Over-compression Characteristic in Liquid Ring Pump and Working Mechanism of Exhaust Check Valve

	Over-compression Characteristic in Liquid Ring Pump and Working Mechanism of Exhaust Check Valve
	Zhang, Ren-Hui 1,2; Jiang, Li-Jie 1; Guo, Guang-Qiang 1; Sun, Peng-Cheng 1; Meng, Fan-Rui 3
刊名	Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
	2020-07-01
卷号	41 期号:7 页码:1673-1678
关键词	Compressibility of liquids Energy efficiency Energy utilization Liquids Pumps Gas liquid two-phase flows Hydraulic performance Liquid ring pumps Over-compression Phase distribution Pressure differences Two phase flow model Working mechanisms
ISSN号	0253231X
英文摘要	Concerning the gas over-compression phenomenon which is easily occur in liquid ring pump, the VOF two-phase flow model was used to simulate the internal gas liquid two-phase flow in liquid-ring pump at compressor conditions. The effects that opening of exhaust check valve on the flow structure and hydraulic performance of liquid-ring pump was investigated, and the pressure and phase distribution of pump inner flow under different compression ratio was analyzed. The results show that the over-compression phenomenon is easily occur in the front of exhaust with the decrease of outlet pressure, which would lead the increasing the energy consumption and decreasing of pump efficiency. The over-compression phenomenon aggravates with the decrease of outlet pressure. Under lower compression ratio condition, the exhaust check valve would open automatically with the action of pressure difference, which can effectively avoid the over-compression phenomenon, and improve the efficiency and suction capacity of the liquid ring pump. To analyze the effects of the exhaust check valve area on the performance of liquid ring pump, three kinds of check valve arrangement with different area were proposed on the basis of original design. The analysis results show that under the lower compression ratio condition, the larger area of check valve can effectively increase the suction capacity of liquid ring pump, reduce the velocity of the valve, and enhance the performance of pump. © 2020, Science Press. All right reserved.
语种	中文
出版者	Science Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115435]
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.Key Laboratory of Fluid Machinery and Systems, Lanzhou University of Technology, Lanzhou; Gansu Province; 730050, China; 3.Zibo Water Ring Vacuum Pump Factory Co., LTD, Zibo; 255200, China
推荐引用方式 GB/T 7714	Zhang, Ren-Hui,Jiang, Li-Jie,Guo, Guang-Qiang,et al. Over-compression Characteristic in Liquid Ring Pump and Working Mechanism of Exhaust Check Valve[J]. Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics,2020,41(7):1673-1678.
APA	Zhang, Ren-Hui,Jiang, Li-Jie,Guo, Guang-Qiang,Sun, Peng-Cheng,&Meng, Fan-Rui.(2020).Over-compression Characteristic in Liquid Ring Pump and Working Mechanism of Exhaust Check Valve.Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics,41(7),1673-1678.
MLA	Zhang, Ren-Hui,et al."Over-compression Characteristic in Liquid Ring Pump and Working Mechanism of Exhaust Check Valve".Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics 41.7(2020):1673-1678.