CHANGEABLE BRANCH PIPE AND METHOD OF CHANGE OF BRANCH PIPE IN PRESSURE VESSEL

摘要

FIELD: pressure vessels. SUBSTANCE: initial branch pipe is removed and edges of initial weld seam are prepared. Hole thus freed is partially bored from the inside of vessel. Bush with chamfer for welding is placed in bored portion of hole and changeable nozzle is placed in bush having chamfer for welding. Bush and changeable nozzle are welded on inner side of vessel wall. EFFECT: enhanced reliability. 4 cl, 3 dwg