流体机械2017，Vol.45Issue(2)：22-27,6.DOI:10.3969/j.issn.1005-0329.2017.02.005
螺旋槽干气密封压差扰动下的瞬态特性研究
Transient Response Analysis of Spiral Groove Gas Face Seals under Pressure-drop Fluctuation
摘要
Abstract
Transient performance under fluctuation conditions is important component of the dynamic behavior of spiral groove gas face seals,the current research for which mainly focuses on the steady-state performance.A research on the transient response to pressure-drop fluctuation is performed.The results show that the decrease of sealed pressure will cause greater oscillations in the motions while the increase of sealed pressure is easier to cause face contact.Angular motions will reduce the oscillation amplitude but prolong the oscillation time.It importantly affects the occurrence of face contact together with the axial motion.The squeeze flow effect of gas film can not only transfer the motion of the rotor to the stator,but also reduce the interactive influence of the axial and angular modes to relief oscillations caused by fluctuations.关键词
螺旋槽/干气密封/瞬态特性/扰动Key words
spiral groove/gas seal/transient response/fluctuation分类
机械制造引用本文复制引用
胡松涛,黄伟峰,刘向锋,王玉明..螺旋槽干气密封压差扰动下的瞬态特性研究[J].流体机械,2017,45(2):22-27,6.基金项目
国家973重点基础研究项目(2012CB026003) （2012CB026003）
国家重大科技专项(ZX06901) （ZX06901）
国家科技支撑计划项目(2015BAA08B02) （2015BAA08B02）
