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101. 发明专利

JP2003185085A REGENERATING AND REPAIRING METHOD OF PIPING FOR HOT WATER 审中-公开
公开(公告)号：JP2003185085A
公开(公告)日：2003-07-03
申请号：JP2001384697
申请日：2001-12-18
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , SHIMIZU SEITA
IPC分类号： F16L58/10 , B29C63/34 , B29L23/00 , F16L1/00 , F16L55/16
摘要： PROBLEM TO BE SOLVED: To provide a regenerating and repairing method of piping for hot water, which can respond to corrosion in a pipe caused by vapor, and in which harmful substance does not flow out into the hot water flowing in the pipe. SOLUTION: A corrosion-proof layer 2 is formed on an inner face 1a of the pipe, a film-like resin tube 3 safe in food hygiene and having chlorine water resistance is inserted, while being contracted or bent, into the pipe after the corrosion-proof layer is formed, and the resin tube 3 is brought into close-contact on the surface of the corrosion-proof layer 2 by heating and pressure expansion or restore processing. COPYRIGHT: (C)2003,JPO

102. 发明专利

JP2003172617A INSPECTION DATA-COLLECTING METHOD FOR GAS PIPE 审中-公开
公开(公告)号：JP2003172617A
公开(公告)日：2003-06-20
申请号：JP2001374530
申请日：2001-12-07
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , SHIMIZU SEITA
IPC分类号： G01B21/08 , C23F13/00
摘要： PROBLEM TO BE SOLVED: To reduce the inspection costs for a gas pipe by carrying out inspection and measures in cooperation. SOLUTION: The life of a countermeasure method to be performed to a gas pipe that is buried into the ground is obtained in advance (S1). The state of the gas pipe is inspected in the execution of the countermeasure method, and inspection data are collected based on the inspection (S2). A box for inspection leading to the gas pipe is provided when the execution of the countermeasures is completed (S3). Maintenance management data are created based on the inspection data (S4). After the execution of the countermeasures, the state of the gas pipe is inspected via the box for inspection, and the inspection data based on the inspection are collected (S5). After that, the maintenance management data are updated (S6). COPYRIGHT: (C)2003,JPO

103. 发明专利

JP2002166224A REPARING METHOD OF EXISTING CONDUIT 失效
公开(公告)号：JP2002166224A
公开(公告)日：2002-06-11
申请号：JP2000366085
申请日：2000-11-30
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , SHIMIZU SEITA
IPC分类号： F16L55/16 , B05C7/04 , B05D7/14 , B05D7/22 , B05D7/24
摘要： PROBLEM TO BE SOLVED: To provide a repairing method of existing conduits that can secure safety to prevent leaking gases in existing conduits from carelessly gushing out at a boring work of such conduits after a new conduit is led into the old ones. SOLUTION: This is a construction work method featured as follows to repair an existing conduit 1 by leading in a new conduit material 2 into the existing conduit 1. As the above new conduit material 2, a conduit material 2 made of a resin material is used. A plurality of opening parts 2A are provided to the new conduit material 2 in its periphery, then it is led into the existing conduit 1. After that, a filling agent R made of such materials that not only can possess an affinity with the conduit material 2 but also maintain an adhesive power is pressurized into the new conduit material 2. Before the filling agent R cures, the inside of the new conduit material 2 is swept by a pig to discharge any possible filling agent R remaining there.

104. 发明专利

JP2002096019A METHOD OF CONTROLLING RESIN FOR LINING 失效
公开(公告)号：JP2002096019A
公开(公告)日：2002-04-02
申请号：JP2000291661
申请日：2000-09-26
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , SHIGEFUJI TAKASHI , SHIMIZU SEITA
IPC分类号： B05D3/00 , B05B13/06 , B05C7/02 , B05C11/10 , B05D1/02 , B05D7/22
摘要： PROBLEM TO BE SOLVED: To provide a method for controlling a resin for lining, in which inconveniences such as the deterioration of spray efficiency, unstable curing time and the increase of prespraying quantity of the resin are eliminated by easily judging the resin temperature at the time of spraying regardless of the level of skill in the control of the spraying temperature. SOLUTION: In the method of controlling the temperature of the lining resin at the time of lining the inside of a pipe by spraying the lining resin transported from housing parts 1 and 2 by using a spray nozzle 5, a heat sensitive pigment of which color is changed at a prescribed temperature as a threshold value is incorporated in the resin housed in the housing parts 1 and 2 and the sprayed resin temperature is judged by the color of the pigment sprayed from the spray nozzle 5.

105. 发明专利

JP2002096008A PIPE INSIDE LINING DEVICE 失效
公开(公告)号：JP2002096008A
公开(公告)日：2002-04-02
申请号：JP2000291662
申请日：2000-09-26
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , SHIGEFUJI TAKASHI , SHIMIZU SEITA
IPC分类号： F16L58/10 , B05C7/08 , F16L55/16
摘要： PROBLEM TO BE SOLVED: To provide a pipe inside lining device capable of being used even in a pipe line containing bending parts and provided with a structure to enable the centering without disturbing the traveling. SOLUTION: The pipe inside lining device for lining the inside surface of a pipe by spraying a resin liquid from a spray nozzle moving inside the pipe is provided with a base body part 1A housing the resin liquid and the spray nozzle 1B communicating with a resin liquid housing part of the base body part 1A, a sled-like main leg part 2 extending toward the under peripheral surface of the pipe line P and capable of being in contact with the lower peripheral surface and an assistant leg part 2 extending toward the side direction of the inner peripheral surface of the pipe line P are provided in the base body part 1A, the main leg part 2 is provided with a pair of supporting columns 4 and 5 along the traveling direction and is formed to be rocked in the horizontal plane by making the supporting column 4 of one of a pair of the supporting columns 4 and 5 in the traveling direction as a supporting point and the assistant leg part 3 is provided with a wheel 3A supported to be shrinkable and displaceable in the diameter direction of the pipe line P.

106. 发明专利

JP2001099387A REGENERATING AND REPAIRING CONSTRUCTION METHOD FOR EXISTING PIPELINE 失效
公开(公告)号：JP2001099387A
公开(公告)日：2001-04-10
申请号：JP27518599
申请日：1999-09-28
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , SHIMIZU SEITA
IPC分类号： B05D7/22 , F16L55/16
摘要： PROBLEM TO BE SOLVED: To provide a regenerating and repairing construction method for an existing pipeline capable of maintaining liquefaction of a resin material at a lining position in view of a problem when a lining execution is performed by using the resin material with high melting point and continuously performing a lining execution, regardless of length of a regenerating and repairing section. SOLUTION: In a construction method for regenerating and repairing an existing pipeline buried under a road, the construction method is characterized by being provided with a lining film forming means 2 provided with an injection part 2A movable in a regenerating and repairing section within the existing pipeline 1 and a resin storing means 3 capable of supplying thermoplastic resin for which a melting state is maintained just before a lining to the lining film forming means 2, spraying thermoplastic resin of the melting state supplied to the lining film forming means 2 to an inside face of the existing pipeline and hardening sprayed thermoplastic resin by utilizing a temperature drop.

107. 发明专利

JP2001099354A EXISTING PIPELINE REPLACEMENT SYSTEM 失效
公开(公告)号：JP2001099354A
公开(公告)日：2001-04-10
申请号：JP27518699
申请日：1999-09-28
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , SHIMIZU SEITA
IPC分类号： F16L1/024
摘要： PROBLEM TO BE SOLVED: To provide an existing pipeline replacement system capable of safely and stably supplying the gas after the replacement while securing the durability without raising the cost to be required for the replacement work. SOLUTION: This system is for replacing an existing pipeline for supplying the gas from a part near the main or a branch pipe through a cut valve. This system is provided with a new pipeline 5 to be inserted in a pipeline replacement block of an existing pipeline 4 and having a diameter smaller than that of the existing pipeline 4, a pressure raising means 6 for raising the pressure of the gas in the new pipeline 5, a means R for adjusting the gas, of which pressure is raised, to the pressure of a service area of the gas, and a supplying condition monitor means 7 provided in a block of the existing pipeline 4, in which the new pipeline 5 is inserted. The supplying condition monitor means 7 detects a change of the gas concentration inside of the replacement block, in which the new pipeline 5 is inserted, and closes the cut valve when the gas concentration inside of the replacement block reaches the predetermined concentration or more, and generates an alarm.

108. 发明专利

JP2001096224A METHOD OF REGENERATING AND REPAIRING EXISTING PIPE LINE 失效
公开(公告)号：JP2001096224A
公开(公告)日：2001-04-10
申请号：JP27518399
申请日：1999-09-28
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , ITAGAKI MASAAKI , SHIMIZU SEITA
IPC分类号： B05D7/22 , B05C7/08 , F16L55/16
摘要： PROBLEM TO BE SOLVED: To provide a method of repairing an existing pipe line in which a lining work inexecutable section does not appear through the whole zone of a branched pipe from a branched position. SOLUTION: A supporting member 3A inserted into the branched pipe 2 and having a shape caught at a bend part 2A, a lining pig 3 attached to the supporting member 3A and capable of being in contact with the inside of the bend part 2A and a free pig 4 movable independently to the lining pig 3 are prepared, the supporting member 3A and the lining pig 3 are interrupted in the movement from the branched position to the main pipe 1 by being caught by the bend part 2A at the time of inserting the lining pig 3 into the branched pipe, the free pig 4 moves toward the branched position side independently from the lining pig 3 in the branched pipe 2 by the suction force when the lining work is executed in the main pipe 1 and as a result, the whole zone from the bend part 2A to the branched position is lined.

109. 发明专利

JP2000337847A SOUNDWAVE TYPE PIPELINE LENGTH MEASURING DEVICE 失效
公开(公告)号：JP2000337847A
公开(公告)日：2000-12-08
申请号：JP15204399
申请日：1999-05-31
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , ITAGAKI MASAAKI , MORITA KENJI
IPC分类号： G01B17/00
摘要： PROBLEM TO BE SOLVED: To accurately and simply measure the pipeline length for every section, with a branch part of a pipeline as a border. SOLUTION: A peak value is detected from a waveform output obtained from a reflection wave by a peak value detecting means 32. A value extracted as the peak value of waveform output is compared with a reference value whose setting can be changed. A peak value above the reference value is further extracted. The extracted peak value and a time-lapse corresponding to the peak value are stored in a storage means 35 temporarily. The time-lapse stored in the storage means 35 is converted into a distance data, and outputted to a display means 37, etc., in descending order of peak value level corresponding to it.

110. 发明专利

JPH11245301A REPAIR METHOD FOR ALREADY INSTALLED DUCT 失效
公开(公告)号：JPH11245301A
公开(公告)日：1999-09-14
申请号：JP4766098
申请日：1998-02-27
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , ITAGAKI MASAAKI , MORITA KENJI
IPC分类号： F16L55/16 , B05D7/14 , B05D7/22 , B05D7/24 , B29C63/36 , B29L23/00
摘要： PROBLEM TO BE SOLVED: To shorten the construction time, and at the same time, prevent the cost from increasing and facilitate the procedures of the work when the bonding capability of a tube to be bonded in an installed pipe is lowered by inverting the lining. SOLUTION: From an opening 1a at one end of an already installed duct 1 which is buried under the ground, leading pigs 3, 4, a water absorbent C and a required amount of a plug-form adhesive 5 which is applied on the internal wall surface of the duct are positioned in the duct, and are introduced into the pipe, and at a rear step of the plug form adhesive 5, the leading end of a lining tube 6 is fixed to the opening 1a at one end of the duct under a state being inverted and introduced, and a suction device 9 is arranged at an opening 1b on the other end of the duct, and by generating a negative pressure in the duct by the suction device 9, the leading pigs 3, 4, the water absorbent 5 and the lining tube 6 are moved to the other end side of the duct continuously, and in this process, the lining 6 is affixed to the internal wall surface of the duct.

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