肘形进水流道在大中型立式泵站的应用最为广泛, 但在工程实践中对肘形进水流道的水力设计还存在一些问 题。通过对采用立式泵装置的南水北调东线一期工程14 座新建大型泵站肘形进水流道的控制尺寸进行分析, 得到 了肘形进水流道控制尺寸取值范围的基本规律, 提出以大型泵装置优化水力设计理论为基础, 采用CFD 方法对肘 形进水流道进行标准化设计, 同时辅之以模型试验的方法进行验证。最后, 根据肘形进水流道的优化水力设计实 例, 对肘形进水流道标准化的要求提出了初步设想。

Elbow inlet conduit is w idely used in the vertica l pump system of the larg e and medium size pumping stations. H ow ev2 er , there ar e st ill some problems in the engineering practice of hy dr aulic desig n for the conduit. Contr ol sizes o f the elbow inlet co nduit of 14 new ly2built lar ge pumping stations in the first phase of easter n route o f South2to2No rth Water Diver sion Pr oject wer e analyzed, and the basic rules o f the co ntr ol size r ang e wer e obtained. It is sugg ested to conduct the standar dizatio n desig n for the elbow inlet co nduit using the CFD method based on the t heo ry of o pt imal hy dr aulic design fo r the larg e pump system, and to apply the model test to v erif y the r esult s. Finally , accor ding t o an ex am ple o f the optimum hy dr aulic desig n fo r the elbow inlet conduit , the pr eliminary assumpt ion on the requir ements fo r the standardizatio n o f elbow inlet conduit was pro po sed.

江苏省水利科技项目( 2013045)