BURNER FOR COMBUSTION CHAMBER OF GAS TURBINE (VERSIONS) Russian patent published in 2010 - IPC F23D14/74 F23R3/18 

FIELD: machine building.

SUBSTANCE: burner for combustion chamber of gas turbine consists of cylinder case and flame stabiliser. Also, on the opposite to axis ends the case has end parts upper and lower positioned to the direction of the main stream, at least one inlet fuel channel and at least one inlet air channel correspondingly supplying air and fuel into an internal mixture chamber formed in the end part of the case positioned down the main stream; channels whirl air and fuel and mix them. The flame stabiliser has a main part conjugated to the case of the burner. The flame stabiliser is located inside the mixing chamber and contains a body of a non-streamlined shape elongated from the main part along axis down the main stream via the mixing chamber. It regulates a point of ignition below the mixing chamber in the direction of the main stream. Additionally, the burner consists of a unit of a refractory burner throat forming an internal chamber of recirculation and a burner output and located in conjugation with the end part of the case burner down the main stream. The unit receives antechamber gases from the mixing chamber and re-circulates part of gaseous products of combustion upstream with stabilisation of burning. The body of non-streamlined shape is centred along axis in the mixing chamber and has a conic part. The body of non-streamlined shape has also a head part increased in radial direction. Ratio of vortex ratio of the burner is 0.6 bigger due to a definite length of flame stabiliser in the axial direction. At least one inlet air channel is directed mainly along radius inside the case. At least one inlet fuel channel directs fuel into the mixing chamber mainly in axial direction. At least one inlet fuel channel contains a spiral shape part imparting angular momentum to a fuel flow. On external surface the body of non-streamlined shape has a group of grooves stretching along axis.

EFFECT: raised stabilisation of burning process, decreased pressure pulsation and reduced noise and exhaust of NO_x.

20 cl, 7 dwg