专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

81. 发明专利

JPS52140794A DETECTING PIPING FOR VESSEL 失效
公开(公告)号：JPS52140794A
公开(公告)日：1977-11-24
申请号：JP5670076
申请日：1976-05-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： HASEGAWA TOORU , KIKUCHI TAKASHI
IPC分类号： G21C17/02 , G21C17/00
摘要： PURPOSE:To intend to lower the temperature of a measuring piping and to prevent stress corrosion cracking, by means of connecting a measuring piping for a detector to a measuring nozzle via a contractionof area, in a vessel which contains high temp. fluid and has a measurin nozzle for connecting the detector.

82. 发明专利

JP2003204622A BUS-BAR PROTECTOR 审中-公开
公开(公告)号：JP2003204622A
公开(公告)日：2003-07-18
申请号：JP2002002077
申请日：2002-01-09
申请人： HITACHI LTD
发明人： OSUMI TAKASHI , NORO JUN , KUME AYATO , KIKUCHI TAKASHI
IPC分类号： H02B13/065 , H02H3/28
摘要： PROBLEM TO BE SOLVED: To provide a bus-bar protector which can readily identify a bus-bar on which a failure occurs, even if the number of terminals of auxiliary switches, by which open/close signals of disconnectors are obtained, is reduced. SOLUTION: Respective contacts 2A-2C of auxiliary switches of respective disconnectors 2a-2c are used concurrently for both a circuit 1 and a circuit 2. Two disconnector condition input circuits 16a and 16b are connected to each other with jumper wires 10a-10c. With such a constitution, even if respective one terminal cannot be alotted to each of the disconnectors 2a-2c of one circuit, the terminals corresponding to two lines can be connected to a terminal block 13. A decision circuit 17, which decides whether the open/close signals inputted from respective connection lines 14a-14c and 15a-15c are signals for the circuit 1 or the signals for the circuit 2, is provided, and whether a bus-bar having a failure is bus-bar A 1a or a bus-bar B 1b is decided by the decision circuit 17. COPYRIGHT: (C)2003,JPO

83. 发明专利

JPH01273848A FUEL FEED QUANTITY CONTROLLER 失效
公开(公告)号：JPH01273848A
公开(公告)日：1989-11-01
申请号：JP10122888
申请日：1988-04-26
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： KAMEDA KAZUNOBU , MORITA KIYOMI , KIKUCHI TAKASHI , TANABE YOSHIYUKI
IPC分类号： F02D41/00 , F02D41/14 , F02D41/34 , F02D45/00
摘要： PURPOSE:To permit the air-fuel ratio control with high precision by memorizing a correction value in the result of learning from the difference between an actual air-fuel ratio and aimed air-fuel ratio and successively integration-calculating a part of the correction value at each time when the correction value is memorized into a memory map and correcting the correction coefficient searched from the memory, by the integration-calculation value. CONSTITUTION:In a calculation part C, the fundamental supplied fuel quantity is calculated by adding the correction according to the cooling water temperature detected by a cooling water temperature sensor 8, onto the engine load calculated in a calculation part A and the engine revolution speed measured by a measurement part B. Further, in an air-fuel ratio feedback control part D, the air-fuel ratio feedback coefficient is obtained according to the actual air-fuel ratio detected by an air-fuel ratio sensor 2, and in a learning part E, said coefficient is memorized in division in the pertinent region of an air-fuel ratio correction coefficient map 1306 divided by the engine revolution speed and the load and an air-fuel ratio deviation coefficient 1307 which is common in all the regions. Then, in a calculation part F, the learning correction value is obtained from the value of the map 1306 and the air-fuel ratio deviation coefficient 1307, and in a correction part G, the fundamental supplied fuel quantity is corrected from the learning correction value and the air-fuel ratio feedback coefficient.

84. 发明专利

JPS62278412A WATER LEVEL MEASURING INSTRUMENT IN NUCLEAR REACTOR 失效
公开(公告)号：JPS62278412A
公开(公告)日：1987-12-03
申请号：JP12111286
申请日：1986-05-28
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： ISHII KUNIO , KIKUCHI TAKASHI
IPC分类号： G01F23/14
摘要： PURPOSE:To enable a nuclear reactor water level to be always accurately measured by providing a low pressure side detecting pipeline with a pressure gage and an arithmetic unit, detecting changes in a reference water level and correcting a measured water level value. CONSTITUTION:A pressure gage 4 is provided in a low pressure wide detecting pipeline below a reference level gage 3 and an arithmetic unit 7 is provided between a water gate 6 and a level indicator 8. A change in a reference water level due to a sudden change in the pressure of a nuclear reactor 1 is detected as a change in a water head. Since there has been the change in the reference water level, the measured value of the water gage 6 includes an error corresponding to the change in the water head. Accordingly, a quantity corresponding to the change in the water head detected by the pressure gate 4 is corrected by the arithmetic unit 7 and a corrected value is outputted to the indicator 8 whereby an accurate nuclear reactor water level can be obtained.

85. 发明专利

JPS62233725A SUPPORTING METHOD FOR LEVEL SWITCH PROTECTION PIPE 失效
公开(公告)号：JPS62233725A
公开(公告)日：1987-10-14
申请号：JP7659786
申请日：1986-04-04
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KIKUCHI TAKASHI
IPC分类号： G01F23/00 , G01F23/56
摘要： PURPOSE:To eliminate such a trouble that a level switch does not operate owing to the influence of a stirring flow generated at the time of stirring and conveyance in a subtank, etc., by a pump and the curvature of a protection pipe caused by an earthquake by supporting the protection pipe of the level switch by a protection support guide whose upper part spreads. CONSTITUTION:The level switch 1, level switch protection pipe 3, and protection pipe support guide 8 are provided and the protection guide 8 is fixed to a support material 6 by a U-shaped bolt 7. The upper part of the protection pipe support guide 8 spreads, so the protection pipe 3 can be stored even from the position of a cover 2. When this protection pipe 3 is detached, it can be drawn out from the position of the cover 2 and the protection pipe 3 is detached to enable the cover 2 to be detached. When the cover is detached, the detaching operation is easily performed and operation in an radiation atmosphere is performed in a short time even if there is radioactivity in a nuclear power plant, etc.

86. 发明专利

JP2009110183A Computer startup method and computer system 有权
标题翻译：计算机启动方法和计算机系统
公开(公告)号：JP2009110183A
公开(公告)日：2009-05-21
申请号：JP2007280577
申请日：2007-10-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATAGIRI ISAMU , SAITO KOJI , SHIMADA KIYOTAKA , KIKUCHI TAKASHI
IPC分类号： G06F9/445 , G06F13/10
摘要： PROBLEM TO BE SOLVED: To enable computer startup at higher speed even in such a case that startup disks for a plurality of computers in a data center, etc., are frequently modified.
SOLUTION: In a plurality of memory media 131a-131c respectively owned by computers 130a-130c, by preserving the same contents as the startup disks preserved in a magnetic memory device 140 on a SAN environment, and by initiating each computer from the startup disk owned by the own computer, the computer can be initiated at higher speed as compared to the case of initiating the computer from the startup disk in the magnetic memory device on the SAN environment having a conflict concerning the magnetic memory device.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使在数据中心等中的多台计算机的启动盘经常被修改的情况下，也能够以更高的速度启动计算机启动。解决方案：在由计算机130a-130c分别拥有的多个存储介质131a-131c中，通过保留与保存在SAN环境中的磁存储器设备140中的启动盘相同的内容，并且通过从与自己的计算机拥有的启动盘相比，与在具有与磁存储器件相关的冲突的SAN环境中的磁存储器装置中的启动盘启动计算机的情况下，可以以更高的速度启动计算机。版权所有（C）2009，JPO＆INPIT

87. 发明专利

JP2007068325A Current differential relay device 审中-公开
标题翻译：电流差分继电器
公开(公告)号：JP2007068325A
公开(公告)日：2007-03-15
申请号：JP2005251100
申请日：2005-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KUMAGAI KAZUAKI , KIKUCHI TAKASHI
IPC分类号： H02H3/28
CPC分类号： H04J3/0667
摘要： PROBLEM TO BE SOLVED: To improve the accuracy of sampling synchronization control by correcting an up-and-down transmission delay time related to data transmission between current differential relays. SOLUTION: This current differential relay device comprises the current differential relays arranged at a plurality of terminals that define protecting zones of a power cable. The relay device is also characterized in that each current differential relay comprises a correction means (control 1A to 1C) that acquires a phase difference of sampling data of a current or a voltage of the power cable between an own terminal and an opposite party terminal, phase-shifts the sampling current in accordance with the acquired phase difference, and corrects a sampling synchronization error caused by the transmission delay time of the sampling current. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过校正与电流差动继电器之间的数据传输相关的上下传输延迟时间来提高采样同步控制的精度。解决方案：该电流差动继电器装置包括布置在多个端子处的电流差动继电器，其限定电力电缆的保护区域。该继电器装置的特征还在于，各电流差动继电器包括获取自身端子与对方端子之间的电力电缆的电流或电压的采样数据的相位差的校正装置（控制1A〜1C）根据获取的相位差对采样电流进行相移，并校正由采样电流的传输延迟时间引起的采样同步误差。版权所有（C）2007，JPO＆INPIT

88. 发明专利

JP2007010503A Reservoir tank 审中-公开
标题翻译：储藏罐
公开(公告)号：JP2007010503A
公开(公告)日：2007-01-18
申请号：JP2005192180
申请日：2005-06-30
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , 日立エンジニアリング株式会社 , 株式会社日立製作所
发明人： KIKUCHI TAKASHI
IPC分类号： G01M3/04 , G01M3/16
摘要： PROBLEM TO BE SOLVED: To quickly locate a leakage part when a conductive liquid reserved in a tank which is made up by bonding plate materials, leaks therefrom. SOLUTION: A reservoir tank is provided, wherein a leakage detection groove 2 is arranged along a weld line of a lining tank 11a, and a leakage detection sensor cable 4 which is made up by winding a pair of electrode lines spirally, is disposed therein. A power supply 16 is used for applying a voltage across the pair of the electrode lines, and the electrode lines 12 are made short-circuited at a leakage location when the conductive liquid leaks from the lining tank 11a. The reservoir tank comprises: a switch 6 operated by flowing current caused by the short-circuiting; an alarm device 7 which outputs an alarm in response to the operation of the switch 6; an ammeter 8 for measuring the current; a location input device 9 for detecting a short-circuited leakage detecting sensor cable 4; an arithmetic means 18 which outputs a short circuit location based on an electric resistance property of the electrode lines 12 and respective outputs from the ammeter 8 and the location input device 9; and a location displaying device 10 which displays the leakage location on a screen based on an output from the arithmetic means 18. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：当通过粘结板材料制成的储存在罐中的导电液体从其泄漏时，快速定位泄漏部分。解决方案：提供储罐，其中泄漏检测槽2沿着衬里槽11a的焊接线布置，并且通过螺旋地缠绕一对电极线构成的泄漏检测传感器电缆4是在其中。电源16用于在一对电极线上施加电压，并且当导电液体从衬里槽11a泄漏时，电极线12在泄漏位置被短路。储罐包括：由短路引起的流动电流操作的开关6; 响应于开关6的操作而输出报警的报警装置7; 用于测量电流的电流计8; 用于检测短路泄漏检测传感器电缆4的位置输入装置9; 输出基于电极线12的电阻特性和来自电流表8和位置输入装置9的相应输出的短路位置的算术装置18; 以及位置显示装置10，其基于来自算术装置18的输出，在屏幕上显示泄漏位置。（C）2007年，JPO和INPIT

89. 发明专利

JP2006246680A Pcm current differential guard relay device 审中-公开
标题翻译： PCM电流差动保护继电器
公开(公告)号：JP2006246680A
公开(公告)日：2006-09-14
申请号：JP2005062704
申请日：2005-03-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KUMAGAI KAZUAKI , KIKUCHI TAKASHI , HYODO KAZUYUKI
IPC分类号： H02H3/28
摘要： PROBLEM TO BE SOLVED: To perform sampling synchronization of a PCM current differential relay with accuracy at high speed when transmission error is restored. SOLUTION: Two or more PCM current differential relays 16A-16C are provided in accordance with two or more terminals, which constitute a protecting sections of a power cable 11. In each PCM current differential relay, a current of the power cable at self terminal is subjected to sampling and converted to a PCM signal, and each PCM signal is transmitted and compared with each other through the transmission line so that a failure in the protecting section is detected in the PCM current differential relay. The sampling synchronization operation of current with another PCM current differential relay at another terminal can be performed by one PCM current differential relay, which is provided in accordance with one terminal. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：在恢复传输错误时，以高速精确地执行PCM电流差动继电器的采样同步。
解决方案：根据构成电力电缆11的保护部分的两个或更多个端子提供两个或更多个PCM电流差动继电器16A-16C。在每个PCM电流差动继电器中，电力电缆的电流在对自身端子进行采样并转换为PCM信号，并通过传输线将每个PCM信号进行传输和比较，从而在PCM电流差动继电器中检测出保护部分的故障。另一端的另一个PCM电流差动继电器的电流采样同步操作可以由一个PCM电流差动继电器执行，该继电器根据一个端子提供。版权所有（C）2006，JPO＆NCIPI

90. 发明专利

JP2006014400A Differential current monitor 审中-公开
标题翻译：差分电流监视器
公开(公告)号：JP2006014400A
公开(公告)日：2006-01-12
申请号：JP2004183987
申请日：2004-06-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HYODO KAZUYUKI , NORO JUN , KIKUCHI TAKASHI
IPC分类号： H02H7/045
摘要： PROBLEM TO BE SOLVED: To provide a differential current monitor in which a differential current monitoring logic is standardized by substantially eliminating the need for setting a timer at each site.
SOLUTION: The differential current monitor comprises: a differential current detection circuit 1 for comparing a current flowing into a power facility apparatus with a current flowing out therefrom, and detecting the differential current of unbalance component corresponding to a fault current at the time of tripping a circuit breaker by outputting a trip signal upon occurrence of fault in the apparatus; and a differential current monitoring timer 4 for locking output of the trip signal until the differential current of unbalance component sustains for a predetermined time or longer. The monitor is further provided with: a circuit 2 for detecting the second harmonic from a current signal; and a gate circuit 3 for stopping output from the differential current detection circuit 1 to the differential current monitoring timer 4 when the detected second harmonic is not lower than a predetermined level.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种差分电流监视器，其中通过基本上消除在每个位置设置定时器的需要来对差分电流监视逻辑进行标准化。差动电流监视器包括：差动电流检测电路1，用于将流入电力设备装置的电流与从其流出的电流进行比较;以及检测与此时的故障电流对应的不平衡成分的差动电流通过在设备中发生故障时输出跳闸信号来跳闸断路器; 以及用于锁定跳闸信号的输出的差动电流监视定时器4，直到不平衡部件的差动电流保持预定时间或更长时间。该监视器还设有：用于从当前信号检测二次谐波的电路2; 以及门电路3，用于当所检测到的二次谐波不低于预定电平时，将差分电流检测电路1的输出停止到差动电流监视定时器4。版权所有（C）2006，JPO＆NCIPI

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