多级泵平衡盘动态平衡的理论研究

摘要

Based on the structure characteristic and working principle of the balance disc, the process of balance disc movement equilibrium has been analyzed. The clearance flow in balance disc studied by using the continuity equation and momentum equations , the function expression of dynamic balance force has been deduced. And then accroding to the dynamic balance of force exerted on the balance disc-rotor system, motion equation about the system has been established and the relationship between axial displacement of balance disc and time can be got in theoty, which provides the theoretical basis for researching "balance dish dynamic performance and axial vibration.%基于多级泵平衡盘的结构特点和工作原理,分析了平衡盘运动平衡的过程.利用连续方程和动量方程对平衡盘间隙流动进行了研究,推导出了平衡盘动态平衡力的函数表达式.进而,根据作用在平衡盘-转子系统上力的动态平衡建立了该系统的运动方程,理论上得到了多级泵平衡盘轴向位移与时间的关系,为研究平衡盘-转子系统的动态性能和轴向振动提供了理论基础.