METHOD FOR MANUFACTURING AND HEAT-INSULATED PIPES FOR CONVEYING HOT OR COLD FLUIDS

Method for manufacturing, and heat-insulated pipes comprising coaxial tubes sliding relative to each other with controlled friction: (a) applying a film (3) of non-adhesive and lubricating material onto the inner surface of a first outer casing tube (2) and/or onto the outer surface of a second inne...

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Bibliographische Detailangaben
Hauptverfasser:	COCOLICCHIO, ALBERTO, ZANELLATO, GIORGIO, BERTI, ENRICO, VARAGNOLO, ROBERTO, GUIDETTI, GIANPIETRO
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 JOINTS OR FITTINGS FOR PIPES LIGHTING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PIPES PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE 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:	Method for manufacturing, and heat-insulated pipes comprising coaxial tubes sliding relative to each other with controlled friction: (a) applying a film (3) of non-adhesive and lubricating material onto the inner surface of a first outer casing tube (2) and/or onto the outer surface of a second inner carrier tube (1); b) fixing a series of spacers (4) made of heat-insulating material onto the inner carrier tube (1); c) coupling and centring the outer casing tube (2) on the inner carrier tube (1); d) mounting suitable sealing flanges (6) on the ends of said tubes (1, 2) coupled together; f) supplying, via the flange or flanges (6) and by suitable means (7), liquid resin which, as a result of subsequent expansion, fills completely the cavity (5) formed between said tubes (1, 2); g) removing the flanges. L'invention concerne un procédé pour fabriquer des tuyaux calorifugés comprenant des tubes coaxiaux glissant les uns contre les autres avec un frottement contrôlé. Ce procédé consiste à: (a) appliquer un film (3) en matière non adhésive et lubrifiante sur la surface interne d'un premier tubage externe (2) et/ou sur la surface externe d'un deuxième tube support interne (1); b) fixer une série d'espaceurs (4) en matériau calorifuge sur le tube support interne (1); c) accoupler et centrer le tubage externe (2) sur le tube support interne (1); d) monter des brides d'étanchéité adaptées (6) aux extrémités des tubes (1, 2) couplés; e) chauffer dans un four les tubes (1, 2) dotés des brides (6) et couplés; f) au moyen de la ou des brides (6) et de dispositifs (7) adéquats, mettre de la résine liquide qui, suite à dilatation, emplit entièrement la cavité (5) formée entre les tubes (1, 2); g) enlever les brides.