WO1988001707A1 - Method and apparatus for internally lining a duct - Google Patents

Method and apparatus for internally lining a duct Download PDF

Info

Publication number
WO1988001707A1
WO1988001707A1 PCT/SE1987/000375 SE8700375W WO8801707A1 WO 1988001707 A1 WO1988001707 A1 WO 1988001707A1 SE 8700375 W SE8700375 W SE 8700375W WO 8801707 A1 WO8801707 A1 WO 8801707A1
Authority
WO
WIPO (PCT)
Prior art keywords
duct
inner conduit
liner
press
press bladder
Prior art date
Application number
PCT/SE1987/000375
Other languages
French (fr)
Inventor
Bengt Melin
Original Assignee
Byggnads- & Industriservice Ab Binab
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 Byggnads- & Industriservice Ab Binab filed Critical Byggnads- & Industriservice Ab Binab
Publication of WO1988001707A1 publication Critical patent/WO1988001707A1/en
Priority to DK202188A priority Critical patent/DK202188A/en
Priority to NO881803A priority patent/NO881803L/en

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.

Abstract

Internal lining of an underground pipe line is carried out by introducing into the pipe line (L) a tubular liner (11) impregnated or coated with an uncured but curable plastics material and enclosing an inflatable press hose (12), whereupon the press hose (12) is pressurized to press the liner (11) into engagement with the inside of the pipe line. The curing of the plastics material is accelerated by applying heat to the liner (11) and the plastics material from an inner conduit (14) disposed in the press hose (12), through which inner conduit hot water is conveyed.

Description

Method and apparatus for internally lining a duct
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. In this context, the term "duct" is to be construed broadly and thus is intended to encompass any duct in the shape of a pipe, conduit, tunnel or shaft. Accordingly, 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.
It is known in connection with such lining technique to apply heat to the liner and to the plastics material in order to accelerate the curing. A short curing time - in actual practice meaning some ten hours or shorter - is desired, i.a. for the reason that it makes it possible during one and the same working day to commence and complete the lining of a duct or a section of a duct.
In accordance with a known method of applying heat to the liner and the plastics material (see, for example,
SE-B-435 866) , 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.
It is also known to apply the heat by causing hot air or hot water to flow through the pressurized press bladder.
However, the known techniques and apparatus for applying heat to the liner and the plastics material are unsatisfactory in various respects, e.g. because they require complex and expensive equipment and/or consume much energy. The invention aims at providing an improved method and improved apparatus for applying heat to the liner and the curable material.
According to the invention there is provided 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, the diameter of which advanta¬ geously is 0.1-0.25 times the diameter of the duct, thus serves as a heater extending throughout the length of the duct or the duct section being lined. By way of the inner conduit heat is supplied to the liner and the plastics material from the flowinej hot water.
If the duct is substantially horizontal, particularly if it is an underground pipe line, 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 heat transfer to the other portions of the liner and the plastics material takes place by way of the air filling the space between the press bladder and the inner conduit. This heat transfer probably is promoted by some movement of the air. Such movement takes place more or less by itself, if not for other reasons because in actual practice a certain amount of air inevitably bleeds from the press bladder and has to be replaced by new air. It is within the scope of the invention, however, to take steps to ensure circulation of air within the press bladder using means suited to the purpose.
Surprisingly, 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. Suitably, 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. In practising the method in such case, 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.
The invention is elucidated further hereinafter with reference to the accompanying drawing, the only figure of which shows a longitudinal sectional view of a section of a pipe line being lined in accordance with the invention.
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.
A tubular liner ("sleeve") 11 of glass fibre cloth and impregnated or coated with a curable plastics material (epoxy resin) engages the inside of the pipe line . 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. 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. At the ends of the press hose 12, that is, at the manholes B, 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 (flow rate) 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. Naturally, 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.
In the illustrated example 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. As a general proposition it may be said that 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.

Claims

Claims
1. Method for internally lining a duct, particularly an underground water supply conduit or sewer line, com¬ prising pressing a tubular liner introduced into the duct, which liner is impregnated or coated with an uncured but curable plastics material and encloses an expandable press bladder extending along the liner, against the wall of the duct under the influence of air pressure in the press bladder until the plastics material has cured, and further comprising applying heat to the liner and the plastics material from a heater disposed within the press bladder in order to accelerate the curing of the plastics material, characterised in that the heat is applied from an inner conduit (14) disposed within and extending along the press bladder (12) from one end thereof to the other, the diameter of which conduit is substantially smaller than the internal diameter of the duct (L) , hot water being conveyed through the inner conduit.
2. Method according to claim 1, in which the duct is substantially horizontal, characterised in that the inner conduit (14) is arranged so that it rests freely against, and in direct engagement with, the inside of the lowermost portion of the press bladder throughout the length of the press bladder.
3. Method according to claim 1 or 2, characterised in that the hot water is circulated in a closed path compris¬ ing in addition to the inner conduit (14) a heater (18) and a circulation pump (17) which are disposed outside the duct.
4. Method according to any one of claims 1-3, character ised in that the inner conduit (14) is introduced into the duct (L) simultaneously with the liner (11) and the press bladder (12) with the inner conduit being disposed in the press bladder,
5. Apparatus for internally lining a duct, particu¬ larly an underground water supply conduit or sewer pipe line, in accordance with the method according to any one of claims 1-4, comprising a liner which is adapted to be introduced into the duct and to be coated or impregnated with curable plastics material, an expandable press bladder disposed within and extending along the liner and having means for introducing pressurized air into it, and a heater disposed within the press bladder, characterised in that the heater comprises an inner conduit (14) extend¬ ing along .the press bladder (12) 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 (12) has when it is expanded into engagement with the wall of the duct.
6. Apparatus according to claim 5, characterised in that the ends of the press bladder (12) are connected in substantially air-tight fashion with the inner conduit (14) and in that a fitting (20) for introducing pressur- ized air into the press bladder (12) is provided at one end of the press bladder.
7. Apparatus according to claim 5 or 6, characterised in that the inner conduit (14) is in the form of a hose which is collapsible to form a band.
8. Apparatus according to any one of claims 5-7, characterised in that the inner conduit forms part of a circulating system comprising a water heater (18) and a circulating pump (19) .
PCT/SE1987/000375 1986-09-03 1987-08-26 Method and apparatus for internally lining a duct WO1988001707A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DK202188A DK202188A (en) 1986-09-03 1988-04-13 METHOD AND DEVICE FOR INTERIOR LINING OF A PASSAGE
NO881803A NO881803L (en) 1986-09-03 1988-04-25 PROCEDURE AND DEVICE FOR INTERIOR LINING OF A LOOP.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8603706-6 1986-09-03
SE8603706A SE454097B (en) 1986-09-03 1986-09-03 SET AND DEVICE FOR INTERNAL LINING OF A PASSAGE

Publications (1)

Publication Number Publication Date
WO1988001707A1 true WO1988001707A1 (en) 1988-03-10

Family

ID=20365483

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1987/000375 WO1988001707A1 (en) 1986-09-03 1987-08-26 Method and apparatus for internally lining a duct

Country Status (4)

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

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0292703A2 (en) * 1987-04-28 1988-11-30 Ametex Ag Process and device for laying plastic pipes
FR2625290A1 (en) * 1987-12-28 1989-06-30 Osaka Bosui Kensetsusha Kk METHOD OF LINING A SECTION OF A BRANCHING PIPE OF A SUBTERRANEAN MAIN PIPE USING A RIGID OR SEMI-RIGID PLASTIC TUBE
FR2637042A1 (en) * 1988-09-26 1990-03-30 Nu Pipe Inc METHODS AND APPARATUSES FOR INSTALLING NEW PIPING IN A CONDUIT FOR REPAIRING THE SAME
EP0395934A1 (en) * 1989-05-05 1990-11-07 Ermenegildo Marini Method and device for the construction and/or the reconditioning of pipelines and conduits
EP0441982A1 (en) * 1989-09-05 1991-08-21 Tokyo Gas Co., Ltd. Construction method of reversal tube lining on conduit without excavation
GB2244537A (en) * 1987-12-28 1991-12-04 Osaki Bousui Construction Co L Lining underground branch pipe with rigid plastics tube
WO1992001189A1 (en) * 1990-07-05 1992-01-23 Wavin B.V. Method and installation for fitting an inner tube in an existing pipeline
WO1992001552A1 (en) * 1990-07-25 1992-02-06 Manfred Schmidt Process for lining pipe lines
WO1994007079A1 (en) * 1992-09-18 1994-03-31 Wavin B.V. Method and apparatus for fitting an inner tube in an existing pipeline while continuously supplying heat, and a pipeline obtained in this way
EP0430117B1 (en) * 1989-11-27 1994-06-22 ERSAG Systeme AG Apparatus and method for laying and positioning a pipe in an existing conduit
WO1995008075A1 (en) * 1993-09-14 1995-03-23 Ina Acquisition Corp. Improvements relating to the lining of pipelines or passageways
WO1998055796A1 (en) * 1997-06-03 1998-12-10 Autotte Jean Bernard Apparatus and method for lining of passageways
US6024910A (en) * 1996-06-06 2000-02-15 Shonan Gosei-Jushi Seisakusho K.K. Method for lining a tubular conduit
US6634828B1 (en) 1999-06-18 2003-10-21 Tunetanken A/S Method for in situ renovation of a manhole, particularly a sewer manhole, and prefabricated liner therefore
US7121766B2 (en) 2000-06-27 2006-10-17 Terre Hill Silo Company Inflatable underground structure liner
AU2014203356B2 (en) * 2013-06-14 2017-04-13 Sideliner Enterprises Pty Ltd Pipe and Conduit Rehabilitation System
EP3351843A1 (en) * 2017-01-18 2018-07-25 Antje Krausser Method and device for renovating pipes
NL2019872B1 (en) * 2017-05-26 2018-12-07 Wn Smitgroep Method for renovating the interior of a hollow structure and preform for use in the method

Citations (4)

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Publication number Priority date Publication date Assignee Title
GB1357355A (en) * 1970-09-22 1974-06-19 Insituform Pipes & Structures Pipe lining
DE2912840A1 (en) * 1978-04-05 1979-10-11 Giuseppe Muscianese COVER FOR THE INTERNAL JOINT
US4244895A (en) * 1978-03-25 1981-01-13 Yasushi Nakashin Leak repairing process for underground pipe
SE435866B (en) * 1983-04-06 1984-10-22 Vj System Ab PROCEDURE AND DEVICE FOR LINING OF PIPES, WITH A FLEXIBLE, HARDENABLE PLASTIC CONTAINING HOSE

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1357355A (en) * 1970-09-22 1974-06-19 Insituform Pipes & Structures Pipe lining
US4244895A (en) * 1978-03-25 1981-01-13 Yasushi Nakashin Leak repairing process for underground pipe
DE2912840A1 (en) * 1978-04-05 1979-10-11 Giuseppe Muscianese COVER FOR THE INTERNAL JOINT
SE435866B (en) * 1983-04-06 1984-10-22 Vj System Ab PROCEDURE AND DEVICE FOR LINING OF PIPES, WITH A FLEXIBLE, HARDENABLE PLASTIC CONTAINING HOSE

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0292703A3 (en) * 1987-04-28 1991-01-02 Ametex Ag Process and device for laying plastic pipes
EP0292703A2 (en) * 1987-04-28 1988-11-30 Ametex Ag Process and device for laying plastic pipes
GB2244537A (en) * 1987-12-28 1991-12-04 Osaki Bousui Construction Co L Lining underground branch pipe with rigid plastics tube
FR2625290A1 (en) * 1987-12-28 1989-06-30 Osaka Bosui Kensetsusha Kk METHOD OF LINING A SECTION OF A BRANCHING PIPE OF A SUBTERRANEAN MAIN PIPE USING A RIGID OR SEMI-RIGID PLASTIC TUBE
GB2213230A (en) * 1987-12-28 1989-08-09 Osaka Bosui Kensetsusha Kk Lining branch pipes
FR2637042A1 (en) * 1988-09-26 1990-03-30 Nu Pipe Inc METHODS AND APPARATUSES FOR INSTALLING NEW PIPING IN A CONDUIT FOR REPAIRING THE SAME
GB2223559A (en) * 1988-09-26 1990-04-11 Nu Pipe Inc Lining pipes
GR890100612A (en) * 1988-09-26 1990-10-31 Nu Pipe Improvements relating to methods and device for the installation of a new pipe in a basement
GB2223559B (en) * 1988-09-26 1993-06-16 Nu Pipe Inc Improvements in methods for installing a substantially rigid thermoplastic pipein an existing conduit
BE1002870A5 (en) * 1988-09-26 1991-07-09 Nu Pipe Inc METHODS AND APPARATUSES FOR INSTALLING A NEW PIPELINE IN AN EXISTING UNDERGROUND CONDUIT.
EP0395934A1 (en) * 1989-05-05 1990-11-07 Ermenegildo Marini Method and device for the construction and/or the reconditioning of pipelines and conduits
EP0441982A4 (en) * 1989-09-05 1991-08-28 Tokyo Gas Co., Ltd. Construction method of reversal tube lining on conduit without excavation
EP0441982A1 (en) * 1989-09-05 1991-08-21 Tokyo Gas Co., Ltd. Construction method of reversal tube lining on conduit without excavation
EP0430117B1 (en) * 1989-11-27 1994-06-22 ERSAG Systeme AG Apparatus and method for laying and positioning a pipe in an existing conduit
WO1992001189A1 (en) * 1990-07-05 1992-01-23 Wavin B.V. Method and installation for fitting an inner tube in an existing pipeline
WO1992001552A1 (en) * 1990-07-25 1992-02-06 Manfred Schmidt Process for lining pipe lines
WO1994007079A1 (en) * 1992-09-18 1994-03-31 Wavin B.V. Method and apparatus for fitting an inner tube in an existing pipeline while continuously supplying heat, and a pipeline obtained in this way
WO1995008075A1 (en) * 1993-09-14 1995-03-23 Ina Acquisition Corp. Improvements relating to the lining of pipelines or passageways
US6024910A (en) * 1996-06-06 2000-02-15 Shonan Gosei-Jushi Seisakusho K.K. Method for lining a tubular conduit
WO1998055796A1 (en) * 1997-06-03 1998-12-10 Autotte Jean Bernard Apparatus and method for lining of passageways
US6634828B1 (en) 1999-06-18 2003-10-21 Tunetanken A/S Method for in situ renovation of a manhole, particularly a sewer manhole, and prefabricated liner therefore
US7121766B2 (en) 2000-06-27 2006-10-17 Terre Hill Silo Company Inflatable underground structure liner
AU2014203356B2 (en) * 2013-06-14 2017-04-13 Sideliner Enterprises Pty Ltd Pipe and Conduit Rehabilitation System
EP3351843A1 (en) * 2017-01-18 2018-07-25 Antje Krausser Method and device for renovating pipes
NL2019872B1 (en) * 2017-05-26 2018-12-07 Wn Smitgroep Method for renovating the interior of a hollow structure and preform for use in the method

Also Published As

Publication number Publication date
DK202188D0 (en) 1988-04-13
DK202188A (en) 1988-04-27
SE8603706D0 (en) 1986-09-03
EP0430936A1 (en) 1991-06-12
SE454097B (en) 1988-03-28

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