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1. 发明专利

JPH04116395A FINE TUBE WASHING CONTROL DEVICE 失效
公开(公告)号：JPH04116395A
公开(公告)日：1992-04-16
申请号：JP23615190
申请日：1990-09-05
申请人： CHUBU ELECTRIC POWER , TOSHIBA CORP
发明人： NAKAMURA TADASHI , OTA OSAMU , HOIZUMI TATSURO , HATSUMICHI TOMOHIKO
IPC分类号： B08B9/053 , B08B9/04 , F28G1/12
摘要： PURPOSE:To improve the efficiency of washing operation and shorten the washing time by method wherein when a washing brush is inserted into a fine tube under a water jetting pressure, the output from a filter for filtering only a predetermined substance is inputted to calculate the rate of variation of pressure, compared with a set value and completion of the pass-through of the inside part of the fine tube with the washing brush is detected. CONSTITUTION:A high pressure water 5 is jetted from a water pressure gun 3, a washing brush 2 moves in a fine tube 1, and then a washing is started. Then, water pressure within the fine tube 1 is outputted as a pressure signal 11 through a pressure sensor 14 and an amplifier 15. The pressure signal is inputted to an analogue input device 16 and an adder/subtractor 17. The signal is further outputted as an output from an integrator 18, i.e., an filter output 19. As this output 19 is inputted to a differentiator 20, a gain output 22 of the result of addition of a gain 21 to a rate of variation of pressure is outputted. In a comparator 23, a set value C1 for sensing a punching-out of the washing brush 2 is pre-set and the washing brush 2 is passed through the fine tube 1, the comparator 23 detects it, a output 24 of the comparator is ON and self- holding circuit 7 is reset, a self holding signal 8 is OFF and a water jetting instruction 10 is OFF.

2. 发明专利

JPH0333651A AUTOMATIC INSPECTION APPARATUS 失效
公开(公告)号：JPH0333651A
公开(公告)日：1991-02-13
申请号：JP16691489
申请日：1989-06-30
申请人： CHUBU ELECTRIC POWER , TOSHIBA CORP
发明人： NAKAMURA TADASHI , HOIZUMI TATSURO , OTA OSAMU , TSUJI KOICHI , SHOJU MAKOTO
IPC分类号： G01N29/04 , G01N27/90 , G01N29/26 , G21C17/003
摘要： PURPOSE:To make inspection efficient and stable by automating the inspection of the heat transfer pipe of a condenser by correcting the positional shift of a probe and aligning the axial core of the probe with that of the heat transfer pipe to send the probe into the heat transfer pipe. CONSTITUTION:A probe 9 for inspecting a flaw is held by a probe gun 10 while the probe gun 10 is held by a probe inserting apparatus 11. The apparatus 11 holds the probe gun 10 so as to make said gun 10 freely movable in the radius direction but not to move the same in the axial direction by a pin 12. This mechanism 24 is made movable in a tube plate surface direction by a linear bearing 14, a guide 15 and a cylinder 16. Further, the apparatus 11 is mounted to a movable apparatus 18 by an arm 17 and the apparatus 18 is mounted to a tube plate 21 in parallel to the surface thereof through a guide 19 and clamps 20. The positional shift of the probe 9 is corrected by moving the mechanism 24 by the cylinder 16 and the axial core of the probe is aligned with that of a heat transfer pipe to be inspected to send the probe 9 into the heat transfer pipe 6 to be inspected. Further, compressed air is sent into the probe gun 10 and the probe 9 is allowed to advance through the heat transfer pipe 6 to perform inspection.

3. 发明专利

JPH0470551A APPARATUS FOR INSPECTING INNER WALL SURFACE OF HERMETICALLY CLOSED TANK 失效
公开(公告)号：JPH0470551A
公开(公告)日：1992-03-05
申请号：JP18504390
申请日：1990-07-12
申请人： CHUBU ELECTRIC POWER , CHUBU PLANT SERVICE KK
发明人： NAKAMURA TADASHI , HOIZUMI TATSURO , KANBARA TAKAAKI
IPC分类号： G01N21/88 , G01N21/954 , G21C17/003 , H04N7/18
摘要： PURPOSE:To perfectly inspect the inner wall surface of a hermetically closed tank by supporting a case having a television camera built therein at the leading end of a multistage cylinder in a state opposed to the inner wall surface of the tank at a right angle to raise, lower and revolve the same. CONSTITUTION:The multistage cylinder Y pivotally provided in the main body case 1 of the apparatus introduced into a hermetically closed tank T from the branch pipe part U thereof is raised at the center of the tank T by a rotary shaft 25. A camera case 36 having a television camera received therein is supported at the leading end part of said cylinder Y and revolved by the rotation of the flexible shaft 18 provided on the lower part thereof and controlled in its extension and retraction by the wire cable 33 connected to said leading end part in the same way. By this method, the inspection of the inner wall surface of the tank T can be performed smoothly, rapidly and certainly.

4. 发明专利

JPH04323409A UNDERWATER CLEANING DEVICE 失效
公开(公告)号：JPH04323409A
公开(公告)日：1992-11-12
申请号：JP8894491
申请日：1991-04-22
申请人： CHUBU ELECTRIC POWER , HITACHI SHIPBUILDING ENG CO
发明人： NAKAMURA TADASHI , HOIZUMI TATSURO , MAEDA KOZO , YAMADA YUTAKA , TAMADA HIROICHI
IPC分类号： B08B1/04 , E02B5/08 , E02B9/04
摘要： PURPOSE:To efficiently clean a surface to be cleaned by transmitting the elevation motion of a rake chain to a cleaning brush via an articulated arm device, and pressure-contacting the brush to the cleaning surface with a pressure- contacting spring to make vertical motion. CONSTITUTION:A horizontal frame 12 is connected over a rake chain 5 elevatingly moving along a bar screen 1. Next, an articulated arm device 16, having rotatable first and second arms 30 and 32, is provided on a travel body 13 movable along the horizontal frame 12. Then a telescopic arm part 32b is provided on the second arm 32, and a pressure-contacting spring 34 energizing the telescopic arm part 32b in an extending direction is attached. Moreover a rotatable cleaning brush 15 is fitted to the tip of the telescopic arm part 32b. The elevating motion of the rake chain 5 is transmitted to the cleaning brush 15 via the horizontal frame 12, travel body 13, and articulated arm device 16, and the brush 15 is pressure-contacted to a cleaning surface with the pressure-contacting spring 34 to be vertically moved to clean the bar screen 1.

5. 发明专利

JPH02221858A AUTOMATIC INSPECTING INSTRUMENT FOR FUEL TANK SIDE PLATE 失效
公开(公告)号：JPH02221858A
公开(公告)日：1990-09-04
申请号：JP4164089
申请日：1989-02-23
申请人： TAKAOKA ELECTRIC MFG CO LTD , CHUBU ELECTRIC POWER
发明人： NAKAMURA TADASHI , OTA OSAMU , HOIZUMI TATSURO , MATOBA MICHIO , ISHIHARA TAKESHI
IPC分类号： G01N29/22 , G01N27/90 , G01N29/26
摘要： PURPOSE:To improve the efficiency of the maintenance inspection of a fuel tank by using the inspection instrument and moving a main body mechanism vertically or horizontally so that an eddy current probe crosses a weld line zigzag. CONSTITUTION:The mechanism 9 is attracted on the fuel tank side plate 22 by driving wheels 3a - 3b made of permanent magnets fitted to the main body mechanism 9 suspended by an upper moving mechanism 21 on a temporary rail 14 and when the mechanism 9 is moved right and left, the mechanism is moved by the wheels 3a - 3d fixed in a direction parallel to a main body base 1. Simultaneously with the movement, an upper movement motor 17a is driven to move the mechanism 21 in synchronism with the mechanism 9. Further, when the mechanism is moved up and down, the wheels 3a - 3d are changed in direction by 90 deg. and fixed in a direction perpendicular to the base 1 and wires 20a and 20b are taken up by take-up drums 18a and 18b to move the mechanism. Then an eddy current flaw detector is used for the nondestructive inspection of the inspecting device 11 mounted on the mechanism 9, the eddy current probe cross the weld line zigzag, and the mechanism 9 is moved to inspect the weld zone of the side plate 22. When a defect is found, the device 11 stops and the defect is marked.

6. 发明专利

JPH0436645A INTERNAL INSPECTION DEVICE FOR CLOSED TANK 失效
公开(公告)号：JPH0436645A
公开(公告)日：1992-02-06
申请号：JP14279890
申请日：1990-05-31
申请人： CHUBU ELECTRIC POWER , CHUBU PLANT SERVICE KK
发明人： NAKAMURA TADASHI , HOIZUMI TATSURO , KANBARA TAKAAKI
IPC分类号： G01N21/88 , G01N21/954 , G21C17/003 , H04N7/18
摘要： PURPOSE:To enable smooth, speedy, and secure inspection by suspending a camera case atop of a main body case in a free entering/exiting state, providing plural line levers which have balance weights radially from the center of gravity of the case, and moving up and down the case. CONSTITUTION:The camera case 22 which contains a TV camera is suspended atop of the main body case 1 in the free entering/exiting state, the linear levers 25 and 26 are provided radially from the gravity center position of the case 22, and the balance weights 27 are fixed atop; and a take-up drum 13 for a flexible wire W which moves up and down the case 22 is provided at the base end part of the case 1. Then the device is put in the closed tank from its upper nozzle part and the case 22 is moved along longitudinal and lateral weld lines while freely elevated and swiveled in the tank; and the TV camera photographs the internal state, which is monitored and observed from outside and also video- taped. Consequently, the smooth, speedy, and secure inspection becomes possible.

7. 发明专利

JPH0355495A METHOD AND DEVICE FOR REMOVING ASH ADHERING TO HEAT TRANSFER PIPE OF BOILER 失效
公开(公告)号：JPH0355495A
公开(公告)日：1991-03-11
申请号：JP19004489
申请日：1989-07-21
申请人： CHUBU ELECTRIC POWER , BABCOCK HITACHI KK
发明人： NAKAMURA TADASHI , OTA OSAMU , HOIZUMI TATSURO , WATABE TSUNEO , MATSUMOTO TERUAKI , NAGASHIMA TOSHIJI , UMENISHI KOUJI , HIRAMATSU TETSUYUKI , WATANABE EIJI , YOKOBAYASHI TERUYUKI
IPC分类号： F22B37/56 , F22B37/48 , F28G13/00
摘要： PURPOSE:To peel off and disperse adhering ash from heat transfer pipes by permitting a heating means to perform heating from room temperature over specific temperature and allowing the device to be rapidly heated so as to form enough temperature difference to form an internal stress discontinuous part between the layers of a boiler heat transfer pipe surface part and the adhering ash. CONSTITUTION:The heat expansion characteristic of adhering ash rapidly changes in the range of 200-300 deg.C, particularly 250-300 deg.C by the change of a crystal structure. A heating means is allowed to heat to form temperature difference so as to form an internal stress discontinuous part in the boundary surface of a boiler heat transfer pipe surface part and the adhering ash or in the layer direction of the adhering ash fixed on heat transfer pipes and the adhering ash is embrittled or peeled off from the boundary surface between the heat transfer pipes and the adhering ash. For instance, after the adhering ash 22 fixed on and under of the heat transfer pipes 20a to be cleaned is irradiated by high energy visible rays and near infrared rays to peel off, disperse and remove, the heat transfer pipes 20a are put between both the sides with the use of a heater body 1 to whole-circumferentially irradiate the adhering ash 22 so as to peel off and disperse.

8. 发明专利

JPH02245685A UNDERWATER-POSITION RECOGNIZING APPARATUS 失效
公开(公告)号：JPH02245685A
公开(公告)日：1990-10-01
申请号：JP6567689
申请日：1989-03-17
申请人： CHUBU ELECTRIC POWER , HITACHI SHIPBUILDING ENG CO
发明人： HOIZUMI TATSURO , OTA OSAMU , MAEDA KOZO , SAKAI ATSUSHI , OBA KOZO
IPC分类号： G01S5/20
摘要： PURPOSE:To measure and display the position of a body under test even in an underwater tunnel having a long distance and a small diameter wherein the S/N of a received signal is decreased by transmitting and receiving an ultrasonic wave based on a transmitting signal whose self-correlation function is an impulse function. CONSTITUTION:This apparatus has the following parts: an underwater robot 1 as a body under test which is moved in the water; a transmitter 2 of ultrasonic waves on one side of an underwater reference position A; and a receiver 3 on the other side. A signal generating part 6 generates a digital transmitting signal whose self-correlation function is an impulse function for a processing and display device 4 on the ground. The transmitting signal is supplied to a the transmitter 2 through a cable 5. An operating part 8 performs the operation of correlation function between the transmitting signal and a digital received signal which is inputted from the receiver 3 through a cable 7. Thus, a distance L between the robot 1 and the reference position A is computed. Then, the position B of the robot 1 is displayed on a display part 9 based on the result of the operation in the operating part 8.

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