Finite Element Analysis And Stress Evaluation Of A Heat Exchanger With Tilted Conical Shell And Tubes

In this thesis, a three dimensional finite element model of a heat exchanger with tilted conical shell and tubes is built by ANSYS software, and then the finite element analysis for the equipment are studied by the model.In this thesis, research works are done as follows.First, geometric model and finite element analysis model are built, which based on that dimensions and processing of the equipment are studied, and its complexity considered;Secondly, with according to processing condition, conduction heat is calculated for the entire heat exchanger and the whole temperature field in the equipment is obtained;Thirdly, the strength of the heat exchanger is analyzed by the finite element model under various of combined loads from pressure in the tube, shell and temperature changing, and then stress intensity under the various of cases and location are gotton; meanwhile, the loading condition for operating, emergency and caustic washing conditions are built. Fourthly, with according to the JB4732—1995《Steel pressure vessels——Design by analysis》, stresses in results of finite element analysis are assessed; Finally, the life in fatigue for the heat exchanger is verified and checked.The analysis results show that the whole model and its elements of the heat exchanger meet the strength requirement, and also do fatigue strength within life of design. So the design of the equipment is safe.This analysis results can be used as useful reference data to design this kind of heat exchanger in China.