TUBULAR-ANNULAR COMBUSTION CHAMBER OF GAS TURBINE Russian patent published in 1998 - IPC

FIELD: natural gas burning in combustion chamber of power plant. SUBSTANCE: combustion chamber has fire tubes, each being coupled to fuel injector and gas collector coupled in its turn with external and internal bodies. Fire tube wall is made corrugated at its output and is coupled to face wall located at output face of fire tube. Corrugated wall forms longitudinal channels over perimeter. Input of these channel is located up-stream of face wall and their output coincides with output face of fire tube. Face wall has flange embracing the projections of fire tube corrugated wall. It is coupled to gas collector for movement along fire tube axis. Longitudinal channels in every fire tube are made with twist angle relative to fire tube axis and with holes directed opposite to flow. EFFECT: stable efficient burning with low concentration of nitrogen oxides in turbine waste gases. 2 cl, 5 dwg