Wrapped dog bone seal

Patent metadata

Field	Value
Publication number	US-2016298476-A1
Application number	US-201415038570-A
Country	US
Kind code	A1
Filing date	Oct 24, 2014
Priority date	Dec 12, 2013
Publication date	Oct 13, 2016
Grant date	—

Abstract

A seal for a gas turbine engine comprises a seal body extending from a first end to a second end. A wrap extends at least partially around the first and second ends of the seal body. A gas turbine engine is also disclosed.

First claim

1 . A seal for a gas turbine engine comprising:
a seal body extending from a first end to a second end; and a wrap extending at least partially around the first and second ends of the seal body.

2 . The seal according to claim 1 wherein the seal body has a dog bone cross-sectional shape.

3 . The seal according to claim 1 wherein the seal body includes a central body portion extending between the first and second ends and defined by a first cross-sectional area, and wherein the first and second ends are defined by a second cross-sectional area that is greater than the first cross-sectional area.

4 . The seal according to claim 3 wherein the wrap extends between first and second wrap ends, and wherein the wrap extends along the central body portion with the first wrap end wrapping at least partially around the first end of the seal body and the second wrap end wrapping at least partially around the second end of the seal body.

5 . The seal according to claim 4 wherein the first and second wrap ends extend around the first and second ends by at least sixty degrees.

6 . The seal according to claim 5 wherein the first and second wrap ends extend around the first and second ends within a range of 60 to 180 degrees.

7 . The seal according to claim 5 wherein the first and second wrap ends extend around the first and second ends within a range of 60 to 120 degrees.

8 . The seal according to claim 1 wherein the seal body comprises one of a full or split ring seal.

9 . The seal according to claim 1 wherein the wrap comprises one of a full or split ring.

10 . The seal according to claim 1 wherein the wrap is comprised of sheet metal.

11 . The seal according to claim 1 wherein the first end of the seal body is configured for engagement with a blade outer air seal and the second end of the seal body is configured for engagement with a vane platform, and wherein the seal body is moveable relative to the wrap.

12 . A gas turbine engine component comprising:
blade outer air seal; a vane platform positioned adjacent to the blade outer air seal; and a seal assembly extending between the vane platform and the blade outer air seal, the seal assembly comprising a dog bone seal having first and second seal ends, and a wrap at least partially surrounding the first and second seal ends.

13 . The gas turbine engine component according to claim 12 wherein the wrap comprises a piece of sheet metal having a first wrap end extending around the first seal end of the dog bone seal and a second wrap end extending around the second seal end of the dog bone seal.

14 . The gas turbine engine component according to claim 13 wherein the first and second wrap ends extend around the first and second seal ends by at least sixty degrees.

15 . The gas turbine engine component according to claim 14 wherein the first and second wrap ends extend around the first and second seal ends within a range of 60 to 180 degrees.

16 . The gas turbine engine component according to claim 14 wherein the first and second wrap ends extend around the first and second seal ends within a range of 60 to 120 degrees.

17 . The gas turbine engine component according to claim 13 wherein the wrap is in direct abutting engagement with the dog bone seal, and wherein the first wrap end is in direct abutting engagement with the blade outer air seal and the second wrap end is in direct abutting engagement with the vane platform.

18 . The gas turbine engine component according to claim 12 wherein the vane and blade outer air seal are located within a turbine section of the gas turbine engine.

19 . The gas turbine engine component according to claim 12 wherein the dog bone seal is comprised of metal.

20 . The gas turbine engine component according to claim 19 wherein the wrap comprises a piece of sheet metal.

Assignees

• United Technologies Corp

Inventors

• Lutjen Paul M
• Rogers Mark J

Classifications

• F05D2230/54

  by sheet metal manufacturing · CPC title

• F01D9/04

  forming ring or sector · CPC title

• F05D2220/32

  in gas turbines · CPC title

• F05D2240/11

  Shroud seal segments · CPC title

• F05D2250/70

  Shape · CPC title