Damping vibration reduction technology of heat exchanger pipeline
                                                     WAN Fangteng, HE Lidong, DING Jichao, FAN Wenqiang
            (Engineering Research Center of Chemical Safety Ministry of Education,Beijing University of Chemical Technology Beijing 100029)

Abstract: Aiming at solving the serious vibration problem of the outlet pipe of the atmospheric tower heat exchanger of a chemical plant, ensuring the safe operation of the pipeline, the research on vibration mechanism and vibration reduction method of heat exchanger pipeline were carried out . The natural mode of the pipeline was calculated by ANSYS finite element software, and the fluid excitation inside the pipe was calculated by Fluent finite element software for the purpose of analyzing the fundamental cause of pipe vibration. Combining the actual installation conditions and finite element simulation, the effect of damping technology on the heat exchanger pipeline was explored .The viscous damper was installed at a certain place of pipe. After using damping technology, the vibration of heat exchanger pipeline was successfully reduced. The results indicate that the damping technology can effectively reduce the pipeline vibration, and energy of vibration is significantly absorbed ，moreover, the original structure of pipe do not be changed by damping technology and vibration energy do not be transported.

Key words: heat exchanger; vibration of pipeline; finite element analysis; damper