水泵进水池中水力现象的研究  

Hydraulic Phenomenon Investigation of Pump Sump

作　　者：柯葵 朱立明[1] 

机构地区：[1]同济大学工程力学系

出　　处：《同济大学学报（自然科学版）》1990年第1期117-122,共6页Journal of Tongji University:Natural Science

摘　　要：进入水泵吸水口的水流其性能如何,对水泵的工作效率影响很大,特别是水泵进水池的水面是否存在引起水泵振动和减少水泵出力的吸气涡。本文对水泵进水池中水力现象进行研究,通过对安徽平圩电厂循环水泵房进水池的模型试验,测试了进水池的速度场,分析了产生水面吸气涡的原因,着重就如何防止水面吸气涡的产生提出一些看法,并在进水池中设置胸墙,抗旋墙来消除水面吸气涡.降低了水泵的工作噪音,提高了水泵的工作效率。The pump efficiency depends on water flow property entering the pump sump. When there is surface vortices on the pump sump surface, which may draw air from the free surface into the pump, the vortex will cause pump vibrations and reduce in pump capacity. In this paper, we have investigated the hydraulic phenomenon of the pump sump. The velocity profile of the sump is measured in the model test of the An HueiPing-Wei Power Station pump house. The vortical formation is analysed. How to prevent surface vortex is discussed. Some methods are used to reduce pump voice and increase pump efficiency, such as surface beam and anti-rotation wall.

关 键 词：水泵 进水池 水力学 

分 类 号：TV136.2[水利工程—水力学及河流动力学]