新型动静压混合润滑机械密封流场数值研究  

Numerical Study on Flow Field of New-type Hydrostatic-dynamic Hybrid Lubrication Seal

作　　者：王彬[1] 郝木明[1] 

机构地区：[1]中国石油大学(华东),山东东营257061

出　　处：《润滑与密封》2009年第7期62-65,73,共5页Lubrication Engineering

摘　　要：以流体膜为研究对象,建立了新型动静压混合润滑密封端面的三维模型,并利用流体力学软件FLUENT对端面流场进行数值模拟,得出端面液膜的压力分布及速度分布。通过与静压和动压式密封对比,分析了操作参数(如封液压力、转速)对密封性能的影响规律。结果表明,该密封兼有动压与静压两种密封形式的特点,泄漏量小,液膜刚度大,适合于低速非接触密封。A three-dimensional model of the new-type hydrostatic-dynamic hybrid lubrication seals was developed based on fluid film. The pressure and velocity distribution of fluid film was simulated by using the software of computational fluid dynamics. The law of influence of operating parameters （ sealant pressure, rotating speed） on sealing performance was analyzed by comparing with hydrostatic seals and dynamic seals. The results show that this type of seal has the characteristics of hydrostatic seals and dynamic seals,it has low leakage and high film stiffness, and is suitable for low speed non-contacting seals.

关 键 词：机械密封 动静压混合润滑 数值模拟 低速 

分 类 号：TH136[机械工程—机械制造及自动化]