含气塞管路扫水过程的水力学分析  

Hydraulics Analysis of Pigging for Gas Pipeline with Air-lock

作　　者：赵广慧[1] 赵洪瑞[1] 魏秦文[2,3] 王玮[2,3] 梁政[1] 

机构地区：[1]西南石油大学机电工程学院,四川成都610500 [2]中国石油天然气管道科学研究院,河北廊坊065000 [3]油气管道输送安全国家工程实验室,河北廊坊065000

出　　处：《管道技术与设备》2013年第6期42-44,54,共4页Pipeline Technique and Equipment

基　　金：国家自然科学基金项目(11102173);省部共建"石油天然气装备"教育部重点实验室资助项目(2006STS04)

摘　　要：在新建长输天然气管道水压试验后的通球扫线过程中,由于地形变化剧烈、泄漏等原因,使得清管器下游的水流中包含气塞。为了评估气塞对扫水过程的影响,耦合考虑了清管器、气塞段和液塞段的运动,建立通球扫水过程的力学模型,研究扫水过程中气塞的状态及其对清管器运行速度的影响。结果表明:清管器运行速度的变化主要与管线的高程相关,气塞的长度在高程剧烈变化区段产生很大的变化,对清管器的运行产生冲击,气塞的存在是扫水过程不稳定的重要原因。After the water pressure testing of long-distance gas pipelines,due to the dramatic change of the terrain and the leakage and other reasons,the downstream water is made to contain gas slug segments. To study the parameters impact by the air lock segment in the cleaning,in the process of coupling,consideration is given to the gas slug segment and the movement of the liquid slug segment. The mechanics model of cleaning is built. The results show that the pipeline elevation affects the pig running speed,and the gas slug segment accelerates the pigging speed in the lower areas and slows down at the top of the slop and there is a big change of the pressure of the gas slug segment when the elevation changes.

关 键 词：长输天然气管道 清管器 扫水 气塞段 水力学分析 

分 类 号：TE8[石油与天然气工程—油气储运工程]