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    • 9. 发明授权
    • Nozzle with fluted tube
    • 带喷管的喷嘴
    • US06915638B2
    • 2005-07-12
    • US10388797
    • 2003-03-13
    • Bryan T. RunkleJie QianCurtis F. Harding
    • Bryan T. RunkleJie QianCurtis F. Harding
    • F02C7/224F02C7/22
    • F02C7/224
    • A fuel injector for gas turbine engines includes an inlet fitting, a housing stem, and a spray nozzle. A pair of fuel passages in the stem deliver fuel in a primary (continuous) flow and a secondary (non-continuous or reduced) flow to primary and secondary discharge orifices in the nozzle. The fuel passages are defined by inner and outer concentric conduits, with the primary flow directed through the inner conduit, and the secondary flow directed through the outer conduit. Fins are provided unitary with the inner conduit along the length of the housing stem, and are fixed at their radial outer ends to the outer conduit. The fins provide structural support and thermally connect the inner and outer conduits. During low power operation, the fins transfer heat energy between the outer conduit to the inner conduit to cool the outer conduit and thermally protect the fuel in the secondary fuel passage.
    • 用于燃气涡轮发动机的燃料喷射器包括入口配件,壳体杆和喷嘴。 杆中的一对燃料通道将主要(连续)流和辅助(非连续或减少)流中的燃料输送到喷嘴中的初级和次级排放孔。 燃料通道由内部和外部同心管道限定,主要流动通过内部导管,并且二次流动通过外部导管。 翅片沿着壳体杆的长度与内导管一体地设置,并且在其径向外端处固定到外导管。 翅片提供结构支撑并热连接内外管道。 在低功率操作期间,翅片将外部导管之间的热能传递到内部导管,以冷却外部导管并热辅助辅助燃料通道中的燃料。