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| 管道油流携水系统的界面分布 |
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徐广丽1,2,张国忠1,BRAUNERN2,ULLMANNA2,刘刚1,张鑫1
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(1.中国石油大学 储运与建筑工程学院,山东 青岛 266555;2.特拉维夫大学 工程学院,以色列 特拉维夫 69978)
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| 摘要: |
| 成品油管道低洼处积水引起的腐蚀产物堵塞管道事故严重威胁管道的正常运行,为研究管道中油流携水作用机制,从试验、理论两个角度对油流携水系统的特性进行研究。以柴油和水为介质,在内径27 mm的水平-上倾管流试验系统上对上倾管段0.5 m位置处的出水量以及临界油相流量(出水量不为零时的最小油相流量)进行测量,同时根据试验模型,基于油水两相动量方程和光滑分层流稳定的条件,建立水相厚度梯度的计算模型,对水平测试段中相界面分布进行分析,对出水量以及临界油相流量进行预测。结果表明:新模型能很好地预测两参数的变化;在油流携水系统中,油相处于层流状态时,建立的水相厚度梯度模型能很好地预测相界面分布。 |
| 关键词: 两相流 界面分布 出水量 界面稳定性 水塞 管道腐蚀 |
| DOI：10.3969/j.issn.1673-5005.2011.01.025 |
| 分类号::TE 985.8 |
| 文献标识码:A |
| 基金项目:国家自然科学基金项目(50904077);中国石油大学(华东)研究生创新基金项目(BZ10-11) |
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| Interface profile in oildraggingwater pipeline system |
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XU Guangli1,2, ZHANG Guozhong1, BRAUNER N2, ULLMANN A2, LIU Gang1, ZHANG Xin1
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(1.College of Storage ＆ Transportation and Architectural Engineering in China University of Petroleum, Qingdao 266555, China;2.School of Mechanical Engineering, Tel Aviv University, Tel Aviv 69978, Israel)
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| Abstract: |
| The pipeline corrosion products due to water accumulation at low elevation spots blocking pipeline is a serious threat to the normal operation of the pipeline. The characteristics of oildraggingwater pipeline system were studied experimentally and theoretically to analyze the mechanism of water withdrawn by oil flow. Labscale experiments were conducted on the test loop with inner diameter of 27 mm to measure water displacement and the critical oil flow rate required for the onset of water displacement by diesel flow from a lower horizontal test section into an upward inclined test section. In addition, a model for predicting the oilwater interface profile, which is based on combining momentum equations of two phases with the neutral stability condition of stratified flow, was received. The predicted amount of water withdrawn by diesel flow and the critical oil flow rate were favorably compared with the experimental measurements. The results indicate that the new model can predict the changes in two parameters. The water height gradient model can predict the distribution of the phase interface in oildraggingwater pipeline system with oil flow in laminar. |
| Key words: two phase flow interface profile water displacement stability of oilwater interface water plug pipeline corrosion |
