Effects of medium fluid cavitation on fluctuation characteristics of magnetic fluid seal interface in agricultural centrifugal pump
作者机构：Key Laboratory of Fluid and Power MachineryMinistry of EducationXihua UniversityChengdu 610039China Huaneng Gansu Hydropower Development Co.LtdLanzhou 730000China School of Energy and Power EngineeringLanzhou University of TechnologyLanzhou 730050China Zigong Zhaoqiang Sealing Products Industrial Co.LtdZigong 643000SichuanChina
出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)
年 卷 期：2021年第14卷第6期
页 面：85-92页
核心收录：
学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）]
基 金：support of the National Natural Science Foundation of China(Grant No.52079118) the Science and Technology Department of Sichuan Province(Grant No.2020YFH0135) the Open Research Subject of Key Laboratory of Fluid and Power Machinery(Xihua University) Ministry of Education(Grant No.LTDL2021-005) Project of Science and Technology Department of Sichuan Province,(Grant No.202573)
主 题：centrifugal pump magnetic liquid sealing device medium cavitation interface fluctuations
摘 要：The fluctuation law of magnetic fluid seal interface of an agricultural centrifugal pump is theoretically unknown;the pressure and velocity fluctuations are crucial factors that cause interface *** this study,the pressure and velocity fluctuations of the sealing interface on an agricultural centrifugal pump during cavitation were investigated based on the methods of Ansys CFX numerical calculation and experimental *** results demonstrated that at the same flow rate,the pressure fluctuation amplitude of the sealing interface decreased gradually from the shaft surface to the bottom of the polar *** different flow rates,the amplitude of the pressure fluctuation decreased with an increase in the flow *** cavitation of the medium aggravated the impact and water hammer of the liquid,leading to the occurrence of the jitter phenomenon in the sealing interface to accelerate the fluctuation frequency of the axial velocity of the sealing liquid,which accelerated the emulsification of the magnetic *** law can provide a reference for the design of magnetic fluid sealing devices for agricultural centrifugal pumps.
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