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公开(公告)号：US08425193B2
公开(公告)日：2013-04-23
申请号：US13071235
申请日：2011-03-24
IPC分类号： F01D5/22
CPC分类号： F01D5/225 , F01D5/141 , F01D5/286 , F05D2220/31 , F05D2230/41 , F05D2240/121 , F05D2240/303
摘要： A rotating blade row is provided for the final stage of a steam turbine has blades with an integrated shroud. The shroud of each blade has a projection in the axial direction, in each case on its pressure side, which prevents droplets in the working fluid of the steam turbine from reaching the shroud fillet of the respective subsequent blade in the flow direction. The shroud fillet is therefore protected against erosion damage caused by droplets impact erosion. The projection is positioned and of such a size that mass equilibrium is ensured between the suction side and the pressure side of the shroud, and stress equilibrium is ensured between the projection on the pressure side and the suction-side shroud. The projection furthermore has a recess between its greatest axial extent and the leading edge.
摘要翻译： 提供旋转刀片排用于蒸汽涡轮机的最后级具有具有集成护罩的刀片。 每个叶片的护罩在轴向方向上具有突起，在每种情况下都具有在其压力侧上的突起，其防止蒸汽轮机的工作流体中的液滴在流动方向上到达相应后续叶片的护罩角。 因此，护罩内底可以防止由液滴冲击侵蚀引起的侵蚀损坏。 该突起的定位和尺寸使得在护罩的吸力侧和压力侧之间确保质量平衡，并且确保压力侧的突起与吸力侧护罩之间的应力平衡。 突起还具有在其最大轴向范围和前缘之间的凹部。
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公开(公告)号：US08636475B2
公开(公告)日：2014-01-28
申请号：US12627514
申请日：2009-11-30
IPC分类号： F01D5/22
CPC分类号： F01D5/22
摘要： A turbomachine includes a turbine stage having a plurality of blades including a first and a second blade disposed adjacent to each other, each blade having a radial longitudinal axis and a blade tip and configured to twist around the radial longitudinal axis in an operating state in a twist direction, wherein the first and the second blades are pretwisted in a direction of twist in a non-operating state, and wherein a connecting element interconnects the first and the second blades to each other in a circumferential direction in a region of the respective blade tip so as to maintain the pretwisting.
摘要翻译： 涡轮机包括具有多个叶片的涡轮机台，所述叶片包括彼此相邻设置的第一和第二叶片，每个叶片具有径向纵向轴线和叶片尖端，并且构造成在径向纵向轴线中以操作状态在 扭转方向，其中所述第一和第二叶片在非操作状态下沿扭转方向弯曲，并且其中连接元件在所述各个叶片的区域中沿第一和第二叶片在圆周方向上彼此互连 提示，以保持预扭转。
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公开(公告)号：US20100135775A1
公开(公告)日：2010-06-03
申请号：US12627514
申请日：2009-11-30
CPC分类号： F01D5/22
摘要： A turbomachine includes a turbine stage having a plurality of blades including a first and a second blade disposed adjacent to each other, each blade having a radial longitudinal axis and a blade tip and configured to twist around the radial longitudinal axis in an operating state in a twist direction, wherein the first and the second blades are pretwisted in a direction of twist in a non-operating state, and wherein a connecting element interconnects the first and the second blades to each other in a circumferential direction in a region of the respective blade tip so as to maintain the pretwisting.
摘要翻译： 涡轮机包括具有多个叶片的涡轮机台，所述叶片包括彼此相邻设置的第一和第二叶片，每个叶片具有径向纵向轴线和叶片尖端，并且构造成在径向纵向轴线中以操作状态在 扭转方向，其中所述第一和第二叶片在非操作状态下沿扭转方向弯曲，并且其中连接元件在所述各个叶片的区域中沿第一和第二叶片在圆周方向上彼此互连 提示，以保持预扭转。
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