柱塞泵用磁流体密封设计及优化  

Design and optimization of magnetic fluid seals for piston pumps

作　　者：吴朝军 朱维兵[1] 张林 颜招强 王和顺[1] 张芳麟[3] WU Chao-jun;ZHU Wei-bing;ZHANG Lin;YAN Zhao-qiang;WANG He-shun;ZHANG Fang-lin(School of Mechanical Engineering,Xihua University,Chengdu 610039,China;Zigong Zhaoqiang Sealing Products Industrial Co,Ltd,Zigong 643000,China;Electromechanical Department,Guang􀆳an Vocational and Technical College,Guang􀆳an 638000,China)

机构地区：[1]西华大学机械工程学院,四川成都610039 [2]自贡兆强密封制品实业有限公司,四川自贡643000 [3]广安职业技术学院机电系,四川广安638000

出　　处：《磁性材料及器件》2023年第3期57-66,共10页Journal of Magnetic Materials and Devices

基　　金：四川省科技计划项目(2017HH0049)。

摘　　要：针对传统密封方式应用于往复密封存在磨损和泄漏的问题,以立式柱塞泵为研究对象,设计一种带有斯特密封的新型磁流体密封装置。利用有限元数值分析软件获得磁流体密封件间隙内磁感应强度分布,计算其理论耐压值,分析密封间隙、齿宽、齿高、槽宽等关键参数对密封压力值的影响,并运用响应曲面优化方法对其进行优化设计。结果表明:初设密封装置理论耐压值为0.483 MPa;密封压力值与密封间隙成反比,密封压力值随着齿宽、齿高、槽宽的增大先增大后减小。优化后各结构参数分别为密封间隙0.2 mm,齿宽0.627 mm,齿高1.01 mm,槽宽1.84 mm时,理论密封压力值为0.529 MPa,相比优化前提升了9.5%,且远高于实际应用密封压力值。In view of the problems of wear and leakage in the traditional sealing method applied to reciprocating seals,a new magnetic fluid seal device with a Step seal is designed with a vertical piston pump as the research object.The finite element numerical analysis software is used to study the magnetic induction intensity distribution in the seal gap of the magnetic fluid seal,calculate its theoretical pressure resistance value,analyze the influence of the key parameters of seal gap,tooth width,tooth height and slot width on the seal pressure value,and optimize its design by using the response surface optimization method.The results show that the theoretical pressure resistance value of the initial seal is 0.483 MPa;the seal pressure value is inversely proportional to the seal gap;the seal pressure value increases with the increase of tooth width,tooth height and slot width,and then decreases;after optimization,the theoretical seal pressure value is 0.529 MPa when the seal gap is 0.2 mm,tooth width is 0.627 mm,tooth height is 1.01 mm and slot width is 1.84 mm,respectively,which is 9.5%higher than that before optimization,and much higher than the actual use of seal pressure value.

关 键 词：柱塞泵 磁流体密封 有限元分析 结构参数 响应曲面 耐压值 

分 类 号：TM273[一般工业技术—材料科学与工程] TH136[电气工程—电工理论与新技术]