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11. 发明专利

JPH06323777A HEAT EXCHANGER AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH06323777A
公开(公告)日：1994-11-25
申请号：JP11570293
申请日：1993-05-18
申请人： TOSHIBA CORP
发明人： SHIMANO KUNIO , IKAKURA HIROAKI , ISHITORI TAKASHI , NINOMIYA SUSUMU , INOUE MASAAKI
IPC分类号： F28D7/10 , F28D7/02 , F28D7/16 , F28F11/00 , G21D1/00 , G21D5/12
摘要： PURPOSE:To provide a heat exchanger wherein the capacity thereof can be increased without enlarging the heat exchanger and without increasing the number of heating tubes, and further heat transfer characteristics is improved by restoring a close contact between inner and outer tubes and a porous matal. CONSTITUTION:In a heat exchanger provided with a leak sensing means for sensing a leakage of a fluid passing through a double tube type heating tube 2, in which a porous metal 4 is disposed in a gap between an inner tube 5 and an outer tube 3 of the tube 2, through the gap between the tube 5 and the tube 3, the heating tube 2 comprises a helical type double heating tube 52.

12. 发明专利

JPH0326995A DRIVE MECHANISM OF CONTROL ROD FOR FAST BREEDER 失效
公开(公告)号：JPH0326995A
公开(公告)日：1991-02-05
申请号：JP16221389
申请日：1989-06-23
申请人： TOSHIBA CORP
发明人： IKAKURA HIROAKI
IPC分类号： G21C7/14
摘要： PURPOSE:To allow the mechanism to make exchange work of an electromagnet easy by dividing a iron core part of an electromagnet into a lower iron core and an upper iron core detachably engaged with the lower iron core to detachably mount a coil part on the upper iron core so as to provide the upper iron core on the lower end of an inside tube. CONSTITUTION:An electromagnet 21 consists of a coil part 28 and an iron core part 27, which is divided into a lower iron core 29 fixed on an extension tube 27 and an upper iron core 30 detachably engaged with the lower iron core 29. A projection part 55 detachably engaged with a recess part 34 is provided on the upper iron core 30 to support on the lower end of an inside tube 36 in an extension tube 20 through a support shaft 37 so as to detachably hold the coil part 28.

13. 发明专利

JPH02194395A CONTROL ROD DRIVE DEVICE FOR FAST BREEDER 失效
公开(公告)号：JPH02194395A
公开(公告)日：1990-07-31
申请号：JP1425989
申请日：1989-01-24
申请人： TOSHIBA CORP
发明人： IKAKURA HIROAKI
IPC分类号： G21C7/14
摘要： PURPOSE:To remove the foreign matter sticking to the attraction surface between an electromagnet and an armature by providing a hermetic chamber in an extension pipe and providing a nozzle part, the bottom end of which opens to the central part of the electromagnet by facing the attraction surface in connection to the hermetic chamber. CONSTITUTION:The electromagnet 10 is mounted to the bottom end of the extension pipe 7. The hermetic chamber 17 is provided in the upper position of the magnet 10 in the extension pipe 7 and the top end part thereof is connected to a pressure operating unit via a pipe 18. A pipe 19 connected to the chamber 17 is provided in the central part of the magnet 10 and a nozzle rod 20 is disposed in the pipe 19. The nozzle the bottom end of which opens to face the attraction surface of the magnet 10 is thereby constituted. A negative pressure is then generated in the chamber 17 by the pressure operating unit, by which liquid Na 6 is admitted through the pipe 19 into the chamber 17. The inside of the chamber 17 is pressurized at the state of bringing the magneto 10 and the armature 14 at the top end of the control rod 13 into proximity to each other, by which the liquid 6 in the chamber 17 is injected and the magnetic foreign matter 21 sticking to the attraction surfaces of the magnet 10 and the armature 14 is removed.

14. 发明专利

JP2002144266A WORKING SYSTEM 失效
公开(公告)号：JP2002144266A
公开(公告)日：2002-05-21
申请号：JP2000337921
申请日：2000-11-06
申请人： TOSHIBA CORP
发明人： OKADA SATOSHI , SATO KATSUHIKO , IKAKURA HIROAKI , YUGUCHI YASUHIRO
IPC分类号： G21C17/003 , B25J9/22 , B25J13/08 , B25J19/02 , G21C17/013 , G21C19/02
摘要： PROBLEM TO BE SOLVED: To provide a working system capable of certainly carrying out working by remote control in a narrow work environment. SOLUTION: A controller 34 to control a driving mechanism 12 provided out of the work environment is provided with a state detection processing unit 38 to find a driving state data including at least either one of a data to show a state of the driving mechanism 12 and a data to show a positional relation of the driving mechanism 12 and an article in the circumference of it in accordance with information taken in by a state detector 4 provided on a working device 10, a simulation unit 39 to find a time change of a driving state data to be detected by the state detection processing unit 38 by simulation in the case when the driving mechanism 12 normally works in accordance with a specified driving plan and a state comparison processing unit 40 to compare the driving state data found by the state detection processing unit 38 with the driving state data found by the simulation unit 39 in the case of actuating the driving mechanism 12 in accordance with the driving plan.

15. 发明专利

JP2001349978A PREVENTIVE MAINTENANCE DEVICE FOR STRUCTURE IN REACTOR 失效
公开(公告)号：JP2001349978A
公开(公告)日：2001-12-21
申请号：JP2000171116
申请日：2000-06-07
申请人： TOSHIBA CORP
发明人： ONO YOSHIAKI , KATO HIROMI , HAMAMOTO YOSHIO , IKAKURA HIROAKI , TOGASAWA YUTAKA , KASAI SHIGERU
IPC分类号： G21C19/02
摘要： PROBLEM TO BE SOLVED: To enhance the reliability and durability of a light guide expansible part and prevent oil component in a lubricant from adversely affecting a light guide means. SOLUTION: This device has the light guide means 31, 36 and 39 connected together to guide laser beams of a laser beam oscillator 25, an irradiation head 51 collecting the laser beams from the light guide means 31, 36 and 39 and irradiating with the laser beams the constructed part of an in-reactor structure in a reactor pressure vessel, and a remote operation device 50 guiding the laser beams to the irradiation head 51 and remotely driving eth irradiation head 51 for turning movement and vertical and longitudinal movement. The light guide means 39 is provided with the light guide expansible part which is capable of expansion and contraction and surrounded by bellows.

16. 发明专利

JPH0943380A SUPPORT SEALING DEVICE FOR CORE SUPERSTRUCTURE AND REMOVAL DEVICE FOR SODIUM ETC. 失效
公开(公告)号：JPH0943380A
公开(公告)日：1997-02-14
申请号：JP19744695
申请日：1995-08-02
申请人： TOSHIBA CORP
发明人： SHIRATORI KOZO , KASAI SHIGEO , ARIYOSHI MASAHIKO , MATSUMOTO KOJI , HASEGAWA AYA , KUBOTA KENICHI , IKAKURA HIROAKI
IPC分类号： G21C13/00 , G21F9/28
摘要： PROBLEM TO BE SOLVED: To provide a support sealing device for a reactor superstructure and a removal device for sodium etc., which secures soundness of raising/lowering action of the core superstructure and causes less exposure of workers by providing a seal or a removal device for superiorly removing sodium, etc., in a hole part, which penetrates the upper lid, or a shaft part. SOLUTION: In a through hole 13 in a support 9, etc., for supporting a core superstructure which holds a control rod drive mechanism for driving a control rod which controls nuclear reaction in a core in the upper lid 5 of a reactor container including the core and sodium 3 for coolant in a fast breeder, a sealing means for preventing increase in sodium 3 provided in a sleeve 22 which supports the support 9 is formed from high-temperature resistant metal mesh seal 23.

17. 发明专利

JPH05134077A CONTROL ROD ASSEMBLY 失效
公开(公告)号：JPH05134077A
公开(公告)日：1993-05-28
申请号：JP29695291
申请日：1991-11-13
申请人： TOSHIBA CORP
发明人： SAKAMOTO SADAO , SHIMIZU HIROSHI , SUZUKI MASAO , IKAKURA HIROAKI
IPC分类号： G21C9/02
摘要： PURPOSE:To obtain a control rod assembly preventing another extraction of the main body of a control rod even on the occasion of suppression of a core output and a temperature fall after a scram motion, by inserting the control rod into a core in accordance with a temperature rise when the temperature of a coolant of a reactor rises and by maintaining the position of the rod. CONSTITUTION:The upper end of the main body of a control rod held elevatably in a core is suspended by an extension rod or the like, and a temperature- sensitive member 25 having a double-cylinder-shaped periphery and a spring 21 suspending inside the member an extension rod 17 of which the fore end is made a ratchet shaft are provided in the upper part of the main body of this control rod. Moreover, a mechanism for compensating and keeping temperature wherein bellows 22 isolating the spring 21 and the inside of the temperature- sensitive member 25 is provided for partitioning from outside, a liquid metal is sealed in a spring part and the temperature-sensitive member and made to communicate with the outside through the intermediary of a flow resistance body and a ratchet mechanism 26 making the ratchet shaft 23 engaged is provided in the lower end of the temperature-sensitive member 25, is provided.

18. 发明专利

JPH01187497A FAST BREEDER 失效
公开(公告)号：JPH01187497A
公开(公告)日：1989-07-26
申请号：JP1138788
申请日：1988-01-21
申请人： TOSHIBA CORP
发明人： IKAKURA HIROAKI
IPC分类号： G21C7/14
摘要： PURPOSE:To prevent generation of thermal stresses by providing shutter mechanism which closes the spacing between a control rod assembly and control rod guide pipe at the time of connecting the control rod assembly and a control rod drive mechanism and is housed into the control rod assembly at the time of the non-connection thereof. CONSTITUTION:First, a shaft 31 is held energized downward by a finger rod 28 and, therefore, a shutter member 35 is energized diametrally outward via a sliding part 36 by a tapered part 34 of the shaft 31 while the control rod assembly 5 and the control rod drive mechanism side are held connected. As a result, the shutter 37 of the member 35 is projected between the assembly and the control rod guide rod 29 to close the spacing between the assembly 5 and the guide pipe 21. On the other hand, the finger rod 28 is brought into the state of being removed downward from a latch finger 27 when the assembly 5 is disconnected from the control rod drive mechanism. As a result, the engagement of the finger 27 with a handling head 26 is released by closing of the finger 27 and the connection between the assembly 5 and the control rod drive mechanism side is released. The assembly 5 is thereby dropped into the guide pipe 21.

19. 发明专利

JPS63290990A SHUTDOWN DEVICE FOR NUCLEAR REACTOR 失效
公开(公告)号：JPS63290990A
公开(公告)日：1988-11-28
申请号：JP12560587
申请日：1987-05-22
申请人： TOSHIBA CORP
发明人： WATANABE HISAO , IKAKURA HIROAKI
IPC分类号： G21C7/12 , G21C9/02
摘要： PURPOSE:To prevent a decrease in holding power by intervention of foreign matter between an electromagnet which selectively attracts an armature fixed to the top end of a control element and said armature by forming rugged parts to at least either of the attraction faces of the armature and the electromagnet. CONSTITUTION:The armature 36 is attracted to the electromagnet 38 formed with the rugged parts 105, 105a, 104, 104a on the attraction face 101 when electric current is passed to a coil 41 by an energizing device 103. The coolant between both is displaced at this time to flow from the projecting parts 105, 105a toward the recesses 104, 104a and magnetic particles 106 are attracted into the recesses 104, 104a and, therefore, the generation of a spacing between the attraction faces 101 and 102 is obviated. Alternating magnetic fields different from the magnetic fields generated at the time of attraction are generated when the backward current is passed to the coil 41 by the device 103 after the armature 36 is detached by de-energizing the electromagnet. The particles 106 can be detached by decreasing the current value down to zero.

20. 发明专利

JPS62270879A PERFORMANCE DETECTOR FOR SOLENOID VALVE 失效
公开(公告)号：JPS62270879A
公开(公告)日：1987-11-25
申请号：JP11252486
申请日：1986-05-19
申请人： TOSHIBA CORP
发明人： IKAKURA HIROAKI , OKADA YASUMASA
IPC分类号： F16K37/00
摘要： PURPOSE:To make an on-off operating state of a solenoid valve discriminable in a positive manner, by installing a discriminating device which makes the setting value discriminating the operating state of the solenoid valve differ with both cases that exciting voltage is impressed on a solenoid and being not yet impressed and thereby discriminating between these cases. CONSTITUTION:A solenoid 3 driving a valve body 1 of a normally closed solenoid valve 4 is connected to a AC power source 7 via contacts 6A and 6A of a switch 6 upon being connected to the primary side of a current transformer 5 in series. The primary side of a transformer 8 is loaded on the power source 7, while the secondary side is connected to the load side of these contacts 6A and 6A via contacts 6B and 6B. The secondary side of the current transformer 5 is connected to a judging circuit 10 via a buffer circuit 9, and at a first comparator installed in this judging circuit 10, an indicator 11 is operated when both contacts 6A are closed as well as when an input voltage exceeds the first setting value, while at a second comparator, the indicator, the indicator 11 is made so as to be operated when both contacts 6B are closed as well as when the input voltage becomes unsatisfied to the second setting value.

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