Aircraft gas turbine with a seal for sealing an igniter plug on the combustion chamber wall of a gas turbine

Patent metadata

Field	Value
Publication number	US-9982783-B2
Application number	US-201514811131-A
Country	US
Kind code	B2
Filing date	Jul 28, 2015
Priority date	Jul 28, 2014
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

A sealing arrangement of an igniter plug of a combustion chamber of a gas turbine, with an igniter plug passing through a recess of a combustion chamber wall, with at least one sealing ring through which the igniter plug projects and which is in sealing contact with an edge area of the recess facing away from the combustion chamber interior, wherein the sealing ring is designed in the form of a flat, annular and flexible disk.

First claim

What is claimed is:

1. A sealing arrangement of an igniter plug of a combustion chamber of a gas turbine, comprising:
a combustion chamber wall including a recess, the combustion chamber wall being annular and including a round annular outer combustion chamber wall adjacent the recess;
an igniter plug passing through the recess,
at least one sealing ring including a central bore through which the igniter plug projects, the at least one sealing ring being in sealing contact with an edge area of the recess facing away from an interior of the combustion chamber, wherein the at least one sealing ring is brought into the sealing contact by a pressure difference between an outside and an inside of the combustion chamber wall;
the at least one sealing ring including a first sealing ring and a second sealing ring, each being a flat, annular and flexible disk with the central bore;
wherein the first sealing ring includes a first plurality of slots radially arranged with respect to the central bore and spaced apart around a circumference of the first sealing ring, the first plurality of slots passing from a first flat side to an opposite second flat side of the first sealing ring;
wherein the second sealing ring includes a second plurality of slots radially arranged with respect to the central bore and spaced apart around a circumference of the second sealing ring, the second plurality of slots passing from a first flat side to an opposite second flat side of the second sealing ring;
wherein the first sealing ring and the second sealing ring are stacked one above another;
wherein the first sealing ring is circumferentially oriented with respect to the second sealing ring such that the first plurality of slots are circumferentially offset in a circumferentially non-overlapping manner with respect to the second plurality of slots, thereby preventing a direct axial path through the stacked first and second sealing rings via the first or second plurality of slots.

2. The sealing arrangement in accordance with claim 1 , wherein the at least one sealing ring is a sheet-metal component.

3. The sealing arrangement in accordance with claim 1 , wherein the plurality of sealing rings are connected to one another.

4. The sealing arrangement in accordance with claim 3 , wherein the igniter plug includes at least one contact element supporting the at least one sealing ring.

5. The sealing arrangement in accordance with claim 4 , wherein the at least one contact element is a locking ring.

6. The sealing arrangement in accordance with claim 4 , wherein the at least one contact element is an annular projection on the igniter plug.

7. The sealing arrangement in accordance with claim 4 , wherein the at least one contact element is an adapter enclosing the igniter plug and positioned between an igniter plug adapter and the combustion chamber wall.

8. The sealing arrangement in accordance with claim 1 , wherein the igniter plug includes at least one contact element supporting the at least one sealing ring.

9. The sealing arrangement in accordance with claim 8 , wherein the at least one contact element is a locking ring.

10. The sealing arrangement in accordance with claim 8 , wherein the at least one contact element is an annular projection on the igniter plug.

11. The sealing arrangement in accordance with claim 8 , wherein the at least one contact element is an adapter enclosing the igniter plug and positioned between an igniter plug adapter and the combustion chamber wall.

Assignees

• Rolls Royce Deutschland Ltd & Co Kg

Inventors

• Penz Stefan

Classifications

• F02C7/266 Primary

  Electric (sparking plugs H01T) · CPC title

• F16J15/022 Primary

  characterised by structure or material · CPC title

• F23R3/60

  Support structures; Attaching or mounting means · CPC title

• F23Q3/008

  Structurally associated with fluid-fuel burners · CPC title

• F23R3/002

  Wall structures (F23R3/02 and F23R3/007 take precedence) · CPC title