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    • 9. 发明公开
    • Turbine engine blade cooling
    • Kühlsystemfüreine Gasturbinenschaufel
    • EP2031186A2
    • 2009-03-04
    • EP08252810.0
    • 2008-08-22
    • United Technologies Corporation
    • Gayman, Scott W.Piggush, Justin D.Pietraszkiewicz, Edward F.Agli, William A., III
    • F01D5/18
    • F01D5/20F01D5/288F05D2230/90F05D2260/202F05D2300/611Y10T29/49336
    • A blade (20) for a turbine engine includes an exterior surface. The exterior surface includes a portion having a thermal barrier coating (52) and an uncoated shelf (56) adjacent to the thermal barrier coating (52) without the thermal barrier coating (52). A cooling hole (48) extends from an internal passageway through the exterior surface to an exit (54). A scarfed channel (62) is recessed in the exterior surface and interconnected to the cooling hole (48) at the exit (54). The scarfed channel (62) extends to a blade tip end surface (68). The scarfed channel (62) protects the cooling fluid exiting the cooling hole (48) from secondary flows surrounding the blade that would otherwise mix with and disperse the cooling fluid. The scarfed channels (62) also increase the surface area exposed to the cooling fluid to increase the heat transfer rate.
    • 用于涡轮发动机的叶片(20)包括外表面。 外表面包括具有隔热涂层(52)的部分和与热障涂层(52)相邻的未涂覆的搁板(56),而没有隔热涂层(52)。 冷却孔(48)从内部通道穿过外表面延伸到出口(54)。 在外表面上凹陷的通道(62)并且在出口(54)处与冷却孔48相互连接。 被切割的通道(62)延伸到叶片尖端端面(68)。 裂缝通道(62)保护离开冷却孔(48)的冷却流体免受围绕叶片的二次流动,否则将与冷却流体混合并分散冷却流体。 裂缝通道(62)还增加暴露于冷却流体的表面积,以增加传热速率。
    • 10. 发明公开
    • Turbine blade of a gas turbine engine and corresponding method of cooling this blade
    • Turbinenschaufel von einem Gasturbinentriebwerk
    • EP2022941A2
    • 2009-02-11
    • EP08252498.4
    • 2008-07-23
    • United Technologies Corporation
    • Pietraszkiewicz, Edward F.Kohli, Atul
    • F01D5/18
    • F01D5/187F01D5/186F05D2230/21F05D2250/185F05D2260/202
    • A blade for a turbine engine includes structure providing spaced apart suction and pressure sides (40,42). A cooling passage (44) includes a first passageway (48) near the pressure side (42) and a second passageway (52,56) in fluid communication with the first passageway (48). The second passageway (52,56) is arranged between the first passageway (48) and the suction side (40). The cooling passage (44) provides a serpentine cooling path that is arranged in a direction transverse from a chord extending between trailing and leading edges (36,38) of the blade. During use, cooling fluid is supplied to the pressure side (42) through first cooling apertures (60) fluidly connected to the first passageway (48) and to the suction side (40) through second cooling apertures (62) fluidly connected to the other passage way (52,56). The first passageway (48) is at a higher pressure that then second passageway (52,56) so that cooling fluid is provided by the cooling passage (44) to the pressure and suction sides (40,42) in a balanced fashion.
    • 用于涡轮发动机的叶片包括提供间隔开的吸力和压力侧面(40,42)的结构。 冷却通道(44)包括靠近压力侧(42)的第一通道(48)和与第一通道(48)流体连通的第二通道(52,56)。 第二通道(52,56)布置在第一通道(48)和吸力侧(40)之间。 冷却通道(44)提供蛇形冷却路径,其沿横向于在叶片的后缘和前缘(36​​,38)之间延伸的弦线的方向布置。 在使用期间,冷却流体通过流体地连接到第一通道(48)的第一冷却孔(60)和通过流体连接到另一个的第二冷却孔(62)而被吸入侧(40)供应到压力侧 通行方式(52,56)。 第一通道(48)处于比第二通道(52,56)更高的压力,使得冷却流体以平衡的方式由冷却通道(44)提供给压力侧和吸力侧(40,42)。