公开(公告)号：US09666344B2

公开(公告)日：2017-05-30

申请号：US14759261

申请日：2013-08-19

Applicant: Institute of Electrical Engineering, Chinese Academy of Sciences

Inventor： Qiuliang Wang ,  Xinning Hu ,  Zhipeng Ni ,  Lankai Li ,  Luguang Yan ,  Yi Li ,  Yinming Dai

IPC: H01F5/00 ,  H01F6/04 ,  G01R33/38 ,  G01R33/3815 ,  H01F6/06

CPC classification number: H01F6/04 ,  G01R33/3804 ,  G01R33/3815 ,  H01F6/06

Abstract: A superconducting magnet system for head imaging is disclosed which includes a cryocooler, a high-pressure helium container, a self-excitation heat pipe and a superconducting magnet. A second stage coldhead of the cryocooler is connected to the high-pressure helium container for converting the helium gas in the high-pressure helium container into liquid helium. The self-excitation heat pipe forms a closed cooling loop, and liquid helium in the high-pressure helium container flows circularly in the self-excitation heat pipe. The self-excitation heat pipe cools the superconducting magnet, wherein part of the liquid helium in the self-excitation heat pipe is converted into the helium gas due to the heat disturbance generated by the superconducting magnet, and the helium gas interacts with the liquid helium to generate liquid helium vibration.

公开(公告)号：US20170372824A1

公开(公告)日：2017-12-28

申请号：US15547263

申请日：2016-01-12

Applicant: Institute of Electrical Engineering, Chinese Academy of Sciences

Inventor： Qiuliang Wang ,  Xinning Hu ,  Yinming Dai

IPC: H01F6/06 ,  H01F6/04

CPC classification number: H01F6/06 ,  H01F6/04

Abstract: A strong-magnetic focused magnet system with a terahertz source includes a first superconducting main coil and a second superconducting main coil. The second superconducting main coil surrounds the outer surface of the first superconducting main coil, and the second superconducting main coil is coaxial with the first superconducting main coil.

公开(公告)号：US20150011395A1

公开(公告)日：2015-01-08

申请号：US14375399

申请日：2012-09-27

Applicant: Institute of Electrical Engineering, Chinese Academy of Sciences

Inventor： Xinning Hu ,  Qiuliang Wang ,  Yinming Dai ,  Baozhi Zhao ,  Hui Wang ,  Chunyan Cui

IPC: H01F6/04 ,  H01F6/06 ,  F25D3/10

CPC classification number: H01F6/04 ,  F25B2400/17 ,  F25D3/10 ,  H01F6/06

Abstract: A free liquid helium volatilization superconductive magnetic suspension device includes a low temperature container, a refrigeration, a cold screen, a liquid helium container, a superconductive rotor, a suspension coil, a rotor chamber, a liquid tube, a condenser and a pole-axis displacement sensor. The heat generated by the wires of the suspension coil can be prevented transferring to the liquid helium container by the room temperature current lead joint, the high temperature superconducting current lead joint and low temperature superconducting current lead joint. Therefore the volatilization of the liquid helium in the liquid helium container can be reduced. The status of free liquid helium volatilization in the liquid helium container can be reached through refrigeration cooling condenser to liquefy the helium. The device needs not to be input the liquid helium time after time and can run independently for a long term.

Abstract translation: 无液液氦挥发超导磁悬浮装置包括低温容器，制冷，冷屏，液氦容器，超导转子，悬挂线圈，转子室，液体管，冷凝器和极轴 位移传感器。 由悬挂线圈的电线产生的热量可以防止通过室温电流引线接头，高温超导电流引线接头和低温超导电流引线接头转移到液氦容器。 因此，可以减少液氦容器中液氦的挥发。 液氦容器中游离液氦挥发的状态可以通过制冷冷凝器达到氦液化。 该装置不需要在时间后输入液氦时间，并且可以长期独立运行。

公开(公告)号：US10062487B2

公开(公告)日：2018-08-28

申请号：US15547263

申请日：2016-01-12

Applicant: Institute of Electrical Engineering, Chinese Academy of Sciences

Inventor： Qiuliang Wang ,  Xinning Hu ,  Yinming Dai

IPC: H01F7/00 ,  H01F6/06 ,  H01F6/04

CPC classification number: H01F6/06 ,  H01F6/04

Abstract: A strong-magnetic focused magnet system with a terahertz source includes a first superconducting main coil and a second superconducting main coil. The second superconducting main coil surrounds the outer surface of the first superconducting main coil, and the second superconducting main coil is coaxial with the first superconducting main coil.

公开(公告)号：US20150247949A1

公开(公告)日：2015-09-03

申请号：US14427829

申请日：2013-08-19

Applicant: INSTITUTE OF ELECTRICAL ENGINEERING, CHINESE ACADEMY OF SCIENCES

Inventor： Xinning Hu ,  Qiuliang Wang ,  Chunyan Cui ,  Hui Wang ,  Yinming Dai

IPC: G01V7/02 ,  G01R33/12

CPC classification number: G01V7/02 ,  G01R33/1238 ,  G01R33/1261 ,  G01V7/00

Abstract: A low-temperature superconducting device for measuring gravity, includes a low-temperature container, a cryocooler, a rotor chamber, a superconducting rotor, an upper levitation coil, a lower levitation coil, an upper electrode, an intermediate electrode, a lower electrode, a magnetic shielding chamber and a superconducting quantum interference device. By cooling the whole low-temperature superconducting device using a cryocooler, the intermediate electrode disposed in the body of the magnetic shielding chamber will generate an output voltage when the superconducting rotor is displaced due to a change of gravity. Thus, the superconducting quantum interference device can make the superconducting rotor return to the central balance position by adjusting the operating current of the upper levitation coil or the lower levitation coil. A change of gravity can be determined based on the operating current fed back to the upper levitation coil or the lower levitation coil.

Abstract translation: 一种用于测量重力的低温超导装置包括低温容器，低温冷却器，转子室，超导转子，上部悬浮线圈，下部悬浮线圈，上部电极，中间电极，下部电极， 磁屏蔽室和超导量子干涉装置。 通过使用低温冷却器冷却整个低温超导装置，当超导转子由于重力的变化而移动时，设置在磁屏蔽室的主体中的中间电极将产生输出电压。 因此，超导量子干涉装置可以通过调节上部悬浮线圈或下部悬浮线圈的工作电流使超导转子返回到中心平衡位置。 可以基于反馈到上部悬浮线圈或下部悬浮线圈的工作电流来确定重力变化。

公开(公告)号：US09612356B2

公开(公告)日：2017-04-04

申请号：US14427829

申请日：2013-08-19

Applicant: Institute of Electrical Engineering, Chinese Academy of Sciences

Inventor： Xinning Hu ,  Qiuliang Wang ,  Chunyan Cui ,  Hui Wang ,  Yinming Dai

IPC: G01V7/00 ,  G01V7/02 ,  G01R33/12

CPC classification number: G01V7/02 ,  G01R33/1238 ,  G01R33/1261 ,  G01V7/00

Abstract: A low-temperature superconducting device for measuring gravity, includes a low-temperature container, a cryocooler, a rotor chamber, a superconducting rotor, an upper levitation coil, a lower levitation coil, an upper electrode, an intermediate electrode, a lower electrode, a magnetic shielding chamber and a superconducting quantum interference device. By cooling the whole low-temperature superconducting device using a cryocooler, the intermediate electrode disposed in the body of the magnetic shielding chamber will generate an output voltage when the superconducting rotor is displaced due to a change of gravity. Thus, the superconducting quantum interference device can make the superconducting rotor return to the central balance position by adjusting the operating current of the upper levitation coil or the lower levitation coil. A change of gravity can be determined based on the operating current fed back to the upper levitation coil or the lower levitation coil.

公开(公告)号：US20150348689A1

公开(公告)日：2015-12-03

申请号：US14759261

申请日：2013-08-19

Applicant: INSTITUTE OF ELECTRICAL ENGINEERING, CHINESE ACADEMY OF SCIENCES

Inventor： Qiuliang Wang ,  Xinning Hu ,  Zhipeng Ni ,  Lankai Li ,  Luguang Yan ,  Yi Li ,  Yinming Dai

IPC: H01F6/04 ,  G01R33/38 ,  G01R33/3815

CPC classification number: H01F6/04 ,  G01R33/3804 ,  G01R33/3815 ,  H01F6/06

Abstract: A superconducting magnet system for head imaging is disclosed which includes a cryocooler, a high-pressure helium container, a self-excitation heat pipe and a superconducting magnet. A second stage coldhead of the cryocooler is connected to the high-pressure helium container for converting the helium gas in the high-pressure helium container into liquid helium. The self-excitation heat pipe forms a closed cooling loop, and liquid helium in the high-pressure helium container flows circularly in the self-excitation heat pipe. The self-excitation heat pipe cools the superconducting magnet, wherein part of the liquid helium in the self-excitation heat pipe is converted into the helium gas due to the heat disturbance generated by the superconducting magnet, and the helium gas interacts with the liquid helium to generate liquid helium vibration.

Abstract translation: 公开了一种用于头部成像的超导磁体系统，其包括低温冷却器，高压氦容器，自激热管和超导磁体。 冷冻机的第二级冷头连接到高压氦容器，用于将高压氦容器中的氦气转化为液氦。 自激热管形成封闭的冷却回路，高压氦气容器中的液氦在自激热管中循环流动。 自激热管冷却超导磁体，其中由于超导磁体产生的热干扰，自激热管中的部分液氦转化为氦气，氦气与液氦相互作用 产生液氦振动。

公开(公告)号：US20140128267A1

公开(公告)日：2014-05-08

申请号：US14127887

申请日：2011-12-14

Applicant: INSTITUTE OF ELECTRICAL ENGINEERING, CHINESE ACADEMY OF SCIENCES

Inventor： Qiuliang Wang ,  Hui Wang ,  Xinning Hu ,  Yinming Dai ,  Luguang Yan ,  Jianyi Xu ,  Housheng Wang ,  Jianhua Wang

IPC: G01R33/34

CPC classification number: G01R33/34023 ,  G01R33/3806 ,  G01R33/3815 ,  G01R33/3875 ,  G01R33/421

Abstract: An open type nuclear magnetic resonance magnet system having an iron ring member. A superconducting coil and a superconducting switch form a closed-loop current circuit to generate a magnetic field. The generated magnetic field gains a magnetic flux circuit and executes magnetic field shielding through upper and lower iron yokes and a lateral iron yoke. The magnet system generates a desired magnetic field in a magnet imaging central area via the superconducting coil. To balance the extremely high electromagnetic force between the superconducting coil and the upper and lower iron yokes, an annular iron ring is mounted in a space defined by an inner perimeter wall of in a cryogenic container. The magnetic field distribution between the superconducting coil and the upper and lower iron yokes is changed via the iron ring, so that the electromagnetic interaction force therebetween is reduced.

Abstract translation: 一种具有铁环构件的开式核磁共振磁体系统。 超导线圈和超导开关形成闭环电流电路以产生磁场。 所产生的磁场获得磁通电路，并通过上下铁轭和一个侧铁轭实现磁场屏蔽。 磁体系统通过超导线圈在磁体成像中心区域产生期望的磁场。 为了平衡超导线圈和上下铁轭之间的极高电磁力，环形铁环安装在由低温容器内的内周壁限定的空间中。 超导线圈与上下铁心之间的磁场分布通过铁环变化，从而减小了它们之间的电磁相互作用力。