Combustion chamber, especially annular reverse-flow combustion chamber for gas turbine engines

摘要

An annular reverse-flow combustion chamber for gas turbine engines which includes an annular chamber formed between an outer casing of the combustion chamber and a flame tube with the annular chamber being supplied with preheated air from a heat exchanger. The preheated air is directed to the flame tube for combustion, cooling or other purposes. The flame tube includes a flame tube head of a double-walled construction so as to define a further annular chamber which communicates with an air bleed line at a discharge end of a compressor so that air is taken directly from the compressor and supplied to the further annular chamber. A vaporizer pipe member is disposed at the flame tube head with at least one of the walls of the double-walled flame tube head being welded to the vaporizer pipe member.