脱硫除尘用风机流场模拟及其结构优化研究  

Study on flow field simulation and structure optimization of desulfurization and dust removal

作　　者：李凯[1] 唐铃凤[1] 辛厚智 

机构地区：[1]安徽工程大学机械与汽车工程学院,安徽芜湖241000

出　　处：《重庆文理学院学报（社会科学版）》2016年第2期109-115,共7页Journal of Chongqing University of Arts and Sciences（Social Sciences Edition)

基　　金：安徽省科技攻关项目:脱硫除尘过程装备及其控制系统研发(12010402105);芜湖市科技计划项目:数控机床液体静压导轨控制研究及其产业化(2103cxy08)

摘　　要：对某脱硫除尘用离心风机进行流场模拟和结构优化研究,设计了风机叶轮结构,建立脱硫除尘风机的流道模型,通过FLUENT软件对脱硫除尘离心风机流场进行数值模拟.按照L9(34)正交表,选取叶轮进口直径、叶轮直径、叶片进口角、叶片出口角参数作为设计因素,设计了9组方案,通过正交试验分析了4种几何参数对风机性能的影响,得出叶轮出口角是影响效率和噪音的主要因素,并提出优化设计方案.以风机效率最大为第一目标函数,风机噪音最低为第二目标函数,以D1,D2,βb1,βb2,Z为设计变量加以约束条件,用遗传算法对风机噪音和效率进行多目标优化,获得了最优叶轮结构参数组合,优化后的脱硫除尘风机效率高于原风机,且噪音得到有效控制.The flow field simulation and structural optimization were carried out on the centrifugal fan for a desulphurization. The structure of wind turbine impeller is designed,and the flow channel model of the desulphurization and dust removal fan is established. The numerical simulation of the flow field of the centrifugal fan in the centrifugal fan is carried out by FLUENT software. Using an orthogonal experiment of L9（ 34）,which contains factors of impeller inlet diameter,impeller diameter,blade inlet angle,blade outlet angle,nine groups of schemes were designed. Four geometric parameters were used to analyze the influence on centrifugal fan performance by orthogonal experiments. Optimized design schemes were achieved,and we conclude that blade outlet angle is the main factor that affects the efficiency and noise. With the maximum efficiency of the fan as the first objective function,the minimum of the fan noise is second points,and the D1,D2,βb1,βb2and Z are used as the design variables. The genetic algorithm is used to optimize the noise and efficiency of the wind turbine. The optimum impeller structure parameters are obtained,and the efficiency of the optimized dust collector is higher than that of the original fan and the noise is effectively controlled.

关 键 词：离心风机 流场模拟 正交实验 结构优化 

分 类 号：TH16[机械工程—机械制造及自动化]