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1. 发明专利

JP2007292655A Method and device for preventive maintenance on annulus section in reactor 有权
标题翻译：在反应器中防止维护的方法和装置
公开(公告)号：JP2007292655A
公开(公告)日：2007-11-08
申请号：JP2006122127
申请日：2006-04-26
申请人： Hitachi Ltd , Sugino Mach Ltd , 株式会社スギノマシン , 株式会社日立製作所
发明人： INADA TAKASHI , KUROSAWA KOICHI , KASHIWAKURA JUN , YOSHIKUBO FUJIO , HAYATA TAKASHI , NAKADA MASAHIRO , TAKAKURA EIJI
IPC分类号： G21C19/02 , G21D1/00
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for the easy and highly efficient preventive maintenance on welds of an annulus section in a reactor by enabling a stable movement of a preventive maintenance mechanism in water. SOLUTION: The preventive maintenance device for the annulus section in the reactor is constituted of a rail feeding mechanism 16 mounted on a baffle plate 6, a rail 17 laid in an interstice between a reactor pressure vessel 1 and a jet pump diffuser 7 or an interstice between a shroud support cylinder 4 and the jet pump diffuser 7 by using the rail feeding mechanism 16, a cable/hose feeding mechanism 34 mounted at an end of the rail 17, a cable 24/a hose 25 let off and drawn by the cable/hose feeding mechanism 34 and a preventive maintenance mechanism 26 guided by the rail 17 by driving the cable 24/hose 25 feeding mechanism 34 and transported in the direction along the interstices. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种方法和装置，用于通过使预防性维护机构稳定地运动在水中来实现对反应器中的环形部分的焊缝的容易且高效的预防性维护。解决方案：反应堆中的环形部分的预防性维护装置由安装在挡板6上的导轨进给机构16，布置在反应堆压力容器1和喷射泵扩散器7之间的间隙中的轨道17构成或者通过使用轨道进给机构16，护罩支撑筒4和喷射泵扩散器7之间的间隙，安装在轨道17的端部的电缆/软管馈送机构34，电缆24 /软管25释放和拉出通过电缆/软管进给机构34和由轨道17引导的预防性维护机构26，通过驱动电缆24 /软管25进给机构34并沿着间隙的方向传送。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2004274812A Method for supporting to maintain power quality in distribution system and system 审中-公开
公开(公告)号：JP2004274812A
公开(公告)日：2004-09-30
申请号：JP2003058448
申请日：2003-03-05
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： UCHIYAMA TOMOYUKI , ONO YASUNORI , WATANABE SHIGERU , SAITO KATSUAKI , KASHIWAKURA JUN , SHIMAMURA HIDEHIKO , TANIGUCHI YOICHIRO
IPC分类号： H02J3/38 , H02J3/46
摘要： PROBLEM TO BE SOLVED: To maintain the power quality in a distribution system in which many distributed power sources are linked. SOLUTION: A quality control center 1 delivers and receives the information to and from a distribution and transformer station control system 3 and each customer via communication lines 41, 42. The quality control center 1 monitors the system state of the customers' power source operation data and distribution system on line. As a result, if a voltage control value is deviated, the quality control center 1 selects the corresponding system control device and the customer's distributed power source, cooperates them, calculates their control values, and transmits the control values to the customer (for example, A) and the distribution and transformer station control system 3. COPYRIGHT: (C)2004,JPO&NCIPI

3. 发明专利

JP2001296400A LIQUID METAL TARGET SYSTEM 失效
公开(公告)号：JP2001296400A
公开(公告)日：2001-10-26
申请号：JP2000121055
申请日：2000-04-17
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： HAYASHI KATSUMI , KASHIWAKURA JUN , NITAWAKI TAKESHI , OGAWA YUKIO
IPC分类号： G21F9/28 , G21K5/00 , G21K5/02 , G21K5/08
摘要： PROBLEM TO BE SOLVED: To provide an environment of a low radiation dose in maintenance and inspection work by a liquid metal target system that restrains the retention of adherends like oxides and other substances, containing radioactive substances, on the inside surface of piping. SOLUTION: A line 11 for controlling the concentration of oxygen is installed in connection with a surging tank 2 of the liquid metal target system, and a liquid metal whose oxygen concentration is lowered is circulated all over a cooling line before the maintenance and inspection work. After radioactive oxides and other substances that adhere and remain inside such equipment as a heat exchanger 4 in the cooling line and inside the piping are removed by being reduced and washed away in the previous process, they are drained to a drain tank 5. The drain tank 5 is located in a place away from other line equipment pipes or is shielded. Therefore, the radioactive oxides and other substances do not remain on the inside surface of the equipment and the piping when such an equipment as the heat exchanger 4 and the piping are maintained and inspected.

4. 发明专利

JPH11173940A METHOD AND DEVICE FOR ACOUSTICALLY DETECTING LEAKAGE 失效
公开(公告)号：JPH11173940A
公开(公告)日：1999-07-02
申请号：JP34526797
申请日：1997-12-15
申请人： HITACHI LTD
发明人： YAMADA IZUMI , OKADA SATOSHI , KASHIWAKURA JUN , ISHIDA TAKAYUKI
IPC分类号： G01M3/24 , G21C17/00 , G21C17/025
摘要： PROBLEM TO BE SOLVED: To improve the operational reliability of a plant by preventing malfunction of an acoustic leakage detector by realizing such a leakage monitoring function that is sensible to the occurrence of bubbles in an SG container without responding to the waveform variation of received acoustic waves caused by the operating condition. SOLUTION: The acoustic leakage detecting device is composed of transmitting sound sensors 11t and 12t and receiving sound sensors 11a, 11b, 12a, and 12b installed to the barrel 7 of an SG container, an acoustic wave generation controller 200, and a leakage detector 300. Thereby, the reliability of the operation, etc., of a plant can be improved because such leakage detection that is sensible to the variation of noise, etc., and to the occurrence of bubbles in the SG container becomes possible.

5. 发明专利

JPH10300887A STEAM GENERATOR FOR FAST BLEEDER REACTOR 失效
公开(公告)号：JPH10300887A
公开(公告)日：1998-11-13
申请号：JP11116397
申请日：1997-04-28
申请人： HITACHI LTD
发明人： SOMA HISASHI , KASHIWAKURA JUN , TAKAKUWA MASAYUKI , KUBO ATSUHIKO
IPC分类号： G21D1/00
摘要： PROBLEM TO BE SOLVED: To suppress the excessive pressure in water leak and urgently drain secondary sodium by providing cover gas spaces so as to cover upper and lower sodium plenums through no piping, and independently controlling the pressures thereof. SOLUTION: An inner tube 22 comprises a steam generator cover gas space 18 covering the upper part of an upper sodium plenum A in which a heat exchanger tube 17 is dipped, and an outer vessel 23 comprises an outer vessel cover gas space 19 covering the upper part of a lower sodium plenum B in which a heat exchanger tube 17 is dipped. The internal pressures of the steam generator cover gas space 18 and the outer vessel cover gas space 19 are independently controlled by a cover gas supplying system 27. When the heat exchanger tube 17 is broken, high-pressure water or steam makes contact with a secondary coolant 6, the internal pressure of the steam generator cover gas space 18 is raised by the reaction of sodium with water, and the secondary coolant 6 is carried from the steam generator 11 to the outer vessel 23 to moderate the pressure rise within the steam generator 11. The secondary coolant 6 around the heat exchanger tube 17 is eliminated, and the propagation of the breakage can be prevented.

6. 发明专利

JPH10153480A ACOUSTIC MONITORING DEVICE 失效
公开(公告)号：JPH10153480A
公开(公告)日：1998-06-09
申请号：JP31333696
申请日：1996-11-25
申请人： HITACHI LTD
发明人： YAMADA IZUMI , OKADA SATOSHI , KASHIWAKURA JUN
IPC分类号： G01H17/00 , G01M3/24
摘要： PROBLEM TO BE SOLVED: To provide a sensor which can be arranged even near a generating source of noise by arranging a plurality of acoustic sensors with directivity, so that they are hardly affected by noise. SOLUTION: An acoustic signal detected by a plurality of acoustic sensors S1-Sn arranged in a place where the noise accompanying the flowing of steam is extremely large is inputted to an acoustic monitor signal processing display part 100. In a signal regulating converting part 110, the acoustic signal is amplified and digitally converted, and then outputted to directive signal processing parts 121, 122. The processing parts 121, 122 have means for imparting a predetermined time delay every acoustic sensor and means for adding the acoustic signal to which the time delay is imparted, and outputs a signal A highly sensitive to the acoustic signal A from direction A and an acoustic signal B highly sensitive to the acoustic signal propagated from direction B. A monitoring signal processing part 130 performs the effective value conversion, frequency analysis and mutual correlation processing of the signals A, B, and displays and records the processing result in an acoustic state display and recording part 140.

7. 发明专利

JPH0377401B2 失效
公开(公告)号：JPH0377401B2
公开(公告)日：1991-12-10
申请号：JP1919384
申请日：1984-02-03
申请人： HITACHI LTD
发明人： KASHIWAKURA JUN , TSUDA KATSU , ABE KOJI
IPC分类号： F22B1/06

8. 发明专利

JPH03110394A HEAT EXCHANGER USING DOUBLE TUBES 失效
公开(公告)号：JPH03110394A
公开(公告)日：1991-05-10
申请号：JP24334889
申请日：1989-09-21
申请人： HITACHI LTD
发明人： KASHIWAKURA JUN , TATE YASUO
IPC分类号： F28F1/00 , F28F11/00
摘要： PURPOSE:To improve heat transfer performance and to early detect a defect by providing a spiral groove at a predetermined angle with respect to either one axial direction of inner periphery of an outer cylinder or outer periphery of an inner tube, reducing the area of the groove in an axial section and reducing a distance between a defect generated at the outer or inner tube and the groove. CONSTITUTION:A double tube 1' is composed of an inner tube 2' and an outer tube 3' to be engaged coaxially with each other, and four grooves 4' are formed spirally at a predetermined angle with respect to the axial direction of the tube 1, on the inner periphery of the tube 3'. In this case, the grooves 4' in the axial section are formed substantially in a semicircular state, and since its area is reduced, the sectional area of the tube 3' for supporting a circumferential load is increased by an inner pressure. Accordingly, its stress can be reduced, and a tubular wall is reduced in thickness. If a defect 26 occurs in the center between the grooves 4', a distance from the groove 4' to the defect 26 becomes a/2costheta. Therefore, ventilation in a gap between the tubes 2' and 3' is improved.

9. 发明专利

JP2003156594A RADIOACTIVE MATERIAL CONTAINING VESSEL CARRIAGE EQUIPMENT, CARRIAGE METHOD AND STORAGE METHOD FOR THE VESSEL 审中-公开
公开(公告)号：JP2003156594A
公开(公告)日：2003-05-30
申请号：JP2001358653
申请日：2001-11-26
申请人： HITACHI LTD
发明人： HOSHIKAWA TADAHIRO , SHIMIZU HITOSHI , IGA KIMINORI , KASHIWAKURA JUN
IPC分类号： G21C19/32 , G21F5/012 , G21F9/36
摘要： PROBLEM TO BE SOLVED: To reduce exposure of workers concerning the handling work of a radioactive material containing vessel in vessel storage facilities. SOLUTION: For a carriage equipment of the radioactive material containing vessel, an air pallet carriage device is used and the handling work is made automatic and remote controlled. By using the air pallet carriage device, the height of the storage facility building is drastically reduced. Simultaneously, by making the handling work automatic and remote controlled, exposure of workers is drastically reduced and operation cost is reduced.

10. 发明专利

JPH09264807A METHOD AND APPARATUS FOR MONITORING OF SOUND 失效
公开(公告)号：JPH09264807A
公开(公告)日：1997-10-07
申请号：JP7565296
申请日：1996-03-29
申请人： HITACHI LTD
发明人： YAMADA IZUMI , OKADA SATOSHI , ISHIDA TAKAYUKI , KASHIWAKURA JUN
IPC分类号： G01N29/00 , G01H3/00 , G01M3/24 , G01N29/20
摘要： PROBLEM TO BE SOLVED: To capture, with high sensitivity, whether a leakage sound is generated or not inside a monitoring region and to discriminate, with a small malfunction, whether a generation sound source exists or not. SOLUTION: The sound-source intensity of signals from a plurality of acoustic sensors 11 which are installed around an SG(steam generator) container shell 7 is computed by a high-speed signal processor 300, and effective-value data on a process signal and on an acoustic signal are computed by a low-speed A/DC (A/D converter.. In a sound detection device 400, the generation of a leakage sound or the like inside the monitoring region of the SG container shell 7 is detected and the position of the leakage sound is located on the basis of the sound-source intensity from the high-speed signal processor 300 and on the basis of the effective-value data on the process signal and on the acoustic signal from the low-speed A/DC. However, when the existence of the generation of the leakage sound or the like is monitored on the basis of the mean value of a sound-source intensity distribution from the high-speed signal processor 300, a sound source can be discriminated precisely even when the peak of the sound-intensity distribution is not clear. The sensitivity of an apparatus is increased, and the reliability of the operation or the like of a plant is enhanced.

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