GAS TURBINE CANNULAR-TYPE COMBUSTION CHAMBER Russian patent published in 1999 - IPC

FIELD: power plants working on fuel gas containing flame tube connected with gas receiver which is fastened to outer and inner cases; cavity of gas receiver is formed by its own circular walls. SUBSTANCE: each flame tube has front wall at outlet in direction transversal to flow which is fastened to wall of flame tube and connected with gas receiver. Set of air swirlers is located higher in way of low; wall of flame tube from these swirler is solid. Air swirlers are made in form of inner and outer axial passages with open ends and blades inside them; these passages are located concentrically. Blades in outer passage of swirler are located at lesser distance relative to wall of flame tube directed towards combustion zone as compared with blade in inner passage. Direction of twisting of blades in outer and inner passages is opposite. Axes of inner and outer passages of swirler are located in radial plane of flame tube passing through angle of front wall. Number of passages in swirler may be more than two and number of passages with blades may be even or odd. EFFECT: reduced toxicity of exhaust gases; increased saving of fuel due to intensification of mixing process and completeness of fuel combustion. 3 cl, 3 dwg