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1. 发明专利

JP2011215067A Insulation diagnosis method, insulation diagnosis system, and rotating electric machine 审中-公开
标题翻译：绝缘诊断方法，绝缘诊断系统和旋转电机
公开(公告)号：JP2011215067A
公开(公告)日：2011-10-27
申请号：JP2010085119
申请日：2010-04-01
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OMATSU CHIE , OHATA KOJI , HAGIWARA SHUYA
IPC分类号： G01R31/12 , G01R31/34
CPC分类号： G01R31/1227 , G01R31/34
摘要： PROBLEM TO BE SOLVED: To identify the type of an insulation defect in a diagnosis target device.SOLUTION: A signal generated from a diagnosis target device is measured, and a frequency or a frequency band manifesting a maximum amplitude strength is detected from the measured signal (steps 0702, 0704, 0706). The insulation defect type in the diagnosis target device is identified based upon the detected frequency or frequency band manifesting the maximum amplitude strength.
摘要翻译：要解决的问题：确定诊断目标装置中的绝缘缺陷的类型。解决方案：测量从诊断目标装置产生的信号，并且从测量信号中检测出表现出最大幅度强度的频率或频带（步骤0702,0704,0706）。基于检测到的表现最大振幅强度的频率或频带来识别诊断对象装置中的绝缘缺陷类型。

2. 发明专利

JP2008128943A Nuclear magnetic resonance probe 有权
标题翻译：核磁共振探测器
公开(公告)号：JP2008128943A
公开(公告)日：2008-06-05
申请号：JP2006316904
申请日：2006-11-24
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUKUDA YUZO , HAGIWARA SHUYA , KAWASAKI KENJI
IPC分类号： G01R33/36 , G01R33/32 , G01R33/34
CPC分类号： G01R33/3621 , G01R33/34061 , G01R33/34092 , G01R33/3664
摘要： PROBLEM TO BE SOLVED: To provide a nuclear magnetic resonance probe reducing loss by high-frequency cable from a probe coil to a preamplifier and enhancing sensitivity of an NMR signal.
SOLUTION: A changing-over switch 1 for the NMR probe is divided into a switching section 20 including a switching device 14 and a filtering section 19 filtering the switch control signal and the RF transmitted signal. The switching section 20 is arranged within a probe body 21 inserted into a magnet of the probe. The filtering section 19 is arranged near a measuring device 4 exterior of the probe. The switching section 20 reduces the cross sectional structure of thickness and breadth corresponding to elongated shape of a probe body 21. Thus, the length from a probe coil to a preamplifier can be shortened substantially to reduce the loss.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供核磁共振探针，通过高频电缆从探针线圈到前置放大器减少损耗，并提高NMR信号的灵敏度。解决方案：用于NMR探针的转换开关1被分成包括开关装置14和滤波部分19的开关部分20，滤波部分19对开关控制信号和RF发射信号进行滤波。切换部20设置在插入探针的磁铁内的探针体21内。过滤部分19布置在探针外部的测量装置4附近。切换部分20减小了对应于探头主体21的细长形状的厚度和宽度的横截面结构。因此，可以大大缩短从探针线圈到前置放大器的长度，以减少损耗。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2008122203A Nuclear magnetic resonance device and its operating method 有权
标题翻译：核磁共振装置及其操作方法
公开(公告)号：JP2008122203A
公开(公告)日：2008-05-29
申请号：JP2006305690
申请日：2006-11-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： PARK MINSEOK , HAGIWARA SHUYA , TANAKA HIDEKI
IPC分类号： G01R33/389
摘要： PROBLEM TO BE SOLVED: To reduce the interference between an experiment nucleus transmitting/receiving signal and a locking nucleus transmitting/receiving signal without lowering the sensitivity of an NMR device, and to alleviate requirements concerning the temperature stability of a sample.
SOLUTION: In the nuclear magnetic resonance device equipped with a magnet, a probe, an alternating current electric signal transmission system, a low-noise amplifier, one or more probe coils arranged in the probe, a tuning circuit connected to one of the probe coil(s), a transmission/reception switching circuit for connecting the tuning circuit and the alternating current electric signal transmission system and the low-noise amplifier, a detector connected to the low-noise amplifier, a locking coil arranged between the magnet and the probe, a locking power source for supplying current to the locking coil, and a locking controller for controlling the quantity of the current to be supplied by the locking power source, the low-noise amplifier and the tuning circuit and the transmission/reception switching circuit are made single, and a signal of a part frequency component of a signal detected from an atomic nucleus to be observed is input to the locking controller.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：降低实验核发射/接收信号与锁定核发射/接收信号之间的干扰，而不降低NMR装置的灵敏度，并且减轻对样品的温度稳定性的要求。解决方案：在配备有磁体，探针，交流电信号传输系统，低噪声放大器，布置在探头中的一个或多个探针线圈的核磁共振装置中，调谐电路连接到探针线圈，用于连接调谐电路和交流电信号传输系统和低噪声放大器的发送/接收切换电路，连接到低噪声放大器的检测器，布置在磁体之间的锁定线圈探针，用于向锁定线圈提供电流的锁定电源，以及用于控制由锁定电源，低噪声放大器和调谐电路以及发送/接收提供的电流量的锁定控制器将开关电路单一化，将从原子核检测的信号的部分频率成分的信号输入到锁定控制器。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2006071307A Discharge protecting apparatus of nmr probe 有权
标题翻译：核磁共振探测器放电保护装置
公开(公告)号：JP2006071307A
公开(公告)日：2006-03-16
申请号：JP2004251683
申请日：2004-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HAGIWARA SHUYA , HABARA HIDETA
IPC分类号： G01R33/36 , G01R33/20
摘要： PROBLEM TO BE SOLVED: To prevent damage due to dielectric breakdown of an antenna of a probe for a NMR apparatus and acquire a maximum load allowable under operating environments.
SOLUTION: A predischarge electrode for discharging at an electrical load lower than that of the antenna is provided for the vicinity of the antenna. Discharge generated by the predischarge electrode is detected by a current detector. On the basis of the phase of its current and temporal changes, the presence or absence of discharge is detected. By suppressing electrical output when the generation of discharge is detected at the predischarge electrode, the breakage of the antenna due to discharge is prevented. Maximum output allowable under environmental conditions in which the probe is arranged is highly reliability acquired.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了防止由NMR装置的探针的天线的介质击穿造成的损坏，并获得在操作环境下允许的最大负载。解决方案：在天线附近设置用于以比天线低的电负载放电的预放电电极。由电流检测器检测由放电电极产生的放电。在其当前和时间变化的阶段的基础上，检测是否存在放电。通过在预放电电极处检测出放电的产生时抑制电输出，防止由放电引起的天线断裂。安置探头的环境条件下允许的最大输出可靠性得到。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2000217289A ELECTRIC COIL FOR WATER COOLING AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2000217289A
公开(公告)日：2000-08-04
申请号：JP1146499
申请日：1999-01-20
申请人： HITACHI LTD
发明人： ASAKAWA HIDEAKI , GOTO KAZUO , KAMIYA HIROYUKI , ONODA MITSURU , HAGIWARA SHUYA
IPC分类号： H02K3/22 , H02K15/12
摘要： PROBLEM TO BE SOLVED: To provide an electric coil for water cooling that can prevent water leakage to the part between yarn stocks, even when gap corrosion occurs at the metal joint part between a coil winding conductor and a box for supplying and draining liquid, and has superior water resistance, and its manufacturing method. SOLUTION: Water-resistant resin is used as the sealing material of hollow and solid yarn stocks 5 and 6 for composing a coil winding conductor 2. The water-resistant resin is a thermosetting resin having no ester bonds in molecule structure, such as amine-curing-type epoxy resin, phenol-curing type epoxy resin, or amine-salt-catalyst curing type epoxy resin, thus improving the water resistance between the yarn stocks. More specifically, the sealing material between the yarn stocks is hard to undergo hydrolysis, even when gap corrosion occurs at the metal joint party between the coil winding conductor and a box for supplying and draining liquid, thus preventing leakage water between the wires from penetrating and progressing, preventing ground insulation from deterioration due to moisture and heat by the leakage water, and lowering the insulation performance of the ground insulation will not occurs.

6. 发明专利

JP2000146929A METHOD AND DEVICE FOR DIAGNOSING DETERIORATION OF INSULATING LAYER 失效
公开(公告)号：JP2000146929A
公开(公告)日：2000-05-26
申请号：JP31866698
申请日：1998-11-10
申请人： HITACHI LTD
发明人： HAGIWARA SHUYA , KAMIYA HIROYUKI , ONODA MITSURU , ASAKAWA HIDEAKI
IPC分类号： G01R31/12 , G01N27/92 , G01N29/12
摘要： PROBLEM TO BE SOLVED: To improve the precision of the deterioration diagnosis of an insulating layer such as the coil of a rotating electric device. SOLUTION: The deterioration of insulating characteristics is evaluated from the attenuation rate of a generated sound or vibration generated at the time of striking an insulating layer regardless of any electric non-destructive characteristics. The relation of the attenuation rate of an acoustic wave or vibration with an insulating break-down voltage is preliminarily captured as basic characteristic graphics. The attenuation rate of the acoustic wave or vibrating waveform of the insulating layer to be detected is calculated, and the insulating break-down voltage is calculated by referring to the basic characteristics. Thus, the local deterioration of the insulating layer can be evaluated with high precision.

7. 发明专利

JPH08317502A PANTOGRAPH 失效
公开(公告)号：JPH08317502A
公开(公告)日：1996-11-29
申请号：JP12110295
申请日：1995-05-19
申请人： HITACHI LTD
发明人： KOBAYASHI KENJI , MAKINO TOSHIAKI , HAGIWARA SHUYA
IPC分类号： B60L5/00
摘要： PURPOSE: To eliminate aerodynamic noise produced by a pantograph while travelling at high-speed by covering electromagnetic energy receiving equipment placed in the roof part of a vehicle with a stream-line dome. CONSTITUTION: This pantograph has a receiver equipment for receiving electromagnetic energy radiated from an electromagnetic energy radiation device for radiating the electromagnetic energy toward a vehicle 1 for railroad, which travels at the high speed of not less than 300km/h, in the roof part of the vehicle 1, and the receiving antenna is covered with a stream-line dome 2. Consquently, the stream of air in the periphery of the dome 2 is hardly put into disorder and separation is hard to bring about. Therefore, aerodynamic noise produced from a pantograph while travelling at high-speed can be eliminated.

8. 发明专利

JPH07255101A CURRENT COLLECTOR 失效
公开(公告)号：JPH07255101A
公开(公告)日：1995-10-03
申请号：JP4538394
申请日：1994-03-16
申请人： HITACHI LTD , HITACHI KASADO ENG KK
发明人： KAKEHI YUTAKA , TERADA KATSUYUKI , HARA KUNIYOSHI , MAKINO TOSHIAKI , HAGIWARA SHUYA
IPC分类号： B61D49/00 , B60L5/08
摘要： PURPOSE:To provide a low-noise current collector excellent in controllability, responsivity and adhesion to electric overhead lines, and thus suitable for rapid- transit railway rolling stock. CONSTITUTION:A current collector 20 is composed of a current-carrying mechanism as main structure, a housing dome 4 and so on. The current-carrying mechanism consists of a contact strips 21a, 21b that are brought into contact with electric overhead lines 1 and collects current; a current-collecting body 22 that supports the contact strips 21a, 21b; a support insulator 30 that supports the current-collecting body 22; and a cable head 50. The current-collecting body 22 is controlled and moved up/down together with the support insulator 30 by means of an actuator 32 so that a proper contact force will be maintained between electric overhead lines 1 and the contact strips 21a, 21b. A spring 34 is placed between the current-collecting body 22 and the actuator 32 so as to easily follow vibrations of relatively high frequency that may be produced between electric overhead line hangers.

9. 发明专利

JPH06209570A MULTIPLE-OUTPUT DC-DC CONVERTER 失效
公开(公告)号：JPH06209570A
公开(公告)日：1994-07-26
申请号：JP61293
申请日：1993-01-06
申请人： HITACHI LTD
发明人： KANOUDA TAMAHIKO , TAKAHASHI TADASHI , HORIE HIDEAKI , ONDA KENICHI , HAGIWARA SHUYA
IPC分类号： G05F1/56 , H01F30/00 , H02M3/28 , H02M3/335
摘要： PURPOSE:To obtain two systems of voltage output from one transformer and at the same time achieve miniaturization and thinning and reduce loss by using a thin transformer, connecting a series circuit consisting of a diode and a capacitor to the primary coil winding side and then accumulating excitation energy released when a switching element is turned off to obtain an output voltage. CONSTITUTION:The input voltage from a power supply 1 is smoothed by a smoothing capacitor 2 and is applied to the primary coil winding of a thin-type transformer 6 via an FET 5a whose switching timing is adjusted by a control circuit 3. The voltage of the secondary coil winding of the thin-type transformer 6 is supplied to an external load 10b via FETs 14a and 14b for synchronous rectification of the secondary coil winding, a choke coil 8 for smoothing, and a capacitor 9a for smoothing. Also, when the FET 5a is turned off, excitation energy is released to a series circuit consisting of a capacitor 12 and a diode 4a at the primary side of the thin-type transformer 6 and the charge voltage of the capacitor 12 is stabilized by an output voltage stabilization circuit 11 and is supplied to another external load 10b via a capacitor 9b for smoothing.

10. 发明专利

JPH0696964A LEAD WIRE STRUCTURE OF TRANSFORMER FOR POWER SUPPLY DEVICE 失效
公开(公告)号：JPH0696964A
公开(公告)日：1994-04-08
申请号：JP24300592
申请日：1992-09-11
申请人： HITACHI LTD
发明人： HAGIWARA SHUYA , ONDA KENICHI , TAKAHASHI TADASHI , KANOUDA TAMAHIKO , HORIE HIDEAKI
IPC分类号： H01F27/28 , H01F30/00 , H01F31/00
摘要： PURPOSE:To improve the connection between a primary and secondary circuits by closely arranging one of two primary-side lead wires to one of secondary-side lead wires through which currents flow in the opposite direction in a combined state. CONSTITUTION:A transformer 1 is connected to a primary-side circuit 2 through lead wires 21 and 22 and to a secondary-side circuit 3 through lead wires 31 and 32. The lead wires 21 and 31 and 22 and 32, through which electric currents flow in the opposite directions, are respectively arranged closely to each other. Or, two sets of mutual induction conductors having different current values and opposite current flowing directions can be constituted of the primary- and secondary-side lead wires of the transformer. In case the primary- and secondary-side currents are different from each other, the mutual induction conductors can be constituted so that a mutual induction action can be generated in the composite conductors including crossover wires in addition to the lead wires on both sides. Therefore, the connection between primary and secondary circuits which are connected through the transformer can be improved and the power converting efficiency of the transformer can be improved.

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