CMC shroud support system

Patent metadata

Field	Value
Publication number	US-10309244-B2
Application number	US-201415102370-A
Country	US
Kind code	B2
Filing date	Dec 4, 2014
Priority date	Dec 12, 2013
Publication date	Jun 4, 2019
Grant date	Jun 4, 2019

Abstract

A shroud and shroud hanger are provided wherein at least the shroud is formed of ceramic matrix composite material. The shroud and hanger extend in a circumferential direction. A generally C-shaped clip extends radially to retain the hanger and shroud together.

First claim

What is claimed is:

1. A segmented shroud assembly, comprising:
a shroud hanger which extends in a circumferential direction between first and second slash faces and has an axial dimension, a cavity disposed between an axially forward end and an axially rearward end and extending circumferentially, at least one of the first and second slash faces having a recess defined therein;
a ceramic matrix composite (CMC) shroud disposed within said cavity;
said CMC shroud having a lower wall, at least one side wall, at least one upper wall and at least a partially hollow interior; and,
a c-clip connecting said shroud hanger and said CMC shroud;
said c-clip disposed at an end of said shroud hanger and engaging the recess and a lower surface of said upper wall.

2. The segmented shroud assembly of claim 1 , said c-clip having an upper rib for engaging the recess of said shroud hanger and a lower rib for engaging said CMC shroud.

3. The segmented shroud assembly of claim 1 further comprising a baffle positioned within said at least partially hollow interior.

4. The segmented shroud assembly of claim 1 , said recess formed to allow said c-clip to fit flush with a slash face of said shroud hanger.

5. The segmented shroud assembly of claim 1 , said CMC shroud having an opening in said upper wall.

6. The segmented shroud assembly of claim 5 , said opening being centered in the upper wall of the CMC shroud, thereby creating spaced-apart first and second upper wall sections, the first upper wall section being disposed adjacent a first end of the CMC shroud and the second upper wall section being disposed adjacent to a second end of the CMC shroud.

7. The segmented shroud assembly of claim 6 further comprising a second opening in the upper wall, the second opening being disposed adjacent to at least one of the first and second ends of said shroud.

8. The segmented shroud assembly of claim 7 further comprising a support depending from one of said first upper wall section and said second upper wall section.

9. The segmented shroud assembly of claim 8 , said support having a width in a circumferential dimension which is greater than a width of said one of said first upper wall section and said second upper wall section.

10. The segmented shroud assembly of claim 5 further comprising said opening being at a circumferential end of said upper wall.

11. The segmented shroud assembly of claim 1 , said shroud having a spacer disposed on said at least one upper wall.

12. The segmented shroud assembly of claim 1 , said c-clip limiting motion of said shroud in a radial direction.

Assignees

• Gen Electric

Inventors

• Shapiro Jason David
• Doughty Roger Lee
• Franks Michael John

Classifications

• Y02T50/60

  Efficient propulsion technologies, e.g. for aircraft · CPC title

• F01D9/04

  forming ring or sector · CPC title

• F02C3/04

  having a turbine driving a compressor (power transmission arrangements F02C7/36; control of working fluid flow F02C9/16) · CPC title

• Y02T50/672

  Cross-Sectional Technologies · mapped topic

• F01D25/24

  Casings (modified for heating or cooling F01D25/14); Casing parts, e.g. diaphragms, casing fastenings (casings for rotary machines or engines in general F16M {; special arrangements in stators dealing with breaking-off of part of rotor F01D21/045}) · CPC title