摘要：When a natural gas pipeline ruptures, the adjacent upstream and downstream automatic line break control valves (ALCVs) should close quickly to prevent significant as leakage. The rate of pressure drop (ROD) setting and ROD duration time are the important parameters that determine whether an ALCV closes in time. This study used transient hydraulic software to evaluate the effect of parameters such as flow rate, operating pressure, distance from a rupture to a valve, and rupture diameter on maximum ROD values of ALCVs installed on the second Shannxi-Beijing gas pipeline. In addition to analyzing the effects of pipeline ruptures, the study also evaluated the effects of valve closing. The study found that pipeline flow rate has little effect on the maximum ROD value caused by a rupture. Operating pressure, distance from a rupture to a valve, and rupture diameter have large effects on the maximum ROD value caused by a rupture. Flow rate and operating pressure have the greatest impacts on the maximum ROD value caused by a valve shutdown. In addition, the greater the ROD duration time, the smaller should be the allowable maximum ROD setting.
© 2015 ASCE.

卷、期、页：p1489-1499

发表日期：2015-01-01

期刊分区（SCI为中科院分区）：无

收录情况：国际学术会议论文集

发表期刊名称：Pipelines: Recent Adv. Undergr. Pipeline Eng. Constr. - Proc. Pipelines Conf.

参与作者：蒋方美,张利亚

通讯作者：靳彬,薛婷

第一作者：左丽丽

论文类型：会议论文

论文概要：左丽丽,蒋方美,靳彬,张利亚,薛婷，Influences on the Rate of Pressure Drop in Automatic Line Break Control Valves on a Natural Gas Pipeline，Pipelines: Recent Adv. Undergr. Pipeline Eng. Constr. - Proc. Pipelines Conf.，2015，p1489-1499

论文题目：Influences on the Rate of Pressure Drop in Automatic Line Break Control Valves on a Natural Gas Pipeline