Flexible finger seal for sealing a gap between turbine engine components

Patent metadata

Field	Value
Publication number	US-9670791-B2
Application number	US-201414772194-A
Country	US
Kind code	B2
Filing date	Mar 4, 2014
Priority date	Mar 4, 2013
Publication date	Jun 6, 2017
Grant date	Jun 6, 2017

Abstract

An assembly for a turbine engine includes a turbine engine first component, a turbine engine second component and a flexible seal that is attached to the first component. The flexible seal at least partially seals a gap between the first component and the second component. The flexible seal includes a mount and a finger seal that sealingly engages the second component. The mount includes a boss that sealingly engages the first component.

First claim

What is claimed is:

1. An assembly for a turbine engine, comprising:
a turbine engine first component;
a turbine engine second component; and
a flexible seal attached to the first component, the flexible seal at least partially sealing a gap between the first component and the second component;
wherein the flexible seal includes a mount and a finger seal that sealingly engages the second component, wherein the mount includes a base and a boss sealingly engaged between the first component and the base, wherein the finger seal is connected to and projects out from the base, and wherein at least the base and the finger seal are included in a monolithic body.

2. The assembly of claim 1 , further comprising a fastener that attaches the mount to the first component, and extends through the boss.

3. The assembly of claim 2 , wherein
the boss comprises a first boss, and the mount further includes a second boss;
the first boss and the second boss are arranged on opposing sides of the base;
the fastener further extends through the base and the second boss; and
the first boss and the second boss are sandwiched between a head of the fastener and the first component.

4. The assembly of claim 2 , wherein the boss comprises a washer that is bonded to the base.

5. The assembly of claim 2 , further comprising:
a washer sealingly engaged between a flange and a first shoulder;
wherein the first component includes the flange, and the fastener includes the first shoulder and a second shoulder that sealingly engages the mount; and
wherein the fastener attaches the mount to the flange, and extends through mount, the flange and the washer between the first shoulder and the second shoulder.

6. The assembly of claim 2 , further comprising:
a second fastener that attaches the mount to the first component;
wherein the fastener has a shaft diameter that is approximately equal to a shaft diameter of the second fastener;
wherein the fastener extends through a first aperture in the first component, and the second fastener extends through a second aperture in the first component; and
wherein the first aperture has a diameter that is different than a diameter of the second aperture.

7. The assembly of claim 2 , further comprising:
a first flange and a second flange;
wherein the first component includes the first flange, and the first flange is arranged between the second flange and the mount; and
wherein the fastener connects the first flange, the second flange and the mount together.

8. The assembly of claim 1 , wherein the finger seal is cantilevered from the mount.

9. The assembly of claim 1 , wherein the flexible seal is one of a plurality of flexible seals that are attached to the first component and arranged circumferentially around an axis.

10. The assembly of claim 9 , wherein a first of the flexible seals engages a second of the flexible seals through a seal joint.

11. The assembly of claim 1 , further comprising:
a gasket sealingly engaged between the first component and the mount;
wherein the mount extends radially between a first end and a second end; and
wherein the gasket is located radially between the first end and the boss.

12. The assembly of claim 11 , further comprising:
a second gasket sealingly engaged between the first component and the mount;
wherein the second gasket is located radially between the second end and the boss.

13. The assembly of claim 11 , wherein
the mount further includes a retainer;
a gap extends axially between the first component and the retainer; and
the gasket is arranged radially between the boss and the retainer.

14. The assembly of claim 1 , wherein the first component comprises a first turbine engine case, and the second component comprises a second turbine engine case.

15. The assembly of claim 1 , wherein the first component comprises a blade outer air seal, and the second component comprises a turbine engine case.

16. An assembly for a turbine engine, comprising:
a turbine engine first component including a flange;
a turbine engine second component;
a flexible seal at least partially sealing a gap between the first component and the second component, wherein the flexible seal includes a mount and a finger seal that sealingly engages the second component and is cantilevered from the mount, wherein the mount includes a base and a washer that is sealingly engaged between the flange and the base, and wherein at least the base and the finger seal are formed together as a monolithic body; and
a fastener that attaches the mount to the flange, the fastener including a bolt and a nut threaded onto the bolt, wherein the bolt extends through the washer and the base.

17. The assembly of claim 16 , wherein the washer is bonded to the base and forms a boss.

18. An assembly for a turbine engine, comprising:
a flexible seal extending circumferentially at least partially around an axis, and including a mount and a finger seal;
the mount including a base, a plurality of bosses and a plurality of fastener apertures, wherein the base extends radially between an inner end and an outer end, the bosses are arranged circumferentially around the axis, and each of the fastener apertures extends axially through the base and a respective one of the bosses; and
the finger seal is arranged at the inner end, and is cantilevered from the mount;
wherein at least the mount and the finger seal are integrally formed together as a monolithic body.

19. The assembly of claim 18 , wherein
the mount further includes a retainer and a channel that extends radially between a first of the bosses and the retainer; and
the retainer has an axial thickness that is less than an axial thickness of the first of the bosses.

20. The assembly of claim 19 , wherein
the mount further includes a second retainer and a second channel that extends radially between the first of the bosses and the second retainer; and
the second retainer has an axial thickness that is less than the axial thickness of the first of the bosses.

Assignees

• United Technologies Corp

Inventors

• Broomer Mark
• Roy Thill Carson A
• Davis Timothy M
• Cherolis Anthony P
• Hazzard Robert L
• Mcgarrah Craig R
• Choung Conway
• Keene Russell E

Classifications

• F01D11/005

  Sealing means between non relatively rotating elements · CPC title

• F01D11/003

  by packing rings; Mechanical seals · CPC title

• F01D25/246

  Fastening of diaphragms or stator-rings · CPC title

• F01D9/02

  Nozzles; Nozzle boxes; Stator blades; Guide conduits {, e.g. individual nozzles (nozzle boxes F01D9/047)} · CPC title

• F01D11/08 Primary

  for sealing space between rotor blade tips and stator (specially-shaped blade tips therefor F01D5/20) · CPC title