SEALING ARRANGEMENT FOR INTERNAL TUBESHEET FOR TUBULAR HEAT EXCHANGERS

摘要

Sealing arrangement for internal tubesheet for tubular heat exchangers comprising, a gasket (21) fitted between shoulder (51) and tubesheet (4), the gasket (21) being made of spiral wound construction but without any metallic rings in the same and without any locating groove in the adjoining components On the outer side of the tubesheet, channel box (22) being provided with its inner face resting on the shoulder provided on outer diameter of the tubesheet (4) while the outer face of the channel box (22) being reduced in diameter and arranged to align with the centerline of the push bolts (13), the outer face of the channel box resting against and attached to annular ring (12) and push bolts (13) being provided in the threaded holes that reach up to the outer face of the internal flange (24). The push bolts (13) when tightened loading the annular ring (12) from its outer side in turn loading the gasketed joint through channel box (22) and tubesheet (4).