公开(公告)号：US20140121114A1

公开(公告)日：2014-05-01

申请号：US14125003

申请日：2011-12-14

申请人： Qiuliang Wang ,  Xinning Hu ,  Chunzhong Wang ,  Hui Wang ,  Luguang Yan ,  Yinming Dai ,  Baozhi Zhao ,  Jianhua Wang ,  Jianyi xu

发明人： Qiuliang Wang ,  Xinning Hu ,  Chunzhong Wang ,  Hui Wang ,  Luguang Yan ,  Yinming Dai ,  Baozhi Zhao ,  Jianhua Wang ,  Jianyi xu

IPC分类号： G01R33/34

CPC分类号： G01R33/34023 ,  G01R33/3806 ,  G01R33/3815 ,  G01R33/421 ,  H01F6/06

摘要： A self-shield open magnetic resonance imaging superconducting magnet comprises five pairs of coils: shim coils, first main magnetic coils, second main magnetic coils, third main magnetic coils, and shielding coils. The five pairs of coils are symmetric about the center. The shim coils are arranged closest to the center point; the first main magnetic coils, the second main magnetic coils, the third main magnetic coils, and the shielding coils are arranged in sequence outside. The first main magnetic coils are connected with reverse current. The second and third main magnetic coils are connected with positive current for providing the main magnetic field strength. The shim coils are connected with positive current for compensating the magnetic field in the central region. The shielding coils are connected with reverse current for creating a magnetic field opposite to the main magnetic field for compensating the stray magnetic field in the space.

摘要翻译： 自屏蔽开放磁共振成像超导磁体包括五对线圈：垫片线圈，第一主磁线圈，第二主磁线圈，第三主磁线圈和屏蔽线圈。 五对线圈对称关于中心。 垫片线圈最靠近中心点布置; 第一主磁线圈，第二主磁线圈，第三主磁线圈和屏蔽线圈依次布置在外部。 第一主电磁线圈与反向电流相连。 第二和第三主磁线圈与正电流相连以提供主磁场强度。 垫片线圈与正电流连接，用于补偿中心区域的磁场。 屏蔽线圈与反向电流连接，以产生与主磁场相反的磁场，用于补偿空间中的杂散磁场。

公开(公告)号：US08934950B2

公开(公告)日：2015-01-13

申请号：US13824798

申请日：2011-03-03

申请人： Qiuliang Wang ,  Yinming Dai ,  Baozhi Zhao ,  Xinning Hu ,  Luguang Yan ,  Housheng Wang ,  Shunzhong Chen

发明人： Qiuliang Wang ,  Yinming Dai ,  Baozhi Zhao ,  Xinning Hu ,  Luguang Yan ,  Housheng Wang ,  Shunzhong Chen

IPC分类号： G01R33/035 ,  G01R33/3815 ,  G01R33/38 ,  G01R33/3875 ,  G01R33/421

CPC分类号： G01R33/3815 ,  G01R33/3802 ,  G01R33/3875 ,  G01R33/421

摘要： A superconducting magnet system for nuclear magnetic resonance with a high magnetic field and a high degree of homogeneity of magnetic field is provided. The system comprises a main coil and a magnetic field homogeneity compensating coil having a combination of a forward current and a reverse current, and is composed of 24 superconducting coils formed by winding NbTi/Cu low-temperature superconducting wires. The system can produce a magnetic field of 9.4 T within a room-temperature space of 800 mm and can obtain a degree of non-homogeneity of magnetic field less than 0.1 ppm within a spherical volume of 300 mm. The system is equipped with a superconducting magnet inside, and a low-temperature vessel for liquid helium provides a low-temperature environment of 4K which is required for the normal operation of the superconducting magnet. A ferro-magnetic shielding system enables the system to have a good electromagnetic compatibility.

摘要翻译： 提供了一种具有高磁场和高磁场均匀性的核磁共振的超导磁体系统。 该系统包括具有正向电流和反向电流的组合的主线圈和磁场均匀性补偿线圈，并且由通过缠绕NbTi / Cu低温超导线形成的24个超导线圈组成。 该系统可以在800mm的室温空间内产生9.4T的磁场，并且可以在300mm的球形体积内获得小于0.1ppm的非均匀性的磁场。 该系统内装有超导磁体，液氦的低温容器提供4K超低温环境，这是超导磁体正常工作所需要的。 铁磁屏蔽系统使系统具有良好的电磁兼容性。

公开(公告)号：US20130184158A1

公开(公告)日：2013-07-18

申请号：US13824798

申请日：2011-03-03

申请人： Qiuliang Wang ,  Yinming Dai ,  Baozhi Zhao ,  Xinning Hu ,  Luguang Yan ,  Housheng Wang ,  Shunzhong Chen

发明人： Qiuliang Wang ,  Yinming Dai ,  Baozhi Zhao ,  Xinning Hu ,  Luguang Yan ,  Housheng Wang ,  Shunzhong Chen

IPC分类号： G01R33/3815

CPC分类号： G01R33/3815 ,  G01R33/3802 ,  G01R33/3875 ,  G01R33/421

摘要： A superconducting magnet system for nuclear magnetic resonance with a high magnetic field and a high degree of homogeneity of magnetic field is provided. The system comprises a main coil and a magnetic field homogeneity compensating coil having a combination of a forward current and a reverse current, and is composed of 24 superconducting coils formed by winding NbTi/Cu low-temperature superconducting wires. The system can produce a magnetic field of 9.4 T within a room-temperature space of 800 mm and can obtain a degree of non-homogeneity of magnetic field less than 0.1 ppm within a spherical volume of 300 mm. The system is equipped with a superconducting magnet inside, and a low-temperature vessel for liquid helium provides a low-temperature environment of 4K which is required for the normal operation of the superconducting magnet. A ferro-magnetic shielding system enables the system to have a good electromagnetic compatibility.

摘要翻译： 提供了一种具有高磁场和高磁场均匀性的核磁共振的超导磁体系统。 该系统包括具有正向电流和反向电流的组合的主线圈和磁场均匀性补偿线圈，并且由通过缠绕NbTi / Cu低温超导线形成的24个超导线圈组成。 该系统可以在800mm的室温空间内产生9.4T的磁场，并且可以在300mm的球形体积内获得小于0.1ppm的非均匀性的磁场。 该系统内装有超导磁体，液氦的低温容器提供4K超低温环境，这是超导磁体正常工作所需要的。 铁磁屏蔽系统使系统具有良好的电磁兼容性。

公开(公告)号：US08996083B2

公开(公告)日：2015-03-31

申请号：US14125003

申请日：2011-12-14

申请人： Qiuliang Wang ,  Xinning Hu ,  Chunzhong Wang ,  Hui Wang ,  Luguang Yan ,  Yinming Dai ,  Baozhi Zhao ,  Jianhua Wang ,  Jianyi Xu

发明人： Qiuliang Wang ,  Xinning Hu ,  Chunzhong Wang ,  Hui Wang ,  Luguang Yan ,  Yinming Dai ,  Baozhi Zhao ,  Jianhua Wang ,  Jianyi Xu

IPC分类号： G01R33/035 ,  G01R33/34 ,  G01R33/38 ,  G01R33/3815 ,  H01F6/06 ,  G01R33/421

CPC分类号： G01R33/34023 ,  G01R33/3806 ,  G01R33/3815 ,  G01R33/421 ,  H01F6/06

摘要： A self-shield open magnetic resonance imaging superconducting magnet comprises five pairs of coils: shim coils, first main magnetic coils, second main magnetic coils, third main magnetic coils, and shielding coils. The five pairs of coils are symmetric about the center. The shim coils are arranged closest to the center point; the first main magnetic coils, the second main magnetic coils, the third main magnetic coils, and the shielding coils are arranged in sequence outside. The first main magnetic coils are connected with reverse current. The second and third main magnetic coils are connected with positive current for providing the main magnetic field strength. The shim coils are connected with positive current for compensating the magnetic field in the central region. The shielding coils are connected with reverse current for creating a magnetic field opposite to the main magnetic field for compensating the stray magnetic field in the space.

摘要翻译： 自屏蔽开放磁共振成像超导磁体包括五对线圈：垫片线圈，第一主磁线圈，第二主磁线圈，第三主磁线圈和屏蔽线圈。 五对线圈对称关于中心。 垫片线圈最靠近中心点布置; 第一主磁线圈，第二主磁线圈，第三主磁线圈和屏蔽线圈依次布置在外部。 第一主电磁线圈与反向电流相连。 第二和第三主磁线圈与正电流相连以提供主磁场强度。 垫片线圈与正电流连接，用于补偿中心区域的磁场。 屏蔽线圈与反向电流连接，以产生与主磁场相反的磁场，用于补偿空间中的杂散磁场。

公开(公告)号：US08570127B2

公开(公告)日：2013-10-29

申请号：US13520511

申请日：2010-07-01

申请人： Qiuliang Wang ,  Xinning Hu ,  Yinming Dai ,  Baozhi Zhao ,  Luguang Yan ,  Shousen Song ,  Housheng Wang ,  Yuanzhong Lei ,  Hui Wang

发明人： Qiuliang Wang ,  Xinning Hu ,  Yinming Dai ,  Baozhi Zhao ,  Luguang Yan ,  Shousen Song ,  Housheng Wang ,  Yuanzhong Lei ,  Hui Wang

IPC分类号： H01F6/00

CPC分类号： H01F6/04 ,  H01F6/06

摘要： A high magnetic field superconducting magnet system with large crossing warm bore is disclosed, a superconducting coil thereof includes a low temperature superconducting coil and a high temperature superconducting coil. The superconducting coils are connected to a thermal shield and a flange of a low temperature container by a supporting drawbar, thus the superconducting coils as a whole are supported inside the low temperature container. A thermal switch is connected to a primary cold head and a secondary cold head of the cryocooler. The secondary cold head of the cryocooler is connected to a magnet-reinforced supporting flange at the two ends of the low temperature superconducting coil and the high temperature superconducting coil by a cold conduction strip. The superconducting magnet system has a room temperature bore in horizontal direction and a room temperature bore in vertical direction. A thermal shield outside the room temperature bore in horizontal direction is used for preventing thermal radiation by the room temperature bore in horizontal direction to the superconducting coils. A separation supporting frame separates the low temperature superconducting coil and the high temperature superconducting coil into two parts, such that a two-dimensional room temperature space can be included inside the superconducting magnet when the superconducting magnet system is formed as a whole.

摘要翻译： 公开了一种具有大交叉暖孔的高磁场超导磁体系统，其超导线圈包括低温超导线圈和高温超导线圈。 超导线圈通过支撑牵引杆连接到热屏蔽和低温容器的凸缘，因此整个超导线圈被支撑在低温容器内。 热开关连接到低温冷却器的主冷头和次冷头。 低温冷却器的二次冷头通过冷传导带连接到低温超导线圈和高温超导线圈的两端的磁体加强支撑凸缘。 超导磁体系统在水平方向上具有室温孔，在垂直方向上具有室温孔。 水平方向的室温膛外的热屏蔽用于防止室内温度对水平方向的超导线圈的热辐射。 分离支撑框架将低温超导线圈和高温超导线圈分成两部分，使得当超导磁体整体形成时，可以在超导磁体内部包含二维室温空间。

公开(公告)号：US20130033346A1

公开(公告)日：2013-02-07

申请号：US13520511

申请日：2010-07-01

申请人： Qiuliang Wang ,  Xinning Hu ,  Yinming Dai ,  Baozhi Zhao ,  Luguang Yan ,  Shousen Song ,  Housheng Wang ,  Yuanzhong Lei ,  Hui Wang

发明人： Qiuliang Wang ,  Xinning Hu ,  Yinming Dai ,  Baozhi Zhao ,  Luguang Yan ,  Shousen Song ,  Housheng Wang ,  Yuanzhong Lei ,  Hui Wang

IPC分类号： H01F6/00

CPC分类号： H01F6/04 ,  H01F6/06

摘要： A high magnetic field superconducting magnet system with large crossing warm bore is disclosed, a superconducting coil thereof includes a low temperature superconducting coil and a high temperature superconducting coil. The superconducting coils are connected to a thermal shield and a flange of a low temperature container by a supporting drawbar, thus the superconducting coils as a whole are supported inside the low temperature container. A thermal switch is connected to a primary cold head and a secondary cold head of the cryocooler. The secondary cold head of the cryocooler is connected to a magnet-reinforced supporting flange at the two ends of the low temperature superconducting coil and the high temperature superconducting coil by a cold conduction strip. The superconducting magnet system has a room temperature bore in horizontal direction and a room temperature bore in vertical direction. A thermal shield outside the room temperature bore in horizontal direction is used for preventing thermal radiation by the room temperature bore in horizontal direction to the superconducting coils. A separation supporting frame separates the low temperature superconducting coil and the high temperature superconducting coil into two parts, such that a two-dimensional room temperature space can be included inside the superconducting magnet when the superconducting magnet system is formed as a whole.

摘要翻译： 公开了一种具有大交叉暖孔的高磁场超导磁体系统，其超导线圈包括低温超导线圈和高温超导线圈。 超导线圈通过支撑牵引杆连接到热屏蔽和低温容器的凸缘，因此整个超导线圈被支撑在低温容器内。 热开关连接到低温冷却器的主冷头和次冷头。 低温冷却器的二次冷头通过冷传导带连接到低温超导线圈和高温超导线圈的两端的磁体加强支撑凸缘。 超导磁体系统在水平方向上具有室温孔，在垂直方向上具有室温孔。 水平方向的室温膛外的热屏蔽用于防止室内温度对水平方向的超导线圈的热辐射。 分离支撑框架将低温超导线圈和高温超导线圈分成两部分，使得当超导磁体整体形成时，可以在超导磁体内部包含二维室温空间。