航空发动机轴承腔密封装置和航空发动机
By designing an aero-engine bearing cavity sealing device with an adjustable angle push ring and an elastic sealing ring, the leakage problem of circumferential graphite seals when the rotor deviates from the axis was solved, achieving high-efficiency sealing and long-life performance under yaw conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AECC COMML AIRCRAFT ENGINE CO LTD
- Filing Date
- 2022-03-09
- Publication Date
- 2026-07-17
AI Technical Summary
The circumferential graphite seals of existing aero engines are prone to leakage when the rotor deviates from the axis, and their lifespan is shortened and sealing performance is affected when the rotor is wobbling.
A sealing device for an aero-engine bearing cavity was designed, including an annular component, a sealing seat, a push ring, a graphite sealing ring, and an elastic sealing ring. The push ring can swing within the plane of the annular component, and the angle between the graphite sealing ring and the push ring is adjustable. Together with the elastic sealing ring and the elastic component, the sealing effect is ensured. Frictional heat is reduced through a spiral structure and a cooling system, and the sealing device is protected by a partition wall cooling system.
It effectively reduces the sealing leakage rate and wear when the rotor wobbles, improves sealing performance, extends the service life of the sealing device, adapts to rotor angle wobble and eccentricity, and maintains a good sealing effect.
Smart Images
Figure CN116771920B_ABST