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公开(公告)号：US11009572B2
公开(公告)日：2021-05-18
申请号：US16140466
申请日：2018-09-24
申请人： Shahin Pourrahimi
发明人： Shahin Pourrahimi
IPC分类号： G01R33/34 , G01R33/38 , G01R33/3815
摘要： A method and a system are disclosed for obtaining imaging data using a MRI system configured to provide accurate images with high Signal-to-Noise Ratio (SNR) using superconducting magnets with field strengths in the range of 0.5 Tesla (T) to 3 T. The MRI includes a scanning bore deployed within a Cryogen-Free (CF) conduction-cooled superconducting magnet. The CF may have two stages, in which one stage cools a radiation shield down to a mid-level temperature, such as 35-80 degrees Kelvin (K), and the second stage cools the cold-mass further down to about 3-6 degrees K. The two-stage CF cryocooloer is used to cool target bodies of the superconducting magnet system and the receiving RF coil to create a higher SNR relative to when RF coils are not cooled. Sapphire sheets or bars may be used to cool the RF coils because sapphire conducts heat but not electricity, reducing electrical noise.
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公开(公告)号：US10006579B1
公开(公告)日：2018-06-26
申请号：US15626294
申请日：2017-06-19
CPC分类号： F16L53/00 , F25B9/14 , F25D19/006 , F28F9/26 , F28F13/00 , F28F2013/006 , F28F2013/008
摘要： Embodiments for a cryohead heat transfer coupling as well as methods for extracting heat from an article using these couplings are provided. Couplings employ a component made from a material having a greater mean thermal coefficient of expansion than the mean thermal coefficient of expansion of other coupling components and of the article. As a result, differential contraction during cryocooling contributes a shrink fitting of a portion of the coupling resulting in enhanced thermal conduction when cooling and a releasing of the coupling when ambient temperature is restored.
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公开(公告)号：US20150346299A1
公开(公告)日：2015-12-03
申请号：US13959327
申请日：2013-08-05
申请人： Shahin Pourrahimi
发明人： Shahin Pourrahimi
IPC分类号： G01R33/3815 , H02J15/00 , H01F6/00 , G01R33/38
CPC分类号： G01R33/3815 , G01R33/3804 , H01F6/003 , H02J15/00
摘要： A Cryogen-Free (CF) type MRI superconducting magnet system capable of monitoring the conditions of the system components and, in case of a foreseeable quench, discharging the superconducting magnet at any desired discharge voltage before occurrence of quench.
摘要翻译： 一种能够监测系统部件状况的无冷冻（CF）型MRI超导磁体系统，在可预见的淬火情况下，在发生淬火之前，以任何所需的放电电压对超导磁体进行放电。
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公开(公告)号：US06622494B1
公开(公告)日：2003-09-23
申请号：US09661921
申请日：2000-09-14
申请人： Shahin Pourrahimi
发明人： Shahin Pourrahimi
IPC分类号： F25B1900
CPC分类号： H01F6/04 , F17C2221/017 , F17C2223/0123 , F17C2227/0337 , F17C2270/0527
摘要： The current invention provides, in some embodiments, superconducting cryostat apparatuses, and methods for containing a coolant within the apparatuses and for cooling the apparatuses. The superconducting apparatuses provided by the invention include a self-contained supply of a coolant medium, which can be provided in the form of a pressurized gas. The mass of the coolant medium contained in the apparatus is conserved during operation of the apparatus. The superconducting cryostat apparatuses provided by the invention can be configured, in some embodiments, to eliminate the need for sources of external cooling during operation. The superconducting cryostat apparatuses provided by the invention can be cooled by supplying one or more sealable containers within the apparatuses with a quantity of cooling medium in gaseous form, and sealing the sealable containers. The cooling cooling medium is subsequently cooled to below the critical superconducting temperature of the superconductors contained within the apparatus via indirect cooling with an external heat exchange medium. In some embodiments, the external heat exchange medium can be maintained in essentially continuous contact with the superconducting cryostat apparatus during operation, and in other embodiments, once the superconducting cryostat apparatus has been cooled to below the superconducting temperature of the superconductors contained therein, the external heat exchange medium can be removed and the superconducting cryostat apparatus can be operated independently of the external heat exchange medium.
摘要翻译： 本发明在一些实施例中提供了超导低温恒温器装置，以及用于在装置内容纳冷却剂并冷却装置的方法。 本发明提供的超导装置包括能够以加压气体形式提供的冷却剂介质的独立供应源。 包含在设备中的冷却剂介质的质量在设备的操作期间是保守的。 在一些实施例中，由本发明提供的超导低温恒温器装置可被配置为在操作期间消除对外部冷却源的需要。 本发明提供的超导低温恒温器装置可以通过在设备内提供一定量的气态冷却介质并密封可密封的容器来冷却。 冷却冷却介质随后通过使用外部热交换介质的间接冷却而冷却至低于装置内所含超导体的临界超导温度。 在一些实施例中，外部热交换介质可以在操作期间保持与超导低温恒温器设备的基本上连续的接触，并且在其它实施例中，一旦超导低温恒温器设备已被冷却到低于包含在其中的超导体的超导温度， 可以除去热交换介质，并且可以独立于外部热交换介质来操作超导低温恒温器。
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公开(公告)号：US09190197B2
公开(公告)日：2015-11-17
申请号：US14191222
申请日：2014-02-26
申请人： Shahin Pourrahimi
发明人： Shahin Pourrahimi
CPC分类号： H01F6/003 , G01R33/3804 , G01R33/3815 , G01R33/46 , G01R33/48 , H01F6/04 , H01F6/06 , H01L23/445 , H01L2924/0002 , H01L2924/00
摘要： Methods and systems are disclosed for saving energy while a superconducting magnet system is not being used and for reducing the time required for the re-establishment of the operating conditions of the system. Traditionally, during an inactive time interval, the temperature of the magnet coils is not allowed to rise, and the system is kept ON, in operating conditions. This results in wasting a large amount of energy for keeping the magnet coils at cryogenic temperatures. Turning the system OFF has never been an option since re-establishment of the operating conditions is very time consuming and costly. The present disclosure offers methods and systems that allow idling of a system in temperatures higher than the magnet coils' intended operating temperature, which results in noticeable savings.
摘要翻译： 公开了用于节省能量的方法和系统，同时不使用超导磁体系统并且减少重新建立系统的操作条件所需的时间。 传统上，在不活动的时间间隔内，在操作条件下，磁体线圈的温度不允许上升，并且系统保持接通。 这导致浪费大量的能量以将磁体线圈保持在低温。 关闭系统从未是一个选择，因为重新建立操作条件非常耗时且昂贵。 本公开提供了允许系统在高于磁体线圈预期工作温度的温度下空转的方法和系统，这导致明显的节省。
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公开(公告)号：US20150243423A1
公开(公告)日：2015-08-27
申请号：US14191222
申请日：2014-02-26
申请人： Shahin Pourrahimi
发明人： Shahin Pourrahimi
CPC分类号： H01F6/003 , G01R33/3804 , G01R33/3815 , G01R33/46 , G01R33/48 , H01F6/04 , H01F6/06 , H01L23/445 , H01L2924/0002 , H01L2924/00
摘要： Methods and systems are disclosed for saving energy while a superconducting magnet system is not being used and for reducing the time required for the re-establishment of the operating conditions of the system. Traditionally, during an inactive time interval, the temperature of the magnet coils is not allowed to rise, and the system is kept ON, in operating conditions. This results in wasting a large amount of energy for keeping the magnet coils at cryogenic temperatures. Turning the system OFF has never been an option since re-establishment of the operating conditions is very time consuming and costly. The present disclosure offers methods and systems that allow idling of a system in temperatures higher than the magnet coils' intended operating temperature, which results in noticeable savings.
摘要翻译： 公开了用于节省能量的方法和系统，同时不使用超导磁体系统并且减少重新建立系统的操作条件所需的时间。 传统上，在不活动的时间间隔内，在操作条件下，磁体线圈的温度不允许上升，并且系统保持接通。 这导致浪费大量的能量以将磁体线圈保持在低温。 关闭系统从未是一个选择，因为重新建立操作条件非常耗时且昂贵。 本公开提供了允许系统在高于磁体线圈预期工作温度的温度下空转的方法和系统，这导致明显的节省。
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公开(公告)号：US20150135732A1
公开(公告)日：2015-05-21
申请号：US14086847
申请日：2013-11-21
申请人： Shahin Pourrahimi , Leslie Bromberg
发明人： Shahin Pourrahimi , Leslie Bromberg
IPC分类号： F25D17/02
CPC分类号： F25D17/02 , F25B2400/06 , F25B2400/24 , F25D19/006 , H01F6/04
摘要： A method, a system, and an article of manufacture are disclosed for cryogenic cooling of systems operating at cryogenic temperatures or higher. Applications of this disclosure are as varied as trucking of meat and vegetable to mine sweeping and MRI systems. A cooling network is formed by coupling blocks of Thermal Energy Storage (TES) modules together with optional thermal switches or valves and optionally with an active cooling component to maintain a cryogenic temperature in a cryostat. The TES modules are combinations of thermal conducting elements to conduct heat and solid storage elements to absorb heat. The cooling component may be one or more cryocoolers for steady state and transient heat transfer conditions and may be coupled with the TES modules via thermal shunt connections. The thermal switches or valves may be deployed within the thermal shunts to control the flow of heat between different TES modules and cooling components, thus reconfiguring the cooling network.
摘要翻译： 公开了用于在低温或更高温度下操作的系统的低温冷却的方法，系统和制品。 本披露的应用与将肉类和蔬菜运送到扫雷和MRI系统不同。 冷却网络通过将热能存储（TES）模块与可选的热开关或阀连接并且任选地具有主动冷却组件以将低温恒温器中的低温维持在一起而形成。 TES模块是导热元件的组合，用于传导热量和固体储存元件以吸收热量。 冷却部件可以是用于稳定状态和瞬态传热条件的一个或多个低温冷却器，并且可以经由热分流连接与TES模块耦合。 热开关或阀可以部署在热分流器内，以控制不同TES模块和冷却组件之间的热流，从而重新配置冷却网络。
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公开(公告)号：US06534718B1
公开(公告)日：2003-03-18
申请号：US10056551
申请日：2002-01-24
IPC分类号： H01B1200
CPC分类号： H01F6/06 , H01F2027/2819 , H01L39/14 , Y10T29/49014
摘要： A reinforced superconducting coil and method for the reinforcement of such coil utilizing composite superconducting wires clad with high-strength material are disclosed.
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公开(公告)号：US06531233B1
公开(公告)日：2003-03-11
申请号：US09848131
申请日：2001-05-03
IPC分类号： B32B1500
CPC分类号： H01L39/02 , Y10T428/12493 , Y10T428/24074
摘要： A superconducting joint between multifilamentary superconducting wires through an optional superconducting medium where at least one of such components is an interconnected filament superconducting part is disclosed. Such joint and method for producing same can include a bridge made of a superconducting medium to contact and make electrical connection with the side of such wire.
摘要翻译： 公开了通过可选的超导介质的多丝超导导线之间的超导接头，其中这些部件中的至少一个是互连的细丝超导部件。 这种接头及其制造方法可以包括由超导介质制成的桥接件，以与该导线的一侧接触并且与其电连接。
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公开(公告)号：US10107543B2
公开(公告)日：2018-10-23
申请号：US14086847
申请日：2013-11-21
申请人： Shahin Pourrahimi , Leslie Bromberg
发明人： Shahin Pourrahimi , Leslie Bromberg
摘要： A method, a system, and an article of manufacture are disclosed for cryogenic cooling of systems operating at cryogenic temperatures or higher. Applications of this disclosure are as varied as trucking of meat and vegetable to mine sweeping and MRI systems. A cooling network is formed by coupling blocks of Thermal Energy Storage (TES) modules together with optional thermal switches or valves and optionally with an active cooling component to maintain a cryogenic temperature in a cryostat. The TES modules are combinations of thermal conducting elements to conduct heat and solid storage elements to absorb heat. The cooling component may be one or more cryocoolers for steady state and transient heat transfer conditions and may be coupled with the TES modules via thermal shunt connections. The thermal switches or valves may be deployed within the thermal shunts to control the flow of heat between different TES modules and cooling components, thus reconfiguring the cooling network.
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