摘要
在干气密封的设计与研究过程中,一般将气体处理为理想气体,但在压力较高时的氮气或空气,以及某些特殊的气体,如二氧化碳、氢气等,即使压力不高的情况下,气体的特性明显偏离理想气体。重点介绍适用几种干气密封常用封气的气体状态方程,较全面地综述了实际气体效应影响干气密封性能的国内外研究进展,包括稳态性能和动态性能,并对未来的研究方向进行了展望。
The medium gas is usually regarded as ideal gas in the design and research process of dry gas seal. However,for high pressure gases(e.g.nitrogen and air) or special low pressure gases(e.g. carbon dioxide and hydrogen),the properties of real gas obviously deviate from those of the ideal gas. In this paper,several equations of state which apply to the common lubricating gas for dry gas seal were emphatically introduced. In addition,the recent advancement in the research on the performance of dry gas seal considering real gas effect,including steady-state and dynamic-state performance,were comprehensively summarized,and some orientations to be further studied were also put forward and discussed.
引文
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