南水北调江都四站装置模型振动特性的试验研究  

Experimental Investigation on Vibration Characteristics of Jiangdu Fourth Pumping Station Device Model

作　　者：张德胜[1] 施卫东[1] 关醒凡[1] 曹卫东[1] 王敏[1] 

机构地区：[1]江苏大学,江苏镇江212013

出　　处：《流体机械》2009年第11期1-4,共4页Fluid Machinery

基　　金：江苏省"六大人才高峰"项目(06-D-020);江苏省研究生创新工程计划(CX08B-064Z)

摘　　要：为了确保江都四站轴流泵机组的安全稳定运行,采用三个高频振动加速度传感器对装置模型不同工况下的振动信号进行了采集,并运用加速度有效值对测量结果进行了分析。试验结果表明,在轴流泵转轮-4°、-2°、0°、+2°和+4°叶片角下,泵段振动测量位置为x、y、z三个方向的振动强度都随扬程的增高而逐渐增强。在扬程高于7.0m的工况下,振动强度随扬程的变化明显,振动幅度急剧提高。在相同的扬程工况下,三个方向的振动加速度有效值在不同的叶片角下变化幅度较小。在叶片角为-2°、最高扬程为8.8m时,x、y、z方向的加速度有效值分别为0.574、0.761和0.539m/s2,装置模型振动较强,但机组没有出现不稳定现象,该结论为江都四站实型机组稳定运行提供了科学依据。In order to make the Jiangdu fourth pumping station run stably and safely,three high frequency vibration accelerometers were adapted to measure the vibration characteristics of the device model,and the measurement results were analyzed using RMS of vibration acceleration.Experimental results show,at blade angles of-4°、-2°、0°、＋2°and ＋4°,vibration intensity at three different directions of x,y and z enhances with the head increasing.When the head is higher than 7.0 meter,vibration intensity becomes stronger. At the conditions of same head, the change magnitude of RMS of vibration acceleration is small and almost uniform. At condition of head 8.8m and blade angle of -2°, the RMS of vibration accelerations is 0. 574,0.761and 0.539 m/s2 respectively at directions of x, y and z, at this time, the device model run stably without instable phenomenon, and eould ensure stable operation of the pump prototype device.

关 键 词：南水北调工程 轴流泵 装置模型 振动 试验研究 

分 类 号：TH311[机械工程—机械制造及自动化]