Avtomaticheskaya Svarka (Automatic Welding), # 7, 2018, pp. 24-30
Technical parameters and features of manufacturing
high-pressure vessels for natural gas transportation
E.O. Paton Electric Welding Institute of the NAS of Ukraine. 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine.
Considered are technical capabilities of simplified manufacture of all-metal welded high-pressure vessels for transportation of natural gas by means of application of produced 351-610 mm diameter pipes from increased strength steels. Dimension-weight parameters and stresses in vessel wall depending on steel strength are determined. The structure, structure-mechanical inhomogeneity and fatigue resistance of the welded joints were examined. Elimination of rolling, welding, thermal-mechanical treatment, thermal treatment of shell from the technological process and formation of outer fiberglass casing as well as reduction of wall thickness, diameter and weight provides significant simplification of vessel manufacture, reduction of amount of passes and duration of welding of circumferential welds, power consumption. 25 Ref., 1 Tabl., 5 Fig.
all-metal high-pressure vessels, pipes, stresses, welded joints, structure, mechanical properties, cyclic strength, dimension-weight indices
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