EP0558531A1 - Ameliorations relatives au revetement interne de pipelines ou de tunnels - Google Patents

Ameliorations relatives au revetement interne de pipelines ou de tunnels

Info

Publication number
EP0558531A1
EP0558531A1 EP91919705A EP91919705A EP0558531A1 EP 0558531 A1 EP0558531 A1 EP 0558531A1 EP 91919705 A EP91919705 A EP 91919705A EP 91919705 A EP91919705 A EP 91919705A EP 0558531 A1 EP0558531 A1 EP 0558531A1
Authority
EP
European Patent Office
Prior art keywords
pipeline
passageway
extruded
pipe
lining pipe
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Withdrawn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
EP91919705A
Other languages
German (de)
English (en)
Inventor
Eric Wood
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.)
Insituform Group Ltd
Original Assignee
Insituform Group Ltd
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 Insituform Group Ltd filed Critical Insituform Group Ltd
Publication of EP0558531A1 publication Critical patent/EP0558531A1/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Withdrawn legal-status Critical Current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
    • F16L55/1651—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 everted

Definitions

  • This invention relates to the lining of pipelines and passageways, and in particular concerns the lining of such pipelines or passageways, with a tube or lining of thermo ⁇ plastic material which is of a nature such that it is folded longitudinally . in order to reduce its overall dimensions, to enable the lining tube to be inserted into the pipeline or passageway, and subsequently can be re- expanded up to the pipeline or passageway size so as to line the surface thereof, which constitutes its final form.
  • thermo-plastic lining pipes There are already a number of methods for lining pipelines or passageways using thermo-plastic lining pipes, and one such method comprises extruding the plastic lining pipe followed by the immediate folding of same, followed by cooling and coiling onto a storage drum.
  • the storage drum is taken to the site where the pipeline or passageway, which usually will be underground, has to be lined, where at the folded and coiled lining pipe is unwound, and is heated to soften same, and it is fed into the pipeline or passageway down a man-hole and then along the pipeline or passageway to be lined.
  • the hot folded lining tube When the hot folded lining tube is in position, its interior is pressurised to expand same onto the pipeline or passageway surface, followed by cooling of the lining pipe so that it will solidify in place and remain in place when the inflating pressure is removed.
  • Other systems are known but generally speaking they follow the lines of the method described above.
  • the present invention is also concerned with the insertion of a thermo-plastic pipe into a pipeline or passageway and, with the expansion of the thermo-plastic pipe, when hot, onto the pipeline or passageway surface but the present invention provides that the method can be used for the lining of extremely long lengths of pipeline or passageway, the known methods being limited to the length of coiled p pe which can be taken to site.
  • thermo-plastic lining pipe is extruded on site in a substantially vertical downwards direction into a man-hole and the extruded pipe is guided down the man-hole and into the pipeline or passageway to be lined, whilst the exterior of the extruded lining pipe is kept warm and the pipe therefore soft by virtue of heating fluid surrounding the extruded lining pipe, and the lining pipe either being extruded in a folded form so that it is of reduced overall dimension enabling it to be passed into the pipeline or passageway, or being folded or formed after extrusion into such reduced size, and the soft, hot and folded extruded lining pipe being expanded when in the pipeline or passageway onto the pipeline or passageway surface and 'eventually being cooled so as to remain in position on such surface.
  • the extruded lining pipe may be applied to the pipeline or passageway surface by being everted onto such surface, the pipe expanding as it everts, or alternatively it may be pulled into position, until it extends for the full length of the * pipeline or passageway to be lined. When it reaches such position it may be expanded by introducing fluid under pressure into the interior of the lining pipe either directly or by everting an expansion tube into the lining pipe. It is preferred that the exterior of . the extruded lining pipe in addition to being kept warm by means of heated fluid, will also be kept under pressure by said fluid in order for example to keep the lining pipe in the said folded condition.
  • a pull-rope may be fed through the extruder so as to emerge in the centre of the extrudate which, after folding, engages the central rope, and is held suitably thereto by virtue of the friction which arises as a result of pressuring the exterior of the lining pipe by the said heated fluid.
  • thermo-plastic may be used for the lining pipe, such material to include p.v.c. or any of the polyolefins.
  • This fabric layer may form a useful anchoring means if the extruded pipe is to be anchored to the pipeline or passageway suface, for example using a curable synthetic resin as adhesive or bonding medium.
  • an underground passage (10) to be lined in accordance with this embodiment of the invention extends between a pair of man-holes (12) and (14) extending from the passage (10) to ground level (16).
  • a winch At ground level adjacent the man-hole is a winch (18), the purpose of which is to winch a pull-rope cable or the like (20) to assist the lining operation as will be described.
  • a generator and boiler unit (22) for electricity supply and supply of hot water which is in fact ejected through an outlet water pipe (24) to a head (26) whose function will be described hereinafter.
  • an operational vehicle (28) housing an extruder (30) which supplies plastic material to a cross-head extruder (32) as shown to exude an extrudate (34) in a vertically downwards manner.
  • the extrudate is in the form of a circular pipe which is formed into folded configuration by folding rollers (36), so that the extrudate is for example formed into the star configuration shown at (38).
  • the thus formed extrudate is folded around a central rope (20) which extends entirely through the man- hole and the passageway (10) to be lined and onto the winch (18).
  • the rope (20) is fed from a .supply (40) carried by the vehicle and passes through the centre of the extruder cross-head (32).
  • An orifice valve arrangement (42) enables the downstream chamber (44) which is defined by a pipe (46), and the end of the extradate (48) which has been inverted and attached to the pipe (46) by a clamp (50), to be pressurised with water supplied from the head (26).
  • Head (26) is of a type which will be self propelled in that the hot water issues from the rear of the head, and therefore the head is forced forwards as far as possible so that as shown on the drawing as the extrudate everts in the region of the everting face (52), so the head (26) remains close to such face and supplies hot water to assist in the eversion, and also to keep the inwardly travelling portion (54) of the extrudate in a soft condition so that it will expand freely at the everting face (52) as that face travels along the passageway (10) .
  • the valve (42 ) serves to maintain the pressure in the chaamber (44), but if there is any excess pressure water is in fact bled upwardly through the valve (42), and will return to the boiler via the return line (56).
  • the extruding operation will be discontinued when the everting face (52) is approximately halfway along the passageway (10), so that the trailing end of the extrudate will arrive in the region of the man-hole (12).
  • Some means may have to be provided in order to seal the trailing end of the extrudate so that the pressure can be maintained inside the extrudate and the hot water can be replaced with cold water in order to cure the extrudate material which is thermo-plastic in nature.
  • the extrudate may be of any suitable material such as p.v.c. or a polyolefin.
  • the use of the rope (20) can be employed to assist in the control of the speed of extrusion.
  • Such other members comprising for example fabric tubes which will eventually be everted with the extruded lining tube so as to lie between the tube and the passageway surface.
  • Such fabric tubes may be of assistance when for example synthetic resin is applied to the everting face or to the wall of the passageway (10) in order to anchor the resulting lining to the passageway surface.
  • the present invention has a number of advantages including there is no theoretical length limitation on pipes which can be lined using the extrusion method.

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 se rapporte à la pose d'un revêtement interne dans un pipeline ou un tunnel souterrain, qui consiste à utiliser un tuyau thermoplastique. Le tuyau est extrudé à la verticale et vers le bas dans un trou d'homme (14) et est ensuite introduit dans le pipeline ou le tunnel (10) dans lequel le revêtement doit être posé. Le tuyau extrudé (34) est pourvu de plis longitudinaux (38) de sorte que sa coupe transversale est temporairement réduite. Lorsqu'il est à l'intérieur du pipeline ou du tunnel (10), le tuyau est élargi jusqu'à atteindre sa grandeur normale afin de produire un revêtement de surface du pipeline ou du tunnel (10). Le tuyau demeure chaud et mou jusqu'à ce qu'il soit gonflé, après quoi il est refroidi de façon à retenir sa forme lorsqu'il est à sa grandeur maximale.
EP91919705A 1990-11-21 1991-11-13 Ameliorations relatives au revetement interne de pipelines ou de tunnels Withdrawn EP0558531A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909025359A GB9025359D0 (en) 1990-11-21 1990-11-21 Improvements relating to the lining of pipelines or passageways
GB9025359 1990-11-21

Publications (1)

Publication Number Publication Date
EP0558531A1 true EP0558531A1 (fr) 1993-09-08

Family

ID=10685771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91919705A Withdrawn EP0558531A1 (fr) 1990-11-21 1991-11-13 Ameliorations relatives au revetement interne de pipelines ou de tunnels

Country Status (7)

Country Link
EP (1) EP0558531A1 (fr)
AU (1) AU8874991A (fr)
CA (1) CA2096745A1 (fr)
GB (1) GB9025359D0 (fr)
IE (1) IE914031A1 (fr)
WO (1) WO1992009843A1 (fr)
ZA (1) ZA919142B (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9908602D0 (en) * 1999-04-15 1999-06-09 Northumbria Lyonnaise Technolo Rehabilitation of water supply pipes
DE19958833C2 (de) * 1999-11-29 2002-03-14 Siegfried Schwert Verfahren und Vorrichtung zum Auskleiden einer Rohrleitung oder eines Kanals
DE10064444A1 (de) * 2000-12-22 2002-07-04 Jt Elektronik Gmbh Verfahren und Vorrichtung zum Einharzen und anschließendem Einbringen eines Schlauches in eine Rohrleitung
DE102004043383B4 (de) * 2004-09-08 2006-05-18 Bernd-Jan Krasowski Inversionsschleuse mit einer Schleusenkammer
CN113404973A (zh) * 2021-07-28 2021-09-17 上海誉帆环境科技股份有限公司 一种多转弯倒虹管非开挖修复装置及修复方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4640313A (en) * 1983-12-19 1987-02-03 Stanley Robert K Interlining of pipelines for transporting sewage, water, slurries, liquid and gaseous hydrocarbons, and the like
FR2571823B1 (fr) * 1984-10-17 1989-07-13 Trest Juzhvodoprovod Dispositif de protection de la surface interieure d'une conduite contre la corrosion
GB2171484B (en) * 1985-02-21 1989-11-29 Ashimori Ind Co Ltd A tubular lining material
EP0519917A1 (fr) * 1989-04-06 1992-12-30 INA Acquisition Corporation Ameliorations apportees au tubage des conduits ou passages

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9209843A1 *

Also Published As

Publication number Publication date
WO1992009843A1 (fr) 1992-06-11
IE914031A1 (en) 1992-06-03
CA2096745A1 (fr) 1992-05-22
AU8874991A (en) 1992-06-25
GB9025359D0 (en) 1991-01-02
ZA919142B (en) 1992-08-26

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