液体管道的泄漏仿真

Leak Simulation for Liquid Pipelines

为了找出管道参数的动态变化规律,基于管道的机理模型,通过引入附加边界条件,对泄漏量、泄漏位置和泄漏上升时间对管道内参数的影响进行仿真。结果表明,其他两个因素保持不变的条件下,泄漏量主要影响管道参数的幅值,泄漏上升时间主要影响其波形,泄漏位置会同时影响其幅值和波形,而管道泄漏量和孔的大小及其位置密切相关,而且泄漏管道参数具有和停泵显著不同的特征,可以为运行指导、泄漏检测和人员培训提供必要的辅助手段。

To obtain the dynamic changes of the flowing parameters for operation and leak detection of pipelines, based on the physical model of pipeline and by introducing terminology boundary condition, the influence of leakage scale, leakage position and the rising time on pressures and flow rates in the pipeline is simulated. The results show that the leakage scale and the rising time mainly influenee the amplitude and the shape of the parameter curves respectively while the leakage position influences both of them and the leakage rate is determined by the diameter of the hole and its distance from upstream. Further more the leakage and pump operation have different influences on the parameters and can be used as an aid for operation guide, leak detection as well as operator training.