辽宁石油化工大学学报
遼寧石油化工大學學報
료녕석유화공대학학보
JOURNAL OF LIAONING UNIVERSITY OF PETROLEUM & CHEMICAL TECHNOLOGY
2013年
4期
37-40
,共4页
杨明悦%吴明%赵玲%程猛猛%牛辰瑞%张欣%赵振智
楊明悅%吳明%趙玲%程猛猛%牛辰瑞%張訢%趙振智
양명열%오명%조령%정맹맹%우신서%장흔%조진지
顺序输送%翻越点%变径管%数值模拟%混油
順序輸送%翻越點%變徑管%數值模擬%混油
순서수송%번월점%변경관%수치모의%혼유
Batch transportation%Crossing point%Reducer pipe%Numerical simulation%Mixed-oil
针对成品油管道沿线落差较大且出现翻越点时,管路变径对成品油顺序输送混油比例产生影响的问题,应用C FD软件多相流模型,以汽油和柴油作为交替输送对象,建立顺序输送混油控制方程,分别对变径位置在弯管前和弯管后两种情况进行数值计算,得到了混油量分布云图,分析了不同输送顺序对混油体积分数的影响。结果表明,弯管前变径时,后行柴油和后行汽油的混油段长度大致相等,后行柴油楔入到前行汽油中的量较多;弯管后变径时,后行柴油的混油段较长,沿轴向各截面的平均体积分数不均匀。因此,成品油管道通过翻越点时,选取变径位置在弯管前,并多采用前行柴油后行汽油的输送方式有助于减少混油量。
針對成品油管道沿線落差較大且齣現翻越點時,管路變徑對成品油順序輸送混油比例產生影響的問題,應用C FD軟件多相流模型,以汽油和柴油作為交替輸送對象,建立順序輸送混油控製方程,分彆對變徑位置在彎管前和彎管後兩種情況進行數值計算,得到瞭混油量分佈雲圖,分析瞭不同輸送順序對混油體積分數的影響。結果錶明,彎管前變徑時,後行柴油和後行汽油的混油段長度大緻相等,後行柴油楔入到前行汽油中的量較多;彎管後變徑時,後行柴油的混油段較長,沿軸嚮各截麵的平均體積分數不均勻。因此,成品油管道通過翻越點時,選取變徑位置在彎管前,併多採用前行柴油後行汽油的輸送方式有助于減少混油量。
침대성품유관도연선락차교대차출현번월점시,관로변경대성품유순서수송혼유비례산생영향적문제,응용C FD연건다상류모형,이기유화시유작위교체수송대상,건립순서수송혼유공제방정,분별대변경위치재만관전화만관후량충정황진행수치계산,득도료혼유량분포운도,분석료불동수송순서대혼유체적분수적영향。결과표명,만관전변경시,후행시유화후행기유적혼유단장도대치상등,후행시유설입도전행기유중적량교다;만관후변경시,후행시유적혼유단교장,연축향각절면적평균체적분수불균균。인차,성품유관도통과번월점시,선취변경위치재만관전,병다채용전행시유후행기유적수송방식유조우감소혼유량。
To study the impact of reducer pipeline on batch transportation of mixed product oil when there was a large drop at a crossing point ,CFD multiphase flow model was used and transportation control equation was established based on petrol-diesel oil mixture .Simulation about mixed volume of reducer pipeline placed in front of or behind the elbow was calculated and presented with pictures .The analysis show that when reducer pipeline placed in front of the elbow ,the length of mixed oil was fairly equal and more diesel oil would mix into petrol under the petrol first order .While reducer pipeline placed behind the elbow ,the length of mixed oil was longer and the average volume fractions of crossing sections along every axial were unevenly distributed under the petrol first order .Therefore for the reducing of mixed volume ,it was appropriate for placing reducer pipeline in front of the elbow and taking the diesel oil first order when batch transportation pipeline was passing through the crossing point .