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1. 发明专利

JPH03125996A HIGH TEMPERATURE GAS REACTOR 失效
公开(公告)号：JPH03125996A
公开(公告)日：1991-05-29
申请号：JP26396489
申请日：1989-10-12
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： ITO NOBORU , FUKAMICHI KENJIRO
IPC分类号： G21C7/14
摘要： PURPOSE:To enable shifted coupling of a control rod guide tube from a control rod insertion hole by forming a step between a control column upper neutron shielding body and a core column upper shielding body and making the upper end part of a control guide tube movable. CONSTITUTION:A stepped part 25 having a taper 26 is formed between a control rod column upper neutron shielding body 22 and a fuel column upper neutron shielding body 23. A fitting member 28 fitted in a hexagonal recess 27 formed by the stepped part 25 is provided to bundle a plurality of guide tubes 21 on the lower part of a control rod guide tube 21. A circular support plate 29 which also serves as a spacer is provided on the upper end of the guide tube 21. The support plate 29 is housed and held in a cylinder frame 30 provided on the lower part of a guide tube support member 24 and thereby the guide tube 21 is held movably upward and downward, horizontally. Thereby, even if there is a little shift between the axes of the guide tube 21 and the control rod insertion hole 20, they can be connected each other and excess stress doe snot occur in the guide tube 21.

2. 发明专利

JPH04299297A CONTROL ELEMENT RECOVERY DEVICE 失效
公开(公告)号：JPH04299297A
公开(公告)日：1992-10-22
申请号：JP6502191
申请日：1991-03-28
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： ITO NOBORU , JINBO MASAKAZU
IPC分类号： G21C9/033 , G21C19/26
摘要： PURPOSE:To insert a suction tube into a control element insertion hole without injuring a reactor core even in the case where a position difference produces between the control element insertion hole and a stand tube. CONSTITUTION:A suction tube 24 is inserted into a control element insertion hole 9 formed in the reactor core 2 of a gas-cooled reactor and a movable joint 26 is provided on the connection part of the suction tube 24 and a recovery device body 23 in regard to the control element recovery device for sucking to recover a control element 12 from the suction tube 24 with the use of a recovery device body 23 connected to the upper part of the suction tube 24. Even in the case where a relative position difference produces between the suction tube 24 and a stand tube 7, the suction tube 24 can be inserted into the control element insertion hole 9 and the damage of the reactor core 2 can be prevented because the edge of the suction tube 24 does not hit on and come in contact with the wall face of the control element insertion hole 9.

3. 发明专利

JPH03125999A HIGH TEMPERATURE GAS-COOLED REACTOR CONTROL ROD LATCH MECHANISM 失效
公开(公告)号：JPH03125999A
公开(公告)日：1991-05-29
申请号：JP26396589
申请日：1989-10-12
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： ITO NOBORU , MATSUZAKI KAZUHIRO
IPC分类号： G21C19/20
摘要： PURPOSE:To simplify the structure of a manipulator by providing a lock lever for a suspension metal, a spring member for energizing the lock lever locking, and a hook arranged at the lower end of a wire rope for suspending a control rod. CONSTITUTION:The control rod latch mechanism 30 consists of a hook 31 provided on the lower end of a wire rope 13 and a suspending hook 33 coupled through a coupling rod 32 to the upper end of a control rod 12. On the hook 31, a lock lever 34 locking the suspension hook 33 is rotatably provided with a shaft 35 as a fulcrum. The lock lever 34 is always energized in the locking direction by spring force of a spring 36 provided in the axially central part of the hook 31, and in addition, moves by gravity in the locking direction even in the case where there is no spring force of the spring 36. By this constitution, the hook 33 is caught by the hook 31 through the mechanism 30 to couple the control rod 12 with the rope 13 so as to easily perform the coupling work.

4. 发明专利

JPH03293596A FAST BREEDER REACTOR 失效
公开(公告)号：JPH03293596A
公开(公告)日：1991-12-25
申请号：JP9509590
申请日：1990-04-12
申请人： TOSHIBA CORP
发明人： ITO NOBORU
IPC分类号： G21D1/02
摘要： PURPOSE:To mitigate a rise of pressure difference of cover gases between a secondary and a primary systems by providing a removing device of reaction products between cover gas regions of the primary and the secondary systems, and also to provide rupture plates to each of the both ends. CONSTITUTION:A reactor core 4, an upper structure 5 of the reactor and a primary pump 6, and a vessel 2. A steam generator 8 and a secondary pump 8 are housed in a primary and a secondary vessels 2 and 3, respectively, and also an outside of the vessel 3 is surrounded by a nuclear reactor cavity wall 1. Also, insides of the vessels 2 and 3 are covered by cover gases of the primary system and the secondary system, respectively, and a seal blade 16 partitions a space between the vessel 3 and the wall 1. Moreover, rupture plates 19 placed both sides of the wall 1 are connected to a cyclone separator 21 by a piping 20 of discharge system. Concurrently, a removing device 27 of reaction products is provided between primary and secondary cover gas regions 13 and 14 and rupture plates 25 to both ends of the device 27, as well. When an electrical heater 10 damages, the rupture plates 25 are broken down by pressure rise caused by the reaction products and thereafter secondary products pass through the device 27 and consequently pressure difference between the primary and the secondary sides mitigated.

5. 发明专利

JPH0579601A STEAM GENERATOR 失效
公开(公告)号：JPH0579601A
公开(公告)日：1993-03-30
申请号：JP23850091
申请日：1991-09-19
申请人： TOSHIBA CORP
发明人： ITO NOBORU
IPC分类号： F22B1/06 , G21D1/00
摘要： PURPOSE:To limit a range of the spread of damage to heat transfer tubes by disposing partition walls, which divide the heat transfer tubes into a plurality of compartments, in the main body of a steam generator for a nuclear reactor, for which a sodium coolant is used. CONSTITUTION:Heat transfer tubes 2 penetrating through the interior of a steam generator 1 are divided by partition walls 3 whose horizontal section is of a hexagonal shape. A sodium coolant is distributed from the side of a nuclear reactor into each compartment of the heat transfer tubes 2 via an inlet pipe 7 through upper windows 4 provided on the wall faces of the partition walls 3. The sodium coolant descends while exchanging heat with water and returns to the nuclear reactor through lower windows 5 via an outlet pipe 8. If any of the heat transfer tubes 2 is damaged, a breaking plate 6 communicates with the damaged tube with the aid of pressure generated by the damage, and the flow of water is then stopped to prevent the extension of the damage. Thus, the extension of the damage to the heat transfer tubes can be controlled by disposing the partition walls 3 without reducing the heat transfer area of the tubes for the water side.

6. 发明专利

JP2003344022A System and method for measuring dimension of slide scratch 审中-公开
标题翻译：用于测量滑块尺寸的系统和方法
公开(公告)号：JP2003344022A
公开(公告)日：2003-12-03
申请号：JP2002151780
申请日：2002-05-27
申请人： Toshiba Corp , 株式会社東芝
发明人： ITO NOBORU , SHIMODAIRA YOSHIO
IPC分类号： G01B11/02 , G01N21/952
摘要： PROBLEM TO BE SOLVED: To measure the depth and width of a slide scratch rapidly and accurately.
SOLUTION: The system for measuring the dimension of the slide scratch is provided with a laser emitting device 23 which measures the distance up to a rotor journal 3 by emitting a laser beam R, an electric stage 14 which is used for installing the laser emitting device 23, and moves the laser emitting device 23 in the direction of one axis, a base plate 16 which is used for installing the electric stage 14 and mounted on the rotor journal 3, and a personal computer (not shown) which calculates and outputs the depth and width of the slide scratch in the rotor journal 3, based on a distance signal relating to the rotor journal 3 being output from the laser emitting device 23 when the electric stage 14 moves on the base plate 16, thereby moving the laser emitting device 23.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：快速准确地测量滑动刮痕的深度和宽度。解决方案：用于测量滑动刮痕的尺寸的系统设置有激光发射装置23，激光发射装置23通过发射激光束R来测量直到转子轴颈3的距离;电级14，用于安装激光发射装置23，使激光发射装置23沿一个轴线方向移动，用于安装电动台14并安装在转子轴颈3上的基板16和计算机并且当电动台14在基板16上移动时，基于从激光发射装置23输出的与转子轴颈3相关的距离信号，输出转子轴颈3中的滑动划痕的深度和宽度，激光发射装置23.版权所有（C）2004，JPO

7. 发明专利

JP2001055904A DRAIN SEPARATING MECHANISM FOR STEAM TURBINE 失效
公开(公告)号：JP2001055904A
公开(公告)日：2001-02-27
申请号：JP23085899
申请日：1999-08-17
申请人： TOSHIBA CORP
发明人： ITO NOBORU
IPC分类号： F01D9/02 , F01D25/32
摘要： PROBLEM TO BE SOLVED: To prevent erosion of a diaphragm outer ring at a subsequent turbine stage when collected water drops are guided to a turbine exhaust hood by a method wherein a passage to discharge drains to the outside is formed in a spread opening spreading toward the outflow side of drains. SOLUTION: A drain catcher 19 in which a passage 21 is formed is formed in a diaphragm outer ring 15. The passage 21 is formed in the shape of a diffuser, the inlet side is formed into an opening 22 having a comparatively smaller cross section and into a spread opening 23 having a cross section gradually increased toward the outlet side. In the so formed diaphragm outer ring 15, a drain catcher 19 to capture water drains flied by the centrifugal force of a turbine moving blade or flowing along a wall surface 20. When water drops are discharged through the passage 21, a velocity of flow of water drops is decreased by the spread opening 23 and a pressure is restored. Since water drops of which the velocity of flow is decreased are also decreased in a jet force following reduction of speed energy, when the water drops are collided with the diaphragm outer ring 24 at a subsequent turbine stage, an impact force is remarkably decreased.

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