Sealing device and turbomachine comprising the sealing device
AssigneeSafran Aircraft Engines
InventorsDavid Roger Pierre LEGRAND, Samia DAHITE, Hervé SIMONOTTI
Life of this patent
Estimating the term…
Abstract
A sealing device including a ring having a main sealing lip and a secondary sealing lip, where the main sealing lip presents an inner surface and the secondary sealing lip presents a radial surface, the sealing device also including a casing having a cylindrical portion and a radial portion, where the radial portion presents a contact surface, the ring being biased so as to apply the radial surface of the secondary sealing lip against the contact surface of the casing, where the sealing device presents at least one leakage path extending between the secondary sealing lip and the casing.
Claims10
A sealing device for a turbomachine for providing a seal between a first housing and a second housing, said sealing device comprising:
- a ring, the ring presents a substantially annular form extending around an axis of revolution extending along a longitudinal direction, the ring comprising a main sealing lip and a secondary sealing lip, the main sealing lip presents an inner surface configured to be in contact radially with an annular surface of a shaft, the secondary sealing lip presents a radial surface extending perpendicularly to the longitudinal direction, and
- a casing, the casing configured to be sealingly maintained in relation to a separation wall, the casing comprising a cylindrical portion and a radial portion, the cylindrical portion extends along the longitudinal direction around the ring, the radial portion presents a contact surface extending perpendicularly to the longitudinal direction, the ring being biased so as to apply the radial surface of the secondary sealing lip against the contact surface of the casing, wherein the sealing device presents at least one leakage path forming a communication between the first housing and the second housing, the at least one leakage path extending between the secondary sealing lip and the radial surface of the casing.
A turbomachine comprising a first housing, a second housing, a separation wall extending between the first housing and the second housing, a shaft having an annular surface and a sealing device, wherein sealing device comprises:
- a ring, the ring presents a substantially annular form extending around an axis of revolution extending along a longitudinal direction, the ring comprises a main sealing lip and a secondary sealing lip, the main sealing lip presents an inner surface being in contact radially with the annular surface of the shaft, the secondary sealing lip presents a radial surface extending perpendicularly to the longitudinal direction, and
- a casing, the casing is sealingly maintained in relation to the separation wall, the casing comprises a cylindrical portion and a radial portion, the cylindrical portion extends along the longitudinal direction around the ring, the radial portion presents a contact surface extending perpendicularly to the longitudinal direction, the ring being biased so as to apply the radial surface of the secondary sealing lip against the contact surface of the casing,
- wherein the sealing device presents at least one leakage path forming a communication between the first housing and the second housing, the at least one leakage path extending between the secondary sealing lip and the radial surface of the casing.
Dependencies are inferred from the claim text.