叶轮不同布置形式的两级泵模态分析
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摘要
利用UG软件建立两级给水泵叶轮的简化模型,将该简化模型导入ANSYS Workbench软件中,并对该模型进行动力学分析和模态分析。由于普通的叶轮平行布置会使装置产生很大的轴向推力,因此采用叶轮对称布置来解决轴向推力对装置造成的不良影响,并对改进后的叶轮进行模态分析。分析发现,改进后的叶轮布置其各阶固有频率与之前相差不大,其控制方式与控制策略可以沿用,并为后续的进一步改进与分析提供理论基础。
UG software was applied to establish the simplified model of the impeller of a two-stage pump, and then the model was imported into ANSYS Workbench to conduct dynamic and modal analysis. Since common parallel layout of impellers brought about large axial thrust, symmetrical layout of impellers was applied to avoid the negative effects on the device due to the axial thrust. In addition, the modal analysis on the improved impellers was conducted. Analysis results showed the natural frequency of the impellers after layout improvement was close to that before layout improvement, so the control mode and the control strategy could be still in use, which offered theoretical base for further improvement and analysis.
UG software was applied to establish the simplified model of the impeller of a two-stage pump, and then the model was imported into ANSYS Workbench to conduct dynamic and modal analysis. Since common parallel layout of impellers brought about large axial thrust, symmetrical layout of impellers was applied to avoid the negative effects on the device due to the axial thrust. In addition, the modal analysis on the improved impellers was conducted. Analysis results showed the natural frequency of the impellers after layout improvement was close to that before layout improvement, so the control mode and the control strategy could be still in use, which offered theoretical base for further improvement and analysis.
引文
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[2]张景松.流体力学与流体机械之流体机械[M].徐州:中国矿业大学出版社,2007:56-60
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[4]谭磊,曹数良,桂绍波,等.离心泵叶轮正反问题迭代设计方法[J].农业机械学报,2010,41(7):30-35.
[5]王其磊.多级离心泵转子固有频率影响因素的比较[J].排灌机械工程学报,2015,33(1):31-36.
[6]付建国.基于ANSYS Workbench的高扬程多级离心泵转子分析[J].江西水利科技,2016,42(4):244-248.
[7]郑军,杨昌明,朱利,等.离心泵叶轮流固耦合分析[J].流体机械,2013,41(2):25-29.
[8]张晖,李宝良.基于ANSYS软件的高压小流量离心泵泵轴模态分析[J].水泵技术,2010(6):18-21.
[9]刘江.ANSYS 14.5 Workbench机械仿真实例详解[M].北京:机械工业出版社,2014:102-104.
[10]黄志新.ANSYS Workbench 16.0超级学习手册[M].北京:人民邮电出版社,2016:88-104.