초록 ▼

A seal assembly has a first seal member, a second seal member, and a third seal member. The first seal member has a wear surface that contacts a first wall of the cavity at two sealing locations. The second seal member has a wear surface that contacts a second wall of the cavity at two sealing locat

A seal assembly has a first seal member, a second seal member, and a third seal member. The first seal member has a wear surface that contacts a first wall of the cavity at two sealing locations. The second seal member has a wear surface that contacts a second wall of the cavity at two sealing locations. The third seal member extends between and resiliently connects the first seal member to the second seal member.

대표청구항 ▼

1. A seal assembly for use in a cavity of a gas turbine engine, the cavity having a first wall, a second wall and a third wall, the seal assembly comprising: a first seal member having an undulating wear surface that contacts the first wall of the cavity at a first inner sealing surface and a first

1. A seal assembly for use in a cavity of a gas turbine engine, the cavity having a first wall, a second wall and a third wall, the seal assembly comprising: a first seal member having an undulating wear surface that contacts the first wall of the cavity at a first inner sealing surface and a first outer sealing surface, and the third wall of the cavity at a third sealing surface;a second seal member having an undulating wear surface that contacts the second wall of the cavity at a second inner sealing surface and a second outer sealing surface, and the third wall of the cavity at a fourth sealing surface; anda third seal member attached to the first seal member at a first joint located between the first inner sealing surface and the first outer sealing surface, and attached to the second seal member at a second joint located between the second inner sealing surface and the second outer sealing surface, such that the third seal member forms a resilient connection between the first seal member and the second seal member, wherein the first seal member and the second seal member are both thicker than the third seal member. 2. The seal assembly of claim 1, wherein the seal assembly is annular. 3. The seal assembly of claim 1, wherein the first joint location is positioned to control contact pressure at the first inner sealing surface and the first outer sealing surface of the first seal member. 4. The seal assembly of claim 1, wherein the third seal member, the first joint, and the second joint define an internal chamber having a first pressure and an external chamber having a second pressure. 5. A seal assembly for a cavity having a first axial wall, a second axial wall and a third wall, the seal assembly comprising: a first seal member having a wear surface that contacts the first axial wall of the cavity at two sealing locations, wherein the first seal member further contacts the third wall of the cavity at a third sealing location;a second seal member having a wear surface that contacts the second axial wall of the cavity at two sealing locations, wherein the second seal member further contacts the third wall of the cavity at a fourth location; anda third seal member extending between and resiliently connecting the first seal member to the second seal member without contacting any wall of the cavity, wherein the third seal member has a wavy configuration and comprises a metallic material. 6. The seal assembly of claim 5, wherein the first sealing member has a first inner sealing surface and a first outer sealing surface along the first axial wall, and the second sealing member has a second inner sealing surface and second outer sealing surface along the second axial wall. 7. The seal assembly of claim 6, wherein the first inner sealing surface and the second inner sealing surface are in a first plane, and the second inner sealing surface and the second outer sealing surface are in a second plane. 8. The seal assembly of claim 7, wherein the third seal member is attached to the first seal member at a first joint, the first joint located between the first inner sealing surface and the first outer sealing surface, and the third seal member is attached to the second seal member at a second joint, the second joint located between the second inner sealing surface and the second outer sealing surface. 9. The seal assembly of claim 8, wherein the first joint and the second joint are in a third plane. 10. The seal assembly of claim 9, wherein the seal assembly has bilateral symmetry about a fourth plane that interests a center of the third seal member. 11. The seal assembly of claim 5, wherein the first axial wall and the third wall of the cavity are perpendicular to one another. 12. A method of sealing a cavity in a gas turbine engine, the cavity including a first wall, a second wall and a third wall, the method comprising: attaching a first seal member to a second seal member with a third seal member, the third sealing member having an undulating configuration and comprising a metallic material;contacting the cavity at three or more sealing surfaces with the first sealing member, wherein at least two of the sealing surfaces of the first sealing member contact the first wall of the cavity and a third of the sealing surfaces of the first sealing member contacts the third wall of the cavity; andcontacting a second wall of the cavity at three or more sealing surfaces with the second sealing member, wherein at least two of the sealing surfaces of the second sealing member contact the first wall of the cavity and a third of the sealing surfaces of the second sealing member contacts the third wall of the cavity. 13. The method of claim 12, wherein attaching the first seal member to the second seal member with the third sealing member includes: forming a first joint between the third seal member and the first seal member; andforming a second joint between the third seal member and the second seal member. 14. The method of claim 13, wherein the first joint is located between the two sealing surfaces on the first sealing member, and the second joint is located between the two sealing surfaces on the second sealing member.