基于仿真的烧结生产建模与振动分析

Modeling of Sintering Production and Analysis of Vibration Based on Simulation

在烧结生产中,风机的振动是一个严重的问题,利用仿真方法分析烧结生产线上主要振动部位,是一个重要且可行的方法。建立了烧结生产中气体流动的动力学模型,探讨了有限元分析方法在求解模型中应用。在ANSYS软件里建立了烧结主抽风系统的二维分析模型,在仿真过程中,根据料层透气性的不同,综合考虑流量、负压和温度等因素的影响,探讨烧结过程中主抽风系统的气动特性,给出了不同透气性条件下的烧结管道内的流速分布图和压力分布图。分析了烧结生产中发生喘振的原因,给出了烧结主抽风系统中最容易发生故障的区域。仿真结果表明:为保证烧结过程正常运作,料层透气性应保持在一合理范围内。研究成果可为优化烧结生产过程及提高烧结产量提供理论参考。

In the process of sintering production, fan vibration is a serious problem. It is an important and feasible method to use simulation for analysing the primary vibration parts on the sintering product line. In this paper, a dynamics model of gas flow in the production of sintering has been established, then the application of a finite element method for solving the dynamic model also has been discussed. A two - dimensional model of sintering and ventilation systems has been put forward with ANSYS software. In the simulation process, according to the difference of permeability layers, the influences of flux, vacuum and temperature are considered, and the aerodynamic characteristics of the main ventilation system in the sintering process are analyzed. The different velocity distribution and pressure distribution inside the sintering tubes under different permeability have been presented. The simulation results show that permeability layers should be kept within a reasonable range to ensure the normal operation of sintering process. They are helpful to optimize the sintering process and improve the production of sintering.