Engine assembled seal
A system for creating a seal between a damper and a platform of a turbine engine component includes a turbine engine component having an airfoil portion, a platform, and a fir tree for joining the turbine engine component to a rotor, a damper located in an area beneath the platform, a seal having a sealing surface which seats against an underside of the platform, which seal has a seal retention feature which bends into contact with an underside of the damper, and which seal with the seal retention feature has a center of gravity which allows the seal retention feature to bend up as result of rotational movement of the rotor. A method for creating the seal is also described.
1. A method for creating a seal between a platform portion of a turbine engine component and a damper, said method comprising the steps of:
providing a damper having a downwardly extending leg and a hole in said leg;
providing a seal having a seal retention feature;
positioning said seal against a face of said damper and passing said seal retention feature through said hole; and
bending said seal retention feature so that said seal retention feature positions itself in contact with an underside of said damper, said bending step comprising rotating a rotor to which said turbine engine component is attached at a speed which causes said seal retention to bend and move into said contact with said underside of said damper.
2. The method according to claim 1 , wherein said seal providing step comprises providing a seal having a center of gravity which is located forward of said downwardly extending leg.
3. The method according to claim 1 , wherein said rotating step comprises rotating said rotor at a rotational speed less than a rotational speed of said rotor at minimum idle.
4. The method according to claim 1 , wherein said rotating step comprises rotating said rotor at a rotational speed which is 50% to 80% of a rotational speed of said rotor at minimum idle.
5. The method according to claim 1 , further comprising adhering an underside of said seal to the damper and adhering both the damper and said seal to an underside of the platform.
6. The method according to claim 5 , wherein said step of adhering said seal to the damper comprises gluing said seal to said damper and said step of adhering both the damper and the seal to the underside of the platform comprises gluing said damper and said seal to said underside of the platform.
7. A system comprising:
a turbine engine component having an airfoil portion, a platform, and means for joining said turbine engine component to a rotor;
a damper located in an area beneath the platform, said damper having a downwardly extending leg with a hole;
a seal having a sealing surface which seats against an underside of said platform;
said seal having a seal retention feature which bends into contact with an underside of said damper, said seal retention feature passes through said hole in said downwardly extending leg; and
said seal with said seal retention feature having a center of gravity which allows said seal retention feature to bend up as a result of rotational movement of said rotor and said center of gravity being located forward of a front face of said downwardly extending leg.
8. The system according to claim 7 , wherein said center of gravity is located beneath said platform.
9. The system according to claim 7 , wherein said seal having said seal retention feature is formed from one of a nickel based alloy and a cobalt based alloy.
10. The system according to claim 7 , wherein said seal retention feature bends up at a rotor rotational rate less than a rotational rate for said rotor at minimum idle.
11. The system according to claim 7 , wherein said seal retention feature bends up at a rotor rotational rate which is from 50% to 80% of a rotational rate for said rotor at minimum idle.
12. The system according to claim 11 , wherein said seal retention feature bends up at a temperature less than a temperature at said minimum idle.