大型市政排水泵站集水池常见的不利水力现象及对策

Common Adverse Hydraulic Phenomena and Countermeasures about Sump in Large Municipal Drainage Pumping Station

简要分析了市政排水泵站集水池内因进水流道预旋过多、水泵吸入口流速不均匀及集水池水体漩涡产生三种不利的水力现象,从排水系统布置、集水池布置及泵站流道布置三个方面分别提出了相应对策,对大型市政排水泵站的集水池设计参数具有参考和借鉴意义。

Three adverse hydraulic phenomena including excessive pre-swirl in inlet flow channel, uneven velocity at pump inlet and vortices in sump were analyzed. The corresponding countermeasures were put forward from the arrangement of the drainage system, the arrangement of sump and the arrange- ment of flow channel in pumping station, which could provide a reference for design of sump in large mu- nicipal drainage pumping station.