Improvements relating to hose

Details Improvements relating to hose Improvements relating to hose

F - Mech Eng,Light,Heat,Weapons

16

L

F16L 11/15 (2006.01) B29D 23/18 (2006.01) F16L 11/20 (2006.01)

Patent

CA 2651581

A bellows hose (210) comprises an inner tubular bellows (212) and an outer tubular bellows (214). An insulation layer (216) is provided between the bellows (212 and 214). An armoured layer (218) is provided around the outer bellows (214), to improve the insulation further. The hose can have length above 30m and a diameter above 400mm. A method of, and apparatus' for, making the hose are also described, which involves the use of a non-metallic mandrel.

L'invention concerne un tuyau à soufflet, que l'on peut utiliser sans fuite, et qui présente une longueur et/ou un diamètre plus importants que ne le permettait l'art antérieur. Un tuyau à soufflet (210) comprend un soufflet tubulaire interne (212) et un soufflet tubulaire externe (214). Une couche isolante (216) est disposée entre les soufflets (212 et 214). Une couche de blindage (218) est aménagée autour du soufflet externe (214), pour améliorer encore l'isolation. Le tuyau peut avoir une longueur supérieure à 30m et un diamètre supérieur à 400mm. L'invention concerne également un procédé et un appareil de fabrication du tuyau, impliquant l'utilisation d'un mandrin non métallique.

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