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1. 发明专利

JPH0825127A PIPE CUTTING MACHINE 失效
公开(公告)号：JPH0825127A
公开(公告)日：1996-01-30
申请号：JP15700994
申请日：1994-07-08
申请人： TOKYO GAS CO LTD , NAKANO SEISAKUSHO KK
发明人： SAKASAI RYUJI , NAKANO KINJIRO , INOUE YOJIRO
IPC分类号： B23D21/00
摘要： PURPOSE:To provide a pipe cutting machine by which a pipe line for flammable fluid such as a gas conduit can be quickly and safely cut without contaminating a working environment. CONSTITUTION:A cutting machine main body 1, which rotationally drives a diamond cutter so as to sequently cut a pipe P to be cut around its whole circumference while circularly moving along the outer circumference of the pipe P to be cut, is provided with a cover member 11, which covers the diamond cutter 6 so that its circumference part faces the outer circumferential face of the pipe P to be cut, and a nozzle 12, which jets inert gas toward the cutting part of the diamond cutter 6 inside the cover member 11.

2. 发明专利

JP2002071655A ON-OFF METHOD FOR POWER SUPPLY OF INSPECTION PIG 失效
公开(公告)号：JP2002071655A
公开(公告)日：2002-03-12
申请号：JP2000255817
申请日：2000-08-25
申请人： TOKYO GAS CO LTD
发明人： SAKASAI RYUJI , SUYAMA KIICHI , YONEMURA YASUSHI
IPC分类号： G01N29/26 , F16L55/26 , G01N21/954 , G01N27/82
摘要： PROBLEM TO BE SOLVED: To considerably reduce battery loss by suppressing loss of leaving a power supply on for the control, measurement and recording of an inspection pig that travels in a conduit, for three to four hours required from the insertion of the inspection pig in a launcher until taking it out of a receiver. SOLUTION: The power supply is switched on and off using the rotation start and rotation completion of wheels of a distance recorder of the inspection pig.

3. 发明专利

JP2005299694A Jet gas shutting-off system, its shutting-off material, and shutting-off method 审中-公开
标题翻译：喷气开关系统，切断材料和切断方法
公开(公告)号：JP2005299694A
公开(公告)日：2005-10-27
申请号：JP2004112076
申请日：2004-04-06
申请人： Fusoh Tech Kk , Tokyo Gas Co Ltd , 扶桑技研株式会社 , 東京瓦斯株式会社
发明人： SATAKE YUKINOBU , SAKASAI RYUJI , ARAKI KOICHI , TOMII TAKAHISA
IPC分类号： F16L55/10
摘要： PROBLEM TO BE SOLVED: To speedily shut off gas leakage from a conduit in a place apart from a damaged part of the conduit to facilitate continuous learning of technology for a pump supplying a shutting-off material and maintenance. SOLUTION: A gas meter G communicating with the damaged conduit D buried under a road R and attached to an inner pipe N extending on the ground, and an end part Nu of the inner pipe N is opened. A hardening material 7 and a solidifying material 3 having flowability are supplied into the inner pipe N from the opened end part Nu of the inner pipe N by a first supply pump 10 and a second supply pump 20. The solidifying material 3 and the hardening material 7 are mixed while flowing onto the damaged conduit D side in the inner pipe N, are gradually hardened, flow into the conduit D, are further hardened, and are deposited in the conduit D to shut off the conduit D. The solidifying material 3 and the hardening material 7 have flowability. When they are mixed, they start to be hardened while they have flowability and become non-flowability substance after predetermined period of time. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了能够连续地学习供给关闭材料和维护的泵的技术，从而能够快速地切断与导管的损坏部分隔开的位置处的导管的气体泄漏。解决方案：一个燃气表G与埋在道路R下的损坏导管D连通，并连接到在地面上延伸的内管N，内管N的端部Nu打开。具有流动性的硬化材料7和固化材料3通过第一供给泵10和第二供给泵20从内管N的开口端部Nu供给到内管N.固化材料3和硬化材料 7在流入内管N中损坏的管道D侧时混合，逐渐硬化，流入导管D，进一步硬化，并沉积在导管D中以切断导管D.固化材料3和硬化材料7具有流动性。当它们混合时，它们在具有流动性的同时开始变硬，并且在预定的时间段之后变成不可流动的物质。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2005140158A Gas cutoff device 有权
标题翻译：气体切割装置
公开(公告)号：JP2005140158A
公开(公告)日：2005-06-02
申请号：JP2003374421
申请日：2003-11-04
申请人： Osaki Seimitsu Kk , Tokyo Gas Co Ltd , 大肯精密株式会社 , 東京瓦斯株式会社
发明人： SATAKE YUKINOBU , SAKASAI RYUJI , MORI AKIHITO , DEWA TEPPEI
IPC分类号： F16L55/12 , F16K7/10
摘要： PROBLEM TO BE SOLVED: To provide a gas cutoff device having a constitution capable of preventing the undesired diffusion of a gas in taking out a pipe conduit cutoff bag. SOLUTION: This gas cutoff device has the constitution for inserting a pair of pipe conduit cutoff bags B, B' to a communication hole P1 of a small diameter formed on a pipe conduit P for flowing the gas, along a gas flowing direction. This gas cutoff device comprises a bag inserting device 2 to which the bags B, B' and gas circulating members 4, 4' corresponding to the bags are inserted, and a shutter device 3 mounted between the bag inserting device and the communication hole P1 of the pipe conduit P for cutting off the communication hole P1 from the external, and the shutter device 3 comprises constitutions 3A, 3A' capable of closing the inserting position of the drawn out pipe conduit cutoff bag B' by holding an outer circumference of the left pipe conduit cutoff bag B, when one of the pair of pipe conduit cutoff bags B, B' is drawn out. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种气体截断装置，其具有能够防止气体在取出管道截流袋时不期望的扩散的构造。解决方案：该气体截断装置具有将一对管道截流袋B，B'插入到用于使气体流动的管道P上形成的小直径的连通孔P1沿气体流动方向。该气体切断装置包括袋插入装置2，袋B，B'和与袋对应的气体循环构件4,4'插入其中，并且安装在袋插入装置和通孔P1之间的快门装置3 用于从外部切断连通孔P1的管道P和闸门装置3包括能够通过保持左侧的外周保持拉出的管道截流袋B'的插入位置的构造3A，3A' 管道切断袋B，当一对管道切断袋B，B'中的一个被抽出时。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2004239319A Tool and method for blocking conduit 审中-公开
标题翻译：阻塞管道的工具和方法
公开(公告)号：JP2004239319A
公开(公告)日：2004-08-26
申请号：JP2003027388
申请日：2003-02-04
申请人： Tokyo Gas Co Ltd , 東京瓦斯株式会社
发明人： SATAKE YUKINOBU , SAKASAI RYUJI
IPC分类号： F16L55/12
摘要： PROBLEM TO BE SOLVED: To provide a tool and a method for blocking a conduit in which higher blocking performance can be ensured with a single blocking tool of a small in-conduit installation width , the blocking performance is not degraded even by impurities in conduits, unevenness of an inner surface of the conduits, or different diameter conduits, and the safety is ensured by expansive bodies demarcated into a plurality of spaces against any possible breakage. SOLUTION: An expansion body 10 has a plurality of expansion spaces 11 demarcated by a bulkhead 10a. In the expansion spaces 11, all expansion spaces 11 are communicated with each other by a communication hole 12 and a check valve 13. An in-conduit tightly fitting part 14 to be tightly fitted to an inner surface of the conduit is formed in each of the expansion space 11. The in-conduit tightly fitting part 14 is formed so that each thereof is separated and linearly and tightly fitted to the entire circumference of the conduit. A non-tightly fitting part 15 which is not tightly fitted to the inside of the conduit is formed on an outer circumference of the expansion body 10 between the adjacent in-conduit tightly fitting parts 14. A pouring pipe 16 is connected to the expansion space 11 on one end, and an expansion fluid pouring path is formed from one end side to the other end side of the expansion space 11. COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种用于阻塞导管的工具和方法，其中使用具有小管道安装宽度的单个阻塞工具可以确保更高的阻塞性能，即使是杂质也不会降低阻塞性能在导管中，导管的内表面的不均匀性或不同直径的导管，并且通过被分隔成多个空间的膨胀体来抵抗任何可能的断裂来确保安全性。解决方案：膨胀体10具有由隔板10a划分的多个膨胀空间11。在膨胀空间11中，所有的膨胀空间11通过连通孔12和止回阀13彼此连通。在导管的内表面上紧密配合的管内紧密配合部14形成在膨胀空间11.管内紧密配合部分14形成为使得其中的每一个分开并且直线地紧密地配合到导管的整个圆周上。在相邻的管内紧密配合部分14之间的膨胀体10的外圆周上形成有不紧密配合到管道内部的非紧密配合部15.浇注管16连接到膨胀空间 11，并且从膨胀空间11的一端侧到另一端形成膨胀流体浇注路径。（C）2004年，JPO＆NCIPI

6. 发明专利

JPH11304049A SAFETY DEVICE OF VALVE AND ITS MANUFACTURE 失效
公开(公告)号：JPH11304049A
公开(公告)日：1999-11-05
申请号：JP10268498
申请日：1998-04-14
申请人： TOKYO GAS CO LTD , TOHO GAS KK , NIPPON STEEL CORP , ASHIMORI IND CO LTD
发明人： ITO NOBUYUKI , HAYASHIDA HIDEAKI , IIMURA SHOICHI , SAKASAI RYUJI , MORI EIJI , OBA NOBUO , HAJIKI YUKIO , YAGI ISABURO , ISHIKAWA MASATOSHI , AZUMA KATSUHIKO
IPC分类号： F16K27/00 , F16K51/00
摘要： PROBLEM TO BE SOLVED: To prevent the outflow of a fluid in deformation of joints on both sides of a valve by an earthquake or the like, and temporarily ensure a passage by covering the outside of the valve of an existing pipeline and the joints on both the sides thereof with a flexible pressure resisting airtight tube member, and airtightly mounting both sides ends of this member to the circumference of a pipe body. SOLUTION: A through-hole is bored in a part of a plastic tube 12 consisting of a flexible airtight material, and the operating part of a valve 2 is fitted to this through-hole, and the periphery thereof is airtightly pressed by a presser ring. The plastic tube 12 is wound so as to enclose the outside of the valve 2 and a flange joint 3, and both the ends thereof are fitted to the tapered surface 8 of a side flange 5. A taper ring 10 is assembled on the circumference, and fastened by a bolt 11 to nip and airtightly fix the plastic tube 12 between the tapered surfaces 8, 9. Further, a cylindrical reinforcing cloth 15 is formed on the outside of the plastic tube 12, and both the ends thereof are fitted to the circumference of the taper ring 10 and fixed by a fastening ring 14.

7. 发明专利

JP2002090470A METHOD FOR MONITORING TRAVEL STATE OF PIG 失效
公开(公告)号：JP2002090470A
公开(公告)日：2002-03-27
申请号：JP2000275797
申请日：2000-09-12
申请人： TOKYO GAS CO LTD
发明人： SUYAMA KIICHI , SAKASAI RYUJI , MASUKO TOKUSHIGE , YONEMURA YASUSHI , HOTTA HISAO
IPC分类号： G01L13/00 , G01B17/00 , G01H17/00 , G01V9/00
摘要： PROBLEM TO BE SOLVED: To overcome the problem of a prior art such that the precision of position detection of a pig traveling in a duct becomes worse as the distance between a sound listening position and the pig exceeds several km when the pig 10 is tracked, the program that it becomes difficult to decide the position of the pig when the pig travels fast, and the problem that the pig is possibly broken when large differential pressure is applied across the pig. SOLUTION: A sound sensor 13 detects a shock wave that the pig generates at a weld position of the duct to track the travel direction of the pig and also monitor the difference pressure across the pig; when the pig stops traveling, a position that the pig which travels again reach its normal speed again is predicted from the differential pressure across the pig and settings of the frequency filter band and gain of the sound sensor are switched.

8. 发明专利

JPH10196872A ELECTROFUSION DEVICE, FUSION METHOD AND FUSION INDUCTION DEVICE 失效
公开(公告)号：JPH10196872A
公开(公告)日：1998-07-31
申请号：JP293097
申请日：1997-01-10
申请人： TOKYO GAS CO LTD , KUBOTA KK
发明人： IIMURA SHOICHI , SAKASAI RYUJI , TERADA HAJIME , BAI HIDEKI , TAGO TAKU , WATABE HIROTSUGU , NAGAMATSU SHIGEYOSHI , HIOKI MASATO
IPC分类号： F16L41/08 , F16L47/02
摘要： PROBLEM TO BE SOLVED: To improve reliability and workability in joining a saddle on to pipe by fusion. SOLUTION: A seat 16a of a saddle 16 is passed through a first hole 12a formed in a cast iron pipe 12 against the wall of a recycled pipe 14 inserted in the cast iron pipe 12 by means of a support member mounted above the cast iron pipe 12. The coil part 46a of a work coil 46, having outside diameters smaller than the bore of the first hole 12a in the cast iron pipe 12, is brought into contact through the first hole 12a with the outer surface of the seat 16a of the saddle 16, and a work coil press 40 arranged on a support 24 is then moved downward to press the coil part 46a against the outer surface of the seat 16a. In that state, a heating element arranged in the inner surface of the seat 16a is joined on to the coil part 46a by fusion with the interval therebetween held constant.

9. 发明专利

JPH0959920A METHOD AND DEVICE FOR PULLING OUT BLOCK FOR ROAD 失效
公开(公告)号：JPH0959920A
公开(公告)日：1997-03-04
申请号：JP21185295
申请日：1995-08-21
申请人： TOKYO GAS CO LTD
发明人： SAKASAI RYUJI , TERADA HAJIME
IPC分类号： E01C23/12 , B25B27/14
摘要： PROBLEM TO BE SOLVED: To pull out existing blocks for a road, with which a road is paved, without breakage and to effect the reuse thereof. SOLUTION: The surfaces of blocks 24 for a road to be pulled out from a road are cleaned and fluid for airtight formation is located on the surface thereof and a sucker 3 is forced into contact therewith. The block is sucked by a vacuum and in a suction state, the block 24 for a road is lifted by a handle 2 arranged at the sucker 3 and pulled out from a road. This constitution and method dispenses with purchasing new blocks 24 for a road and reduces a cost. Further, it dispenses with disposal thereof as industrial waste, thus resources are saved.

10. 发明专利

JPH08174319A DEVICE FOR ELIMINATING METALLIC CHIP FROM INSIDE OF BORED PIPE 失效
公开(公告)号：JPH08174319A
公开(公告)日：1996-07-09
申请号：JP31842394
申请日：1994-12-21
申请人： TOKYO GAS CO LTD
发明人： SAKASAI RYUJI , TERADA HAJIME
IPC分类号： B23Q11/00 , B23B41/08
摘要： PURPOSE: To provide a metal chip eliminating device easily inserted into and pulled out of a pipe when metal chips scattered in the pipe passage are eliminated and capable of surely recovering attracted chips. CONSTITUTION: A metal chip eliminating device is constructed in a manner that a spherical magnet 2 for attraction metal chips is fixed to one end of a flexible connecting member 3, the other end of the flexible connecting member 3 is incorporated and fixed in a rodlike core material 5 and the rodlike core material 5 is inserted so as to be slid into an external pipe member 6 having an expanded diameter section 4 for housing the spherical magnet 2 in its tip. When used, the eliminating device is inserted into a pipe with the spherical magnet 2 kept housed in the expanded diameter section 4 of the external pipe member, the rodlike core material 5 is then pushed so as to expose the spherical magnet 2 inside the pipeline, chips are attracted by moving the spherical magnet 2 in the pipe and after attraction thereof, the rodlike core material 5 is pulled so as to house the spherical magnet 2 in the expanded diameter section 4 and the eliminating device is pulled out of the pipeline.

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