LPG站集合管内空化现象分析  

Analyse of Civatation Phenomenon in the Concentrated Pipe of LPG Station

作　　者：乔伟彪 马贵阳[2] 

机构地区：[1]中机国际工程设计研究院有限公司华东分院,江苏南京210042 [2]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001

出　　处：《节能技术》2012年第5期418-421,共4页Energy Conservation Technology

基　　金：辽宁省自然基金项目(20082186)

摘　　要：液化石油气(LPG)从集合管流入各个支管时由于局部压力的变化会产生空化现象,生成大量气泡。当气泡溃灭时将引发强烈的冲击波和高速微射流,形成气蚀极易对管线造成损害。针对液化石油气通过各个支管空化的影响因素进行数值计算,结果表明:入口压力越高,空化数越小,气含率越高,湍动能越大。当改变出口压力时发现,出口压力越高,空化数越大,气含率越低,湍动能就越小。随着管径的增大,空化强度越高,空化数越小,气含率越高,湍动能越大。When the LPG get through the bent pipe,because of the pressure trasformation,it produce a large number of bubbles.It generates the local high temperature and high pressure,which form the erosion and harm the pipe.When the LPG get through the bent pipe,we compute the influencing factor of the cavitation.Research shows：under the invariant of the other condition,the higher the inlet-pressure,the smaller the ratio of the cavitation,the higher the ratio of the including gas;under the invariant of the other condition,the higher the outlet-pressure,the bigger the ratio of the cavitation,the lower the turbulent flow kinetic energy;under the invariant of the other condition,the bigger the pipe diameter,the higher the cavitation intensity,the smaller the cavitation number,the higher the ratio of the including gas,the higher the turbulent flow kinetic energy.

关 键 词：LPG 空化 空化数 数值模拟 

分 类 号：TE832.1[石油与天然气工程—油气储运工程]