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1. 发明专利

JPS58215594A Reactor coolant cleanup system 失效
公开(公告)号：JPS58215594A
公开(公告)日：1983-12-15
申请号：JP9768682
申请日：1982-06-09
申请人： Hitachi Ltd , Hitachi Eng Co Ltd
发明人： TONEGAWA KIYOSHI , SATOU TOORU , KUMAGAI MAKOTO
IPC分类号： G21C19/307 , G21C15/18 , G21C19/30
CPC分类号： Y02E30/40

2. 发明专利

JPS59145998A Emergency gas processor 失效
标题翻译：紧急气体处理器
公开(公告)号：JPS59145998A
公开(公告)日：1984-08-21
申请号：JP1876283
申请日：1983-02-09
申请人： Hitachi Ltd , Hitachi Eng Co Ltd
发明人： KUMAGAI MAKOTO , KONNO YASUHIRO , FUKUMOTO TOSHIHIKO
IPC分类号： G21F9/02 , G21F9/00

3. 发明专利

JP2002310333A MAINTENANCE TIMING PREDICTION METHOD FOR VALVE AND ITS DEVICE 失效
公开(公告)号：JP2002310333A
公开(公告)日：2002-10-23
申请号：JP2001117594
申请日：2001-04-17
申请人： HITACHI LTD , HITACHI ENG SERVICE
发明人： TAKESHIMA KIKUO , KOIKE MASAHIRO , KUMAGAI MAKOTO , MATSUNAGA MASAMI
IPC分类号： F16K27/00 , F16J15/00 , F16K37/00
摘要： PROBLEM TO BE SOLVED: To properly set a valve maintenance timing without being bound dominantly by a gasket exchanging cycle. SOLUTION: The distortion of a valve cover 2 subjected to distortion by reaction given from a gasket 6 mounted on a valve is detected by a distortion sensor 4, the bearing pressure of the gasket 6 is found from the detection value by a gasket bearing pressure conversion part 53, a gasket exchanging timing is predicted from the degree of deterioration of the gasket 6 corresponding to the found bearing pressure by a gasket exchanging cycle prediction part, and an inspection timing which may come soon out of the predicted exchanging timing for the gasket and inspection timings for other valve structural parts are found by a valve maintenance timing prediction part 55 and displayed as the next inspection timing on a display part 56.

4. 发明专利

JP2000337525A PILOT Y-TYPE GLOBE VALVE 失效
公开(公告)号：JP2000337525A
公开(公告)日：2000-12-05
申请号：JP15112499
申请日：1999-05-31
申请人： HITACHI LTD
发明人： OGAWA SUKEHIRO , KIYOTOKI YOSHIHISA , KUMAGAI MAKOTO
IPC分类号： F16K1/00 , F16K31/122
摘要： PROBLEM TO BE SOLVED: To provide a structure of pilot Y-type globe valve that reduces pressure loss. SOLUTION: A conventional pilot Y-type globe valve of a flow-to-close system in an open position causes a dead water region near the bottom of its main valve element and hinders pressure recovery about the dead water region, which leads to increased valve pressure loss. The pilot Y-type globe valve proposed has holes 17 passing the side of a main valve element 2 into the hollow thereof. The through holes 17 lead fluid upstream of the valve into the main valve element 2 from which it is guided downstream by a pilot hole 9 passing the bottom of the main valve element 2 into the hollow thereof, which reduces the dead water region and thus the valve pressure loss.

5. 发明专利

JPH0556472B2 失效
公开(公告)号：JPH0556472B2
公开(公告)日：1993-08-19
申请号：JP18704883
申请日：1983-10-07
申请人： HITACHI LTD
发明人： KUMAGAI MAKOTO , KYOTOKI YOSHIHISA , AKITA MINORU
IPC分类号： G21C15/18

6. 发明专利

JPH0587270A VALVE ELEMENT VIBRATION CONTROL STRUCTURE IN Y-GLOBE VALVE 失效
公开(公告)号：JPH0587270A
公开(公告)日：1993-04-06
申请号：JP25085091
申请日：1991-09-30
申请人： HITACHI LTD
发明人： TAKESHIMA KIKUO , KUMAGAI MAKOTO , SAKAMOTO AKIRA
IPC分类号： F16K47/02 , G21D1/00
摘要： PURPOSE:To control the vibration due to a fluid impact by setting a guide, guiding a valve element, down to a wing guide with a widening part, one part is more widened than the other part in a contact range along the outer periphery of this valve element. CONSTITUTION:A wing guide 3 widens a contact range within the extent of a tangent 8 on a peripheral surface between a guide and a valve element 2 at a time when the guide is widened, and a stellite overlay is applied to a surface opposed to the valve element of this widened wing guide 3, thereby eliminating any possible wear. Thus, since a guide surface, existing in the more flowing side than the valve element 2 and guiding a movement of this element 2, is widened along the outer periphery of the valve element 2, an area at a time when a fluid directly collides with the valve element 2 becomes lessened, the magnitude of vibration in the valve element 2 is made smaller. In addition, the stellite overlay is applied to the guide surface at the side of the valve element 2 of the wing guide 3, through which wear or abrasion due to an impact caused by a vibration in the valve element can be almost brought to nothing.

7. 发明专利

JPS6079293A EMERGENCY CORE COOLING SYSTEM 失效
公开(公告)号：JPS6079293A
公开(公告)日：1985-05-07
申请号：JP18704883
申请日：1983-10-07
申请人： HITACHI LTD
发明人： KUMAGAI MAKOTO , KIYOTOKI YOSHIHISA , AKITA MINORU
IPC分类号： G21C15/18

8. 发明专利

JPS57182198A COOLANT CLEANUP FACILITY OF NUCLEAR REACTOR 失效
公开(公告)号：JPS57182198A
公开(公告)日：1982-11-09
申请号：JP6516181
申请日：1981-05-01
申请人： HITACHI LTD
发明人： KUBONIWA TAKAO , KONNO YASUHIRO , KUMAGAI MAKOTO , OOSUMI KATSUMI
IPC分类号： G21D3/08 , G21C19/30 , G21C19/307 , G21D3/14

9. 发明专利

JP2005290529A Valve and its production method, power generation plant using the same, and member for valve 有权
标题翻译：阀门及其生产方法，使用其的发电厂和阀门的成员
公开(公告)号：JP2005290529A
公开(公告)日：2005-10-20
申请号：JP2004111669
申请日：2004-04-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： CHIKAZAKI MITSUO , KIYOTOKI YOSHIHISA , KUMAGAI MAKOTO , FURUSAWA SATOSHI , KUNIYA JIRO , KATO TAKAHIKO
IPC分类号： F16K25/00 , B22F3/15 , B22F3/20 , B22F9/08 , B23K20/00 , B23K101/34 , B23K103/24 , C22C19/00 , C22C38/00 , C22C38/22 , F16K3/12
摘要： PROBLEM TO BE SOLVED: To provide a valve having a higher hardness and higher impact resistance, and its production method, and a power generation plant and members for the valve using the same.
SOLUTION: The valve has a valve body and a valve box and one kind selected from a cobalt-based alloy member with a chromium carbide dispersed into a base, a nickel-based alloy member, and an iron-based alloy member is formed on valve seat surfaces sliding each other. The valve member is formed by hydrostatic pressurization sintering or hot extrusion sintering and is diffusion-joined to the valve seat.
COPYRIGHT: (C)2006,JPO&NCIPI

10. 发明专利

JP2004077408A Valve for light-water reactor 审中-公开
公开(公告)号：JP2004077408A
公开(公告)日：2004-03-11
申请号：JP2002241536
申请日：2002-08-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TAKESHIMA KIKUO , KUMAGAI MAKOTO , CHIKAZAKI MITSUO , CHIBA YOSHITERU
IPC分类号： G21D1/00 , F16K3/12
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide a valve for a light-water reactor which has good corrosion and abrasion resistance without increasing the cost as in a conventional ceramic coating treatment.
SOLUTION: The purpose mentioned above is achieved by obtaining the valve for the light-water reactor manufactured by melting and cooling a surface padding section irradiated with a laser beam after applying a surface hardening padding material to a valve box of the valve for the light-water reactor and a sheet of a valve body and irradiating the surfaces of at least one of the surface hardening padding materials applied to the valve box and the sheet with the laser beam.
COPYRIGHT: (C)2004,JPO

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