When products are batched,the variation of flow must generate with the movement of mixed contamination plug in the pipeline,which is decided by the pumping volume, resistance and elevation.

• 在管道顺序输送成品油过程中,随着混油段的移动,管内输量必然会发生变化,某时刻管道的输量将由各站间供能(开泵方案)、耗能(沿程阻力)以及高程决定。