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11. 发明专利

JPH06201885A OPERATING CONDITION MONITORING SYSTEM OF PLANT 失效
公开(公告)号：JPH06201885A
公开(公告)日：1994-07-22
申请号：JP16087193
申请日：1993-06-30
申请人： HITACHI LTD
发明人： SAKAI MASANORI , MABUCHI KATSUMI , ARATO TOSHIAKI , TAKAHASHI TAKUYA , IZUMITANI MASAKIYO , MASAOKA ISAO , KOJIMA YOSHIYUKI , INAGAKI MASATOSHI , OSUMI KATSUMI , HAYASHI MAKOTO , SATO FUMIO , SUWA MASATERU , AKAHORI KIMIHIKO , BABA KENJI , YAMAUCHI HIROSHI , ONAKA NORIYUKI
IPC分类号： G01N17/02 , G01N27/26 , G01N27/27 , G01N27/30 , G01N27/403 , G21C17/02 , G21D3/08
摘要： PURPOSE:To precisely extract water quality information of high temperature water indispensable to operation condition monitoring of a nuclear power plant, a thermal power plant and the like by using a specific electrochemical reference electrode (ECP sensor) as a water quality sensor. CONSTITUTION:There is an EPC sensor, viz. a silver/silver halide reference electrode, on which alumina or zirconia 25 and silver halide 23 adhere to both the faces of a silver wire 26 and alumina coating 22, 24 is formed with a cataphoresis method thereon. A sensor part made as above-mentioned is lapped and protected with a guard 21 in which a slender hole is provided in the lower part thereof, an end of the silver wire 26 is electrically connected to a lead wire 31 and an upper part thereof is sealed with a glass 27. In addition, a space between the guard 21 and the lead wire 31 is filled with magnesia and an end part thereof is sealed with another glass 30. The sensor is fixed on a fixed member 29 of an instrumentation pipe of a nuclear reactor and the like and, because high temperature water of a plant is not directly brought into contact with a solid electrolyte (silver halide), its life is very long and reliability of data can be heightened.

12. 发明专利

JPH04236331A LIQUID LEVEL METER 失效
公开(公告)号：JPH04236331A
公开(公告)日：1992-08-25
申请号：JP423991
申请日：1991-01-18
申请人： HITACHI LTD
发明人： TAKASE IWAO , INAGAKI MASATOSHI , KANNO MASAYOSHI , IZAKI NAOYUKI , ONAKA NORIYUKI
IPC分类号： G01F1/52 , G01F23/24
摘要： PURPOSE:To provide a liquid level meter which directly measures the liquid level in severe circumstances of high-temperature and high-pressure water and steam while a plurality of electrode rods are inserted into a pressure container. CONSTITUTION:As an electrode a fine wire of zirconium alloy is used. The surface of a conductive part thereof is coated with an oxide film for electrically insulation. Platium, gold or silver which is non-oxidizing is pressure-welded to the surface of an end part of an electrode rod where the electricity concentrates. In the liquid level meter thus obtained, a measuring electrode, a reference electrode and a comparison electrode which are formed into one body serving both as an electric conductor and as an electric insulator are arranged in a pressure container. Sine waves of 1kHz or so are applied to the meter in a manner not to influence a product and a test body. The change of the electric resistance when the measuring electrode comes in touch with the liquid is detected as the change of the liquid level.

13. 发明专利

JPH0422982B2 失效
公开(公告)号：JPH0422982B2
公开(公告)日：1992-04-21
申请号：JP2161186
申请日：1986-02-03
申请人： HITACHI LTD
发明人： INAGAKI MASATOSHI , TAKASE IWAO , YOSHIDA SUMI , MATSUMOTO TOSHIHIRO
IPC分类号： C22F1/18 , C22C16/00 , G21C3/30

14. 发明专利

JPH0375626B2 失效
公开(公告)号：JPH0375626B2
公开(公告)日：1991-12-02
申请号：JP20031282
申请日：1982-11-17
申请人： HITACHI LTD
发明人： UMEHARA HAJIME , NAKAJIMA JUNJIRO , INAGAKI MASATOSHI
IPC分类号： G21C3/06 , C22C16/00 , C22F1/18

15. 发明专利

JPH01116057A MANUFACTURE OF NUCLEAR REACTOR SPACER 失效
公开(公告)号：JPH01116057A
公开(公告)日：1989-05-09
申请号：JP27300887
申请日：1987-10-30
申请人： HITACHI LTD
发明人： TAKASE IWAO , INAGAKI MASATOSHI , KANNO MASAYOSHI , KUNIYA JIRO , YASUDA TETSUO
IPC分类号： C22C16/00 , C22F1/00 , C22F1/18
摘要： PURPOSE:To easily manufacture a spacer having high corrosion resistance and high strength by subjecting an alloy having a specific composition consisting of Nb, Sn, Mo, and Zr to hot rolling, cold working, annealing, (alpha+beta) hardening, cold working, welding, and final heat treatment in succession. CONSTITUTION:A nuclear reactor fuel assembly is formed by placing plural fuel rods into a cylinder and then welding a spacer dividing the fuel rods in the cylinder to the cylinder. The above spacer is composed of an alloy having a composition consisting of, by weight, 0.5-2.5% Nb, 0.5-2.0% Sn, 0.1-1.0% Mo, and the balance Zr. Further, at the time of manufacturing the above nuclear reactor spacer, the above Zr alloy is subjected to solution heat treatment from beta-temp. and then hot-rolled at a temp. in the range of 600-750 deg.C. The hot-rolled plate is subjected to alternate repetition of cold working and annealing at 550-650 deg.C. Subsequently, the worked material is subjected to (alpha+beta) hardening treatment at 790-870 deg.C. Then, forming is applied to the above treated material by means of final cold rolling. After the welding of the resulting member is carried out, the final heat treatment is applied to the above at 400-650 deg.C, by which the spacer can be formed.

16. 发明专利

JPS63210694A FUEL AGGREGATE FOR NUCLEAR REACTOR 失效
公开(公告)号：JPS63210694A
公开(公告)日：1988-09-01
申请号：JP4263487
申请日：1987-02-27
申请人： HITACHI LTD
发明人： TAKASE IWAO , INAGAKI MASATOSHI , KANNO MASAYOSHI , KUNIYA JIRO , YOSHIDA SUMI , MASAOKA ISAO , YASUDA TETSUO
IPC分类号： G21C3/30 , G21C3/34

17. 发明专利

JPS6360248A HIGHLY CORROSION-RESISTANT ZIRCONIUM ALLOY MEMBER 失效
公开(公告)号：JPS6360248A
公开(公告)日：1988-03-16
申请号：JP20139686
申请日：1986-08-29
申请人： HITACHI LTD
发明人： TAKASE IWAO , INAGAKI MASATOSHI , KANNO MASAYOSHI , KUNIYA JIRO , YOSHIDA SUMI , MASAOKA ISAO , YASUDA TETSUO
IPC分类号： C22C16/00 , C22F1/00 , C22F1/18 , G21C3/07 , G21C3/30
摘要： PURPOSE:To obtain a highly corrosion-resistant Zr alloy member free from deterioration in corrosion resistance due to welding and having high strength, by specifying a composition consisting of Nb, Sn, Mo, and Zr. CONSTITUTION:The highly corrosion-resistant Zr alloy member has a composition consisting of, by weight, 1.0-

18. 发明专利

JPS62182258A MANUFACTURE OF HIGH-DUCTILITY AND HIGHLY CORROSION-RESISTANT ZIRCONIUM-BASE ALLOY MEMBER AND THE MEMBER 失效
公开(公告)号：JPS62182258A
公开(公告)日：1987-08-10
申请号：JP2383586
申请日：1986-02-07
申请人： HITACHI LTD
发明人： YOSHIDA SUMI , TAKASE IWAO , INAGAKI MASATOSHI , KUNIYA JIRO , MATSUMOTO TOSHIHIRO
IPC分类号： C22F1/18 , C22F1/00
摘要： PURPOSE:To manufacture a Zr-base alloy member having high ductility and high corrosion resistance, by subjecting a Zr-base alloy containing Nb, Sn, Fe, and 0 to specific solution heat treatment, to cold working, and to specific aging treatment to form a specific metallic structure. CONSTITUTION:The Zr-base alloy material containing, by weight, 0.2-5.0% Nb, 0.5-3% Sn, 0.1-2.0% Fe, and 500-2,000ppm O is subjected to solution heat treatment by rapidly cooling from the temp. range of an (alpha+beta)- or alpha-phase. The material then is subjected to cold working at a draft of at least >=15% and to aging treatment at and above the recrystallization temp. in the alpha-phase temp. range. In this way, the material is formed into the metallic structure consisting of granular recrystallization structure and fine precipitates and free from residual structure of martensitic or Widmanstaetten state, so that Zr-base alloy member free of nodular corrosion and having high strength and high ductility can be obtained.

19. 发明专利

JPS6145699B2 失效
公开(公告)号：JPS6145699B2
公开(公告)日：1986-10-09
申请号：JP11973981
申请日：1981-07-29
申请人： HITACHI LTD
发明人： YOSHIDA SUMI , MAKI HIDEO , UMEHARA HAJIME , YASUDA TETSUO , MASAOKA ISAO , TAKASE IWAO , INAGAKI MASATOSHI , JINBO RYUTARO , KUNYA KEIICHI
IPC分类号： G21C3/00 , C22F1/18

20. 发明专利

JPS6059983B2 失效
公开(公告)号：JPS6059983B2
公开(公告)日：1985-12-27
申请号：JP3714081
申请日：1981-03-13
申请人： HITACHI LTD
发明人： INAGAKI MASATOSHI , TAKAHASHI KAZUYA , JINBO RYUTARO , SUZUMURA TAKESHI , SHINHO KATSUTOSHI , SAITO SOZO
IPC分类号： G21C3/00 , C22F1/18

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