摘要
非接触式端面密封运行稳定,端面之间无直接摩擦,能使密封寿命大大延长,作为各种旋转机械的轴端密封有着广泛的应用前景,对于深井、超深井钻探钻具的运行和钻井效率有着重要意义。非接触式端面密封以在端面进行构型设计的方式产生动压效应,提高密封的承载能力。本文阐述端面表面沟槽形状、端面变形、温粘效应和空化效应对端面密封的流体动压效应产生的影响,归纳总结流体动压效应理论、实验和应用的研究现状,并展望未来非接触式端面密封的发展方向。
Non‑contact face seal has a stable operation and no direct friction between the faces,which can greatly extend the seal life and has a wide application prospect as a shaft seal for various rotary machinery.Non‑contact face seals are designed with a configuration on the face to produce a hydrodynamic pressure effect to improve the load carrying capacity of the seal.This paper describes the influence of groove shapes,face deformation,temperature‑stick effect and cavitation effect on the hydrodynamic pressure effect of face seals,summarizes the current research status on the theory,experiment and application of hydodynamic pressure effect,and prospects the future development direction of non‑contact face seals.
作者
薛婷
王瑜
张凯
孔令镕
张伟
刘宝林
XUE Ting;WANG Yu;ZHANG Kai;KONG Lingrong;ZHANG Wei;LIU Baolin(School of Engineering and Technology,China University of Geosciences(Beijing),Beijing 100083,China;Key Laboratory of Deep GeoDrilling Technology,MNR,Beijing 100083,China)
出处
《钻探工程》
2023年第S01期38-43,共6页
Drilling Engineering
基金
国家自然科学基金面上项目“高温全金属马达定转子高速冲蚀与冲滑磨损耦合作用机理研究”(编号:42172343)。
关键词
非接触式
端面密封
流体动压
钻具
旋转机械
non‑contact
face seals
hydrodynamic pressure
drilling tools
rotary machinery
