关键词: 水力摩阻系数, 输气干线, 经验公式, 水力光滑区, 天然气, 测算法, 流量公式, 关系曲线, 运行数据, 管输

Abstract: On the basis of the pipeline parameters,gas qualities and operation data of Fu-An gas trunk pipeline, this article gives empirical equations used for calculation of hydraulic friction coefficient, pipeline efficiency and flowrate in the hydraulically smooth zone. The relations of pipeline efficiency versus flowrate and that of hydraulic slope versus flowrate are drawn. A comparison of calculated values with measured ones from the Fu-An and Zhongbadeyang pipelines showed a 2% deviation on the arrange and no any figure greater than 5%. How ever comparison of the values calculated with Weymouth equation gave a deviation between 200% and 300%, up to 500%. This paper indicates that the new empirical. equations can be used for the hydraulically smooth flow region and for calculation in the design of a new pipeline. The relations in the diagrams can be used for pipeline operation, scheduling of purge and detection of leakage.