Abstract

According to the safety problems of vibration in high-lift pumping station pressure pipeline, Proposed use the approach of additional water mass, It has established the numerical model of pumping station pressure pipeline based on fluid-structure interaction, To identify the different working conditions modal parameters of Jingtai irrigated area’s pressure pipeline in the stage 2#pump station and the deformation of displacement. To analyse the pressure pipelines of vibration. From the result of numerical simulation:Pressure pipeline is the most easy to stimulate the vibration at the inlet pipe and outlet pipe, in no.4 machine, the vibration amplitude of the High order modal mode of the vibration is bigger than low-order modal vibration mode. And increased along with the order, the outlet pipe which not easy to vibrate is gradually produce vibration deformation. But whether the machine feed line 8 open or not to the whole impact of pipeline vibration is not large. the results of numerical simulation analysis of finite element and the results measured by experiment are basically identical. So the quality model method of the additional water is simple in calculation, and the result is reliable, It has a certain advantage in the pressure pipe of pumping station of fluid-solid coupling simulation applications.

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