Aerodynamic premixture injection for gas turbines - premixes fuel with primary air from nozzles to impinge on dome and evacuating into swirling air directed to combustion chamber

摘要

A cylinder (8) extends into the combustion chamber (3) full gas zone, from its base (6), with a central axis (8a) fuel pipe (7) carrying several injection orifices (21). A deflector (18) dome (15) downstream (17) of the cylinder, with an annular wall (14) having radial orifices (22), surrounds first air entries (9), around the pipe. Upstream, secondary vanes (23) are mounted between the annular wall and the cylinder. The dome chamber (19) receives injected fuel (20), mixing with the first air flow (F1), forming a very rich premixture, leaving by the radial orifices, to form a less rich mixture with the second air flow (F2). USE/ADVANTAGE - Reduces aero engine pollutants and auto inflammation. Cools dome deflector shield with premixture.