摘要
在长距离气液管道清管过程中,磨损可能导致清管器密封盘直径小于管道内径。为了研究不同直径清管器的清管特点,使用2个不同直径的直板清管器,在透明有机玻璃管实验环路中进行空气-水两相流管道清管模拟实验。结果表明:当清管器直径大于管道内径时,管内介质流动可以分为4个区,清管器运动速度不断波动,平均速度与气液混合速度接近。当清管器直径小于管道内径时,清管器前后均为气液两相,清管器运动受液相影响较大,平均速度波动大且小于气液混合速度。检测并计算了清管液塞头的速度与清管液塞的长度,计算值与检测结果吻合较好。
In the pigging process of long-distance gas-liquid pipelines, seal disc diameter of pig may be less than the internal diameter of the pipeline due to abrasion. To research pigging process characteristics of pigs with different pigging diameters, 2 straight pigs with different diameters are used to conduct the air-water two-phase flow pipeline pigging simulation experiment in the transparent plexiglass tube experiment loop. The results show that medium flow in the pipeline could be divided into 4 zones, pig speed continuously changes and average speed is closed to the gas-liquid mixing speed when the pig diameter is greater than the internal diameter of the pipeline. When the pig diameter is less than the internal diameter of the pipeline, and gas-liquid two-phase media are in the upstream and downstream of the pig, pig movement suffers from a larger impact from the liquid phase media and the average speed fluctuates greatly and is lower than the gas-liquid mixing speed. The speeds and lengths of pigging liquid plugs are detected and calculated, showing the better consistency between the calculated values and detected results. （1 Table, 12 Figures, 11 References）
出处
《油气储运》
CAS
2013年第1期36-42,共7页
Oil & Gas Storage and Transportation
基金
大型油气田及煤层气开发国家科技重大专项"煤层气田技术系统优化技术"
2011ZX05039-002
"十二五"国家科技重大专项课题子课题"深水流动安全设计与流动管理技术"
2011ZX05026-004-003
国家自然科学基金资助项目"深水环境下易凝高粘原油-天然气输送系统流动保障基础问题研究"
51104167
关键词
多相流管道
清管
气液两相流
清管器过盈量
模拟实验
multiphase flow pipeline, pigging, gas-liquid two-phase flow, pig magnitude of interference, simulationexperiment
