超临界机组锅炉管内壁清洁程度与流动压降的关系分析  

Analysis on Relationship between the Flowing Pressure Drop and Cleanness of Tube Inner Surface in Supercritical Pressure Boiler

作　　者：徐洪[1] 

机构地区：[1]江苏方天电力技术有限公司,江苏南京211102

出　　处：《江苏电机工程》2010年第5期61-63,共3页Jiangsu Electrical Engineering

摘　　要：利用流体力学定常流动动量方程分析了流动压降与管内粗糙度的关系,并在此基础上利用某超临界机组现场运行数据和检修收集的管内氧化膜量等数据,总结了该机组炉管压降与省煤器入口氧化物沉积量的数量关系,可用于近似评估运行过程中氧化物的沉积量。该方法对实现在线评估管内清洁度有一定指导意义。The relationship between the cleanness of tube inner surfaces and the flowing pressure drop is analyzed in the paper using the momentum equations for steady flow.With the actual data of oxide scale obtained during the period of maintenance and normal operation,the quantitative relationship between the pressure drop and the weight of oxide scales at the entrance of the economizer is proposed in the paper to provide measures for the assessment of oxide scales.The method can provide reference for the assessment of the cleanness of inner surfaces.

关 键 词：超临界 直流机组 锅炉压降 沉积物量 

分 类 号：TK222[动力工程及工程热物理—动力机械及工程]