数据驱动的大型回转窑支撑系统数值模拟研究

Research on Numerical Simulation of Large-Scale Rotary Kiln Support System Driven by Data

回转窑是氧化铝生产的核心设备,由筒体、托轮、轮带、挡轮和传动设备等组成,是复杂的超静定运行系统。筒体是整个系统的主要支撑部件,物料的物理、化学反应均在筒体内完成,回转窑筒体的运行状态直接影响物料的烧成程度。基于超静定连续梁模型和赫兹理论,本文将筒体视为简支梁,对各挡位支撑力进行求解,并定义筒体当量密度来处理整个筒体的重力,将传统力学方法求得的支撑力与ANSYS求解的支撑力进行比较,为ANSYS分析提供理论支持,综合考虑多个附件的荷载对筒体刚度造成的复杂影响,依据筒体的应力图、变形图来确定其危险截面,根据应变云图结果,确定变形量最大的挡位,保证筒体稳定运行,为回转窑结构设计优化提供参考。

Rotary kiln is the core equipment for alumina production,which is composed of cylinder,supporting roller,wheel belt,retaining wheel and transmission equipment,and is a complex ultra-static running system.The barrel is the main supporting component of the entire system,the physical and chemical reactions of the materials are complet⁃ed in the barrel,the operating state of the rotary kiln shell directly affects the degree of material firing.Based on the statically indeterminate continuous beam model and the Hertz theory,this paper regarded the cylinder as a simply supported beam,solved;the support force of each gear,and defined the cylinder equivalent density to handle the gravity of the entire cylinder.The support force obtained by traditional mechanics method was compared with the sup⁃port force solved by ANSYS to provide theoretical support for ANSYS analysis;considering the complex impact of the load of multiple accessories on the rigidity of the cylinder,the dangerous section was determined according to the stress diagram and deformation diagram of the cylinder;according to the results of the strain cloud diagram,the gear with the largest amount of deformation was determined to ensure the stable operation of the cylinder,which provided a reference for the structural design optimization of the rotary kiln.