水平管油气两相段塞流及其传热特性

doi:10.11949/j.issn.0438-1157.20161556

化工学报 ›› 2017, Vol. 68 ›› Issue (6): 2306-2314.DOI: 10.11949/j.issn.0438-1157.20161556

水平管油气两相段塞流及其传热特性

王鑫, 王兆婷, 张晓凌, 何利民

中国石油大学(华东)储运系, 山东省油气储运安全省级重点实验室, 山东青岛 266580

收稿日期:2016-11-03 修回日期:2017-03-03 出版日期:2017-06-05 发布日期:2017-06-05
通讯作者: 王鑫
基金资助:
国家自然科学基金项目（51376197）

Heat transfer of oil-gas slug flow in horizontal pipe

WANG Xin, WANG Zhaoting, ZHANG Xiaoling, HE Limin

College of Pipeline and Civil Engineering, Shandong Provincial Key laboratory of Oil & Gas Storage and Transportation Safety, China University of Petroleum, Qingdao 266580, Shandong, China

Received:2016-11-03 Revised:2017-03-03 Online:2017-06-05 Published:2017-06-05
Contact: 10.11949/j.issn.0438-1157.20161556
Supported by:
supported by the National Natural Science Foundation of China (51376197)

摘要/Abstract

摘要：

海底油气管道的冷却传热过程是结蜡、水合物等海洋石油工业流动保障问题的关键控制因素。采用电容探针与热电偶、热电阻等流动及温度测量手段对不同冷却条件下空气-油段塞流的流动参数和传热参数进行实验测量，分析了空气-油段塞流流动参数对传热特性的影响，并与空气-水对流换热进行对比。结果表明，空气-油段塞流对流传热系数主要受液相折算速度的影响，且冷却液温度越低，管底热流体黏度越大，导致热边界层越厚，传热系数降低；受黏性力及边界层影响，对流传热系数远小于空气-水；沿管壁周向，从管顶到管底的对流传热系数不断增大。提出了适用于冷却条件下的油气段塞流传热关联式和传热模型。

关键词: 气液两相流, 传热, 多相流, 冷却条件, 段塞流

Abstract:

The heat transfer in the cooling process of subsea oil and gas pipeline is a key factor of the flow assurance in offshore petroleum industry, such as wax, hydrate etc. In this study, capacitance probe, thermocouple and resistance thermometer were used to measure the flow and heat transfer characteristics of oil-gas slug flow in different cooling conditions and the effect of flow parameters on heat transfer of slug flow was analyzed. It was demonstrated that the convective heat transfer coefficient of oil-gas slug flow is mainly affected by the liquid superficial velocity. While the temperature of the outer cooling fluid is decreased, the viscosity of the inner thermal fluid at the bottom of the tube will increase and the thickness of the thermal boundary layer will be increased, therefore the heat transfer will be deteriorated. Also the convective heat transfer coefficient of oil-gas is much lower than that of water-gas due to the different viscous force and boundary layer. The local convective heat transfer coefficient is increasing from the top to the bottom of the tube along the circumferential direction. Moreover, the correlation and heat transfer model of oil-gas slug flow under cooling condition were presented.

Key words: gas-liquid flow, heat transfer, multiphase flow, cooling condition, slug flow

中图分类号:

O359

王鑫, 王兆婷, 张晓凌, 何利民. 水平管油气两相段塞流及其传热特性[J]. 化工学报, 2017, 68(6): 2306-2314.

WANG Xin, WANG Zhaoting, ZHANG Xiaoling, HE Limin. Heat transfer of oil-gas slug flow in horizontal pipe[J]. CIESC Journal, 2017, 68(6): 2306-2314.

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水平管油气两相段塞流及其传热特性

Heat transfer of oil-gas slug flow in horizontal pipe

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