a superconductive state. The control circuit is operable to estimate the superconductor temperature based on the current flow and the coolant temperature. The system may also be operable to compare the estimated superconductor temperature to at least one threshold temperature and to initiate a corrective action when the superconductor temperature exceeds the at least one threshold temperature.
摘要翻译：一种用于保护超导体的系统和方法。该系统可以包括可操作以检测流过超导体的电流的电流传感器。该系统可以包括可操作以检测用于将超导体冷却到超导状态的低温冷却剂的温度的冷却剂温度传感器。控制电路可操作以基于电流和冷却剂温度来估计超导体温度。该系统还可以用于将超导体的估计温度与至少一个阈值温度进行比较，并且当超导体温度超过至少一个阈值温度时启动校正动作。

16. 发明授权

US06181228B2 Superconductive magnet including a cryocooler coldhead 失效
公开(公告)号：US06181228B2
公开(公告)日：2001-01-30
申请号：US09436830
申请日：1999-11-09
申请人： Evangelos Trifon Laskaris , Paul Shadforth Thompson , Yu Wang
发明人： Evangelos Trifon Laskaris , Paul Shadforth Thompson , Yu Wang
IPC分类号： H01F500
CPC分类号： F17C3/085 , F17C2203/0391 , F17C2203/0629 , F17C2223/0161 , F17C2227/0353 , F17C2260/036 , F25B2400/17 , F25D19/006 , G01R33/3815 , H01F6/04 , Y10S505/893 , Y10S505/894
摘要： A magnet, such as an open or closed magnet, has a first assembly with at least one superconductive main coil and with a first vacuum enclosure enclosing the main coil(s). A first cryocooler coldhead has a rigid first housing and is generally vertically aligned. A first flexible bellows is vertically aligned, has a first end attached to the first housing of the first cryocooler coldhead and has a second end attached to the first vacuum enclosure of the first assembly.

17. 发明授权

US5412363A Open access superconducting MRI magnet 失效
标题翻译：开放式超导MRI磁铁
公开(公告)号：US5412363A
公开(公告)日：1995-05-02
申请号：US259914
申请日：1994-06-10
申请人： Bruce C. Breneman , Raymond E. Sarwinski , Yen-Hwa L. Hsu
发明人： Bruce C. Breneman , Raymond E. Sarwinski , Yen-Hwa L. Hsu
IPC分类号： H01F7/02 , A61B5/055 , F25B9/14 , F25D19/00 , G01R33/38 , G01R33/3815 , H01F6/00 , H01F6/04 , H01F7/22 , G01V3/00
CPC分类号： G01R33/3806 , G01R33/3815 , H01F6/00 , H01F6/04 , F25B9/14 , F25D19/006 , Y10S505/893
摘要： An open access MRI magnet includes a ferromagnetic frame open on at least two sides and having upper and lower end plates and at least two support columns. A superconducting coil assembly is mounted to each end plate for generating a magnetic flux field in a patient receiving area located between the end plates. Each superconducting coil assembly includes a toroidal vacuum tight vessel, insulation, and one or more temperature shields mounted within the vacuum tight vessel. One or more coils of superconducting wire is wound within the vacuum vessel, and is coupled to a power source and to a persistent switch for maintaining a constant flow of current with no power consumption. A return path for the flux is provided by the end plates and support posts of the frame. The superconducting coils, the thermal shields, and the persistent switch are cooled by a cryocooler, by means of conduction through solid thermal conductors or by a combination of conduction and convection, through a fluid cooling circuit, without the consumption of a liquid cryogen.
摘要翻译：开放式磁共振磁体包括在至少两个侧面上开放并具有上端板和下端板以及至少两个支撑柱的铁磁框架。超导线圈组件安装到每个端板，用于在位于端板之间的患者接收区域中产生磁通场。每个超导线圈组件包括环形真空密封容器，绝缘体和安装在真空密封容器内的一个或多个温度屏蔽件。超导线的一个或多个线圈缠绕在真空容器内，并且耦合到电源和持久开关，用于在没有功率消耗的情况下保持恒定的电流流动。用于焊剂的返回路径由框架的端板和支撑柱提供。超导线圈，热屏蔽和持续开关由低温冷却器通过固体热导体传导或通过传导和对流的组合通过流体冷却回路冷却而不消耗液体冷冻剂。

18. 发明授权

US5396206A Superconducting lead assembly for a cryocooler-cooled superconducting magnet 失效
标题翻译：用于低温冷却器超导磁体的超导引线组件
公开(公告)号：US5396206A
公开(公告)日：1995-03-07
申请号：US209287
申请日：1994-03-14
申请人： Kenneth G. Herd , Evangelos T. Laskaris , Paul S. Thompson
发明人： Kenneth G. Herd , Evangelos T. Laskaris , Paul S. Thompson
IPC分类号： H01L39/04 , H01B12/02 , H01F6/00 , H01F6/06 , H01F7/22
CPC分类号： H01F6/065 , Y10S505/844 , Y10S505/879 , Y10S505/893
摘要： A superconducting magnet lead assembly for a cryocooler-cooled superconducting magnet having a design current of between generally 50 and 250 amperes. A DBCO (Dysprosium Barium Copper Oxide), YBCO (Yttrium Barium Copper Oxide), or BSCCO (Bismuth Strontium Calcium Copper Oxide) superconducting lead has its ends flexibly, dielectrically, and thermally connected, one end to the generally 30 to 50 Kelvin first stage and the other end to the generally 8 to 30 Kelvin second stage of the cryocooler coldhead. The superconducting lead has a generally constant cross-sectional area along its length. The design current, the lead's length, and the lead's cross-sectional area are chosen such that the design current times the lead's length divided by the lead's cross-sectional area is between generally 720 and 880 amperes per centimeter for a DBCO or YBCO lead and is between generally 180 and 220 amperes per centimeter for a BSCCO lead. The superconducting lead will not itself precipitate a magnet quench (i.e., the superconducting lead does not conduct significant heat between the coldhead stages during the superconductive mode), and the superconducting lead will survive a lead quench from other causes (i.e., the superconducting lead does conduct the resistive heat buildup to the coldhead stages during a lead quench) and thus be acceptable for commercial applications.
摘要翻译：一种用于低温冷却超导磁体的超导磁体引线组件，其具有大致50和250安培之间的设计电流。 DBCO（氧化镝钡氧化物），YBCO（钇钡氧化铜）或BSCCO（铋锶钙氧化铜）超导引线的端部灵活，电介质和热连接，一端通常为30至50开尔文第一级另一端通常是低温冷冻机的8〜30开尔文第二阶段。超导引线沿其长度具有大致恒定的横截面积。选择设计电流，引线长度和引线的横截面积，使得引线长度除以引线横截面积的设计电流乘以DBCO或YBCO引线的通常为720至880安培/厘米，对于BSCCO铅，通常在每平方米180和220安培之间。超导引线本身不会沉淀磁体淬火（即超导引线在超导模式之间的冷端阶段之间不会产生显着的热），并且超导引线将在其他原因引起的猝熄（例如，超导引线在铅淬火期间对冷头阶段进行电阻积热），因此对于商业应用是可以接受的。

19. 发明公开

EP1612903A3 System and method for quench and over-current protection of superconductor 有权
标题翻译：对于Quenschschutz和超导体的过电流保护方法及装置
公开(公告)号：EP1612903A3
公开(公告)日：2011-10-19
申请号：EP05252675.3
申请日：2005-04-28
申请人： GENERAL ELECTRIC COMPANY
发明人： Huang, Xianrui , Bray, James William , Sivasubramaniam, Kiruba Haran , Ryan, David Thomas , Laskaris, Evangelos Trifon , Steinbach, Albert Eugene , Fogarty, James Michael
IPC分类号： H02H7/00
CPC分类号： H02H7/001 , Y02E40/68 , Y10S505/85 , Y10S505/879 , Y10S505/885 , Y10S505/892 , Y10S505/893
摘要： A system (20) and method for protecting a superconductor (12). The system (20) may comprise a current sensor (22) operable to detect a current flowing through the superconductor (12). The system (20) may comprise a coolant temperature sensor (24) operable to detect the temperature of a cryogenic coolant used to cool the superconductor (12) to a superconductive state. The control circuit (26) is operable to estimate the superconductor temperature based on the current flow and the coolant temperature. The system (20) may also be operable to compare the estimated superconductor temperature to at least one threshold temperature and to initiate a corrective action when the superconductor temperature exceeds the at least one threshold temperature.

20. 发明公开

EP0981057A2 MRI magnet assembly with non-conductive inner wall 有权
标题翻译：魔杖魔杖魔杖
公开(公告)号：EP0981057A2
公开(公告)日：2000-02-23
申请号：EP99306140.7
申请日：1999-08-03
申请人： GENERAL ELECTRIC COMPANY
发明人： Hedeen, Robert Arvin , El-Hamamsy, Sayed-Amr , Herd, Kenneth Gordon , Edelstein, William Alan , Ackermann, Robert Adolph
IPC分类号： G01R33/3815
CPC分类号： G01R33/3854 , G01R33/3815 , Y10S505/879 , Y10S505/893 , Y10S505/898
摘要： An MR magnet assembly (10) includes a cylindrical vessel for housing a superconducting magnet and having a vacuum between its inner and outer walls (14,13). The vessel defines a magnet bore (36) for receiving a patient to be imaged. A gradient coil assembly (66) is mounted in the bore adjacent the inner wall (14) of the magnet assembly. To reduce gradient coil noise, the inner wall is constructed of a nonconductive material which does not support eddy currents.
摘要翻译： MR磁体组件（10）包括用于容纳超导磁体并且在其内壁和外壁之间具有真空的圆柱形容器（14,3）。容器限定用于接收待成像的患者的磁体孔（36）。梯度线圈组件（66）安装在与磁体组件的内壁（14）相邻的孔中。为了减少梯度线圈噪声，内壁由不支持涡流的非导电材料构成。

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