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    • 6. 发明授权
    • Coolable vane or blade for a turbomachine
    • 用于涡轮机的可冷却叶片或叶片
    • US06283708B1
    • 2001-09-04
    • US09453649
    • 1999-12-03
    • Mark F. Zelesky
    • Mark F. Zelesky
    • B63H114
    • F01D5/189F05D2260/201F05D2260/202Y02T50/67Y02T50/676
    • A coolable vane (12) for a turbomachine includes an airfoil (16) with a pair of imperforate ribs (42, 44) that extend laterally across the airfoil. The ribs have suction side termini (52, 56) and pressure side termini (54, 58). The suction side termini chordwisely delimit a segment SS of the airfoil suction wall (28) so that the ribs and the suction wall segment bound an internal plenum (48) for distributing a pressurized coolant spanwisely through the interior of the airfoil. An array of film cooling holes (84) penetrates the suction wall segment and is the exclusive avenue for conveying coolant from the plenum to a working medium fluid flowpath. Accordingly, relatively low pressure coolant may be supplied to the plenum without the risk of backflow or spanwise discontinuities in the surface cooling film. In one specific embodiment of the invention, the suction side rib termini (52, 56) straddle a point of minimum fluid pressure along the suction surface (38) so that positive coolant flow and spanwise continuity of the cooling film can be realized with coolant of the lowest possible pressure and without exposing the suction wall segment SS to excessive stress.
    • 用于涡轮机的可冷却叶片(12)包括翼型件(16),其具有横跨翼型延伸的一对无孔肋条(42,44)。 肋具有吸入侧端部(52,56)和压力侧端子(54,58)。 吸入侧端部弦向地限定翼型件抽吸壁(28)的段SS,使得肋和抽吸壁段结合内部增压室(48),用于将加压的冷却剂分流穿过翼型件的内部。 一组薄膜冷却孔(84)穿透吸壁部分,是将冷却剂从气室输送到工作介质流体流路的专用通道。 因此,可以将相对低压的冷却剂供应到集气室,而不会在表面冷却膜中产生回流或翼展方向不连续的风险。 在本发明的一个具体实施例中,吸入侧肋端部(52,56)沿着吸力表面(38)跨过最小流体压力点,使得冷却剂流的正向冷却剂流动和翼展方向连续性可以通过 压力尽可能低,并且不会使吸力壁段SS暴露于过度的压力。
    • 7. 发明授权
    • Cooled rotor assembly for a turbine engine
    • 用于涡轮发动机的冷却转子组件
    • US5800124A
    • 1998-09-01
    • US631506
    • 1996-04-12
    • Mark F. Zelesky
    • Mark F. Zelesky
    • F01D5/06F01D5/08F01D5/30F01D11/00F02B77/02F02C7/18
    • F01D5/081F01D11/006F01D5/3015F05D2240/81Y02T50/671Y02T50/673Y02T50/676
    • A cooled rotor assembly for a gas turbine engine includes rotor blades (48) and a plurality of cover plates (86a) retained in the blade attachment slots (34) of a rotor disk (30). Each blade has a platform (46) with a trailing edge (58), and each cover plate includes at least one conduit (120, 126) for drawing leakage air from a plenum (102) in front of the disk and impinging that air against the platform trailing edges (58) to cool the tailing edges. In the preferred embodiment, each conduit (120) is defined by the rear face of a blade root (40) and a groove (122) cast into the cover plate. The invention makes productive use of leakage air by using that air to cool the platform trailing edges rather than allowing it to flow unbeneficially into the engine gaspath (24) in the vicinity of the platform leading edges (56).
    • 用于燃气涡轮发动机的冷却转子组件包括转子叶片(48)和保持在转子盘(30)的叶片附接槽(34)中的多个盖板(86a)。 每个叶片具有具有后缘(58)的平台(46),并且每个盖板包括至少一个导管(120,126),用于从盘前面的压力室(102)吸取泄漏的空气,并使空气抵抗 平台后缘(58)以冷却后缘。 在优选实施例中,每个导管(120)由叶片根部(40)的后表面和浇注到盖板中的凹槽(122)限定。 本发明通过使用该空气来冷却平台后缘,而不是使其不受益地流动到平台前缘附近的发动机气路(24)中,从而有效利用泄漏空气。