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1. 发明专利

JPH11310942A LINING CONSTRUCTION METHOD OF EXISTING PIPE LINE 失效
公开(公告)号：JPH11310942A
公开(公告)日：1999-11-09
申请号：JP12061198
申请日：1998-04-30
申请人： TOOSETSU KK , NISSEI KK , HAKKO CO , TOKYO GAS CO LTD
发明人： SUGANO YOSHIHIRO , IWASAKI HARUO , MOTOMURA KAZUNORI , HIRABAYASHI KAZUYA , OSHIMA KENJI , KUBO YUKIFUMI , HOSHINO HIDENOBU
IPC分类号： E03C1/01 , B08B9/02 , E03C1/122
摘要： PROBLEM TO BE SOLVED: To provide the lining construction method of an existing pipe line, in which the flow of drain is not hindered by forming a uniformly thick film by sufficiently ensuring a pressure required for pneumatic conveyance. SOLUTION: In the lining construction method for conducting reclamation repair by coating the internal surface of the existing pipe line 2 with a resin liquid, a suction air-blasting device 5 is connected at one end in the laying direction of the existing pipe line 2 and the inside of the pipe line is kept in a negative pressure or a positive pressure, and the sectional area of a space constituting the passage of the resin liquid is made smaller than that of the inside of the existing pipe line and a core member 6 setting an opening between the core member 6 and the internal surface of the existing pipe line at a small value is arranged into the existing pipe line 2. The speed of pneumatic conveyance in the resin-liquid passage placed in the opening between the core member 6 and the internal surface of the pipe line when the pneumatic conveyance of the resin liquid is performed by an airflow from the suction air-blasting device 5 is made higher than the normal time, and the resin liquid can be applied extending over the whole region of the laying range of the pipe line 2.

2. 发明专利

JP2000051804A CLEANING TECHNIQUE FOR EXISTING PIPELINE 失效
公开(公告)号：JP2000051804A
公开(公告)日：2000-02-22
申请号：JP23047198
申请日：1998-08-17
申请人： TOKYO GAS CO LTD , TOOSETSU KK , HAKKO CO , NISSEI KK
发明人： HOSHINO HIDENOBU , SUGANO YOSHIHIRO , IWASAKI HARUO , OSHIMA KENJI , KUBO YUKIFUMI , MOTOMURA KAZUNORI , HIRABAYASHI KAZUYA
IPC分类号： B08B9/02
摘要： PROBLEM TO BE SOLVED: To provide a cleaning technique for an existing pipeline by which deposit in the pipeline can be approximately completely removed without bringing about increase in cost. SOLUTION: In a cleaning technique for an existing pipeline which removes deposit in the inner face of the pipeline with an abrasive carried by air flow on the inner face of the existing pipeline, a suction device is connected with one end part in the laid direction of the above described existing pipeline and a drawing member 10 extended in the above described existing pipeline and a rotatable rotating blades 11 arranged at specified intervals in the extended direction of this drawing member 10 are arranged and the rotating blades 11 are rotated by the air flow in the pipeline generated by making the inside of the above described existing pipeline to a negative pressure by the above described suction and the abrasive is introduced in the existing pipeline to bring the abrasive into contact with the inner face of the existing pipeline by means of a centrifugal force of the rotating blades 11.

3. 发明专利

JPH11310953A CLEANING METHOD OF EXISTING PIPE LINE 失效
公开(公告)号：JPH11310953A
公开(公告)日：1999-11-09
申请号：JP12061098
申请日：1998-04-30
申请人： TOOSETSU KK , NISSEI KK , HAKKO CO , TOKYO GAS CO LTD
发明人： SUGANO YOSHIHIRO , IWASAKI HARUO , MOTOMURA KAZUNORI , HIRABAYASHI KAZUYA , OSHIMA KENJI , KUBO YUKIFUMI , HOSHINO HIDENOBU
IPC分类号： E03F7/00 , B08B9/02
摘要： PROBLEM TO BE SOLVED: To provide the cleaning method of an existing pipe line, by which the internal surface of the pipe line is abraded uniformly by equalizing the state of discharge of housed abrasives by a simple constitution and making the state of supply of the abrasives into the pipe line uniform. SOLUTION: Scale on the internal surface of the existing pipe line 3 is removed by abrasives S carried by an air flow. A suction air blower 5 is connected at one end section in the direction of the laying of the existing pipe line 3 at that time, the inside of the pipe is forced to be in the tendency of negative pressure, the housing section 8 of the abrasives S communicating with the existing pipe line 3 is arranged at one end in the direction of the laying of the existing pipe line 3, and the outside air is taken in from an opening 9A formed to the housing section 8 of the abrasives S in response to a change into negative pressure of the inside of the existing pipe line 3 by the suction air blower 5 and the abrasives S are discharged and carried by an air flow in the pipe line 3 in the housing section 8 of the abrasives S.

4. 发明专利

JP2004116784A Removal method of underground pipe 审中-公开
公开(公告)号：JP2004116784A
公开(公告)日：2004-04-15
申请号：JP2004000366
申请日：2004-01-05
申请人： Hakko Co Ltd , 株式会社ハッコー
发明人： KOGA MOTOYUKI , YUKI ISAMU , KUBO YUKIFUMI , IGARASHI MITSURU
IPC分类号： F16L1/024
摘要： PROBLEM TO BE SOLVED: To solve the problem that in pulling out a remaining unnecessary pipe put in the buried state, the pipe body is accidentally broken in the midway not to be pulled out. SOLUTION: The terminal end of the remaining unnecessary pipe 2 formed of a flexible pipe such as a lead pipe separated from a conduit 1 is exposed to the inside of a digging pit A and opened. A core wire rod 3 such as a wire and rod having required tensile strength is passed from the opening part through the inside of the pipe 2 to be removed, and then filling material 4 such as resin or mortar having the property of adhesion between the core wire rod 3 and the pipe body is injected into the pipe 2 to integrate the core wire rod 3 with the pipe body. After the filling material 4 is hardened, the terminal end of the unnecessary pipe 2 with which the core wire rod 3 is integrated is chuck to a pulling device 8 to be pulled out while being towed, and then drawn out as it is without cutting to the outside of the work pit A. COPYRIGHT: (C)2004,JPO

5. 发明专利

JPH08128566A REMOVING WORK METHOD FOR BURIED LEAD PIPE 失效
公开(公告)号：JPH08128566A
公开(公告)日：1996-05-21
申请号：JP26511094
申请日：1994-10-28
申请人： HAKKO CO
发明人： KOGA MOTOYUKI , YUKI ISAMU , KUBO YUKIFUMI , IGARASHI MITSURU
IPC分类号： F16L1/024
摘要： PURPOSE: To prevent a pipe body from being accidentally torn in the middle when a buried unnecessary service pipe using a lead pipe is pulled out so as to surely extract the pipe body. CONSTITUTION: A terminal end of an unnecessary service pipe separated from a conduit line 1 is exposed in an excavation pit A so as to be opened, and from this opening part, a core wire material 3 such as a wire and a rod provided with desired tensile strength is passed through vertically into a pipe to be removed, and then, a heating medium (heating element) is introduced into the pipe so as to melt a pipe body, and as a result, the core wire material 3 and the pipe body are integrated, and subsequently, the terminal end of the unnecessary service pipe 2 is clamped by means of an extracting device 8 so as to be pulled out.

6. 发明专利

JPH08128565A REMOVING WORK METHOD FOR BURIED PIPE 失效
公开(公告)号：JPH08128565A
公开(公告)日：1996-05-21
申请号：JP26510994
申请日：1994-10-28
申请人： HAKKO CO
发明人： KOGA MOTOYUKI , YUKI ISAMU , KUBO YUKIFUMI , IGARASHI MITSURU
IPC分类号： F16L1/024
摘要： PURPOSE: To carry out extracting action of an unnecessary pipe and mortar filling into a hollow hole generated by extraction at the same time when a buried remaining unnecessary pipe is pulled out and removed. CONSTITUTION: A working pit A is excavated on the terminal end side of a remaining unnecessary pipe 2 separated from a conduit line 1, the terminal end side of the unnecessary pipe 2 is exposed to be opened in the inside of the pit A, the pipe end is clamped by means of an extracting device 3 arranged in the pit A, and a working condition for extracting action is prepared, while an injection hose 4 for filler B such as mortar is connected to an opening part in the pipe end, and then, the filler B is fed interlockingly with the extracting action. In this way, the filler B flows out to the side opposite to the extracting direction through the inside of the unnecessary pipe 2 to be extracted, and an extracting process and sequent injection of the filler B into a hollow hole 7, which is generated by extraction, in the ground are carried out at the same time.

7. 发明专利

JPH08128564A REMOVING WORK METHOD FOR BURIED PIPE 失效
公开(公告)号：JPH08128564A
公开(公告)日：1996-05-21
申请号：JP26510894
申请日：1994-10-28
申请人： HAKKO CO
发明人： KOGA MOTOYUKI , YUKI ISAMU , KUBO YUKIFUMI , IGARASHI MITSURU
IPC分类号： F16L1/024
摘要： PURPOSE: To prevent a pipe body from being accidentally torn in the middle when a buried remaining unnecessary pipe is pulled out so as to surely extract the pipe body. CONSTITUTION: A terminal end of a remaining unnecessary pipe 2 separated from a conduit line 1 is exposed and opened in the inside of an excavation pit A, and from the opening part, a core wire material 3 such as a wire and a rod provided with necessary tensile strength is passed through into the pipe 2 to be removed, and then, a filler material 4 such as resin and mortar provided with an adhering properly for the core material 3 and a pipe body is filled in the pipe 2 so as to integrate the core material 3 and the pipe body together. After hardening the filler material 4, the terminal end of the unnecessary pipe 2 with which the core material 3 is integrated is chucked by means of an extracting device 8 so as to be towed, and extraction is carried.

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