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1. 发明专利

JP2003254744A TRAVELING CONDITION DETECTOR FOR SUBMERGED CONVEYING MECHANISM 审中-公开
公开(公告)号：JP2003254744A
公开(公告)日：2003-09-10
申请号：JP2002057525
申请日：2002-03-04
申请人： FUJI ELECTRIC CO LTD
发明人： TAKAGI AKIRA , OZAKI HIROSHI
IPC分类号： G01B21/22
摘要： PROBLEM TO BE SOLVED: To provide a traveling condition detector for a submerged conveying mechanism capable of detecting a traveling condition independently of a driving control system such as a traveling device. SOLUTION: In this traveling condition detector for a submerged conveying mechanism, a central processing device 7 reads a constant speed condition angle value and an acceleration/deceleration stopping condition angle value stored in a storage device 9. If an angle value from an angle detector 6 is below a constant speed condition angle value, it is determined that the traveling body 2 is shifted to a constant speed condition. If the angle value is above the acceleration/deceleration stopping condition angle value, it is determined that the constant speed condition of the traveling body 2 is finished. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2000227489A REACTOR CORE SUPPORT DEVICE OF SODIUM COOLING TYPE FAST NEUTRON REACTOR 失效
公开(公告)号：JP2000227489A
公开(公告)日：2000-08-15
申请号：JP2862499
申请日：1999-02-05
申请人： JAPAN NUCLEAR CYCLE DEV INST , FUJI ELECTRIC CO LTD
发明人： TOZAWA KATSUHIRO , HIROKI ATSUSHI , OZAKI HIROSHI
IPC分类号： G21C5/10 , G21C3/28 , G21C3/322 , G21C3/33 , G21C5/08 , G21C15/02
摘要： PROBLEM TO BE SOLVED: To obtain a reactor core support device for restricting so that an invalid flow of a primary coolant for damaging reactor core cooling performance is reduced by shortening a gap between reactor core forming elements at the time of a reactor operation, and that the gap is widened up to a range required for a fuel replacement work at the time of fuel replacement, relative to 'the open type reactor core' of a ductless type fuel assembly. SOLUTION: Vertical and horizontal loads of a reactor core are supported allottedly by a lower-part reactor core support structure combined with a constraining band and a side-part reactor core support structure. The lower-part reactor core support structure 8 is composed of connecting tubes 16 arranged dispersedly on core support plates 8b, 8c for supporting uprightly reactor core forming elements 15 respectively, and the constraining band 17 for constraining a bundle of the connecting tubes 16 from the circumferential side. The connecting tubes 16 are formed by having external shapes of hexagons and having key ways 16a on the peripheral faces, and fitted loosely with the core support plates 8b, 8c, and connected mutually so as to constrain each other. Besides, the bundle of the connecting tubes 16 is constrained from the circumferential side by the constraining band 17 having an equivalent thermal expansion coefficient adjusted beforehand so as to be smaller than the thermal expansion coefficient of the reactor core forming elements 15 through a load transmitting block 18 and a presser plate 19.

3. 发明专利

JP2559263B2 失效
公开(公告)号：JP2559263B2
公开(公告)日：1996-12-04
申请号：JP28415688
申请日：1988-11-10
申请人： FUJI ELECTRIC CO LTD
发明人： OZAKI HIROSHI
IPC分类号： G21C19/02 , G21C19/18 , G21C19/19

4. 发明专利

JP2520008B2 失效
公开(公告)号：JP2520008B2
公开(公告)日：1996-07-31
申请号：JP7154089
申请日：1989-03-23
申请人： FUJI ELECTRIC CO LTD
发明人： TOZAWA KATSUHIRO , OZAKI HIROSHI
IPC分类号： G21C19/19

5. 发明专利

JPH0249194A DEVICE FOR PREVENTING ERRONEOUS TAKING OUT OF CORE CONSTITUTING ELEMENT OF FAST BREEDER 失效
公开(公告)号：JPH0249194A
公开(公告)日：1990-02-19
申请号：JP20096388
申请日：1988-08-11
申请人： FUJI ELECTRIC CO LTD
发明人： OZAKI HIROSHI
IPC分类号： G21C19/02 , G21C19/19
摘要： PURPOSE:To identify a core constituting element in a short period of time by detecting the patterns of the core constituting element by an electronic scanning type ultrasonic probe of a gripper end part in the state of gripping the core constituting element by the gripper of a refueling machine. CONSTITUTION:The annular patterns 11 which are different with each of the kinds or fuel cycles of the core constituting element are inscribed to the top end face of the core constituting element 1 and the electronic scanning type ultrasonic probe 10 facing the patterns 11 is provided to the end of the gripper 2 of the refueling machine. The patterns 11 are detected by scanning the probe 10 in a radial direction when the core constituting element 1 is gripped by the gripper 2. The kind of the core constituting element is immediately identified in this way.

6. 发明专利

JPH01174997A OFFSET ARM TYPE FUEL CHANGER FOR NUCLEAR REACTOR 失效
公开(公告)号：JPH01174997A
公开(公告)日：1989-07-11
申请号：JP33538687
申请日：1987-12-29
申请人： FUJI ELECTRIC CO LTD
发明人： OZAKI HIROSHI
IPC分类号： G21C19/19 , B25J17/00 , F16H21/10
摘要： PURPOSE:To achieve a compactization, by forming flanges at both ends of each arm plate in such a manner as to extends on the opposite side each other with a reinforcing rib plate as border and coupled to a expansion driving mechanism and a hold down tube separately on the side of the body shell. CONSTITUTION:When an offset arm 5 extends horizontally to fold the arm 5 at a fuel change position where a hold down tube 6 is pulled out to the side of a body shell 4, on the side of the body shell 4, a ball screw 9 and a boss 10 as arm expansion driving mechanism are housed in a U-shaped groove formed between a reinforcing rib plate 53 and right and left arm plates 51 and 52 on the side of a flange 54 at the arm 5 and one tube 6 is housed in a U-shaped groove on the side of a flange 55 formed on the opposite side separated with the rib plate 53. That is, in the folding of the arm 5, the tube 6 and the arm 5 are pulled sufficiently without interference to be housed almost in the body shell 4. This enables compact housing so as to reduce the shaft diameter dimensions of a fuel changer as a whole in this states.

7. 发明专利

JPH04110700A FUEL EXCHANGING AND HANDLING DEVICE OF FAST BREEDER REACTOR 失效
公开(公告)号：JPH04110700A
公开(公告)日：1992-04-13
申请号：JP22892090
申请日：1990-08-30
申请人： FUJI ELECTRIC CO LTD
发明人： OZAKI HIROSHI
IPC分类号： G21C19/19
摘要： PURPOSE:To make a diameter of nuclear reactor vessel much compact by transferring spent fuels to a fuel bringing-out position inside the reactor from an incore fuel storage rack and also by bringing out the fuel to outside the reactor by a fuel handling machine. CONSTITUTION:During shut down period of the nuclear reactor, spent fuels are brought out of a reactor core 5 via an upper structure 6 of reactor core and a telescopic arm typed fuel exchanging machine 1, in order to move the fuels to an incore fuel storage rack 2, and also new fuels stored in the incore fuel storage rack 2, are brought out of the incore fuel storage rack 2 via the telescopic arm typed fuel exchanging machine 1 and the upper structure 6 of reactor core, in order to insert the new fuels into the reactor core 5. The spent fuels that are transferred from the reactor core 5 to the incore fuel storage rack 2 during the shut down period of the fast breeder reactor, are transferred again from the incore fuel storage rack 2 to a fuel bringing-out position 11 inside the reactor, from the incore fuel storage rack 2, by the telescopic arm typed fuel exchanging machine 1, and then are brought out to outside the reactor by a fuel handling machine 10. The fuel handling machine 10 also transfers the new fuels to an incore fuel bringing-out position 14 from the incore fuel storage rack 2 and the telescopic arm typed fuel exchanging machine 1 transfers the new fuels to the incore fuel storage rack 2.

8. 发明专利

JPS63150690A UPPER STRUCTURE OF NUCLEAR REACTOR 失效
公开(公告)号：JPS63150690A
公开(公告)日：1988-06-23
申请号：JP29789286
申请日：1986-12-15
申请人： FUJI ELECTRIC CO LTD
发明人： OZAKI HIROSHI
IPC分类号： G21C19/19 , G21C7/14 , G21C13/06 , G21C13/073

9. 发明专利

JP2003121587A FUEL TREATMENT FACILITY OF SODIUM COOLED FAST REACTOR 审中-公开
公开(公告)号：JP2003121587A
公开(公告)日：2003-04-23
申请号：JP2001312550
申请日：2001-10-10
申请人： FUJI ELECTRIC CO LTD
发明人： TOZAWA KATSUHIRO , OZAKI HIROSHI
IPC分类号： G21C19/18 , G21C19/06 , G21C19/07
摘要： PROBLEM TO BE SOLVED: To immediately conduct sodium cleaning and store a spent fuel taken out of a reactor in a water pool, without waiting for decay heat reduction in sodium-filled fuel storage equipment. SOLUTION: Dry cleaning by gas blow is applied to spent fuel 7 for removing sodium by cleaning, and the spent fuel 7 is inserted in a sodium-filled preheating tank 11 for preheating required for the dry washing, which is also used for temporary storage of the spent fuel 7 transported from a reactor 1 using a fuel treatment machine 2. In this manner, in spite of the omission the sodium- filled fuel storage equipment, fuel transpiration with the fuel treatment machine 2 is limited between the reactor 1 and the preheating tank 11, and refueling work with the fuel treatment machine 2 can be done, in parallel with the fuel washing work and so that the fuel cleaning time will not be added to the refueling time, which will not be extended.

10. 发明专利

JP2003107188A REFUELING DEVICE FOR NUCLEAR FACILITY 审中-公开
公开(公告)号：JP2003107188A
公开(公告)日：2003-04-09
申请号：JP2001305125
申请日：2001-10-01
申请人： FUJI ELECTRIC CO LTD , JAPAN ATOMIC POWER
发明人： OZAKI HIROSHI , ICHII JIRO , YOSHIMURA TETSUJI , KOMENO TOSHIHIRO
IPC分类号： G21C19/18
摘要： PROBLEM TO BE SOLVED: To smoothly load a fuel assembly suspended and transferred by a refueling device into a core. SOLUTION: A fuel loading guide 11 covering, like a sheath, the outer side of the fuel assembly 4 suspended by a grip part 5 is attached so as to axially slide to the grip part 5 of a vertically moving mechanism 3 in the fuel exchanging device. When the grip part 5 suspended and supported by a wire 7 is lowered to a core designated position, the fuel loading guide 11 is lowered, too, and it is sat on an adjacent fuel assembly. Following this, when the grip part 5 is lowered, the fuel assembly 4 is inserted into the core while being guided by the fuel loading guide 11. Even though the long fuel assembly 4 suspended by the grip 5 is liable to swing, swinging is suppressed by providing the fuel loading guide 11, and since the fuel loading guide 11 is positioned by using the adjacent fuel assembly, positioning accuracy is improved and loading of the fuel assembly is speeded up and facilitated.

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