FIELD: machine building.
SUBSTANCE: invention relates to gas turbine units, in particular to fuel injectors with a tapered liquid gallery. Liquid gallery for a fuel injector of a gas turbine unit includes a gallery body, a liquid gallery scroll, a plurality of atomiser inlets, and a plurality of atomiser bosses. Liquid gallery scroll extends into the gallery body spanning from a first end to a second end in a circumferential direction. Liquid gallery scroll includes a taper with a cross-sectional area of the liquid gallery scroll reducing from the first end to the second end. Each atomiser inlet is in flow communication with the liquid gallery scroll. Each atomiser boss is aligned with one of the plurality of atomiser inlets. Fuel injector of a gas turbine unit including a liquid gallery and a method for overhaul of an injector of a gas turbine unit are also disclosed.
EFFECT: invention makes it possible to reduce or prevent the coking of the fuel channels by reducing the temperature of the fuel.
9 cl, 8 dwg
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