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公开(公告)号：US5257909A
公开(公告)日：1993-11-02
申请号：US931079
申请日：1992-08-17
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。
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公开(公告)号：US5435694A
公开(公告)日：1995-07-25
申请号：US155967
申请日：1993-11-19
CPC分类号： F01D5/141 , F01D5/3007 , Y02T50/673
摘要： The present invention relieves the stress at a fillet of a blade shank using at least one axially extending pocket on the shank near an axially extending fillet of a shank to root interface or a shank to platform interface on a pressure or suction side of the blade and the pocket is axially shorter than the fillet. The stress relief pocket has a radially extending pocket width that is substantially wider than a fillet width between generally axially extending edges of the fillet wherein the pocket width may be several times wider than the fillet width. The wider pocket shields the fillet thereby reducing the stress concentration at the fillet.
摘要翻译： 本发明使用刀柄上的至少一个轴向延伸的口袋靠近刀柄的轴向延伸圆角至叶片的根部界面或柄与柄与平台界面之间在叶片的压力或吸力侧接近而减轻叶片柄部的应力，并且 口袋的轴向短于圆角。 应力释放袋具有径向延伸的袋宽度，其宽度大大大大于圆角的大致轴向延伸的边缘之间的圆角宽度，其中袋宽可以比圆角宽度多数倍。 更宽的口袋可以防护圆角，从而减少鱼片上的应力集中。
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公开(公告)号：US5351478A
公开(公告)日：1994-10-04
申请号：US891494
申请日：1992-05-29
CPC分类号： F01D25/26 , F04D29/522 , F04D29/584 , F05D2240/126 , F05D2260/201 , F05D2260/941 , Y02T50/676
摘要： An apparatus and method for minimizing compressor casing distortion due to bleed air extraction wherein the compressor casing includes an annular outer casing having at least one outlet duct, an annular inner casing disposed co-axially with the outer casing and spaced radially inwardly therefrom to define a plenum, two radial discs extending inwardly from the outer casing defining a plenum, a plurality of small area bleed openings located in the inner casing for imparting a radial velocity to the bleed air greater than the circumferential velocity entering the plenum, an air tube located over each bleed opening, and a baffle plate located on top of the air tubes and communicating with the radial discs for supporting the casings, whereby the bleed air impinges on the outer casing and controls distortion by sufficiently reducing the circumferential temperature gradient forming at the outer casing.
摘要翻译： 一种用于使压缩机壳体由于排气提取引起的变形最小化的装置和方法，其中所述压缩机壳体包括具有至少一个出口管道的环形外壳，与所述外壳同轴并与所述外壳径向向内间隔开的环形外壳， 气室，从限定集气室的外壳向内延伸的两个径向盘，位于内壳中的多个小区域排放口，用于使放气速度大于进入气室的圆周速度，空气管位于 每个排气口和位于空气管顶部的挡板，并与用于支撑壳体的径向盘连通，由此泄放空气冲击外壳并通过充分降低在外壳处形成的周向温度梯度来控制变形 。
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