火电机组烟道典型管件降阻的数值模拟优化研究与应用  

Numerical Modelling Optimization and Application of Resistance Reduction of Typical Flue Duct Structures of Coal-fired Utility Boilers

作　　者：徐鹏 李文成 陈冬林[2] 刘星辰 曹文广 XU Peng;LI Wen-cheng;CHEN Dong-lin(Jiangxi Ganneng Co.,Ltd.;Changsha University of Science and Technology)

机构地区：[1]江西赣能股份有限公司,江西南昌330029 [2]长沙理工大学

出　　处：《电站系统工程》2022年第4期11-14,共4页Power System Engineering

基　　金：湖南省教育厅科学研究项目(18C0202);长沙理工大学青年成长计划项目(2019QJCZ045)资助。

摘　　要：为解决燃煤火力发电机组烟道局部阻力大的问题,对烟道局部阻力管件结构型式及特点进行了归纳与分析,拟定了各结构管件基于导流板的降阻方案,并基于FLUENT对各烟道结构管件内的流动及阻力特性进行了数值模拟研究,确定了各结构管件最佳导流板降阻方案,并应用于660 MW燃煤机组烟道降阻改造,使单台引风机电流值下降72 A,为火电机组烟风道降阻优化设计与节能改造提供了理论依据与借鉴。In order to solve the problem of large local resistance in the flue of coal-fired thermal power generating units,the structural types and characteristics of the local resistance pipe fittings of the flue were summarized and analyzed, and the resistance reduction scheme of each structural pipe fitting based on the deflector was drawn up, and based on FLUENT numerical simulation research was carried out on the flow and resistance characteristics in the pipe fittings of each flue structure, and the optimal flow guide plate resistance reduction scheme of each structure pipe fitting was determined, and it was applied to the flue resistance reduction transformation of a 660MW coal-fired unit to make a single induced draft fan. The current value is reduced by 72A, which provides a theoretical basis and reference for the optimized design and energy-saving transformation of the flue ducts of thermal power plants.

关 键 词：火电机组 烟道降阻 数值模拟 优化 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]