WO1993019321A1 - Appareil permettant la reparation d'oleoducs et procede de reparation y afferent - Google Patents

Appareil permettant la reparation d'oleoducs et procede de reparation y afferent Download PDF

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Publication number
WO1993019321A1
WO1993019321A1 PCT/AU1993/000114 AU9300114W WO9319321A1 WO 1993019321 A1 WO1993019321 A1 WO 1993019321A1 AU 9300114 W AU9300114 W AU 9300114W WO 9319321 A1 WO9319321 A1 WO 9319321A1
Authority
WO
WIPO (PCT)
Prior art keywords
conduit
sheath member
expandable device
radially expandable
radially
Prior art date
Application number
PCT/AU1993/000114
Other languages
English (en)
Inventor
Robert Walter Vowles
Original Assignee
Barry Bros, Specialised Services Pty. Ltd.
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 Barry Bros, Specialised Services Pty. Ltd. filed Critical Barry Bros, Specialised Services Pty. Ltd.
Priority to EP93906381A priority Critical patent/EP0635112A4/fr
Publication of WO1993019321A1 publication Critical patent/WO1993019321A1/fr

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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
    • F16L55/18—Appliances for use in repairing pipes
    • 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
    • F16L55/1645—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a sealing material being introduced inside the pipe by means of a tool moving in the pipe

Definitions

  • This invention relates to apparatus used in the process of refurbishing damaged conduits, pipelines and sewer pipes through the application of a reinforced lining to their inner walls by means of an inflatable form.
  • the present invention aims to provide apparatus for the refurbishment of pipelines and sewer pipes through the application of a layer of thermosetting resin - impregnated reinforcement material to their inner walls by means of an inflatable form which may be readily and reliably stripped from a refurbished section and which embodies a coaxial duct capable of sustaining a flow of liquid through the form whilst it is in use.
  • apparatus for applying in situ a repair material to a repair zone of an inner wall of a conduit
  • said apparatus for applying in situ a repair material to a repair zone of an inner wall of a conduit
  • said apparatus comprising a radially expandable device in use to extend over a predetermined axial length of the conduit to be repaired and over at least a part of the inner circumference of said conduit, said radially expandable device having an outer surface means forming an outer wall of an expandable cavity, means for supplying a pressure medium to said expandable cavity or withdraw said pressure medium from said expandable cavity to either move said outer surface means radially outwardly or to move said outer surface means radially inwardly, and a flexible sheath member separate from said radially expandable device and arranged so as to be capable of forming an outer layer extending along and at least partially circumferentially around said radially expandable device, in use, between said repair material and said outer surface means, and withdrawal means connected to said sheath member adjacent
  • the radially expandable device may include a core member which can include a through flow passage.
  • the core member and said withdrawal means for removal of said flexible sheath member together with said flexible sheath member are by means of the present invention thus adapted for independent withdrawal from said conduit by virtue of the fact that the flexible sheath member is independent of said core member.
  • the means for removal of said flexible sheath member may be adapted so as to withdraw or be withdrawn by the radially expandable device.
  • the arrangement of the flexible sheath member enables it to be peeled away from the repair material by at least partial eversion when the radially expandable device and/or the flexible sheath member is withdrawn along the pipeline without affecting the bond between the repair material and the pipeline wall.
  • the flexible sheath member comprises inner and outer layers, the inner layer being connected to the means for removal of the flexible sheath member and to the outer layer at ends of the inner layer which are axially remote from each other.
  • the means for removal of the flexible sheath member and the core member of the apparatus are coaxial and define an axially extending passage so as to permit flow through the conduit whilst the apparatus is in use.
  • the means for removal of the flexible sheath member defines an anakius.
  • the radially expandable device may comprise an inflatable element defining an annular or part annular enclosed space extending axially along the core member.
  • Inflating medium inlet/outlet means may be provided internally of said core member so as to enable inflation and deflation of the inflatable element.
  • a method of applying a repair material in situ to a repair zone of an inner wall of a conduit to be repaired comprising: providing a radially expandable device adapted in use to extend over a predetermined axial length of the conduit to be repaired and over at least part of the inner circumference of said conduit, said radially expandable device having an outer surface means forming an outer wall of an expandable cavity, means for supplying a pressure medium to said expandable cavity or withdrawn said pressure medium from said expandable cavity; providing a flexible sheath member, separate from said radially expandable device, over said outer surface means with withdrawal means enabling withdrawal of said sheath member from the conduit means; providing a structural repair material outwardly of said sheath member; moving said radially expandable device with said sheath member and repair material into said conduits to be repaired and thereby positioning said repair material adjacent the repair zone; introducing a pressure medium to said expandable cavity to move said outer surface means radially outwardly to press said repair material
  • the radially expandable device and said flexible sheath member together with said means for removal of said flexible sheath member are withdrawn simultaneously or sequentially from said conduit by moving the radially expandable device and the means for removal of the flexible sheath member simultaneously or sequentially along the conduit in a direction towards an axial end of said flexible sheath member opposite to an end connected to said withdrawal means for removal of said flexible sheath member.
  • said flexible sheath member comprises an inner and outer layer, said inner layer being connected to said means for removal of said flexible sheath member and to said outer layer at ends of said inner layer axially remote from each other, said radially expandable device and said flexible sheath member together with said means for removal of said flexible sheath member being withdrawn from said conduit in a manner such as to allow the flexible sheath member to be peeled away from said repair material by at least partial eversion.
  • the radially expandable device comprises an inflatable element defining an annular or part annular enclosed space forming said expandable cavity, extending axially along said core member.
  • fluid is directed into said inflatable element so as to radially expand it.
  • the fluid is heated and the repair material includes a thermosetting material or substance.
  • Figure 1 is a longitudinal cross-sectional view of an inflatable form according to the invention in situ in a pipeline to be repaired.
  • Figure 2 is a longitudinal cross-sectional view of an inflatable form according to a second embodiment of the invention in situ in a pipeline to be repaired.
  • Figure 3 is a longitudinal cross-sectional view of the inflatable form of Figure 1 in an inflated condition in situ in a pipeline being repaired.
  • FIG 4 is a longitudinal cross-sectional view of a repaired pipeline from which a flexible sheath member is to be removed by eversion.
  • an inflatable form (1) is made by forming an inflatable element (2) axially along and circumferentially around a core member
  • the inflatable element is fixed at its ends (2a and 2b) to the core member
  • Inlet/outlet duct (4) is provided through said core member (3) and into said inflatable element (2) to enable an inflating medium to be delivered to and withdrawn from the inflatable element (2).
  • the inflatable form (1) is also provided with a separate flexible sheath (5) which is connected to means for its removal (6) in the form of an annuius at one axial end of the core member (3).
  • the separate flexible sheath (5) is located axially along and circumferentially around the inflatable element (2) located externally of the core member (3).
  • the fact that the flexible sheath (5) is separated from the core member (3) and inflatable element (2) enables it to be withdrawn from the pipeline independently of the core member (3) and inflatable element (2) if so desired.
  • the means for removal of the flexible sheath is of substantial enough form, that the two parts could be removed simultaneously.
  • the flexible sheath (5) comprises an inner layer (5a) and an outer layer (5b).
  • the inner layer (5a) is connected to the means for removal of the flexible sheath (6) and to the outer layer (5b) at ends of the inner layer (5a) axially remote from each other.
  • This embodiment merely enables an alternate orientation of the inflatable form which may be more convenient than the embodiment of Figure 1, depending on the orientation of the pipeline to be repaired.
  • repair material in the form of a sheet or tube of reinforcement material (7) impregnated with thermosetting resin is placed over the inflatable form (1).
  • the whole assembly including the core member (3) with attached inflatable element (2) and the separate flexible sheath (5) together with the means for removal of the flexible sheath (6) is then simultaneously introduced into the section of a pipeline or sewer pipe required to be refurbished.
  • the apparatus may be oriented according to either Figures 1 or 2. Correct positioning may be verified through the use of closed circuit television.
  • an inflation medium at a suitable temperature and pressure is then introduced through inlet/outlet duct (4) causing the inflatable element (2) to expand and force the resin - impregnated reinforcement material into intimate contact with the inner wall surfaces of the pipeline or sewer pipe.
  • the inflating medium circulates at a suitable pressure and temperature and is preferably continued until full curing of the resin of the resin - impregnated reinforcement material is obtained.
  • the inflating medium might be water, air or some other suitable gas or fluid.
  • inflating medium circulation is stopped and the inflatable elements (2) are deflated by removal of the inflating medium from the apparatus.
  • the inflatable form (1) include the core member (3) and the inflatable element (2) is then withdrawn from the pipeline or sewer pipe section. If the core member (3) is to be withdrawn independently and before the flexible sheath (5) and the means for removal of the flexible sheath (6) withdrawal should occur in an axial direction away from the means for removal of the flexible sheath (6).
  • the flexible sheath (5) means for removal of the flexible sheath (6) and the inflatable form (1) comprising core member (3) and inflatable element (2)
  • the means for removal of the flexible sheath be of sufficient size to bear the force required to withdraw the core member (3) and inflatable element (2).
  • simultaneous withdrawal of the core member (3), inflatable element (2), flexible sheath (5) and means for removal of the flexible sheath (6) must be in a direction such that the flexible sheath (5) is caused to evert thus peeling away from the resin impregnated reinforcement material as previously described.
  • the flexible sheath (5) and means for removal of the same (6) may be carefully withdrawn prior to withdrawal of the core member (3) and the inflatable element (2). Care must be taken to ensure that eversion of the flexible sheath (5) occurs such that it is peeled away from the resin impregnated reinforcement material.

Abstract

L'invention concerne un appareil permettant d'appliquer in situ un matériau de réparation dans la zone endommagée de la paroi intérieure d'une conduite. L'appareil comprend un dispositif pouvant se déployer dans le sens radial et s'étendre sur une longueur axiale prédéterminée de la conduite à réparer et sur au moins une partie de sa circonférence intérieure. Ce dispositif à expansion radiale comporte une surface externe formant la paroi externe d'une cavité gonflable, un système fournissant un fluide de pression à cette cavité ou l'en retirant afin de déplacer cette surface externe dans le sens radial vers l'extérieur ou l'intérieur, ainsi qu'une membrane souple, distincte du dispositif se déployant dans le sens radial, et pouvant former une couche externe placée le long dudit dispositif et sur au moins une partie de sa circonférence pendant l'utilisation, entre le matériau de réparation et la surface externe. Ce dispositif comporte aussi un système de retrait adjacent à une extrémité de la membrane et permettant de retirer cette dernière de la conduite. Une partie de cette membrane placée au contact du matériau de réparation se retrousse lorsqu'on déplace la membrane dans l'axe de la conduite. L'invention concerne aussi un procédé permettant d'appliquer un matériau de réparation in situ sur une zone endommagée de la paroi interne d'une conduite à réparer.
PCT/AU1993/000114 1992-03-20 1993-03-19 Appareil permettant la reparation d'oleoducs et procede de reparation y afferent WO1993019321A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP93906381A EP0635112A4 (fr) 1992-03-20 1993-03-19 Appareil permettant la reparation d'oleoducs et procede de reparation y afferent.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPL1466 1992-03-20
AUPL146692 1992-03-20

Publications (1)

Publication Number Publication Date
WO1993019321A1 true WO1993019321A1 (fr) 1993-09-30

Family

ID=3776046

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1993/000114 WO1993019321A1 (fr) 1992-03-20 1993-03-19 Appareil permettant la reparation d'oleoducs et procede de reparation y afferent

Country Status (3)

Country Link
EP (1) EP0635112A4 (fr)
CA (1) CA2132526A1 (fr)
WO (1) WO1993019321A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019098A1 (fr) * 1996-10-25 1998-05-07 Est Einlauf-Sanierungstechnik Gmbh Appareil de renovation de canalisations
WO1998054509A1 (fr) * 1997-05-26 1998-12-03 Barry Kevin Francis Patrick Jr Procede de rehabilitation d'une canalisation existante
DE19824773A1 (de) * 1998-06-03 1999-12-09 Darius Peter Gatys Vorrichtung und Verfahren zur Reparatur von Rohren
EP1069368A1 (fr) * 1999-07-16 2001-01-17 DaimlerChrysler AG Dispositif d'étanchéité et procédé pour l'étanchéité de tuyaux
EP1626220A1 (fr) * 2004-08-11 2006-02-15 David Campbell Mitchell Methode et dispositif de réparation de l'étanchéité d'une canalisation
EP2840291A1 (fr) * 2010-07-30 2015-02-25 Perma-Liner Industries, LLC Dispositif pour réparer des canalisations
US9841135B2 (en) 2013-05-29 2017-12-12 Nal Products Aps Heatable packer
GB2590694A (en) * 2019-12-24 2021-07-07 Steve Vick International Ltd Methods and equipment for pipe insertion

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5447190A (en) * 1989-04-07 1990-11-05 Barry Bros. Specialised Services Pty Ltd Method of repairing a pipeline and apparatus for use in such a method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5447190A (en) * 1989-04-07 1990-11-05 Barry Bros. Specialised Services Pty Ltd Method of repairing a pipeline and apparatus for use in such a method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0635112A4 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019098A1 (fr) * 1996-10-25 1998-05-07 Est Einlauf-Sanierungstechnik Gmbh Appareil de renovation de canalisations
WO1998054509A1 (fr) * 1997-05-26 1998-12-03 Barry Kevin Francis Patrick Jr Procede de rehabilitation d'une canalisation existante
DE19824773A1 (de) * 1998-06-03 1999-12-09 Darius Peter Gatys Vorrichtung und Verfahren zur Reparatur von Rohren
DE19824773C2 (de) * 1998-06-03 2001-02-08 Darius Peter Gatys Vorrichtung und Verfahren zur Reparatur von Rohren
EP1069368A1 (fr) * 1999-07-16 2001-01-17 DaimlerChrysler AG Dispositif d'étanchéité et procédé pour l'étanchéité de tuyaux
EP1626220A1 (fr) * 2004-08-11 2006-02-15 David Campbell Mitchell Methode et dispositif de réparation de l'étanchéité d'une canalisation
EP2840291A1 (fr) * 2010-07-30 2015-02-25 Perma-Liner Industries, LLC Dispositif pour réparer des canalisations
US9841135B2 (en) 2013-05-29 2017-12-12 Nal Products Aps Heatable packer
GB2590694A (en) * 2019-12-24 2021-07-07 Steve Vick International Ltd Methods and equipment for pipe insertion
GB2590694B (en) * 2019-12-24 2024-05-08 Steve Vick International Ltd Methods and equipment for pipe insertion

Also Published As

Publication number Publication date
CA2132526A1 (fr) 1993-09-30
EP0635112A1 (fr) 1995-01-25
EP0635112A4 (fr) 1995-04-12

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