GAS TURBINE COMBUSTION CHAMBER Russian patent published in 1998 - IPC

FIELD: gas turbines. SUBSTANCE: each flame tube 1 in combustion chamber of gas turbine has shoulders 2 and 3 in wall 4. Flame tubes 1 are located in circular space between outer and inner casing casings and are connected with gas receiver 5 having outer envelope 6 and inner envelope 7. Flame tube 1 is provided with front wall 12 at outlet 11; wall 12 is secured to wall 4 of flame tube 1. Front wall 12 is located above end face 14 in way of flow 13; flame tube 1 is also provided with mixer 15 mounted inside flame tube 1; upward motion of mixer 15 is limited by shoulder 2 in wall 4 and downward motion is limited by shoulder 3. Mixer 15 is made in form of circular corrugated envelope 19 with recesses and projections at its inlet end smoothly changing into projections and recesses at outlet end. Projections of inlet end overlap recesses of outlet end and projections of outlet end overlap recesses of inlet end in way of longitudinal axis 27 of flame tube 1, thus shielding turbine blades against infra-red radiation of primary combustion zone 28 of flame tube 1. Outer envelope 6 and inner envelope 7 are connected telescopically with front walls 12 of flame tubes 1. EFFECT: enhanced reliability; increased service life; reduced emission of nitric oxides by three and more times. 5 dwg