摘要：To objectively evaluate the consequences of the pipeline leakage and ensure the safe operation and reliable gas supply of the gas pipeline, it is necessary to calculate the leakage flow rate variations. A novel model for transient leakage flow rate calculation of gas transmission pipelines is proposed in this paper. Based on the pressure data collected at the upstream and downstream block valve rooms of the leakage position, the time for alarm signal and closure signal of block valves can be determined, and the leakage orifice can be calculated by the iterative method based on the collected data of the block valve rooms from alarm signal to closure signal. The leakage process is divided into two stages according to the time when the leakage occurred and two block valves were automatically closed, and the leakage flow rate at each stage is calculated based on the characteristic line method. The proposed method is applied to a real gas transmission pipeline in China, and the minimum detectable leakage orifice at different locations is calculated, and sensitivity analyses of leakage location on leakage flow rate calculations are conducted in detail.
© 2020 Elsevier B.V.

ISSN号：1875-5100

卷、期、页：v 77,

发表日期：2020-05-01

影响因子：3.841400

期刊分区（SCI为中科院分区）：二区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：Journal of Natural Gas Science and Engineering

参与作者：王炜硕

通讯作者：陈潜,才进,吴健行

第一作者：邢晓凯,左丽丽

论文类型：期刊论文

论文概要：陈潜,邢晓凯,才进,左丽丽,吴健行,王炜硕，A novel method for transient leakage flow rate calculation of gas transmission pipelines，Journal of Natural Gas Science and Engineering，2020，v 77,

论文题目：A novel method for transient leakage flow rate calculation of gas transmission pipelines