Vibration Analysis And Numerical Simulation Of Direct Air Cooling System Condensate Pipeline

Air-cooled units use air to cool the condenser system. The use of air-cooling technology can save a lot of production water and ease the stress of building power plants in the coal-rich region. However, the air-cooled platform is usually tens of meters height from the ground. The condensed water flows down from a high place, resulting in a continued vibration of condensate piping systems.With the help of finite element analysis software, the finite element model of the condensate pipeline system in a 330MW power plant is established. The natural frequencies and mode shapes of the condensate pipeline system are calculated by finite element analysis software. Then, the inherent characteristics of condensate water piping system are analyzed. According to the results of fluid, the pressure-time curve of fluid force is draught. With the help of Labview software, the time course curve is transformed into frequency curve and the distribution of fluid force in the low frequency region is analyzed.The results show that the work frequency of excitation force is focused on the low-frequency region and piping natural frequency coincidence. It satisfies the condition of resonance of the piping system. As to the vibration phenomena of the condensate piping system, the power plant reforms the drop pipe. According to the revised programs the Pipe and its flow model is analyzed by numerical simulation, which verifies the correctness of the revised program. Finally, the Piping body structure is calculated by the unidirectional flow solid coupling calculation.