摘要
机组及泵房振动问题日益突出,给泵站带来的威胁不容忽视。研究了大型泵站立式全调节轴流泵振动特性,为后续的工程建设及类似工程的运行管理提供参考。主要以江都四站4号泵机组及7号泵机组为例,通过对两台机组进行多工况、多测点、多振动参数的现场测试,整理数据,绘制相应的振幅统计、时域波形、位移频谱图,分析各主要测点的振动幅值、振动频率随角度、水位的变化规律,得出机组在不同叶片运行角度下、不同水位差的条件下立式轴流泵叶轮外壳振动变化较为明显,故水泵振动值大主要受水力和机械因素影响。
With the vibration problem of unit and pump house becoming more and more outstanding, the threat to pumping station cannot be ignored. The vibration characteristics of vertical fully regulated axial flow pump in large pump stations are studied in this paper, which can provide reference for the subsequent operation and management of similar projects. This paper takes Jiangdu No. 4 and No. 7 Pump in four- pump station unit as an example to finish the spot test and data collected of multi-state, multi-measuring points and vibration parameters. It is concluded that the vibration of impeller casing of vertical axial flow pump is obvious under the condition of different blade running angles and different water level differences by drawing the amplitude statistics, the corresponding time-domain waveform and frequency spectrum and analyzing the variations of the main vibration amplitude, vibration frequency, angle with the water level. So the vibration value of water pump is mainly affected by hydraulic and mechanical factors.
作者
李扬
张宇
孙岚清
郭凯
唐燕
田扬
徐玲
陆明浩
颜蔚
LI Yang, ZHANG Yu, SUN Lan-qing, GUO Kai, TANG Yan, TIAN Yang, XU Ling, LU Ming-hao, YAN Wei(Jiangdu Water Management Division of Jiangsu Province, Yangzhou 225200, Jiangsu Province, Chin)
出处
《中国农村水利水电》
北大核心
2018年第3期81-91,95,共12页
China Rural Water and Hydropower
关键词
立式轴流泵
振动特性测试
位移频谱
vertical axial flow pump
vibration characteristic test
spectrum of displacement
