摘要
将油封的表面效应和结构效应的动密封理论作为理论基础,借助大型有限元软件ANSYS CFX对密封介质在密封间隙中的流动情况进行了模拟。分析了油封唇口表层材料弹性皱纹的反旋段和顺旋段的差值(ΔL)以及轴的转速对表面效应引起的泵吸率的影响,以及转速对结构效应引起的泵吸率的影响。结果表明;由表面效应引起的泵吸率随ΔL值的增加及轴转速的提高而增大,由结构效应引起的泵吸率随轴转速的提高而增大;模拟结果与实验结果有较好的一致性,证实了利用有限元方法进行该流体分析的可行性。
The dynamic sealing mechanism of surface effect and structure effect of the oil seal was used as the theory base, and use a finite element software ANSYS CFX to simulate the flow of sealing medium in the sealing clearance. The influence of the difference between reverse segment and clockwise rotating segment （AL） and rotational frequency of the shaft on the reverse pumping brought by the surface effect, and the influence of rotational frequency of the shaft on the reverse pumping brought by the structure effect were analyzed. As a result, the reverse pumping brought by surface effect increases with the increase of AL value and the rotational frequency of the shaft, and the reverse pumping brought by structure effect increases with the increase of the rotational frequency of the shaft. The simulation result has a well consistency with the experiment result, it proves the feasibility of the finite element method in analyzing the liquid.
出处
《润滑与密封》
CAS
CSCD
北大核心
2007年第1期96-98,共3页
Lubrication Engineering
基金
国防科工委十五(二期)重点攻关项目(mkpt-2004-29)
关键词
油封
表面效应
结构效应
密封机制
泵吸率
oil seal
surface effect
structure effect
sealing mechanism
reverse pumping
作者简介
李建国（1981-），男，硕士研究生，主要研究方向：橡胶密封．E-mail：lijiangu01314521@163．com．
