中亚天然气C线管道SPS仿真模拟

Simulation on Line C of the China–Central Asia Gas Pipeline based on SPS software

中亚天然气C线管道属于典型的输送压力高、流量大、管道跨度大、压气站数目多、输送工艺复杂的输气管道。为研究中亚天然气C线管道正常工况和事故工况下水热力参数的变化规律以及各种事故下管道的自救时间,采用SPS软件建立了中亚天然气C线管道仿真模型。模拟了正常工况下管道全线压力和温度参数,模拟结果与实际运行数据最大相对误差分别为1.90%和12.24%,验证了模型的可靠性;在此基础上分析了环境温度和管道粗糙度变化对全线输气效率的影响规律,确定了各种事故工况下管道最长的自救时间,可为中亚天然气长输管道运行管理提供参考。

The Line C of the China-Central Asia Gas Pipeline is a typical gas pipeline characterized by high transmission pressure,large flow,long pipeline span,numerous gas stations and complicated transportation technology.In order to study the changing law of hydrothermal parameters of the pipeline under normal and accident conditions and the self-rescue time of the pipeline under various accidents,a simulation model of the Line C of the China-Central Asia Gas Pipeline was established using SPS software to simulate the pressure and temperature parameters of the whole pipeline under normal conditions.The maximum relative errors of the pressure and temperature,between simulated results and actual operation data are 1.90%and 6.92%respectively,which verifies the reliability of the model.Based on this,the changes in the ambient temperature and the roughness of the pipeline on the gas transmission efficiency over the whole pipeline were analyzed,and the longest self-rescue time of the pipeline under various accident conditions was determined,which can provide a reference for the operation and managemcnt of the China-Central Asia long-distance gas pipeline.