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    • 1. 发明授权
    • Multi-sided diffuser for a venturi in a fuel injector for a gas turbine
    • 用于燃气轮机的燃料喷射器中的文丘里管的多面扩散器
    • US07003958B2
    • 2006-02-28
    • US10879102
    • 2004-06-30
    • Constantin Alexandru DinuIris Ziqin HuJames Michael Storey
    • Constantin Alexandru DinuIris Ziqin HuJames Michael Storey
    • F02C1/00F02G3/00
    • F23R3/34F23R3/286F23R3/40
    • A combustor for a gas turbine includes a main fuel injector for receiving compressor discharge air and mixing the air with fuel for flow to a downstream catalytic section. The main fuel injector includes an array of venturis each having an inlet, a throat and a diffuser. A main fuel supply plenum between forward and aft plates supplies fuel to secondary annular plenums having openings for supplying fuel into the inlets of the venturis upstream of the throats. Each diffuser transitions from a circular cross-section at the throat to multiple discrete angularly related side walls at the diffuser exit. Gaps between circumferentially and radially spaced diffusers at their exits are eliminated. With this arrangement, uniform flow distribution of the fuel/air, velocity and temperature is provided at the catalyst inlet.
    • 用于燃气轮机的燃烧器包括主燃料喷射器,用于接收压缩机排放空气并将空气与用于流动的燃料混合到下游催化部分。 主燃料喷射器包括每个具有入口,喉部和扩散器的孔的阵列。 前后板之间的主要燃料供应气室将燃料供给到具有用于将燃料供应到喉部上游的通风口的入口的开口的次级环形增压室。 每个扩散器从喉部的圆形横截面到扩散器出口处的多个离散的角度相关的侧壁。 在其出口处的周向和径向间隔的扩散器之间的间隙被消除。 通过这种布置,在催化剂入口处提供了燃料/空气,速度和温度的均匀流量分布。