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1. 发明专利

JPH06174882A FAT BREEDER REACTOR 失效
公开(公告)号：JPH06174882A
公开(公告)日：1994-06-24
申请号：JP32432292
申请日：1992-12-03
申请人： CENTRAL RES INST ELECT , TOSHIBA CORP
发明人： HATTORI SADAO , KASAI SHIGEO , IIDA NORIHIKO
IPC分类号： G21C5/10 , G21C1/02 , G21C11/06
摘要： PURPOSE:To provide a small fast breeder reactor that reduces the amount of heat dissipated outside the reactor and the amount of irradiation of neutrons, can be accommodated by a simple, inexpensive shield structure and a cooling facility, and has high heat utilization efficiency and a long life. CONSTITUTION:A reactor core 2 is provided and a core barrel 3 is provided around the outer periphery of the reactor core 2 and a reflector 4 is provided around the outer periphery of the core barrel 3. The core barrel 3 is supported to the outer periphery of the reflector 4 by means of a support member and a bulkhead 6 constituting the inside wall of a coolant passage 5 for primary coolant is provided and a neutron shield 8 is provided within the coolant passage 5. A reactor vessel 7 constituting the outside wall of the coolant passage 5 is provided around the outer periphery of the neutron shield 8 and a guard vessel 9 is provided around the outer periphery of the reactor vessel 7.

2. 发明专利

JPH06148367A NUCLEAR REACTOR 失效
公开(公告)号：JPH06148367A
公开(公告)日：1994-05-27
申请号：JP29347392
申请日：1992-10-30
申请人： CENTRAL RES INST ELECT , TOSHIBA CORP
发明人： HATTORI SADAO , SATO MORIHIKO
IPC分类号： G21C1/02
摘要： PURPOSE:To contrive large enlargement of nuclear reactor output by equipping a plurality of reactor core vessels housing independent reactor cores in a nuclear reactor vessel and an intermediate cooler for heat-exchanging a primary coolant for a secondary coolant. CONSTITUTION:When a nuclear reactor is started, a primary coolant 26 is supplied to a reactor core vessel 31 through an inflow nozzle 36 from a high pressure plenum 29 in the lower part of a nuclear reactor vessel 25. Heating is performed due to nuclear reaction heat at the time when the coolant 26 passes reactor cores 35 in each vessel 31 and it is discharged from an outflow port 37 to an upper plenum 28. A primary coolant of high temperature guided to a plenum 28 is guided to an intermediate heat exchanger 45 from an inflow port 48 of an intermediate cooler 32 and passes through the tube bundle of the heat exchanger 45. At the time the primary coolant is heat-exchanged for the secondary coolant and cooled therewith. The secondary coolant heated with the exchanger 45 is transmitted to a steam generator 51 through an inflow and outflow tube 52 and feed water is heated.

3. 发明专利

JPH05323083A REFLECTOR CONTROL REACTOR 失效
公开(公告)号：JPH05323083A
公开(公告)日：1993-12-07
申请号：JP12766292
申请日：1992-05-20
申请人： TOSHIBA CORP , CENTRAL RES INST ELECT
发明人： YOKOYAMA TSUGIO , KASAI SHIGEO , HATTORI SADAO
IPC分类号： G21C7/28
摘要： PURPOSE:To avoid the insertion of excess reactivity even for excess movement of neutron reflectors over a design set value. CONSTITUTION:Around a core 1, neutron reflector 12 is placed. This neutron reflector 12 is constituted of two semicylindrical unit reflectors 12a, 12b. These unit reflectors 12a, 12b are moved separately with drive devices 15 and 16. By this, neutron leak rate out of the core 1 increases compared with the case both unit reflectors are moved simultaneously.

4. 发明专利

JPH03128481A DOUBLE TANK TYPE NUCLEAR REACTOR 失效
公开(公告)号：JPH03128481A
公开(公告)日：1991-05-31
申请号：JP6543189
申请日：1989-03-17
申请人： CENTRAL RES INST ELECT , TOSHIBA CORP
发明人： HATTORI SADAO , SATO MORIHIKO
IPC分类号： G21C1/02 , G21C5/10 , G21C13/073
摘要： PURPOSE:To simplify the structure and improve the maintainability and the approachability of an operator in maintenance by circulating a primary cooling material and a secondary cooling material without using cooling material tubing. CONSTITUTION:The primary cooling material which is heated by a reactor core flows in an intermediate heat exchanger 32 through a primary high temperature pool 29 and exchanges heat with the secondary cooling material in the exchanger 32 and is sent to a primary low temperature pool 30. The primary cooling material in the pool 30 is sucked by a primary cooling material electromagnetic pump 3 and sent to the reactor core 27. The secondary cooling material heated in the exchanger 32, on the other hand, is discharged from the upper end of the exchanger 32 to a secondary high temperature pool 39 to flow in a steam generator 41 and exchange heat with water from a feed water pipe 4. Superheated steam produced by the heat exchanging is sent to a steam turbine through a superheated steam tube 43 and the secondary cooling material which drops in temperature by the heat exchanging is sent out to a secondary low temperature pool 40. The secondary cooling material in the pool 40 is sucked by a secondary cooling material electromagnetic pump 36 through a through holes 37 and sent in the exchanger 32.

5. 发明专利

JPH0749391A NUCLEAR REACTOR 失效
公开(公告)号：JPH0749391A
公开(公告)日：1995-02-21
申请号：JP19371393
申请日：1993-08-04
申请人： TOSHIBA CORP , CENTRAL RES INST ELECT
发明人： KASAI SHIGEO , OGURA KENJI , NAKAMURA HIROSHI , HATTORI SADAO
IPC分类号： G21C1/02
摘要： PURPOSE:To obtain a high output nuclear reactor which can be operated for a long term without requiring the replacement of fuel while sustaining a negative degree of void reaction. CONSTITUTION:One or a plurality of sets of intermediate cooler 35 are disposed in the center within one primary coolant container 21. Six sets of reactor core vessels 28 are disposed on the outer periphery of the intermediate cooler 35. The intermediate cooler 35 is provided with an intermediate heat-exchanger 40 and a primary electromagnetic pump 41. The core vessel 28 is provided with a reactor core 32 and a reflector 33. A neutron shielding body 43 is disposed on the outer periphery of the core vessel 28 in order to prevent nuclear interference of the reactor cores 32.

6. 发明专利

JPH06174884A FAST BREEDER REACTOR 失效
公开(公告)号：JPH06174884A
公开(公告)日：1994-06-24
申请号：JP32447192
申请日：1992-12-03
申请人： TOSHIBA CORP , CENTRAL RES INST ELECT
发明人： IIJIMA TORU , KASAI SHIGEO , NAKAMURA HIROSHI , HATTORI SADAO
IPC分类号： G21C13/024 , G21C1/02 , G21C15/12
摘要： PURPOSE:To prevent the temperature of the structural members of a reactor containment structure from rising in excess and to provide a fast breeder reactor of simple structure. CONSTITUTION:A high-temperature air passage H and a low-temperature air passage L are formed which are communicated to the inside and outside of a container air cooling cylinder 11, respectively. A reactor support ring 8 is provided with a through hole 13 and disposed at the air inlet portion La of the low-temperature air passage L and an air exhaust means 12 which passes through the container air cooling cylinder 11 and the low-temperature air passage L to exhaust high-temperature air outside is provided at the air exhaust portion Ha of the high-temperature air passage H.

7. 发明专利

JPH0651082A NUCLEAR REACTOR OF REFLECTOR CONTROL TYPE 失效
公开(公告)号：JPH0651082A
公开(公告)日：1994-02-25
申请号：JP20389692
申请日：1992-07-30
申请人： TOSHIBA CORP , CENTRAL RES INST ELECT
发明人： AOKI KATSUTADA , KAWASHIMA MASATOSHI , YOKOYAMA TSUGIO , KASAI SHIGEO , HATTORI SADAO
IPC分类号： G21C7/28
摘要： PURPOSE:To enhance the reaction degree controlling ability of a neutron reflecting body without prolonging the length of the neutron reflecting body. CONSTITUTION:A neutron reflecting body 9 is installed outside of the core 2 of a nuclear reactor immersed in a cooling material 4 and moved up and down so as to adjust the leak of neutrons from the core 2, and thereby the reaction degree at the core 2 is controlled. In this nuclear reactor of reflecting body control type, the core in its portion positioned above the neutron reflecting body 9 is surrounded by a substance 24 whose neutron reflecting ability is inferior to the cooling material 4.

8. 发明专利

JPH075288A REACTOR REFUELING MACHINE 失效
公开(公告)号：JPH075288A
公开(公告)日：1995-01-10
申请号：JP14616293
申请日：1993-06-17
申请人： CENTRAL RES INST ELECT , TOSHIBA CORP
发明人： HATTORI SADAO , MASUDA YOICHI
IPC分类号： G21C19/18
摘要： PURPOSE:To shorten the reactor outage period for refueling. CONSTITUTION:At the upper part of a reactor vessel 2, a guide cylinder 4 and a fuel insertion and withdrawal device 5 is fixed and a refueling machine 10 is fixed in the guide cylinder 4. The refueling machine 10 is provided with a relay mechanism 11 to hold a pot 12, a gripper mechanism 13 to grasp a fuel assembly 3, a winder 14 to hung up the gripper mechanism with a wire rope 17, art arm 15 to move the gripper mechanism 13 to the core radius direction by moving the wire rope 17 and a rotation device to rotate the whole device and move the gripper mechanism 13 to the core circumferential direction. A spent fuel assembly 3 is contained in the pot 12 and taken out of the reactor in this state.

9. 发明专利

JPH0618685A FAST BREEDER 失效
公开(公告)号：JPH0618685A
公开(公告)日：1994-01-28
申请号：JP17451292
申请日：1992-07-01
申请人： TOSHIBA CORP , CENTRAL RES INST ELECT
发明人： IIDA NORIHIKO , HATTORI SADAO
IPC分类号： G21C1/02 , G21C7/26
摘要： PURPOSE:To simplify a fuel exchange equipment by a method wherein a measure is taken to prevent the impairing of economy improving safety with a limited output scale of a nuclear reactor while none of a control rod and a drive section of a primary pump or the like is set in a coolant and moreover an exchanging interval of a core fuel is extended. CONSTITUTION:A reflector 26 which controls the combustion of a core 21 with a vertical movement is arranged outside the core 21, an intermediate heat exchanger 23 above the core 21 and an electromagnetic pump 22 above or below the core 21 separately to form a micromodule 27a. A plurality of the micromodules 27a are inserted and set into a coolant pool.

10. 发明专利

JPH06174881A DRIVE MECHANIM FOR NEUTRON ABORBING ROD 失效
公开(公告)号：JPH06174881A
公开(公告)日：1994-06-24
申请号：JP32440292
申请日：1992-12-03
申请人： CENTRAL RES INST ELECT , TOSHIBA CORP
发明人： HATTORI SADAO , MATSUDA JUNKO , KASAI SHIGEO
IPC分类号： G21C9/02 , G21C7/14
摘要： PURPOSE:To eliminate the possibility of a neutron absorbing rod being extracted from a reactor core by mistake so as to enhance safety by preventing the neutron absorbing rod from being attracted to a neutron-absorbing rod holding rod by an electromagnet before the temperature of a coolant reaches a predetermined value. CONSTITUTION:An electromagnet 34 comprising a coil 32 and an iron core 33 is mounted at the lower end of a neutron-absorbing rod holding rod 31 located above a neutron absorbing rod 30 for insertion into a reactor core. A guide 35 is provided to pass through the holding rod 31 and the electromagnet 34. The lower end of the guide 35 is formed with an acute cross section to abut to a recess formed in the upper surface of the absorbing rod 30. If a coolant is heated to 350 deg.C at the startup of the reactor core, the coefficient of thermal expansion of the holding rod 31 is made greater than that of the guide 35 by changing the materials from which the rod and the guide are made, so that the distance between the lower ends of the electromagnet 34 and the guide 35 decreases. Therefore, the absorbing rod 30 is not attracted to the electromagnet 34 before the temperature of the coolant reaches a predetermined value, and so the possibility of extracting the absorbing rod 30 from the core by mistake is eliminated and safety is enhanced.

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