输气管道的储气与调峰

Gas Inventory and Peak Shaving of Gas Transmission Pipeline

输气管道终端用气量经常处于不断变化之中,尤其是在作为民用时,供气规律将出现不均匀性,由此产生用气高峰和低谷。利用管道储气调峰技术可以很好地解决气田供气的稳定性与终端用气量的不均匀性之间的矛盾,使供气和用气达到平衡,解决的途径是通过瞬态分析方法来实现,该方法采用数学物理方法来准确描述输气管道的动态运行过程,可对输气管道各个时刻的压力和流量的变化规律进行分析,并对管道储气量进行校核,计算精度大大高于静态近似法。以哈依煤气管道应用储气调峰技术为例,给出了瞬态分析中选择初始条件的方法。

The fluctuating gas consumption or peak and/or trough gas consumption always exists in the gas supply terminal,the gas supply regularity during month,day and hour results in a inequality. However,the inequality between the gas supply from gasfield and gas consumption can be equilibrated by a transient analysis method with a mathematical model,the method can accurately describes the dynamic operating process of gas transmission pipeline,analyzes the change regularity of pressure and flow rate at every hour interval and check up the gas inventory. The calculating results is more accurate than the static approximation method. Taking Ha-Yi gas pipeline applied the gas inventory and peak shaving technique as an example, the selection method of initial condition in the transient analysis is given.