Seal assembly for a turbo machine
An aspect of the present disclosure is directed to a seal assembly. The seal assembly includes a fluid bearing wall including a bearing face defining a fluid opening through the fluid bearing wall. The seal assembly further includes a tilt member is extended from and attached to the fluid bearing wall. The tilt member defines a fluid passage therethrough in fluid communication with the fluid opening at the bearing face of the fluid bearing wall. The seal assembly still further includes a seal body surrounding the tilt member. A cavity is defined between the tilt member and the seal body. The seal assembly further includes a spring member coupled to the seal body and the fluid bearing wall. A passage is defined between the fluid bearing wall and the seal body.
1. A seal assembly, the seal assembly comprising:
a fluid bearing wall comprising a bearing face, wherein the bearing face defines a fluid opening through the fluid bearing wall;
a tilt member extended from the fluid bearing wall and attached thereto, wherein the tilt member defines a fluid passage therethrough in fluid communication with the fluid opening at the bearing face of the fluid bearing wall;
a seal body surrounding the tilt member, wherein a cavity is defined between the tilt member and the seal body; and
a spring member coupled to the seal body and the fluid bearing wall, wherein a passage is defined between the fluid bearing wall and the seal body; and wherein the cavity and the passage are in fluid communication.
2. The seal assembly of claim 1 , wherein the tilt member further comprises a tilt body surrounded within the seal body.
3. The seal assembly of claim 2 , wherein the tilt body of the tilt member defines a circular, ovular, or elliptical cross sectional area.
4. The seal assembly of claim 2 , wherein the tilt body is defined at a distal end of the tilt member from the fluid bearing wall.
5. The seal assembly of claim 2 , wherein the tilt member comprises a shaft attached to the fluid bearing wall and the tilt body.
6. The seal assembly of claim 5 , wherein a gap is defined between the shaft of the tilt member and the seal body.
7. The seal assembly of claim 5 , wherein a seal member is extended from the shaft.
8. The seal assembly of claim 7 , wherein the seal member is disposed within the seal body between the tilt body and the fluid bearing wall.
9. The seal assembly of claim 1 , wherein the fluid bearing wall and the tilt member are together detachably coupled to the seal body such as to enable movement of the fluid bearing wall and the tilt member relative to the seal body.
10. The seal assembly of claim 9 , wherein the spring member and the fluid bearing wall are integrally attached together, and wherein the seal body is detachable from the integral spring member and the fluid bearing wall.
11. The seal assembly of claim 9 , wherein the seal body and the spring member are integrally attached together, and wherein the fluid bearing wall is detachable from the integral spring member and seal body.
12. The seal assembly of claim 1 , wherein the fluid bearing wall defines a plenum between the fluid bearing face and an aft face of the fluid bearing wall, and wherein the fluid bearing wall comprises a seal disposed in the plenum.
13. The seal assembly of claim 1 , wherein the seal body defines a fluid feed opening in fluid communication with the fluid passage at the tilt member.
14. A turbo machine, the turbo machine comprising:
a rotor assembly rotatable relative to a centerline axis, wherein the rotor assembly comprises a rotor face extended radially and circumferentially relative to the centerline axis;
a stator structure adjacent to the rotor assembly; and
a seal assembly attached to the stator structure, wherein the seal assembly comprises:
a fluid bearing wall comprising a bearing face, wherein the bearing face and the rotor face together define a clearance therebetween, and wherein the bearing face defines a fluid opening through the fluid bearing wall in fluid communication with the clearance;
a tilt member extended from the fluid bearing wall and attached thereto, wherein the tilt member defines a fluid passage therethrough in fluid communication with the fluid opening at the bearing face of the fluid bearing wall;
a seal body surrounding the tilt member, wherein a cavity is defined between the tilt member and the seal body; and
a spring member coupled to the seal body and the fluid bearing wall, wherein a passage is defined between the fluid bearing wall and the seal body; and wherein the cavity and the passage are in fluid communication.
15. The turbo machine of claim 14 , wherein the seal assembly further comprises:
a connecting member attaching together the fluid bearing wall and the seal body, wherein the connecting member is configured to maintain a substantially proportional clearance between the rotor assembly and the fluid bearing wall.
16. The turbo machine of claim 15 , wherein the fluid bearing wall and the tilt member are together detachably coupled to the seal body such as to enable rotation of the tilt member relative to the seal body.
17. The turbo machine of claim 14 , wherein the tilt member further comprises a tilt body surrounded within the seal body at a distal end of the tilt member from the fluid bearing wall.
18. The turbo machine of claim 17 , wherein the tilt member comprises a shaft attached to the fluid bearing wall and the tilt body, and wherein a gap is defined at an outlet between the passage and the cavity, and wherein the gap is between the shaft of the tilt member and the seal body.
19. The seal assembly of claim 18 , wherein a seal member is extended from the shaft, and wherein the seal member is disposed within the seal body between the tilt body and the fluid bearing wall.