文献类型：会议论文

英文题名：Study on the Vibration Displacement of Hydraulic Pipeline System Excited by Fluid Impact

作者：Zhou, Zhijin Wen, Duo Liu, Aijun

第一作者：Zhou, Zhijin;周知进

机构：[1] School of Mechanical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [2] Mechanical and Automotive Engineering College, Guangxi University of Science and Technology, Guangxi, Liuzhou, 545616, China

第一机构：贵州理工学院机械工程学院

通信机构：School of Mechanical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China|贵州理工学院机械工程学院;贵州理工学院;

会议日期：February 17, 2023 - February 18, 2023

会议地点：Virtual, Online, China

语种：英文

外文关键词：Fluid structure interaction - Hydraulic equipment - Piping systems - Water pipelines

年份：2023

摘要：Hydraulic impact had an effect on pipeline vibration displacement, so it was important to study the external lateral impact periodic force on fluid-structure coupling vibration displacement of hydraulic pipeline. Based on Bernoulli beam model, the fluid-structure coupling vibration equation of flexible pipeline was established by analyzing the stress of flexible pipeline under the action of internal flow. The hydraulic system pipeline was simulated whether the pipeline was subject to periodic impact force. The displacement-time curves in x, y and z directions of vibration monitoring points of hydraulic flexible pipelines were obtained, and the maximum displacement-time curves of fluid-structure coupling vibration under different pressure hydraulic impact were obtained. The simulation results were shown that the vibration of monitoring points in x, y and z directions of hydraulic impact pressure increased and the total displacement of the pipeline middle section of the hydraulic system decrease continuously, and then they tend to stabilize after a period of attenuation. The maximum displacement value of the X-direction monitoring point in the middle part of the hydraulic system pipeline was 9.5e -5 m, and the displacement vibration was stable at 0.135s. The maximum y-displacement was 3.1e -4m, and the vibration was stable at 0.2 s. The maximum z displacement was 1.32e-4 m, and the vibration was stable at 0.36 s. The total displacement was 3.35e -4 m, and the vibration was stable at 0.43s. Increasing the impact pressure, the maximum displacement of the hydraulic pipeline vibrations were larger, and the attenuation of the maximum values were faster. The research results provide a reference for the hydraulic system to prevent pressure shock and reduce vibration. ? Published under licence by IOP Publishing Ltd.