充液管道流致振动影响因素分析  

Liquid-filled Pipeline Flow-induced Vibration Influence Factor Analysis

作　　者：宋长松 杨仕奇 许东波 李渊 SONG Changsong;YANG Shiqi;XU Dongbo;LI Yuan(Anhui Provincial Group Limited for Yangtze-to-Huaihe Water Diversion;School of Precision Instrument and Optoelectronic Engineering,Tianjin University)

机构地区：[1]安徽省引江济淮集团有限公司 [2]天津大学精密仪器与光电子工程学院

出　　处：《管道技术与设备》2025年第1期9-14,40,共7页Pipeline Technique and Equipment

摘　　要：文中研究长输管道在运送油气资源过程中,流体与管壁相互作用导致的流致振动现象。振动信号的强度与管道的自身状态相关。利用ANSYS仿真软件进行建模分析,针对正常管道与不同堵塞程度的管道进行有限元仿真,分析了充液压力、管内流态等因素影响下的管道固有频率及流致振动信号的特征变化,获取了流速、压力及湍流动能与振动信号相应的变化关系。结果表明:充液压力对管道固有频率的影响可忽略不计,而堵塞状态下的管道因流速、压力和湍流动能的变化,导致振动信号强度显著变化。文中研究为管道状态监测提供参考。This study aims to investigate the phenomenon of flow-induced vibration in long-distance pipelines during the transportation of oil and gas resources,caused by the interaction between the fluid and the pipe wall.The intensity of the vibration signal was related to the state of the pipeline itself.ANSYS simulation software was used for modeling and analysis,and finite ele-ment simulation was carried out for normal pipelines and pipelines with different degrees of clogging,analyzing the characteristic changes of pipeline natural frequency and flow-induced vibration signals under the influence of various factors,such as fluid filling pressure and flow state,and the corresponding changes of flow velocity,pressure,turbulent kinetic energy and vibration signals were obtained.The results indicate that the influence of fluid pressure on the pipelines natural frequency is negligible.However,the blocked pipelines exhibit significant changes in vibration signal intensity due to variations in flow velocity,pressure,and turbulent kinetic energy.This research provides reference for pipeline condition monitoring.

关 键 词：充液管道 流致振动 有限元分析 流态分析 

分 类 号：U171[交通运输工程]