Lining of pipes with flaring of liner ends

A lined pipe is produced by insertion of a liner followed by automatic and simultaneous flaring of both ends of the liner. A heated die presses the liner at each end to an intermediate stage. A final flaring die 85 completes the flare. This die remains in position and has a conduit 87 for injection...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MICHAEL O'CONNELL, JAMES SHEERAN
Format:	Patent
Sprache:	eng
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 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 lined pipe is produced by insertion of a liner followed by automatic and simultaneous flaring of both ends of the liner. A heated die presses the liner at each end to an intermediate stage. A final flaring die 85 completes the flare. This die remains in position and has a conduit 87 for injection of fluid under pressure into the liner at one end and control of pressure at the other end so that a pressure test is performed. There is an excellent seal with the inner surface of the liner to perform the pressure test because the dies are used in-situ. Production efficiency is improved because both ends are formed simultaneously and the pressure test is performed without the need to either move the pipe assembly to a different workstation or even to move a head within an existing workstation.