微型透平膨胀机转子动力学特性分析  

Dynamic Analysis of Micro-turbine Expander Rotor

作　　者：宋笛 王铃玉 张昊[1] 王明月 孟波[2] SONG Di;WANG Lingyu;ZHANG Hao;WANG Mingyue;MENG Bo(Beijing University of Technology,Beijing 100124,China;Beijing Institute of Petrochemical Technology,Beijing 102600,China)

机构地区：[1]北京工业大学,北京100124 [2]北京石油化工学院,北京102617

出　　处：《机械制造与自动化》2022年第2期46-48,共3页Machine Building & Automation

基　　金：北京市自然科学基金资助项目(3182009)。

摘　　要：某微型透平膨胀机在运行期间发生振动超标问题,对其轴系进行转子动力学计算,发现轴系设计不合理,需要将转子系统进行改进。基于传递矩阵法建立改进前、后两个轴系的转子动力学模型,对两个轴系分别进行临界转速以及不平衡响应的计算与分析,对计算结果进行比较,根据API617标准对轴系横向振动计算结果进行评估。改进后的轴系符合工作要求,为此类微型透平膨胀机的转子系统的设计提供参考依据。An excessive vibration of a micro turbine expander occured during operation, and its shafting design was found unreasonable by rotor dynamics calculation, requiring improvement on rotor system. Based on the transfer matrix method, the rotor dynamic model of the two shafting systems before and after the improvement is established, the critical speed and unbalance response of the two shafting systems are calculated and analyzed respectively, the calculation results are compared, and the lateral vibration calculation results of the shafting system are evaluated according to API617 standard. The result shows that the improved shafting system meets the working requirement and provides reference basis for designing of rotor system of micro turbine expander.

关 键 词：微型透平膨胀机 动力学分析 临界转速 不平衡响应 API617 

分 类 号：TH113[机械工程—机械设计及理论]