Selected Problems of Strength Calculation of Power Boiler Steam Superheater

The paper discusses the problems of sizing and evaluation of the steam superheater header in the connecting area with a stub pipe superheater III in boiler BB-1150. The basic element of the assessment was strength calculations using numerical methods. The most important element of the work was to develop original computational models for thermal and structural calculations with extended forms of boundary conditions using the finite element method. The developed models of the tested object were subjected to the analysis of the state of deformation in a steady state and transient state. The results of computer simulations of the welded connection between the header and the coil spigot are presented in details [1].