INTERNALLY COOLED SEAL RUNNER

摘要

A contact seal assembly for a shaft of a gas turbine engine includes a seal runner adapted to be connected to the shaft and rotatable relative to a carbon ring. The seal runner includes concentric inner and outer annular portions radially spaced apart to define at least one internal fluid passage between the inner and outer annular portions of the seal runner.

主权项

1. A contact seal assembly for a shaft of a gas turbine engine, comprising:
one or more carbon ring segments mounted in a fixed position within a housing; and an annular seal runner adapted to be connected to the shaft of the gas turbine engine and rotatable relative to the carbon ring segments, the seal runner being disposed adjacent to and radially inwardly from the carbon ring segments and abutting thereagainst during rotation of the seal runner to form a contact interface between the seal runner and the carbon ring segments which forms a substantially fluid tight seal; the seal runner comprising concentric inner and outer annular portions which are radially spaced apart to define therebetween at least one internal fluid passage, said fluid passage defining a tortuous fluid flow path through the fluid passage and being adapted to receiving cooling fluid therein for cooling the seal runner from within, and the seal runner having one or more oil scoops integrally formed in one of the inner and outer annular portions and disposed in fluid flow communication with the internal fluid passage, the oil scoop feeding cooling oil into said fluid passage.