摘要
针对水润滑立式高速液压主轴存在的端部泄漏问题,提出了以螺旋密封为主要密封方式的密封方案。并采用有限体积法,对不同工况下螺旋密封内部流场进行了非定常紊流数值模拟。研究了螺旋密封结构几何参数及转速和间隙与密封效果之间的关系。结果表明在紊流状态下,随着转速的增大,螺旋密封有效浸油长度减小,但伴随着会出现明显的气吞现象。同时,偏心率对密封效果影响也较大。
Aimed at the problem of spindle end leakage on high-speed hydraulic spindle with water lubrication, a com- bined method which integrated the helical seal with other seal was proposed. The finite volume method was used in the three-dimensional numerical simulation of unsteady turbulent flow on the inner fluid field of the helical seal in different conditions. The result demonstrates that effective oil-soaked length decreases with the increase of spindle rotational speed. In this process,it appeares obvious cavitations. The influence of spindle eccentricity should be taken into account.
出处
《润滑与密封》
CAS
CSCD
北大核心
2009年第4期80-83,共4页
Lubrication Engineering
关键词
螺旋密封
数值模拟
水润滑
体积率法
helical seal
numerical simulation
water lubrication
volume of function
