埋地输油管道泄漏油品扩散模拟  

Diffusion simulation on leaked oil for buried pipelines

作　　者：李朝阳[1] 马贵阳[1] 刘亮[1] 

机构地区：[1]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001

出　　处：《油气储运》2011年第9期674-676,633,共3页Oil & Gas Storage and Transportation

基　　金：辽宁省教育厅基金资助项目"运行条件对冻土区埋地管道周围土壤冻结深度的影响研究";L2010245

摘　　要：建立了埋地输油管道二维泄漏渗流物理模型和数学模型,采用CFD仿真软件对管道在不同位置发生泄漏时油品的扩散情况进行模拟。结果表明:泄漏初期,管道不同位置发生泄漏,油品在土壤中的渗流面均比较规则;一段时间后,对于管道正上方发生泄漏的情况,油品在土壤中的渗流面近圆形,对于管道正下方和侧面泄漏两种情况,渗流面呈发散状;相对于其他两个泄漏位置,管道正上方发生泄漏,油品在土壤中的渗流范围更广,但3种情况在地面的溢流长度基本相等。该研究结果可为电缆检漏技术用于检测、定位埋地输油管道的泄漏情况和泄漏位置提供理论依据。Two-dimensional seepage physical and mathematical models for buried pipelines were established by dispersion simulation on the oil leakage of pipeline in different locations using CFD simulation software. The result showed that oil seepage surface in soil was inerratic for all leakage locations at initial period. Some time after leakage,the f igure of oil seepage surface in oil surface became circular for the leakage at the top of pipeline,while the seepage boundary was a radiating shape for the leakage at the bottom or side of pipeline. Although the oil seepage boundary in soil was wider for the leakage at the top of pipeline than the leakage at two other positions,the overflow lengths in the ground surface for the three cases were almost the same. This result can provide a theoretical basis in using cable leakage detection technology for detecting leakage situation and leakage position.

关 键 词：埋地管道 输油管道 泄漏 扩散 模拟 

分 类 号：TP319[自动化与计算机技术—计算机软件与理论]