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    • 1. 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。
    • 7. 发明授权
    • Steam cooled blade
    • 蒸汽冷却叶片
    • US5873695A
    • 1999-02-23
    • US861539
    • 1997-05-22
    • Kenichiro TakeishiYoshikuni Kasai
    • Kenichiro TakeishiYoshikuni Kasai
    • F01D5/18F02C7/18F04D29/32F04D29/58F04D29/38
    • F01D5/187F05D2260/205F05D2260/2212F05D2260/2322
    • A steam cooled blade operating in a high temperature gas with a high cooling effect on a trailing edge portion has an impingement plate, disposed in the blade lengthwise direction within a trailing edge side cooling passage formed on a trailing edge side of a moving blade. The impingement plate partitions the trailing edge side cooling passage into a convection cooling steam passage, into which steam is introduced, and an impingement cooling steam passage, formed along a trailing edge of the moving blade. The steam cooled blade further has a by-pass passage 14 for joining the steam, after it is used for cooling the moving blade, flowing from a blade tip side of the impingement cooling steam passage with the steam flowing to a leading edge direction of the moving blade from the convection cooling steam passage.
    • 在后缘部分具有高冷却效果的高温气体中工作的蒸汽冷却叶片具有在形成于活动叶片的后缘侧的后缘侧冷却通道中沿叶片长度方向设置的冲击板。 冲击板将后缘侧冷却通道分隔成引入蒸汽的对流冷却蒸汽通道和沿着动叶片的后缘形成的冲击冷却蒸汽通道。 蒸汽冷却叶片还具有用于连接蒸汽的旁通通道14,在用于冷却动叶片之后,蒸汽流经冲击冷却蒸汽通道的叶片末端侧流动, 从对流冷却蒸汽通道移动叶片。