Ceramic component for a turbomachine

Patent metadata

Field	Value
Publication number	US-10024192-B2
Application number	US-201414322515-A
Country	US
Kind code	B2
Filing date	Jul 2, 2014
Priority date	Jul 9, 2013
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A ceramic component for a turbomachine, the ceramic component ( 1 ) being configured to be destroyed in response to a contacting with another component ( 2 ) of the turbomachine that moves relative to the ceramic component ( 1 ). A turbomachine component pairing and a turbomachine including such a ceramic component.

First claim

What is claimed is:

1. A sealing section for a turbomachine comprising:
a brush seal having brushes for contacting a shaft;
a holding device holding the brush seal, the holding device extending radially to back brushes of the brush seal; and
a ceramic component contacting the holding device and extending radially beyond the holding device, a section of the ceramic component designed to be destroyed in response to contact with the shaft;
wherein the section is a U-shaped section and wherein legs of the U-shaped section extend axially parallel to an axis of rotation.

2. The sealing section as recited in claim 1 wherein the holding device and the ceramic component are connected at a connection radially outward of the brush seal.

3. The sealing section as recited in claim 2 wherein holding device has a front and a rear and the brush seal is located partially between the front and the rear, the rear backing the brush seal.

4. The sealing section as recited in claim 1 wherein the section includes at least one weakened zone having a reduced material thickness compared to a rest of the ceramic component.

5. The sealing section as recited in claim 1 wherein the ceramic component at least partially bounds a passage opening provided for the shaft.

6. The sealing section as recited in claim 1 wherein holding device has a front and a rear and the brush seal is located partially between the front and the rear, the rear backing the brush seal.

7. The sealing section as recited in claim 6 wherein the front, the rear and the ceramic plate are connected at a connection radially outwardly of the brush seal.

8. The sealing section as recited in claim 1 wherein the ceramic component includes a monocrystalline ceramic material or a fiber-reinforced ceramic material.

9. The sealing section as recited in claim 1 wherein the ceramic component is spaced apart from the brushes.

10. A turbomachine comprising the sealing section as recited in claim 1 and the shaft.

11. A method of providing sealing for a shaft of a turbomachine comprising:
providing the sealing section as recited in claim 1 so as to permit sealing of the shaft via the brush seal, the ceramic component being designed to permit the ceramic component to fracture at the section upon contact with the shaft.

12. A sealing section for a turbomachine comprising:
a brush seal having brushes extending radially inwardly;
a holding device holding the brush seal, the holding device extending radially to back brushes of the brush seal; and
a ceramic component contacting the holding device but not the brush seal and extending radially beyond the holding device and having a U-shaped section, wherein legs of the U-shaped section extend axially parallel to an axis of rotation of the shaft.

Assignees

• MTU Aero Engines AG
• Mtu Aero Engines Ag & Co Kg

Inventors

• Schinko Norbert
• Sangl Janine
• Klaen Stephan
• Schlemmer Markus

Classifications

• F01D11/00

  Preventing or minimising internal leakage of working-fluid, e.g. between stages (sealings in general F16J {; sealing arrangements for transition ducts of combustor cans F01D9/023}) · CPC title

• F05D2240/60

  Shafts · CPC title

• F05D2240/56

  Brush seals · CPC title

• F05D2300/6033

  Ceramic matrix composites [CMC] · CPC title

• F05D2300/50

  Intrinsic material properties or characteristics · CPC title