GAS-TURBINE ENGINE Russian patent published in 2008 - IPC F02C7/06 F02C7/47 

FIELD: engineering industry.

SUBSTANCE: gas-turbine engine includes compressor with rotable guide vanes, fixed at the entrance side, and air bleed valves with ring collector between them, placed lower along the stream. Ring collector is connected at the input with the compressor air-gas channel. At the output it is connected to the bearing assembly air cavity through the radial air cavity at the compressor input. Gas-turbine engine also contains air bleeding latch gear, connected at the input with radial air cavities. In the output it is connected to the air ring collector of reduced pressure and to the air ring collector of increased pressure. Air ring collector of reduced pressure is located between rotating guide vanes and air bleed valve. Air ring collector of increased pressure is placed lower the stream of air bleed valves with the possibility of air bleeding changeover from the increased pressure collector to the reduced pressure collector simultaneously with the air bleed valve closing. Reduced pressure collector is connected with air-gas channel through the compressor stage behind the last along the stream rotating guide vane. Increased pressure collector is connected with the air bleed stage or the next stage.

EFFECT: gas-turbine reliability improving.

2 cl, 4 dwg