Variable-pitch profile equation of screw centrifugal pump

doi:10.3969/j.issn.1674-8530.2012.03.009

	Variable-pitch profile equation of screw centrifugal pump
	Cheng, Xiaorui; Li, Rennian; Li, Yibin; Fan, Ying; Shen, Lixin
刊名	Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering
	2012-05-01
卷号	30 期号:3 页码:289-294
关键词	Centrifugal pumps Computational fluid dynamics Computer simulation Efficiency Impellers Liquids Screws Volume fraction Blade profile equations Hydraulic performance Liquid-solid two phase flow Parametric equation Screw centrifugal pumps Solid-phase concentration Structure characteristic Variable pitch
ISSN号	16748530
DOI	10.3969/j.issn.1674-8530.2012.03.009
英文摘要	According to the structure characteristics of impeller of a screw centrifugal pump, the streamwise evolutionary pattern of blade pitch was analyzed by applying the theory of relative velocity ratio of liquid-solid two-phase flow model for an impeller pump, and then a parametric equation for variable-pitch was deduced. For the given hydraulic performance parameters and a volume fraction of the solid phase at the design point, a smooth, three-dimensional blade profile could be established through the parametric equations. The water performance of a screw centrifugal pump whose blades were designed in that way was measured, and accordingly its performances of liquid-solid two-phase flow were estimated numerically at three volume fractions of 5%, 15% and 25% with a CFD code, respectively. The results show that the pump efficiency for transporting solid-liquid two-phase medium is better than for transporting water. At the design point, for a given volume fraction of solid phase, the pump efficiency is increased by 8.5%; however, when the volume fraction is different from that given value, the pump efficiency is reduced. Compared with water single phase flow, the pump head of liquid-solid two-phase flow is not only decreased, and but also lowered gradually with increasing solid-phase concentration.
语种	中文
出版者	Editorial Department of Journal of Drainage and Irrigation Machinery Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/110979]
专题	能源与动力工程学院新能源学院
作者单位	School of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou, Gansu 730050, China
推荐引用方式 GB/T 7714	Cheng, Xiaorui,Li, Rennian,Li, Yibin,et al. Variable-pitch profile equation of screw centrifugal pump[J]. Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering,2012,30(3):289-294.
APA	Cheng, Xiaorui,Li, Rennian,Li, Yibin,Fan, Ying,&Shen, Lixin.(2012).Variable-pitch profile equation of screw centrifugal pump.Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering,30(3),289-294.
MLA	Cheng, Xiaorui,et al."Variable-pitch profile equation of screw centrifugal pump".Paiguan Jixie Gongcheng Xuebao/Journal of Drainage and Irrigation Machinery Engineering 30.3(2012):289-294.