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在对单向螺旋槽CFD数值模拟的基础上,对适用于双向旋转场合的双向槽型干气密封气膜动态特性进行数值分析,主要讨论了双向槽型干气密封气膜的开启力及泄漏量特征,进一步的研究发现双向槽型干气密封中起主要作用的是工作槽区,非工作槽区不会明显增强或削弱干气密封的开启力能力,其主要作用是为了适应双向旋转的要求。同时通过与单向螺旋槽的性能对比,确定双向槽比单向槽具有更加稳定的运行性能。
Based on the CFD numerical simulation of the unidirectional spiral groove, the numerical analysis of the dynamic characteristics of the double-directionally grooved dry gas seal film applied in the bidirectional rotation is mainly discussed. The opening force and leakage of the double-direction dry gas seal film Volume characteristics, further study found that two-way slot dry gas seal plays a major role in the working groove area, the non-working groove area will not significantly enhance or weaken the dry gas seal opening force capacity, its main role is to adapt to two-way rotation Claim. At the same time through the performance of one-way spiral groove compared to determine the two-way groove than the one-way groove has more stable performance.