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11. 发明专利

JPS63210657A MEASUREMENT OF CRACKING IN PIPING USING ULTRASONIC FLAW DETECTION 失效
公开(公告)号：JPS63210657A
公开(公告)日：1988-09-01
申请号：JP4296687
申请日：1987-02-27
申请人： HITACHI LTD
发明人： OTSUKA TOSHIHIRO , SUEYOSHI NORIKIMI , MATSUNOBU TAKASHI , SUGAYA HIDEO , NAGASHIMA MASAJI
IPC分类号： G01N29/04
摘要： PURPOSE:To check for possible cracking and determine the shape and dimensions thereof, by analyzing and processing that signal with a microcomputer which is obtained by moving an ultrasonic probe axially and circumferentially along a piping. CONSTITUTION:Signals from various sensors 1 (a head rotation detecting limit switch, axial limit switch, rotation detector, axial movement detector and obstacle limit switch) are amplified with an amplifier 2 and fetched into a microcomputer 6 through an A/D converter 5. This signal is processed with the microcomputer 6 and a movement instruction signal is sent to a driver 10 to move a UT sensor 3 on the driver 10 spirally along the wall surface of a piping. After being processed with an ultrasonic flaw detector 4, a signal from the UT sensor 3 is fetched into the microcomputer 6 through an A/D converter 5. Then, a data is processed with the microcomputer 6 to check for possible cracking and calculate the shape and dimensions thereof, and the results are outputted to an output unit 7 while being stored into a memory 8.

12. 发明专利

JPH04140931A TRANSMISSION POWER CONTROL SYSTEM AND RADIO EQUIPMENT USING THE SAME 失效
公开(公告)号：JPH04140931A
公开(公告)日：1992-05-14
申请号：JP26460690
申请日：1990-10-01
申请人： HITACHI LTD
发明人： CHIBA YUTAKA , OTSUKA TOSHIHIRO
IPC分类号： H03G3/20 , H03G3/30 , H04B1/04 , H04B1/3822 , H04B1/40
摘要： PURPOSE:To attain the transmission at an object power even when transmission power is fluctuated by extracting part of power sent to an antenna, obtaining an attenuation from the output, and replacing the set attenuation into the actual attenuation when a difference from the preset attenuation exceeds a permissible value. CONSTITUTION:When a power amplifier circuit 2 starts the transmission upon the receipt of a transmission command from a CPU 15 via a signal line 25, part of the transmission output is extracted by an antenna monitor section 21. The CPU 15 fetches the data of the transmission output and compares the data with an output designation value to calculate the actually measured attenuation. Then the CPU 15 obtains a difference between the attenuation in a ROM 16 and the actual measurement attenuation and erases the data of the attenuation so far electrically when the difference is the permissible value or over and writes the actual measured attenuation to the ROM 16. Thus, whether or not the attenuation is fluctuated is detected and when fluctuation is in existence, it is revised by the actual measurement data. Thus, the fluctuation due to a secular change of the frequency characteristic of the transmission output or the like is processed.

13. 发明专利

JPH10204965A GUIDANCE SYSTEM FOR OPERATION OF DRAINAGE FACILITY 失效
公开(公告)号：JPH10204965A
公开(公告)日：1998-08-04
申请号：JP868197
申请日：1997-01-21
申请人： HITACHI LTD
发明人： ITO HIROKI , OTSUKA TOSHIHIRO
IPC分类号： E03F1/00 , G06Q10/04 , G06Q50/00 , G06Q50/06 , G06Q50/08 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To provide a guidance system for the operations of drainage facilities constructed in a river basin consisting of a river network where tributary basins are connected together through a plurality of flood control channels etc., whereby the operations of the drainage facilities arranged in the basin can be managed collectively and effectively. SOLUTION: The predicted result of each river condition after a certain period of time, the current pump operation information in each drainage facility, etc., acquired through a simulation using a river model where the current conditions of the rivers are entered as the data, are fed to a basin condition classifying part 11, which classifies the water incremental situation by magnitudes, and water increment database search parts 121-123 select/search the water increment databases 131-133 prepared in classification by magnitudes and take out one appropriate operation pattern. Thereupon a guidance output part 16 emits a guidance for the operations of drainage facilities based upon the obtained river conditions and the conditions of drainage facilities.

14. 发明专利

JPH02309083A SUPPORTING DEVICE FOR PIPE 失效
公开(公告)号：JPH02309083A
公开(公告)日：1990-12-25
申请号：JP12755289
申请日：1989-05-20
申请人： HITACHI LTD
发明人： OTSUKA TOSHIHIRO , MIZUNO SADAO
IPC分类号： F16L3/04
摘要： PURPOSE:To obtain high vibration resistance by providing a means to reduce the gap between a pipe and a U-bolt, and nearing the portion brought into contact with a saddle onto a center axis in a supporting device of the pipe provided with the frame of the pipe, saddle and U-bolt. CONSTITUTION:A frame 4 mounted with a pipe on it, a saddle 5A provided between the frame 4 and the pipe 1, and a U-bolt 2 fastened to the frame 4 over the pipe 1 to fix the pipe 1 to the frame 4 are provided. A means to reduce the gap (g) between the pipe 1 and the U-bolt 2 is provided, e.g., a loose hole 8 is bored on the frame 4, and it is adjusted by the movement of the fitting position of a plate 9. The portion of the saddle 5A brought into contact with the pipe 1 is arranged at the vicinity on the center axis passing the middle between the horizontal and vertical center axes of the pipe 1. As a result, support rigidity and load resistance are improved, and high vibration resistance is obtained.

15. 发明专利

JP2005030764A UNDERWATER INSPECTION DEVICE 审中-公开
公开(公告)号：JP2005030764A
公开(公告)日：2005-02-03
申请号：JP2003192539
申请日：2003-07-07
申请人： HITACHI LTD
发明人： KAWASAKI HIROBUMI , OTSUKA TOSHIHIRO , TAKAHASHI TOSHIYORI , SEYA TORU
IPC分类号： G21C17/08 , G21C17/003 , G21C19/07
摘要： PROBLEM TO BE SOLVED: To provide an underwater inspection device for inspecting in the water sealability of a base metal and a weld zone of a lining material without draining water in an underwater storage container for a spent fuel or the like. SOLUTION: An inspection box of this underwater inspection device has a seal packing, an ejector connection pipe and a negative pressure line on an opening end face. The ejector connection pipe is constituted of a high-pressure water supply pump and a supply source line through a water jet ejector, a water supply line and a water supply quantity adjusting valve. The water in the inspection box is sucked by the high-pressure water supplied from the water supply line on a place at the depth of water of 10m or more, and the inspection box is sucked onto the wall surface by a differential pressure with the pressure of pool water by depressurizing the inside of the inspection box. Leak water in a leak detection system provided on the lining type container back side is stopped by holding the inspection box in the sucked state onto an inspection object part in this way. Hereby, the existence of a weld zone penetration defect in the range of the lining material on an installation part is revealed by maintaining the inspection box. COPYRIGHT: (C)2005,JPO&NCIPI

16. 发明专利

JPH07288866A METHOD FOR DISCRIMINATING VALIDITY OF MOBILE COMMUNICATION TERMINAL EQUIPMENT 失效
公开(公告)号：JPH07288866A
公开(公告)日：1995-10-31
申请号：JP7729194
申请日：1994-04-15
申请人： HITACHI LTD
发明人： OTSUKA TOSHIHIRO
IPC分类号： H04Q7/38 , G06F12/14 , G06F21/62
摘要： PURPOSE:To prevent the use of an illegal mobile communication terminal equipment copying the manufacturer number by allowing a mobile communication terminal equipment to cipher its own manufacturer number, to send the number to a mobile exchange, allowing the mobile exchange to decode it and discriminate the validity. CONSTITUTION:A mobile communication terminal equipment receives notice information 101 from a radio base station and compares area data included therein with area data stored by itself. When they are dissident, the area data stored in itself are used and the manufacture number is ciphered, a position registration signal 107 is sent to a radio base station and sent from a base station to the mobile exchange. The mobile exchange receives the signal 107 and uses the area data stored in itself to decode the ciphered manufacturer number and discriminates the validity of the decoded manufacturer number. When it is a valid manufacturer number, an identification number of the radio base station is updated into an identification number of the radio base station being a sender and a confirming signal 117 is sent to the mobile communication terminal equipment via the radio base station.

17. 发明专利

JPH0449805A TROLLEY BUS DUCT 失效
公开(公告)号：JPH0449805A
公开(公告)日：1992-02-19
申请号：JP15720090
申请日：1990-06-15
申请人： HITACHI LTD , HITACHI SETSUBI ENG KK
发明人： OTSUKA TOSHIHIRO , SUGAYA HIDEO , MAEZAWA KAZUHIRO , NAKAJIMA FUMITAKA
IPC分类号： H02G5/04
摘要： PURPOSE:To develop a trolley bus duct for a high temperature and radiation resistance capable of being installed to a conventional bus duct by forming an insulator of ceramics, and forming a first groove extending a creeping distance to a side face while shaping a second groove engaged with a connecting bracket mounted to the duct. CONSTITUTION:An insulator 7 is formed of ceramics, and can be manufactured through monolithic molding. Consequently, the shape of the insulator can also correspond to the shapes of complicate T-shaped grooves 8 supporting a conductor easily. Grooves 9 are molded to the surface of the end section of the insulator 7, and structure in which a creeping distance in the direction of the conductor is increased extremely is formed. Grooves 11 are set to the side faces of the insulator 7. Connecting plates 12 are mounted to the grooves, and the connecting plates 12 are connected to a bus duct 10, thus allowing the usage of the bus duct having conventional structure. Accordingly, a trolley bus duct for a high temperature and radiation resistance can easily be realized.

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