汽轮发电机组轴系扭振固有特性计算  

Calculation of Inherent Characerisics of Steam Turboset Shafting

作　　者：杨雪静[1] 唐贵基[1] 向玲[1] 

机构地区：[1]华北电力大学机械工程系,保定071003

出　　处：《汽轮机技术》2009年第6期423-424,436,共3页Turbine Technology

基　　金：河北省自然基金资助项目;编号:E2008001237

摘　　要：在轴系扭振的研究中固有特性的计算方法是基础工作之一。将带有附加集中惯量的多段集中质量数学模型与修正后的Riccati传递矩阵法相结合,应用于汽轮发电机组轴系扭振的固有特性计算中。通过理论分析和对国产300MW汽轮发电机组轴系的扭振固有特性的实际计算,并与现场实测结果进行对比,表明该方法既简单又具有较高精度。适合于多跨大型轴系的扭振固有频率和振型的计算。In the study of torsional vibration of the shaft, basic work. In this papper, introducing the based on the method of calculating the inherent characerisics is one of the discrete method of additional focus of inertia with the revised combination of Riccati transfer matrix to the inherent characerisics calculation of Steam turbine generator. Through theoretical analysis and calculations of the inherent characerisics of domestic 300MW turbine-generator shaft torsional vibration, and with Field measurement results were compared show that the method is simple and has high accuracy. And suitable for large-scale multi-span shaft torsional vibration of nature frequency and mode shape calculations.

关 键 词：汽轮发电机组 轴系扭转振动 Riccati传递矩阵法 数学模型 固有频率 

分 类 号：TK263.6[动力工程及工程热物理—动力机械及工程]