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11. 发明专利

JP2005090967A Signal transmitter 有权
标题翻译：信号发射器
公开(公告)号：JP2005090967A
公开(公告)日：2005-04-07
申请号：JP2003320550
申请日：2003-09-12
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OKADA SATOSHI , ARITA SETSUO , NOZAKI TAKESHI , SAKATA TOMOTAKA
IPC分类号： G21C17/00 , G21C17/108 , H04B3/30 , H04B15/02
摘要： PROBLEM TO BE SOLVED: To reduce noises mingling in a signal cable in a weak current signal transmitter, especially an SRNM detector in a nuclear power plant.
SOLUTION: In the SRNM measuring instrument in the nuclear power plant, a weak current from a fission chamber for an activation range input from a transmission cable is charged and amplified by a preamplifier circuit in a preamplifier and is transmitted by an SRNM signal transmission cable. Meanwhile, a core wire of the SRNM signal transmission cable connects with a signal output terminal in an SRNM processor and a core wire and a shield of a preamplifier power source supply cable connects with a direct current power source. Then, ferrite for removing common-mode noises is mounted on a terminal, or a part connecting with the preamplifier, of the preamplifier power source supply cable. Moreover, ferrite for removing in a normal mode is mounted near a power source supply point in a part of a core wire in the preamplifier.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：减少弱电信号发射机，特别是核电站中的SRNM探测器的信号电缆中的噪声混合。
解决方案：在核电站的SRNM测量仪器中，来自传输电缆输入的激活范围的裂变室的弱电流由前置放大器中的前置放大器电路充电并放大，并通过SRNM信号传输传输电缆同时，SRNM信号传输电缆的芯线与SRNM处理器中的信号输出端子连接，芯线和前置放大器电源电缆的屏蔽与直流电源连接。然后，用于去除共模噪声的铁氧体安装在前置放大器电源电缆的端子或与前置放大器连接的部分上。此外，用于在正常模式中去除的铁氧体安装在前置放大器的芯线的一部分中的电源供应点附近。版权所有（C）2005，JPO＆NCIPI

12. 发明专利

JP2001074876A NUCLEAR REACTOR OUTPUT-MEASURING DEVICE 失效
公开(公告)号：JP2001074876A
公开(公告)日：2001-03-23
申请号：JP25530499
申请日：1999-09-09
申请人： HITACHI LTD
发明人： ARITA SETSUO , HASEGAWA MAKOTO , ISHII KAZUHIKO , NOZAKI TAKESHI
IPC分类号： G21C17/108 , G21C17/10
摘要： PROBLEM TO BE SOLVED: To accurately calibrate the sensitivity of a γ-ray detector by accurately evaluating the calorific value of a heater for calibration even if the resistance of the heater for calibration itself changes. SOLUTION: The measuring device is provided with γ-ray detectors 4a-4k for measuring the calorific value of metal due to γ rays being generated in a reactor, a heater for applying heat to the γ-ray detectors 4a-4k, a power supply device 133 for supplying power to the heater through a cable 4H, and a calibration means 123 for calibrating the sensitivity of the γ-ray detectors 4a-4k based on a voltage across both terminals of the heater being measured at a connector 16 that is a connection point between the heater and the cable 4H, a current flowing to the heater, and the output signal of the γ-ray detectors 4a-4k when heat is applied by the heater.

13. 发明专利

JP2001033580A AUTOMATIC CALIBRATION DEVICE FOR REACTOR POWER 失效
公开(公告)号：JP2001033580A
公开(公告)日：2001-02-09
申请号：JP20260199
申请日：1999-07-16
申请人： HITACHI LTD
发明人： ISHII KAZUHIKO , ARITA SETSUO , HASEGAWA MAKOTO , NOZAKI TAKESHI
IPC分类号： G21C17/108 , G21C17/10
摘要： PROBLEM TO BE SOLVED: To shorten the time for plant startup by automatically and efficiently conducting calibration of reactor power measured with a neutron monitor and efficiently proceeding the operation plan as a part of plant operation plan. SOLUTION: In a reactor power measuring system installing local power detectors measuring thermal neutron flux in a reactor, γ-ray thermometers and heaters in the same detector assembly, a plant automating system 8 for storing and indicating the plant operation plan, storing and indicating execution timing of calibrating the reactor power measured with neutron monitors using local power detectors based on the reactor power measured with the reactor power measuring device using the γ-ray thermometers and directing the executing timing of the calibration is provided. A reactor power measuring device 4 executing self-calibration of the output signal of the γ-ray thermometers by heater based on the direction of the system 8 is provided. Also, a core performance calculation system 7 calibrating the reactor power measured with the neutron monitor 6 in succession to the self-calibration is provided.

14. 发明专利

JPH11258043A INFRARED RAY TRACKING TYPE ITV MONITOR 失效
公开(公告)号：JPH11258043A
公开(公告)日：1999-09-24
申请号：JP5642698
申请日：1998-03-09
申请人： HITACHI LTD
发明人： NOGUCHI NAOKI , NOZAKI TAKESHI
IPC分类号： G08B17/12 , G01J1/42
摘要： PROBLEM TO BE SOLVED: To display an object in the center of an image screen by automatically tracking the infrared ray radiating object by constituting a monitor of a means for changing an attitude of an infrared ITV camera, a means for generating a signal for controlling an attitude of the camera and a means for displaying an image of the camera. SOLUTION: A universal head device 102 for holding an attitude of an infrared ITV camera 101 is driven by motors 103a, 103b. An image output signal of the infrared ITV camera 101 is processed by an image processor 109 to discriminate a monitoring object image and the position. A driving command is generated according to a deviation quantity between an image position and an image center position to be outputted to a motor driver 10 through a switch 106. The motor driver 105 supplies motor driving electric power to the motors 103a, 103b according to the driving command. By successively continuing such processing, the monitoring object image existing on the periphery of an image screen can be automatically brought into center of the image screen or can be captured in the center of the image screen by automatically tracking it even when a monitoring object moves.

15. 发明专利

JP2005345398A Device for measuring reactor output 有权
标题翻译：用于测量反应器输出的装置
公开(公告)号：JP2005345398A
公开(公告)日：2005-12-15
申请号：JP2004167897
申请日：2004-06-07
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUSHIMI ATSUSHI , ARITA SETSUO , FURUSATO KENICHIRO , NOZAKI TAKESHI
IPC分类号： G21C17/10 , G21C17/108
摘要： PROBLEM TO BE SOLVED: To provide a device for measuring reactor output which enables the highly accurate calibration of a neutron detector for monitoring local output even if any of γ-ray thermometers are faulty and makes it possible to minimize the number of the γ-ray thermometers to be installed.
SOLUTION: In the device for measuring reactor output where detector assemblies are vertically placed in parallel with each other in a reactor core and which is equipped with the neutron detector placed in various vertical positions inside the detector assemblies in order to monitor the local output of the core and a gamma thermometer formed like a bar out of the γ-ray thermometers located in various vertical positions and a heater wire used to calibrate the γ-ray thermometers, two of them are mounted only in the vicinity of the highest and/or lowest end positions of the neutron detector and at most one γ-ray thermometer is respectively placed in the vicinity of the neutron detector located in positions other than the highest or lowest ends.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种用于测量电抗器输出的装置，即使γ射线温度计有任何错误，也能够高精度地校准用于监测局部输出的中子检测器，并且使得能够最小化要安装的γ射线温度计。
解决方案：在用于测量反应堆输出的装置中，检测器组件在反应堆堆芯中彼此垂直放置并且配备有放置在检测器组件内部的各种垂直位置的中子检测器，以便监视本地芯线的输出和位于各种垂直位置的γ射线温度计之外形成为棒状的伽马温度计，以及用于校准γ射线温度计的加热丝，其中两根仅安装在最高和 /或中子探测器的最低端位置和至多一个γ射线温度计分别放置在位于除最高或最低端之外的位置的中子探测器附近。版权所有（C）2006，JPO＆NCIPI

16. 发明专利

JP2002202395A REACTOR POWER MEASUREMENT DEVICE 失效
公开(公告)号：JP2002202395A
公开(公告)日：2002-07-19
申请号：JP2000401617
申请日：2000-12-28
申请人： HITACHI LTD
发明人： FUSHIMI ATSUSHI , ARITA SETSUO , FUKUYA HAJIME , ISHII KAZUHIKO , NOZAKI TAKESHI
IPC分类号： G21C17/10
摘要： PROBLEM TO BE SOLVED: To accurately correct delayed gamma ray component contained in a gamma ray measurement even in the case varying the core state by adjusting a correction model set in advance based on the information concerning the core state and the information of output of a local power region monitor with quicker response and the like. SOLUTION: To a reactor power measurement device having a plurality of fixed type gamma ray detectors 4 placed in the reactor and a data processor 8 processing signals output from the fixed type gamma ray detectors and outputting gamma ray measurement values, a delayed gamma ray correction means 9 for correcting the contribution of the delayed gamma ray component not responding to the power by using the gamma ray measurement values following a preinstalled correction model and outputting the correction values at an arbitrary time and an input means 14 for altering and adjusting the parameters of the correction model. Here, for the correction model, a model for arranging nuclear transformation discharging delayed gamma ray into a plurality of groups of decay time constants and calculating the contribution of total delayed gamma ray as the sum of contribution of each group is used. As for the decay time constants, ones containing at least minute order to hour order are used.

17. 发明专利

JP2001099981A NUCLEAR REACTOR POWER MEASURING DEVICE 失效
公开(公告)号：JP2001099981A
公开(公告)日：2001-04-13
申请号：JP27817899
申请日：1999-09-30
申请人： HITACHI LTD
发明人： ARITA SETSUO , HASEGAWA MAKOTO , MARUYAMA HIROMI , ISHII KAZUHIKO , NOZAKI TAKESHI
IPC分类号： G21C17/10
摘要： PROBLEM TO BE SOLVED: To make accurately correctable in a short time the effect of a delayed gamma ray on output signals of those from a gamma ray detector, and to make calculable the calibration constant of a neutron detector with a calculator on the basis of these corrected gamma ray detection signals. SOLUTION: This device is provided with gamma ray detectors 4a to 4k for measuring a heat generation value of a metal due to gamma rays generated inside a nuclear reactor, a data processing device 12 for inputting output signals outputted from the gamma ray detectors, and a calculator 14 determining reactor power on the basis of a gamma ray detection signal outputted from the data processing device 12. The data processing device is provided a delayed gamma ray correcting part 121 correcting a delayed gamma ray component on the basis of time series data of the inputted output signals from the gamma ray detectors, and a calculator determining reactor power on the basis of a gamma ray detection signal of the corrected delayed gamma ray component.

18. 发明专利

JPH112690A NEUTRON BUNDLE MEASURING DEVICE IN NUCLEAR REACTOR 失效
公开(公告)号：JPH112690A
公开(公告)日：1999-01-06
申请号：JP15539497
申请日：1997-06-12
申请人： HITACHI LTD
发明人： NOZAKI TAKESHI , TOKAWA YUICHI
IPC分类号： G21C17/108 , G21C17/10
摘要： PROBLEM TO BE SOLVED: To secure safety of a plant and integrity of fuel by correcting an error caused by mismatching of fuel substance and detector substance at the time of a transient event in which a neutron energy spectrum changes in a nuclear reactor having various core characteristics. SOLUTION: In the case where it is difficult that the coating substance of a detector 4 in a neutron bundle measuring device in a nuclear reactor and fuel substance used in the nuclear reactor are made the same substance, the LPRM(LocaI Output Neutron Monitor) level signal 7 of an LPRM level operation circuit 6 is corrected by a correction circuit 8 in the case where a transient event in which a neutron energy spectrum changes occurs. With regard to correction by the correction circuit 8, an LPRM level correction coefficient 56 is calculated by the position void rate 55 of an LPRM detector, and multiplied by an LPRM level signal 7 to be corrected.

19. 发明专利

JPH07159575A ATOMIC REACTOR OUTPUT CONTROL DEVICE 失效
公开(公告)号：JPH07159575A
公开(公告)日：1995-06-23
申请号：JP30374793
申请日：1993-12-03
申请人： HITACHI LTD , HITACHI NUCLEAR ENG
发明人： NOZAKI TAKESHI , ISHIDA TAKAYUKI , KAWASAKI TAKEHIDE
IPC分类号： G21C7/08 , G21D3/00 , G21D3/04
摘要： PURPOSE:To reduce overshoot by suppressing a rise of the reactor output due to a disturbance such as a momentary power stoppage, avoiding an unnecessary scram of the reactor, and setting down the reactor output set value immediately after the occurrence of the disturbance. CONSTITUTION:This atomic reactor output control device feeds a bus voltage low signal 14 to a control rod control device 100, sets the switch of a switching function 105 to the selection (a), and sets down the reactor output set value to avoid an unnecessary scram of the reactor. After a disturbance is recovered, the switch of the switching function 105 is set to the selection (b) and a switching function 109 is set to the selection (a) by the AND condition of a reactor output set-down set value 112, a re-circulating pump rating 113, and the bus voltage low signal 14, and thereby, reactor output is recovered.

20. 发明专利

JP2008008758A Control rod lifting monitor 有权
标题翻译：控制杆升降监控
公开(公告)号：JP2008008758A
公开(公告)日：2008-01-17
申请号：JP2006179514
申请日：2006-06-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KIMURA HIROYUKI , NOZAKI TAKESHI
IPC分类号： G21C7/08 , G21C17/10
CPC分类号： Y02E30/31 , Y02E30/39
摘要： PROBLEM TO BE SOLVED: To operate a nuclear reactor on a safer side by controlling a local output rise due to the lifting operation of a control rod 103 in an operation range of the nuclear reactor from a low output state up to a rated output state.
SOLUTION: A control rod lifting monitor for stopping the lifting operation of a single control rod or a plurality of control rods according to the output level of a boiling water reactor comprises: a local output signal processing section to which neutron flux signals 118-1 to 118-n outputted from a neutron flux detector 105 for detecting a neutron flux around the control rod 103 are inputted for calculating the control rod monitor value of the control rod; and a stopping means for stopping the lifting operation of the control rod when the control rod monitor value reaches a control rod lifting inhibition set value by comparing the control rod lifting inhibition set value (RBL value) obtained by adding a set value to a current control rod monitoring value calculated by the local output signal processing section with the control rod monitor value (RBM value) related to the axial position of the control rod thereafter.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：通过控制由于核反应堆的运行范围内的控制棒103的提升操作而导致的局部输出上升，从较低的输出状态直到额定值输出状态。解决方案：根据沸水反应堆的输出水平，用于停止单个控制棒或多个控制棒的提升操作的控制杆提升监视器包括：本地输出信号处理部分，中子通量信号118 输入用于检测控制棒103周围的中子通量的中子通量检测器105输出的-1〜118-n，用于计算控制棒的控制杆监视值; 以及停止装置，用于通过将通过将设定值相加得到的控制杆提升禁止设定值（RBL值）与电流控制值（RBL值）进行比较来控制控制杆监视值达到控制杆提升禁止设定值来停止控制棒的提升操作杆状监测值由本地输出信号处理部分计算，其控制棒的监控值（RBM值）与其后的控制棒的轴向位置相关。版权所有（C）2008，JPO＆INPIT

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