GAS PIPE STRUCTURE FOR DUST-CONTAINING GAS

摘要

PURPOSE:To prevent a nut at the inner tube surface from being dropped due to erosion and to enable the thermal extension/shrinkage of inner tube to be made. CONSTITUTION:A gas tube or pipe structure having a heat insulation material is interposed between an outer pipe having a pressure resistant property and an inner pipe 3 having a wear resistance to flow dust-containing gas at a high rate under high temp. and high pressure conditions, is constituted such that support plates 12 extending in the inner dia. direction are arranged at a specified interval on the inner surface of the outer pipe 2. The plates 12 are bent slantly in the pipe axial direction and to the tip the outer face of the inner pipe 3 is fixed.