铁大线与新大线水力联运的若干问题

Challenges in hydrodynamic combination operation of Tieling-Dalian Crude Oil Pipeline and Xingang-Dalian Crude Oil Pipeline

新大一、二线相继投产后,经过几次技术改造,与铁大线形成了统一的水力系统,运行规律较以往各管道独立运行时更加复杂。基于现场实践,探讨了新大二线分输俄油至新港库区时避免不满流运行,新大二线分输俄油至西太平洋炼厂的运行规律,大连石化末站倒罐对新大一线出站压力的影响,并对新大一线"6.30事件"的压力数据进行分析,逐渐掌握了在统一水力系统下的运行规律和现场操作技巧,对于保证3条管道安全输油,并更好地管理和运行该水力系统具有重要的指导意义。

Upon commissioning, the 1st and 2nd Xingang-Dalian Crude Oil Pipelines have experienced several rounds of technical reconstructions and formed a unified hydrodynamic system with the Tieling-Dalian Crude Oil Pipeline, with operations much more complicated than independent operation of individual pipelines. With consideration to field applications, the paper reviews operations without slack flow during transportation of Russian Oil to Xingang Tankfarm through the 2nd Xingang-Dalian Crude Oil Pipeline, rules in operations of the 2nd Xingang-Dalian Crude Oil Pipeline to transport Russian Oil to the West Pacific Refinery and impacts of tank change-over operations in Dalian Petrochemical Terminal Station to export pressures of the 1st Xingang-Dalian Crude Oil Pipeline. In addition, pressure data of the 1st Xingang-Dalian Crude Oil Pipeline in ＂6.30 Accident＂ are analyzed to determine operation rules and on-site operation techniques by using uniformed hydrodynamic system. The research results can provide necessary guidance for safe operation of the 3 pipelines and better management and operation of the hydrodynamic system.