The Structure Analysis Of Tube Plate And Numerial Simulation Of The Heat Exxhanger Performance

Heat exchanger is widely used in chemical, petrochemical, power, pharmaceutical, metallurgy, refrigeration and universal equipment of light industries. Tubular heat exchanger are easy to create, have low production cost and large select range, are easy to clean, have strong practicability. It is reliable, can adapt to the high temperature and high pressure. So far as it is considered as traditional standard equipment used in many industrial sector. This paper analyzed the KLQ type heat exchanger tube sheet from the following aspects.At first, according to the heat exchanger tube plate theory, simplifies mathematical model of the bolt stress, considering only bolt to bolt hole of uniformly pressure and gasket pressure. According to the drawing, using ANSYS APDL language to establish the tube sheet 1/4 model, and finally mesh, loading, solution, save it as batch files. The tube plate structure parameters in batch files are set to variable.Then, write the parameters input interface of the tube plate structure and fluid parameters using VB, the parameters in batch files can be modified in it. Using the ANSYS button call the batch files, realize the automatic analyses of the seven conditions.Through stress analysis of the tube sheet seven conditions, we get the dangerous condition and dangerous path in it. In a more dangerous working condition, we change the thickness of the tube sheet and other parameters are fixed and get the strength influence by the thickness, and then study the intensity influence of the tube sheet and joint thickness.According to the analysis before, get the risk working condition, risk path, big influence factors. Then do the tube sheet structure optimization analysis using the ANSYS optimization module, and safety evaluation the optimization result, the result has guiding significance for production.Finally, using the FLUENT software, intercept part of the heat exchanger, does the three-dimensional flow analysis in the condition of remove the cooling fin and retain the cooling fin, and analysis the heat transfer effect of the cooling fin.