摘要
采用加速度传感器对一比转数为65的离心泵关死工况下的流动诱导振动进行了测试,并对试验结果进行了详细分析。试验结果表明:1轴向振动加速度脉动呈现一定的弱周期性规律,径向振动加速度脉动没有任何周期性;2蜗壳隔舌处的振动加速度脉动幅值最大;3各测点的最大振动加速度均出现在1 400 Hz附近,大约是叶片通过频率的10倍;4蜗壳5断面处的轴向振动程度是最为剧烈的,而7断面处的径向振动程度是最弱的。
The flow induced vibration in a centrifugal pump at SOC（Shut-off Condition）,whose specific speed is 65,is tested by using acceleration sensors,and the test results are analyzed carefully.The main conclusions are as follows.1 The axial vibration presents weak periodicity,while the radial vibration has no periodicity.2 The fluctuation amplitude at volute tongue is the biggest.3 The biggest acceleration of each test point is at 1 400 Hz,which is about 10 times blade passing frequency.4 The axial vibration at Section 5of volute is the most violent,while the radial vibration at Section 7is weakest.
出处
《中国农村水利水电》
北大核心
2015年第1期176-179,共4页
China Rural Water and Hydropower
基金
国家自然科学基金资助项目(51109095)
国家科技支撑资助项目(2013BAF01B02)
江苏省"六大人才高峰"计划(ZBZZ-040)资助项目
江苏大学高级人才科研启动基金资助项目(13JDG079)
关键词
离心泵
关死点
诱导振动
centrifugal pumps
shut-off condition
induced vibration
