四川输气南干线管网最优运行方式的确定

针对四川输气南干线两佛复线投产后输量增加所产生的一系列问题,分析了重庆总厂至纳溪段的管网组成和用户用气的特点.根据分析结果和运行方式的比较,对各管段不同工况下的运行方式进行了比选,确定了最优运行方式.最优运行方式可以最大限度地利用现有天然气储运设施的能力,提高管输效率并能有效地缓解管网运行中的矛盾,对即将建设的北二环管网的运行也具有借鉴意义.

The Determination on Optimized Running Mode of Southern Sichuan Gas Transmission Pipeline Network

In allusion to the fast growing of gas throughput at the commissioning condition of Liangfo Parallel Gas Pipeline (167 km in total length),the branch line of Southern Sichuan Gas Transmission Pipeline,the constitution of Chongqing-Naxi pipeline section (consisted of Woliang Pipeline, Shidu Pipeline, Duliang Pipeline, Liangfo Pipeline, 720mm in diameter, Liangfo Parallel Pipeline, 711mm in diameter, Fona Pipeline and Fona Parallel Pipeline) and the characteristics of gas supply from this pipeline section are analyzed in this paper. On the basis of analytical conclusions and comparison of pipeline running modes, the running mode of these pipeline sections at different operating conditions are compared and selected to determine the optimized running mode. The comparison and selection results show that the optimized running mode of the pipeline network mentioned above can utility the capacity of current gas storage and transmission facilities to a great extent, increase the pipeline productivity and effectively solve the contradiction of the pipeline network among the different running modes, in addition, the optimized running mode of the pipeline network can provide a reference base to the northern Erhuan Pipeline Network under construction in running mode.