化工学报2009，Vol.60Issue(12)：3178-3183,6.
紧急关断阀关断延迟对天然气管道泄漏过程的影响
Effects of closure delay for ESD valve on leaking process of natural gas pipeline
摘要
Abstract
The leaking rate is crucial for the determination of emergency zone and leakage control measures, but most of the existing calculation methods were based on the conditions of steady leaking or dynamic leaking after a simultaneous closure of emergency shut down (ESD) valves. Hence, an equivalent model of gas leakage combined with process of natural gas pipeline is established by using HYSYS simulative software, and the leaking rates in steady and dynamic states are calculated under conditions of closure delays for ESD valves. Results showed that the closure delay of ESD valves has obvious effects on the leaking rates and the flow rates in pipeline, and countercurrent flows would occur in pipeline with the increase in the release hole size. The closure delay of ESD valves has little effect on release duration.关键词
泄漏速率/紧急关断阀/天然气/管道/HYSYSKey words
leaking rate/ emergency shut down valve/ natural gas/ pipeline/ HYSYS分类
能源科技引用本文复制引用
付建民,陈国明,朱渊,龚金海,王勇..紧急关断阀关断延迟对天然气管道泄漏过程的影响[J].化工学报,2009,60(12):3178-3183,6.基金项目
国家科技重大专项项目(2008ZX05017). （2008ZX05017）
