低扬程泵站拍门水压消能关键技术研究与应用

Key technology research and application of hydraulic energy dissipation in low-lift pumping station flap valve

江苏省低扬程泵站通常使用拍门作为断流装置,泵站实际运行过程中常会遇到停机后拍门因水流扰动影响而延时关闭,造成拍门撞击力过大产生剧烈的水锤压力等问题。为有效避免拍门受外力损伤,提高工程安全可靠性,研制探索一种新型拍门水压消能装置,安装在拍门底部,借以消减落门动能,避免危害性撞击,保障泵站工程安全运行,可为类似泵站管理运用提供参考。

In Jiangsu Province,low-lift pumping stations usually use flap valve as flow-cutting devices.During the actual operation of the pumping station,it is often encountered that the flap valve is delayed to close due to the influence of water flow disturbance after the shutdown,resulting in the excessive impact force of the flap valve and the severe water hammer pressure.In order to avoid the flap valve being damaged by external force effectively and improve the safety and reliability of the project,a new type of water pressure energy dissipating device is developed for the flap valve which is installed at the bottom of the flap valve to reduce the kinetic energy of the falling valve,to avoid harmful impacts,and to ensure the safe operation of the pumping station project.It can provide a reference for the management and application of similar pumping stations.