输气管末段长度和管径的计算

输气管末段贮气是用来解决天然气用户昼夜用气不均衡性的方法之一。由于末段终点用户用气昼夜波动,末段内气体处于不稳定流动,本文采用气体不稳定流动的方程计算末段的长度和管径,不稳定工况计算方法的结果和稳定工况计算方法的比较结果表明:按稳定工况计算方法确定的输气管末段长度有时并不能满足为消除昼夜用气不均衡所需的贮气能力。

CALCULATION OF LENGTH AND DIAMETER OF GAS PIPELINE END

Gas storage of pipeline end is used to overcome the unbalance of gas consumption round the clock. As the users undulatory gas consumption at the end of pipeline day and night causes the unsteady gas flow in pipeline end, this paper applies the gas unsteady flow equation to calculate the length and diameter of pipeline end. After comparing the results by the unsteady gas flow calculating method with those by the steady gas flow calculating method, it is shown that the pipeline end determined according to steady gas flow calculating method could not meet the demands of overcoming unbalance of gas consumption the clock round sometimes.