End connector for heat exchanger tube - consists of ring fitting into expanded end of tube, clamping its outer surface against tube-plate

摘要

The heat exchanger has a tube base and connection sockets, to which the tubes are frictionally connected. The end of the tube (2) is expanded, and fastened in a bore (1 ') of the tube base (1). A ring fitting is used, which has a connection spigot (7) with a central bore (11) engaging frictionally inside the tube and a flange (5), which is connected fluid and gas-tight to the tube base. The connection element has a ring-shaped recess (9), facing the tube base. USE - Fluid-tight connection of heat-exchanger tubes to tube plate.