立式轴流泵装置马鞍区振动特性研究  

Research on Vibration Characteristics of Saddle Region of Vertical Axial Flow Pump

作　　者：庞熙 李文强 刘芸 陈纯 李馨雨 陈松山 PANG Xi;LI Wen-qiang;LIU Yun;CHEN Chun;LI Xin-yu;CHEN Song-shan(College of Electrical and Energy Power Engineering,Yangzhou University,Yangzhou 225127,Jiangsu Province,China;Qingdao Water Utilities Development Service Center,Qingdao 260000,Shandong Province,China;Qingdao West Coast New District Emergency Management Bureau,Qingdao 266400,Shandong Province,China)

机构地区：[1]扬州大学电气与能源动力工程学院,江苏扬州225127 [2]青岛市水务事业发展服务中心,山东青岛260000 [3]青岛西海岸新区应急管理局,山东青岛266400

出　　处：《节水灌溉》2024年第5期66-73,79,共9页Water Saving Irrigation

基　　金：江苏省水力科技项目(2017035)。

摘　　要：为分析叶片角度下立式轴流泵在马鞍区工况的振动特性,采用流体计算软件CFX的数值模拟与泵装置试验结合的方法,在验证计算结果准确性的情况下,数值计算了3个叶片角度、4个流量下的泵段形变、振动特性、压力脉动、非周期性力;并通过试验测试了泵段马鞍区振动性能。研究结果表明,泵段在0.30 QBEP至0.60 QBEP之间存在马鞍区,在马鞍区工况内造成泵段振动的主要因素为叶轮-导叶之间动静交界面的干扰作用;为保证泵装置运行过程中的稳定性,最小运行流量应超过本文所定义的强化马鞍区工况流量;泵装置在马鞍区内运行时,叶片安放角越小越稳定。In order to analyze the vibration characteristics of vertical axial flow pump in saddle region under blade Angle,the numerical simulation method of CFD software CFX and pump device test were used to validate the accuracy of the calculation results.The deformation,vibration characteristics,pressure pulsation and aperiential force of the pump section under 3 blade Angle and 4 flow rates were numerically calculated.Additionally,the vibration performance of the saddle area of the pump is tested by experiments.The results indicate that there is a saddle zone between 0.30 QBEP and 0.60 QBEP.The main factor that causes the vibration of the pump section in the saddle zone is the interference of the dynamic and static interface between impeller and guide vane.To ensure the stability of the pump during operation,the minimum flow rate should exceed the flow rate in the reinforced saddle region defined in this paper.When the pump device is running in the saddle area,a smaller blade setting angle leads to greater stability.

关 键 词：立式轴流泵 马鞍区 形变 振动 模型试验 

分 类 号：S277[农业科学—农业水土工程]