WO1995029361A1 - Procede et dispositif de renovation ou de remise en etat de canalisations - Google Patents

Procede et dispositif de renovation ou de remise en etat de canalisations Download PDF

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Publication number
WO1995029361A1
WO1995029361A1 PCT/CH1995/000092 CH9500092W WO9529361A1 WO 1995029361 A1 WO1995029361 A1 WO 1995029361A1 CH 9500092 W CH9500092 W CH 9500092W WO 9529361 A1 WO9529361 A1 WO 9529361A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
radiation source
head
pack
transport
Prior art date
Application number
PCT/CH1995/000092
Other languages
German (de)
English (en)
Inventor
Hans Peter Von Burg
Rudolf Nuescheler
Eric M. Wille
Original Assignee
Inc Bauchemie Ag
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 Inc Bauchemie Ag filed Critical Inc Bauchemie Ag
Priority to AU22124/95A priority Critical patent/AU2212495A/en
Priority to EP95915110A priority patent/EP0757771A1/fr
Publication of WO1995029361A1 publication Critical patent/WO1995029361A1/fr

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
    • F16L55/163—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a ring, a band or a sleeve being pressed against the inner surface of the pipe

Definitions

  • the present invention relates to a method and a device for the renovation and renewal of non-accessible pipelines.
  • Escaping gases and liquids from old or damaged pipelines can cause ecological and economic damage. Renewal work by digging out the old pipelines and replacing them with new ones is often very difficult or even impossible, especially in the case of built-up land and the resulting damage and disabilities to the structures.
  • the method according to the invention has the advantage that both short (for example 20 cm for sleeves) and long pipe sections of up to more than 100 m in length can be achieved quickly and inexpensively with a single simple method can be repaired without significantly reducing the tube cross-section.
  • the process is also suitable for lining pipelines with small cross sections of 10-30 cm, with pipe sections from about 20 cm to about 10, preferably up to 6 m, can be lined in one piece.
  • pipe sections from about 20 cm to about 10, preferably up to 6 m
  • individual film sections can be strung together in an overlapping manner.
  • 1 to 4 different sizes of train, transport and inlet heads are required.
  • the method can be used both for straight and curved pipelines, in practice bends remaining easily processable up to approximately 45 °.
  • Laminates As a film for lining the pipelines, there are those which are waterproof and curable by UV light.
  • a glass fiber fabric is preferably used as the carrier material and a polyester resin which contains a UV catalyst is used as the curable resin.
  • Isophthalic acid ester resin is particularly suitable as the resin and benzoylbutyl ether as the UV catalyst.
  • the quantity ratio of fiberglass resp. Glass fiber fabric to polyester resin ranges from 4: 1 to 1: 4.
  • the outside of the laminate is preferably protected and supported by 2 thin protective foils, preferably made of PVC, nylon or polyester.
  • the laminate structure of the film has the reinforcing properties of fiberglass and, at the same time, the impermeability of impregnated glass fiber fabric.
  • an adhesive primer can be applied to the protective film on the pipe wall side.
  • orthophthalic esters esterified with ethyl glycol, propyl glycol, butyl glycol or glycerol have proven suitable.
  • Unsaturated isophthalic acid esters esterified with ethanol or propylene glycol can be used as a top coating.
  • the film is rolled up into rolls of any size and covered with an opaque protective cover.
  • an opaque protective cover In this way, the film in the form of a roll can be transported, stored and used on site by removing the opaque protective cover, cutting the film to the desired size and rewinding the remaining film roll with the protective cover.
  • the film cut to the desired size is then wound onto the suitable pack, consisting of a pulling head, inlet head and hose with a UV lamp movably mounted therein.
  • a transport head with an attached, reusable, opaque transport film made of e.g. PVC, PE or PP is put over the pack to protect the film while it is being pulled into the pipeline and the pack together with the transport head and Transport foil pulled into the pipeline by means of pull cables attached to the heads and positioned over the damaged area. It is important to ensure that the transport head or. Traction head and inlet head about 2-8 cm smaller cross sections than the pipes.
  • An inflatable, highly elastic, high-tensile and transparent material is suitable as the hose.
  • Soft UV-resistant silicone, PA, PVA, PU, PE or PVC hoses with rubber-like elasticity and extreme expansion options have proven particularly suitable and very high strength values in tear and abrasion resistance, as they are offered on the market.
  • the hose material can be cut to lengths from approx. 20 cm to 20 m and more and attached airtight at one end to the pulling head and the inlet head.
  • UV radiation sources arranged one behind the other and connected to one another by flexible joints can be used, preferably in the form of a rod, in the same pack.
  • UV radiation sources available on the market are preferably used in the high-power range with optimum radiation yield in the UVA wavelength range, which are particularly suitable for curing polyester resins and yet have only a low level of heat radiation. This gives curing times of the polyester resin of less than 1 minute, preferably less than 30 seconds, in the region of the UV lamps.
  • the transport head and the transport film which may be present, are removed from the pack with the aid of the traction ropes attached to the traction head and inlet head with a further traction rope fastened to the transport head and an overpressure of 0.5-1.5 bar by means of a compressor generated in the hose.
  • the film is pressed against the inner wall of the pipeline.
  • the curing process of the polyester resin can now be started by the UV radiation source.
  • the next pack can be prepared when processing longer pipe sections and, if necessary, wrapped with the previously removed transport head and the transport film. If the tube is considerably longer than that used in UV radiation source, the entire length of the film in, a few minutes can be cured by continuous or discontinuous displacement of the UV radiation source within the tube. Due to the short curing time and the materials used, no special cooling unit is required inside the hose despite the high output of the UV lamp.
  • the excess pressure is released from the tube and the tube is preferably evacuated, whereupon it detaches from the film. So that the hose can be detached from the film better, a wax-containing release agent can be added to the inside if necessary.
  • the pack can now be removed from the pipeline using the pulling rope on the inlet or pulling head, for practical reasons the pack is preferably pulled out on the inlet head because of the cable required for the UV lamp.
  • a video camera can be installed. This eliminates the need for a measurement to position the film and the user can follow the entire curing process on the monitor.
  • non-accessible pipelines with a cross section of preferably 10-30 cm through a thin layer of 1-4 mm, preferably less than 2 mm, of a film according to the invention can be rehabilitated or. be repaired.
  • Another advantage of the invention is that the device and the method are equally suitable for the repair and refurbishment of short and longer pipe sections, because the distance between the traction head and the inlet head is variable. This allows the length select the curable film as required.
  • several polyester film sections can be arranged one behind the other.
  • the film is cured at low temperatures of approximately 40 ° -50 ° C. and high contact pressures, a firm bond is created between the inside of the pipeline and the film. Since the film does not shrink during the slight subsequent cooling, the bond remains, so that the film does not fall behind. In other words, the inflow of water between the film and the inside of the pipeline is prevented.
  • the strong bond also allows the hardened film to be used for pipe connections or inlets e.g. is cut to the desired length with a cutter, without the end of the film with the tube being additionally covered with a cover ring, band or sleeve, etc. connected and sealed.
  • FIG. 1 shows a partial cross section through an embodiment of a device according to the invention while it is being drawn into a pipeline.
  • FIG. 2 shows a further cross section through a device according to the invention during the curing process.
  • FIG 3 shows a cross section of a further embodiment of the invention before the start of curing.
  • FIG. 4 shows a cross section of a further embodiment of the invention during the curing.
  • 5 shows a cross section of an arcuate embodiment of the invention during curing.
  • FIG. 6 shows a cross section of an arcuate embodiment of the invention during curing.
  • FIG. 1 shows a device according to the invention, which has a transport head (1) with a pull bracket (2), to which a pull line can be attached, and with a transport head opening (25) through which the pull line of the pull head (5) is guided , and with a transport film (8) slipped over the pack, which, for example is fixed to the transport head (1) by means of a clamping ring (4).
  • the transport head (1) which is not rigidly connected to the traction head (5) can be removed from the pack on the traction line attached to the transport head as soon as it is positioned at the damaged point.
  • the pack itself consists of a pulling head (5) with an eyelet (3), on which a not shown e.g. segmented towing line is attached.
  • the towing line can be segmented so that the transport head (1), through the opening (25) of which the towing line is guided, can be easily disguised from the towing line at the interface of any segment.
  • the traction head (5) has an eyelet (3) to which the traction line of the traction head (5) is attached.
  • Slide rollers (6) make it easier to pull in the pack if no transport head (1) and no transport film (8) are used.
  • the inlet head (10) At the other end of the pack is the inlet head (10), which has an inlet or.
  • a UV radiation source (18) with a starter (15) arranged between 2 acrylic glass rings (22) and a protective tube (21) made of quartz glass is loose with the inlet head (10) Train and power cables (12) connected.
  • the acrylic glass rings (22) each have at least two resilient spacers consisting of a tension spring (17) and bolts (16) with rollers (26) so that the UV radiation source (18) is at a uniform distance from the polyester film ( 19) can be moved in the air hose (9).
  • rods or wires (23) fixed between screw head (5) and inlet head (10) by screw pins (27, Fig. 2), which prevent the longitudinal expansion of the pack when pressure in the air hose (9) increases.
  • the air hose (9) is connected to the traction head (5) and the inlet head (10) in an airtight manner with the aid of clamping rings (7, 11) and the polyester film (19) is wound overlapping around the air hose (9), the length of the fo lie (19) must be a few centimeters shorter than the distance between the two facing ends of the traction head (5) and the inlet head (10) in order to ensure that it bears perfectly against the inner wall of the pipeline (24) .
  • FIG. 2 shows an embodiment according to the invention during the curing phase.
  • the air hose (9) which is fixed to the traction head (5) and inlet head (10) by means of clamping rings (28), presses the polyester film (19) against the inner wall of the pipeline (24) by means of excess pressure.
  • the UV radiation source (18) is then pulled continuously or discontinuously from the pulling head (5) by means of the pulling and power cable (12) against the inlet head (10), the spacers consisting of tension springs (17) and bolts being folded out on the tube cross section (16) and rollers (26) which keep the UV radiation source (18) at a uniform distance from the polyester film (19).
  • the polyester film (19) wound on the outer wall of the air hose (9) is so long against the Inner wall of the pipeline (24) is pressed until it has hardened due to the UV radiation source (18). This process takes a few seconds to a maximum of 2 minutes in the direct vicinity of the UV radiation source (18).
  • the period of time within which the polyester film (19) can be cured in a tube section depends on the length of the radiation source for a given power of the UV radiation source (18). So you can at a radiation source length of 10 cm about 10-30 cm film length per minute, preferably about 20 cm per minute, respectively. if the radiation source length doubles, harden the film length 20-60 cm per minute, preferably 40 cm per minute.
  • FIG. 3 A further embodiment according to the invention is shown in FIG. 3 during positioning in a pipeline (24).
  • the pull cables (32), (51) and (40) serve this purpose.
  • a traction cable (32) is fixed to the traction head (5) by means of a traction ring (33).
  • the inlet head has a pull rope (40).
  • the lamp unit (31) is fixed to the feed head (5) by means of the bolt (35) and the spacers (37) rest on the lamp unit (31) in order to facilitate positioning of the device in the pipeline (24).
  • the transport film (8) drawn only on one side serves the same purpose.
  • the traction head (5) also contains an exhaust air valve (34) which is combined with a bolt (35) for fixing the lamp unit (31) in a pipeline (24) during the drawing in and positioning of the device according to the invention.
  • 4 shows the embodiment according to the invention from FIG. 3 during the curing phase.
  • a release agent (36) is located between the tube (24) and the outside of the film (19).
  • the lamp unit (31) contains a pneumatic cylinder (41) and pneumatically controlled spacers (37) which hold the UV lamp (18) on all sides at approximately the same distance from the curable film (19). Furthermore, the lamp unit (31) contains the ignitor. the starter (15) for the UV lamp (18) and a casing (38) for the ignition device (15).
  • An air hose (39) is used to control the pneumatics for the spacers (37).
  • the lamp unit (31) is pulled through the air hose (9) in the direction of the arrow at a predetermined speed by means of the power pull cable (12) in order to harden the film (19).
  • the lamp unit (68) has a pull cable (61) fixed to a pull ring (62) on the rounded lamp head at the front (63), spacer rings (64) e.g. made of Teflon to keep the lamp unit (68) at a distance from the film (19) and a rounded lamp head at the back (65).
  • the igniter with casing housing (67) is movably connected to the lamp head at the rear (65) by means of a universal joint (66) in order to be able to better circle around pipes (24).
  • FIG. 6 shows the embodiment of FIG. 5 during the curing phase in a pipe bend. Due to the rounded lamp heads (63, 65) and the separate igniter with shuttering housing (67) flexibly connected to it by means of a universal joint (66), renovation or Repair work in pipe bends with angles up to 45 ° and more can be carried out easily with this type of construction. If several damaged areas located some distance from one another need to be repaired, this can be done by applying a plurality of packs each positioned at the corresponding damaged area. This is particularly the case when renovating pipe sockets. In the case of damage points located close to each other or when longer pipe sections need to be renovated, a longer pack of several meters in length or even several longer packs just overlapping one another in the edge area can be applied. The maximum possible length of a pack depends on the cross section of the pipeline (24), the accessibility of the pipeline (24) and any changes in direction required when pulling the pack into the pipeline (24) and can be up to approximately 20 lengths or more.

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

Abstract

Afin de remettre en état ou de rénover des canalisations dans lesquelles un homme ne peut pas passer, on introduit un paquet de film, le cas échéant avec une tête de transport (1) et un film à transporter (8), dans une canalisation (24) de diamètre réduit compris entre 10 et 30 cm environ. Le film (19) durcissable par exposition à des rayonnements ultraviolets est pressé contre la paroi intérieure de la canalisation endommagée (24) par une surpression générée dans le tuyau gonflable (9), puis est durci en peu de temps par la source de rayonnements ultraviolets (18) qui peut le cas échéant se déplacer dans le paquet dans le sens longitudinal. La longueur du film dont est constitué un paquet peut varier entre 20 cm et 10 m environ, selon la longueur du tuyau gonflable utilisé (9) et du film (19) enroulé sur celui-ci. Ce procédé convient donc aussi bien pour réparer des dommages localisés que pour rénover des sections tout entières de canalisations de plus de 100 m de longueur.
PCT/CH1995/000092 1994-04-26 1995-04-26 Procede et dispositif de renovation ou de remise en etat de canalisations WO1995029361A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU22124/95A AU2212495A (en) 1994-04-26 1995-04-26 Process and device for renewing or repairing pipelines
EP95915110A EP0757771A1 (fr) 1994-04-26 1995-04-26 Procede et dispositif de renovation ou de remise en etat de canalisations

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1286/94-7 1994-04-26
CH128694 1994-04-26

Publications (1)

Publication Number Publication Date
WO1995029361A1 true WO1995029361A1 (fr) 1995-11-02

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ID=4206879

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1995/000092 WO1995029361A1 (fr) 1994-04-26 1995-04-26 Procede et dispositif de renovation ou de remise en etat de canalisations

Country Status (3)

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EP (1) EP0757771A1 (fr)
AU (1) AU2212495A (fr)
WO (1) WO1995029361A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001022432A1 (fr) * 1999-09-24 2001-03-29 Thames Water Services Limited Dispositif servant a durcir un materiau de reparation durcissant a la lumiere ultraviolette
GB2479374A (en) * 2010-04-07 2011-10-12 Volodymyr Valerievich Krasovskyy A method of lining a pipeline or passageway
WO2017060523A1 (fr) * 2015-10-08 2017-04-13 I.S.T. Innovative Sewer Technologies Gmbh Dispositif de durcissement équipé d'une lampe produisant de la lumière uv
US9657882B2 (en) 2013-03-11 2017-05-23 Buergofol GmbH Tubular film and the use thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301204A1 (fr) * 1987-07-29 1989-02-01 SOFTLINING AG Systems for Relining Garnissage pour la rénovation interne des conduites et utilisation dudit garnissage
US5042532A (en) * 1989-08-01 1991-08-27 Cues, Inc. Expandable tube apparatus for repairing pipelines
EP0499153A1 (fr) * 1991-02-12 1992-08-19 Hans Müller Procédé pour la restauration partielle d'un égout enterré
WO1992016784A1 (fr) * 1991-03-22 1992-10-01 Inpipe Sweden Ab Procede et appareil de chemisage d'un passage
EP0564741A1 (fr) * 1992-04-07 1993-10-13 Ashimori Industry Co., Ltd. Procédé et dispositif pour réparer une canalisation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0301204A1 (fr) * 1987-07-29 1989-02-01 SOFTLINING AG Systems for Relining Garnissage pour la rénovation interne des conduites et utilisation dudit garnissage
US5042532A (en) * 1989-08-01 1991-08-27 Cues, Inc. Expandable tube apparatus for repairing pipelines
EP0499153A1 (fr) * 1991-02-12 1992-08-19 Hans Müller Procédé pour la restauration partielle d'un égout enterré
WO1992016784A1 (fr) * 1991-03-22 1992-10-01 Inpipe Sweden Ab Procede et appareil de chemisage d'un passage
EP0564741A1 (fr) * 1992-04-07 1993-10-13 Ashimori Industry Co., Ltd. Procédé et dispositif pour réparer une canalisation

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001022432A1 (fr) * 1999-09-24 2001-03-29 Thames Water Services Limited Dispositif servant a durcir un materiau de reparation durcissant a la lumiere ultraviolette
GB2479374A (en) * 2010-04-07 2011-10-12 Volodymyr Valerievich Krasovskyy A method of lining a pipeline or passageway
US9657882B2 (en) 2013-03-11 2017-05-23 Buergofol GmbH Tubular film and the use thereof
WO2017060523A1 (fr) * 2015-10-08 2017-04-13 I.S.T. Innovative Sewer Technologies Gmbh Dispositif de durcissement équipé d'une lampe produisant de la lumière uv
CN108370638A (zh) * 2015-10-08 2018-08-03 I.S.T.创新下水道技术有限责任公司 具有产生紫外光的灯的固化设备
US20180281241A1 (en) * 2015-10-08 2018-10-04 I.S.T. Innovative Sewer Technologies Gmbh Curing Device Comprising a Lamp that Produces UV Light
EP3360394B1 (fr) * 2015-10-08 2024-05-01 Trelleborg Sealing Profiles Germany GmbH Dispositif pour durcissement comprenant une lampe à ultraviolets

Also Published As

Publication number Publication date
AU2212495A (en) 1995-11-16
EP0757771A1 (fr) 1997-02-12

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