The effect of impeller slot jet on centrifugal pump performance

doi:10.1007/s42241-018-0161-z

	The effect of impeller slot jet on centrifugal pump performance
	Zhang, Ren-hui1,2 ; Yun, Li-chen 1; Li, Jing 1
	2019-08
发表期刊	JOURNAL OF HYDRODYNAMICS
ISSN	1001-6058
卷号	31 期号:4 页码:733-739
摘要	To improve the cavitation performance of the centrifugal pump, a new kind of centrifugal pump impeller with slot is proposed. The slot is on the impeller shroud near the suction side of the blade leading edge. So, the fluid with high energy in the impeller front side chamber is drained to the lowest pressure area. The jet flow would compensate the blade inlet flow with a certain energy. With numerical simulations, the pump's inner flows for 5 different slot sizes and their hydraulic performances are compared with those of the prototype pump. The slot jet would result in the increase of the impeller flow rate and the volute area ratio, leading to the head decrease within the whole flow rate range. The slot jet can suppress the reverse flow remarkably at a low flow rate, and the pump efficiency is improved. The slot jet improves the pump cavitation performance effectively, especially at a low flow rate. To some extent, the smaller the slot size is, the better the pump cavitation performance is. The cavitation performance of the slot impeller with a size of 2 mmx1.75 mm is much better than that of the prototype impeller. Compared with the prototype impeller, the lowest pressure near the slot impeller blade inlet and even the pressure in all forepart regions are improved significantly. The slot impeller is shown to be effective in suppressing the cavitation, and the available net positive suction head is improved.
关键词	Centrifugal pump slot impeller slot jet cavitation performance circulation flow
DOI	10.1007/s42241-018-0161-z
收录类别	SCI ; SCIE
语种	英语
资助项目	National Key Research and Development Program of China[2016YFB0200901] ; National Natural Science Foundation of China[51469014]
WOS研究方向	Mechanics
WOS类目	Mechanics
WOS记录号	WOS:000478609600009
出版者	SPRINGER
EI入藏号	20193207276480
EI主题词	Impellers
EI分类号	601.2 Machine Components - 618.2 Pumps - 631 Fluid Flow - 631.1.1 Liquid Dynamics - 654.1 Rockets and Missiles
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/31657
专题	能源与动力工程学院
通讯作者	Zhang, Ren-hui
作者单位	1.Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, China Key Lab Fluid Machinery & Syst, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	能源与动力工程学院; 兰州理工大学
通讯作者单位	能源与动力工程学院; 兰州理工大学
第一作者的第一单位	能源与动力工程学院
推荐引用方式 GB/T 7714	Zhang, Ren-hui,Yun, Li-chen,Li, Jing. The effect of impeller slot jet on centrifugal pump performance[J]. JOURNAL OF HYDRODYNAMICS,2019,31(4):733-739.
APA	Zhang, Ren-hui,Yun, Li-chen,&Li, Jing.(2019).The effect of impeller slot jet on centrifugal pump performance.JOURNAL OF HYDRODYNAMICS,31(4),733-739.
MLA	Zhang, Ren-hui,et al."The effect of impeller slot jet on centrifugal pump performance".JOURNAL OF HYDRODYNAMICS 31.4(2019):733-739.

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