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71. 发明专利

JPH0666987A CONTROL-ROD REMOVING METHOD AND CORE CONTROLLING ASSEMBLY 失效
公开(公告)号：JPH0666987A
公开(公告)日：1994-03-11
申请号：JP13016393
申请日：1993-06-01
申请人： GEN ELECTRIC
发明人： ROI KURIFUOODO CHIYARUBAAGU
IPC分类号： G21C7/16 , G21C7/113 , G21C19/19 , G21C19/20
摘要： PURPOSE: To facilitate removal of a control rod from a reactor furthermore by uncoupling the control rod from a control rod drive section through turning and then lifting the control rod from the reactor. CONSTITUTION: The core control assembly 22A comprises a control rod drive section 66A which can insert a control rod 60A sufficiently upward into a core 20 such that the control rod 60A can pass through a fuel supporting section 62A. The supporting section 62A has an opening matching the star cross-section of the control rod 60A. The control rod 60A can not be turned when it is extended into the supporting section 62A but can be turned to be disengaged or removed after passing through the supporting section 62A. When the control rod 60A is removed, the top head 24 of a vessel 12 is removed and then other components, e.g. a steam separator 16 and a dryer 14, are removed followed by removal of fuel bundles 35, 36. Finally, the control rod 60A is inserted up to a disengaging position and turned to be decoupled from the drive section 66A and then lifted up from the vessel 12.

72. 发明专利

JPH05508927A 失效
公开(公告)号：JPH05508927A
公开(公告)日：1993-12-09
申请号：JP51370391
申请日：1991-06-28
IPC分类号： G21C5/00 , F04D7/08 , F04D13/04 , F04D15/00 , F04D29/04 , F04D29/047 , F04D29/42 , F04D29/44 , G21C1/08 , G21C1/28 , G21C5/02 , G21C15/24 , G21C15/243 , G21C19/20

73. 发明专利

JPH0584478B2 失效
公开(公告)号：JPH0584478B2
公开(公告)日：1993-12-02
申请号：JP19030485
申请日：1985-08-29
申请人： TOKYO SHIBAURA ELECTRIC CO
发明人： SAKAMAKI KAZUO
IPC分类号： G21C19/20 , G01T3/00

74. 发明专利

JPH05164884A COUPLING/UNCOUPLING METHOD FOR CONTROL ROD 失效
公开(公告)号：JPH05164884A
公开(公告)日：1993-06-29
申请号：JP32762991
申请日：1991-12-11
申请人： TOSHIBA CORP
发明人： TOMATSU TSUTOMU
IPC分类号： G21C7/16 , G21C19/20
摘要： PURPOSE:To couple/uncouple a control rod drive mechanism (CRD) with/from a control rod(CR) by turning the control rod by 90 deg. using a control rod(CR) gripper from the upper section of a reactor core. CONSTITUTION:A CR gripper 20 is provided with exclusive rotation receiving supports 21, and the rotation receiving supports 21 are supported by upper lattice plates 5 while being provided with functions to receive the rotation reaction of the CR gripper 20 and also to position the CR gripper. The rotation of the gripper is actuated by an actuator 31, and the gripping and releasing actions of the CR gripper 20 are actuated by an air cylinder 46. A CR is lifted up fairly above its fully extracted position by the use of the CR gripper 20, and the CR 4 is rotated by 90 deg. in a state that a CRD (control rod drive mechanism) is extracted up to the position of over-travel, so that the CR 4 is uncoupled from the CRD. Furthermore, the CR 4 is rested on the stopper of the CRD using the CR gripper 20 in a state that the CRD is fully extracted, so as to be rotated by 90 deg., so that the CR 4 is coupled with the CRD.

75. 发明专利

JPH05100079A DEVICE FOR SEALING AND CLOSING AND OPENING PATH MUTUALLY CONNECTING CENTRAL CHANNEL OF TRANSPORTABLE HOLLOW BODY AND VERTICAL WELL FORMED TO FIXED STRUCTURE 失效
公开(公告)号：JPH05100079A
公开(公告)日：1993-04-23
申请号：JP15700491
申请日：1991-06-27
申请人： FRAGEMA FRAMATOME & COGEMA
发明人： NIKORASU DO SERUU , DOMINIKU RIMUUZAN
IPC分类号： G21C19/18 , G21C19/20 , G21F7/005
摘要： PURPOSE: To obtain a sealing up/opening device which does not allow a certain amount of gas to be caught between a central channel and the blocking member of a vertical well when a hollow main body is brought into contact with a fixed structure successively after the carrying operation of a component between the hollow main body and fixed structure. CONSTITUTION: A sealing up/opening device is provided with a member 16 which blocks the central channel 3 of a hollow main body 1 and another member which blocks the upper end section of a well 18 at adjacent positions to the surface 15 of a fixed structure for supporting a conveyable hollow main body. These members 16 and 17 are arranged on the inside of the contact area between at least one O-ring seal 13 and the surface 15. Each of the members 16 and 17 has a flat surface positioned on the surface 15 of the hollow main body or the flat supporting surface of the fixed structure. At least one of the members 16 and 17 can move in the axial direction of the well 18 and central channel 3 of the hollow main body 1 and in the direction perpendicular to the axial direction between the closing position and opening position of the member.

76. 发明专利

JPH04279897A FUEL REPLACEMENT MACHINE OF REACTOR 失效
公开(公告)号：JPH04279897A
公开(公告)日：1992-10-05
申请号：JP4203691
申请日：1991-03-07
申请人： TOSHIBA CORP
发明人： KUBODERA OSAMU
IPC分类号： G21C19/02 , G21C19/19 , G21C19/20
摘要： PURPOSE:To ensure replacement of an internal pump part in a relatively easy driving control mode by providing an arm turned around the vertical axis of an internal pump replacement device below a laterally moving truck. CONSTITUTION:A fuel replacement machine is primarily formed out of a truck 26 running above a nuclear container 1, a laterally moving truck 27 provided above the truck 26 and of a fuel replacement mast 38. An internal pump replacement device 21 and a camera device 40 for underwater surveyllance are mounted on the truck 27, while a monitor television 62 for displaying an image photographed by the camera 40 of a remote control chamber 38, is provided. By turning a grip tool 54 through the turning arm of a device 21, circular orbit operation is carried out, and safe and accurate control can be carried out without complicated circular orbit control and an interlock function necessary for the control, and there is no need to arrange a surveyllance personnel on the replacement device.

77. 发明专利

JPH04238297A DEVICE FOR GUIDING INSERTION OF IN-REACTOR INSTRUMENTATION PIPE 失效
公开(公告)号：JPH04238297A
公开(公告)日：1992-08-26
申请号：JP522191
申请日：1991-01-21
申请人： TOSHIBA CORP
发明人： SAKUMA TOYOO
IPC分类号： G21C19/20
摘要： PURPOSE:To shorten the exchange work time, and facilitate the handling in the maintenance by seating a device for guiding insertion of an in-reactor instrumentation pipe on a fuel supporting fitting under the condition that an instrumentation pipe of an exchange part is removed, and projecting a guide part with a dead weight of the device at the time of seating, and inserting the in-reactor instrumentation pipe into a guide pipe with guide of the projecting guide part. CONSTITUTION:A handle 12 of a device 11 for guiding insertion of an in-reactor instrumentation pipe is held by a holding tool 7, and the device 11 is passed through an upper grid plate 3, and is seated on a fuel supporting fitting 8 so as to prevent interference with a control rod 9. Simultaneously, a pushing bar 17 fitted to a tie plate 24 pushes a supporting bar 18 up with a dead-weight of the device 11, and a guide part 20 is tuned around of a fixed pin 19, and is projected from a notch part of a movable channel box 15. Under this condition, a in-reactor instrumentation pipe is led by a receiving plate 13 and a sliding plate 14, and is guided by the guide part 20, and is inserted into an in-reactor instrumentation pipe guiding pipe 6 by holding the in- reactor instrumentation pipe with a holding tool (in-core handling tool), which is operated by a fuel exchanging machine, and lowering it.

78. 发明专利

JPH045359B2 失效
公开(公告)号：JPH045359B2
公开(公告)日：1992-01-31
申请号：JP20947984
申请日：1984-10-05
IPC分类号： G21C19/02 , G21C19/20

79. 发明专利

JPH0429095A METHOD FOR PRESERVING NEUTRON FLUX MONITOR HOUSING AND HEAT TREATING DEVICE THEREOF 失效
公开(公告)号：JPH0429095A
公开(公告)日：1992-01-31
申请号：JP13480390
申请日：1990-05-24
申请人： HITACHI LTD
发明人： ENOMOTO KUNIO , OTAKA MASAHIRO , HASEGAWA KUNIO , HAYASHI MAKOTO , SAKATA SHINJI , SAITO HIDEYO , KUROSAWA KOICHI , SAITO TAKASHI , KARATSU YOSHINORI , ITO MOTOYA
IPC分类号： G21C19/02 , B23K13/01 , G21C13/00 , G21C13/087 , G21C17/10 , G21C19/20
摘要： PURPOSE:To obtain the residual stresses of compression by inserting the heat treating device which executes induction heating and cooling into the cavity formed by putting a water sealing cap on the top part of the neutron flux monitor housing from under side and executing rapid heating and rapid cooling. CONSTITUTION:The cap 4 which seals the neutron flux monitor housing 3 with water is mounted to the top part of the housing 3. A heating coil 11 and a cooling pipe 12 are installed in the inside of the housing by connecting the coil and the pipe vertically via a connector 15. The cooling pipe 12 is hollow cylindrical double pipes and a bottom plate 12a is provided to the bottom end. A lifting rod 19 rises from the edge of a lower plate 12a and this rod 19 engages with a lifting cylinder 20 so as to hang down. Many nozzle holes 12b are provided on the outer periphery forming the outer part of the double pipes of the cooling pipe 12. Cooling water 23 is injected from the nozzle holes 12b. After the coil 11 is positioned, an AC current is controlled by a power source controller 25 and is supplied from a transformer 13 to the coil 11. An induced current is induced to the inside surface layer of the housing 3 and is heated. The cooling pipe 12 is risen and the cooling water is ejected from the nozzle holes 12b after the stop of the heating.

80. 发明专利

JPH049697A METHOD FOR REPLACING THIMBLE TUBE 失效
公开(公告)号：JPH049697A
公开(公告)日：1992-01-14
申请号：JP10998590
申请日：1990-04-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： YAMASHITA TAKESHI , FUKUDA MASAMITSU
IPC分类号： G21C19/20
摘要： PURPOSE:To smoothly separate a highly radiated part by pressing a thimble tube to be replaced from an operation floor and projecting the highly radiated part of the thimble tube from the lower core plate in a neuclear reactor vessel. CONSTITUTION:A lower clamp part 74 is connected to the piston rod 76 of a hydraulic cylinder 75 so as to be vertically moved. Thereby, the thimble tube 1 can be moved in a vertically required direction by controlling the grasping action of a vertical clamp 73 and the vertical movement of the lower clamp 74. Such action of a grasping tool 70 can be remotely controlled from an operation unit 40 set up on the operation floor 2. After checking the state by an underwater monitoring device, the projected part of the tube 1 is grasped by the tool 70 and cut off by driving a cutting tool 30.

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