摘要
为了研究管内流体诱导单排平面弹性管束的振动响应特性、验证脉动流对管束振动影响,搭建了流体诱导弹性管束振动的测试试验台,并设置平面管束不同监测点。给定一定速度的流体,利用加速度传感器,对监测点的振动加速度信号进行采集。在管束入口处加三角柱绕流体,再次采集各监测点的振动加速度信号,并进行数据处理分析。流体入口速度在0.1~0.6 m/s范围内,随着流速增加管束振动位移幅值增加0.044 mm;在脉动流影响下随着流速增加管束振动幅值增加0.068 mm;在相同入口流速下,管束振幅在脉动流影响下增加0.004~0.033 mm。试验验证表明:管束振幅在管内脉动流影响下增大且增幅先增后减,为管内流体诱导管束振动提供了试验依据。
In order to study the vibration response characteristics of in-pipe flow-induced vibration of single-row planar elastic tube bundle,and to verify the influence of pulsating flow on the vibration of the tube bundle,the experimental platform for flow-induced vibration of elastic tube bundle was built,and monitoring points were set up at different positions of the planar tube bundle.With the flow of a certain velocity was supplied,the vibration acceleration signals were collected at the monitoring points by the acceleration sensors.A triangular column was added at the entrance of the tube bundle forming a detour flow,the vibration acceleration signals of each monitoring point were collected again,and the data was processed and analyzed.Within the range of 0.1~0.6 m/s fluid inlet velocity,the vibration displacement amplitude of the tube bundle increased by 0.044 mm with the increase of the flow velocity.Under the influence of pulsating flow,the vibration amplitude of the tube bundle increased by 0.045 mm with the increase of the flow rate.At the same inlet flow velocity,the amplitude of the tube bundle increased by 0.004~0.033 mm under the influence of pulsating flow.The experiment verified that the amplitude of tube bundle would increase under the influence of pulsating flow in the tube but the increment would decrease,which provided the experimental basis for the flow-induced vibration of the elastic tube bundle.
作者
董延颖
葛培琪
王德京
DONG Yanying;GE Peiqi;WANG Dejing(School of Mechanical Engineering,Shandong University,Jinan 250061,China;Key Laboratory of High Efficiency and Clean Mechanical Manufacture,Ministry of Education,Jinan 250061,China)
出处
《自动化仪表》
CAS
2019年第12期51-54,共4页
Process Automation Instrumentation
基金
国家自然科学基金资助项目(51475268)
关键词
平面弹性管束
换热器
流体诱导振动
脉动流
传感器
Planar elastic tube bundle
Heat exchanger
Flow-induced vibration
Pulsating flow
Sensor
