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1. 发明专利

JPH08254585A PRIMARY COOLANT SYSTEM APPARATUS OF FAST REACTOR 失效
公开(公告)号：JPH08254585A
公开(公告)日：1996-10-01
申请号：JP5887095
申请日：1995-03-17
申请人： TOKYO ELECTRIC POWER CO , TOSHIBA CORP
发明人： KUROKI TOSHITAKA , OGURA KENJI , NAGAOKA KAZUHITO
IPC分类号： G21C1/02 , B82B1/00 , G21C15/02
摘要： PURPOSE: To provide and primary coolant system component of fast reactor capable of small-sizing the whole facility of fast reactor and preventing gas carry-under in the primary coolant. CONSTITUTION: Inside of a vertical cylinder container vessel 2 with closed upper and lower two ends, a partition wall 5 partitioning upper plenum 3 and lower plenum 4 is provided, and at a part of the container vessel 2, an inlet piping and an outlet piping of primary coolant are penetrated through the upper plenum 3 and the lower plenum 4. An inlet 11 and an outlet 12 of primary coolant path open to the upper plenum 3 and the lower plenum 4, respectively in the radial center part of the partition wall 5. An intermediate heat exchanger 6 wherein a secondary coolant flow path connects an inflow piping 13 and an outflow piping 14 for secondary coolant, is provided. In the annular part of the partition wall 5 between the container vessel 2 and the intermediate heat exchanger 6, a plurality of main circulation pumps 8 driving the primary coolant are placed with intervals on almost the same circumference.

2. 发明专利

JPH08189980A LOOP-TYPE FAST REACTOR 失效
公开(公告)号：JPH08189980A
公开(公告)日：1996-07-23
申请号：JP238495
申请日：1995-01-11
申请人： TOSHIBA CORP
发明人： OGURA KENJI , KIMURA KIMITAKA , JINBO MASAKAZU , HIRAYAMA HIROSHI , TAGUCHI JUNZO , HIRATA KENSHO , OZAKI KENJI , MARUYAMA SHIGEKI
IPC分类号： G21C1/02 , G21D5/12
摘要： PURPOSE: To prevent a cover gas from being entrained from a free liquid surface during steady driving, and securely keep a core and structural materials sound. CONSTITUTION: An intermediate heat exchanger 8 is set in an intermediate gas exchanger vessel 7. A horizontal diaphragm 9 is set at the lower part of the intermediate heat exchanger 8. A flow shrouding 14 penetrating a lid 12 is arranged to cover an upper outer peripheral face of the intermediate heat exchanger 8. A horizontal plate 32 with many holes is disposed to cover an outer peripheral face of a lower end part of the flow shrouding 14. A cylindrical body 33 penetrates the horizontal plate 32 and diaphragm 9. A liquid level penetration device 20 is inserted in the cylindrical body 33. An upper end of the cylindrical body 33 surrounding the device 20 is opened to be higher than a liquid level 15 of a liquid metal during normal driving and lower than a liquid level 16 at the stopping time. A lower end of the cylindrical body 33 is opened in a lower plenum area of the diaphragm 9. The horizontal plate 32 restricts the oscillation of the liquid level and entrainment of a gas, and the cylindrical body 33 reduces the thermal stress into the intermediate heat exchanger 8.

3. 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.

4. 发明专利

JPH0313795A INTERMEDIATE HEAT EXCHANGER 失效
公开(公告)号：JPH0313795A
公开(公告)日：1991-01-22
申请号：JP14663989
申请日：1989-06-12
申请人： TOSHIBA CORP
发明人： OGURA KENJI
IPC分类号： F28D7/02
摘要： PURPOSE:To equalize the temperature distribution of an upper tube plate at the time of decay-heat removal operation by forming an inside bypass-flow preventive plate in length up to a baffle plate from the level of a primary coolant and an outside bypass-flow preventive plate in length up to the baffle plate from the lower end of a primary-coolant inflow window hole. CONSTITUTION:An inside bypass-flow preventive plate 30 is erected up to a section upper than a free level 34, and has length connected to baffle plates 31, and an outside bypass-flow preventive plate 29 has length up to the baffle plates 31 from a window hole 13. Bellows 32 are mounted outside the preventive plate 29, and the leakage of a primary coolant between the bellows and an outer drum 6 is obviated. The primary coolant flowing into the outer drum 6 from the window hole 13 flows down only in a region, in which there are helical heat transfer tubes 17, and flows into heat transfer tubes 14 through an upper tube plate 16 from the baffle plates 31. The coolant flowing down in the clearances of the heat transfer tubes 17 by the baffle plates 31 and the coolant flowing near the heat transfer tubes 17 are mixed before they reach to the upper tube plate 16. Accordingly, temperature distribution in the radial direction in the upper tube plate 16 is equalized.

5. 发明专利

JPH01291195A TANK TYPE FAST BREEDER 失效
公开(公告)号：JPH01291195A
公开(公告)日：1989-11-22
申请号：JP11918688
申请日：1988-05-18
申请人： TOSHIBA CORP
发明人： OGURA KENJI
IPC分类号： G21C1/02
摘要： PURPOSE:To reduce the entrainment of cover gas caused by the generation of an unstable eddy by placing plural intermediate heat exchangers, and plural main circulating pumps in a nuclear reactor container, so as to become a rotation symmetry in the peripheral direction. CONSTITUTION:In a nuclear reactor container 1, plural intermediate heat exchangers 2a-2d are placed in a specular surface symmetry around a rotary plug 16. Also, main circulating pumps 3a-3d are provided by two sets each on both sides of the heat exchangers 2b, 2d. As a result, the arrangement constitution of the heat exchangers 2a-2d and the pumps 3a-3d in the furnace forms a 180 deg. rotation symmetry shape. According to such a constitution, since a coolant fluid place in the furnace does not have a specular surface symmetric face, a prescribed shape is given, and an unstable fluid area is curtailed. As a result, the entrainment of cover gas caused by the generation of an unstable eddy and an unstable free liquid level oscillation can be reduced.

6. 发明专利

JPS6273197A FAST BREEDER REACTOR 失效
公开(公告)号：JPS6273197A
公开(公告)日：1987-04-03
申请号：JP21212185
申请日：1985-09-27
申请人： TOSHIBA CORP
发明人： OGURA KENJI
IPC分类号： G21C15/02 , G21C1/02 , G21C13/00

7. 发明专利

JPH08105987A INTERMEDIATE HEAT EXCHANGER DEVICE FOR FAST REACTOR 失效
公开(公告)号：JPH08105987A
公开(公告)日：1996-04-23
申请号：JP24118394
申请日：1994-10-05
申请人： TOSHIBA CORP
发明人： JINBO MASAKAZU , KIMURA KIMITAKA , OGURA KENJI , HIRAYAMA HIROSHI , MARUYAMA SHIGEKI , OTSUBO TORU , HIRATA KENSHO
IPC分类号： G21C1/02 , G21D1/00
摘要： PURPOSE: To restrain a liquid level fluctuation or rippling in an intermediate heat exchanger vessel, prevent the entrainment of cover gases and reduce thermal stress. CONSTITUTION: A division 9 is horizontally laid in an intermediate heat exchanger vessel 7, and an intermediate heat exchanger 8 is erected on the division 9. A flow shroud 14 is provided, so as to enclose the upper section of the intermediate heat exchanger 8 and a barrel 31 is suspended from a cover 12, so as to surround the outer side of the shroud 14. Also, the lower end of the barrel 31 is fitted with a plate 32 directed outside, and a cylinder 33 is erected on the center of the plate 32. In addition, hot leg piping 6 is inserted in the cylinder 33 through the cover 12. The lower side of the division 9 forms a low temperature plenum 10. Furthermore, secondary sodium piping 17 is connected to the upper end of the intermediate heat exchanger 8.

8. 发明专利

JPH0887490A DEVICE AND METHOD FOR SOLVING DIFFERENTIAL EQUATION 失效
公开(公告)号：JPH0887490A
公开(公告)日：1996-04-02
申请号：JP24995294
申请日：1994-09-19
申请人： TOSHIBA CORP
发明人： TANAKA NOBUATSU , OGURA KENJI
IPC分类号： G06F17/14 , G06F17/13
摘要： PURPOSE: To easily solve differential equations over a wide range by providing the device, which makes a differential equation discrete and solves specific simultaneous linear equations represented with vectors, with an input/output means, a control processor, etc., and finding the solution by a specific means. CONSTITUTION: The device which makes the differential equation discrete and solves the simultaneous equations Ax=b (A: matrix showing the coefficients of the simultaneous linear equations, x: vectors showing quantities to be found, b: vectors showing known quantities) represented with the vectors has the input/ output means 1 and 3, the control processor 2, a memory 4, and a product sum arithmetic means 5. The control processor 2 takes a filter coefficient (h) out of the memory, the product sum arithmetic means 5 generates an incomplete discrete wavelet conversion matraix W and its transposed matrix WT and performs conversion into WAWTP=q(x=WTP and q=wb) by using the incomplete discrete wavelet conversion matrix W and transposed matrix WT, and the arithmetic means 5 finds the vectors (p) and (q) to find the vector (x).

9. 发明专利

JPS62190485A FAST BREEDING TYPE REACTOR 失效
公开(公告)号：JPS62190485A
公开(公告)日：1987-08-20
申请号：JP3182686
申请日：1986-02-18
申请人： TOSHIBA CORP
发明人： OGURA KENJI
IPC分类号： G21C5/06 , G21C5/10

10. 发明专利

JPS61207986A TANK TYPE FAST BREEDER REACTOR 失效
公开(公告)号：JPS61207986A
公开(公告)日：1986-09-16
申请号：JP4748785
申请日：1985-03-12
申请人： TOSHIBA CORP
发明人： OGURA KENJI
IPC分类号： G21C1/02

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