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1. 发明专利

JPH06160558A REACTOR CORE INTERNAL STRUCTURE SUPPORTING DEVICE FOR NUCLEAR FUSION DEVICE 失效
公开(公告)号：JPH06160558A
公开(公告)日：1994-06-07
申请号：JP31455392
申请日：1992-11-25
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： TADA EISUKE , NISHIO SATOSHI , SHIBANUMA KIYOSHI , SHIBUI MASANAO , FUKUSHIMA HISASHI
IPC分类号： G21B1/11 , G21B1/00 , G21B1/17
摘要： PURPOSE:To prolong the life of bellows and improve the operation availability factor of a reactor by separating the inflow area of a driving fluid driving a piston and the arranged area of the vacuum sealing bellows, and indirectly pressurizing the bellows. CONSTITUTION:When a reactor core internal structure is to be fixed to a vacuum vessel, a liquid inlet 14 is pressurized, the inner tube 6a and outer tube 6b of the piston rod of a piston 6 are integrally driven in the direction to shrink vacuum sealing bellows 11, and a cotter 7 is driven into the insertion hole of the reactor core internal structure. The driving liquid 12 leaked to the bellows 11 side is discharged from an atmosphere release port 16. When the reactor core internal structure is to be removed from the vacuum vessel, a liquid inlet 15 is pressurized, the cotter 7 is extracted, and the liquid 12 leaked to the bellows 11 side is discharged from the atmosphere release port 16. The pressure force of the liquid 12 is not directly applied to the bellows 11, and only the differential pressure between the vacuum region and the atmosphere is applied. The life of the bellows 11 repeatedly expanded and shrunk is largely extended, and it can contribute to the improvement of the operation availability factor of a reactor.

2. 发明专利

JPH0829566A FIRST WALL OF FUSION REACTOR 失效
公开(公告)号：JPH0829566A
公开(公告)日：1996-02-02
申请号：JP16411794
申请日：1994-07-15
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： NAKAHIRA MASATAKA , SEKI MASAHIRO , TADA EISUKE , KOIZUMI KOICHI , FUKUSHIMA HISASHI , ITO KOJI , SHIBUI MASANAO
IPC分类号： G21B1/11 , G21B1/00 , G21B1/17
摘要： PURPOSE:To prevent occurrence of an abnormal situation by employing a double wall structure for a plurality of cooling channels having cooling boards, inserting a thermal conduction member composed of a braided mesh wire between the walls there of and secured in place, detecting the cooling water leaked between the walls and removing the heat, thereby preventing the cooling water from intruding directly into a vacuum vessel due to damage of the cooling channel. CONSTITUTION:A plurality of cooling channels 8 having cooling boards 9 employs double wall structure having inner and outer walls 10a, 10b and a braided mesh wire 11 is inserted between the inner and outer walls 10a, 10b and secured in place. Even if the inner wall 10a is damaged due to aging or deterioration in the strength of material caused by conduction of heat from the armor tile 4, the cooling water leaks to the air gap of the braided mesh wire 11 between the inner and outer walls 10a, 10b and direct intrusion into a vacuum vessel 2 is blocked by the outer wall 10b. Furthermore, the damaged part can be specified by providing each cooling board 9 with a moisture gauge or a vacuum gauge for detecting the leakage of cooling water.

3. 发明专利

JPH0194291A CONTROL ROD ELEMENT 失效
公开(公告)号：JPH0194291A
公开(公告)日：1989-04-12
申请号：JP25062087
申请日：1987-10-06
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： MOGI HARUYOSHI , FUKUSHIMA HISASHI
IPC分类号： G21C7/10
摘要： PURPOSE:To improve a safety and a working efficiency, by decreasing the generation of a thermal stress caused by a difference in thermal expansion rates during a reactor scram. CONSTITUTION:With a clutching mechanism of a notched part 121 of a lower cap 116 and a notched part 122 formed at a lower end of an outer pipe 111a, and another clutching mechanism of a notched part 123 formed at an upper cap 115 and a notched 124 formed at an upper end of the outer pipe 111a a relative displacement caused by an axial and radial thermal expansion difference of the outer pipe 111a against an inner pipe 111b is absorbed. On the other hand, by making the inner pipe 111b and a spider 114 to be a fitting mechanism, a relative displacement along an axial and radial direction of the both parts caused by a thermal expansion, is absorbed. Thereby, the generation of thermal stress caused by a difference in thermal expansion and also the generation of a thermal strain is well prevented. Consequently, a integrity of a control rod element 106 and also a control rod 104 can be secured and its safety is much improved.

4. 发明专利

JPH08278383A PRIMARY WALL OF FUSION DEVICE 失效
公开(公告)号：JPH08278383A
公开(公告)日：1996-10-22
申请号：JP8012695
申请日：1995-04-05
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： SEKI MASAHIRO , TADA EISUKE , KOIZUMI KOICHI , NAKAHIRA MASATAKA , OOSEJI KOUICHI , FUKUSHIMA HISASHI , SHIBUI MASANAO , ITO KOJI
IPC分类号： G21B1/11 , G21B1/00 , G21B1/13 , G21B1/17
摘要： PURPOSE: To provide a compact primary wall superior in cooling performance and capable of using in a large scale fusion device operated for long time. CONSTITUTION: On the inner surface of a vacuum vessel 2, blanket or shield body facing to plasma, corrugated plates 10, 10 having a pair of upper projections and lower dents are provided as a part 5 for fixing armor. In between the pair of upper and lower corrugated plates 10, 10, a partition plate 11 is inserted to form a going coolant path 8 and returning coolant path 9. An armor 4 is fixed to the dent part of the upper plate 10 with armor fixing bolts 7. By this, fixing the armor 4 and forming coolant paths 8 and 9 are attained without thickening the primary wall and cooling efficiency is improved because the contact area between the armor 4 and the armor fixing pat 5 is large. Further, temperature rise in the armor 4 can be suppressed low and simultaneously, thermal stress generated in the armor fixing part 5 can be reduced.

5. 发明专利

JPS63250589A CONTROL ROD FOR HIGH-TEMPERATURE GAS-COOLED REACTOR 失效
公开(公告)号：JPS63250589A
公开(公告)日：1988-10-18
申请号：JP8593687
申请日：1987-04-08
申请人： JAPAN ATOMIC ENERGY RES INST , TOSHIBA CORP
发明人： MOGI HARUYOSHI , FUKUSHIMA HISASHI
IPC分类号： G21C7/11 , G21C7/10

6. 发明专利

JPS5495896A COIL JOINT SYSTEM OF NUCLEAR FUSION REACTOR 失效
公开(公告)号：JPS5495896A
公开(公告)日：1979-07-28
申请号：JP196778
申请日：1978-01-13
申请人： JAPAN ATOMIC ENERGY RES INST , TOKYO SHIBAURA ELECTRIC CO
发明人： OOKUBO MINORU , ANDOU TOSHIROU , OOTA MITSURU , FUKUSHIMA HISASHI , NAKAZATO TAKASHI
IPC分类号： H01F6/06 , G21B1/00 , G21B1/11 , H01F6/00 , H05H1/12
摘要： PURPOSE:To constitute coil joint device of two divided poloidal coil of nuclear fusion reactor with a minimum of three joints to join the protrusion with coil end and the joint enabling to assembly in narrow and limited space. CONSTITUTION:Toroidal coil 2 making magnetic field where plasma is enclosed within two divided vacuum vessel 1 is wound around the outer periphery of vacuum vessel. Coil connecting unit is divided into three parts with joints 7,8,9. This allows the weight of one piece to make light, further connection work may be performed from limited space 1b of vacuum vessel 1 with ease. Thus the tension force thereof may be fully born by connecting the ring type protrusion provided for the joint unit even if generating tension force within coil 2 during energizing.

7. 发明专利

JPH03195997A CONTROL ROD DRIVE MECHANISM FOR HIGH TEMPERATURE GAS COOLED REACTOR 失效
公开(公告)号：JPH03195997A
公开(公告)日：1991-08-27
申请号：JP33510189
申请日：1989-12-26
申请人： TOSHIBA CORP
发明人： FUKUSHIMA HISASHI
IPC分类号： G21C7/14
摘要： PURPOSE:To prevent a life shortening of a wire rope caused by metal contact corrosion and to intend improvement of operational efficiency of a nuclear reactor by forming an electrically insulating film which has a higher hardness than the rope, on whole contacting surface of a drum and a guide pulley with the rope. CONSTITUTION:A wire rope 6 is contacted with and guided by a guide pulley 16 which is a guide pulley parent material 16a coated by a ceramic coating film 16b by spraying of an electrically insulating substance of which hardness is higher than that of the rope 6, such as a ceramic, upto a required thickness. Making a supporting point of the guide pulley 16 to be a boundary, the downward rope 6 is pulled vertically by load of a control rod, and the upward rope 6 is wound around a drum 17 having a ceramic coating film 17b which is formed on the whole contacting surface of the drum parent material 17a with the rope 6, at a certain angle to the vertical direction. With this procedure, metal contact corrosion caused by a local cell which often becomes a problem in case of metals to be contacted one another, can be avoided. Also, as the hardness of the ceramic films 156b and 17b are higher than that of the rope 6, the insulating layers are scraped off by the rope 6 and the metals contact one another after a certain time, and thereby there is no possibility for the contact corrosion to occur.

8. 发明专利

JPH07318671A VACUUM VESSEL FOR FUSION REACTOR 失效
公开(公告)号：JPH07318671A
公开(公告)日：1995-12-08
申请号：JP11323394
申请日：1994-05-27
申请人： TOSHIBA CORP
发明人： ITO KOJI , FUKUSHIMA HISASHI
IPC分类号： G21B1/11 , G21B1/00 , G21B1/17
摘要： PURPOSE:To facilitate the cooling while satisfying the mechanical rigidity and the shielding performance without lowering the perimetral electric resistance in the troidal direction by filling a space, defined by the inner/outer walls of vacuum vessel and each rib, with a large number of neutron shielding elements. CONSTITUTION:The vacuum vessel has double wall structure of inner and outer walls 10, 11 with a plurality of troidal ribs 12 being arranged therebetween and the spaces thus defined are filled with a large number of spherical neutron shielding elements 14. Since a thin plate can be employed for the walls 10, 11 without sacrifice of the total mechanical rigidity, the perimetral electric resistance of the vessel wall itself can be increased in the troidal direction. Furthermore, since the diameter of the element 14 is shorter than the peripheral length of the vessel in the troidal direction and an insulation layer is formed on the outer surface of each shield, the perimetral electric resistance at the shielding layer part filled with the elements 14 can also be increased in the troidal direction. This structure facilitate the cooling by increasing the perimetral electric resistance in the troidal direction without sacrifice of mechanical rigidity and shielding performance.

9. 发明专利

JPS6474497A BRAKE DEVICE FOR CONTROL ROD DRIVING DEVICE 失效
公开(公告)号：JPS6474497A
公开(公告)日：1989-03-20
申请号：JP23100587
申请日：1987-09-17
申请人： TOSHIBA CORP
发明人： FUKUSHIMA HISASHI
IPC分类号： G21C7/14
摘要： PURPOSE:To easily adjust brake force by constructing members for holding brake shoes in such a manner that the members can be radially slid. CONSTITUTION:A centrifugal brake device 15 for limiting the free falling speed of a control rod is connected via gears 14, 11, etc., to a drum for winding a control rod hanging wire rope. The rotating speed of an inside cylinder 37 fixed to a revolving shaft 15a increases as well with an increase in the drum speed. Spring plates 29 are then deflected by centrifugal force so that the brake shoes 30 and the inside surface of the stationary outside cylinder 32 come into frictional contact with each other. A tapered adjusting rod 42 moves to the gear 14 side via a bearing 41 and moves slide plates 40 outward in the radial direction of the inside cylinder 37 by overcoming the force of belleville springs 48 if an adjusting screw 36 screwed to a stationary base 36 is advanced to the gear 14 direction. Engaging pieces 38 are then moved outward in the radial direction as well and, therefore, the spacing between the shoes 30 and the outside cylinder 32 decreases and the brake force at the prescribed rotating speed is increased. The brake force is decreased if the screw 36 is advanced in the opposite direction.

10. 发明专利

JPH09196057A SLIDING BEARING AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH09196057A
公开(公告)日：1997-07-29
申请号：JP966396
申请日：1996-01-24
申请人： TOSHIBA CORP
发明人： FUKUSHIMA HISASHI , ANDO MASATOSHI , ITO KOJI , TAKAHASHI YUTAKA
IPC分类号： F16C17/04 , B21D53/10 , F16C17/06
摘要： PROBLEM TO BE SOLVED: To prevent the separation of sliding material while being simple in structure and facilitating manufacture by forming a sliding material fixing layer of a wire net formed by fixing the intersection of each wire material arranged with holes longitudinally and laterally, and fixing this sliding material fixing layer to a base metal. SOLUTION: A pad 1 has sliding material 11 formed of a tetrafluoroethylene material with glass fiber, molybdenum disulfide, and the like filled therein as the bearing sliding surface, and a sliding material fixing layer 14 formed of a wire net 21 is mounted under the sliding material 11 sand fixed to a base material 5 by diffused junction. The sliding material 11 is hot-pressed at the high temperature of about 300 deg.C or more and filled in the space of the sliding material fixing layer 14 to make the binding force of the base metal 5 and sliding material fixing layer 14 firm. The wire net 21 is formed by braiding a wire in grated shape, and the intersections of wire material are diffusedly jointed to each other and diffusedly jointed to the base metal 5 by diffused junction with hot pressing in vacuum. The separation or the like of the sliding material is not therefore generated during operation and at the time of start and stop, so that stable operation can be performed. In addition, structure is simple, and manufacture is facilitated so as to be able to shorten a manufacturing period and to reduce cost.

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