公开(公告)号：US20120082567A1

公开(公告)日：2012-04-05

申请号：US13207960

申请日：2011-08-11

申请人： Ian TIBBOTT ,  Oliver C.T. TIBBOTT

发明人： Ian TIBBOTT ,  Oliver C.T. TIBBOTT

IPC分类号： F01D5/18

CPC分类号： F01D5/186 ,  F01D5/081 ,  F01D5/187 ,  F05D2230/12 ,  F05D2240/304 ,  F05D2240/81

摘要： A cooled turbine rotor blade for a gas turbine engine is provided. The engine has an annular flow path for conducting working fluid though the engine. The blade has an aerofoil section for extending across the annular flow path. The blade further has a root portion radially inward of the aerofoil section for joining the blade to a rotor disc of the engine. The blade further has a platform between the aerofoil section and the root portion. The platform extends laterally relative to the radial direction of the engine to form an inner boundary of the annular flow path and to provide a rear overhang portion which projects in use towards a corresponding platform of a downstream nozzle guide vane. The platform contains at least one internal elongate plenum chamber for receiving cooling air. The longitudinal axis of the plenum chamber is substantially aligned with the circumferential direction of the engine. The plenum chamber supplies the cooling air to a plurality of exit holes formed in the external surface of the rear overhang portion to cool that portion.

摘要翻译： 提供了一种用于燃气涡轮发动机的冷却涡轮转子叶片。 发动机具有用于通过发动机传导工作流体的环形流动路径。 叶片具有用于延伸穿过环形流动路径的机翼部分。 叶片还具有用于将叶片接合到发动机的转子盘的机翼部分的径向内侧的根部分。 叶片还具有在机翼部分和根部之间的平台。 平台相对于发动机的径向方向横向延伸以形成环形流动路径的内边界，并提供在使用中向下游喷嘴引导叶片的相应平台突出的后悬伸部分。 平台包含至少一个用于接收冷却空气的内部细长的增压室。 增压室的纵向轴线基本上与发动机的圆周方向对准。 增压室将冷却空气供给到形成在后悬伸部分的外表面中的多个出口孔，以冷却该部分。