COMBUSTION CHAMBER FOR GAS-TURBINE ENGINE Russian patent published in 1998 - IPC

FIELD: gas-turbine engines. SUBSTANCE: combustion chamber has casing and annular flame tube assembled of sections with annular bulges on walls forming external and internal shells which confine flame space. Shells are double- layer structures formed by overlapping walls of adjacent sections. Each section has two walls fixed together at annular bulges. One of walls faces casing. Section walls form annular flow channel in direction of annular bulge which is upstream of flow running from wall sections. Section wall facing flame space is located upstream of flow running from annular bulge. Other wall of section facing casing walls is downstream of flow running from annular bulge. Walls of adjacent sections are telescopically fixed in addition in radial direction. EFFECT: increased service life of combustion chamber due to improved cooling efficiency of flame tube using parallel counter-flow cooling circuit arrangement.