High-pressure feed water preheater of the plate construction type

摘要

In a high-pressure feed water preheater of the plate construction type, in which the water jacket (2), which is welded to the tube plate (1), has a cylindrical shape in the tube longitudinal direction and ends with a cover (3), the cover force is carried off into the jacket (2) via a multi-part segment ring (12). The seal between jacket (2) and cover (3) is made via a detachable flange (17) with an integrated bellows (17'''). The flange is provided with two annular sealing surfaces (16) which act respectively on the cover (3) and on the jacket (2) and which are arranged between screw connections (18', 18'') and the bellows (17'''). <IMAGE>