公开(公告)号：US6033185A

公开(公告)日：2000-03-07

申请号：US161935

申请日：1998-09-28

申请人： Andrew J. Lammas ,  William T. Dingwell ,  Anthony E. Hungler

发明人： Andrew J. Lammas ,  William T. Dingwell ,  Anthony E. Hungler

IPC分类号： F01D5/30

CPC分类号： F01D5/3038 ,  Y02T50/673

摘要： A rotor blade includes an airfoil, an integral platform, and a dovetail integrally joined to the platform. The dovetail includes a neck extending between a pair of dovetail lobes configured to engage a complementary slot in a rotor disk. The dovetail includes an undercut extending between an outer face of the dovetail lobes and the neck for introducing a stress concentration thereat. The stress concentration relieves stress at the outer face at the expense of the neck for increasing the high cycle fatigue life of the blade.

摘要翻译： 转子叶片包括一体地连接到平台的翼型件，整体式平台和燕尾榫。 燕尾榫包括在一对燕尾形突起之间延伸的颈部，其构造成接合转子盘中的互补槽。 燕尾包括在燕尾形叶片的外表面和颈部之间延伸的底切，用于在其上引入应力集中。 应力集中减轻了外表面的应力，牺牲了颈部的增加叶片的高循环疲劳寿命。

公开(公告)号：US5310318A

公开(公告)日：1994-05-10

申请号：US95231

申请日：1993-07-21

申请人： Andrew J. Lammas ,  Nicholas J. Kray ,  Doug A. Finkhousen

发明人： Andrew J. Lammas ,  Nicholas J. Kray ,  Doug A. Finkhousen

IPC分类号： F01D5/30

CPC分类号： F01D5/3007

摘要： A rotor disk includes a rim with axially spaced apart forward and aft ends, with the aft end having a larger diameter than the forward end. The rim includes a plurality of straight dovetail slots defining dovetail posts therebetween. Each dovetail post includes a pair of lobes, a neck, and first and second pressure faces facing radially inwardly from the lobes. The first and second pressure faces vary in radial height therebetween from a first magnitude at the rim aft end to a second and smaller magnitude at the rim forward end to shift a portion of the bending loads from the dovetail post at the rim forward end to the dovetail post at the larger rim aft end.

摘要翻译： 转子盘包括具有轴向间隔开的前端和后端的边缘，其后端具有比前端更大的直径。 轮辋包括多个直线的燕尾槽，其间形成燕尾榫。 每个燕尾柱包括一对叶，颈部以及从叶片径向向内面对的第一和第二压力面。 第一和第二压力面之间的径向高度从边缘后端处的第一幅度到边缘前端处的第二和更小的幅度变化，以将一部分弯曲载荷从轮辋前端的鸠尾柱移动到 在较大的轮辋尾端的燕尾柱。

公开(公告)号：US5257909A

公开(公告)日：1993-11-02

申请号：US931079

申请日：1992-08-17

申请人： Christopher C. Glynn ,  Roger C. Walker ,  Andrew J. Lammas ,  Richard J. Fallon

发明人： Christopher C. Glynn ,  Roger C. Walker ,  Andrew J. Lammas ,  Richard J. Fallon

IPC分类号： F01D11/00 ,  F01D5/30

CPC分类号： F01D5/3015 ,  F01D11/006 ,  F01D5/326

摘要： A sealing device for compressor axial dovetail rotor blades for a gas turbine engine comprising a sealing member having a finger portion extending from a main body portion which engages a disk hook located on each disk post and forms a first point of contact about which the sealing member rotates. The sealing member further comprises an extended skirt portion which engages the blade platform of the rotor blades forming a second point of contact. The main body has a center of gravity positioned such that during operation of the engine the main body pivots due to centrifugal force about the disk hook such that the skirt portion engages the blade platform. A split ring is located between the disk posts and a tail portion extending from the lower portion of the sealing member and engages the disk post and tail portion during operation of the engine thereby forming a third point of contact. The combination of the skirt element contacting the blade platform and the split ring contacting the tail portion and the disk posts effectively prevents any leakage axially through the rotor blade dovetail.

摘要翻译： 一种用于燃气涡轮发动机的压缩机轴向燕尾转子叶片的密封装置，包括密封构件，该密封构件具有从主体部延伸的指状部分，该主体部分接合位于每个盘柱上的盘钩，并形成第一接触点，密封构件 旋转 密封构件还包括延伸的裙部，其接合形成第二接触点的转子叶片的叶片平台。 主体具有重心定位，使得在发动机操作期间，主体由于围绕盘钩的离心力枢转，使得裙部接合刀片平台。 开口环位于盘柱和从密封构件的下部延伸的尾部之间并且在发动机操作期间与盘柱和尾部接合，从而形成第三接触点。 接触叶片平台的裙部元件和接触尾部和圆盘柱的开口环的组合有效地防止轴向穿过转子叶片燕尾榫的任何泄漏。