WO1992013226A1 - Outil et procede de remplacement de conduits souterrains - Google Patents

Outil et procede de remplacement de conduits souterrains Download PDF

Info

Publication number
WO1992013226A1
WO1992013226A1 PCT/SE1991/000881 SE9100881W WO9213226A1 WO 1992013226 A1 WO1992013226 A1 WO 1992013226A1 SE 9100881 W SE9100881 W SE 9100881W WO 9213226 A1 WO9213226 A1 WO 9213226A1
Authority
WO
WIPO (PCT)
Prior art keywords
tool
segments
piston
cylinders
pipe
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE1991/000881
Other languages
English (en)
Inventor
Henrik Persson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO1992013226A1 publication Critical patent/WO1992013226A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
    • F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
    • F16L55/1658—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section the old pipe being ruptured prior to insertion of a new pipe
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring
    • E21B7/30—Enlarging drilled holes, e.g. by counterboring without earth removal

Definitions

  • the present invention relates to a tool and means for replacement of underground ducts, by which existing ducts are lined with new pipes, preferably 6 to 12 m long PEH pipes, which are welded together above ground, and by which the lining pipe is advanced by the tool restoring the existing pipe to circular cross section form or expand the same to a bigger diameter.
  • the tool is self-propelled.
  • one object with the present invention is to provide a tool and operation mode by which it is possible to break pipes with a diameter down towards about 150 mm, while tools of the same configuration can be used for bigger dia ⁇ meters as well.
  • Another object is to provide a shorter tool then used at present, where it has proved that a suitable length is about 60 cm.
  • Yet another object with the present invention is to provide a operation mode and a tool, by which the influence on the surroundings of the existing pipe is as small as possible.
  • Fig. 1 shows one embodiment of the tool for replacement of underground ducts according to the invention.
  • Fig. 2 shows a longitudinal section of the breaking part of the tool.
  • Fig. 3 shows a longitudinal section of the connection part of the tool.
  • Figs. 4 and 5 show a section taken along the lines IV-IV and V-V, respectively, in Fig. 2 and with the piston removed.
  • Fig. 6 shows the tool according to the invention in longitudinal section, with the breaking part and the connec ⁇ tion part assembled.
  • the tool consists of a connection part 24 and a breaking part 25.
  • the connection part 24 consists of a pipe connection part 15 and a feed piston 13.
  • the breaking part 35 has four break segments 1.
  • the breaking part 25 is built round a body 26 with through oil passages 11, 34, 35, 36 and uses the square inner space completely.
  • the piston rod is made in one piece.
  • the break segments 1 are supported in a number of links 3-5 and the tool can be made to form different outer diameters by dis ⁇ placement of the segments 1 outwardly or inwardly.
  • the dis ⁇ placement of the break segments 1 is accomplished by lifting links 4 mounted via shafts 30 in a hydraulic double piston 2.
  • the function of the other links in form of link arms 3, 5 is to support the control of the break segments 1.
  • the piston 2 is double in that aspect that it is supported in two cylin ⁇ ders 9, 10 with a common piston rod. These cylinders 9, 10 are connected in such a way that when the pressure in one cylinder is acting on the piston rod side the pressure is acting on the side without piston rod in the other cylinder. This means that the maximal force from the piston 2 is independent of in which direction the piston moves, and, thus, is the same size in both directions.
  • the design of the cylinders plays an important part of the invention as these give the body 26 the required strength after assembly.
  • the design of the lifting links 4 gives mini ⁇ mal distance between the link shafts and utilizes the stroke to the maximum.
  • All cylinders 9, 10, 14 are feed through hydraulic tubes 7 attached to the tool in an end 21 at one short end.
  • the hydraulic tubes 7 are pressurized and depressurized in a suitable way by hydraulic valves (not shown) .
  • hydraulic valves not shown
  • the oil passages 11, 34, 35, 36 of the tool are through passages.
  • the piston rod of the double acting piston 2 has a general square cross section in the cavity 12 of the body 26 between the cylinders, where it furthermore has four projections 22 in planes squarelly arranged in relation to each other.
  • the cavity 12 of the body 26 has a cross section adopted to the cross section of the piston rod.
  • the part of the piston rod moving in the cylinder 9, 10 has a circular cross section.
  • the lifting links 4 transmitting the piston movement to the segments 1 are attached to said projections 22 of the piston, respectively.
  • cover elements 6 may be arranged between the segments 1 and the body 26 of the tool, the cover elements 6 have pins 29 quided in slots 39 in the sides of the lifting links 4, whereby the cover elements 6 accompany in the movement of these links 4.
  • cover elements 6 may be arranged covering the outer parts of the cover elements.
  • seals 19 e.g. in form of O- rings, are arranged at every pressure fluid connection, piston, cylinder and possible further spaces which are to be sealed.
  • link arms 3, 5 The purpose of the link arms 3, 5 is to stabilize the movement of the break segments 1 and thereby reduce the wear and tear of the shafts of the lifting links. These link arms 3, 5 are mounted, through shafts 30, partly in the break seg ⁇ ments 1 and partly in the body 26 of the tool.
  • the tool may be used both with and without pipe connec ⁇ tion part 24. If the connection part is not used the tool is furnished with an end 20. With the connection part 24 mounted the operating cycle of the tool will be as stated below.
  • the break segments 1 will be forced outwardly and restor the existing pipe to a circular form or increase the diameter of i .
  • the piston rod side of the pipe feeding cylinder 14 is pressurized, whereby the pipe 16 is feed forward towards the tool.
  • the next step will be to pressurize the cylinders 9, 10 of the double piston 2 in order for the piston to move to the right in the view showed in Fig. 2, and whereby the segments 1 are brought back to the tool .
  • the piston rod 13 of the feeding cylinder 14 is moveably supported in a recess 17 in the pipe connection part 15 and by a number of balls 18, this in order to avoid locking, wear and tear or other problems, partly as the tool always lies in the bottom of the existing pipe, due of course to the gravi ⁇ tation, when the segments 1 are brought in toward the tool, and partly due to settlings in the existing pipe line.
  • the tool according to the present embodiment is chiefly intended for use by lining with new pipes consisting of so- called PEH pipes which are soft pipes and normally about 6-12 m long. Hereby must a special descent shaft be digged adjacent the well. These PEH pipes are connected by welding above ground. However, it is possible to use the present tool also for stiff short pipes, e.g. so-called GAP pipes which usually are about 30 to 60 cm long, and it is then possible to go down by the existing well, as is previously known.
  • Existing ducts are lined with new PEH pipes which are 6-12 m long and flexible. These pipes 16 are welded together above ground.
  • the new pipe is advanced by the tool, as described above, in an operating cycle which also includes restoring of the existing pipe to circular form or the expan ⁇ sion of the same to a large diameter.
  • the counter force wire 8 and the hydraulic tubes 7 rise over a guide pulley 32 through a well and to a cable pulley 23 above ground. While the wire is wound on the cable pulley 23 the pulley only acts as a guide pulley for the hydraulic tubes 7 which goes on to the hydraulic control consisting of valves, pump, reservoir etc.
  • the cable pulley 23 has a reverse stop which means that the wire 8 can be kept stretched all the time and that it is possible to avoid that the tool reciprocate without advancing the pipe 16 if the force exercised by the break segments 1 of the tool against the walls of the existing pipe is not enough to advance the pipe. As the wire is only intended as an extra precaution the tool is in principal self-propelled.
  • the break segments 1 have a front part la and a rear part lb with the same axial extension, but the rear part lb is somewhat raised and, thus, has a larger diameter.
  • the stroke length of the feeding cylinder 14 is half the axial length of the break segment, or in other words the same as the length of respective parts la and lb of the break segments.
  • passages 11, 34, 35, 36 of the tool are through passages and furthermore double, i.e. the eight passages 11, 34, 35, 36 shown in the embodiment could be replaced by only four passages.
  • the projections 22 of the piston 2 is seen as forming a systems of coordinates as seen in Fig. 5, then the passages 34, 11 in the first and fourth quadrant, respective- ly, lead to the different sides of the double piston 2.
  • the passages 34 lead to the piston rod free side in one cylinder and to the piston rod side in the other cylinder, while the passages 11 lead to the other sides of the cylinders 9, 10.
  • the different cylinders are controlled in such a way that the feeding cylinder 14 is only operated when the double piston is at its extrems, i.e. pipe advancing will only take place when the tool is fully expanded, while the tool advancing will only take place when the segments 1 are adjacent to the tool body 26.
  • the structure of the break segments 1 gives an expansion of the existing ducts in two steps. Even if the displaced length of the break segments 1 is restricted by the stroke length of the feeding cylinder 14 the expansion takes place over the total axial length of the segments 1.
  • the location of the links in the longitudinal direction of the break segments 1 gives a better load carrying, whereby it has been possible to reduce the thickness of the material for the segments 1.
  • the link arms 3, 5 are located in front of each other vertically, while they are axially displaced.
  • the number of link arms 3, 5 and the number of lifting links 4 can be varied depending on the diameter and the number of cylinders.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

La présente invention se rapporte à un outil et un dispositif de remplacement de conduits souterrains. L'outil, qui est en général autopropulseur, se compose d'une partie de rupture (25) et d'une partie de raccordement (24) de tuyau. L'outil fonctionne de manière hydraulique sur des tubes hydrauliques (7). La partie de rupture (25) comprend des segments de rupture (1) dont le rayon augmente par étapes et la partie de raccordement (24) de tuyau comprend un cylindre d'alimentation (14). Un ou plusieurs pistons doubles (2) sont fixés aux segments (1) par des articulations de levage (4). Chaque double piston (2) se déplace dans deux cylindres (9, 10) qui sont reliés de telle façon que lorsque la pression agit sur le côté de la tige de piston dans l'un des cylindres, la pression dans l'autre cylindre agit sur le côté opposé de la tige de piston et vice versa. Le positionnement de nouveaux tuyaux (16) s'effectue selon le cycle opérationnel suivant: la partie de rupture (25) est tout d'abord élargie radialement vers l'extérieur, de sorte que le tuyau existant retrouve sa coupe transversale circulaire ou est élargie de façon à présenter un plus grand diamètre. Puis, le cylindre d'alimentation va amener le nouveau tuyau (16). A ce moment, un fil métallique (8) va agir comme une force conttraire additionnelle afin d'aider l'outil, qui est élargi de façon à être en contact avec le tuyau existant. Lorsque le nouveau tuyau (16) a été amené vers l'avant, les segments de rupture reprennent leur position initiale, de sorte que le diamètre de l'outil va être réduit, après quoi l'outil est amené en avant. Ceci termine le cycle opérationnel, et ainsi, la prochaine étape consistera à élargir radialement l'outil.
PCT/SE1991/000881 1991-01-17 1991-12-19 Outil et procede de remplacement de conduits souterrains Ceased WO1992013226A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9100146A SE9100146L (sv) 1991-01-17 1991-01-17 Verktyg och foerfarande foer foernyelse av markfoerlagda roerledningar
SE9100146-1 1991-01-17

Publications (1)

Publication Number Publication Date
WO1992013226A1 true WO1992013226A1 (fr) 1992-08-06

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Family Applications (1)

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PCT/SE1991/000881 Ceased WO1992013226A1 (fr) 1991-01-17 1991-12-19 Outil et procede de remplacement de conduits souterrains

Country Status (3)

Country Link
AU (1) AU9163391A (fr)
SE (1) SE9100146L (fr)
WO (1) WO1992013226A1 (fr)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0735303A1 (fr) * 1995-03-31 1996-10-02 Tracto-Technik Paul Schmidt Spezialmaschinen Procédé de pose de canalisations enterrées entre des regards d'égout
DE29509906U1 (de) * 1995-06-19 1996-10-17 Siemens AG, 80333 München Spreizzylinder
GB2362405A (en) * 2000-05-18 2001-11-21 Western Well Tool Inc Gripper assembly for downhole tractors
US6443657B1 (en) 1995-07-11 2002-09-03 Tt Technologies, Inc. Method of installing or replacing underground pipe
US6715559B2 (en) 2001-12-03 2004-04-06 Western Well Tool, Inc. Gripper assembly for downhole tractors
US6896077B1 (en) 2002-11-04 2005-05-24 The Charles Machines Works, Inc. Rotary driven pipe-bursting tool
GB2427454A (en) * 2005-06-21 2006-12-27 Kenneth Latimer Scott Cutter or reamer device for renewing pipelines
US7174974B2 (en) 1998-12-18 2007-02-13 Western Well Tool, Inc. Electrically sequenced tractor
GB2440627A (en) * 2005-06-21 2008-02-06 Kenneth Latimer Scott Apparatus for use in renewing or replacing drain pipes or service ducts
GB2440626A (en) * 2005-06-21 2008-02-06 Kenneth Latimer Scott Apparatus for use in renewing or replacing drain pipes or service ducts
US7392859B2 (en) 2004-03-17 2008-07-01 Western Well Tool, Inc. Roller link toggle gripper and downhole tractor
US7624808B2 (en) 2006-03-13 2009-12-01 Western Well Tool, Inc. Expandable ramp gripper
US9447648B2 (en) 2011-10-28 2016-09-20 Wwt North America Holdings, Inc High expansion or dual link gripper
US9488020B2 (en) 2014-01-27 2016-11-08 Wwt North America Holdings, Inc. Eccentric linkage gripper
US10876380B2 (en) 2013-06-17 2020-12-29 Maersk Olie Og Gas A/S Sealing a bore or open annulus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149528A1 (fr) * 1984-01-19 1985-07-24 British Gas Corporation Dispositif pour le remplacement de conduits
SE450969B (sv) * 1985-11-25 1987-08-17 Entreprenad Ab E & G Jonsson Sett for renovering av markforlagda rorledningar
US4955755A (en) * 1988-06-10 1990-09-11 Frey Andre F Device for the in situ repair of a pipe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0149528A1 (fr) * 1984-01-19 1985-07-24 British Gas Corporation Dispositif pour le remplacement de conduits
SE450969B (sv) * 1985-11-25 1987-08-17 Entreprenad Ab E & G Jonsson Sett for renovering av markforlagda rorledningar
US4955755A (en) * 1988-06-10 1990-09-11 Frey Andre F Device for the in situ repair of a pipe

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0735303A1 (fr) * 1995-03-31 1996-10-02 Tracto-Technik Paul Schmidt Spezialmaschinen Procédé de pose de canalisations enterrées entre des regards d'égout
DE29509906U1 (de) * 1995-06-19 1996-10-17 Siemens AG, 80333 München Spreizzylinder
US6443657B1 (en) 1995-07-11 2002-09-03 Tt Technologies, Inc. Method of installing or replacing underground pipe
US7185716B2 (en) 1998-12-18 2007-03-06 Western Well Tool, Inc. Electrically sequenced tractor
US7174974B2 (en) 1998-12-18 2007-02-13 Western Well Tool, Inc. Electrically sequenced tractor
US7048047B2 (en) 2000-02-16 2006-05-23 Western Well Tool, Inc. Gripper assembly for downhole tools
US7275593B2 (en) 2000-02-16 2007-10-02 Western Well Tool, Inc. Gripper assembly for downhole tools
US6640894B2 (en) 2000-02-16 2003-11-04 Western Well Tool, Inc. Gripper assembly for downhole tools
US7191829B2 (en) 2000-02-16 2007-03-20 Western Well Tool, Inc. Gripper assembly for downhole tools
US6464003B2 (en) 2000-05-18 2002-10-15 Western Well Tool, Inc. Gripper assembly for downhole tractors
US9988868B2 (en) 2000-05-18 2018-06-05 Wwt North America Holdings, Inc. Gripper assembly for downhole tools
GB2362405B (en) * 2000-05-18 2004-11-03 Western Well Tool Inc Gripper assembly for downhole tools
US7604060B2 (en) 2000-05-18 2009-10-20 Western Well Tool, Inc. Gripper assembly for downhole tools
US9228403B1 (en) 2000-05-18 2016-01-05 Wwt North America Holdings, Inc. Gripper assembly for downhole tools
US8944161B2 (en) 2000-05-18 2015-02-03 Wwt North America Holdings, Inc. Gripper assembly for downhole tools
GB2362405A (en) * 2000-05-18 2001-11-21 Western Well Tool Inc Gripper assembly for downhole tractors
US6715559B2 (en) 2001-12-03 2004-04-06 Western Well Tool, Inc. Gripper assembly for downhole tractors
US6896077B1 (en) 2002-11-04 2005-05-24 The Charles Machines Works, Inc. Rotary driven pipe-bursting tool
US7353889B1 (en) 2002-11-04 2008-04-08 The Charles Machine Works, Inc. Rotary driven pipe-bursting tool
US7392859B2 (en) 2004-03-17 2008-07-01 Western Well Tool, Inc. Roller link toggle gripper and downhole tractor
US7607497B2 (en) 2004-03-17 2009-10-27 Western Well Tool, Inc. Roller link toggle gripper and downhole tractor
GB2427454B (en) * 2005-06-21 2008-12-03 Kenneth Latimer Scott Apparatus for use in renewing or replacing drain pipes or service ducts
GB2440626B (en) * 2005-06-21 2009-11-18 Kenneth Latimer Scott Apparatus for use in renewing or replacing drain pipes or service ducts
GB2440626A (en) * 2005-06-21 2008-02-06 Kenneth Latimer Scott Apparatus for use in renewing or replacing drain pipes or service ducts
GB2440627A (en) * 2005-06-21 2008-02-06 Kenneth Latimer Scott Apparatus for use in renewing or replacing drain pipes or service ducts
GB2440627B (en) * 2005-06-21 2009-08-12 Kenneth Latimer Scott Apparatus for use in renewing or replacing drain pipes or service ducts
GB2427454A (en) * 2005-06-21 2006-12-27 Kenneth Latimer Scott Cutter or reamer device for renewing pipelines
US7624808B2 (en) 2006-03-13 2009-12-01 Western Well Tool, Inc. Expandable ramp gripper
US9447648B2 (en) 2011-10-28 2016-09-20 Wwt North America Holdings, Inc High expansion or dual link gripper
US10876380B2 (en) 2013-06-17 2020-12-29 Maersk Olie Og Gas A/S Sealing a bore or open annulus
US9488020B2 (en) 2014-01-27 2016-11-08 Wwt North America Holdings, Inc. Eccentric linkage gripper
US10156107B2 (en) 2014-01-27 2018-12-18 Wwt North America Holdings, Inc. Eccentric linkage gripper
US10934793B2 (en) 2014-01-27 2021-03-02 Wwt North America Holdings, Inc. Eccentric linkage gripper
US11608699B2 (en) 2014-01-27 2023-03-21 Wwt North America Holdings, Inc. Eccentric linkage gripper
US12024964B2 (en) 2014-01-27 2024-07-02 Wwt North America Holdings, Inc. Eccentric linkage gripper
US12331605B2 (en) 2014-01-27 2025-06-17 Wwt North America Holdings, Inc. Eccentric linkage gripper

Also Published As

Publication number Publication date
SE467171B (sv) 1992-06-01
SE9100146L (sv) 1992-06-01
SE9100146D0 (sv) 1991-01-17
AU9163391A (en) 1992-08-27

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