两相闭式热虹吸管在寒区埋地输油管道安装方式及降温效果研究  

Study on Installation Method and Cooling Effect of Two-Phase Closed Thermosyphon in Cold Area Buried Oil Pipelines

作　　者：隗伟 杨峻[1] 

机构地区：[1]南京工业大学机械与动力工程学院,江苏南京211816

出　　处：《当代化工》2017年第11期2346-2349,共4页Contemporary Chemical Industry

摘　　要：考虑全球变暖因素,建立热虹吸管(热管),输油管道和多年冻土的传热耦合模型。基于此模型采用中俄输油管道作为研究对象,研究多种热管安装方式的降温效果,分析最佳安装方式的温度场规律。结果说明:热管降温效果显著,且双侧90°安装的效果最佳。另外,热管在埋入前两年内,15 m以下土壤地温为-1.5℃(初始值地温),而在热管埋入的第3年起,冷量的积累开始影响深层土壤,在第30年的到达最大储冷量,地温开始回升,在第50年时深处地温升至正温0.83℃。Considering the global warming factors, a coupling model was established among heat pipe, oil pipeline and permafrost. Taking China-Russia oil pipeline as the research object, the cooling effect of thermosyphon installed by different ways was studied by the model. At the same time, the temperature field of thermosyphon installed by the best way was analyzed. The results showed that the cooling effect of thermosyphon was significant, and the effect of 90° bilateral installation way was the best. In addition, the low gravity heat pipe was buried in the last two years, the soil temperature was-1.5 ℃（initial temperature）under 15 m. When the low gravity heat pipe was buried in the third year, the cold accumulation began to affect the deep soil. The cold storage can reach the maximum in the thirty year. In the fiftieth year, the deep temperature can rise to positive temperature of 0.83 ℃.

关 键 词：热管 多年冻土 中俄输油管道 

分 类 号：TE832[石油与天然气工程—油气储运工程]