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11. 发明专利

JPH0659091A TEMPERATURE CONTROL TYPE MATERIAL IRRADIATION DEVICE 失效
公开(公告)号：JPH0659091A
公开(公告)日：1994-03-04
申请号：JP21033992
申请日：1992-08-06
申请人： HITACHI LTD
发明人： YAMASHITA YOSHIHIRO , MADOKORO MANABU
IPC分类号： G21C23/00
摘要： PURPOSE:To provide a temperature control type material irradiation device to maintain the radiation temperature of an irradiation sample set in a reactor core at a constant level at the time of variation of reactor core output. CONSTITUTION:This is constituted of an inner cylindrical pipe 6 furnished with a piping to let sodium flow in and out of the piping by way holding an irradiation sample 7 and an outer cylindrical pipe 4 furnished with a piping storing the inner cylindrical pipe 6 with a gas gap 5 and to let cooling gas filled in the gas gap 5 flow in and out of the piping, and the coefficient of thermal expansion of the material of the inner cylindrical pipe 6 is made larger than that of the outer cylindrical pipe 4. As temperature change of the gas gap 5 controls refrigeration and compensates temperature change of the irradiation sample 7 at the time of variation of reactor core output, it is possible to maintain the temperature of a constantly irradiated sample to a roughly constant level without any time lag.

12. 发明专利

JPS61117356A Lining structure and method of building concrete 失效
标题翻译：建筑混凝土的内部结构和方法
公开(公告)号：JPS61117356A
公开(公告)日：1986-06-04
申请号：JP23662084
申请日：1984-11-12
申请人： Hitachi Ltd
发明人： YAMASHITA YOSHIHIRO , NAKAGAWA YUKIO , ITO TADASHI
IPC分类号： G21C13/00 , E04B1/76 , E04F13/08 , E04F13/21
CPC分类号： Y02A30/247 , Y02E30/40

13. 发明专利

JP2004333225A Tank corrosion diagnostic method 审中-公开
标题翻译：油罐腐蚀诊断方法
公开(公告)号：JP2004333225A
公开(公告)日：2004-11-25
申请号：JP2003127259
申请日：2003-05-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMASHITA YOSHIHIRO
IPC分类号： G01N29/14 , G01N17/00
摘要： PROBLEM TO BE SOLVED: To provide a tank corrosion diagnostic method for retaining reliability without affecting the diagnosis of corrosion even if sludge precipitates.
SOLUTION: In the corrosion diagnostic method in a tank for storing liquid W by coating the inner surface of the tank 1 made of steel consisting of a cylindrical drum section 1A and a disc-like bottom section 1B before setting it longitudinally, vibration meters 2A, 2B, 2C are provided on the outer surface of the bottom section 1B, Lamb waves 7 that are generated in rust 4 and are propagated to the bottom surface 1B are detected to diagnose corrosion. Even if sludge S precipitates from the liquid W and is deposited at the bottom section 1B, corrosion and leakage can be reliably detected for diagnosis.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供罐腐蚀诊断方法，用于保持可靠性，而不影响腐蚀的诊断，即使污泥沉淀。解决方案：在通过在纵向安装圆柱形鼓部分1A和盘状底部部分1B之前涂覆由钢制成的钢1的内表面储存液体W的罐中的腐蚀诊断方法中，振动仪表2A，2B，2C设置在底部1B的外表面上，检测在锈蚀4中产生并传播到底面1B的兰姆波7以诊断腐蚀。即使污泥S从液体W析出并沉积在底部1B，也可以可靠地检测腐蚀和泄漏以进行诊断。版权所有（C）2005，JPO＆NCIPI

14. 发明专利

JP2000280087A DEVICE AND METHOD OF UNDERWATER LASER WELDING 失效
公开(公告)号：JP2000280087A
公开(公告)日：2000-10-10
申请号：JP8780599
申请日：1999-03-30
申请人： HITACHI LTD
发明人： YAMASHITA YOSHIHIRO , KATO TAKAHIKO , KOSHIISHI MASATO
IPC分类号： B23K26/12 , G21C19/02
摘要： PROBLEM TO BE SOLVED: To form a dry spot space with not only gas but also water for enabling laser welding in water by spraying water to form a water curtain from a circumference of a gas shield nozzle for spraying shield gas, which is coaxial with a laser light to be radiated to a welding part. SOLUTION: At a tip of a laser torch, a gas shield nozzle and a water shield nozzle are arranged coaxially with an optical axis of a laser light 8. Shield gas injected from a gas injection port 7 is emitted to a welding part 9 at the same time when the laser light 8 is radiated. Simultaneously, an annular gap between a gas shield nozzle outer wall and a water shield nozzle inner wall is covered with a water curtain 10 formed with the water injected from a water injection port 6. A gas space of a conical dry spot is formed by a membrane force of the water curtain 10 and shield gas pressure so as to cover the welding part. By the gas space, laser welding can be done in the water under the condition equivalent to that in the atmosphere.

15. 发明专利

JPH0330661B2 失效
公开(公告)号：JPH0330661B2
公开(公告)日：1991-05-01
申请号：JP12557284
申请日：1984-06-19
申请人： HITACHI LTD
发明人： YAMASHITA YOSHIHIRO , NAKAGAWA YUKIO , ITO TADASHI
IPC分类号： E04B1/41 , E04B1/58 , E04H7/18 , G21C13/00

16. 发明专利

JPS61164987A LINER SUPPORT STRUCTURE 失效
公开(公告)号：JPS61164987A
公开(公告)日：1986-07-25
申请号：JP27970884
申请日：1984-12-29
申请人： HITACHI LTD
发明人： YAMASHITA YOSHIHIRO , NAKAGAWA YUKIO , ITO TADASHI
IPC分类号： G21D1/02 , B65D90/04 , E04F13/08 , G21D1/00

17. 发明专利

JPS6054724A WASTE GAS DEHUMIDIFICATION TOWER 失效
公开(公告)号：JPS6054724A
公开(公告)日：1985-03-29
申请号：JP16312483
申请日：1983-09-07
申请人： HITACHI LTD
发明人： YAMASHITA YOSHIHIRO , SEKI KATSUZOU , SAKATA YUUJI
IPC分类号： B01D53/26
摘要： PURPOSE:To make the structure simpler by eliminating baffles and to improve maintenance by remodelling a dehumidification tower for waste gas to a structure wherein a discharge port of dehumidifying agent is eliminated and charge and discharge of dehumidifying agent are executed through a charging port of the dehumidifying agent. CONSTITUTION:An outlet nozzle 2 for waste gas and a charging port 3 for the dehumidifying agent are provided to the top of a main body of a dehumidification tower for waste gas having a vertical cylindrical structure, and an inlet nozzle 1 is provided to the bottom of the main body. Thus, baffles and discharge port of the dehumidifying agent are eliminated. In the stage of exchanging the dehumidifying agent, a cover 5 of the charging port 3 of the dehumidifying agent is removed and the dehumidifying agent is sucked out by using a vacuum sucking machine, and fresh dehumidifying agent is charged. By the use of the dehumidification tower for waste gas, scattering of dehumidifying agent is retarded and operability is improved.

18. 发明专利

JPS5860291A REACTOR CONTAINER 失效
公开(公告)号：JPS5860291A
公开(公告)日：1983-04-09
申请号：JP15874681
申请日：1981-10-07
申请人： HITACHI LTD
发明人： YAMASHITA YOSHIHIRO , OYAMADA OSAMU , FURUKAWA HIDEYASU , UOZUMI HIROTO
IPC分类号： G21C13/00 , G21C13/02

19. 发明专利

JPH05341089A 失效
公开(公告)号：JPH05341089A
公开(公告)日：1993-12-24
申请号：JP14928892
申请日：1992-06-09
申请人： HITACHI LTD
发明人： YAMASHITA YOSHIHIRO , MADOKORO MANABU , SATO HARUO
IPC分类号： G21C23/00
摘要： PURPOSE:To provide a temp. controlled material irradiation device, with which the soundness of the structure of an inner cylinder tube is well secured even though its plate thickness is small and temp. control of the be can be done smoothly. CONSTITUTION:In connection with an inner cylinder tube 6, a sodium flowout pipe 9 is installed through which sodium 12 in the inner cylinder tube 6 flows out from its over-part, and this sodium flowout pipe 9 is extended to inside of the inner cylinder tube 6 to form a sodium flowout pipe extension part 13 so that a sodium liquid surface 12 is formed within the tube 6. A gas storage 14 for inert gas is provided in the space bounded by the sodium liquid surface 12 and the inner wall surface of the upper part of the inner cylinder tube 6.

20. 发明专利

JPS615138A INSTALLATION STRUCTURE OF EMBEDDING METAL FITTINGS 失效
公开(公告)号：JPS615138A
公开(公告)日：1986-01-10
申请号：JP12557284
申请日：1984-06-19
申请人： HITACHI LTD
发明人： YAMASHITA YOSHIHIRO , NAKAGAWA YUKIO , ITOU TADASHI
IPC分类号： E04B1/41 , E04B1/58 , E04H7/18 , G21C13/00

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