Heat-shield brick, combustion chamber comprising an internal, combustion chamber lining and a gas turbine

• US 6,832,484 B2
• Filed: 03/21/2003
• Issued: 12/21/2004
• Est. Priority Date: 09/22/2000
• Status: Expired due to Fees

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Hofmann, Daniel, Rettig, Uwe, Maghon, Hans, Schmahl, Milan, Taut, Christine, Jeppel, Paul-Heinz
• Primary Examiner(s): Yu, Justine R.
• Assistant Examiner(s): Rodriguez, William H.
• Application Number:
  US10/380,969
• Publication Number:
  US 20030177770A1
• Time in Patent Office: 641 Days
• Field of Search: 607/52--60, 110/336, 110/338
• US Class Current: 60/752
• CPC Class Codes: F23M 5/02 characterised by the shape of the bricks or blocks used
• CPC Class Codes: F23R 2900/00012 Details of sealing devices
• CPC Class Codes: F23R 3/002 Wall structures F23R3/02 and F23R3/007 take precedence
• CPC Class Codes: F23R 3/007 constructed mainly of ceramic components
• CPC Class Codes: F27D 1/0033 Linings or walls comprising heat shields, e.g. heat shieldsd shields protecting the charge F27D5/00
• CPC Class Codes: F27D 1/063 Individual composite bricks or blocks

Abstract

The invention relates to a heat-shield brick, in particular for lining a combustion chamber wall, comprising a hot side that can be exposed to a hot medium, a wall side that lies opposite said hot side and a peripheral side that lies adjacent to the hot side and the wall side and that has peripheral lateral face. A tensioning element, pre-stressed in the peripheral direction is provided on the peripheral side, whereby a compressive stress generated perpendicularly to the peripheral lateral face. The invention also relates to a combustion chamber comprising a combustion chamber lining, which has heat-shield bricks of this type and to a gas turbine comprising a combustion chamber.

Claims

1. A heat shield brick comprising:

a hot side which expose able to a hot medium,

a wall side opposite the hot side, and

a peripheral side which adjoins the hot side and the wall side and has a peripheral-side surface,

wherein a tension element prestressed in the peripheral direction is provided on the peripheral side, whereby a compressive stress normal to the peripheral-side surface is produced.

2. The heat shield brick as claimed in claim 1, wherein the tension element extends at least zonally in the peripheral direction.

3. The heat shield brick as claimed in claim 1, wherein a plurality of tension elements are provided.

4. The heat shield brick as claimed in claim 3, wherein at least one tension element completely encloses the peripheral-side surface.

5. The heat shield brick as claimed in claim 4, wherein the tension element encloses the peripheral-side surface several times.

6. The heat shield brick as claimed in claim 1, wherein the peripheral side has a peripheral groove in which a tension element engages.

7. The heat shield brick as claimed in claim 6, wherein at least one further peripheral groove which is at a distance from the peripheral groove is provided, a tension element engaging in the further peripheral groove.

8. The heat shield brick as claimed in one claim 1, wherein the tension element is designed as a braided or woven cord or strip.

9. The heat shield brick as claimed in claim 1, wherein the tension element is made of a ceramic material made of fiber material.

10. The heat shield brick as claimed in claim 1, wherein the tension element is at least partly adhesively bonded to the heat shield brick.

11. The heat shield brick as claimed in claim 1, wherein the heat shield brick is made of a ceramic parent material having at least a refractory ceramic therein.

12. A combustion chamber having an inner combustion chamber lining at least one heat shield bricks in accordance with claim 1.

13. A gas turbine having a combustion chamber as claimed in claim 12.

14. The heat shield brick as claimed in claim 2, wherein a plurality of tension elements are provided.

15. The heat shield brick as claimed in claim 14, wherein at least one tension element completely encloses the peripheral-side surface.

16. The heat shield brick as claimed in claim 15, wherein the tension element encloses the peripheral-side surface several times.

17. The heat shield brick as claimed in claim 2, wherein the peripheral side has a peripheral groove in which a tension element engages.

18. The heat shield brick as claimed in claim 3, wherein the peripheral side has a peripheral groove in which a tension element engages.

19. The heat shield brick as claimed in claim 4, wherein the peripheral side has a peripheral groove in which a tension element engages.

20. The heat shield brick as claimed in claim 6, wherein the peripheral side has a peripheral groove in which a tension element engages.