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WO1997008487A1 - Renovation de conduites - Google Patents

Renovation de conduites Download PDF

Info

Publication number
WO1997008487A1
WO1997008487A1 PCT/AU1996/000538 AU9600538W WO9708487A1 WO 1997008487 A1 WO1997008487 A1 WO 1997008487A1 AU 9600538 W AU9600538 W AU 9600538W WO 9708487 A1 WO9708487 A1 WO 9708487A1
Authority
WO
WIPO (PCT)
Prior art keywords
liner
pipeline
bladder
ofthe
resin
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/AU1996/000538
Other languages
English (en)
Inventor
Kevin Francis Patrick Barry, Jr.
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
Priority to EP96927455A priority Critical patent/EP0850381A1/fr
Priority to NZ315541A priority patent/NZ315541A/xx
Priority to AU67275/96A priority patent/AU698461B2/en
Publication of WO1997008487A1 publication Critical patent/WO1997008487A1/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
    • F16L55/1652—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 flexible liner being pulled into the damaged section
    • F16L55/1654—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 flexible liner being pulled into the damaged section and being inflated

Definitions

  • the present invention relates to rehabilitating existing pipelines of various lengths and diameters and, in particular, to a method for performing such rehabilitation.
  • Underground pipe systems deteriorate over time as a result of degradation of materials and outside influences such as tree roots, compression from above, expansion
  • PVC polyvinylchloride
  • the liner is fed into the existing pipe in a heated and softened form and then is
  • Hot cure systems are also susceptible to shrinkage both longitudinally and
  • the liner may move further along the pipe wall resulting in infiltration through the
  • the water causes what is known as a "cold spot" in the hot cure method.
  • This cold spot can inhibit the curing process which in turn leads to a failure ofthe line.
  • liners also normally require two access points to the host pipe.
  • the liner saturated with resin.
  • the liner is turned inside out or inverted and then forced into position in the pipeline by pressurised water normally produced by a static head of water
  • polyester resin systems are preferred.
  • the present invention seeks to overcome or at least ameliorate the above problems
  • the method includes the further steps of removing the bladder from the
  • the liner is formed of a felt-like material.
  • the bladder is coated with a release agent prior to insertion into the liner tube.
  • the gaseous fluid is compressed air.
  • the resin curing time may be adjusted by adjusting the ratios of base resin and
  • the resin may be cooled below ambient temperature during the set up process.
  • Figure 1 shows a pictorial representation ofthe liner prior to insertion into the host pipe
  • Figure 2 shows a sectional representation ofthe liner and bladder prior to insertion
  • Figure 3 shows a sectional part cutaway representation ofthe liner inserted into the pipeline.
  • Figure 4 shows a pictorial representation ofthe lining method where there is only a
  • the liner 5 is typically a felt-like
  • the felt is
  • extruded tubes 7 are coated with a release agent and inserted inside the felt tube or liner 5 to form an inflatable bladder.
  • the extruded tubes 7 are typically formed
  • bladder 7 may be inserted in the liner 5 before or after the felt is stitched or vulcanised.
  • lined is surveyed to access the length of pipeline to be lined and the location of any
  • junction distances are then marked on the liner 5 and a thin
  • This additional tubing 9 is optional, but desirable, in that it prevents excess resin
  • the liner 5 is next placed in a straight line on the ground and air plugs 10, 11
  • Air is supplied to the air plugs by air line 3 and to the bladder 7 by air line 4. The end of
  • the bladder 13 is spaced from the end ofthe liner 14 to prevent the end ofthe liner being
  • the liner 5 is then inflated through one or both ofthe air plugs 10, 11.
  • liner 5 is inflated sufficiently to form the desired shape ofthe pipeline 8 to be relined.
  • liner 5 such that the resin impregnates into the liner material.
  • the liner 5 can then be
  • the bladder 7 is then inflated using compressed air. Once inflated, the bladder 7 may be
  • deflated bladders 7 may be used inside the
  • liner 5 as a form of security. Should the outer bladder fail through bursting or fails to
  • the resin is then allowed to cure for the required time. During the curing process,
  • the liner 5 is held against the inner wall 19 of the pipeline 8 by the pressurised bladder 7.
  • the liner 5 is also attached to the inner wall 19 by means ofthe water resistant adhesive
  • the bladder 7 is
  • an electric drain cleaner can be used externally to cut the junctions from
  • the liner 5 is
  • bladder 7 are sealed to prevent escape of inflation air and a flow through plug 18 is
  • method includes introducing a
  • the liner 5 in the pipeline. This is shown in Figure 4.
  • the liner 5 has one end 20 sealed.
  • This end 20 is pushed toward the boundary trap 21 using hand rods (not shown) or the
  • the liner 5 can then be inflated using the internal bladder 7 in the usual
  • the cold cure technique enables long lengths of

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

L'invention porte sur un procédé de rénovation in-situ de conduites. Un doublage tubulaire (5) d'un matériau sensiblement absorbant est formé et reçoit une vessie gonflable (7), puis le doublage (5) est imprégné d'une résine durcissant à froid, la surface extérieure du doublage et/ou la surface intérieure de la conduite ((8) à rénover sont revêtues d'un revêtement adhésif hydrofuge (16) avant introduction dans la conduite (8) avec la vessie associée (8). On gonfle alors la vessie (7) à l'aide d'un fluide gazeux de manière à plaquer le doublage (5) contre la paroi intérieure (19) de la conduite. La pression dans la vessie est maintenue jusqu'au durcissement du doublage (5) imprégné de résine. On peut alors retirer la vessie (7) du doublage durci (5).
PCT/AU1996/000538 1995-08-29 1996-08-28 Renovation de conduites Ceased WO1997008487A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP96927455A EP0850381A1 (fr) 1995-08-29 1996-08-28 Renovation de conduites
NZ315541A NZ315541A (en) 1995-08-29 1996-08-28 Pipe rehabilitation comprising forming absorbent liner with an expandable bladder, impregnating with resin and coating with water resistant coating
AU67275/96A AU698461B2 (en) 1995-08-29 1996-08-28 Pipe rehabilitation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPN5110 1995-08-29
AUPN5110A AUPN511095A0 (en) 1995-08-29 1995-08-29 Pipe rehabilitation

Publications (1)

Publication Number Publication Date
WO1997008487A1 true WO1997008487A1 (fr) 1997-03-06

Family

ID=3789438

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1996/000538 Ceased WO1997008487A1 (fr) 1995-08-29 1996-08-28 Renovation de conduites

Country Status (5)

Country Link
EP (1) EP0850381A1 (fr)
AU (1) AUPN511095A0 (fr)
CA (1) CA2230538A1 (fr)
NZ (1) NZ315541A (fr)
WO (1) WO1997008487A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998055796A1 (fr) * 1997-06-03 1998-12-10 Autotte Jean Bernard Dispositif et procede pour revetir l'interieur des canalisations
WO2000028257A1 (fr) * 1998-11-06 2000-05-18 Suomen Putkisaneeraus Oy Materiau de reparation pour conduits d'ecoulement
US6868870B2 (en) 2002-10-30 2005-03-22 Daniel Warren Method of lining a pipeline using a calibration hose
US7270150B2 (en) 2005-06-14 2007-09-18 Warren Environmental, Inc. Method of lining a pipeline
EP1942298A1 (fr) * 2007-01-05 2008-07-09 Ifp Baudruche extensible de restructuration de revêtement interne
EP1719946A3 (fr) * 2005-05-02 2009-06-24 Nu Flow Technologies 2000 Inc. Assemblage de revêtement pour réparation des conduits et procédés d'installation associés
US8591695B2 (en) 2008-03-14 2013-11-26 Danny Warren Method and composition for lining a pipe
EP2844905A4 (fr) * 2012-05-02 2015-12-23 Nu Flow Technologies 2000 Inc Ensemble revêtement pour la réparation ou le renforcement de canalisation et son procédé de montage
US10408373B2 (en) 2014-04-17 2019-09-10 Warren Environmental & Coating, Llc Large diameter pipe lining and repair
CN114458856A (zh) * 2021-12-16 2022-05-10 堡森(上海)新材料科技有限公司 一种用于在役管道带水结构修复的装置及方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2665088A (en) * 1987-12-07 1989-06-08 Neil John Stephens Improved pipe liner and method
AU3719789A (en) * 1988-07-21 1990-01-25 Kmg Kanal-Muller-Gruppe International Gmbh & Co. Kg Method for lining a pipe buried in the ground
AU3461193A (en) * 1992-02-13 1993-09-03 Insituform Licensees Bv/S.A. Improvements relating to the lining of pipelines or passageways
AU1637895A (en) * 1994-04-11 1995-10-19 Cant, Richard Samuel Lining material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2665088A (en) * 1987-12-07 1989-06-08 Neil John Stephens Improved pipe liner and method
AU3719789A (en) * 1988-07-21 1990-01-25 Kmg Kanal-Muller-Gruppe International Gmbh & Co. Kg Method for lining a pipe buried in the ground
AU3461193A (en) * 1992-02-13 1993-09-03 Insituform Licensees Bv/S.A. Improvements relating to the lining of pipelines or passageways
AU1637895A (en) * 1994-04-11 1995-10-19 Cant, Richard Samuel Lining material

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998055796A1 (fr) * 1997-06-03 1998-12-10 Autotte Jean Bernard Dispositif et procede pour revetir l'interieur des canalisations
WO2000028257A1 (fr) * 1998-11-06 2000-05-18 Suomen Putkisaneeraus Oy Materiau de reparation pour conduits d'ecoulement
US6868870B2 (en) 2002-10-30 2005-03-22 Daniel Warren Method of lining a pipeline using a calibration hose
EP1719946A3 (fr) * 2005-05-02 2009-06-24 Nu Flow Technologies 2000 Inc. Assemblage de revêtement pour réparation des conduits et procédés d'installation associés
US7849883B2 (en) 2005-05-02 2010-12-14 Nuflow Technologies 2000 Inc. Liner assembly for pipeline repair and methods of installing same
US7270150B2 (en) 2005-06-14 2007-09-18 Warren Environmental, Inc. Method of lining a pipeline
FR2911078A1 (fr) * 2007-01-05 2008-07-11 Inst Francais Du Petrole Baudruche extensible de restructuration de revetement interne.
EP1942298A1 (fr) * 2007-01-05 2008-07-09 Ifp Baudruche extensible de restructuration de revêtement interne
US8591695B2 (en) 2008-03-14 2013-11-26 Danny Warren Method and composition for lining a pipe
US9151417B2 (en) 2008-03-14 2015-10-06 Warren Environmental, Inc. Method and composition for lining a pipe
EP2844905A4 (fr) * 2012-05-02 2015-12-23 Nu Flow Technologies 2000 Inc Ensemble revêtement pour la réparation ou le renforcement de canalisation et son procédé de montage
US10408373B2 (en) 2014-04-17 2019-09-10 Warren Environmental & Coating, Llc Large diameter pipe lining and repair
CN114458856A (zh) * 2021-12-16 2022-05-10 堡森(上海)新材料科技有限公司 一种用于在役管道带水结构修复的装置及方法

Also Published As

Publication number Publication date
AUPN511095A0 (en) 1995-09-21
CA2230538A1 (fr) 1997-03-06
EP0850381A1 (fr) 1998-07-01
NZ315541A (en) 1999-08-30

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