流态变化对管道运行费用影响的理论分析  

Theoretical analysis on effects of flow state change upon pipeline operating cost

作　　者：李小月[1] 刘德俊[1] 高钊[1] 马焱[1] 王芙[1] 

机构地区：[1]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001

出　　处：《油气储运》2013年第9期954-957,共4页Oil & Gas Storage and Transportation

摘　　要：热油管道在运行过程中管内油温沿轴向逐渐降低,同时整条管道的运行工况随油流前行而不断变化,原油将从牛顿流体转变成非牛顿流体,不同流态下的管段摩阻损失不同,因而整条管道各段所需压头不同,应分段计算。以两泵站间无旁接输油管道的情况为例,计算求得不同进、出站油温对各流态管段长度、摩阻损失的影响,建立数学模型分析流态变化对输油管道系统运行费用的影响。对不同流态的输油方案进行比较,在确保完成输油任务的前提下,确定算例热油管道站间最佳输油方案。(表3,图4,参6)In the operation of a hot oil pipeline,internal oil temperature shows progressive axial decline,the operational working conditions of the whole pipeline vary continuously while oil flows advance forward,the crude turns from Newtonian fluid to non-Newtonian fluid,the pipe sections under different flow states have different friction loss,so the sections need different pressure heads,and the calculations shall be accomplished by section.Take the case of no bypass oil transmission pipelines between pump stations as an example,the effects of variable inlet/outlet oil temperatures upon the length and friction loss of the pipe sections under different flow states are determined by calculations,and the relevant mathematical model is constructed to analyze the effects of flow state change upon the operating cost of the oil pipeline system.The oil transportation programs directing at different flow states are analyzed comparatively,and the optimal oil transportation program between hot oil pipeline stations in the calculation cases is decided on the condition that smooth fulfillment of oil transportation tasks is ensured.

关 键 词：热油管道 流态 数学模型 运行费用 

分 类 号：TE832[石油与天然气工程—油气储运工程]