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91. 发明专利

JPH09241602A ADHESIVE COMPOSITION FOR INNER FACE OF PIPELINE 失效
公开(公告)号：JPH09241602A
公开(公告)日：1997-09-16
申请号：JP4777796
申请日：1996-03-05
申请人： TOKYO GAS CO LTD , THREE BOND CO LTD , THREE BONDO UNICOM KK
发明人： TOYODA SHIGERU , YAGI SHUICHI , ITAGAKI MASAAKI , SATO YUKIO , ARAKADO KIYOSHI
IPC分类号： B29C63/36 , B29L23/00 , C09J163/00 , F16L55/165
摘要： PROBLEM TO BE SOLVED: To obtain an adhesive composition useful for an inversion wall lining method performing maintenance or repairing as a countermeasure for deterioration or breakage to existing piping for such as a gas or a water pipe by mixing an epoxy resin, a thixotropic agent, a lubricant and hardener. SOLUTION: This adhesive composition is composed of (A) an epoxy resin (preferably a bisphenol-A type epoxy resin or bisphenol-F type epoxy resin, or their mixture), (B) a thixotropic agent containing fine powder silica as a main component, (C) a lubricant containing spherical fine particle (preferably having

92. 发明专利

JPH09225398A METHOD OF LINING LAID PIPELINE 失效
公开(公告)号：JPH09225398A
公开(公告)日：1997-09-02
申请号：JP4176596
申请日：1996-02-28
申请人： TOKYO GAS CO LTD
发明人： TOYODA SHIGERU , YAGI SHUICHI , ITAGAKI MASAAKI
IPC分类号： B05D7/22 , B29C63/26 , B29C63/36
摘要： PROBLEM TO BE SOLVED: To enable a main pipe and a branching pipe to be simutaneously regenerated. SOLUTION: A lining pig 4, a mass of lining resin (A) and a resin conveyor pig 5 are introduced into a pipe through a first opening 1a and a lining tube 14 which is turned inside out is inserted into the pipe through the first opening (A) after the resin conveyor pig 5, and hydraulic pressure is applied to an interior of the lining tube, which is then brought into contact with an inner wall surface of a main pipe 1 in such a manner as to close a branching opening 2, and the pig 4, the mass of the lining resin (A) and the pig 5 are transferred to a second opening 1b side at a potion where the tube is turned inside out, and a suction pump 33 and a resin supplying means 34 are communicatively connected to a selector valve 32 fitted in an opening 31 of the branching pipe and the suction pump is driven to evacuate an interior of the branching pipe so that a mass of the resin (B) is introduced up to the branching opening 2 to thereby form a lining resin film on an inner wall of the branching pipe, and the tube which is in contact with the inner wall surface of the main pipe is recovered, and the pig 4, the mass of the resin (A) and the pig 5 are moved toward the first opening side to form a lining resin film along the inner wall surface of the main pipe 1.

93. 发明专利

JPH09203684A METHOD FOR DETECTING LEAKAGE OF ALREADY LAID PIPE LINE SYSTEM 失效
公开(公告)号：JPH09203684A
公开(公告)日：1997-08-05
申请号：JP1212096
申请日：1996-01-26
申请人： TOKYO GAS CO LTD
发明人： TOYODA SHIGERU , YAGI SHUICHI , ITAGAKI MASAAKI
IPC分类号： G01M3/00 , F17D5/04 , G01M3/26 , G01M3/28
摘要： PROBLEM TO BE SOLVED: To set a passage section to be inspected in a pipe line comparatively long and to determine a position where leakage occurs in the pipe line system particularly having lots of bent sections with accuracy. SOLUTION: A pipe inner pressure detecting means 16 having a pressure meter 17 and a pump means 15 are provided to one opening section so that the inner pressure of the pipe in the section where leakage is to be inspected can be read by means of the pressure meter 17. A soft and flexible tube 6 is inserted into the pipe passage 1 from the other opening section in a condition that the tube is turned over to be inverted. A liquid pressure is applied to an inner section of the inverted tube 6 so that the turned-over/inverted section of the tube 6 is advanced to a prescribed position along the pipe passage by virtue of the pressure. Then, the inner section of the pipe in the section to be inspected is compressed or decompressed by the pump means 15 and the decrease or increase of the inner pressure of the pipe passage 1 is monitored by means of the pressure meter 17 to execute the airtight inspection. The position of turned-over/inverted section of the tube 6 is moved and the airtight inspection is repeated, thereby determining a position where leakage occurs in the pipe passage.

94. 发明专利

JPH09123281A REVERSAL LINING TUBE USED IN REPAIRING METHOD FOR EXISTING PIPE 失效
公开(公告)号：JPH09123281A
公开(公告)日：1997-05-13
申请号：JP28404295
申请日：1995-10-31
申请人： TOKYO GAS CO LTD
发明人： TOYODA SHIGERU , YAGI SHUICHI , ITAGAKI MASAAKI
IPC分类号： B32B1/08 , B29C63/36 , B29L9/00 , B29L23/00 , B32B5/02 , B32B5/16 , B32B25/10
摘要： PROBLEM TO BE SOLVED: To improve insertion properties into a pipe of a lining layer and to make its thickness uniform by allowing a flocking layer to adhere to the internal surface of the pipe so as to become an external layer in the case of reversely introducing a reversal lining tube which has a structure of two layers consisting of an elastomer layer and a flocking layer into an existing pipeline. SOLUTION: The reversal lining tube 20 has a structure of two layers consisting of an elastomer layer 20a and a flocking layer 20b. In the case of reversely introducing the reversal lining tube 20 into an existing pipeline, the flocking layer 20b becomes an external layer and is stuck on the internal surface of the pipe. The elastomer layer 20a is formed of polyurethane having a necessary tensile strength and has a thickness of 0.3-1.5mm. The flocking layer 20b is a fiber layer formed by applying an adhesive on the surface of the elastomer layer 20a and sticking short fiber by electrostatic effect or it the fiber layer formed by applying the adhesive to the elastomer layer 20a and blowing short fiber by air and has a thickness of

95. 发明专利

JPH08174674A METHOD FOR REGENERATION AND REPAIRING OF EXISTING PIPING 失效
公开(公告)号：JPH08174674A
公开(公告)日：1996-07-09
申请号：JP32271094
申请日：1994-12-26
申请人： TOKYO GAS CO LTD
发明人： TOYODA SHIGERU , YAGI SHUICHI , ITAGAKI MASAAKI
IPC分类号： B05D7/22 , B29C63/34 , B29C63/36 , B29L23/00
摘要： PURPOSE: To provide a regeneration and repairing construction method enhanced in maintenance effect and facilitated in execution properties by compounding a resin lining construction method and a lining construction method. CONSTITUTION: In a resin lining construction method of a first process, a resin and a lining pig are introduced into a pipeline 1 from the opening part 1a provided to one end thereof and the pig is moved within the pipeline 1 to form a resin lining film M on the inner surface of the pipeline 1. In a lining construction method of a second process, a lining tube 10 is applied to the resin lining film M formed in the first process.

96. 发明专利

JPH08150363A RESIN TRANSPORTING PIG IN REPAIRING LINING OF EXISTING PIPE 失效
公开(公告)号：JPH08150363A
公开(公告)日：1996-06-11
申请号：JP29473494
申请日：1994-11-29
申请人： TOKYO GAS CO LTD
发明人： TOYODA SHIGERU , YAGI SHUICHI , ITAGAKI MASAAKI
IPC分类号： F16L58/10 , B05C7/08 , B05D7/22 , F16L55/16
摘要： PURPOSE: To reduce the frictional force at the time of transferring a resin plug in a pipe by a liq. stream by dividing the inside of a spherical elastic material equally and spatially symmetrically with plural liq. shielding materials and interposing the plural shielding materials among the plural split faces thus formed. CONSTITUTION: The total weight of a resin plug is transferred to a branch position, 2 on the duct 1 side with one resin transporting pig 4. Namely, the pig 4 is constituted so that the inside of a spherical elastic material 5 is divided into eight sections equally and spatially symmetrically with three liq. shielding materials 6, and the three liq. shielding materials 6 are interposed among three split faces thus formed. Accordingly, since the frictional force with the inner face is low, the mobility of the pig 4 moving in the pipe is improved, and the time necessary for the resin plug to reach the branch position 2 on the duct 1 side is shortened. Further, the frictional force with the inner wall of a pipeline is reduced even in suction lining since the number of pigs is small, and the suction lining is smoothly conducted.

97. 发明专利

JPH08141474A PIG INTRODUCING SYSTEM OF METHOD FOR REPAIRING LINING OF EXISTING PIPE 失效
公开(公告)号：JPH08141474A
公开(公告)日：1996-06-04
申请号：JP29350194
申请日：1994-11-28
申请人： TOKYO GAS CO LTD
发明人： TOYODA SHIGERU , YAGI SHUICHI , ITAGAKI MASAAKI
IPC分类号： F16L58/10 , B05C7/08 , B05D7/22 , F16L55/16
摘要： PURPOSE: To make it possible to move a leveling off pig without dropping this pig into an expanded diameter part over the entire transfer length of the pipe within a resin plug so that the subsequent lining is adequately executed by filling the recess of the reduced diameter part with a preceding resin in the case where the expanded diameter part exists in a pipeline line. CONSTITUTION: The leveling off pig 3 is arranged in such a manner that the pig 3 arrives at the top side of the resin plug in the position where the resin transfer is completed and thereafter, a liquid feed pump 10 is operated to inject the resin A from an above-the-ground aperture 14 into a supply pipe 7 by the liquid pressure. Next, a liquid resin transfer pig 4, a liquid absorbent material 5 and a liquid shielding pig 6 are introduced by the same liquid pressure into the supply pipe 7 and thereafter, the liquid feed pump 10 is operated to suck and pressurize the liquid B in a liquid tank 9 and to inject the liquid into the supply pipe 7, by which the resin A is transferred to a branching position 2. At this time, the resin A preceding to the leveling off pig 3 fills the recess of the expanded diameter part 12 if there is the expanded diameter part 12 on the pipeline during the transfer of the resin and, therefore, the incident that the pigs 3, 4, 6 fall into the recess and are unable to pass this part is prevented.

98. 发明专利

JPH08141473A RESIN INJECTION DEVICE FOR LINING AND REPAIRING EXISTING PIPE 失效
公开(公告)号：JPH08141473A
公开(公告)日：1996-06-04
申请号：JP29349994
申请日：1994-11-28
申请人： TOKYO GAS CO LTD
发明人： TOYODA SHIGERU , YAGI SHUICHI , ITAGAKI MASAAKI
IPC分类号： F16L58/10 , B05C7/08 , B05D7/22 , F16L55/16 , F16L55/18
摘要： PURPOSE: To provide a resin injection device capable of surely preventing phenomenon that liquid stream used as a pressing means for injecting resin into a pipe is intruded into the resin. CONSTITUTION: This resin injection device is provided with a cylindrical main body 20 for storing the resin, an upper side lid member 21 attached to the upper side of the cylindrical main body 20 and having a liquid injection port 21a, a lower side lid member 22 having an extrusion port 22a of the resin A, and two piston members 23, 24 slidable along an inside wall part of the cylindrical main body provided in the cylindrical main body 20 so as to extrude the resin A stored in the cylindrical main body 20 to the pipe line side.

99. 发明专利

JPH08141472A SUCTION DEVICE IN EXISTING PIPE LINING METHOD 失效
公开(公告)号：JPH08141472A
公开(公告)日：1996-06-04
申请号：JP29349894
申请日：1994-11-28
申请人： TOKYO GAS CO LTD
发明人： TOYODA SHIGERU , YAGI SHUICHI , ITAGAKI MASAAKI
IPC分类号： F16L58/10 , B05C7/08 , B05D7/22 , F16L55/16 , F16L55/18
摘要： PURPOSE: To provide a suction device capable of easily confirming whether or not plural pigs have been already recovered from the inside of a pipe at the process of sucking and lining resin by the action of a suction pump. CONSTITUTION: This suction device is constituted of connecting a suction pump 16 for sucking and discharging the liquid injected into a feed pipe at a process time of the preceding stage, a recovery tank 17 for recovering the sucked liquid, a pig stopping device 18 attached to a feed pipe opening part for recovering the pigs used for a lining operation with a feed pipe side via hoses 26, 28, and besides a passing pig detector for detecting the pig when the pig passed through, counting the number of pigs and issuing an alarm is interposed between the pig stopping device 18 and the feed pipe. The passing pig detector is constituted by connecting a detection part 30 to an alarm part 31 with a code 32.

100. 发明专利

JP2003185087A MODIFICATION METHOD FOR OPEN PIPING 审中-公开
公开(公告)号：JP2003185087A
公开(公告)日：2003-07-03
申请号：JP2001386497
申请日：2001-12-19
申请人： TOKYO GAS CO LTD
发明人： YAGI SHUICHI , SHIMIZU SEITA
IPC分类号： F16L58/18 , B05D1/36 , B05D7/14 , B05D7/22 , B05D7/24 , F16L59/14
摘要： PROBLEM TO BE SOLVED: To ensure airtightness in open piping, by preventing damage or degradation of a lining layer caused by heat, in the modification method for the open piping of which surface is exposed to corrosion environment. SOLUTION: The modification method for a pipe 1 of which surface is exposed to space comprises: a step for filling an inner face of the pipe 1 with heat insulation material to form a coating layer 10; and a step for forming a resin lining layer 11 of airtight epoxy resin on the inside of the coated layer 10. As a method for forming the resin lining layer 11, pig lining, air conveyance lining, hydrostatic conveyance lining, or circulating type lining is applicable. Instead of the resin lining layer 11, a lining member for lining may be brought into close contact with the inner face of the heat insulation coating layer 10 as a lining layer, or an insertion pipe may be inserted into the pipe 1 after the heat insulation coating layer 10 is formed. COPYRIGHT: (C)2003,JPO

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