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公开(公告)号：EP0905436A3
公开(公告)日：1999-09-01
申请号：EP98116965.9
申请日：1998-09-08
发明人： Stautner, Wolfgang
CPC分类号： F17C3/085 , F17C2203/0687 , F17C2221/014 , F17C2221/017 , F17C2270/0509 , F25B9/10 , F25B9/145 , F25B2309/1407 , F25D19/006 , G01R33/3804 , G01R33/3815 , H01F6/04
摘要： The present invention relates to a cooling system for cryostats or transport containers for liquids incorporating a PTR cooler. The cryostat usually consists of several interior cylindrical or otherwise shaped vessels for storing liquids. In particular, the cryostat for NMR applications and related fields usually comprises an outer vacuum case, sometimes also a nitrogen can, as well as one or several radiation shields and the helium vessel housing the superconducting magnet whereas the latter usually is made of NbTi, Nb 3 Sn, and/or some HTC conductor. It is the aim of the present invention to use a pulse tube cooler by incorporation into an NMR cryostat via an opening, an opening refers to the neck tube itself or to any other means for accessing the cryostat for filling or for energising the magnet or acting conjointly as a pressure relief tube or/and as a drainage outlet e.g. for storage tanks and most generally for using the pulse tube as a means for rigidly suspending or supporting various parts in a cryostat.
摘要翻译： 本发明涉及用于包含PTR冷却器的液体的低温恒温器或运输容器的冷却系统。 低温恒温器通常由用于储存液体的多个内部圆柱形或其他形状的容器组成。 特别地，用于NMR应用和相关领域的低温恒温器通常包括外部真空壳体，有时也是氮气罐，以及一个或多个辐射屏蔽体和容纳超导磁体的氦气容器，而后者通常由NbTi，Nb 3 Sn ，和/或一些HTC指挥。 本发明的目的是使用脉冲管冷却器，其通过开口结合到NMR低温恒温器中，开口指的是管颈本身或用于进入低温恒温器以用于填充或激励磁体的任何其他装置或作用 作为压力释放管或/和作为排水口例如 用于储罐，并且最一般地用于使用脉冲管作为用于将各种部件刚性地悬挂或支撑在低温恒温器中的装置。
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52.发明公开NMR magnet assembly with a neck tube housing a pulse tube refrigerator 有权金属公司的Kernspinresonanz mit einem Halsrohr，在德国的Pulsrohrkühleruntergebracht ist
公开(公告)号：EP0905524A1
公开(公告)日：1999-03-31
申请号：EP98116964.2
申请日：1998-09-08
IPC分类号： G01R33/38
CPC分类号： F25B9/145 , F25B9/10 , F25B2309/1406 , F25B2309/1408 , F25B2309/1414 , F25B2309/1421 , F25D19/006 , G01R33/3815
摘要： The present invention relates to MRI or NMR systems and, in particular, to a cooling system for a magnet assembly housed in a cryostat incorporating a pulse tube refrigerator (8). The cryostat usually consists of several interior cylindrical or oval-shaped vessels for storing liquids and usually comprises an outer vacuum case, a nitrogen can or a radiation shield instead, and a further radiation shield and the helium vessel (4) housing the superconducting magnet (2). The magnet usually is made of NbTi, Nb3Sn, or some HTC conductor or a combination of both.
The present invention uses a pulse tube refrigerator (8), the so-called pulse tube cooler, which essentially comprises an empty tube and a further tube housing the regenerator material for the cooler, which is inserted into the neck tube (6) of the cryosat.摘要翻译： 本发明涉及MRI或NMR系统，特别涉及一种用于磁体组件的冷却系统，该冷却系统容纳在并入有脉冲管制冷器（8）的低温恒温器中。 低温恒温器通常由几个用于储存液体的内部圆柱形或椭圆形容器组成，并且通常包括外部真空壳体，氮气罐或辐射屏蔽罩，以及另外的辐射屏蔽件和容纳超导磁体的氦气容器（4） 2）。 磁体通常由NbTi，Nb3Sn或一些HTC导体或两者的组合制成。 本发明使用脉冲管制冷器（8），即所谓的脉冲管冷却器，其基本上包括一个空管和另一个管，其中容纳冷却器的再生器材料，该再生器材料插入到冷却器的颈管（6）中 cryosat。
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公开(公告)号：EP0905435A2
公开(公告)日：1999-03-31
申请号：EP98116962.6
申请日：1998-09-08
发明人： Stautner, Wolfgang
CPC分类号： F17C3/085 , F17C2203/0687 , F17C2221/017 , F17C2227/0353 , F17C2270/0509 , F25B9/10 , F25B9/145 , F25B2309/1425 , F25D19/006
摘要： The various components, namely the different vessels contained within each other for housing the superconducting magnet, or the liquid comprising a cryostat or storage tank for cryogenic liquids are generally either suspended or supported by each other. Thus, a support/suspension system has various tasks, besides carrying the magnet or shield loads, it also keeps the position of the cold mass during shipping and also fixes the internal clearances between the radiation shields during installation as well as repeated cooldown. The various constraints put onto these suspension systems result in an increased input of heat into the cryostat depending on the overall size of cryostat and superconducting magnet system.
Various parts of the cryogenic components such as radiation shields have to be cooled, either by means of using liquids or by using forced convection cooling, or by other external means such as conventional GM-cryocoolers.
The present invention therefore provides a new type of support or suspension system which combines the two functions mentioned above, namely supporting or suspending and cooling, and applies these to the pulse tube cooler. The pulse tubes (22-38) could be arranged in series or in parallel, could be single or multi-staged or feature an additional liquefying stage and suspend or support a superconducting magnet or HTS conductor within a cryostat. The pulse tube being either a suspension or support member could also simultaneously cool the shields 26 connected to it and at the same time carry shield or magnet loads.摘要翻译： 各种部件，即包含在彼此内用于容纳超导磁体的不同容器，或包括用于低温液体的低温恒温器或储罐的液体通常彼此悬挂或支撑。 因此，支撑/悬挂系统除了承载磁体或屏蔽载荷之外还具有各种任务，它还在运输期间保持冷质量的位置并且还在安装期间固定辐射屏蔽之间的内部间隙以及反复冷却。 根据低温恒温器和超导磁体系统的总体尺寸，放置在这些悬架系统上的各种约束导致热量输入到低温恒温器的输入增加。 必须通过使用液体或使用强制对流冷却或通过诸如常规GM-低温机的其他外部手段来冷却低温部件的各个部分，例如辐射屏蔽层。 因此，本发明提供了一种新型的支撑或悬挂系统，其组合了上述两种功能，即支撑或悬挂和冷却，并将其应用于脉管冷却器。 脉冲管（22-38）可以串联或并联布置，可以是单级或多级的，或者具有额外的液化阶段并且在超低温恒温器内悬挂或支撑超导磁体或HTS导体。 作为悬架或支撑构件的脉冲管也可以同时冷却与其连接的屏蔽件26，并且同时承载屏蔽或磁体负载。
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公开(公告)号：EP0905434A2
公开(公告)日：1999-03-31
申请号：EP98116961.8
申请日：1998-09-08
发明人： Stautner, Wolfgang
CPC分类号： F25B9/145 , F17C3/085 , F17C2203/0687 , F17C2221/014 , F17C2221/017 , F25B9/10 , F25B2309/1406 , F25B2309/1407 , F25B2309/1408 , F25B2400/17 , F25D19/006 , H01F6/04
摘要： Cryostat systems comprise first and second liquid interconnected helium baths, and a magnet structure which is immersed in one of the baths. The liquid helium is cooled by means of a pumped refrigeration means.
The present invention replaces the pumped refrigeration means with a pulse tube refrigerator which can be located directly within the two baths. The pulse tube refrigerator has a 'cold finger' having cold and warm ends. The cold end extracts into the bath housing the coil structure and has heat exchange connected thereto.
The pulse tube refrigerator can also serve to cool the radiation shields.摘要翻译： 低温恒温器系统包括第一和第二液体互连的氦浴以及浸入其中一个浴中的磁体结构。 液氦通过泵送冷却装置进行冷却。 本发明用脉冲管制冷机代替泵送制冷装置，该制冷机可以直接位于两个浴槽内。 脉冲管制冷机具有冷端和冷端的“冷手指”。 冷端提取到容纳线圈结构的浴中并且与其连接进行热交换。 脉管制冷机也可以用来冷却辐射屏蔽。
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公开(公告)号：EP0726582B1
公开(公告)日：1998-07-22
申请号：EP96100195.5
申请日：1996-01-09
发明人： Gore, Russell Peter
IPC分类号： H01F6/04 , G01R33/3815 , F17C13/00 , F25D19/00
CPC分类号： F25D19/006 , G01R33/3815 , H01F6/04
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公开(公告)号：EP0619500B1
公开(公告)日：1998-06-10
申请号：EP93118633.2
申请日：1993-11-19
IPC分类号： G01R33/38 , G01R33/3875
CPC分类号： G01R33/3875 , G01R33/3873
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公开(公告)号：EP0468425B1
公开(公告)日：1998-01-07
申请号：EP91112282.8
申请日：1991-07-22
IPC分类号： G01R33/42 , G01R33/3815 , H01F6/06
CPC分类号： G01R33/421
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公开(公告)号：EP0797290A2
公开(公告)日：1997-09-24
申请号：EP97103192.7
申请日：1997-02-27
发明人： Hickman, Kevin
IPC分类号： H02M3/28
CPC分类号： H02M3/33507 , Y02B70/1433
摘要： A regulated resonant converter comprises a series resonant circuit through which current is switched alternately in opposite directions by a pair of switching transistors, a rectifier via which the switching transistors are fed with d.c. current from an a.c. mains supply input, operation of the switching transistors being controlled by signals generated in a control circuit, in dependence upon a fed-back sample of a convertor output developed in the resonant circuit in accordance with the amplitude of which regulation is effected, and a cross-over voltage associated with current reversal in an inductor which forms a part of the resonant circuit, which cross-over voltage is fed to the control circuit via a differentiator whereby switch operation is effectively enhanced.
摘要翻译： 调节型谐振变换器包括串联谐振电路，电流通过一对开关晶体管在相反方向交替切换，整流器通过开关晶体管馈送直流。 来自a.c. 电源输入，开关晶体管的操作由控制电路中产生的信号控制，这取决于谐振电路中根据调节幅度产生的转换器输出的反馈样本，以及交叉 与形成谐振电路的一部分的电感器中的电流反转相关的过电压，该交叉电压通过微分器馈送到控制电路，从而有效地提高了开关操作。
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公开(公告)号：EP0797289A2
公开(公告)日：1997-09-24
申请号：EP97103191.9
申请日：1997-02-27
发明人： Hickman, Kevin
IPC分类号： H02M3/28
CPC分类号： H02M3/337 , H02M3/28 , Y02B70/1433
摘要： A resonant converter arrangement comprising two resonant converters, each having a resonant circuit through which current is switched alternately in opposite directions by switch means, the outputs of the two resonant converters being mutually combined to provide an output of the arrangement the amplitude of which is controlled in dependence upon the relative phase of the outputs of the two resonant converters, by a switch controller to which the switch means is arranged to be responsive.
摘要翻译： 一种谐振变换器装置，包括两个谐振转换器，每个谐振转换器具有谐振电路，电流通过开关装置以相反方向交替切换，两个谐振转换器的输出相互组合，以提供其幅度被控制的布置的输出 取决于两个谐振转换器的输出的相对相位，开关控制器被布置成响应于开关控制器。
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公开(公告)号：EP0694931B1
公开(公告)日：1997-09-10
申请号：EP95110118.7
申请日：1995-06-29
IPC分类号： H01F6/00 , F17C13/08 , G01R33/3815
CPC分类号： F17C13/087 , F17C2203/0391 , F17C2203/0629 , F17C2203/0687 , F17C2221/017 , F17C2223/0161 , G01R33/3815 , H01F6/04
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