|本期目录/Table of Contents|

[1]唐绍猛,刘德俊,王光辉.油水两相流弯管处安全分析[J].中国安全生产科学技术,2016,12(10):96-101.[doi:10.11731/j.issn.1673-193x.2016.10.016]
　TANG Shaomeng,LIU Dejun,WANG Guanghui.Safety analysis on oil-water two-phase flow in curved pipe[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(10):96-101.[doi:10.11731/j.issn.1673-193x.2016.10.016]
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油水两相流弯管处安全分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
12
期数:
2016年10期
页码:
96-101
栏目:
现代职业安全卫生管理与技术
出版日期:
2016-10-30

文章信息/Info

Title:
Safety analysis on oil-water two-phase flow in curved pipe
作者:
唐绍猛1; 刘德俊1; 王光辉2
(1.辽宁石油化工大学 石油天然气工程学院,辽宁 抚顺 113001； 2.中石化天然气榆济管道分公公司，山东 济南 250000)
Author(s):
TANG Shaomeng1;  LIU Dejun1;  WANG Guanghui2
1. College of Oil and Natural Gas Engineering, Liaoning Shihua University, Fushun Liaoning 113001, China; 2. SINOPEC Yulin to Jinan Natural Gas Pipeline Corporation, Jinan Shandong 250000, China
关键词:
两相流; 安全; 弯管; 含水率; 空化腐蚀
Keywords:
two-phase flow;  safety;  curved pipe;  water cut;  cavitation corrosion
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2016.10.016
文献标志码:
A
摘要:
针对油水两相流经过弯管时的流向改变会导致流体速度和压力发生突变，造成发生静电事故和腐蚀事故风险上升 的不利影响，提出了RSM模型和Mixture模型相结合的安全分析方法。该方法对不同入口速度和含水率的油水两相流进行 数值模拟，并用Origin软件拟合了进口最大允许流速与管径及含水率的经验关系。结果表明，在含水率和入口速度一定 时，随着管径的增加，弯管处的最大速度呈现逐渐减小的趋势：当管径和入口速度一定时，随着含水率的增加，弯管处 的最大速度也逐渐减小。最大压力出现在弯管外拱壁处，最小压力出现在弯管内侧拱壁处。在实际生产中，增加弯管下 游直管段内侧壁的壁厚，可有效防止空化腐蚀所造成的危害；通过含水率来确定安全流速，可有效降低静电事故的风险 。
Abstract:
The flow direction change of oil-water two-phase flow passing through the curved pipe will cause the sudden change of fluid velocity and pressure, which leads to the rise of risk about electrostatic accident and corrosion accident. The method combining RSM model with Mixture model was proposed. The numerical simulation of oil-water two-phase flow with different inlet velocity and water cut was carried out, and the empirical relationship among maximum allowable inlet flow velocity, pipe diameter and water cut was fitted by using Origin software. The results showed that when the water cut and inlet velocity are constant, the maximum velocity in the curved pipe gradually decreases with the increase of pipe diameter. When the pipe diameter and inlet velocity are constant, the maximum velocity in the curved pipe decreases gradually with the increase of water cut also. The maximum pressure occurs at the external arch wall of curved pipe, and the minimum pressure occurs at the internal arch wall of curved pipe. In practical production, increasing the wall thickness of internal wall in the straight pipe at the downstream of curved pipe can effectively prevent the hazard caused by cavitation corrosion. The safety flow velocity can be determined by water cut, which can effectively reduce the risk of electrostatic accidents.

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备注/Memo

备注/Memo:
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更新日期/Last Update: 2016-11-30