火电厂烟风通道主要异形件优化研究  

Optimization on Main Types of Major Irregular Parts for Air & Flue Gas Ducts in Thermal Power Plant

作　　者：赵全斌[1] 薛朝囡 刘明[1] 李卫东[2] 严俊杰[1] 种道彤[1] 王进仕[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,西安710049 [2]华能国际电力股份有限公司,北京100031

出　　处：《工程热物理学报》2015年第4期780-784,共5页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.U1261201);国家科技支撑计划项目(No.2011BAA04B03)

摘　　要：火电厂烟风通道的优化设计不完善,导致烟风煤粉系统普遍存在阻力偏大、能耗偏高等问题。烟风管道阻力主要产生于扩散管、缓转弯头以及矩形切角弯头等异形件,本文采用标准k-ε模型,利用Fluent求解器对这些异形件的流场进行了三维数值计算,得到了不同结构形式异形件的流动及阻力特性,获得了异形件优化结构及阻力范围,为烟风通道的优化设计提供了依据。The air & flue gas ducts are poorly designed for most thermal power plants.As a result,the drag of air & flue gas ducts is larger than expected value which leads to the high energy dissipation for thermal power plant.The drag of air & flue gas ducts is mainly produced in irregular parts such as diffusion pipe,elbow pipe and cutting angle elbow.The numerical simulation of flow field in the ducts was carried out with standard k-ε model using Fluent as the solver in this paper.At last,some flow and drag characteristic of irregular parts with different structures are clear.Also some reasonable and optimizing structure parameters and forms are presented which provide some help for the optimization designing of air & flue gas ducts.

关 键 词：烟风通道 异形件 阻力特性 优化 

分 类 号：TM621.73[电气工程—电力系统及自动化]