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航空发动机在高温高压及高界面相对滑动速度的环境下工作,其接合面处流体的泄露,或是外界杂质的侵入,会造成难以估量的损失。叶片式密封,作为航空发动机一种新型的密封形式已经成为密封领域重要的研究课题,其具有低泄露、低损耗,径向柔性的特点,在转子偏心运转及瞬间跳动能正常工作,并且其轴向刚度较大,能承受较大的压差。本文对密封技术的形式和研究现状进行分析,对叶片式密封进行结构分析,并对其密封性能进行仿真分析。
Aeroengines operate at high temperatures and pressures with high relative sliding velocity, resulting in incalculable losses due to leakage of fluids at the joints or intrusion of external contaminants. Vane sealing, as a new type of aero-engine sealing, has become an important research subject in the field of sealing. It has the characteristics of low leakage, low loss and radial flexibility. It can work normally when the rotor runs eccentrically and momentarily, and its shaft To the larger stiffness, can withstand greater pressure. In this paper, the form and research status of the sealing technology are analyzed. The structure of the vane seal is analyzed and its sealing performance is simulated.