Turbomachine combustion chamber

Abstract

A turbine engine includes a combustion chamber, comprising two coaxial axisymmetric walls extending one inside the other and delimiting between one another an annular air-circulation, an exterior wall, and at least one injector passing through the walls via ports, wherein the injector comprises a peripheral tube connected to the walls by three connections, at least two connections being of the slideway and/or ball-joint or bellows type.

1 . A turbine engine having a combustion chamber, the combustion chamber comprising two coaxial axisymmetric walls extending one inside the other and delimiting therebetween an annular air-circulation space, and an exterior wall, and at least one injector crossing the walls via ports, wherein the injector comprises a peripheral tube that is connected to the walls by three connections, at least two connections being flexible sealed connections allowing for multidirectional clearance. 
     
     
         2 . The turbine engine of  claim 1 , wherein just one of the three connections is formed by a sealed rigid assembly. 
     
     
         3 . The turbine engine of  claim 1 , wherein the connection between the peripheral tube and an interior wall is formed by a linear annular connection having controlled leakage by way of a calibrated annular cross section. 
     
     
         4 . The turbine engine of  claim 1 , wherein the connection between the peripheral tube and an intermediate wall is formed by a bellows. 
     
     
         5 . The turbine engine of  claim 1 , wherein the connection between the peripheral tube and the exterior wall is formed by a bellows. 
     
     
         6 . The turbine engine of  claim 1 , wherein the connection between the peripheral tube and an intermediate wall of a liner is formed by a ball-joint connection, and the connection between the peripheral tube and the exterior wall of the liner is formed by a sliding ball-joint connection. 
     
     
         7 . The turbine engine of  claim 1 , wherein the connection between the peripheral tube and the exterior wall of a liner of the chamber is formed by a sliding ball-joint connection, and the connection between the peripheral tube and an intermediate wall of the liner is formed by a ball-joint connection. 
     
     
         8 . The turbine engine of  claim 1 , wherein the connection between the peripheral tube and an intermediate wall of a liner is formed by a connection having several degrees of freedom to allow for axial displacement and tangential displacement of the tube, and a tolerance for a ball joint, and the connection between the peripheral tube and the exterior wall of the liner is formed by a sealed rigid assembly. 
     
     
         9 . The turbine engine of  claim 1 , further comprising a gland, in which a head of the peripheral tube is inserted, passes through the exterior wall, the head having a discal flange engaged between the two parts of the gland. 
     
     
         10 . The turbine engine of  claim 1 , wherein an inside end of the peripheral tube passes through a hole formed in the interior wall with clearance between the peripheral tube and the interior wall. 
     
     
         11 . The turbine engine of  claim 1 , wherein the connection between the peripheral tube and the intermediate wall is achieved by a part having a conical upper portion that is flared towards the outside and is extended at the base thereof by a discal flange that is movable in radial translation in a slit formed in the head of a tubular extension soldered to a surface of the intermediate wall.