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(1.辽宁石油化工大学 储运与建筑工程学院，辽宁抚顺 113001；2.中国石油管道沈阳输油分公司，辽宁沈阳 113001；3.抚顺石化设计院，辽宁抚顺 110031)
摘要：针对热油管道的低输量问题，着重从管道的水力特性和热力特性2个方面进行分析，评述了温度和管道摩阻损失随距离和输量变化的情况，总结出管道低输量运行会带来凝管事故、翻越点增多、发生管道超压现象和费用增加等问题，并提出了降低低输量管道不稳定性的方法及具体措施，为保证管道的安全运行提供了参考。
关键词：管道；低输量运行；分析；水力特性；热力特性
Analysis of the Instability of Lowthroughput Running Oil Pipeline
DONG You-zhi1，WU Ming1，MIAO Juan1，WANG Kun1，ZHAO Ming-shi1，LIU Bao-ming2，WU Dong-xu3
(1.College of Storage & Architecture Engineering，Liaoning University of Petroleum & Chemical Technology，Fushun 113001 China；2.Shenyang Oil Branch of China Petroleum Pipeline Engineering Corporation，Shengyang 110031 China；3.Fushun Petrochemical Design Institute，Fushun 113001 China；)
Abstract：In view of the low-throughput problem concerning the hot oil pipeline，this paper emphatically carried on an analysis of two aspects：hydraulic characteristic and thermal energy characteristic，described the situation that the temperature and the pipeline frictional resistance were lost along with the change of the distance and the throughput，and，according to this，summarized such problems as that the pipeline lowthroughput movement can bring pipeline solidification，the increase of the surmounts spots，the phenomenon pipeline overpressure and the rise of expense.Then，in view of the above issues，it proposed concrete moethods and measure for reducing lowthroughput pipeline unstable characteristic，thus providing reference for guaranteeing the safe
operation of pipeline.
Key words：oil pipeline；low-throughput running；analysis；hydraulic characteristic；thermal energy characteristic | 