FOAMING ATOMISER FOR AERO-MECHANICAL INJECTION SYSTEM OF AIR-AND-FUEL MIXTURE TO COMBUSTION CHAMBER OF TURBOMACHINE, AERO-AND-FUEL INJECTION SYSTEM, COMBUSTION CHAMBER OF TURBOMACHINE, AND TURBOMACHINE Russian patent published in 2010 - IPC F23D11/00 F23D11/24 F23R3/20 F02C7/22 

FIELD: heating systems.

SUBSTANCE: fuel atomiser (2) for aero-mechanical injection system of air-and-fuel mixture to combustion chamber of turbomachine. Atomiser includes main tubular structure (4) with XX' axis open streamwise on lower end (4a) for supply of air-and-fuel mixture, and tubular fuel pipeline (6). Fuel pipeline is located inside main structure (4) with possibility of interacting with it in order to form annular channel (8) and is open streamwise on lower end to main structure (4) through spraying plug (10) of fuel with possibility of supplying fuel under pressure P_C to the main structure. Atomiser also includes at least one air supply channel (12) connected to turbomachine compressor stage and open to annular channel (8) so that air can be supplied under pressure P_A to this channel. In addition, fuel atomiser includes tubular gas channel (16) located inside fuel pipeline (6) and having a lot of holes (18) open to the above fuel pipeline for gas to be injected to it under pressure P_G in order to create foaming of the fuel introduced to main structure (4). Pressure P_G exceeds pressure P_A and exceeds pressure P_C. Holes (18) of gas channel (16) are located at least in one transverse plane and open to fuel pipeline (6) through spraying plug (10) of fuel. The above fuel atomiser can be a part of aero-mechanical injection system of air-and-fuel mixture to turbomachine combustion chamber the centre of which is located on YY' axis of injection system, which, in addition, includes air injecting device located downstream the fuel atomiser.

EFFECT: invention allows minimising hazardous emissions owing to decrease of time characteristics of fuel spraying and its evaporation at all operating speeds of turbomachine.

14 cl, 6 dwg