FLEXIBLE HYDROTECHNICAL TUBE AND METHOD FOR ITS CONSTRUCTION Russian patent published in 1995 - IPC

FIELD: hydraulic engineering. SUBSTANCE: flexible hydrotechnical tube consists of circular member joined to one another to form separate sections having flanges at their ends. Mounting holes are made in circular members, and correspondingly, in flanges. Circular members are connected to one another, by longitudinal tie-rods passing through mounting holes and secured in flange holes. Tube is assembled using the following sequence: prior to installing circular members into section, through mounting holes parallel and symmetrical relative to rotation axis of circular member are made by its rotation with preset angular intervals and perforations at preset distance from axis of circular member. Circular members are assembled into tube section by stringing them with their central hole on cantilever horizontal beam, aligning coaxially mounting holes of circular members between one another and with mounting holes in flanges. Then, connecting tie-rods are passed through holes. After adjusting by compression, connecting tie-rods are secured in flanges and compression force is relieved. EFFECT: higher efficiency. 12 cl, 10 dwg