大功率往复泵曲轴转子动力学特性研究  

Research on Dynamic Characteristics of Crankshaft Rotor of High Power Reciprocating Pump

作　　者：张俊峰 张春光 刘光恒[1] 刘佳慧 褚帅 安磊 Zhang Junfeng;Zhang Chunguang;Liu Guangheng

机构地区：[1]沈阳仪表科学研究院有限公司,沈阳110043

出　　处：《机械制造》2020年第10期17-20,41,共5页Machinery

基　　金：辽宁省自然科学基金资助项目(编号:2019-MS-309);沈阳市“双百”工程项目。

摘　　要：为避免大功率往复泵曲轴在工作转速范围内发生共振,应用有限元法建立曲轴转子支撑系统有限元模型,对曲轴转子进行模态分析、坎贝尔图分析、不平衡响应分析、启动过程响应分析,得到曲轴转子的前六阶固有频率及振型。通过坎贝尔图观察曲轴转子固有频率随转速的变化规律,利用不平衡响应分析得到共振频率点,进而验证模态分析的准确性。通过分析曲轴轴心的运动轨迹,验证曲轴设计的合理性。通过对大功率往复泵曲轴转子动力学特性进行研究,确认曲轴转子在整个工作转速范围内不会出现共振,运行安全,满足设计要求。In order to avoid the crankshaft of high power reciprocating pump from resonating within the working speed range,the finite element method was used to establish a finite element model of the crankshaft rotor support system,and the crankshaft rotor was subjected to modal analysis,Campbell diagram analysis,unbalance response analysis,and starting process response analysis and the first six-order natural frequencies and vibration modes of the crankshaft rotor was obtained. The change law of the natural frequency of the crankshaft rotor with the speed was observed through the Campbell diagram,and the unbalanced response analysis was used to obtain the resonance frequency point,and then the accuracy of the modal analysis was verified. By analyzing the kinematic trajectory of the crankshaft axle center,the rationality of the crankshaft design was verified. Through the study of the dynamic characteristics of the crankshaft rotor of the high power reciprocating pump,it is confirmed that the crankshaft rotor would not resonate in the entire working speed range,the operation is safe,and the design requirements could be satisfied.

关 键 词：往复泵 曲轴 转子 动力学 研究 

分 类 号：TH6[机械工程—机械制造及自动化] TB752.21[一般工业技术—真空技术]