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1. 发明专利

DE3716565A1 未知
公开(公告)号：DE3716565A1
公开(公告)日：1987-11-26
申请号：DE3716565
申请日：1987-05-18
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SAKURAI MIKIO , HAYASHI TSUTOMU , IZUMI MASAYUKI , SASAKI HIROSHI , SATHO THORU , OWADA KAZUO
IPC分类号： B08B3/10 , G21F9/00 , G21F9/28 , B08B3/00

2. 发明专利

JPH08278386A REACTOR COOLING SYSTEM OPERATION METHOD AND REACTOR COOLING SYSTEM EQUIPMENT 失效
公开(公告)号：JPH08278386A
公开(公告)日：1996-10-22
申请号：JP8113895
申请日：1995-04-06
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： OWADA KAZUO , OKURA MINORU
IPC分类号： G21C9/004 , G21C15/18
摘要： PURPOSE: To provide a reactor cooling system equipment of reactor power plant which can stop a reactor to cold state with superiority in practice and operation without adding any special devices even in the case that the cooling system of ordinary system design of reactor power plant fails the function in the event of an accident, and strengthen the function of the reactor power plant. CONSTITUTION: Switch valves 9, 101, 111 and piping 100 and 110 are provided so that reactor water passes through the heat exchanger 15 of a reactor containment cooling system in the case a cooling system 8 of a heat exchanger of reactor trip cooling system fails its function.

3. 发明专利

JPS6141998A Condensate storage facility 失效
标题翻译：冷藏存储设施
公开(公告)号：JPS6141998A
公开(公告)日：1986-02-28
申请号：JP16294884
申请日：1984-08-03
申请人： Hitachi Ltd , Hitachi Eng Co Ltd
发明人： OWADA KAZUO , IZUMI MASAYUKI
IPC分类号： G21F9/04 , G21C15/18 , G21D1/00 , G21F9/06 , G21F9/22
CPC分类号： Y02E30/40

4. 发明专利

JPH1194985A REACTOR PURIFICATION EQUIPMENT 失效
公开(公告)号：JPH1194985A
公开(公告)日：1999-04-09
申请号：JP25643597
申请日：1997-09-22
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： FUJITA YOSHIO , OWADA KAZUO , SASAKI HIROSHI , OKURA MINORU
IPC分类号： G21D3/00
摘要： PROBLEM TO BE SOLVED: To enable remote control of water-passing/stopping of a bottom drain line in accordance with plant operation by placing the bottom line with a remote control valve and a remote control valve bypass line and by enabling opening and closing by remote control. SOLUTION: A bottom drain line 2 continuously purifies reactor water by removing soluble and insoluble impurity out of the bottom of a reactor pressure vessel 1. A remote control valve 4 passes and terminates water from the bottom drain line 2. A remote control valve front valve 5 and a remote control valve rear valve 6 isolate the remote control valve 4 in repairing and inspecting the remote control valve 4. A remote control valve bypass line 8 continuously passes water in repairing and inspecting the remote control valve 4. A control device 9 remotely operates a remote control valve 7 and the remote control valve 4. By this, passing/stopping of water in the bottom drain line in accordance with plant operation state is made possible.

5. 发明专利

JPH09230085A NUCLEAR REACTOR COOLANT PRESSURE BOUNDARY HEALTH CONFIRMING TEST METHOD AND HEATING AND PRESSURIZING SYSTEM EQUIPMENT FOR THE TEST 失效
公开(公告)号：JPH09230085A
公开(公告)日：1997-09-05
申请号：JP3928696
申请日：1996-02-27
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： WATABE KENTARO , OWADA KAZUO , WADA TOMOHIRO
IPC分类号： G21C17/003 , G21C17/00 , G21C17/02
摘要： PROBLEM TO BE SOLVED: To enable an efficient test by injecting heated reactor water into a water supply line through a communicating line and an outside non-return valve, and putting pressurized pressure into the water supply line through a communicating line and an outside nonreturn valve to humidify and pressurize all the corners. SOLUTION: There are provided with a main steam piping side communicating line 102 communicated from a discharge part of a residual heat removing pump 5 operated for circulating and heating holding water in a nuclear reactor pressure container to the main steam drain piping drain line 20 when performing pressure resisting leakage test of a nuclear reactor coolant pressure boundary, a water supply line side connecting line 101 connected from the line 102 to a water supply system nuclear reactor storing receptacle outside nonreturn valve drain line 34 and a switching valve 104, whereby the main steam line 11 and the water supply line 30 in a pressure resisting leakage test for a nuclear reactor coolant pressure boundary can be heated efficiently and further pressurization from a water supply system unclear reactor storing receptacle inside non-return valve to the outside non-return valve can be performed efficiently.

6. 发明专利

JP2002257972A METHOD AND SYSTEM FOR OPERATING NUCLEAR REACTOR AUXILIARY MACHINE COOLING SYSTEM 失效
公开(公告)号：JP2002257972A
公开(公告)日：2002-09-11
申请号：JP2001056309
申请日：2001-03-01
申请人： HITACHI LTD , HITACHI ENG SERVICE , HITACHI ENG CO LTD , HITACHI IBARAKI BUSINESS ENGIN
发明人： KAWASAKI TAKASHI , OKURA MINORU , KUSANO HIROAKI , KAMITSUMA YUJI , OWADA KAZUO , MIYAGAWA TAKENAO
IPC分类号： G21C15/18 , G21D1/00
摘要： PROBLEM TO BE SOLVED: To provide a method and system for cooling operation of an auxiliary machines or the like by switching to cooling by a refrigerator during the maintenance and inspection time of a seawater cooling system to solve such problems that an auxiliary machine cooling seawater system can not be stopped for a long period of time even when a nuclear reactor is in periodic inspection because of its function and a system construction and influence on the process of an entire periodic inspection in maintenance operation and implementation of a remodeling construction or the like of a seawater pipe becomes very significant. SOLUTION: In cooling the auxiliary machines or the like through a heat exchanger by taking cooling water for a nuclear reactor auxiliary machine or the like from seawater, cooling by the seawater of the auxiliary machines or the like are stopped, the seawater cooling system is isolated by an isolation valve, the output of the refrigerator is connected to a primary side of the heat exchanger, and the auxiliary machines or the like are cooled by the refrigerator.

7. 发明专利

JPS61290395A DRAIN SYSTEM IN HOUSING 失效
公开(公告)号：JPS61290395A
公开(公告)日：1986-12-20
申请号：JP13190785
申请日：1985-06-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： OWADA KAZUO , IZUMI MASAYUKI
IPC分类号： G21D1/00

8. 发明专利

JPS62269096A DECONTAMINATION METHOD 失效
公开(公告)号：JPS62269096A
公开(公告)日：1987-11-21
申请号：JP11262886
申请日：1986-05-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： SAKURAI MIKIO , HAYASHI TSUTOMU , IZUMI MASAYUKI , SASAKI HIROSHI , SATO TORU , OWADA KAZUO
IPC分类号： B08B3/10 , G21F9/00 , G21F9/28

9. 发明专利

JP2007071800A Boiling water type nuclear power generation plant and its piping cleaning method 审中-公开
标题翻译：锅炉水型核能发电厂及其管道清洗方法
公开(公告)号：JP2007071800A
公开(公告)日：2007-03-22
申请号：JP2005261499
申请日：2005-09-09
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： OWADA KAZUO , AIZAWA MOTOHIRO
IPC分类号： G21C17/00 , G21C19/307
摘要： PROBLEM TO BE SOLVED: To provide a method for cleaning stagnant water in an emergency core cooling water system of a nuclear power plant.
SOLUTION: An equalizing valve 19 is connected with an injection check valve 14 of the emergency core cooling system injection pipe 12 and a pipe for cleaning 101 is branched between upper and lower two step drain valves 21 provided to the drain pipe 20 connected with the equalizing pipe 18 of the equalizing valve 19 to connect to a reactor coolant purification system suction pipe 31 in the constitution. In regular inspection of the nuclear power plant, water in the emergency core cooling system injection pipe 12 is passed in the equalizing pipe 18, the drain pipe 20 and the pipe for cleaning 101 in turn together with reactor water with a reactor coolant cleaning system pump 32 by opening the equalizing valve 19. Thus, water is purified with a reactor coolant purification system equipment 33 and is returned to the reactor pressure vessel 1 by way of a reactor water supply system pipe 34.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种清洁核电站应急核心冷却水系统中的停滞水的方法。解决方案：平衡阀19与紧急芯冷却系统喷射管12的喷射止回阀14连接，清洗管101在分别连接到排水管20连接的上下两级排水阀21之间分支均压阀19的均压管18连接到反应堆冷却剂净化系统吸入管31。在定期检查核电站时，应急核心冷却系统注入管12中的水通过反应堆冷却剂清洁系统泵，在均压管18，排水管20和清洁管道101中与反应器水一起通过因此，用反应堆冷却剂净化系统设备33净化水，并通过反应器供水系统管34将其返回到反应堆压力容器1.版权所有（C）2007 ，JPO＆INPIT

10. 发明专利

JP2007139560A Boiling water reactor facility 审中-公开
标题翻译：锅炉水反应器设备
公开(公告)号：JP2007139560A
公开(公告)日：2007-06-07
申请号：JP2005333110
申请日：2005-11-17
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KAWAI HIROKI , OWADA KAZUO
IPC分类号： G21C15/18 , G21C9/004 , G21C19/307
CPC分类号： Y02E30/31
摘要： PROBLEM TO BE SOLVED: To provide boiling water reactor facilities which do not clog piping for sucking cooling water in an emergency core cooling system.
SOLUTION: In this invention, a clogging avoidance means (18) is mounted on an opening 10M of the piping 10 for sucking the emergency core cooling system 7. Such an installation of the clogging avoidance means (18) refrains foreign matters from fully or partially clogging the opening 10M of the suction piping 10 even if a worker were to drop the foreign matter. Consequently, the cooling water will be supplied smoothly to a pressure vessel 1 even in case of an emergency.
COPYRIGHT: (C)2007,JPO&INPIT

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