专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH10106829A SUPERCONDUCTING DEVICE 失效
公开(公告)号：JPH10106829A
公开(公告)日：1998-04-24
申请号：JP28029096
申请日：1996-10-01
申请人： YAMAGUCHI SAKUTARO , MITSUBISHI ELECTRIC CORP
发明人： YAMAGUCHI SAKUTARO , MORITA MASAO , SENOO KAZUTAKE
IPC分类号： H01L39/04 , H01B12/02 , H01F6/06 , H01L39/06
摘要： PROBLEM TO BE SOLVED: To provide a superconducting device capable of preventing heat unbalance in a current lead and drift current caused by dispersion of resistance of normal conducting wire and so on. SOLUTION: A current lead has normal conducting wires (61, 62, 65, and 66) electrically insulated from each other. Normal conducting wires forming the current lead are connected to a single wire (2a and 2b) forming superconductor or a bundle of single wires respectively, and normal conductors are electrically connected at the normal temperature portion of the current lead.

2. 发明专利

JPH10106648A SUPERCONDUCTING DEVICE 失效
公开(公告)号：JPH10106648A
公开(公告)日：1998-04-24
申请号：JP28028996
申请日：1996-10-01
申请人： YAMAGUCHI SAKUTARO , MITSUBISHI ELECTRIC CORP
发明人： YAMAGUCHI SAKUTARO , KIN TAIHIYUN , MORITA MASAO
IPC分类号： H01L39/06 , H01R4/68
摘要： PROBLEM TO BE SOLVED: To restrain an eddy current that occurs at the connection between superconductors by electrically connecting the superconductors together by means of a connecting member comprising a conducting member for connection and an insulating member which are integrated together. SOLUTION: A connecting member 6 comprises a plurality of pipe conductors 8, an insulating member 10, and a sheath 12 covering the outer peripheries of the conductors 8 and the member 10, and superconductors 2a, 2b are connected together by the integrated member 6. In this case, after the superconducting strands 1a, 1b of the conductors 2a, 2b are inserted into the conductors 8 of the member 6, they are joined to the conductors 8 by soldering or other means, whereby an electric connection of the strands 1a, 1b between the conductors 2a, 2b can be made. Thus since the connection can readily be made, the number of processes for assembling a superconducting device is reduced and operating time is reduced, resulting in reduced manufacturing cost. Even if a current passed or a magnetic field generated in the superconducting device fluctuates at high speed, an induced eddy current can be reduced.

3. 发明专利

JPH10106825A STRUCTURE FOR PROTECTING DRIFT CURRENT BETWEEN SINGLE WIRES IN SUPERCONDUCTING MAGNET 失效
公开(公告)号：JPH10106825A
公开(公告)日：1998-04-24
申请号：JP28029196
申请日：1996-10-01
申请人： YAMAGUCHI SAKUTARO , MITSUBISHI ELECTRIC CORP
发明人： YAMAGUCHI SAKUTARO , SASAKI TAKASHI , NAKAJIMA KUNIHIKO , HASEGAWA MITSURU , TSUDA YOSHIYUKI
IPC分类号： H01L39/06 , H01B12/02 , H01F6/00 , H01F6/06
摘要： PROBLEM TO BE SOLVED: To provide a structure capable of protecting superconductive drift current to such an extent that power loss in the resistor added for protection of drift current is of a negligible low level. SOLUTION: A resistor 24 is fixed to an unstranded wire 23 by soldering and so on and a resistor is added to an individual wire. A cold body 25 prepared on the opposite side of the junction of the resistor 24 makes it possible to reduce resistance variation of the resistor. The coil is surrounded by a heat shield to prevent the coil from receiving radiation emitted from the room temperature body 25 and heat generated from the wire is dissipated outside by means of cooling gas 28.

4. 发明专利

JPH10106364A SUPERCONDUCTIVE APPARATUS AND ITS MANUFACTURE 失效
公开(公告)号：JPH10106364A
公开(公告)日：1998-04-24
申请号：JP28028896
申请日：1996-10-01
申请人： YAMAGUCHI SAKUTARO , MITSUBISHI ELECTRIC CORP
发明人： YAMAGUCHI SAKUTARO , SENOO KAZUTAKE , MORITA MASAO
IPC分类号： H01L39/06 , H01B12/08 , H01R4/68
摘要： PROBLEM TO BE SOLVED: To make electric current distribution in paralleled superconductive wires uniform by selecting one or a plurality of element wires from respective element wire bundles of multiple stranded superconductive conductor, connecting the selected element wires with one element wire bundle of another multiple stranded superconductive conductor, and displacing the selected element wires. SOLUTION: In this superconductive apparatus, one superconductive element wire 9 is selected respectively from superconductive strand bundles 10a-1, 10a-2, 10a-3 of 3×3 double-stranded superconductor 15a and replaced by joining each of the selected wires with one of superconductive strand bundle 10b-1 of another double-stranded superconductor 15b. Consequently, since the magnetic bonding between superconductive strands 9, which are magnetically firmly bonded in the same superconductive strand bundle, is lowered, unbalance of electric current distribution due to stranding disorder is hardly caused. Moreover, as compared with a method using a conventional electric resistance, no heat is generated based on Joule's law, so that consumption of liquid helium can be lowered.

5. 发明专利

JP2000088967A RADIATION DETECTOR 失效
公开(公告)号：JP2000088967A
公开(公告)日：2000-03-31
申请号：JP25497798
申请日：1998-09-09
申请人： YAMAGUCHI SAKUTARO
发明人： YAMAGUCHI SAKUTARO , YAMANISHI HIROKI
IPC分类号： G01T1/16 , G01T1/20 , G01T1/29
摘要： PROBLEM TO BE SOLVED: To acquire and form a gamma-ray image without using a collimator made of metal with heavy weight by preventing the absorption dose of incidence gamma rays from being proportional to capacity, and by changing the absorption dose according to the incidence direction of gamma rays. SOLUTION: In a device, the shape effect of a detector is utilized, the detection efficiency of gamma rays has incident angle θdependency, and a direction where the gamma rays arrive can be obtained. The absorption dose of incidence gamma rays is not proportional to capacity, and the absorption dose is changed according to the incidence direction of the gamma rays. The detector is rotated around a specific axis, and the gamma rays are detected in three-dimensional space. Also, a plurality of the detectors are arranged in an array in parallel by changing an arrangement angle, and are rotated independently or together. The detectors have various sizes, process data being obtained by the detectors only for the gamma-ray intensity in a preset energy range, and detect the direction of a gamma-ray source.

6. 发明专利

JPH04322023A DC CUTTING DEVICE 失效
公开(公告)号：JPH04322023A
公开(公告)日：1992-11-12
申请号：JP9189491
申请日：1991-04-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMAGUCHI SAKUTARO
IPC分类号： H01H33/59 , H01H85/46 , H02H7/00 , H02J15/00
摘要： PURPOSE:To obtain a DC cutting device able to easily perform sure current cutting. CONSTITUTION:Power supply E is connected between both ends of a superconductive coil L through a power supply switch S while connecting a fuse circuit FC, in which a closing switch S4 and a fuse F are connected to each other in series, in parallel with the power supply switch S. When quenching is generated in a superconductive coil L during operation, the power supply switch S is opened, however, sometimes without completely cutting off a current. Then, the closing switch S4 is closed so as to transfer the current to the fuse circuit FC for cutting off current by the fuse F.

7. 发明专利

JPH04294011A DC BREAKER CIRCUIT 失效
公开(公告)号：JPH04294011A
公开(公告)日：1992-10-19
申请号：JP5982691
申请日：1991-03-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： MARUYAMA TOSHIMASA , SASAO HIROYUKI , YAMAGUCHI SAKUTARO , MATSUMURA YASUSHI
IPC分类号： H01H9/30
摘要： PURPOSE:To suppress an influence of the jitters of a circuit breaker small by a method wherein, when a switch is closed by a command of a switch closing control circuit, a current flowing from capacitor power supply is made zero, breaking is performed within a zero period of this current and consequently the breaking is correctly performed in a short time without generating arc plasma between the electrodes of the circuit breaker. CONSTITUTION:DC power supply 1 is connected to a load coil 2A through a series circuit composed of a diode 16 and a circuit breaker 3A. A series circuit consisting of a capacitor power supply 6 and a switch 4A as well as a resistance 17 for commutation are in parallel connected respectively in aforesaid series circuit. Further a cross-bar switch 18 is connected in parallel with the DC power supply 1. Further, the circuit breaker 3A has not less than two phases, and a contact signal of a B phase (utilized as a position sensor) not connected to a main circuit is sent to a switch closing control circuit 20 through a signal detector 19.

8. 发明专利

JPH04206219A D.C. CIRCUIT-BREAKER 失效
公开(公告)号：JPH04206219A
公开(公告)日：1992-07-28
申请号：JP33612990
申请日：1990-11-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMAGUCHI SAKUTARO , SASAO HIROYUKI , HASEGAWA YUTAKA , IKEDA KAZUO
IPC分类号： H01H33/59
摘要： PURPOSE:To carry out D.C. circuit-breaking without almost generating arc by augmenting reactance of a supersaturation reactor when it is in the vicinity of a point of zero current or when it is a point of current reverse polarity over zero, and by opening a mechanical switcher during the rectification. CONSTITUTION:A current converter coil OH, a circuit-breaking resistance R, and a D.C. power source P.S. are provided. A communication circuit is composed of a condenser Cc, an inductor L1 for waveform adjustment, and an input switch SW1. Normally, or in a case of accident current a magnetic body is saturated, and when the current that passes through a mechanical switch Sp is almost under zero by the communication circuit, and the saturation of the magnetic body is cancelled, and the reactance of a supersaturation reactor Ls is promptly increased, while the supersaturation reactor Ls is connected in series to the mechanical switch Sp. The reverse current is hindered by the supersaturation reactor Ls, which has rectification function, and circuit-breaking while generating little arc, is thus possible by the mechanical switch Sp opened during the rectification.

9. 发明专利

JPH04199805A RECTIFIER TYPE SATURABLE REACTOR 失效
公开(公告)号：JPH04199805A
公开(公告)日：1992-07-21
申请号：JP33612890
申请日：1990-11-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMAGUCHI SAKUTARO , SASAO HIROYUKI , HASEGAWA YUTAKA , IKEDA KAZUO
IPC分类号： H01F29/14 , H01F17/06 , H01F38/02
摘要： PURPOSE:To obtain a low-cost rectifier element which is strong against surge voltages and large in current capacity by using the hysteresis characteristic of a core of the title reactor for the rectifying action of the rectifier element. CONSTITUTION:When a thyristor Th1 is closed, an electric current starts to flow in this rectifier type saturable reactor SR and the core of the reactor SR is saturated. When the electric current flowing in the SR is reduced by operating a commutation circuit (closing a thyristor Th2), the reactor SR indicates a trajectory due to its hysteresis characteristic and, since the effective inductance of the reactor SR is low, the electric current from the commutation circuit flows in the reactor SR. When the 'H' becomes negative thereafter, the hysteresis curve abruptly changes. The electric current flowing in the reactor SR gradually changes to a constant level. The electric current flowing in the reactor SR changes when the polarity of the commutation circuit is changed due to a discharge and stays at a constant positive level until the core is again saturated. When the core is again saturated, the electric current returns to the original state at the time constant determined by an external circuit. Therefore, the reactor SR works as a rectifier element as a whole and its surge resistant property can be improved at a low cost. In addition, the current capacity of the reactor SR becomes larger.

10. 发明专利

JPH0438119A PROTECTIVE METHOD AND DEVICE FOR SUPERCONDUCTING COIL 失效
公开(公告)号：JPH0438119A
公开(公告)日：1992-02-07
申请号：JP14002290
申请日：1990-05-31
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMAGUCHI SAKUTARO , TSUKAMOTO TADANORI
IPC分类号： H01L39/14 , H02H7/00 , H02J15/00
摘要： PURPOSE:To reduce the rated capacity of an interrupting means by connecting a DC interrupting means and a protective resistor in parallel with a superconducting coil connected with a power supply, and closing the interrupting means at the time of quenching of the superconducting coil thereby inverting, or bringing to zero, the supply voltage. CONSTITUTION:A current is normally fed, in the direction of an arrow, from a double polarity power supply PS to a superconducting coil L. At this time, a switch SW1 is opened while a circuit breaker CB is closed and a capacitor bank C1 is previously charged with the polarity shown on the drawing. Upon quenching of the coil L, the SW1 is closed to invert the voltage of the PS. Consequently, current in the coil L decreases through a protective resistor RD to cause abrupt decrease of PS current and thereby current flowing from a diode DL to the SW1 increases abruptly to bring the PS current to zero thus electrically isolating the PS from the coil L. Subsequently, an SW2 is closed to feed current from the capacitor bank C1 to inductors L1, L2 thus abruptly decreasing the current flowing through the circuit breaker CB, and then the CB is opened. By such arrangement, rated capacities of CB and SW can be reduced.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式