热油管道防腐层大修期间热力参数的数值模拟  

Numerical simulation of thermal parameter of hot oil pipeline during coating overhauling period

作　　者：李伟[1] 宇波[1] 张劲军[1] 张争伟[1] 黄金萍 

机构地区：[1]中国石油大学城市油气输配技术北京市重点实验室,北京102249 [2]中油管道分公司沈阳调度中心,辽宁沈阳110031

出　　处：《中国石油大学学报（自然科学版）》2009年第1期103-108,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：中国石油天然气股份有限公司项目(2005-3220)

摘　　要：基于对防腐层大修期间施工进度与输油工况的合理简化,建立有开挖段站间热油管道正常运行的数学模型,并采用有限容积法对该模型进行数值离散;通过对该模型的数值求解,模拟防腐层大修期间不同环境条件、不同运行参数和开挖回填不同阶段管道沿线原油和土壤温度变化;再根据温度模拟结果,确定大修期间开挖站间的最大允许开挖长度。利用所编计算程序对2006年铁秦输油管道葫芦岛—绥中站间防腐层大修期间运行工况的模拟结果显示,进站油温平均计算偏差低于1.0℃。若考虑防腐层大修期间管沟积水的影响,铁秦输油管道葫芦岛—绥中站间7月份最大开挖长度不超过1.0 km;若不考虑则该站间7月份最大开挖长度不能超过6.0 km。By simplifying the project schedule and operation condition of the hot oil pipehne during the period of the coating overhauling, a mathematical model of hot oil pipeline for the station space including exposed section was developed. The finite volume method was used in the discretization of the model. In this way, the oil and soil temperature changes along the pipeline during the coating overhauling period in different ambient temperature, operation parameter and different stage can be simulated. And the maximum permitted dig section length of a station space can be determined by the calculated result. Using the program, the operation condition of Huludao-Suizhong station space of Tieqin oil pipeline during the coating overhauling period in year 2006 was simulated. The results demonstrate that the average calculation error of inlet temperature is below 1.0 ℃. Considering the dig section＇s soak by the rainwater or not considering, the maximum permitted dig section length is not exceeding 1.0 km and 6.0 km in July respectively.

关 键 词：热油管道 防腐层大修 开挖回填 有限容积法 数值模拟 

分 类 号：TE988[石油与天然气工程—石油机械设备]