公开(公告)号：US6148600A

公开(公告)日：2000-11-21

申请号：US259038

申请日：1999-02-26

申请人： Gilbert Farmer ,  Mehmet M. Dede ,  James A. Goreschen ,  William T. Houchens

发明人： Gilbert Farmer ,  Mehmet M. Dede ,  James A. Goreschen ,  William T. Houchens

IPC分类号： F23R3/00 ,  F02C3/06

CPC分类号： F23R3/002 ,  F23R2900/00005

摘要： A one-piece cowl for use in assembled relationship with a combustor of a gas turbine engine, the cowl being of a generally annular configuration defining a central cowl axis and being axially elongated and aerodynamically contoured relative to the central cowl axis. The one-piece cowl includes an inner annular portion, an outer annular portion, and a plurality of circumferentially spaced radial ligaments connecting the inner and outer annular portions so as to form a corresponding number of openings through a middle portion of the cowl. Each radial ligament has a designated area which enables the radial ligaments to sustain the stress levels imposed on the cowl to prevent high cycle fatigue. Each opening also has a designated area which enables insertion of fuel nozzles therein without adversely affecting air flow therethrough. The designated area for the radial ligaments is a function of the designated area for the openings and a ratio of such areas falls within a specified range.

摘要翻译： 用于与燃气涡轮发动机的燃烧器组装关系的一体式整流罩，该整流罩具有限定中央整流罩轴线并且相对于中央整流罩轴线轴向伸长并且具有空气动力学轮廓的大致环形构造。 一体式整流罩包括内部环形部分，外部环形部分和连接内部和外部环形部分的多个周向间隔开的径向韧带，以便通过整流罩的中间部分形成相应数量的开口。 每个径向韧带具有指定的区域，其使得径向韧带能够维持施加在罩上的应力水平以防止高循环疲劳。 每个开口还具有能够将燃料喷嘴插入其中的指定区域，而不会不利地影响通过其中的空气流动。 径向韧带的指定区域是开口的指定区域的函数，并且这些区域的比率落在指定范围内。