Experiment and calculation of fluid pressure in pump chamber and balance cavity of centrifugal pump

doi:10.6041/j.issn.1000-1298.2016.08.007

	Experiment and calculation of fluid pressure in pump chamber and balance cavity of centrifugal pump
	Liu, Zailun 1; Wang, Dongwei 1,2; Hou, Yihua 1; Ma, Xijin 1
刊名	Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery
	2016-08-25
卷号	47 期号:8 页码:42-47 and 324
关键词	Calculations Centrifugal pumps Experiments Flow control Leakage (fluid) Mathematical models Computational formula Fluid pressures Mathematics model Pressure loss coefficient Pump chambers Systematical analysis Testing apparatus Theoretical calculations
ISSN号	10001298
DOI	10.6041/j.issn.1000-1298.2016.08.007
英文摘要	A special testing apparatus was designed for measuring and calculating fluid pressure in pump chamber and balance cavity, fluid pressure in front-back pump chambers was measured and analyzed by changing balance hole diameter and using a pressure sensor. It was found that liquid pressure in back cavity was generally bigger than that in front cavity under normal conditions of seal ring,and the curves of fluid pressure in front-back pump chamber above the diameter of seal ring were different. Based on systematical analysis of pressure curve of pump chamber with or without fluid leakage, the computational formula of fluid pressure in pump chamber with fluid leakage was presented by introducing pressure loss coefficient under the design condition. The fitting formulas of pressure loss coefficient were given by calculation of experimental data under the design condition. Moreover, the theoretical calculation results and the experiment results of fluid pressure in pump chamber with fluid leakage had also been contrasted and analyzed for two centrifugal pumps. The results showed that the computational formula of fluid pressure in pump chamber with fluid leakage had high credibility. Fluid pressure in balance cavity was calculated using mathematics model under the design condition. The experiment results proved that this mathematics model could accurately forecast fluid pressure in pump chamber. In order to control the fluid leakage and reduce the axial thrust, it was proposed that the balance holes diameter of 6~8 mm was appropriate through analyzing the theoretical calculation results and experimental results. © 2016, 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/112519]
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 & Valve, Lanzhou University of Technology, Wenzhou; 325105, China
推荐引用方式 GB/T 7714	Liu, Zailun,Wang, Dongwei,Hou, Yihua,et al. Experiment and calculation of fluid pressure in pump chamber and balance cavity of centrifugal pump[J]. Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery,2016,47(8):42-47 and 324.
APA	Liu, Zailun,Wang, Dongwei,Hou, Yihua,&Ma, Xijin.(2016).Experiment and calculation of fluid pressure in pump chamber and balance cavity of centrifugal pump.Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery,47(8),42-47 and 324.
MLA	Liu, Zailun,et al."Experiment and calculation of fluid pressure in pump chamber and balance cavity of centrifugal pump".Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery 47.8(2016):42-47 and 324.