ANNULAR COMBUSTION CHAMBER OF A TURBOMACHINE

Abstract

Annular combustion chamber of a turbomachine, including an inner wall, an outer wall (28) and a chamber bottom (30) arranged between said walls in the upstream region of said chamber, in which the chamber bottom (30) is divided into several adjacent sectors (130), each sector being attached to said walls (28), these sectors (130) presenting lateral edges such that the lateral edges (130a, 130b) of two adjacent sectors overlap. More precisely, each sector (130) includes a lip (60) extending along one of its lateral edges (130a), this lip projecting relative to one of the faces of this sector and covering the lateral edge (130b) of the adjacent sector.

Description

The invention and its advantages will be better appreciated by reading the following detailed description of an example of a combustion chamber according to the invention, presented for illustrative purposes and non limitative of the invention. This description refers to the appended drawings in which:

FIG. 1 is a schematic view, in axial half cross-section, of part of a turbomachine equipped with a combustion chamber according to the invention;

FIG. 2 is a partial perspective view, seen from upstream, of the bottom of the combustion chamber in FIG. 1;

FIG. 3 is a perspective detail view of two sectors of the chamber bottom in FIG. 2, seen from upstream;

FIG. 4 is a perspective detail view of one sector of the chamber bottom in FIG. 2, seen from downstream;

Claims

1. Annular combustion chamber of a turbomachine, including an inner wall, an outer wall and a chamber bottom arranged between said walls in the upstream region of said chamber, wherein the chamber bottom is divided into several sectors, each sector being attached to said inner and outer walls, and said sectors presenting lateral edges such that the lateral edges of two adjacent sectors overlap.

2. Annular combustion chamber according to claim 1, wherein each sector includes a lip extending along one of its lateral edges, this lip projecting relative to one of the faces of this sector and covering the lateral edge of the adjacent sector.

3. Annular combustion chamber according to claim 2, wherein each sector has a central part extended by two returns attached respectively to said inner and outer walls, said lip extending substantially over the full length of the central part.

4. Annular combustion chamber according to claim 1, wherein each sector is attached to at least one wall at two points of attachment.

5. Annular combustion chamber according to claim 4, including a system of attachment of said sector to said at least one wall, which enables said two points of attachment to move closer together or further apart.

6. Annular combustion chamber according to claim 5, wherein said system of attachment corresponds to an attachment by bolting through at least one oblong hole.

7. Annular combustion chamber according to claim 1, wherein the chamber bottom is made of metal or metal alloy, whereas the walls are made of ceramic material.

8. Annular combustion chamber according to claim 1, wherein each sector of the chamber bottom is equipped with a baffle.

9. Turbomachine including a combustion chamber according to claim 1.