HIGH-PRESSURE COMPOSITE VESSEL AND METHOD OF MANUFACTURING HIGH-PRESSURE COMPOSITE VESSEL Russian patent published in 2019 - IPC F17C1/16 F17C1/06 

FIELD: storage or distribution of gases or liquids.

SUBSTANCE: high-pressure vessel comprises casing (1) integrated with preform ring (11a), connecting fitting (3) with retaining ring (7), annular seal (9a) installed in sealing groove (9) of fitting (3), and Seeger retaining ring (10a) installed in locking groove (10) of fitting (3). On the outer side of preform ring (11a), annular groove (11b) is formed, which faces locking groove (10). Sealing groove (9) faces the inner cylindrical side of preform ring (11a). Preform (11) is first subjected to a process of controlled crystallisation and then annular groove (11b) is formed in preform ring (11a). Further, preform (11) is blow moulded to the required dimensions and assembled together with fitting (3). Fitting (3) is then installed and clamped on preform ring (11a) casing (1). Vessel is then filled with gas until pressure inside the vessel becomes constant. Layer (2) of composite material is made by winding bundles of reinforcing elementary fibres, after which reinforcement layer (2) is cured by a thermal method.

EFFECT: technical result is an increase in strength and corrosion resistance.

15 cl, 10 dwg