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1. 发明专利

JPH03249493A CORROSION PREVENTING STRUCTURE FOR UNDERGROUND PIPE LINE AND METHOD OF BUILDING THEREOF 失效
公开(公告)号：JPH03249493A
公开(公告)日：1991-11-07
申请号：JP4785490
申请日：1990-02-28
申请人： SUMIKIN KOKAN KOJI KK , SUMITOMO METAL IND
发明人： SASAKI YUKIYA , SAKUMOTO TOSHIKAZU
IPC分类号： F16L1/024 , H02G9/06
摘要： PURPOSE:To prevent an underground pipe line from being corroded, by inserting an inner pipe in an outer pipe having its inner surface covered with an electrical insulator, with a predetermined gap therebetween in which a filler is charged so that corrosive current or the like can be blocked. CONSTITUTION:The inner surface 11 of an outer pipe 1 in which inner pipes 2 is inserted with a predetermined gap therebetween, is covered with an insulating paint such as a paint containing therein glass flakes, a tar epoxy paint, an epoxy paint, an asphalt or the like, or an electrical insulator 3 such as polyethylene, FRP, vinyl or the like. A filler such as sand mortar, cement mill or the like is charged between the gap between the inner and outer pipes. The inner pipes are joined together by welding or using mechanical joints. As a result, the pipe line is protected against corrosion, uniformly in its entirely, by means of the coating in a double structure. Further, a stray current of a macrocell corrosive current can be blocked and so forth.

2. 发明专利

JPH03227615A HEAT-SHRINKABLE SHEET HEATING DEVICE 失效
公开(公告)号：JPH03227615A
公开(公告)日：1991-10-08
申请号：JP2469990
申请日：1990-02-02
申请人： SUMIKIN KOKAN KOJI KK , SUMITOMO METAL IND
发明人： SASAKI YUKIYA , SASAI AKIRA , MAEDA KATSUTOSHI , OSUMI SATOSHI , AKIMOTO KIYOSHI
IPC分类号： F16L58/18 , B29C63/42 , B29K105/02
摘要： PURPOSE:To heat automatically and uniformly a pipe extending over the whole circumference by making use of a heat source whose safety is high by differing from a flame of a burner, by a method wherein a hot air ring outserted over a coated steel pipe is moved in the direction of a pipe axis by a self-propelled traverse rest, which is made into a heating method of a heat-shrinkable sheet. CONSTITUTION:A rest 1 is mounted on a coated steel pipe W by turning a heat-shrinkable sheet 5 inside under a state where a lower semicircular pipe 3-2 and flexible tube 4-2 are removed from a hot air ring 3. Then the lower semicircular pipe 3-2 of the hot air ring 3 is fitted into the coated steel pipe from the lower side and connected with an upper semicircular pipe 3-1 through a clamp lever with which a flexible tube 4-2 is connected further. Then the hot air ring 3 is moved to the central part (weld bead part) of the heat- shrinkable sheet 5, hot air having a predetermined temperature is sent into the hot air ring 3 through the flexible tube 4-2 and the central part of the heat-shrinkable tube 4-2 is heated and contracted, to begin with. Then the heat- shrinkable sheet 5 is heated and shrinked in order while moving the hot air ring 3 at a fixed speed toward a one side end part from the central part by driving a linear motor 2-3.

3. 发明专利

JPH02127976A METHOD FOR CONTROLLING AUTOMATIC WELDING MACHINE 失效
公开(公告)号：JPH02127976A
公开(公告)日：1990-05-16
申请号：JP28010088
申请日：1988-11-04
申请人： SUMITOMO METAL IND , OSAKA GAS CO LTD , SUMIKIN KOKAN KOJI KK
发明人： TANAKA YUKIO , SAKOMA TAKASHI , TSUCHIYA MASATOSHI , TSURU MASAYUKI , KASATANI TATSUYA
IPC分类号： B23K9/095
摘要： PURPOSE:To perform welding with high quality by changing welding conditions according to the amount of dislocation detected in the peripheral direction in a butt part of two pipes to perform welding. CONSTITUTION:A rotary motor is driven and an inner pipe is rotated clockwise and a mobile motor in the pipe-axial direction is driven so that a picture of a weld line is always coincident with a fixed point on a TV screen and a welding head 4 is moved in the pipe-axial direction. This amount of movement is detected by a potentiometer and the positional data in the pipe-axial direction of the weld line is obtained. In addition, during this rotation, a mobile motor in the radial direction is controlled automatically and driven so that a detected value of a potentiometer 62 of the rear side in a sensor 60 is maintained constant and the welding head 4 is also moved in the radial direction. This amount of movement is detected by the potentiometer and the positional data in the radial direction of the weld line is obtained. The data on the amount of dislocation is obtained from the difference between the detected values of both potentiometers 61 and 62 during rotation.

4. 发明专利

JPH02126110A ATTITUDE DETECTOR 失效
公开(公告)号：JPH02126110A
公开(公告)日：1990-05-15
申请号：JP28009788
申请日：1988-11-04
申请人： SUMITOMO METAL IND , OSAKA GAS CO LTD , SUMIKIN KOKAN KOJI KK
发明人： TANAKA YUKIO , SAKOMA TAKASHI , TSUCHIYA MASATOSHI , TSURU MASAYUKI , KASATANI TATSUYA
IPC分类号： G01C9/12
摘要： PURPOSE:To surely detect the attitude of an object to be detected without being affected by the direction of gravity by axially supporting a potentiometer in the direction orthogonal to its revolving shaft by a supporting member and always keeping the revolving shaft horizontal with the axially supported part as the center by two weights. CONSTITUTION:An attitude detector 208 equipped in a working machine for welding or the like in a pipe like a pipeline detects the angle of rotation of a revolving shaft 208b with a pendulous potentiometer 208a to detect the attitude of the working machine. The potentiometer 208a has the outer frame part fixed to the middle part of a rolling shaft 208f in the direction orthogonal to the revolving shaft 208b and is supported turnably around the rolling shaft 208f by a supporting member 208e. Since a weight 208c and a balance weight 208d are provided in end parts of the revolving shaft 208b, the revolving shaft 208b of the potentiometer 208a is turned around the rolling shaft 208f and is kept horizontal whichever rolling attitude the working machine takes in the pipe.

5. 发明专利

JPH02124258A TRACTION TYPE POLISHING DEVICE FOR PIPE INNER FACE 失效
公开(公告)号：JPH02124258A
公开(公告)日：1990-05-11
申请号：JP27169288
申请日：1988-10-27
申请人： SUMITOMO METAL IND , OSAKA GAS CO LTD , SUMIKIN KOKAN KOJI KK
发明人： TANAKA YUKIO , TSUCHIYA MASATOSHI , SAKOMA TAKASHI , TSURU MASAYUKI
IPC分类号： B24B27/00
摘要： PURPOSE:To travel the bent part, cut and fitted part, dresser joint part, dislocation step difference part, etc., of a pipe line stably and smoothly without any inconvenience by providing a main body support 1 caterpillar plurally projected radially like sliding with the pipe inner face and elastically supporting the main body at the oder peripheral end part of a disk shaped device main body in smaller diameter than the pipe inner diameter. CONSTITUTION:A device main body 1 is made in the structure to be tracted by an automatic traveling device via a tracting joint provided at both ends of a spline shaft 3 projected in the pipe axial line to the main body center part. This main body 1 travels inside the pipe by plural main body supporting caterpillars 2 provided at the radial position on the outer peripheral end part. In case of grinding the welding bead of the pipe inner peripheral face by this traveling grinder, a rotating cylindrical body 4 is rotated via gears 4-9, 4-5 by driving motors 4-8 fitted integrally with the rotating cylindrical body 4. Also, in case of moving the grinder in the pipe axial direction, the motors 4-10 are driven and the rotating cylindrical body 4 of the above of the spline shaft 3 is moved.

6. 发明专利

JPS62158570A REINFORCEMENT WELDING METHOD FOR EXISTING PIPE 失效
公开(公告)号：JPS62158570A
公开(公告)日：1987-07-14
申请号：JP29740085
申请日：1985-12-28
申请人： SUMITOMO METAL IND , SUMIKIN KOKAN KOJI KK
发明人： MIYAZAKI JUNICHI , KASATANI TATSUYA
IPC分类号： B23K31/00 , B23K9/02 , B23K9/028
摘要： PURPOSE:To execute repair welding with a high efficiency by inclining and holding a welding torch against a pipe axis, executing the weaving to the pipe axis in a set state at every turning, and also bringing it to an automatic return or stop, when a welding condition is out of a set range. CONSTITUTION:A profile sensor 20 is positioned at the top part of a steel pipe W and a torch 16 is run plural times along a fillet weld zone A, lamination welding is executed, and a repair band B is joined to the steel pipe W. In the inside of a user program, a weaving data of about 45 deg. of every time is contained, and by the data of the upper and lower, and the right and left positions of the welding torch 16 which has been inclined about 45 deg., weaving is realized extending over each turning. The welding condition is integrated into the user program, and the pipe top part is set as an initial position at every movement of 10mm. In this way, the welding condition is always monitored, a stop and an automatic return of an automatic welding equipment can be executed, also a bead having no defect can be obtained, and repair welding can be executed with a high work efficiency.

7. 发明专利

JPS6149550B2 失效
公开(公告)号：JPS6149550B2
公开(公告)日：1986-10-30
申请号：JP2933182
申请日：1982-02-24
申请人： SUMITOMO KINZOKU KOGYO KK , SUMIKIN KOKAN KOJI KK
发明人： KITANO KENJI , WAKAO RYOSUKE , KURODA YASUNAO , SAKURAI TADAO
IPC分类号： F16L1/00 , E02B9/06 , E02F5/10 , F16L1/038

8. 发明专利

JPS61159275A AUTOMATIC WELDING METHOD 失效
公开(公告)号：JPS61159275A
公开(公告)日：1986-07-18
申请号：JP28128484
申请日：1984-12-28
申请人： SUMIKIN KOKAN KOJI KK
发明人： SHIMANISHI HIROKAZU , YASUI AKIRA
IPC分类号： B23K9/028 , B23K9/02 , B23K37/06
摘要： PURPOSE:To improve working efficiency and welding quality by fitting externally and fixing copper backing strips which can be cooled with water onto a butt part and subjecting said part to butt welding while changing the distance between the top end of a welding torch and the inside surface of a pipe and the angle of inclination of the torch. CONSTITUTION:About 50 deg. groove is set to the butt part of an existing welded pipe 1 and an unwelded pipe 2 and the root gap is made zero. A pair of semi- toric copper backing strips 3, 3 are disposed on the outside circumference of the butt part and are fitted externally and fixed to the butt part by means of lever blocks 4. The strip 3 is formed internally with a cavity for water cooling in which the cooling water circulates. A welding head 15 is supported rotatably around the central axis of the pipe to the inside of the pipe by means of fixing legs and is driven by an electric motor 17. The welding torch 21 welds the butt part while changing the distance between the same and the inside surface of the pipe and the angle of inclination thereof in accordance with optimum conditions by the above-mentioned mechanism.

9. 发明专利

JPS5938476B2 JPS5938476B2 - 失效
公开(公告)号：JPS5938476B2
公开(公告)日：1984-09-17
申请号：JP3231676
申请日：1976-03-23
申请人： Sumitomo Kinzoku Kogyo Kk , Sumikin Kokan Koji Kk , Tokai Kogyo Kk
发明人： NARASAKI SHIGERU , NAKAO HISASHI , KUWABARA MOTOI
IPC分类号： E21D9/06 , F16L1/00

10. 发明专利

JPS5989894A METHOD OF EXECUTING BRANCH PIPE IN METHOD OF PIPE-IN-PIPE CONSTRUCTION 失效
公开(公告)号：JPS5989894A
公开(公告)日：1984-05-24
申请号：JP19875982
申请日：1982-11-11
申请人： SUMITOMO METAL IND , SUMIKIN KOKAN KOJI KK
发明人： YOKOGAWA TOORU , IZUMIMOTO SHIYOUJI , TSURU MASAYUKI , MIYAMOTO TETSUO
IPC分类号： F16L41/08 , F16L1/00

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