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    • 1. 发明授权
    • Sealing structures for gas turbine engines
    • 燃气轮机发动机密封结构
    • US5470198A
    • 1995-11-28
    • US299061
    • 1994-08-31
    • Ian W. R. HarrogateDavid H. TaylorArthur B. GriffinDavid W. Tuson
    • Ian W. R. HarrogateDavid H. TaylorArthur B. GriffinDavid W. Tuson
    • F01D9/02F01D9/04F01D11/00F02C7/00F02C7/28F01D5/18
    • F01D9/023F01D11/005Y02T50/671Y02T50/675
    • A cooling and sealing arrangement in a gas turbine engine comprises a seal assembly extending between nozzle guide vanes and combustion chamber discharge nozzles. The nozzle guide vanes have platforms having extensions which in one embodiment overlap the downstream ends of the discharge nozzles. Cooling air is supplied to the upstream edge portions of the platforms through holes in flanges on the discharge nozzles. The seal assembly defines a chamber adjacent the platform extensions which is supplied with cooling air through metering holes in the seal assembly which provides part of a boundary for a cooling air chamber, the boundary of the chamber having cooling air holes for metering cooling air into the chamber to cool the upstream portion of the nozzle guide vane outer platforms. Cooling air exits the chamber through holes in the platform extensions to film cool them.
    • 燃气涡轮发动机中的冷却和密封装置包括在喷嘴导向叶片和燃烧室排出喷嘴之间延伸的密封组件。 喷嘴导叶具有具有延伸部的平台,在一个实施例中,该延伸部与排放喷嘴的下游端重叠。 冷却空气通过排放喷嘴上的凸缘中的孔被供应到平台的上游边缘部分。 密封组件限定了邻近平台延伸部分的室,该冷却空气通过密封组件中的计量孔供应冷却空气,该冷却空气为冷却空气室提供了一部分边界,该室的边界具有冷却空气孔,用于将冷却空气计入 以冷却喷嘴导向叶片外平台的上游部分。 冷却空气通过平台延伸部分中的孔离开室以使其冷却。