EP0850381A1 - Renovation de conduites - Google Patents

Renovation de conduites

Info

Publication number
EP0850381A1
EP0850381A1 EP96927455A EP96927455A EP0850381A1 EP 0850381 A1 EP0850381 A1 EP 0850381A1 EP 96927455 A EP96927455 A EP 96927455A EP 96927455 A EP96927455 A EP 96927455A EP 0850381 A1 EP0850381 A1 EP 0850381A1
Authority
EP
European Patent Office
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.)
Withdrawn
Application number
EP96927455A
Other languages
German (de)
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
Publication of EP0850381A1 publication Critical patent/EP0850381A1/fr
Withdrawn legal-status Critical Current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).
EP96927455A 1995-08-29 1996-08-28 Renovation de conduites Withdrawn EP0850381A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPN5110/95 1995-08-29
AUPN5110A AUPN511095A0 (en) 1995-08-29 1995-08-29 Pipe rehabilitation
PCT/AU1996/000538 WO1997008487A1 (fr) 1995-08-29 1996-08-28 Renovation de conduites

Publications (1)

Publication Number Publication Date
EP0850381A1 true EP0850381A1 (fr) 1998-07-01

Family

ID=3789438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96927455A Withdrawn EP0850381A1 (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)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9711294D0 (en) * 1997-06-03 1997-07-30 Autotte Jean Bernard Apparatus and method for lining of passageways
FI982416A (fi) * 1998-11-06 2000-05-07 Suomen Putkisaneeraus Virtauskanavien korjausmateriaali
US6868870B2 (en) 2002-10-30 2005-03-22 Daniel Warren Method of lining a pipeline using a calibration hose
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
FR2911078B1 (fr) * 2007-01-05 2010-12-24 Inst Francais Du Petrole Baudruche extensible de restructuration de revetement interne.
US8591695B2 (en) 2008-03-14 2013-11-26 Danny Warren Method and composition for lining a pipe
AU2013255028B2 (en) * 2012-05-02 2017-05-25 Nu Flow Technologies 2000 Inc. Liner assembly for pipeline repair or reinforcement and method of installing same
WO2015161212A1 (fr) 2014-04-17 2015-10-22 Daniel Warren Installation de revêtement de pipeline de grand diamètre et réparation
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

Family Cites Families (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
DE3906057A1 (de) * 1988-07-21 1990-01-25 Hans Mueller Verfahren zum auskleiden eines im erdreich verlegten leitungsrohres
GB9203005D0 (en) * 1992-02-13 1992-03-25 Insituform Group Ltd Improvements relating to the lining of pipelines or passageways
AU694172B2 (en) * 1994-04-11 1998-07-16 Cant, Richard Samuel Lining material

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9708487A1 *

Also Published As

Publication number Publication date
NZ315541A (en) 1999-08-30
AUPN511095A0 (en) 1995-09-21
WO1997008487A1 (fr) 1997-03-06
CA2230538A1 (fr) 1997-03-06

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Legal Events

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