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    • 1. 发明授权
    • Turbine blade with split impingement rib
    • 涡轮叶片带有分体冲击肋
    • US07713027B2
    • 2010-05-11
    • US11511114
    • 2006-08-28
    • Anthony P. CherolisRichard H. Page
    • Anthony P. CherolisRichard H. Page
    • F01D5/18
    • F01D5/187F05D2260/201F05D2260/22141Y02T50/676
    • A gas turbine engine is provided with an airfoil component that is disclosed as a turbine blade. Internal cooling passages circulate air within the blade. An impingement rib separates a cooling air channel from a pedestal array, and includes cross-over holes to meter the flow of air into the pedestal array. A lower end of the impingement rib is split to reduce stress concentrations between the impingement rib and a platform. Further, the pedestals adjacent to the lower end of the impingement rib are formed to be stubs, which do not extend entirely across a width of the blade. The disclosed structure reduces the stress concentration at an area where the impingement rib meets the platform.
    • 燃气涡轮发动机设置有被公开为涡轮叶片的翼型件。 内部冷却通道使叶片内的空气循环。 冲击肋将冷却空气通道与基座阵列分开,并且包括用于计量进入基座阵列的空气流的交叉孔。 冲击肋的下端被分裂以减少冲击肋和平台之间的应力集中。 此外,与撞击肋的下端相邻的基座形成为不完全延伸穿过叶片的宽度的短截线。 所公开的结构降低了冲击肋与平台相遇的区域处的应力集中。