INJECTION TORCH Russian patent published in 2009 - IPC F23D14/04 

FIELD: heating.

SUBSTANCE: invention is related to power-engineering and can be used for preparation and submission of air-fuel mixture to combustion areas, mainly, gas turbines and steam gas installations combustion chambers, and also in industrial furnaces and others fuel-firing systems, which allows to simplify the design and provide a stable operation of a torch at preservation of required environmental properties. The torch contains a fuel header (1), channel (2) for fuel supply, nozzles (3), injection mixing chamber (4), swirlers (10) and (12). The fuel header (1), along the course of fuel movement, is terminated in the injection mixing chamber (4). The mixing chamber (4) is formed by a profiled ring (5) and a profiled insertion (6) located on the chamber axis, the said ring and insertion creating a 'confusor/diffuser' with formation of an injection zone (7). A case (8) is installed on the fuel header (1) from the side opposite to that of the fuel supply, with a ring air supply channel (9) formed between them. The ring air supply channel (9) is equipped with the swirler (10). The injection mixing chamber (4) is furnished with windows (11) and the swirler (12) of air-fuel mixture. The nozzles (3) are arranged circumferentially on the fuel header (1) face wall. Axes of nozzles are located at an angle to the torch axis and directed towards the geometrical centre of the swirler (12) vanes. Swirlers (10) and (12) are located in two circles with one circle above the other. Swirler (12) vanes present extension of the swirler (10) vanes and are made integral. Burning area (13) is arranged behind the swirler.

EFFECT: simplification of design and maintenance of stable operation of a torch at preservation of required environmental properties.

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