Compliant rail hanger

Patent metadata

Field	Value
Publication number	US-2016290140-A1
Application number	US-201615066701-A
Country	US
Kind code	A1
Filing date	Mar 10, 2016
Priority date	Mar 31, 2015
Publication date	Oct 6, 2016
Grant date	—

Abstract

A gas turbine engine assembly includes a supporting component and a supported component. The supporting component includes features engaged by the supported component. The supported component comprises ceramic-containing materials.

First claim

What is claimed is:

1 . A turbine shroud comprising
a plurality of carrier segments comprising metallic materials and arranged circumferentially adjacent to one another around an axis, each carrier segment including a body and a bracket that extends inwardly in a radial direction from the body toward the axis, and a plurality of blade track segments comprising ceramic-matrix composite materials and arranged circumferentially adjacent to one another around the axis, each blade track segment including a runner and at least one hanger that extends outwardly in the radial direction from the runner, wherein at least one of the hangers of each blade track segment engages with the bracket of at least one carrier segment to couple the plurality of blade track segments to the carrier segments, the bracket of each carrier segment is formed to include a plurality of circumferentially spaced apart fingers extending generally axially from the body and arranged to be engaged by the hangers of the blade track segments, and the fingers are configured to flex inward in the radial direction when engaged by the hangers of the blade track segments.

2 . The turbine shroud of claim 1 , further comprising a plurality of retainer segments comprising metallic materials and arranged circumferentially adjacent to one another around an axis, each retainer segment including a body and a bracket that extends inwardly in a radial direction from the body toward the axis, wherein the bracket of each retainer segment is formed to include a plurality of circumferentially spaced apart fingers extending generally axially from the body of the retainer and arranged to be engaged by the hangers of the blade track segments, and the fingers are configured to flex inward in the radial direction when engaged by the hangers of the blade track segments.

3 . The turbine shroud of claim 1 , wherein each of the carrier segments further includes a stop wall coupled to the body of the carrier segment radially inward of the plurality of fingers.

4 . The turbine shroud of claim 3 , wherein each stop wall is spaced apart from the plurality of fingers such that a flex gap is positioned between the stop wall and the plurality of fingers.

5 . The turbine shroud of claim 4 , wherein each stop wall is configured to engage with the plurality of fingers to block the plurality of fingers from flexing radially inward of the stop wall.

6 . The turbine shroud of claim 1 , wherein each of the fingers includes a free end spaced apart from the body and a radially outer surface extending between the body and the free end and the radially outer surface is formed to include a contact feature positioned to contact the hangers of the blade track segments.

7 . The turbine shroud of claim 6 , wherein the contact feature is a lip extending radially outward from the free end of the finger.

8 . The turbine shroud of claim 6 , wherein the contact feature is a convex wall extending axially along and radially outward from the radially outer surface of the finger.

9 . The turbine shroud of claim 6 , wherein the contact feature is a convex wall extending circumferentially along and radially outward from the radially outer surface of the finger.

10 . A turbine shroud comprising
a plurality of carrier segments comprising metallic materials and arranged circumferentially adjacent to one another around an axis, each carrier segment including a body and a slot formed along a radially inner portion of the body, and a plurality of blade track segments comprising ceramic-matrix composite materials and arranged circumferentially adjacent to one another around the axis, each blade track segment including a runner and at least one attachment post that extends outwardly in a radial direction from the runner, wherein the attachment post of each blade track segment engages with the slot of at least one carrier segment to couple the plurality of blade track segments to the carrier segments, the slot of each carrier segment is formed to include a plurality of circumferentially spaced apart fingers and arranged to be engaged by the attachment posts of the blade track segments, and the fingers are configured to flex inward in the radial direction when engaged by the attachment posts of the blade track segments.

11 . The turbine shroud of claim 10 , wherein each of the slots includes a circumferentially extending outer wall, a first stop wall extending radially inward from the outer wall, and a second stop wall spaced apart from the first stop wall and extending radially inward from the outer wall,
wherein a first portion of the plurality of fingers are positioned along an intersection of the outer wall and the first stop wall and a second portion of the plurality of fingers are positioned along an intersection of the outer wall and the second stop wall, and wherein the first and second portions of the plurality of fingers extending radially inward from the outer wall and toward one another.

12 . The turbine shroud of claim 11 , wherein each of the fingers includes a free end spaced apart from the first and second stop walls and an engagement surface extending between the outer wall and the free end.

13 . The turbine shroud of claim 12 , wherein the first and second stop walls are configured to engage with the plurality of fingers to block the plurality of fingers from flexing past the first and second stop walls.

14 . The turbine shroud of claim 10 , wherein the plurality of fingers are each formed to include a contact feature positioned to contact the attachment posts of the blade track segments.

15 . The turbine shroud of claim 14 , wherein the contact feature is a lip extending radially outward from a free end of the finger.

16 . The turbine shroud of claim 14 , wherein the contact feature is a convex wall extending axially along and radially outward from radially outer surface of the finger.

17 . The turbine shroud of claim 14 , wherein the contact feature is a convex wall extending circumferentially along and radially outward from the radially outer surface of the finger.

18 . A method of assembling a turbine shroud comprising arranging a plurality of carrier segments comprising metallic materials circumferentially adjacent to one another around an axis, each carrier segment including a body and a bracket that extends inwardly in a radial direction from the body toward the axis,
arranging a plurality of blade track segments comprising ceramic-matrix composite materials circumferentially adjacent to one another around the axis, each blade track segment including a runner and at least one hanger that extends outwardly in the radial direction from the runner, and engaging the hangers of the blade track segments with the brackets of the carrier segments to couple the blade track segments with the carrier segments, wherein the bracket of each carrier segment is formed to include a plurality of circumferentially spaced apart fingers extending generally axially from the body and arranged to be engaged by the hangers of the blade track segments, and the fingers are configured to flex inward in the radial direction when engaged by the hangers of the blade track segments.

Assignees

• Rolls Royce Corp
• Rolls Royce Nam Tech Inc

Inventors

• Thomas David J
• Lamusga Joseph P
• Freeman Ted J
• Lazur Andrew J

Classifications

• F01D11/08 Primary

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

• F01D25/246

  Fastening of diaphragms or stator-rings · CPC title

• F04D29/526

  Details of the casing section radially opposing blade tips (ducts F04D29/545) · CPC title

• F05D2260/30

  Retaining components in desired mutual position · CPC title

• F05D2240/11

  Shroud seal segments · CPC title