Low-emission trapped-vortex combustor with rich-burn/quick-quench/lean-burn combined with lean pre-mix pre-vaporization

A low-emission trapped-vortex combustor with rich-burn/quick-quench/lean-burn combined with lean pre-mix pre-vaporization comprises a diffuser, casing parts of an aeroengine, a diversion device, a cavity and a combustion liner. Air enters the combustor through the diffuser, the casing parts of the aeroengine comprise an outer casing part of the aeroengine and an inner casing part of the aeroengine, the air is divided into by-pass airflow and main airflow through the diversion device, the cavity comprises an inner annular cavity body and an outer annular cavity body, cavity front wall air inlet holes and cavity rear wall air inlet holes are formed in the cavity, and a plurality of cooling holes and blending holes are formed in the combustion liner. The low-emission trapped-vortex combustor with rich-burn/quick-quench/lean-burn combined with lean pre-mix pre-vaporization further comprises a main airflow pre-vaporizing device and a flame connecting device, wherein the main airflow pre-vaporizing device is used for pre-vaporizing fuel and stabilizing flames, and the flame connecting device is used for delivering flames. The low-emission trapped-vortex combustor with rich-burn/quick-quench/lean-burn combined with lean pre-mix pre-vaporization further comprises a main burning level fuel manifold and an on-duty level fuel manifold which provide fuel for the inner annular cavity body and the outer annular cavity body.