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1. 发明专利

AU2003203993A1 Medical particle irradiation apparatus 未知
公开(公告)号：AU2003203993A1
公开(公告)日：2004-04-22
申请号：AU2003203993
申请日：2003-05-02
申请人： HITACHI SETSUBI ENGINEERING CO LTD , HITACHI LTD
发明人： YAMASHITA TSUTOMU , AKIYAMA HIROSHI , SAGAWA WATARU , ASANO HIDEHITO , MURAMATSU YUTAKA
IPC分类号： G21K5/04 , A61N5/01 , A61N5/10 , G21K5/10 , A61N5/00
摘要： The apparatus has a rotating gantry with an irradiation unit emitting particle beams. An anti-corotation unit disposed on the gantry is in contact with two frames (15, 16) to prevent the frame (15) from rotating together with the gantry. A moving floor is located between the frames to engage with the frames in a manner to move freely such that its bottom is leveled. An independent claim is also included for an irradiation room for particle beam therapy.

2. 发明专利

DE60307564D1 未知
公开(公告)号：DE60307564D1
公开(公告)日：2006-09-28
申请号：DE60307564
申请日：2003-04-30
申请人： HITACHI LTD , HITACHI SETSUBI ENG KK
发明人： MURAMATSU YUTAKA , ASANO HIDEHITO , SAGAWA WATARU , AKIYAMA HIROSHI , YAMASHITA TSUTOMU
IPC分类号： A61N5/10 , G21K5/04 , A61N5/01 , G21K5/10
摘要： The apparatus has a rotating gantry with an irradiation unit emitting particle beams. An anti-corotation unit disposed on the gantry is in contact with two frames (15, 16) to prevent the frame (15) from rotating together with the gantry. A moving floor is located between the frames to engage with the frames in a manner to move freely such that its bottom is leveled. An independent claim is also included for an irradiation room for particle beam therapy.

3. 发明专利

DE60307564T2 未知
公开(公告)号：DE60307564T2
公开(公告)日：2007-08-09
申请号：DE60307564
申请日：2003-04-30
申请人： HITACHI LTD , HITACHI SETSUBI ENG KK
发明人： MURAMATSU YUTAKA , ASANO HIDEHITO , SAGAWA WATARU , AKIYAMA HIROSHI , YAMASHITA TSUTOMU
IPC分类号： A61N5/10 , G21K5/04 , A61N5/01 , G21K5/10
摘要： The apparatus has a rotating gantry with an irradiation unit emitting particle beams. An anti-corotation unit disposed on the gantry is in contact with two frames (15, 16) to prevent the frame (15) from rotating together with the gantry. A moving floor is located between the frames to engage with the frames in a manner to move freely such that its bottom is leveled. An independent claim is also included for an irradiation room for particle beam therapy.

4. 发明专利

JP2002311195A CARRYING METHOD FOR REACTOR PRESSURE VESSEL 审中-公开
公开(公告)号：JP2002311195A
公开(公告)日：2002-10-23
申请号：JP2002100311
申请日：2002-04-02
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： AOKI MASATAKA , NEYA TAKEO , YONEMURA HIDEO , SAGAWA WATARU , HOSOYA KIYOKAZU , KUBO MASAO
IPC分类号： G21F3/00 , G21F9/30
摘要： PROBLEM TO BE SOLVED: To provide a carrying method for a reactor pressure vessel capable of exchanging the reactor pressure vessel including attachment apparatus in and out a core without removing the γ-shield of a reactor containment. SOLUTION: By lifting up the reactor pressure vessel 1, a shield body 57 different from the γ-shield 17 is attached to the reactor pressure vessel 1 containing in-core structure 2, CRD housing 23, etc., in a reactor building 31. The reactor pressure vessel 1 attached by the shield body 57 is carried out of the reactor building 31.

5. 发明专利

JPH09145882A REACTOR PRESSURE VESSEL REPLACING METHOD AND EQUIPMENT AT THE TIME OF REPLACING REACTOR PRESSURE VESSEL 失效
公开(公告)号：JPH09145882A
公开(公告)日：1997-06-06
申请号：JP30861795
申请日：1995-11-28
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： AOKI MASATAKA , NEYA TAKEO , YONEMURA HIDEO , SAGAWA WATARU , HOSOYA KIYOKAZU , KUBO MASAO
IPC分类号： G21C11/02 , G21C13/00 , G21F9/30
摘要： PROBLEM TO BE SOLVED: To provide a reactor pressure vessel replacing method that can replace a reactor pressure vessel including reactor internal-external auxiliary equipment, without removing a radiation shielding body of a reactor containment, and provide equipment at the time of replacing the reactor pressure vessel. SOLUTION: Without removing a radiation shielding body 17 disposed in cylindrical shape around a reactor pressure vessel 1, the reactor pressure vessel 1 including reactor internal-external auxiliary equipment (a reactor internal structure 2, a control rod driving device, a housing 23, and the like) is carried outside of a reactor building as it is in the installed form of the reactor pressure vessel 1 including the reactor internal-external auxiliary equipment, and a new reactor pressure vessel 1 including new reactor internal-external auxiliary equipment is carried into the reactor building as it is in the installed form before carrying out, without removing the radiation shielding body 17.

6. 发明专利

JPH05339705A 失效
公开(公告)号：JPH05339705A
公开(公告)日：1993-12-21
申请号：JP14594192
申请日：1992-06-05
申请人： HITACHI LTD
发明人： WATANABE ATSUSHI , IBE HIDEFUMI , SAGAWA WATARU
IPC分类号： C23C14/16 , C23C14/22 , C23C14/32 , C23F15/00
摘要： PURPOSE:To secure the soundness of a metallic member, especially an atomic reactor structural member, and to prolong the service life of the member by easing the corrosion environment of the crevice of a metallic member. CONSTITUTION:The crevice corrosion rate of a metallic member largely depends on the concn. of an oxidizing agent inside and outside the crevice. Oxygen and hydrogen peroxide act as the main oxidizing agents in the atomic reactor. The metal ion, especially hexavalent Cr ion and hexavalent or heptavalent Mn ion, eluted from the base material of a metallic member has a strong oxidizing power and promotes the corrosion. The trivalent Cr ion or Mn ion is easily oxidized to the hexavalent or heptavalent ion, and hence the environment in the crevice is further made severe. Accordingly, a material capable of reducing Cr ion or Mn ion such as Pt and Pd is previously incorporated into the surface layer of the base material of the metallic member with the crevice surrounded by a corrosive environment. Consequently, the concn. of the Cr or Mn ion as the main oxidizing agent in the crevice is reduced, and the crevice corrosion of the metallic member is suppressed or prevented.

7. 发明专利

JPH04285894A STRUCTURE OF IN-REACTOR RECIRCULATION PUMP NOZZLE 失效
公开(公告)号：JPH04285894A
公开(公告)日：1992-10-09
申请号：JP4933591
申请日：1991-03-14
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： KONNO MASANOBU , MATSUMURA SEIICHI , IZUMIYAMA AKIMASA , SAGAWA WATARU , UOZUMI HIKITO , HARADA KEIZO
IPC分类号： G21C15/243 , G21C17/003
摘要： PURPOSE:To obtain an in-reactor recirculation pump nozzle structure in which the uranami shape of welded part and welded condition at an installment welding part of the internal recirculation pump casing directly connected to the bottom part of nuclear reactor pressure vessel, can be confirmed, and in which maintenance work thereof, processing and confirmation of the processing condition thereof, and access from outside, can be well performed. CONSTITUTION:Air gaps 2 and 21 between an in-reactor recirculation pump casing 6 which is welded and connected to a nozzle 1 of bottom part of nuclear reactor pressure vessel, and the nozzle 1, have a constitution that the gaps can be widened to have enough width through which an inspection device for inspecting a welded part 3, and the like, can pass freely. Accordingly, without any grooving process, the inspection device can pass through the widened air gaps and inspect a welding uranami side of installment welding part of the pump casing, and therewith integrity of the installment welding part can be inspected and reliability of the installment can be confirmed.

8. 发明专利

JPH04194786A REACTOR RECIRCULATION PUMP 失效
公开(公告)号：JPH04194786A
公开(公告)日：1992-07-14
申请号：JP32290690
申请日：1990-11-28
申请人： HITACHI LTD
发明人： NAKAMURA SHOZO , SHIINA KOJI , MIZUSHINA YASUO , INOUE TOMOAKI , CHIBA YOSHIAKI , SAGAWA WATARU , TAKEHARA HIDETOSHI , TANAKA MASAAKI
IPC分类号： G21C15/243 , F04D7/08
摘要： PURPOSE:To prevent occurrence of temperature fluctuation due to the flow back of high temperature reactor water and the generation of unsteady thermal stress by forming a shut and a shut cover so that the pressure loss becomes maximum at the outlet of clearance. CONSTITUTION:If a shaft 1 is formed so that the upper gap in the clearance part 11 is smaller than the lower gap and the outer surface of the shaft has an inclination of theta degree to the inner surface of the shaft cover 9, the uppermost end of the clearance part 11, that is, the gap of the outlet of seal purge water A becomes narrowest. By this, the pressure loss at the outlet becomes maximum and the flow of purge water A is limited at the outlet. Therefore, the pressure at each point in the clearance part 11 becomes higher than pressure P0 at the outlet showing positive pressure characteristic and so the flow of the purge water A becomes stable. Thus the backflow of high temperature reactor water B to the clearance part 11 is prevented. As a result, the temperature fluctuation in the clearance part 11 is prevented, the generation of thermal fatigue on the shaft cover 9 surface is prevented and the reliability of the recirculation pump is improved.

9. 发明专利

JPH0161200B2 失效
公开(公告)号：JPH0161200B2
公开(公告)日：1989-12-27
申请号：JP13030881
申请日：1981-08-21
申请人： HITACHI LTD
发明人： TAKEBE TOMOAKI , SAGAWA WATARU , ARIKAWA ISAMU
IPC分类号： G21D1/04

10. 发明专利

JPH0130000B2 失效
公开(公告)号：JPH0130000B2
公开(公告)日：1989-06-15
申请号：JP3407280
申请日：1980-03-19
申请人： HITACHI LTD
发明人： NEMEZAWA ISAO , ARAKI SHOZO , SAGAWA WATARU
IPC分类号： F04F5/10 , F04F5/00 , F04F5/44 , F04F5/54 , G21C15/25 , G21C19/28

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