密封液体流动特性对磁液密封界面的影响

兰州理工大学学报 ›› 2022, Vol. 48 ›› Issue (6): 63-66.

密封液体流动特性对磁液密封界面的影响

秦杏尧¹, 李望旭², 李正贵^*2,3, 黎义斌⁴, 颜招强³

1.山东华鲁恒升化工股份有限公司, 山东德州 253024;
2.流体及动力机械教育部重点实验室(西华大学), 四川成都 610039;
3.自贡兆强密封制品实业有限公司, 四川自贡 643000;
4.兰州理工大学能源与动力工程学院, 甘肃兰州 730050

收稿日期:2021-07-22 出版日期:2022-12-28 发布日期:2023-03-21
通讯作者: 李正贵(1974-),男,甘肃兰州人,教授.Email:lzhgui@mail.xhu.edu.cn
基金资助:
国家自然科学基金(52079118),四川省科技厅项目(2020YFH0135)

Effect of sealing fluid flow characteristics on magnetoliquid

QIN Xing-yao¹, LI Wang-xu², LI Zheng-gui^2,3, LI Yi-bin⁴, YAN Zhao-qiang³

1. Shandong Hualu Hengsheng Chemical Co. Ltd., Dezhou 253024, China;
2. Key Laboratory of Fluid and Power Machinery,Ministry of Education(Xihua University), Chengdu 610039, China;
3. Zigong Zhaoqiang Sealing Products Industrial Co. Ltd., Zigong 643000, China;
4. School of Energy and Power Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China)

Received:2021-07-22 Online:2022-12-28 Published:2023-03-21

摘要/Abstract

摘要： 水轮机轴部应用磁性液体密封时,存在密封转速低、不稳定等现象,密封液体流场特性对密封失效有重大影响.基于数值计算的方法,对比了磁性液体动、静密封时密封液体的流场特性,并进行了实验验证.结果表明,密封压力对密封液体流场影响较小,轴转速对密封液体流场影响较大.该结论可为设计水轮机主轴的磁性液体密封装置提供理论指导.

关键词: 磁性液体, PIV, 旋转密封, 水力机械

Abstract: When the magnetic liquid is applied to seal the shaft of hydraulic turbine, the sealing speed is low and unstable, and the characteristics of sealing liquid flow field have a great influence on the sealing failure. Based on the numerical calculation method, the flow field characteristics of the magnetic liquid seal are compared and verified by the experiments. The results show that the sealing pressure has little influence on the sealing liquid flow field, while the shaft speed has a great influence on the sealing liquid flow field. The conclusion provides theoretical guidance for the design of magnetic liquid sealing device for hydraulic turbine spindle.

Key words: magnetic liquid, PIV, rotary seal, hydraulic machinery

中图分类号:

TB42

秦杏尧, 李望旭, 李正贵, 黎义斌, 颜招强. 密封液体流动特性对磁液密封界面的影响[J]. 兰州理工大学学报, 2022, 48(6): 63-66.

QIN Xing-yao, LI Wang-xu, LI Zheng-gui, LI Yi-bin, YAN Zhao-qiang. Effect of sealing fluid flow characteristics on magnetoliquid[J]. Journal of Lanzhou University of Technology, 2022, 48(6): 63-66.

参考文献

[1] 李德才,袁祖贻.磁流体密封齿型的理论分析与实验 [J].流体机械,1995,23(12):3-7.
[2] 李望旭,李正贵,袁久越,等.变运行参数的磁性液体密封中磁液温度特性分析 [J].润滑与密封,2021,46(9):61-67.
[3] MERKLEIN M,ROSEL S.Characterization of a magnetorheological fluid with respect to its suitability for hydroforming [J].International Journal of Material Forming,2010,3(1):283-286.
[4] XU Biao,LUO Yiping,REN Hongjuan.Review on magneto-rheological fluid and its application [J].Am.J.Nanosci.Nanotechnol,2014,2(4):70-74.
[5] MOSKOWITZ R.Dynamic sealing with magnetic fluids [J].Asle Transactions,1975,18(2):135-143.
[6] ZHOU H L,ZHAO W,ZHANG H D,et al.Magnetorheological seal:A review[J].International Journal of Applied Electromagnetics and Mechanics,2020,62(4):763-786.
[7] 牧振伟,贵辛未,夏庆成,等.基于CFD的主轴密封泵板装置结构优化设计 [J].排灌机械工程学报,2021,39(1):1-7.
[8] 黎义斌,王岩,歹晓晖,等.不同密封结构对离心泵叶轮轴向窜动的敏感性分析 [J].排灌机械工程学报,2021,39(2):122-127.
[9] 韩宝华,黎义斌,王秀勇,等.核主泵密封间隙对轴向力影响的敏感度分析 [J].排灌机械工程学报,2019,37(8):662-667.
[10] 吴磊,孙大新,刘中国,等.磁流体密封技术简介 [J].液压气动与密封,2015,35(8):70-73.
[11] VAN-DER-WAL K,VAN-OSTAYEN R A J,LAMPAERT S G E.Ferrofluid rotary seal with replenishment system for sealing liquids [J].Tribology International,2020,150:106372.
[12] YANG Xiaolong,SUN Peng,HAO Fuxiang.Magnetic field finite element analysis of diverging stepped ferrofluid seal with a large gap and two magnetic sources [J].International Journal of Applied Electromagnetics and Mechanics,2020,63(1):31-44
[13] LIU T G,CHENG Y S,YANG Z Y.Design optimization of seal structure for sealing liquid by magnetic fluids [J].Journal of Magnetism and Magnetic Materials,2005,289:411-414.
[14] ZHAO Meng,ZOU Jibin,HU Jianhui.An analysis on the magnetic fluid seal capacity[J].Journal of Magnetism and Magnetic Materials,2006,303(2):428-431.
[15] QIAN J G,YANG Z Y.Characteristics of a magnetic fluid seal and its motion in an axial variable seal gap [J].Journal of China University of Mining and Technology,2008,18(4):634-636.
[16] WILLIAMS R A,MALSKY H.Some experiences using a ferrofluid seal against a liquid [J].IEEE Transactions on Magnetics,1980,16(2):379-381.
[17] 李仁年,谭海燕,李琪飞,等.水泵水轮机转轮区域脉动特性分析 [J].排灌机械工程学报,2015,33(12):1038-1043
[18] 黎义斌,何慧,范兆京,等.叶顶间隙对斜流泵叶轮内部空化流动的影响 [J].排灌机械工程学报,2020,38(3):224-229.
[19] 程效锐,魏彦强,吴超,等.动静转子间隙比对核主泵水力性能的影响 [J].排灌机械工程学报,2020,38(10):979-984.
[20] 赵万勇,陈帅,赵强,等.蜗壳断面面积变化规律对双吸离心泵水力性能的影响 [J].排灌机械工程学报,2020,38(9):871-877.
[21] 杨华,孙丹丹,汤方平,等.轴流泵非稳定工况下叶轮进口流场实验研究 [J].排灌机械工程学报,2011,29(5):406-410.