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1. 发明专利

DE4209518C2 未知
公开(公告)号：DE4209518C2
公开(公告)日：2000-06-15
申请号：DE4209518
申请日：1992-03-24
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： FUKUMOTO HIDESHI , KAMEOKA YOKO , YOSHIOKA KEN , TAKIZAWA TERUHIRO , SONOBE TADASI , SUZUKI FUMIO , KASAHARA NAOKI , GOTO FUMIHIKO , SAKAMOTO SHIGERU , SHIBATA MASAYUKI
IPC分类号： H01F6/06 , F17C13/00 , H01F6/00 , H01F6/02

2. 发明专利

DE4228537C2 未知
公开(公告)号：DE4228537C2
公开(公告)日：1998-02-19
申请号：DE4228537
申请日：1992-08-27
申请人： HITACHI LTD
发明人： KAMEOKA YOKO , FUKUMOTO HIDESHI , YOSHIOKA KEN , TAKIZAWA TERUHIRO , SONOBE TADASI , SUZUKI FUMIO
IPC分类号： H01F6/00 , H01F6/02

3. 发明专利

DE69310822T2 未知
公开(公告)号：DE69310822T2
公开(公告)日：1997-08-28
申请号：DE69310822
申请日：1993-07-09
申请人： HITACHI LTD
发明人： SAITOH TOSHIO , TAKIZAWA TERUHIRO , MAKI NAOKI , KOBAYASHI TAKASHI , SHIBATA MASAYUKI , YOSHIOKA KEN , SONOBE TADASI , SUZUKI FUMIO
IPC分类号： B60L13/04 , B61B13/08 , H01F6/02 , H02H7/00
摘要： A superconducting magnet abnormality detection and protection apparatus is for early and surely detecting abnormality in superconducting coils (2) mounted on a vehicle (80) and protecting the superconducting coils. Magnetic flux detecting devices (CA1-CA4) are mounted inside an outer vessel (3), which is a vacuum container of a superconducting magnet (1), so as to be opposite to the superconducting coil (2). Voltages induced in the magnetic flux detecting devices are detected. Voltage signals are led to a decision device (10). By monitoring the change of the voltage signals with time in a comparing judgment device (12), it is determined whether there is an abnormality. If there is an abnormality, an alarm indicator (15) informs of an abnormal state, and a protection device (16) takes protection measures such as interruption of the current of the superconducting magnet. Owing to such configuration, heat does not penetrate from the outside into the superconducting coil via instrumentation lead wires of the magnetic flux detecting devices. Magnitudes of vibration and displacement of the superconducting coil (2) can be detected without contacting the superconducting coil. By always monitoring these signals, it becomes possible to early detect an abnormality in the superconducting coil and protect it.

4. 发明专利

DE69310822D1 未知
公开(公告)号：DE69310822D1
公开(公告)日：1997-06-26
申请号：DE69310822
申请日：1993-07-09
申请人： HITACHI LTD
发明人： SAITOH TOSHIO , TAKIZAWA TERUHIRO , MAKI NAOKI , KOBAYASHI TAKASHI , SHIBATA MASAYUKI , YOSHIOKA KEN , SONOBE TADASI , SUZUKI FUMIO
IPC分类号： B60L13/04 , B61B13/08 , H01F6/02 , H02H7/00
摘要： A superconducting magnet abnormality detection and protection apparatus is for early and surely detecting abnormality in superconducting coils (2) mounted on a vehicle (80) and protecting the superconducting coils. Magnetic flux detecting devices (CA1-CA4) are mounted inside an outer vessel (3), which is a vacuum container of a superconducting magnet (1), so as to be opposite to the superconducting coil (2). Voltages induced in the magnetic flux detecting devices are detected. Voltage signals are led to a decision device (10). By monitoring the change of the voltage signals with time in a comparing judgment device (12), it is determined whether there is an abnormality. If there is an abnormality, an alarm indicator (15) informs of an abnormal state, and a protection device (16) takes protection measures such as interruption of the current of the superconducting magnet. Owing to such configuration, heat does not penetrate from the outside into the superconducting coil via instrumentation lead wires of the magnetic flux detecting devices. Magnitudes of vibration and displacement of the superconducting coil (2) can be detected without contacting the superconducting coil. By always monitoring these signals, it becomes possible to early detect an abnormality in the superconducting coil and protect it.

5. 发明专利

CA2063528C COIL STRUCTURE AND COIL CONTAINER 未知
公开(公告)号：CA2063528C
公开(公告)日：1996-09-24
申请号：CA2063528
申请日：1992-03-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： FUKUMOTO HIDESHI , KAMEOKA YOKO , YOSHIOKA KEN , TAKIZAWA TERUHIRO , SONOBE TADASI , SUZUKI FUMIO , KASAHARA NAOKI , GOTO FUMIHIKO , SAKAMOTO SHIGERU , SHIBATA MASAYUKI
IPC分类号： H01F6/06 , F17C13/00 , H01F6/00 , H01F6/02
摘要： There is disclosed a coil structure which is rapidly energized or excited, and reduces the generation of heat in a coil container by eddy current due to a dynamic disturbance such as vibration and a magnetic field fluctuation, thereby suppressing the generation of a quench. The coil container is constituted by a lowresistivity material, and a high-resistivity portion is provided at at least one portion of the coil container in the direction of the periphery of the coil container. The high-resistivity portion is provided at a position where a vibration displacement is small or a magnetic field fluctuation is small. When the coil structure is to be energized or excited, the eddy current produced in the direction of the periphery of the superconductingcoil container can be reduced at the high-resistivity portion, and when the dynamic disturbance develops, the generation of heat by the eddy current is suppressed by the low-resistivity material.

6. 发明专利

CA2063528A1 COIL STRUCTURE AND COIL CONTAINER 未知
公开(公告)号：CA2063528A1
公开(公告)日：1992-09-26
申请号：CA2063528
申请日：1992-03-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： FUKUMOTO HIDESHI , KAMEOKA YOKO , YOSHIOKA KEN , TAKIZAWA TERUHIRO , SONOBE TADASI , SUZUKI FUMIO , KASAHARA NAOKI , GOTO FUMIHIKO , SAKAMOTO SHIGERU , SHIBATA MASAYUKI
IPC分类号： H01F6/06 , F17C13/00 , H01F6/00 , H01F6/02 , H01F7/22

7. 发明专利

DE4209137A1 Superconducting coil and coil container - contg. cooling medium in which coil is immersed and heat shielding plate which surrounds circumference of coil container and vacuum chamber which accepts plate and container 未知
公开(公告)号：DE4209137A1
公开(公告)日：1992-09-24
申请号：DE4209137
申请日：1992-03-20
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SONOBE TADASI , TAKIZAWA TERUHIRO , SUZUKI FUMIO , KASAHARA NAOKI , GOTO FUMIHIKO , FUKUMOTO HIDESHI , KAMEOKA YOKO , SAKAMOTO SHIGERU
IPC分类号： H01F6/06 , G01R33/421 , H01F6/00 , H01F6/04
摘要： The heat shielding plate contains an arrangement of a section (7a, 14a) of high electrical resistance and another section (7b, 14b) with high thermal conductivity, which are arranged both alternating int he circumferential direction of the superconducting coil (1). The heat shielding plate (7, 14) contains an arrangement of a non magnetic material and aluminium or copper, which are alternatiely arranged in the circumferential direction of the superconducting coil. The non magnetic material is a non rust steel, austenitic super alloy or Zirconium. USE/ADVANTAGE - Reduces eddy currents without interfering with heat shielding effect, if magnetic alternating field exists or appts. is exposed to mechanical vibrations, which can effect alternations in mutual inductance. Gives method for prodn. of heat shielding plates for superconducting coil.

8. 发明专利

DE4209518A1 Superconducting magnet system and holder - generates strong magnetic field when electric current flows through superconductive, magnetic coil 未知
公开(公告)号：DE4209518A1
公开(公告)日：1992-10-01
申请号：DE4209518
申请日：1992-03-24
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： FUKUMOTO HIDESHI , KAMEOKA YOKO , YOSHIOKA KEN , TAKIZAWA TERUHIRO , SONOBE TADASI , SUZUKI FUMIO , KASAHARA NAOKI , GOTO FUMIHIKO , SAKAMOTO SHIGERU , SHIBATA MASAYUKI
IPC分类号： H01F6/06 , F17C13/00 , H01F6/00 , H01F6/02
摘要： The superconducting magnet spool construction is activated or excited very quickly. The generation of heat in a magnet spool holder (2) by an eddy current is reduced and quenching is surpassed. The eddy curent is induced from a dynamic current e.g. vibration or magnetic field oscillatin. The holder is of low specific resistance material. A part (11) with high specific resistance is provided at at least one section of the holder circumference. This part is at a place where vibration is small. When the spool is acitvated the eddy currents in the circumferential direction are reduced at the high resistance part (11). When the dynamic current is produced the generation of heat by the eddy current from the low resistance material (10) is supressed. USE/ADVANTAGE - Prevents transfer from superconducting to a normal conducting state i.e. quenching, and supresses generation of heat from eddy currents without affecting rise time needed to reach given value of operating current.

9. 发明专利

CA2078608A1 SUPERCONDUCTING MAGNET 未知
公开(公告)号：CA2078608A1
公开(公告)日：1993-03-20
申请号：CA2078608
申请日：1992-09-18
申请人： HITACHI LTD
发明人： KAMEOKA YOKO , FUKUMOTO HIDESHI , YOSHIOKA KEN , TAKIZAWA TERUHIRO , SONOBE TADASI , SUZUKI FUMIO
IPC分类号： H01F6/00 , H01F6/02

10. 发明专利

CA2078608C SUPERCONDUCTING MAGNET 未知
公开(公告)号：CA2078608C
公开(公告)日：1996-04-16
申请号：CA2078608
申请日：1992-09-18
申请人： HITACHI LTD
发明人： KAMEOKA YOKO , FUKUMOTO HIDESHI , YOSHIOKA KEN , TAKIZAWA TERUHIRO , SONOBE TADASI , SUZUKI FUMIO
IPC分类号： H01F6/00 , H01F6/02 , H01F7/22
摘要： A superconducting magnet having a beam member installed diametrically in a ring superconducting coil container for supporting hoop stress of the coil being partly or entirely composed of electrical insulators or high resistivity materials. Alternatively, a portion of the radiant heat shield covering the beam member can be partly or entirely composed of electrical insulators or high resistivity materials. In accordance with the above arrangements, eddy current generated in the coil container when the container crosses a magnetic field caused by eddy current generated in the radiant heat shield when the shield crosses a strong magnetic field caused by the superconducting coil with relative vibration of the heat shield to the coil by a dynamic cause can be suppressed. Accordingly, heat generation in the superconducting coil container can be reduced, and consequently, quenching of the superconductor can be reduced.

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