FRONT DEVICE OF THE ANNULAR COMBUSTION CHAMBER OF A GAS TURBINE INSTALLATION AND THE METHOD FOR ITS OPERATION Russian patent published in 2021 - IPC F23R3/12 

FIELD: mechanical engineering.

SUBSTANCE: group of inventions relates to the design of the front device of the combustion chambers of gas turbine installations and the method for its operation. The front device of the annular combustion chamber includes the external, internal walls, front, separation and fire walls, burner devices mounted on the front, separation and fire walls, external and internal annular channels. The firing wall is made in the form of a truncated cone, and bushings in the amount of at least 1 row on each wall are fixed in the external and internal walls. The burner devices are located on the external and internal tiers. Each burner device includes an air channel with a swirler and a nozzle at the outlet. Inside the air channel, a fuel nozzle is coaxially placed, and outside there is a fuel-air channel with a swirler at the inlet, on the sleeve of which radial fuel supply holes are made. An external channel is located outside the fuel-air channel, equipped with axial fuel supply holes and holes for air supply at the entrance to the external channel, while the output of the external channel is connected to the output of the fuel-air channel by holes. There are three fuel collectors, two of which are located at the entrance to the internal ring channel, fixed to the front wall and connected by tubes to the fuel injectors. Shells are attached to the separation and external walls of the front device, the cavity between which forms a third fuel collector, which communicates with the cavity between the front and separation walls through radial holes in the separation wall. The cavity between the front and separation walls is connected to the radial fuel supply holes on the sleeve of the axial air blade swirler of the fuel-air channel and the axial fuel supply holes of the outer channel.

EFFECT: inventions make it possible to reduce the content of harmful emissions of nitrogen oxides and carbon monoxide.

5 cl, 4 dwg