摘要:
To produce composite parts (1) having an inner molded part (2) with openings (3) that are accessible from the outside, the molded part is introduced into a molding tool, to the mold wall of which a shell layer (11) has been applied. The cavity between the molded part (2) and shell layer (11) is filled with a thermally insulating plastics foam (12) which foams in the molding tool and connects the molded part and shell layer. After demolding, a composite part is provided which has a good-quality surface formed by the shell layer. A composite part of said type is preferably used for the connection of thermally insulated pipelines.
摘要:
In order to connect a connection piece (10), which is, for example, a pipe coupling or a mounting or a fitting, to a thermally insulated conduit pipe (1), a clamping sleeve (9) with an internal thread (8) is screwed in between the internal pipe (2) of the conduit pipe and the insulation layer (3) of said conduit pipe. A connection body (11) with a plug sleeve (13) is arranged in the internal pipe beforehand. The clamping sleeve (9) acts indirectly on the connection piece (10) by means of a retaining ring (14) in order to press said connection piece against the end face (5) of the internal pipe (2). In this way, the distance between the insulation layer (3) and the casing (4) of the conduit pipe is dispensed with and inaccuracies when cutting the conduit pipe to length can be compensated.
摘要:
For connecting a connecting piece (10), for example a tube coupling or an armature or a fitting, to a heat insulated conduit pipe (1), a calibration ring (9) of the connecting piece is driven between the inner pipe (2) of the conduit pipe and the insulating layer (3) thereof. Subsequently, a shell (11) is fastened in the inner pipe, for example by pressing the shell into the inner pipe. Thus, the removal of the insulating layer (3) and the shell (4) of the conduit pipe is not necessary.
摘要:
A thermally insulated conduit pipe (22) is produced in that an inner pipe (2), onto which an outer pipe (13) has been extruded and which is enclosed by foam, is worked downstream of the extruder (12) with forming tools (16-21) in order to achieve deep undulation. This results in a conduit pipe having a small bending radius.
摘要:
Ein wärmeisoliertes Leitungsrohr (22) wird hergestellt, indem ein umschäumtes Innenrohr (2), auf welches ein Aussenrohr (13) aufextrudiert worden ist, nach dem Extruder (12) mit Formwerkzeugen (16-21) bearbeitet wird, um eine tief reichende Wellung zu erzielen. Damit ergibt sich ein Leitungsrohr mit geringem Biegeradius.
摘要:
Es wird eine Verbindung zwischen dem Ende eines gewellten Metallrohres (1) und einem Anschlußstück (4) beschrieben, bei dem in oder auf dem Ende des gewellten Rohres (1) ein Stützring (2) und/oder ein Druckring (3) vorgesehen ist und in einer durch den Stützring (2) oder den Druckring (3) und das gewellte Rohr (1) gebildeten Kammer (5) ein verformbarer Dichtring (6) angeordnet ist, der sich bei einer längsaxialen Verschiebung des Stützrings (2) und/oder des Druckringes (3) oder des Anschlußstücks (4) in radialer Richtung verformt, wobei der Dichtring (6) an seiner dem Wellrohr (1) zugekehrten Oberfläche eine der Kontur des Wellrohres (1) angepaßte Kontur (6a) aufweist.