METHOD FOR CONSTRUCTING SUPERHEATER AND/OR REHEATER MODULES

摘要

A method for shop assembly of superheater and/or reheater modules wherein a segment of a superheater or reheater header, as it is formed in the shop, is accurately positioned in a vertical orientation with respect to a fixed reference base. A lifting and shipping frame is particularly positioned on the reference base with respect to the header segment. Individual tube panels are placed in the frame and joined to the header until a complete module is built up. The module may then be conveniently shipped in its frame to the erection site where it may be positioned and joined to similar modules to form the unitary superheater or reheater structure.