瓦斯-细水雾输送管道内喷嘴不同布置方式对压降的影响  

Influence of layout of nozzles in gas-mist transportation pipeline on pressure drop

作　　者：刘志超[1] 郝晶晶[1] 齐博[1] 

机构地区：[1]河南理工大学机械与动力工程学院,河南焦作454003

出　　处：《矿山机械》2012年第5期23-25,共3页Mining & Processing Equipment

基　　金：河南理工大学热能工程重点学科资助(509927);河南理工大学流体机械与工程河南省二级重点学科(507907);河南理工大学博士基金:管道输送瓦斯流场与细水雾场有效叠加的数值模拟研究(B2010-41)

摘　　要：低浓度瓦斯输送细水雾安全保护系统是一项新兴技术。喷嘴的不同布置方式会对低浓度瓦斯在管道输送过程中的压力降产生一定的影响。以气-液两相流动的均流模型为前提,根据稳定一维流动的基本方程建立水平圆管中气-液两相流动的压降计算关系式;通过数值模拟瓦斯-细水雾混合流体在水平管道中的流动,得出输送管道内喷嘴布置方式与压降的关系。其结果可为动力设备的选型以及安全经济运行提供必要的依据。The low density gas transportation pipeline equipped with water mist protection system is an emerging technology in recent years. Different layout of nozzles has certain influence on the pressure drop when low-density gas is transported in the pipeline. The uniform flow model of gas-liquid two-phase flow was taken as the basis, an equation of calculating pressure drop of gas-liquid two-phase flow in a horizontal pipe was derived from the primary equations of stable one-dimension flow. Through numerical simulation of flow of gas-water mist mixed fluid in horizontal pipe,the relationship between layout of nozzles and the pressure drop in transportation pipeline were obtained. The results could provide necessary basis for the selection of power equipment and safety and economic operation.

关 键 词：瓦斯 细水雾 水平管道 喷嘴 压力降 数值模拟 

分 类 号：TD712[矿业工程—矿井通风与安全]