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    • 5. 发明授权
    • Gas turbine cooled blade
    • 燃气轮机冷却叶片
    • US06290462B1
    • 2001-09-18
    • US09272559
    • 1999-03-19
    • Tatsuo IshiguroKoji WatanabeMasaaki MatsuuraKenichiro TakeishiJunichiro MasadaYasuoki TomitaKiyoshi Suenaga
    • Tatsuo IshiguroKoji WatanabeMasaaki MatsuuraKenichiro TakeishiJunichiro MasadaYasuoki TomitaKiyoshi Suenaga
    • F01D1100
    • F01D5/187F05D2250/185F05D2260/2212
    • A gas turbine cooled blade is constructed without an increase in the number of parts or time requirements, in which seal air is maintained at a lower temperature with the heat exchange rate being suppressed, and the heat transfer rate of the cooling medium in cooling passage is enhanced. A plurality of cooling passages (A, B, C, D, E) is provided in a blade, and the first row cooling passage (A) is covered at the blade inner and outer peripheries and communicates with the second row cooling passage (B) through communication holes (6) and with the main flow gas path through film cooling holes (7). The second row cooling passage (B) communicates with the blade inner peripheral cavity (10) to form a seal air supply passage. A plurality of ribs (31) are disposed on the inner wall of cooling passage (22) with a predetermined pitch (P). The ribs are arranged alternately and are inclined against cooling medium flow with respective higher first end contacting lower side faces of an immediately upstream rib at a position on both side portions of cooling passage (22). High heat transfer rate areas are formed on both side portions of cooling passage (22), and the average heat transfer rate in cooling passage is enhanced.
    • 在不增加部件或时间要求的情况下构建燃气轮机冷却叶片,其中密封空气在热交换率被抑制下保持在较低温度,并且冷却通道中的冷却介质的传热速率为 增强。 多个冷却通道(A,B,C,D,E)设置在叶片中,第一排冷却通道(A)被覆盖在叶片的内周和外周,并与第二排冷却通道 )通过连通孔(6)并且主流动气体通道通过膜冷却孔(7)。 第二排冷却通道(B)与叶片内周腔(10)连通,形成密封空气供给通道。 多个肋(31)以预定的间距(P)设置在冷却通道(22)的内壁上。 这些肋交替布置并且相对于冷却介质流倾斜,并且在冷却通道(22)的两侧部分的位置处,相应较高的第一端接触紧紧上游的肋的下侧面。 在冷却通道(22)的两侧形成有高的传热率区域,并且冷却通路的平均传热率提高。
    • 10. 发明授权
    • Gas turbine blade
    • 燃气轮机叶片
    • US06257830B1
    • 2001-07-10
    • US09230983
    • 1999-06-02
    • Masaaki MatsuuraKiyoshi SuenagaSunao AokiKazuo UematsuHiroki FukunoYasuoki Tomita
    • Masaaki MatsuuraKiyoshi SuenagaSunao AokiKazuo UematsuHiroki FukunoYasuoki Tomita
    • F01D518
    • F01D5/147F01D5/187F05D2260/2322
    • In a steam cooling system proposed heretofore, high-pressure steam is supplied into an internal space of a blade for effecting cooling thereof with the high-pressure steam to thereby recover heat energy. This system however suffers from problems concerning the strength of the blade and the like. The present invention solves these problems and provides a gas-turbine blade which does not suffer from problems concerning the strength thereof nor problems concerning the flow of high-pressure steam. To this end, a coolant flow passage is formed within the blade extending in the longitudinal direction of the blade, and reinforcing ribs which interconnects a dorsal wall and a ventral wall of the blade is disposed within the coolant flow passage so as to extend in the flow direction of the coolant. Hence, the strength of the blade can be ensured without any obstacle to the flow of the coolant.
    • 在迄今为止提出的蒸汽冷却系统中,将高压蒸汽供应到叶片的内部空间中,以利用高压蒸汽冷却,从而回收热能。 然而,该系统存在关于叶片等的强度的问题。 本发明解决了这些问题,提供了一种不存在与强度相关的问题的燃气轮机叶片,也不会涉及高压蒸汽的流动问题。 为此,在刀片的纵向延伸的叶片内形成冷却剂流动通道,并且将与叶片的背壁和腹壁相互连接的加强筋设置在冷却剂流动通道内,以便在 冷却液的流动方向。 因此,可以确保叶片的强度,而不会妨碍冷却剂的流动。