US 2016/0258310 A1 · SEAL ARRANGEMENT

Abstract

A turbine secondary air system seal arrangement (62). The arrangement comprises a first seal land (70) facing radially inwardly; a second seal land (80) facing radially outwardly; and first labyrinth seal teeth (76) directed radially outwardly to seal against the first seal land (70). Also second labyrinth seal teeth (78) directed radially inwardly to seal against the second seal land (80). The first seal land (70) is configured to move radially relative to the second seal land (80) or the first seal teeth (76) are configured to move radially relatively to the second seal teeth (78) to accommodate differential movement of the lands (70, 80) and teeth (76, 78) during use of the seal arrangement (62).

Claims20

Dependent claims

A seal arrangement (62) comprising:

a first seal surface (72) facing a first direction;
a second seal surface (76) facing a second direction, the second direction opposed to the first direction;
the first and second seal surfaces (72, 76) configured to form a seal together;
a third seal surface (78) facing the first direction;
a fourth seal surface (82) facing the second direction;
the third and fourth seal surfaces (78, 82) configured to form a seal together;
wherein the first and fourth seal surfaces (72, 82) are configured to move relative to each other to accommodate differential movement of the seal surfaces during use of the seal arrangement (62).

4 more elements

Dependencies are inferred from the claim text.

Seal arrangement

Life of this patent

Seal arrangement

Life of this patent

Abstract

Claims20