EXPANSION JOINT STRUCTURE

摘要

PURPOSE: To perform an easy and rapid work to replace an expansion bellows and to reduce a cost. CONSTITUTION: An expansion joint structure comprises flange parts. 17 with a given opposite distance 16 between the end parts 12a of ducts 12; and channels 18 for coupling arranged in such a state to protrude radially outwardly of the duct 12 and mounted along the flange part 17 in such a manner to provide a gap 19 for deformation therebetween. Further, the expansion joint comprises an expansion bellows 25 attached to an inner surfaces 18a in a radial direction of the duct 12 of the channel 18 for coupling in such a manner to close the gap 19 for deformation; and an expansion taper part 24 formed in a position in the vicinity of the end part 12a of each duct 12 and increasing the sectional area of the duct 12 toward the flange part 17.