循环流化床锅炉风帽射流深度实验研究  

Experiment on penetration depth of noozle jets of circulating fluidized bed boiler

作　　者：肖卓楠[1] 赵增武[1] 武文斐[1] 李海广[1] 焦荣群[1] 

机构地区：[1]内蒙古科技大学能源与环境学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2010年第3期263-266,共4页Journal of Inner Mongolia University of Science and Technology

摘　　要：对包头第一电厂10#锅炉改造前后的两种风帽射流深度进行了理论分析和研究.根据动量定理和适当的物理简化,建立了风帽斜向下射流的物理模型,并推导出了关于射流深度的三次方程,因而可获得直接的理论解.根据密度相近的模化条件建立了射流运动的等效水模化试验台.最后,对改造前后两种风帽在循环流化床锅炉密相区的射流深度进行了对比.结果表明,实测的射流穿透深度和理论计算值吻合;采用侧箭头型风帽与7型风帽射流深度的变化不大,符合改造要求.The penetration depth of jets from noozles of two types used in 10# boiler of Baotou 1st power plant were theoretically calculated and experimentally investigated.Based on laws of momentum and by making some suitable simplifying assumptions,a physical model of the oblique jetting flow from a nozzle was established and a cubic equation was derived,with which the direct theoretical solutions were obtained.Based on the simulation condition of similar density,an equivalent hydraulic test rig for simulating the jet＇s flow motion was built.At last the penetration depth into the dense-phase zone of circulating fluidized bed boiler by two noozles of different type was compared.Research results indicate that the theoretically calculated penetrating depths agrees with the experimentally measured ones,and using the arrow-type noozle can reduce the noozle damage and the leakage java.

关 键 词：循环流化床锅炉 风帽 斜向下射流 射流深度 

分 类 号：TM621.2[电气工程—电力系统及自动化]