METHOD AND APPARATUS FOR LINING AN OUTER PIPE WITH AN INNER PIPE

A method of lining an outer pipe (12) with an inner flexibly resilient pipe (14) includes the steps of introducing fluid into a pressure chamber (60) to reduce the diameter of the inner pipe (14) as the inner pipe is pulled into the outer pipe (12); increasing the length of the pressure chamber (60)...

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Bibliographische Detailangaben
1. Verfasser:	BACON, STUART, MICHAEL
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PIPES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method of lining an outer pipe (12) with an inner flexibly resilient pipe (14) includes the steps of introducing fluid into a pressure chamber (60) to reduce the diameter of the inner pipe (14) as the inner pipe is pulled into the outer pipe (12); increasing the length of the pressure chamber (60) as the inner pipe (14) is pulled into the outer pipe (12) to maintain the diameter of the inner pipe (14) pulled into the outer pipe (12) in its reduced form; and reducing the pressure of the fluid in the pressure chamber (60) once the inner pipe (14) has been pulled into the outer pipe (12) to discharge the fluid from the pressure chamber (60) as the inner pipe (14) expands within the outer pipe (12) to line the outer pipe (12). L'invention concerne un procédé et appareil pour former le revêtement d'un tuyau externe avec un tuyau interne souple et flexible; le procédé consiste à injecter un fluide dans une chambre à pression pour réduire le diamètre du tuyau interne à mesure que le tuyau interne est tiré vers l'intérieur du tuyau externe; augmenter la longueur de la chambre de pression à mesure que le tuyau interne est tiré vers l'intérieur du tuyau externe pour maintenir le diamètre du tuyau interne tiré vers l'intérieur du tuyau externe afin de distribuer du fluide depuis la chambre de pression à mesure que le tuyau interne se dilate vers l'intérieur du tuyau externe pour former un revêtement dans le tuyau externe.