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1. 发明专利

JPS62169087A CONTROL-ROD CLUSTER TREATER 失效
公开(公告)号：JPS62169087A
公开(公告)日：1987-07-25
申请号：JP995986
申请日：1986-01-22
申请人： HOKKAIDO ELECTRIC POWER , KANSAI ELECTRIC POWER CO , SHIKOKU ELEC POWER , KYUSHU ELECTRIC POWER , JAPAN ATOMIC POWER , MITSUBISHI HEAVY IND LTD
发明人： KONISHI MASAHIKO , SUZUKI HIDEAKI , TAIRA SHINGO
IPC分类号： G21C19/02 , G21C19/00 , G21C19/20

2. 发明专利

JPS62121396A HANGING TOOL FOR STRUCTURE IN NUCLEAR REACTOR 失效
公开(公告)号：JPS62121396A
公开(公告)日：1987-06-02
申请号：JP25974885
申请日：1985-11-21
申请人： HOKKAIDO ELECTRIC POWER , KANSAI ELECTRIC POWER CO , SHIKOKU ELEC POWER , KYUSHU ELECTRIC POWER , JAPAN ATOMIC POWER , MITSUBISHI HEAVY IND LTD
发明人： KONISHI MASAHIKO , SUZUKI HIDEAKI , TAIRA SHINGO
IPC分类号： G21C19/19

3. 发明专利

JPH10319165A MAGNETIC JACK TYPE CONTROL ROD DRIVER 失效
公开(公告)号：JPH10319165A
公开(公告)日：1998-12-04
申请号：JP12993697
申请日：1997-05-20
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAWAGUCHI AKIHIRO , TAIRA SHINGO , MURAKAMI YOICHIRO , TANAKA TAKESHI
IPC分类号： G21C7/14
摘要： PROBLEM TO BE SOLVED: To prevent the delay of operation due to the return delay of movable latch support pipe in a magnetic jack type control rod driver of a pressurized water reactor. SOLUTION: In a magnetic jack type control driver of a pressurized water reactor 30, a fixed grasping electrode 31 is provided surrounding a drive shaft 1 corresponding to a holding latch electromagnetic coil, a movable latch support pipe 13 supporting a movable latch mechanism 19 is provided surrounding the drive shaft 1 above the fixed grasping electrode 31, a movable latch stopper plunger 33 is provided to the movable latch support pipe 13 corresponding to the movable latch electromagnetic coil, an annular groove is formed in the upper damper space of the fixed grasping electrode 31 accepting the lower end of the movable latch support pipe 13 and a draw mitigation groove is formed around the annular extension part foamed at the lower end of the movable latch stopper plunger 33 corresponding to the annular groove.

4. 发明专利

JPH10104381A DRIVE SHAFT HOUSING OF CONTROL ROD DRIVE FOR PRESSURIZED WATER REACTOR 失效
公开(公告)号：JPH10104381A
公开(公告)日：1998-04-24
申请号：JP25681296
申请日：1996-09-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAIRA SHINGO , SAEKI TARO , HINOKI KATSUYUKI
IPC分类号： G21C7/10
摘要： PROBLEM TO BE SOLVED: To easily fabricate the title housing without generating stress corrosion cracking and the like by forming in one the upper end part of drive shaft housing for closing the upper end of inner space with the main body. SOLUTION: Outside the middle part of drive shaft housing 11, a latch housing containing a latch grasping the drive shaft and a coil housing for fixing electromagnetic coil for driving the latch to elevate are fixed. The drive shaft in the drive shaft housing 11 moves up and down the control rod cluster in a reactor vessel. The head 11b of the upper end of the drive shaft housing 11 is formed in one with the main body 11a, the inner space 17 is closed with hole stopping work 17a and an extension rod 21 is connected to the head 11b with a bolt 19. In this manner, leakage of coolant from the space 17 connected to the high temperature/high pressure space in the reactor vessel at the head 11b is prevented. Also by forming the head 11b, precision fabrication is avoided and a stable closing part can be formed.

5. 发明专利

JPH095483A DRIVE SHAFT REMOVING TOOL FOR REACTOR CONTROL ROD 失效
公开(公告)号：JPH095483A
公开(公告)日：1997-01-10
申请号：JP14907995
申请日：1995-06-15
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKADA YOSHINORI , KURIMURA TSUTOMU , TAIRA SHINGO , MOCHIZUKI HIROSHI
IPC分类号： G21C19/02
摘要： PURPOSE: To smoothly remove a control rod drive shaft from a reactor control rod regardless of the biting of foreign matter or the fixing by seisure. CONSTITUTION: The removing tool 60 of a drive shaft is constituted of a skeleton structural body, a grip fixing mechanism 90, and a removing mechanism 100. The skeleton structural body is constituted of a hoisting handle 61, a support plate 65, a hollow support tube 71, a cylinder support plate 77, an upper support barrel 73, a lower support barrel 75, a support tube 81, and a housing. The grip fixing mechanism 90 is constituted of a grip finger, an action sleeve, a cylinder 45, and a piston rod 91. The removing mechanism 100 is constituted of a cylinder 101, a piston rod 103, an operation shaft 107, an action shaft 115, a shaft, an action button, and a gripper. A shock load adding mechanism constituted of a hammering plate 109 and a moving grip 123 is provided on the operation shaft 107.

6. 发明专利

JPH02281141A ULTRASONIC WAVE FLAW DETECTING APPARATUS 失效
公开(公告)号：JPH02281141A
公开(公告)日：1990-11-16
申请号：JP10154389
申请日：1989-04-24
申请人： MITSUBISHI HEAVY IND LTD , SEIRYO ENG
发明人： TAIRA SHINGO , SHIOMI NOBUKATSU
IPC分类号： G01N29/04 , G01N29/26
摘要： PURPOSE:To improve flaw detecting accuracy by making the axial line of an ulrasonic- wave flaw detecting sensor agree with the normal line at a position to be inspected for a surface under inspection. CONSTITUTION:This apparatus is mainly composed of the following parts: a rotary shaft 20 which is coaxially arranged with a central line N of an outlet port nozzle 13 and can be rotated; rail plates 26 and 27 which are made to extend to outer radial direction and fixed to the shaft 20; and a sensor holding device 30 which is moved along rails 28 of the plates 26 and 28 and holds an ultrasonic-wave flaw detecting sensor 29. A fixing rod 25, a fixing plate 23, cylinders 37 and 50 associated with said fixing rod and plate and a pushing mechanism are made to function as the positioning means of the shaft 20. The rails 28 are formed so that the axial line of the sensor 29 agrees with the normal line of the surface to be inspected and the tip surface of the sensor 29 can be moved in contact with the surface to be inspected, when the shaft 20 is fixed at a specified angle. When the movement of the shaft 20 and the device 30 is controlled, the sensor 29 is moved under the state wherein the sensor is held in the normal direction of the surface to be inspected. Since the sensor 29 is held elastically with the device 30, the tip surface of the sensor is pushed to the surface to be inspected with appropriate pressure.

7. 发明专利

JPH102313A LOOSENESS TESTING DEVICE OF WHIRL STOP ROD FOR NUT 失效
公开(公告)号：JPH102313A
公开(公告)日：1998-01-06
申请号：JP15808296
申请日：1996-06-19
申请人： MITSUBISHI HEAVY IND LTD
发明人： SHINOHARA YOSHIKAZU , TAIRA SHINGO
IPC分类号： G21C13/02 , F16B31/00
摘要： PROBLEM TO BE SOLVED: To enable testing with little fluctuation and high reliability by remote operation by working an actuator at one end of a whirl-stop rod to detect load, and detecting the displacement of the whirl-stop rod. SOLUTION: A whirl stop 21 is so constructed that the frictional force between a presser plate 25 brought into contact with the upper surface of a support pin 17 by a pin 23 clearance fit in a round hole of a nut 19 and a triangular connecting member is applied to the screw surface to prevent the loosening of the nut 19. In a support device 31 of a looseness test device 30, an actuator 33 and a differential transfer displacement gauge 35 are disposed, and the actuator 33 applies load to the pin 23 through a load cell 37. If the detected load is smaller than the static frictional force between the pin 23 and the nut 19, the pin 23 is not moved, but if it exceeds, the pin is moved to the left and it is detected by the displacement gauge 35. The load value when the displacement of the pin 23 starts to be detected becomes frictional force, and if this is smaller than the initial frictional force, it is determined that there is looseness in fit between the round hole of the nut 19 and the pin 23.

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