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    • 10. 发明专利
    • Gas turbine stator vane
    • 气体涡轮定子风扇
    • JP2012233406A
    • 2012-11-29
    • JP2011100340
    • 2011-04-28
    • Hitachi Ltd株式会社日立製作所
    • MIYOSHI ICHIROHIGUCHI SHINICHINODA MASAMI
    • F01D9/02
    • F01D9/041F01D5/143F05D2240/10F05D2240/80F05D2250/184F05D2250/711F05D2250/712
    • PROBLEM TO BE SOLVED: To provide a gas turbine stator vane for suppressing augmentation of a horseshoe-shaped vortex occurring near a leading edge of the vane and effective for suppressing a secondary flow in a region sandwiched between a suction surface and a pressure surface.SOLUTION: The gas turbine stator vane includes: a vane profile portion 12 having the pressure surface 10b concave chordwise and a suction surface 10a convex chordwise; an outer-circumferential end wall positioned at an outer circumferential side of the vane profile portion 12; and an inner-circumferential end wall positioned at an inner circumferential side of the vane profile portion 12. An outer-circumferential end wall inner surface 10 that is an inner-circumferential surface of the outer-circumferential end wall has an inward convexed shape and an outward convexed shape, at the suction surface side of the vane profile portion 12. A top of the inward convexed shape is positioned near the leading edge 12a of the vane profile portion. A top of the outward convexed shape is positioned near the intermediate position between the leading edge 12a and a trailing edge 12b of the vane profile portion 12.
    • 要解决的问题:提供一种用于抑制在叶片的前缘附近发生的马蹄形涡流增大的燃气轮机定子叶片,并且有效地抑制夹在吸力表面和压力之间的区域中的二次流动 表面。 解决方案:燃气轮机定子叶片包括:叶片轮廓部分12,其具有沿着弦的方向凹入的压力表面10b和弦向的凸缘10a; 位于叶片轮廓部12的外周侧的外周端壁; 以及位于叶片型面部12的内周侧的内周端壁。作为外周端壁的内周面的外周端壁内面10具有向内凸的形状, 向外凸出的形状,位于叶片轮廓部分12的吸力表面侧。向内凸起的顶部位于叶片轮廓部分的前缘12a附近。 向外凸起的形状的顶部位于叶片轮廓部分12的前缘12a和后缘12b之间的中间位置附近。(C)2013,JPO和INPIT