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1. 发明专利

DE69023403D1 未知
公开(公告)号：DE69023403D1
公开(公告)日：1995-12-14
申请号：DE69023403
申请日：1990-07-20
申请人： HITACHI LTD , HITACHI CABLE
发明人： TADA NAOFUMI , IIDA FUMIO , TAKAHASHI RYUKICHI , MAKI NAOKI , SAKAI SHUJI , HOTTA YOSHIJI
IPC分类号： H01L39/24 , H01L39/14
摘要： A superconductor has an aluminum area (4) at the center in the cross section of said conductor therein and copper-covered multifilamentary NbTi composite conductor (2) at the peripheral parts of the cross section formed there around. The cross-sectional area ratio of (Cu+Al)/NbTi is in the range of 0.5 to 3.0 and the cross-sectional area ratio of Al/Cu is in the range of 0.05 to 0.5. This superconductor is provided by a method comprising the first step of providing a superconductor-copper composite hollow body in which copper films are applied around the superconductors, the second step of area reducing said composite hollow body, the third step of heat treating said body, the fourth step of inserting an aluminum body into the hollow of said hollow body, the fifth step of subjecting the body to working such as drawing, and the sixth step of subjecting the body to working such as twisting, forming or the like, an additional area reduction being carried out, if necessary, subsequent to the third step. A superconducting coil is made using the superconductor, and the coil is used for a magnetically levitated vehicle or a nuclear magnetic resonance apparatus.

2. 发明专利

DE69505462T2 未知
公开(公告)号：DE69505462T2
公开(公告)日：1999-06-24
申请号：DE69505462
申请日：1995-07-03
申请人： HITACHI LTD
发明人： TOMEOKU HIROSHI , YAMAGUCHI KIYOSHI , TAKAHASHI RYUKICHI , TOMINAKA TOSHIHARU , MAKI NAOKI
IPC分类号： F25D3/10 , H01F6/00 , H01F6/02 , H01L39/04 , H02H7/00

3. 发明专利

DE69023403T2 未知
公开(公告)号：DE69023403T2
公开(公告)日：1996-07-11
申请号：DE69023403
申请日：1990-07-20
申请人： HITACHI LTD , HITACHI CABLE
发明人： TADA NAOFUMI , IIDA FUMIO , TAKAHASHI RYUKICHI , MAKI NAOKI , SAKAI SHUJI , HOTTA YOSHIJI
IPC分类号： H01L39/24 , H01L39/14
摘要： A superconductor has an aluminum area (4) at the center in the cross section of said conductor therein and copper-covered multifilamentary NbTi composite conductor (2) at the peripheral parts of the cross section formed there around. The cross-sectional area ratio of (Cu+Al)/NbTi is in the range of 0.5 to 3.0 and the cross-sectional area ratio of Al/Cu is in the range of 0.05 to 0.5. This superconductor is provided by a method comprising the first step of providing a superconductor-copper composite hollow body in which copper films are applied around the superconductors, the second step of area reducing said composite hollow body, the third step of heat treating said body, the fourth step of inserting an aluminum body into the hollow of said hollow body, the fifth step of subjecting the body to working such as drawing, and the sixth step of subjecting the body to working such as twisting, forming or the like, an additional area reduction being carried out, if necessary, subsequent to the third step. A superconducting coil is made using the superconductor, and the coil is used for a magnetically levitated vehicle or a nuclear magnetic resonance apparatus.

4. 发明专利

DE69505462D1 未知
公开(公告)号：DE69505462D1
公开(公告)日：1998-11-26
申请号：DE69505462
申请日：1995-07-03
申请人： HITACHI LTD
发明人： TOMEOKU HIROSHI , YAMAGUCHI KIYOSHI , TAKAHASHI RYUKICHI , TOMINAKA TOSHIHARU , MAKI NAOKI
IPC分类号： F25D3/10 , H01F6/00 , H01F6/02 , H01L39/04 , H02H7/00

5. 发明专利

CA2037267C SUPERCONDUCTING MAGNETIC LEVITATED TRAIN, TRAIN SYSTEM METHOD OF CONTROLLING THE SAME, AND SUPERCONDUCTING COIL FOR MAGNETIC LEVITATED TRAIN 未知
公开(公告)号：CA2037267C
公开(公告)日：1995-10-03
申请号：CA2037267
申请日：1991-02-27
申请人： HITACHI LTD
发明人： TADA NAOFUMI , IIDA FUMIO , TAKAHASHI RYUKICHI
IPC分类号： H01F7/20 , B60L13/04 , B60L13/06 , B60L13/10 , B61B13/08 , H02K41/02
摘要： The present invention relates to a superconducting magnetically levitated train and train system. The train includes a plurality of cars connected to each other, a group of superconducting magnets attached to the cars and a coil provided on the ground. The superconducting magnetically levitated train is levitated by the magnetically induced repulsion between the superconducting magnets and the coil on the ground. The invention is characterized in that the superconducting magnet on a specified car has a predetermined stability margin which is larger than the stability margin of a superconducting magnet on the other cars. A method of controlling the superconducting magnetically levitated train is disclosed which includes detecting a driven state of a superconducting magnet on a specified car and varying and controlling the travelling conditions of the train so that the stability margin of the superconducting magnet on the specific car is changed in accordance with the command from a train control means. A superconducting coil for the superconducting magnetically levitated train is also disclosed. The coil is a coil of a composite superconducting wire composed of multifilamentary NbTi wire having a low copper ratio. The outer surface thereof is coated with thin high purity aluminum or the wire accommodates high purity aluminum at the central portion of the cross section thereof.

6. 发明专利

CA2037267A1 SUPERCONDUCTING MAGNETIC LEVITATED TRAIN, TRAIN SYSTEM METHOD OF CONTROLLING THE SAME, AND SUPERCONDUCTING COIL FOR MAGNETIC LEVITATED TRAIN 未知
公开(公告)号：CA2037267A1
公开(公告)日：1991-09-03
申请号：CA2037267
申请日：1991-02-27
申请人： HITACHI LTD
发明人： TADA NAOFUMI , IIDA FUMIO , TAKAHASHI RYUKICHI
IPC分类号： H01F7/20 , B60L13/04 , B60L13/06 , B60L13/10 , B61B13/08 , H02K41/02
摘要： A superconducting magnetic levitated train and train system which includes a plurality of cars connected to each other, a group of superconducting magnets attached to the cars and a coil provided on the ground so that the superconducting magnetic levitated train is levitated by the magnetically induced repulsion between the superconducting magnets and the coil on the ground. The invention is characterized in that the superconducting magnet on a specified car has a predetermined stability margin which is larger than the stability margin of a superconducting magnet on the other cars. A method of controlling the superconducting magnetic levitated train which includes detecting a driven state of a superconducting magnet on a specified car and varying and controlling the travelling conditions for the train so that the stability margin of the superconducting magnet on the specific car is changed in accordance with the command from a train control. A superconducting coil for the superconducting magnetic levitated train includes a coil of a composite superconducting wire composed of multifilmentary NbTi wire having a low copper ratio. The outer surface thereof is coated with thin high-purity aluminum or the wire accommodates high-purity aluminum at the central portion of the cross section thereof.

7. 发明专利

JPH08138821A JOINING STRUCTURE AND END PART STRUCTURE OF SUPERCONDUCTIVE CONDUCTOR 失效
公开(公告)号：JPH08138821A
公开(公告)日：1996-05-31
申请号：JP26933794
申请日：1994-11-02
申请人： HITACHI LTD
发明人： KAMOSHITA RIKUO , SATOU CHIE , GOTO SUMITAKA , TAKAHASHI RYUKICHI , WADAYAMA YOSHIHIDE , KORIKI KATSUO , ASANO KATSUHIKO , SHIGENAKA AKIRA
IPC分类号： H01R4/68 , H01B12/10 , H01R43/00
摘要： PURPOSE: To obtain a compact superconductive conductor joint part with its low connection resistance, small characteristic distortion, and high reliability. CONSTITUTION: In butt joint of a superconductive conductor, a superconductive element wire 4' constituting each conductor is joined to match by one-to-one in the butt surface. Thereby, a superconductive joint part with its low connection resistance and high reliability can be obtained. Therefore, a superconductive joint body with its low connection resistance and possible high current power supply can be obtained, thereby, fabrication of a coil for high magnetic field generation or a coil in eternal current mode specifications is possible, and superconductive application field can be significantly expanded.

8. 发明专利

JPH07142234A APPARATUS FOR COOLING CRYOGENIC-TEMPERATURE SUPERCONDUCTING COIL 失效
公开(公告)号：JPH07142234A
公开(公告)日：1995-06-02
申请号：JP29022893
申请日：1993-11-19
申请人： HITACHI LTD
发明人： HOTTA YOSHITOSHI , TAKAHASHI RYUKICHI , MORITA YUTAKA
IPC分类号： H01F6/00
摘要： PURPOSE:To shorten the cooling time of a superconducting coil from room temperature by installing a pipe, for preliminary cooling, which comes into contact with the superconducting coil and which can be cooled from the outside. CONSTITUTION:Helium gas which is supplied from a refrigerant generation device 17 enters a terminal box 13 through a pipe 19a, it then enters a superconductive coil, it is then returned to the refrigerant generation device 17 through a return pipe 19b, and this operation is repeated. A valve 26 to a refrigerant storage tank is closed until the temperature of the superconducting coil reaches about 20 K, a valve 25 for preliminary cooling is opened, and a coil conductor is cooled from the outside. When the temperature becomes 20 K or lower, the valve 25 for magnet preliminary cooling is closed, the valve 26 to the refrigerant storage tank is opened, liquid helium is stored in a liquid-helium storage tank 20, and a temperature rise due to creeping heat from a current lead and due to the leak of heat to the outside of supercritical- pressure helium is suppressed. When the temperature of the coil becomes a superconductive state, a current is applied from an exciting-current source 15, and the coil is excited. The temperature rise of the current lead during its excitation is suppressed by the liquid helium inside the liquid helium tank 20 and by the helium gas.

9. 发明专利

JPH0794317A SUPERCONDUCTING COIL DEVICE 失效
公开(公告)号：JPH0794317A
公开(公告)日：1995-04-07
申请号：JP1333394
申请日：1994-02-07
申请人： HITACHI LTD , CENTRAL RES INST ELECT
发明人： TOMEOKU HIROSHI , TANIGUCHI TSUKASA , SUZUKI YASUO , MAKI NAOKI , TAKAHASHI RYUKICHI , AKITA MITSUGI , KASAHARA TOMOFUMI , TORII SHINJI
IPC分类号： H01F6/06 , H01F6/00 , H01F6/04
摘要： PURPOSE:To obtain a superconducting coil device having a non-moving superconducting wire and high dielectric strength by a method wherein, after thermosetting resin has been coated in the helical groove formed on the outer surface of the cylindrical spool of the innermost layer, a superconducting wire is wound with the prescribed tension. CONSTITUTION:A helical groove 3', to be used to wound a super-conducting wire, is provided in the required length on the surface of a cylinder 6 formed by glass fiber reinforced plastic(FRP) and the like. A guiding groove 5, for winding of the initial turn of the superconducting wire, is provided on the innermost layer. The superconducting wire 4 is wound in this groove for a number of turns require. Then, the second layer of thin cylinder spool 7 is covered. The second layer of cylinder is formed by FRP and the like, and a helical groove 3 is provided on the outside surface. After an epoxy resin has been coated on the helical groove of the spool, the superconducting wire is wound giving the prescribed tensile force. As a result, the superconducting wire is hardly moved, and a superconducting coil device, having high dielectric strength, can be obtained.

10. 发明专利

JPH03119613A MANUFACTURE OF AL STABILIZED SUPERCONDUCTIVE WIRE 失效
公开(公告)号：JPH03119613A
公开(公告)日：1991-05-22
申请号：JP25543689
申请日：1989-09-30
申请人： HITACHI LTD , HITACHI CABLE
发明人： TAKAHASHI RYUKICHI , TADA NAOFUMI , HOTTA YOSHITOSHI , SAKAI SHUJI
IPC分类号： C22F1/00 , H01B12/10 , H01B13/00
摘要： PURPOSE:To prevent a heat diffusion reaction from generating between Cu and Al without using a special reaction-proof material and to improve the facility in a machining process by obtaining a hollow body into which superconductive materials are compoundly integrated, by inserting Al into the hollow part after an age heat treatment, and by effecting an area reduction process, twist, molding process, etc. CONSTITUTION:In using both Cu and Al as compound stabilized base materials and obtaining an Al stabilized superconductive wire including Al in the cross section center, a hollow body into which superconductive materials of Cu, NbTi, etc., are compoundly integrated is given an age heat treatment. Then after Al insertion of into the hollow part the hollow body is given a area reduction process, twist, molding process, etc. In the process until the Al insertion after the age heat treatment, the area reduction process ratio is 50% to 90%. The area reduction ratio after the Al insertion should be 50% or more.

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