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    • 9. 发明申请
    • FILM-COOLED TURBINE BLADE FOR A TURBOMACHINE
    • 用于涡轮机的薄膜冷却涡轮叶片
    • US20140219814A1
    • 2014-08-07
    • US13756653
    • 2013-02-01
    • Andreas Heselhaus
    • Andreas Heselhaus
    • F01D25/12
    • F01D5/186F05D2260/209F05D2260/2212
    • A turbine blade for a turbomachine has an outer wall which delimits an inner cavity. Cooling fluid flows in the inner cavity. A through duct is arranged in the outer wall through which the cooling fluid flows from the inner cavity to an outside of the turbine blade. The through duct is inclined with respect to a trailing edge of the turbine blade, wherein a marginal portion of an entrance of the through duct is designed on an upstream side to be sharp-edged in relation to other marginal portions of the entrance such that a separation zone of a cooling fluid flow is formed in the through duct. A pair of swirls builds up in the through duct, wherein velocity vectors of the cooling fluid flow between the swirl centers point toward a downstream side of the through duct.
    • 用于涡轮机的涡轮机叶片具有限定内腔的外壁。 冷却液在内腔中流动。 通气管布置在外壁中,冷却流体通过该外壁从内腔流到涡轮叶片的外部。 贯通管道相对于涡轮机叶片的后缘倾斜,其中贯通管道入口的边缘部分被设计在相对于入口的其它边缘部分被锐化的上游侧,使得 在通气管中形成冷却流体流的分离区。 在通气管中形成一对漩涡,其中冷却流体在涡流中心之间流动的速度矢量指向通过管道的下游侧。