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发明公开
CN103133040A 冷却的涡轮机叶片和用于冷却涡轮机叶片的方法 有权

冷却的涡轮机叶片和用于冷却涡轮机叶片的方法
摘要：
本发明涉及冷却的涡轮机叶片和用于冷却涡轮机叶片的方法。一种冷却的涡轮机叶片包括：根部，其用于将叶片固定到转子；翼型，其从根部沿着径向轴线延伸；和尖端护罩，其设置在翼型的径向向外端部上。尖端护罩从翼型沿着周向延伸，并且在其自身内限定中心增压室和外围增压室。翼型限定后部翼型冷却通路，后部翼型冷却通路在邻近翼型的后缘部分处径向延伸穿过翼型。翼型还限定后部冷却入口，以将冷却流体的后部流提供至后部翼型冷却通路。翼型还限定至少一个后部冷却出口，以将冷却流体的后部流从后部翼型冷却通路排出到外周增压室。尖端护罩限定至少一个外围增压室排出口，以将冷却流体的后部流排出。
摘要（英）：

A cooled turbine blade comprises a root for fixing the blade to rotor, an airfoil extending along a radial axis from the root, and a tip shroud disposed at a radially outward end of the airfoil. The tip shroud extends in a circumferential direction from the airfoil and defines, within itself, a core plenum and a peripheral plenum. The airfoil defines an aft airfoil cooling passage that extends radially through the airfoil proximate a trailing edge portion of the airfoil. The airfoil also defines an aft cooling inlet for providing an aft stream of cooling fluid to the aft airfoil cooling passage. The airfoil also defines at least one aft cooling exit for discharging the aft stream of cooling fluid from the aft airflow cooling passage to the peripheral plenum. The tip shroud defines at least one peripheral plenum vent for discharging the aft stream of cooling fluid.

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