中文摘要：

针对箱涵式进水流道底部易产生涡带的问题，根据涡管强度守恒定理提出了4种新型的消涡装置，为验证4种消涡装置的有效性，采用高速摄影技术分别对设置4种消涡装置的泵装置吸水喇叭管进口处的流态进行了摄影，成功捕捉到不同工况时涡带的生成，分析了有无消涡装置及2种新型消涡装置对泵装置能量性能的影响，分析表明，采用新型消涡装置不仅能消除箱涵式进水流道底部的涡带，还可改善喇叭管内部流态，提高泵装置的能量性能。

英文摘要：

In order to solve the problem of bottom-vortex in the cube type suction passage of pump 4 types of vortex-elimination devices were designed based on the vortex tubes intensity conservation theorem. To verify the validity of these devices, the test-rig was set up for experiment and the high-speed photography was applied to the flow pattern of the suction passage with different types of vortex-elimination devices. The bottom vortices in the original passage were captured successfully under different operation conditions. The effects of 4 new vortex-elimination devices on the hydraulic performance of pump system were analyzed based on the energy test. The results show that the new vortex-elimination device can eliminate the bottom vortex, the flow pattern of flare and the hydraulic performance of pump system can be improved.