压缩机梳齿密封内部流场及激振力研究

以某大型压缩机转子振动试验台的平衡盘梳齿密封为研究对象,采用CFD方法,分析了转轴在不同相对偏心距下,定转速变压差和定压差变转速时的三维梳齿密封内部流场,总结了流场内部压力、速度和温度的变化规律。确定了由转轴偏心引起的密封激振力,转速升高、相对偏心距及压差增大均会导致激振力增大。

Research on Internal Flow Field and Exciting Force in Labyrinth Seal of Compressor

In this paper,set the balancing disk labyrinth seal in vibration test-bed for a large-type compressor rotor as research object,CFD method is adopted to analyze the internal flow field of 3-D labyrinth seal of rotating shaft under the condition of different relative eccentricity with constant speed and variable pressure difference and with constant pressure difference and variable speed. The changing rules of pressure,speed and temperature inside of flow field are summarized. Furthermore, the seal exciting f...