某DN 1500烟气挡板流量特性的数值模拟  

Numerical Simulation of Flow Characteristics of a DN 1500 Flue Gas Damper

作　　者：王战锋 樊桦 WANG Zhanfeng;FAN Hua(Shaanxi Shangluo Power Generation Co., Ltd., Shangluo 726000, Shaanxi China;Department of Energy and Power Engineering, Xi’an Jiaotong University,Xi’an 710049, China)

机构地区：[1]陕西商洛发电有限公司,陕西商洛726000 [2]西安交通大学能源与动力工程学院,陕西西安710049

出　　处：《吉首大学学报（自然科学版）》2021年第5期44-49,共6页Journal of Jishou University(Natural Sciences Edition)

基　　金：国家重点研发计划重点专项项目(2016YFB0601403)。

摘　　要：利用Fluent数值模拟软件计算了某DN 1500烟气挡板压降为100,300,500,700,1000 Pa,挡板开度为10°,20°,30°,40°,50°,60°,70°,80°,90°时对应的烟气质量流量,以及挡板压降为1000 Pa,挡板开度为10°,30°,50°,70°,90°时对应的烟气速度矢量,并拟合了挡板压降为100 Pa时的流量特性分段函数.研究结果表明,要保证挡板全开时压降小于100 Pa,全开时的烟气质量流量就不能超过25.05 kg/s;考虑到流场不均匀导致的挡板局部磨损,应当尽量避免挡板在小开度下长时间工作;运行过程中烟气挡板宜在23°~81°之间调节烟气质量流量.Fluent was used to simulate the flow characteristics of a DN 1500 flue gas damper.Flue gas mass flows and velocity vector were obtained when the damper pressure drop were 100,300,500,700,1000 Pa respectively and the damper opening were 10°,20°,30°,40°,50°,60°,70°,80°,90°respectively.The influence of pressure drop on flue gas mass flow and flow field were analyzed.Moreover,the piecewise function of flow characteristics corresponding to damper pressure drop of 100 Pa was fitted.The results showed that to have pressure drop less than 100 Pa,the flue gas mass flow with full opening of damper should not exceed 25.05 kg/s.With possible wear,damper should not be operated in narrow angle for long time.It is appropriate to operate the damper in 23°~81°to control the flue gas mass flow.

关 键 词：烟气挡板 流量特性 数值模拟 烟气质量流量 速度矢量 

分 类 号：TM621.2[电气工程—电力系统及自动化]