THE SIMPLIFIED METHOD FOR STRESS ANALYSIS ON TUBESHEET OF FIXED TUBULAR HEAT EXCHANGER WITH EXPANSION JOINT

摘要

The simplified FEA method was proposed on tubesheet of fixed tubular heat exchanger with bellows expansion joints. Taking the waste heat recovery heat exchanger for example, the entire model and the simplified model were established using ANSYS software, and the calculation results of the key components of the two models were compared. The results show that distribution of TRESCA stress intensity and radial displacement of tubesheet for the simplified model are consistent with those of the whole model, but the stress of the simplified model is slightly larger than that of the entire model, so the result is conservative. It means that the simplified method is feasible. Meanwhile, application research on tubesheet of different kinds of heat exchanger was made using the simplified design method, it provides an efficient FEA method of the tubesheet design for heat exchanger with expansion joints.