EP0430936A1 - Procede et appareil de garnissage interne d'une conduite - Google Patents

Procede et appareil de garnissage interne d'une conduite

Info

Publication number
EP0430936A1
EP0430936A1 EP19870905905 EP87905905A EP0430936A1 EP 0430936 A1 EP0430936 A1 EP 0430936A1 EP 19870905905 EP19870905905 EP 19870905905 EP 87905905 A EP87905905 A EP 87905905A EP 0430936 A1 EP0430936 A1 EP 0430936A1
Authority
EP
European Patent Office
Prior art keywords
duct
inner conduit
liner
press
press bladder
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Withdrawn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
EP19870905905
Other languages
German (de)
English (en)
Inventor
Bengt Melin
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.)
NCC BYGG AB
Original Assignee
NCC BYGG AB
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 NCC BYGG AB filed Critical NCC BYGG AB
Publication of EP0430936A1 publication Critical patent/EP0430936A1/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Withdrawn legal-status Critical Current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
    • F16L55/18—Appliances for use in repairing pipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0065—Heat treatment
    • B29C63/0069—Heat treatment of tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • B29C63/28—Lining or sheathing of internal surfaces applied by "rubber" bag or diaphragm
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer 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
    • F16L55/165—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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes
    • E03F2003/065—Refurbishing of sewer pipes, e.g. by coating, lining

Definitions

  • This invention relates to a method and apparatus for internally lining a duct, particularly an underground water supply conduit or isewer line. More particularly, the invention relates to a method and apparatus of the kind defined in the preambles of the independent claims.
  • duct is to be construed broadly and thus is intended to encompass any duct in the shape of a pipe, conduit, tunnel or shaft.
  • the invention is concerned with the technique for internally lining ducts which comprises introducing into the duct a tubular liner made of glass fibre cloth, for example, which is impregnated or coated with a curable plastics material and then pressing the liner against the internal wall of the duct by means of a pressurized bladder until the plastics material has cured.
  • an electrical heater is introduced into the duct together with the l:.ner and the press bladder con ⁇ tained in the liner. After the press bladder has been pressurized and thus expanded, the heater is slowly moved from one end of the duct to the other.
  • the invention aims at providing an improved method and improved apparatus for applying heat to the liner and the curable material.
  • a method characterised by applying the heat for accelerating the curing from an inner conduit located in and extending along the press bladder from one end thereof to the other, the diameter of which conduit is substantially smaller than that of the duct, hot water being conveyed through the inner conduit.
  • the inner conduit serves as a heater extending throughout the length of the duct or the duct section being lined.
  • heat is supplied to the liner and the plastics material from the flowinej hot water.
  • the inner conduit advantageously is arranged such that it rests, throughout its length, on the inside of the lowermost portion of the press bladder, that is, as close as possible to the lowermost portion of the liner and the duct. Heat will then be transferred particularly efficiently to the lowermost portion of the liner and the plastics material so that first and foremost this portion of the liner is caused to set.
  • the danger of the liner becoming inadver ⁇ tently indented by water finding its way from the sur ⁇ rounding ground between the liner and the inside of the duct is greatest at the lowermost portion, and for that reason it is particularly important for the plastics material to become properly cured there.
  • the water temperature need not be particularly high in order that sufficient supply of heat may be achieved with an inner conduit diameter within the above-indicated range; in practice a water temperature of 45-60° C (as measured at the upstream end) has been found to be sufficient with a water flow rate of 15 1/minute, an internal diameter of the press bladder of 300-375 mm and an external diameter of the inner conduit of 50-75 mm.
  • the just-mentioned figures which are naturally only given by way of example, relate to an underground water supply pipe line. In certain circumstances, particularly if the water heating capacity is low, it is advantageous to cause the hot water to circulate in a closed path comprising the inner conduit and a water heater disposed outside the duct.
  • the inner conduit is introduced into the duct simultaneously with the tubular liner impregnated or coated with the plastics material and the press bladder disposed within the liner.
  • a pull cable is connected to the band-like, flexible assembly made up by the tubular liner, which may be a "sleeve" of glass fibre fabric, and the press bladder, which advantageously may be a thin-walled hose or other thin, air-tight layer of a material having some resiliency, and the inner conduit disposed within the press bladder, whereupon the assembly is pulled into the duct from one end thereof by means of the pull cable.
  • the introduction thus is carried out basically in the way the liner and the press bladder are introduced according to the technique used previously; the only difference is that the press bladder also contains the inner conduit.
  • the device according to the invention is characterised in that the heater comprises an inner conduit extending along the press bladder from one end thereof to the other and serving to convey hot water, the diameter of the inner conduit being substantially smaller than the diameter the press bladder has when it is expanded into engagement with the wall of the duct.
  • Shown in the drawing is a section of a duct in the form of an underground pipe line L which extends between two manholes B and is to be lined internally.
  • the length of the pipe line section to be lined may be 30-100 m, for example.
  • the liner 11 is pressed against the pipe line by a press bladder in the form of a thin-walled PVC hose 12 which is kept in an expanded state by pressurized air supplied from a compressor 13; in most cases an air pressure of 4-6 m water column is sufficient.
  • the press hose 12 is maintained in pressurized and expanded state until the plastics material has set or cured sufficiently, whereupon the pressure is relieved and the press hose is pulled out of the lined pipe line.
  • an inner conduit 14 Disposed within the press hose 12, and extending throughout the length thereof, is an inner conduit 14 in the form of a thin-walled pliable PVC hose of the type which collapses to form a band when it is not filled with water or pressurized air, i.e., relieved of internal pressure.
  • the inner conduit 14 is connected to respectively an inlet conduit 15 and an outlet conduit 16 serving to convey hot water to and from the inner conduit.
  • the hot water is supplied by a pump 17 from a supply tank 18 in which the water is kept at a suitable tempera ⁇ ture by a heater 19 and to which the water is returned from the inner conduit 14.
  • the temperature and the rate of circulation are chosen according to the requirements of each particular case and the desired curing time, but generally a temperature within the range 40-70° C (as measured at the unstream manhole B or at the tank 18) is suitable.
  • the water pressure within the inner conduit 14 has to be sufficient to prevent the conduit from collapsing under the influence of the air pressure within the press hose 12.
  • the ends of the press hose 12 are connected in sub ⁇ stantially air-tight manner to the inlet and outlet conduits 15 and 16, and at the end where the inlet conduit 15 is connected to the imer conduit 14, a hose 20 coming from the compressor 13 opens into the press hose.
  • the water flow through the inner conduit 14 and the pressurization of the press hose 12 are maintained until the plastics material has cured throughout the length of the liner 11. Because the temperature of the flowing water is slightly lower at the downstream end of the inner conduit 14 the progress of the curing should preferably be checked at the downstream end of the liner.
  • the inner conduit 14 is a single hose, but in certain cases it may be suitable to form the inner conduit of several parallel hoses, e.g. if it is desired to increase the heat dissipating surface area of the inner conduit without using a large diameter hose.
  • the inner conduit preferably should be thin-walled so that there is no substantial temperature difference between the external surface of the inner conduit and the water flowing through it.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

On effectue le garnissage interne d'une conduite souterraine en introduisant dans ladite conduite (L) une garniture tubulaire (11) imprégnée ou revêtue d'un matériau plastique non vulcanisé mais vulcanisable et renfermant un tuyau souple presseur gonflable (12). On soumet ensuite ledit tuyau (12) à une pressurisation afin de contraindre la garniture (11) à se plaquer contre l'intérieur de la conduite. On accélère la vulcanisation du matériau plastique en appliquant de la chaleur sur la garniture (11) et sur le matériau plastique à partir d'un conduit interne (14) disposé dans le tuyau souple presseur (12), de l'eau chaude étant véhiculée le long dudit conduit interne.
EP19870905905 1986-09-03 1987-08-26 Procede et appareil de garnissage interne d'une conduite Withdrawn EP0430936A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8603706A SE454097B (sv) 1986-09-03 1986-09-03 Sett och anordning for invendig fodring av en passage
SE8603706 1986-09-03

Publications (1)

Publication Number Publication Date
EP0430936A1 true EP0430936A1 (fr) 1991-06-12

Family

ID=20365483

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870905905 Withdrawn EP0430936A1 (fr) 1986-09-03 1987-08-26 Procede et appareil de garnissage interne d'une conduite

Country Status (4)

Country Link
EP (1) EP0430936A1 (fr)
DK (1) DK202188A (fr)
SE (1) SE454097B (fr)
WO (1) WO1988001707A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5034180A (en) * 1988-04-13 1991-07-23 Nupipe, Inc. Method for installing a substantially rigid thermoplastic pipe in an existing pipeline
CH672536A5 (fr) * 1987-04-28 1989-11-30 Ametex Ag
GB2244537B (en) * 1987-12-28 1992-05-06 Osaki Bousui Construction Co L Method of lining branch pipe portion of underground main pipe with rigid plastics tube
GB2213230B (en) * 1987-12-28 1992-05-06 Osaka Bosui Kensetsusha Kk Method of lining branch pipe portion of underground main pipe with rigid plastics tube
IT1232705B (it) * 1989-05-05 1992-03-04 Marini Ermenegildo Marini Robe Procedimento e dispositivo per il rinnovamento di tubazioni e condutture
JPH0717012B2 (ja) * 1989-09-05 1995-03-01 東京瓦斯株式会社 導管の非掘削チューブ反転ライニング工法
CH679881A5 (fr) * 1989-11-27 1992-04-30 Ersag Eternit Rohrnetzsanierun
NL9001540A (nl) * 1990-07-05 1992-02-03 Wavin Bv Werkwijze en inrichting voor het aanbrengen van een binnenbuis in een bestaande buisleiding, alsmede buisleiding met hierin aangebrachte binnenbuis uit verstrekte thermoplastische kunststof.
DE4023549A1 (de) * 1990-07-25 1992-03-05 Manfred Schmidt Verfahren zur innenauskleidung von rohrleitungen
NL9201620A (nl) * 1992-09-18 1994-04-18 Wavin Bv Werkwijze en inrichting voor het aanbrengen van een binnenbuis in een bestaande buisleiding onder doorlopende toevoer van warmte, alsmede een aldus verkregen buisleiding.
WO1995008075A1 (fr) * 1993-09-14 1995-03-23 Ina Acquisition Corp. Ameliorations concernant le garnissage de conduites ou passages
JP2927407B2 (ja) * 1996-06-06 1999-07-28 株式会社湘南合成樹脂製作所 管ライニング工法
GB9711294D0 (en) * 1997-06-03 1997-07-30 Autotte Jean Bernard Apparatus and method for lining of passageways
ATE257232T1 (de) 1999-06-18 2004-01-15 Tunetanken As Verfahren zur in situ renovierung von schächten, insbesondere abwasserschächten, und vorgefertigte auskleidung dafür
US6540439B2 (en) 2000-06-27 2003-04-01 Terre Hill Silo Company Junction seal between a liner of an underground structure and a penetrating pipe
AU2014203356B2 (en) * 2013-06-14 2017-04-13 Sideliner Enterprises Pty Ltd Pipe and Conduit Rehabilitation System
DE102017100917A1 (de) * 2017-01-18 2018-07-19 Antje Krausser Vorrichtung und Verfahren zum Sanieren von Rohren
NL2018980B1 (en) * 2017-05-26 2018-12-07 Wn Smitgroep Method for renovating an underground hollow structure and material sheet for use in the method

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1340068A (en) * 1970-09-22 1973-12-05 Insituform Pipes & Structures Lining of surfaces defining passageways
JPS54127030A (en) * 1978-03-25 1979-10-02 Yasushi Nakashin Method of repairing leakage on pipe laid underground
AU4541179A (en) * 1978-04-05 1979-10-18 Daniel Cahuzac Sheath for forming and internal lining for a conduit
SE435866B (sv) * 1983-04-06 1984-10-22 Vj System Ab Forfarande och anordning for infodring av rorledningar, med en flexibel, herdbar plast innehallande slang

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8801707A1 *

Also Published As

Publication number Publication date
WO1988001707A1 (fr) 1988-03-10
DK202188A (da) 1988-04-27
SE8603706D0 (sv) 1986-09-03
SE454097B (sv) 1988-03-28
DK202188D0 (da) 1988-04-13

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