Patent ID: 11884306
Assignee: TATA STEEL NEDERLAND TECHNOLOGY B.V.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A tube section, having a length L, for constructing a tube suitable for underpressure applications, with an incircle having a diameter of at least 2 m,
wherein the tube section comprises:
a plurality of longitudinal stringers,
a plurality of circumferential sections, and
a plurality of thin-walled skin sections having a radius of curvature R and wherein the curvature extends along the entire length of the thin-walled skin sections,

wherein the longitudinal stringers are connected to an inner surface of the circumferential sections, wherein the circumferential sections are spaced from each other along the length of the longitudinal stringers;
wherein the plurality of longitudinal stringers are connected to the inner surface of the circumferential sections to be substantially equidistantly spaced from each other along the inner surface of the circumferential section to form a skeletal framework for attaching the thin-walled skin sections;
wherein the thin-walled skin sections have a pair of opposed long edges and a pair of opposed short edges, wherein the long edges of the thin-walled skin sections are mounted fixedly and air-tightly to the longitudinal stringers, and wherein, in use, the thin walled sections between the stringers are loaded in tension.