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    • 4. 发明申请
    • AUTOMATIC CURRENT SWITCHING OF CURRENT LEADS FOR SUPERCONDUCTING MAGNETS
    • 用于超导磁体的电流自动切换
    • WO2013114233A1
    • 2013-08-08
    • PCT/IB2013/050333
    • 2013-01-14
    • KONINKLIJKE PHILIPS N.V.PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH
    • OVERWEG, Johannes AdrianusAMTHOR, Thomas ErikFORTHMANN, PeterUHLEMANN, FalkDAVID, Bernd
    • H01F6/00H01F6/06
    • G01R33/3642G01R33/34G01R33/3815H01F6/008H01F6/06H01F6/065H01H36/008
    • The invention provides for magnetic resonance imaging system (600) comprising a superconducting magnet (100) with a first current lead (108) and a second current lead (110) for connecting to a current ramping system (624). The magnet further comprises a vacuum vessel (104) penetrated by the first current lead and the second current lead. The magnet further comprises a magnet circuit (106) within the vacuum vessel. The magnet circuit has a first magnet circuit connection (132) and a second magnet circuit connection (134). The magnet further comprises a first switch (120) between the first magnet connection and the first current lead and a second switch (122) between the second magnet connection and the second current lead. The magnet further comprises a first current shunt (128) connected across the first switch and a second current shunt (130) connected across the second switch. The magnet further comprises a first rigid coil loop (124) operable to actuate the first switch. The first rigid coil loop forms a portion of the first electrical connection. The magnet further comprises a second rigid coil loop (126) operable to actuate the second switch. The second rigid coil loop forms a portion of the second electrical connection.
    • 本发明提供了包括具有第一电流引线(108)的超导磁体(100)和用于连接到电流斜坡系统(624)的第二电流引线(110)的磁共振成像系统(600)。 磁体还包括由第一电流引线和第二电流引线穿透的真空容器(104)。 磁体还包括在真空容器内的磁体回路(106)。 磁体电路具有第一磁体电路连接(132)和第二磁体电路连接(134)。 磁体还包括在第一磁体连接和第一电流引线之间的第一开关(120)和在第二磁体连接和第二电流引线之间的第二开关(122)。 磁体还包括跨越第一开关连接的第一电流分流器(128)和连接在第二开关上的第二电流分流器(130)。 磁体还包括可操作以致动第一开关的第一刚性线圈环(124)。 第一刚性线圈环形成第一电连接的一部分。 磁体还包括可操作以致动第二开关的第二刚性线圈环(126)。 第二刚性线圈环形成第二电连接的一部分。