埋地热油管道开挖修复停输再启动过程热力模拟  

The Thermal Simulation of Restoration Segment of Buried Hot Oil Pipeline during the Periods of Shut Down and Restart

作　　者：康凯[1,2] 刘扬[1] 刘晓燕[1] 徐颖[1] 

机构地区：[1]大庆石油学院土木建筑工程学院,大庆163318 [2]大庆油田矿区服务事业部管理二公司,大庆163416

出　　处：《科学技术与工程》2010年第8期1853-1857,共5页Science Technology and Engineering

基　　金：黑龙江省科技攻关项目(GZ07A302)资助

摘　　要：东部管网已运行30多年,使用寿命已超过设计寿命,多处出现防腐层破坏及漏油事故,急需进行停输开挖维修。热油管道开挖段停输维修时,由于开挖段的裸管与大气直接接触,向外散热量增大,温度骤降,油品黏度发生变化,影响再启动。对于整条埋地管道,温度变化幅度最大的管段为开挖段。在热油管道稳态运行的研究基础上,首次给出停输及再启动时开挖维修段内油品温度的非稳态计算模型,模拟计算出停输及再启动过程中开挖段内的油品温度变化曲线,并分析出不同的维修参数下,开挖停输段内油品温度的变化规律。The hot signing life. Corrosion oil pipeline of northeast has been worked for 30 years, and it＇s using life has exceed the deprotective covering breakage and oil scattering are very common, so it urgent paired in shut down. When hot oil pipeline is repaired in the state of shut down, the bared pipe of needs to be reexcavation segment directly contact with air, heat loss and temperature drop are great, which affect the changing of oil viscosity and restart. For the whole buried oil pipeline, the segment of maximal temperature range is the excavation segment. Now the researches about temperature drop in shut down all focus on the temperature variation of the whole buried curve of temperature variation, at last analyzed the alternation regularity of oil temperature in excavation segment during the period of shut down with different repair parameters.

关 键 词：停输 再启动 开挖段 温度 非稳态 

分 类 号：TE832.3[石油与天然气工程—油气储运工程]