System for sealing and draining oil leaks for a turbomachine bearing enclosure

A system for sealing and draining leaks of oil for a turbine-engine chamber enclosing a bearing, the system comprising:

• the bearing which comprises a stator and a rotor which is carried by the stator, the stator rotating about a rotation axis;
• a seal carried by the stator and surrounding the rotor;
• an external circumferential groove carried by the stator while being contiguous with the seal to collect leaking oil travelling along the rotor through the seal and which is centrifuged by the rotor towards the external circumferential groove;
• and
• a drain located at a lowest point of the external circumferential groove with respect to a vertical direction for collecting the oil recovered by the external circumferential groove, the external circumferential groove being open towards the rotation axis while being delimited by a bottom extended by upstream and downstream lateral walls, the downstream lateral wall that is opposite to the seal along the rotation axis terminating in a gutter opening towards the bottom.