METAL BELLOWS TUBE, METHOD OF PRODUCING THE SAME, AND FLEXIBLE TUBE FOR HIGH-PRESSURE FLUID

The sectional shapes of a ridge 2 and a valley 3 in a bellows-shaped tube wall 1 of a metal bellows tube are made to be V-shaped. As a result, a metal bellows tube with significantly improved bending fatigue resistance compared to conventional ones can be provided. In addition, by this metal bellows...

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Bibliographische Detailangaben
1. Verfasser:	KOIZUMI, KAZUO
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	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 MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PIPES PUNCHING METAL SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	The sectional shapes of a ridge 2 and a valley 3 in a bellows-shaped tube wall 1 of a metal bellows tube are made to be V-shaped. As a result, a metal bellows tube with significantly improved bending fatigue resistance compared to conventional ones can be provided. In addition, by this metal bellows tube and a tubular metal braid covering the outside of the tube, a flexible tube for a high-pressure fluid of the present invention can be constituted. Consequently, a high--pressure fluid exceeding 20 MPa, particularly even a superhigh-pressure fluid of 70 MPa, can be transferred safely without transmitting the molecules of the fluid. L'invention concerne des sections transversales de coude (2) et de creux (3) de paroi de tube du type soufflet (1), de tube pour soufflet en métal, en forme de V. Il s'agit de tube pour soufflet en métal ayant une résistance améliorée à la fatigue de courbure, par rapport aux produits classiques. On décrit un tube flexible pour fluide haute pression structuré à partir du tube pour soufflet en métal et un corps métallique maillé de type tubulaire recouvrant l'extérieur du tube pour soufflet. Le produit considéré permet d'acheminer en sécurité un fluide haute pression, à une pression dépassant 20 Mpa, et en particulier un fluide à très haute pression, à une pression de 70 Mpa, sans perméation de molécules de fluide dans le tube.