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51. 发明专利

JPH08111313A MAGNETIC LEVITATION MECHANISM 失效
公开(公告)号：JPH08111313A
公开(公告)日：1996-04-30
申请号：JP26841694
申请日：1994-10-06
申请人： RAILWAY TECHNICAL RES INST
发明人： NAKAJIMA HIROSHI , KAMIJIYOU HIROTAKA , IIKURA SHIGEHIRO , YOSHIOKA HIROSHI , WATANABE TAKESHI , HERAI TOSHIKI , NAGASHIMA MASARU
IPC分类号： H01F7/20 , B60L13/04
摘要： PURPOSE: To obtain a magnetic levitation mechanism in which a vehicle is levitated perfectly without touching a ground facility at all while ensuring all functions of propulsion and guide by improving the arrangement of electri cally conductive plates opposing a magnet thereby generating a levitation force effectively. CONSTITUTION: The magnetic levitation mechanism comprises a pair of rotors 3-1, 3-2 arranged in a cross-section in the advancing direction of a mobile body, and electrically conductive plates 5-1, 5-2, 5-3 arranged continuously in the moving direction of the mobile body while being split such that the center of rotation of the rotors 3-1, 3-2 are located asymmetrically in a cross-section. The mobile is thrust by the difference of magnetic drag in the longitudinal direction between the rotors 3-1, 3-2 and when the mobile body is deviated perpendicularly to the advancing direction, a force for returning the mobile back to the center is generated.

52. 发明专利

JPH0861798A COOLER 失效
公开(公告)号：JPH0861798A
公开(公告)日：1996-03-08
申请号：JP19940394
申请日：1994-08-24
申请人： AISIN SEIKI , RAILWAY TECHNICAL RES INST
发明人： MITA HIDEO , KANDA KAZUNOBU , MISAWA HIDEO , HERAI TOSHIKI , NAGASHIMA MASARU
IPC分类号： F25B9/00 , F25B9/10 , F25B9/14
摘要： PURPOSE: To remarkably improve cooling capacity of a material to be cooled in a cooler having in combination a cold thermal storage type refrigerator and a cooling circuit. CONSTITUTION: A branch circuit 31 having a throttle 30 for controlling the flow rate of a refrigerant flowing to the high pressure side channel 29a of a counterflow type heat exchanger 29 and a separate heat exchanger 21 in which the refrigerant fed through the throttle 30 is in thermal contact with the part varying from the high temperature to the low temperature of a cold thermal storage unit 3 is provided at a branch point P1 of the discharge port of pressure feeding means 20 and a confluent point P2 provided at the high pressure side channels 28a, 29a of the counter flow type heat exchanger 28, 29. Operating medium to the channel 29a of the exchanger 29 is partly branched to be reduced from the flow rate of a low pressure side channel 29b, the temperature of high pressure side second refrigerant is lowered by the exchanger 29, efficiently cooled by the exchanger 21, and the cooling capacity of the material to be cooled is remarkably enhanced.

53. 发明专利

JP2002217022A SUPERCONDUCTING TRANSFORMER 失效
公开(公告)号：JP2002217022A
公开(公告)日：2002-08-02
申请号：JP2001012713
申请日：2001-01-22
申请人： RAILWAY TECHNICAL RES INST
发明人： HATA HIROSHI , SUZUKI EIJI , HERAI TOSHIKI , NAGASHIMA MASARU , FUJIMOTO HIROYUKI , KAMIJIYOU HIROTAKA
IPC分类号： F25D3/10 , H01F6/04
摘要： PROBLEM TO BE SOLVED: To provide an on-vehicle superconducting transformer which is capable of reducing the replenishment of refrigerant in frequency so as to make its maintenance operation simpler. SOLUTION: In this superconducting transformer 1, provided that the boiling point (-195.8 deg.C), solidifying point (-209.9 deg.C), normal operating temperature, and specific heat of liquid nitrogen are represented by Tb, Ts, Tr, and ρ respectively, furthermore the amount of liquid nitrogen kept in a cryostat 8 is represented by W, the amount of steady heat penetration into the cryostat 8 is represented by Q, and a time when a vehicle is shut off from a power supply is represented by (t), the superconductive transformer 1 is so set as to satisfy following formulas, Tb>Tr>Ts, W>(Q×t)÷[(Tb-Tr)×ρ]. By this setup, even if a power supply-free time (t) becomes comparatively long, a temperature rise in liquid nitrogen can be reduced so as to keep the temperature of liquid hydrogen lower than the its boiling point Tb. Therefore, this superconducting transformer 1 is not required to be frequently replenished with liquid nitrogen, so that its maintenance operation becomes simpler.

54. 发明专利

JPH1174114A SUPERCONDUCTING MAGNET DEVICE 失效
公开(公告)号：JPH1174114A
公开(公告)日：1999-03-16
申请号：JP23218297
申请日：1997-08-28
申请人： KOKUSAI CHODENDO SANGYO GIJUTS , TOKYO GAS CO LTD , RAILWAY TECHNICAL RES INST
发明人： MOCHIDA TADASHI , NAGASHIMA MASARU , MURAKAMI MASAHITO
IPC分类号： F16C32/04 , H01F6/00 , H01F7/02 , H01L39/04
摘要： PROBLEM TO BE SOLVED: To reduce the vertical displacement of superconductors with respect to time and, at the same time, to easily position the superconductors in the horizontal direction by two- or three-dimensionally arranging the superconductors, and providing a means for respectively controlling the amounts of magnetization of the superconductors. SOLUTION: A temperature control plate 1 sets the temperature of a superconductor 2 to an arbitrary prescribed value by cooling or heating the superconductor 2. The plate 1 and the superconductor 2 are surrounded by a heat-insulating material so as to prevent the flowing-in of heat from the outside. A heat exchange port 4 is provided so as to facilitate the flowing-in or flowing-out of heat to and from the plate 1. Then, the temperature of the superconductor 2 is changed, when the superconductor 2 is magnetized or the amount of magnetization of the superconductor 2 is controlled by raising the temperature of the superconductor 2 after magnetizing. By controlling the amount of magnetization in this way, the vertical displacement of the superconductor 2 with time is reduced and the superconductor 2 can be positioned easily in the horizontal direction. In addition, stable levitation can be realized by increasing the vertical and horizontal supporting force for the superconductor.

55. 发明专利

JPH09255333A OXIDE SUPERCONDUCTING COMBINED BODY AND ITS PRODUCTION 失效
公开(公告)号：JPH09255333A
公开(公告)日：1997-09-30
申请号：JP6559696
申请日：1996-03-22
申请人： KOKUSAI CHODENDO SANGYO GIJUTS , RAILWAY TECHNICAL RES INST
发明人： NAGASHIMA MASARU , SAKAI NAOMICHI , RIYUU SOUNIN , FUJIMOTO HIROYUKI , MURAKAMI MASAHITO
IPC分类号： C01G1/00 , C01G3/00 , H01B12/00 , H01B13/00 , H01L39/00 , H01L39/14
摘要： PROBLEM TO BE SOLVED: To provide a technique capable of generating a strong magnetic field. SOLUTION: This combined body consists of two or more kinds of RE-Ba-Cu- O (RE is a rare earth element) superconducting bulky bodies capturing a magnetic field in the pinning centers in the bulky bodies. The peripheral part of this combined body is formed with a superconducting bulky body 1 having high critical current density in a low magnetic field as one of the RE-Ba-Cu-O superconducting bodies and the central part is formed with a superconducting bulky body 2 having high critical current density in a high magnetic field as the other.

56. 发明专利

JPH09243191A HERIUM LIQUEFYING DEVICE 失效
公开(公告)号：JPH09243191A
公开(公告)日：1997-09-16
申请号：JP4471996
申请日：1996-03-01
申请人： RAILWAY TECHNICAL RES INST
发明人： NAKAJIMA HIROSHI , HERAI TOSHIKI , NAGASHIMA MASARU , TOMITA MASARU
IPC分类号： F25B9/02
摘要： PROBLEM TO BE SOLVED: To attain a maximum freezing capability even under an over-loaded state such as a de-energization state by a method wherein there is provided a valve for use in keeping a pressure at an inlet side of a herium compressor. SOLUTION: This herium liquefying device 7 supplies liquid herium to a herium tank 18 for cooling a super-conductive magnet 20. There are provided a low pressure circuit 1, a herium compressor 3, a high pressure circuit 2 and a cryogenic expanding device 6. The high pressure circuit 2 and the cryogenic expansion device 6 are connected by a high pressure pipe passage L2. The cryogenic expansion device 6 and the low pressure circuit 1 are connected by a low pressure pipe passage L1. The low pressure circuit 1 is connected to a suction port 21 of a herium compressor at an inlet side of the herium compressor 3, and the high pressure circuit 2 is connected to an output side of the herium compressor 3. A second low pressure adjusting valve 13 is arranged between the low pressure circuit 1 and the suction port 21. With such an arrangement as above, either an operating efficiency or a freezing capability of the herium liquefying device can be equal to that of the normal operating state in its maximum values.

57. 发明专利

JPH06283769A SUPERCONDUCTING MAGNET REFRIGERATING SYSTEM 失效
公开(公告)号：JPH06283769A
公开(公告)日：1994-10-07
申请号：JP9218293
申请日：1993-03-26
申请人： RAILWAY TECHNICAL RES INST
发明人： NAKAJIMA HIROSHI , NAGASHIMA MASARU
IPC分类号： F25B9/02 , F25B9/00 , F25D3/10 , H01F6/04 , H01L39/04 , H01F7/22
摘要： PURPOSE:To facilitate reliquefaction subsequent to thermal overloading and miniatuarize the buffer tank in a superconducting magnet refrigerating system by temporarily storing vaporized helium in the low temperature buffer tank when a thermal load exceeds the freezer's capability. CONSTITUTION:Usually a flow control valve 13 is fully open, and the internal pressure of a low temperature buffer tank 12 is equal to the pressure of a liquid helium standing section 2. When the thermal load is increased due to excitation/demagnetization of a superconducting magnet, the valve 13 is closed to increase the internal pressure of the buffer tank, and a region for temporarily storing helium gas is thereby ensured. After the ordinary thermal load has been restored, the flow control valve 13 is opened to reliquefy the helium.

58. 发明专利

JP2003219581A SUPERCONDUCTING FLYWHEEL POWER STORAGE APPARATUS 审中-公开
公开(公告)号：JP2003219581A
公开(公告)日：2003-07-31
申请号：JP2002015619
申请日：2002-01-24
申请人： RAILWAY TECHNICAL RES INST
发明人： NAGASHIMA MASARU
IPC分类号： H02J15/00 , H02K7/02 , H02N15/04
摘要： PROBLEM TO BE SOLVED: To provide a superconducting flywheel power storage which is possible of further increase in the stored power and moreover is low to the utmost in energy loss. SOLUTION: The superconducting flywheel power storage comprises an exhaust device (9), which has a cryogenic container 1 having accommodated a superconducting coil 3 arranged in fixed state, a superconducting bulk body 4 arranged in levitation state opposite to it, and a flywheel 5 rotating in a body with the superconducting bulk body in question, and evacuates the interior of the cryogenic vessel, heat conductive coolers (10 and 11) which cool the superconducting coil to its critical temperature or lower, and a clutch device (13') which performs connecting and break, between a rotary shaft 3 fixed to the flywheel and a generator-motor 12. As the clutch device, a noncontact type electromagnetic clutch is suitable. COPYRIGHT: (C)2003,JPO

59. 发明专利

JP2003151822A COOLING DEVICE FOR SUPERCONDUCTIVE COIL 审中-公开
公开(公告)号：JP2003151822A
公开(公告)日：2003-05-23
申请号：JP2001352637
申请日：2001-11-19
申请人： RAILWAY TECHNICAL RES INST
发明人： NAGASHIMA MASARU
IPC分类号： H01F6/04
摘要： PROBLEM TO BE SOLVED: To provide a superconductive coil cooling device which is capable of cooling a superconductive coil uniformly in a wide range of temperature, compact in structure, and easily handled. SOLUTION: As shown in Figure 1, a superconductive coil cooling device is composed of a coolant gas compressor (e.g. helium compressor) and a plurality of pulse tube refrigerators 2 having high-temperature ends connected to the coolant gas compressor through the intermediary of gas distribution valve motors 1 and low-temperature ends arranged at positions inside a coil holding vessel housing a superconductive coil. It is preferable that the low-temperature ends of the pulse tube refrigerators are inserted into load support materials 4 which act as heat penetrating sources and are located in the coil holding vessel.

60. 发明专利

JP2003151820A SUPERCONDUCTING MAGNET DEVICE 审中-公开
公开(公告)号：JP2003151820A
公开(公告)日：2003-05-23
申请号：JP2001352638
申请日：2001-11-19
申请人： RAILWAY TECHNICAL RES INST
发明人： NAGASHIMA MASARU
IPC分类号： H01F6/00
摘要： PROBLEM TO BE SOLVED: To provide a superconducting magnet device that can be operated and managed easily and can further be reduced in size. SOLUTION: This superconducting magnet device is constituted by housing a plurality of coils 2 made of superconducting materials in one cryostat 1, as shown in Fig. 1. This magnet device has a constitution in which the coils 2 are connected in series and 'permanent current switches or flax pumps' 3 are set up at both ends of the serially connected coils 2. The constitution becomes more effective when the superconducting coils 2 are made of high- temperature superconducting materials.

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