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    • 11. 发明专利
    • Superconductive device
    • 超级设备
    • JPS60196908A
    • 1985-10-05
    • JP5228484
    • 1984-03-21
    • Hitachi LtdHitachi Service Eng Co Ltd
    • KUROISHI KAZUOYAGI YASUOMI
    • G01R33/381G01R33/44H01F6/00
    • H01F6/008
    • PURPOSE:To make the titled semiconductor device small in size as well as to contrive accomplishment of lightweight by a method wherein an auxiliary permanent current switch is formed into small capacitance. CONSTITUTION:A main permanent current switch 6 is series-connected to the series circuit of the first and the second superconductive coils 1 and 2 independently from an auxiliary permanent current switch 7, and a closed circuit whereon main current I1 will run in a permanent mode is formed. As a result, the auxiliary permanent current switch 7 is series-connected to the second superconductive coil 2 independently from the main permanent current switch, and a closed circuit whereon an auxiliary current I2 runs in a permanent current mode is formed. Accordingly, the main current I1 running on the auxiliary permanent current switch 7 as seen in the prior art can be prevented, and an auxiliary current I2 alone runs there. As a result, the auxiliary permanent current switch 7 of small capacitance wherein the auxiliary current I2 required for performance of a fine adjustment is sufficient enough for accomplishment of function required for this device.
    • 目的:通过将辅助永久电流开关形成为小电容的方法,使小型化的半导体装置成为轻量化的成果。 构成:主永久电流开关6独立于辅助永久电流开关7串联连接到第一和第二超导线圈1和2的串联电路,并且主电流I1将以永久模式运行的闭合电路 形成了。 结果,辅助永久电流开关7与主永久电流开关独立地串联连接到第二超导线圈2,并且形成了辅助电流I2以永久电流模式运行的闭合电路。 因此,可以防止在现有技术中运行在辅助永久电流开关7上的主电流I1,并且辅助电流I2单独在那里运行。 结果,小电容的辅助永久电流开关7,其中执行微调所需的辅助电流I2足以实现该装置所需的功能。
    • 12. 发明专利
    • SUPERCONDUCTING COOLING DEVICE
    • JPH06331253A
    • 1994-11-29
    • JP12376793
    • 1993-05-26
    • HITACHI LTD
    • MORI HIDEAKINEMOTO TAKEOKUROISHI KAZUOTAMAKI TAKASHI
    • F25D3/10H01L39/04
    • PURPOSE:To obtain a superconducting cooling device which is stably serviceable by installing a pressurizing means which holds an internal pressure of a very low temperature refrigerant storage tank at a slightly positive pressure with respect to an atmospheric pressure. CONSTITUTION:Liquid helium 2 is absorbed and expanded by an expansion valve 4 connected to an exhaust air device 6 by way of a heat exchanger 5, thereby generating cooled air. As the generated cooled air is heat-exchanged with the liquid helium 2 by way of the heat exchanger 6, the temperature of the liquid helium 2 drops from a saturated temperature equivalent to an inner pressure of a storage tank (for example, 4.2K in an atmospheric pressure) and turns in a subcool state or a fluid staring state. A gas cooling power lead 11, which supplies power to a superconducting magnet 3, has a cooling flow passage for the vapored gas of the liquid helium 2. The generated heat of the liquid helium 2 or the heat penetrated from a room temperature part is absorbed with the chill of the vaporized gas. A check valve 18 and a helium gas 19 keep the internal pressure of the liquid helium storage tank 1 slightly at a positive pressure with respect to the atmospheric pressure to such an extent tank it may prevent the atmospheric air from penetrating the liquid helium storage tank 1.
    • 13. 发明专利
    • HYBRID TYPE MAGNETICALLY PROPELLED SHIP
    • JPS63247196A
    • 1988-10-13
    • JP8094587
    • 1987-04-03
    • HITACHI LTDHITACHI SERVICE ENG
    • KUROISHI KAZUOIMURA HIROYA
    • B63H19/00
    • PURPOSE:To reduce a leakage magnetic field and improve propelling efficiency by providing both external magnetic field type electromagnetic propelling device and an internal magnetic field type electromagnetic propelling device on one ship and separately and independently operating each of them. CONSTITUTION:An external magnetic field type electromagnetic propelling device and an internal magnetic field type electromagnetic propelling device are installed in a hybrid type magnetically propelled ship. The external magnetic field type electromagnetic propelling device consists of a racetrack type superconductive magnet 12 having linear parts in the longitudinal direction of ship and electrodes 13, and the internal magnetic field type electromagnetic propelling device consists of a saddle type superconductive magnet 22 and electrodes 23. Thereby, during navigation on the open sea, the superconductive magnet 12 is excited to make a sea water electric current flow in the electrodes 13, enabling effective operation as an external magnetic field type magnetically propelled ship. Also, at the time of sailing in a harbor, the saddle type magnet 22 is excited to carry out navigation as an internal magnetic field type magnetically propelled ship, removing a leakage magnetic field.
    • 15. 发明专利
    • SUPERCONDUCTING DEVICE
    • JPS62200707A
    • 1987-09-04
    • JP4182886
    • 1986-02-28
    • HITACHI LTDHITACHI SERVICE ENG
    • KUROISHI KAZUOHASHIMOTO HIROSHI
    • H01L39/04H01F6/00
    • PURPOSE:To obtain the superconductive device having a load-supporting body of large rigidity limit as a whole by a method wherein the titled superconductive device is constructed in such a manner that the outer circumferential side of a multiple cylinder is connected to an ultralow temperature part, and the inner circumferential side is connected to a high temperature part. CONSTITUTION:In a heat-insulating load supporting member 10, a shaft 9 is connected to an outer case 3, and an outer cylinder 5 is connected to an inner case 1 through the intermediary of an electromagnetic force supporting member 8 respectively. On the side of an ultralow temperature (outer circumferential side), a carbon fiber reinforced plastic (CFRP) cylinder 6 is arranged, and a glass fiber reinforced plastic (GFRP) cylinder 8 is arranged on the side of normal temperature (inner circumferential side) respectively. In coupled parts A and B, as the temperature of the outer circumferential side is lower than that of the inner circumferential side, the outside of the coupled parts contracts more than the inside, the effect of expansion-fit performed when the supporting member is manufactured can be reinforced further, the CFRP coupled part having small interlayer exforiation-resisting force can also be reinforced sufficiently, and the desired load supporting member of high rigidity and high strength can be obtained as a whole.
    • 18. 发明专利
    • GROUND COIL FOR LEVITATION TYPE RAILROAD
    • JPS6472511A
    • 1989-03-17
    • JP22839587
    • 1987-09-14
    • HITACHI LTDHITACHI SERVICE ENG
    • KUROISHI KAZUOTAKIZAWA TERUHIRO
    • H01F6/00B60L13/04B61B13/08H01L39/00
    • PURPOSE:To obtain a propulsion coil characterized by a very small amount of Joule heat loss, by constituting the propulsion coil with a superconductor, which has superconducting phenomenon at normal temperature. CONSTITUTION:A propulsion coil part 1, which has a role for driving a car body on a magnetic levitation type railroad, is constituted in a coil form by using a superconducting wire material, which has a superconducting phenomenon at normal temperature. The propulsion coil 1, which is formed by using, e.g., a material having the superconducting characteristics at normal temperature, is divided into the longitudinal direction of the railroad and arranged along the entire length of the railroad. A progressive-wave magnetic field component, which is optimum for the speed and the like for rolling stocks, is formed in the longitudinal direction 2 of the railroad. Electric power, which gives the propulsion to the rolling stock, is supplied. Thus, heating loss due to the resistance in the propulsion coil for the magnetic levitation type railroad can be largely reduced. Thus, the propulsion coil system with less power consumption can be provided. The operational economy of the magnetic levitation type railroad can be improved.