公开(公告)号：US5222360A

公开(公告)日：1993-06-29

申请号：US785365

申请日：1991-10-30

申请人： Eugene J. Antuna ,  Donald F. Keck ,  Robert H. Roth ,  James W. Brantley ,  Thomas G. Wakeman ,  Jeffrey B. Fravel ,  Alan B. Corbeil ,  William J. Strock

发明人： Eugene J. Antuna ,  Donald F. Keck ,  Robert H. Roth ,  James W. Brantley ,  Thomas G. Wakeman ,  Jeffrey B. Fravel ,  Alan B. Corbeil ,  William J. Strock

IPC分类号： B64D27/18 ,  B64D27/26 ,  F02C7/20

CPC分类号： B64D27/18 ,  B64D27/26 ,  F02C7/20 ,  Y02T50/672

摘要： A gas turbine engine has a core frame separable from a vane frame for removably attaching the vane frame to a core structure through a mid ring. The mid ring includes an annular forward panel and an annular aft panel, each of which has a radially outer flange and a radially inner flange. The inner flanges are welded to the core frame and the outer flanges are bolted to the vane frame. A plurality of circumferentially spaced stiffeners extend between the forward and aft panels, with each of the stiffeners including a pair of stringers extending diagonally across the stiffeners. Panels may be incorporated with the stringers between the triangular shaped areas adjacent the forward and aft panels of the stiffener. The bolted connection between the mid ring and the vane frame includes a plurality of tongue and groove joints formed in the flanges of the mid ring and vane frame. The tongue and groove joints provide additional radial support for the core engine within the vane frame. Preferably, the tongue and groove joints are formed with angular sides so that conformance between the joints can be achieved by simply tightening the bolts attaching the joints. In one embodiment, the tongue and groove joints may only be used at preselected circumferential positions with the remainder of the flange connections using overlapping lap joints.

摘要翻译： 燃气涡轮发动机具有与叶片框架分离的芯框架，用于通过中环将叶片框架可拆卸地附接到芯结构。 中环包括环形前板和环形后板，每个板具有径向外凸缘和径向内凸缘。 内部凸缘焊接到芯框架，外部凸缘螺栓连接到叶片框架。 多个周向隔开的加强件在前板和后板之间延伸，其中每个加强件包括一对沿着加强件对角延伸的纵梁。 面板可以与邻近加强筋的前板和后板的三角形形状区域之间的桁条结合。 中间环和叶片框架之间的螺栓连接包括形成在中环和叶片框架的凸缘中的多个榫舌和凹槽接头。 舌和槽接头为叶片框架内的核心发动机提供额外的径向支撑。 优选地，舌和沟槽接头形成有角侧，使得可以通过简单地紧固附接接头的螺栓来实现接头之间的一致性。 在一个实施例中，舌和槽接头可以仅在预选的圆周位置处使用，其余的凸缘连接使用重叠搭接接头。