离心式水泵仿生非光滑增效的试验研究

基于仿生非光滑技术,通过改变离心式水泵中液体的流动结构降低固液界面的阻力,研究了水泵的增效问题。并设计了试验系统,采用L9(34)正交试验,以离心式水泵效率为试验指标,进行了离心式水泵的流量、扬程、电压和电流的测量。对比试验表明,在离心式水泵的有效工作流量范围内,某些仿生改形表面的模型具有十分明显的效果,效率提高最大为3.45%,最大增效率为6.81%。并优化出在两个流量段的主次因素和最优水平,为仿生非光滑技术在离心式水泵中应用的进一步研究提供了前期基础。

Experimental study on efficiency enhancement of centrifugal water pump by bionic non-smooth technique

The bionic non-smooth technique was applied to the centrifugal water pump to modify the liquid flow structure in the pump to reduce the hydraulic drag in the liquid-solid interface,resulting in the enhancement of the pump efficiency.A test system was developed and an L9(34) orthogonal experiment design was used to test the pump efficiency under different flow rates,lifts,electric voltages and currents.The results show that some models with the bionic non-smooth working surfaces are very effective,with the pump efficiency enhancement of 3.45%,that means its growth rate of 6.81%.The major and minor factors in two flow rate segments and their optimized levels were found,providing a preliminary basis for the application of the bionic non-smooth technique to the contrifugal water pump.