某天然气长输管道线路截断阀保护能力研究

Study on Protective Capability of Block Valve in Gas Pipelines

为了研究国内天然气长输管道线路截断阀对管道压力异常变化的保护能力,采用SPS与OLGA软件计算并分析了某实际天然气长输管道在可能出现的事故工况下线路截断阀的自动截断保护能力。研究结果表明,在管道实际运行工况下,当发生主管道破损、旁通管破损等事故时,上下游线路截断阀无法全部实现保护功能,因此,建议针对不同线路截断阀分别进行研究与优化,提高事故状态下线路截断阀的自动截断的保护能力。

In order to study the protective capability of the block valve to the abnormal variation of pressure parameter in gas pipeline, SPS and OLGA software are used to calculate and analyze the automatic truncation protection of the black valve in the event of accident condition occurring in an actual natural gas pipeline. The results show that both block valves of the upstream and downstream cannot realize the protection function when the main pipeline is broken or the bypass pipeline is broken in the actual operation condition of the pipeline. Therefore, it is recommended to study and optimize the different block valves separately to improve the protection of the accident state.