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1. 发明专利

JP2000102112A SUPERCONDUCTING MAGNET FOR MAGNETICALLY LEVITATED TRAIN 失效
公开(公告)号：JP2000102112A
公开(公告)日：2000-04-07
申请号：JP26832898
申请日：1998-09-22
申请人： HITACHI LTD , TOKAI RYOKAKU TETSUDO KK , RAILWAY TECHNICAL RES INST
发明人： FURUKAWA YOKO , FUKUMOTO EIJI , SHIBATA MASAYUKI , TAKIZAWA TERUHIRO , TERAI MOTOAKI , INETAMA SATORU , MIZUTANI TAKASHI
IPC分类号： B61B13/08 , B60L13/03 , H01F6/00 , H01L39/04
摘要： PROBLEM TO BE SOLVED: To improve reliability of a superconducting magnet against quench prevention by reducing eddy current heat generation due to magnetic field change caused by vehicle oscillation during traveling. SOLUTION: The thickness of a low electrical resistance material layer 20 is partly changed, where the layer covers a surface or is plated on the surface of a superconducting coil accommodating vessel 2 which cools a superconducting coil 1 and fixes it to a specified position. In particular, the thickness of low electric resistance material layers 21, 22 of levitating direction upper side region where an eddy current is liable to be generated by magnetic field change of low frequency is increased, and the electric resistance value is reduced. A radiant heat shield and a vacuum thermal insulation vessel which surround the accommodating vessel 2 may be constituted of low electric resistance material in which the plate thickness in a region where an eddy current is liable to be generated in increased. The thickness of the low electric resistance material layer may not be increased but material having low resistivity may be used.

2. 发明专利

JPH06208920A MAGNETIC LEVITATION VEHICLE 失效
公开(公告)号：JPH06208920A
公开(公告)日：1994-07-26
申请号：JP17576292
申请日：1992-07-02
申请人： HITACHI LTD , HITACHI ENG CO LTD , RAILWAY TECHNICAL RES INST
发明人： SONOBE TADASHI , TAKIZAWA TERUHIRO , SUZUKI FUMIO , GOTO FUMIHIKO , NAKAJIMA HIROSHI , SUZUKI EIJI , IWAMATSU MASARU
IPC分类号： H01F6/00 , H01F7/20 , H01F7/22
摘要： PURPOSE:To alleviate generation of heat from a superconducting coil itself or thereabout when a vehicle is running. CONSTITUTION:The magnetic levitation vehicle comprises a truck frame 4 fixed, by means of a plurality of bolts 5, 5,..., with an outer tank 3 containing a plurality of superconducting coils 1, 1,... while arranging in the longitudinal direction. Assuming that an n-th higher harmonic 10 has highest spectral intensity among spatial higher harmonic field in running direction produced by a ground coil and the wavelength of the n-order higher harmonic 10 viewed from the running vehicle side is lambdan, pitch lP of the bolt 5 is set according to a formula; lp=((2M-1)/4+ or -0.15).lambdan (m is a natural number).

3. 发明专利

JPH06208919A MAGNETIC LEVITATION TRAIN 失效
公开(公告)号：JPH06208919A
公开(公告)日：1994-07-26
申请号：JP17576192
申请日：1992-07-02
申请人： HITACHI LTD , RAILWAY TECHNICAL RES INST
发明人： SONOBE TADASHI , TAKIZAWA TERUHIRO , SUZUKI FUMIO , HIRATA TOSUKE , SAKAMOTO SHIGERU , USAMI SABURO , SAITO TOSHIO , KAMEOKA YOKO , MIYATA NAOHIKO , KAMISHIRO KUNIO , TSUCHISHIMA HIDEO
IPC分类号： H01F6/00 , H01F7/22
摘要： PURPOSE:To reduce generation of heat from a superconducting coil itself and thereabout when a train is running. CONSTITUTION:A plurality of bolt holes 6, 6,... penetrate through an outer tank 3 in the direction of a truck frame 4 while bolt holes 12 penetrate through the outer tank 3 at the front and rear ends thereof in the direction of the truck frame 4. A bolt fixing base 11 provided with these bolt holes is formed integrally with the outer tank 3 which is secured to the truck frame 4 by means of bolts 5 inserted into the bolt holes 6, 12.

4. 发明专利

JPH06140239A SUPERCONDUCTING MAGNET STRUCTURE 失效
公开(公告)号：JPH06140239A
公开(公告)日：1994-05-20
申请号：JP29116992
申请日：1992-10-29
申请人： HITACHI LTD , RAILWAY TECHNICAL RES INST
发明人： SAKAMOTO SHIGERU , SONOBE TADASHI , TAKIZAWA TERUHIRO , SUZUKI FUMIO , HIRATA TOSUKE
IPC分类号： H01F6/00 , H01F7/22
摘要： PURPOSE:To provide a supporting and fixing method for an inner vessel, which houses a superconducting coil, effective for prevention of destruction of a superconductive state. CONSTITUTION:Load-supporting bodies 1, 2 and 3, having suitable rigidity, are arranged properly in accordance with the deformation mode. Especially, in order to suppress the deformation mode in the outside direction of a superconducting coil surface, the load-supporting body 3 is provided on both outside and inside circumferences of the inner vessel 5, and they are supported and fixed rigidly. The load-supporting body 1 and one end of the load-supporting body 3 are fixed to the inner vessel, and the other end 9 of the load-supporting body 3 is fixed to the side face of the outer vessel 7 on the side having high rigidity structure, and the inner vessel 5 is cantilever-supported from the position of low vibration external force. As a result, the vibration, with which the surface of the superconducting coil is deformed toward outside direction, of the inner vessel, leading to the destruction of a superconducting state, can be prevented, a low vibration state can be accomplished, and the reliability of the superconducting magnet structure can be improved.

5. 发明专利

JPH05206529A PERMANENT CURRENT SWITCH AND SUPERCONDUCTING DEVICE 失效
公开(公告)号：JPH05206529A
公开(公告)日：1993-08-13
申请号：JP1073992
申请日：1992-01-24
申请人： HITACHI LTD , RAILWAY TECHNICAL RES INST
发明人： YOSHIDA CHIKASHI , TAKIZAWA TERUHIRO , NEMOTO KAORU
IPC分类号： H01L39/20
摘要： PURPOSE:To avoid the quenching of a PCS element by a method wherein a circulation current running in a closed loop part is satisfactorily restricted even if a with-time changing magnetic field is impressed while lessening the change in the closed loop part space regardless of any mechanical oscillation. CONSTITUTION:Within the title permanent current switches 2 formed by disposing the heating means of heating switch circuit which is switch-controlling a superconducting coil in an array, the lead wire 8 of the switches 2 and that of the super-conducting coil are connected through the intermediary of an excellent electric conductor plate which is fixed to the permanent switches 2 through the intermediary of an insulator 11 so as to compose the title superconducting device.

6. 发明专利

JPH05217740A SUPERCONDUCTING MAGNET STRUCTURE FOR MAGNETIC LEVITATION TRAIN 失效
公开(公告)号：JPH05217740A
公开(公告)日：1993-08-27
申请号：JP2226492
申请日：1992-02-07
申请人： HITACHI LTD , RAILWAY TECHNICAL RES INST , HITACHI ENG CO LTD
发明人： SAKAMOTO SHIGERU , TANAKA KIHACHIRO , HIRATA TOSUKE , SONOBE TADASHI , TAKIZAWA TERUHIRO , SUZUKI FUMIO , GOTO FUMIHIKO
IPC分类号： B60L13/04 , H01F7/20 , H02K41/02
摘要： PURPOSE:To provide a method of supporting a superconducting magnet in such a manner that a maximum natural frequency is achieved with limited rigidity. CONSTITUTION:A superconducting magnet structure includes supports 1 having great rigidity in three directions, supports 4 having great rigidity only toward the outside of the magnet surface, and supports 3 having great rigidity only toward the inside of the magnet surface. These supports are arranged properly depending on the rotational inertia of the superconducting magnet.

7. 发明专利

JPH10135025A SUPERCONDUCTING MAGNET AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JPH10135025A
公开(公告)日：1998-05-22
申请号：JP28790496
申请日：1996-10-30
申请人： HITACHI LTD , TOKAI RYOKAKU TETSUDO KK
发明人： ISHIZUKI TOSHIO , USAMI SABURO , EJIMA HIDEHIRO , TAKIZAWA TERUHIRO , SONOBE TADASHI , SUZUKI FUMIO , WATANABE HIROYUKI , TERAI MOTOAKI , INETAMA SATORU
IPC分类号： H01F6/06 , H01F6/00
摘要： PROBLEM TO BE SOLVED: To eliminate displacement movement following thermal contraction difference between constituting materials, for preventing occurrence of quenching by relating to a spacer bracket assigned between a superconducting coil and an inner bath, forming it with a material larger than the superconducting coil in thermal contraction amount. SOLUTION: For a superconducting coil 1,2-piece spacer brackets 4a and 4b are pressurized and assigned through an insulating material 3, with both facing surfaces integrated by welding, thus the superconducing coil 1 fixed. Then, in order that the compression-elasticity-distortion which is larger than the thermal-contraction-distortion difference between a spacer bracket and an inner bath be kept, with 2-piece inner baths 2a and 2b pressurized, their facing surfaces are welded and jointed. The spacer bracket is made of high- tensile aluminum, with the order of thermal contraction amount for component materials being spacer bracket>supperconducting coil 1 > inner bath (stainless steel). Thus, even when assembled under pressurizing force 0 at normal temperature, rigid fixing is provided between the superconducting coil 1 and the spacer bracket at LHe temperature of operation temperature.

8. 发明专利

JPH0672324A MAGNETIC SHIELD STRUCTURE PROVIDED WITH DISCONNECTING COIL 失效
公开(公告)号：JPH0672324A
公开(公告)日：1994-03-15
申请号：JP22817892
申请日：1992-08-27
申请人： HITACHI LTD , TOKAI RYOKAKU TETSUDO KK , HITACHI ENG CO LTD
发明人： SAEKI MITSURU , TAKIZAWA TERUHIRO , NISHIDA TATSUO , HONDA ATSUSHI , UCHIYAMA YORIHITO , OKABE HIROSHI
IPC分类号： B60L13/04 , B61B13/08 , B61D19/02
摘要： PURPOSE:To easily open and close the door of an opening and closing passage part furnished with a magnetic body to shield a leakage magnetic field of a coil provided on a floating type railway passenger-carrying car, etc. CONSTITUTION:On the door 12 of a passenger on-off device or a passenger- carrying car 1 provided as an opening and closing passage part on a magnetic body set on the periphery of a superconductive coil 2 to generate a magnetic field and forming a magnetic circuit, a coil 13 for erasing the magnetic field to erase the magnetic field in the magnetic body of the opening and closing part by way of excitating it by an opening and closing motion is provided.

9. 发明专利

JPH06204574A SUPERCONDUCTING EQUIPMENT 失效
公开(公告)号：JPH06204574A
公开(公告)日：1994-07-22
申请号：JP34792892
申请日：1992-12-28
申请人： HITACHI LTD , TOKAI RYOKAKU TETSUDO KK
发明人： SONOBE TADASHI , TAKIZAWA TERUHIRO , TERAI MOTOAKI , ASAHARA TETSUO , OISHI IKUO
IPC分类号： B60L13/04 , H01F6/00 , H01L39/04 , H01F7/22
摘要： PURPOSE:To prevent the increase in evaporation of a refrigerant and the appearance of quench of a permanent current switch by supporting a refrigerant box wherein the permanent current switch is stored by a vacuum chamber through a heat-insulating load supporting body for preventing vibration of the permanent current switch and the refrigerant box. CONSTITUTION:A refrigerant box 6 to store a permanent current switch 5 in a refrigerant is located apart from a refrigerant bath 2 to store a superconducting coil 1 in a refrigerant so that mechanical vibration of the refrigerant bath 2 may not work on the refrigerant box 6. The refrigerant bath 2 and the refrigerant box 6 are connected by bellows in vacuum and the refrigerant box 6 to store the permanent current switch 5 is supported by a vacuum chamber 4, using a load supporting body 11. By this structure, the refrigerant box 6 and permanent current switch 5 is independently supported by the heat-insulating load supporting body 11. Therefore, the refrigerant box 6 is not influenced by vibration of the refrigerant bath 2 and so the vibration of the refrigerant box 6 can be considerably reduced.

10. 发明专利

JPH10189333A GROUND COIL FOR MAGNETIC LEVITATION TYPE RAILWAY 失效
公开(公告)号：JPH10189333A
公开(公告)日：1998-07-21
申请号：JP34495496
申请日：1996-12-25
申请人： HITACHI LTD , TOKAI RYOKAKU TETSUDO KK
发明人： TSUJIMOTO SHIZUO , TAKIZAWA TERUHIRO , TSURUGA HITOSHI , TERAI MOTOAKI , NISHIKAWA YOICHI
IPC分类号： B61B13/08 , H01F7/20
摘要： PROBLEM TO BE SOLVED: To reduce eddy-current loss occurring in a conductor by using a conductor of plural circular cross-section insulating conductors, for larger space factor and simpler coil configuration. SOLUTION: Firstly, a conductor 17 of circular cross-section is covered with an insulating coat 18 to manufacture the conductor 17 where each conductor is insulated. Plural conductors are collected together at straight angle to form a conductor 10. Further, the entire conductor 10 is compressed to reduce a space 19 of the conductor 17. The insulating coating 18 comprises an enamel coat. Thus, the number of conductors is easily increased without reducing a space factor, while stage-transition part is simply configured, so that a ground- coil, with no circulating-current and less eddy-current loss, may be configured with ease.

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