Thermal Analysis Of Non-metallic Expansion Joints

Non-metallic expansion joints is made of polytetrafluorethylene, rubber or fibre. Without self-reactive forces, can it eliminate sound and high vibrations and be capable of handling larger movement in less space. It has better corrosion resistance and can bear high temperatures also. The use of this product has expanded virtually in industry which conveys liquids and gases. Based on the heat transfer theories and FEA parametric analysis, ANSYS is used to build simple model of the non-metallic expansion joints. By choosing the original parameters of the environment and the variables for the analysis program, the thermal field influenced by structural variables and velocity of the gas flowing in the piping is presented. Besides the analysis of the simple model, thermal analysis is made in 3 actual types of the non-metallic expansion joints, then experiment is processed to testify the calculated results and the rationality of the parameters and methods which are used in the thermal analysis of non-metallic expansion joints. And it may contribute much to theory and engineering for non-metallic expansion joint.