The invention relates to an aero-engine
labyrinth seal structure with
tooth cavity jet. The aero-engine
labyrinth seal structure with the
tooth cavity jet comprises a fluid inlet, a fluid outlet, a sealing bush, a rotating shaft and multiple levels of labyrinths which are distributed on the rotating shaft, labyrinth tooth cavities are formed between the adjacent two levels of the labyrinths,
tooth cavity radial jet holes are formed in the bottoms of the labyrinth tooth cavities and evenly distributed at the bottoms of the cavities between the labyrinths in the circumferential direction,
airflow is introduced from the interior of the rotating shaft to form radial jet, fracture of a tooth cavity large vortex structure is facilitated,
kinetic energy dissipation of tooth cavity fluid is strengthened, and meanwhile
extrusion is formed on tooth tip jet, flow area of the tooth tip jet is reduced, and the
leakage rate is controlled. According to the aero-engine
labyrinth seal structure with the tooth cavity jet, the tooth cavity jet is adopted,
airflow dissipation inside the labyrinths can be effectively enhanced, and the overall
leakage flow of the fluid is reduced. The aero-engine labyrinth seal structure with the tooth cavity jet is simple in structure and easy to implement and has good project application value.