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    • 25. 发明授权
    • Turbine shroud segment and shroud assembly
    • 涡轮护罩段和护罩组件
    • US06702550B2
    • 2004-03-09
    • US10050451
    • 2002-01-16
    • Toby George Darkins, Jr.Mary Ellen AlfordChristopher Charles Glynn
    • Toby George Darkins, Jr.Mary Ellen AlfordChristopher Charles Glynn
    • F01D1108
    • F01D11/08F01D9/04F01D11/24F01D25/12
    • A turbine engine shroud segment, preferably a low ductility material, for example a ceramic matrix composite, comprises a segment body extending between body circumferential ends. The body includes a body radially inner surface arcuate at least circumferentially, and a body radially outer surface from which a plurality of hooks extend generally radially outwardly. Each hook comprises a generally radially outwardly extending hook arm with a generally axially extending hook end having a generally radially inner surface in spaced apart juxtaposition with a portion of the body radially outer surface. Such body outer surface includes at least two body contact surfaces each matched in shape and in juxtaposition at least at body circumferential ends with a cooperating hanger contact surface. The radially inner surface of each hook end includes a hook end contact surface matched in shape with a cooperating hanger contact surface at least in a circumferential middle portion of such surface. In a turbine engine shroud assembly, a plurality of such shroud segments are assembled circumferentially with a shroud hanger including at least one hanger foot assembled within and between the segment hooks. The hanger foot includes a plurality of spaced apart hanger foot contact surfaces cooperating in juxtaposition with the contact surfaces of the shroud segment body radially outer surface and the hook end radially inner surfaces. The various contact surfaces cooperating in juxtaposition are matched in shape each to define a fluid choke therebetween.
    • 涡轮发动机护罩段,优选低延展性材料,例如陶瓷基质复合材料,包括在主体周向端部之间延伸的段体。 主体包括至少周向弧形的主体径向内表面,以及主体径向外表面,多个钩从该径向外表面大致径向向外延伸。 每个钩包括大致径向向外延伸的钩臂,具有大致轴向延伸的钩端,其具有与主体径向外表面的一部分间隔开并置的大致径向内表面。 这种主体外表面包括至少两个身体接触表面,每个至少两个身体接触表面的形状和形状至少在身体周向端部处并置,并具有配合的衣架接触表面。 每个钩端的径向内表面包括至少在该表面的周向中间部分中与配合的衣架接触面匹配的钩端接触表面。 在涡轮发动机护罩组件中,多个这样的护罩段与护罩悬挂器圆周地组装,护罩悬挂器包括组装在段钩内部和之间的至少一个衣架脚。 衣架脚包括多个间隔开的衣架脚接触表面,其与护罩段主体的径向外表面和钩端径向内表面的接触表面并置配合。 并列配合的各个接触表面的形状各自在其间形成流体扼流圈。