The curved combustion chamber of a turbine engine

Abstract

The invention relates to a turbine engine combustion chamber comprising: an outer annular casing; a flame tube (20) connected to the outer casing, said flame tube (20) comprising an inner annular wall (20b) and an outer annular wall (20a ), the inner annular wall and the outer annular wall limit the first radial inlet portion of the flame tube and the second axial outlet portion of the flame tube, the flame tube also includes a chamber base (30) at the entrance of the flame tube (20) and a fuel injection system (40'), the fuel injection system being configured to inject fuel into the flame tube through the inlet of the flame tube. The injection system includes an injector axis (AA') parallel to the first section and an air collection tube (40'd) configured to move air towards the spiral in the injection system (40'). The helix is ​​arranged around an implant axis parallel to the injector axis. The air collection tube comprises a circular section surrounding the axis of the injector. An opening forming an air inlet of the collecting duct extends from the circular portion. The opening is configured to rotate the incoming air flow about the implant axis so that the air flow is supplied to the helix.

Description

technical field [0001] The present invention relates to the field of combustion chambers for turbine engines, and more particularly to the construction and attachment of flame tubes in combustion chambers of turbine engines. Background technique [0002] in a known manner and with reference to figure 1 , downstream of the high-pressure compressor (not shown), the turbine engine comprises a combustion chamber delimited by a concentric, inner rotationally symmetric casing 1b and an outer rotationally symmetric casing 1a. [0003] The combustion chamber includes a flame tube 2 disposed in a space defined by the inner casing 1b and the outer casing 1a. [0004] The flame tube 2 is delimited by an inner wall 2 b called the inner sleeve and an outer wall 2 a called the outer sleeve and a chamber base plate 3 serving as a support for the injector 4 . [0005] In addition, the combustion chamber also includes a fairing 5 placed in front of the chamber base to partially cover the i...

AI Technical Summary

Problems solved by technology

However, it has the main disadvantage of the high surface-to-volume ratio, which makes cooling of the walls of the flame tubes difficult and hinders their life

[0008] On the other hand, the problem with the direct axial chamber type is that the axial space required for the flame tube is quite large

[0009] Another problem is that the attachment of the cowling, the inner wall 2b and the outer wall 2a and the base plate is subject to the vibrations of the turbine engine and the thermal expansion of the sub-components of the chamber module, which may impair its ability to operate, making it often complicated to provide advanced vibration and thermal compensation system

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