典型输气站场管道流固耦合振动特性分析  

Analysis on Fluid-Structure Interaction Vibration Characteristics of Pipelines in Typical Gas Transmission Yards

作　　者：张凯煊 栗佳 闫伟 包瑞新[1] 宋晓光 ZHANG Kaixuan;LI Jia;YAN Wei;BAO Ruixin;SONG Xiaoguang(School of Mechanical Engineering,Liaoning Petrochemical University,Fushun Liaoning 113001,China;School of Further Education,Liaoning Petrochemical University,Fushun Liaoning 113001,China;Fushun Technology Innovation Research Institute,Fushun Liaoning 113001,China)

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001 [2]辽宁石油化工大学继续教育学院,辽宁抚顺113001 [3]抚顺市技术创新研究院,辽宁抚顺113001

出　　处：《当代化工》2024年第12期2982-2989,共8页Contemporary Chemical Industry

基　　金：2021辽宁省教育厅基本科研面上项目(项目编号:LJKZ 0413)。

摘　　要：输气站场管道振动超标问题严重威胁到站场的安全运行,其中三通管道作为输气站场内易于出现振动问题的关键部位,受到研究人员的广泛关注。针对双进单出的三通汇管,采用双向流固耦合分析方法进行研究。计算得出管道结构的变形图、应力分布图,从中得出管道振动响应最大的位置。重点分析该位置的振动位移、速度以及加速度随时间变化的情况。改变脉动压力幅值以及分支管的管道外径,探究脉动压力幅值以及管道外径对管道振动特性的影响。结果表明:随着脉动压力幅值由2 MPa增大到5 MPa,管道的振动位移增大0.95倍,速度和加速度增大3.5倍;管道外径由48 mm减小到40 mm,管道的振动位移减小到原来的3/4,速度和加速度减小到原来的2/3。分析结果对输气站场管道的工艺设计以及结构设计具有一定的指导意义。The problem of excessive vibration of gas transmission station pipelines seriously threatens the safe operation of the station yard,and the three-way pipeline,as a key part of the gas transmission station that is prone to vibration problems,has received extensive attention from researchers.In this paper,the bidirectional fluid-structure interaction analysis method was used to study the double-in,single-output three-way manifold.The deformation map and stress distribution map of the pipeline structure were calculated,from which the position with the largest vibration response of the pipeline was obtained.The vibration displacement,velocity,and acceleration over time at that location were analyzed.The pulsation pressure amplitude and the outer diameter of the branch pipe were changed,and the influence of the pulsating pressure amplitude and the outer diameter of the pipe on the vibration characteristics of the pipeline was explored.The results showed that with the increase of pulsation pressure amplitude from 2 MPa to 5 MPa,the vibration displacement of the pipeline increased by 0.95 times,the speed and acceleration increased by 3.5 times,the outer diameter of the pipe decreased from 48 mm to 40 mm,the vibration displacement of the pipe is reduced to 3/4 of the original size,and the velocity and acceleration are reduced to 2/3 of the original amount.The analysis results have certain guiding significance for the process design and structural design of gas transmission station pipelines.

关 键 词：管道振动 双向流固耦合 振动响应 脉动压力 

分 类 号：TH113.1[机械工程—机械设计及理论]