球磨机振动仿真及分析

Vibration Simulation and Analysis of Ball Mill

球磨机作为石油化工企业的关键耗能设备,在国民经济中占据核心地位。其采用的永磁直驱系统显著提升了运行效率,并在节能方面取得显著成效。然而,转子与辊筒的一体设计使得偏心等机械问题复杂且突出,同时定转子间缺乏支撑结构,气隙均匀度难以保证,导致转子偏心风险增加,加剧球磨机振动。聚焦于球磨机永磁同步电机的电磁力研究,通过计算径向气隙磁密和电磁力密度,并仿真不同偏心状态下的振动加速度,探究了抑制偏心和减振的方法。本研究旨在为球磨机的稳定运行提供理论和技术支持,以期降低能耗、提升效率,并减少机械故障。

As a key energy consuming equipment in petrochemical enterprises,the ball mill occupies a core position in the national economy.Its adopts the permanent-magnet direct drive system,which has significantly improved the operating efficiency and has achieved the remarkable results in energy saving.However,the integrated design of the rotor and roller makes the mechanical problems complex and prominent such as eccentricity and the lack of support structure between the stator and rotor,so the air-gap uniformity is difficult to ensure,which results in the increased risk of rotor eccentricity and the aggravated vibration of ball mill.This paper focuses on the study of electromagnetic force of PMSM of ball mill,and explores the methods of suppressing eccentricity and damping vibration by calculating the radial air-gap magnetic density and electromagnetic force density as well as simulating the vibration acceleration under different eccentricity states.The purpose of this study is to provide theoretical and technical supports for the stable operation of ball mill,so as to reduce energy consumption,improve efficiency and reduce mechanical failures.