Experiment and calculation method of fluid leakage in flow passage of pump chamber on centrifugal pump

doi:10.6041/j.issn.1000-1298.2015.06.015

	Experiment and calculation method of fluid leakage in flow passage of pump chamber on centrifugal pump
	Liu, Zailun 1,2; Sun, Yu 1; Wang, Dongwei 1,2; Hou, Yihua 1; Ma, Xijin 1,2
刊名	Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
	2015-06-25
卷号	46 期号:6 页码:97-101
关键词	Centrifugal pumps Efficiency Leakage (fluid) Wear of materials Computational formula Determination methods Diameter ratio Different pressures Leakage coefficient Pressure coefficients Pump chambers Velocity coefficients
ISSN号	10001298
DOI	10.6041/j.issn.1000-1298.2015.06.015
英文摘要	A special testing apparatus was designed for measure and calculation of fluid leakage in flow passage of pump chamber. Gap-diameter ratio was changed by changing axial position of the impeller, i.e., changing the axial clearance of the pump chamber, when gap of wear-ring was 0.2 mm and 0.3 mm, respectively, and length of wear-ring was 15 mm, the import and export liquid pressure and fluid leakage in flow passage of pump chamber (gap-diameter ratio was 0.127, 0.101, 0.076, 0.051, 0.025 and 0.006, respectively) were tested and analyzed. The curves of leakage coefficient and pressure coefficient were obtained under different gap-diameter ratios conditions. In addition, the curves of velocity coefficient and gap-diameter ratio with different pressure coefficients were provided by calculating the experimental data. Results showed that under different gap-diameter ratios, fluid leakage coefficient and pressure coefficient in flow passage of pump chamber varied regularly, their relation curves were almost oblique lines, but gap-diameter ratio and gap of wear-ring can significantly affect curves. When the structure of pump was constant, decrease of axial clearance of pump chamber can effectively reduce fluid leakage, thus the volume efficiency of pump can be increased, and the optimum value range of axial clearance of pump chamber was 1~5 mm. Computational formula of fluid leakage in flow passage of pump chamber and determination method of velocity coefficient were presented. This study is of great significance to the volume efficiency of pump, wheel resistance loss, liquid pressure distribution in pump chamber and the calculation of axial thrust. ©, 2015, Chinese Society of Agricultural Machinery. All right reserved.
语种	中文
出版者	Chinese Society of Agricultural Machinery
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/112418]
专题	能源与动力工程学院
作者单位	1.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Engineering Institute of Wenzhou Pump and Valve, Lanzhou University of Technology, Wenzhou; 325105, China
推荐引用方式 GB/T 7714	Liu, Zailun,Sun, Yu,Wang, Dongwei,et al. Experiment and calculation method of fluid leakage in flow passage of pump chamber on centrifugal pump[J]. Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery,2015,46(6):97-101.
APA	Liu, Zailun,Sun, Yu,Wang, Dongwei,Hou, Yihua,&Ma, Xijin.(2015).Experiment and calculation method of fluid leakage in flow passage of pump chamber on centrifugal pump.Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery,46(6),97-101.
MLA	Liu, Zailun,et al."Experiment and calculation method of fluid leakage in flow passage of pump chamber on centrifugal pump".Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery 46.6(2015):97-101.