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    • 7. 发明申请
    • VARIABLE TURBINE COOLING FLOW SYSTEM
    • 可变涡轮冷却流量系统
    • US20050132711A1
    • 2005-06-23
    • US10739754
    • 2003-12-17
    • Peter MorganWilliam HoweMark MorrisAdrian AllanDonald Palmer
    • Peter MorganWilliam HoweMark MorrisAdrian AllanDonald Palmer
    • F01D17/14F02C7/18F02C9/20F02C1/00
    • F02C9/20F01D17/141F02C7/18F05D2240/55F05D2240/57F05D2250/61Y10T137/7781
    • Cooling air to the blades and disks of a gas turbine may be modulated to provide a variable turbine cooling flow. A bellows may be extended by providing a high pressure compressor discharge flow to an interior of the bellows. The bellows may be compressed when the interior of the bellows communicates with ambient pressure air. The extension/compression of the bellows moves an arm over orifices in a cooling air flow path. The pressure inside of the bellows is metered to move the arm over at least one orifice, thereby restricting cooling air flow when the engine is running at low power. The pressure inside of the bellows is metered to move the arm to uncover all of the slots to provide maximum cooling flow when the engine is running at high power. The resulting variable cooling flow system results in less need for cooling air at low powers, thus reducing engine fuel consumption.
    • 可以调节到燃气轮机的叶片和盘的冷却空气以提供可变的涡轮机冷却流。 通过向波纹管的内部提供高压压缩机排出流,可以延伸波纹管。 当波纹管内部与环境压力空气相通时,波纹管可能被压缩。 波纹管的延伸/压缩将臂移动到冷却空气流动路径中的孔口上。 波纹管内部的压力被计量以将臂移动至少一个孔口,从而在发动机以低功率运行时限制冷却气流。 波纹管内部的压力被计量以移动臂以露出所有的槽,以在发动机以高功率运行时提供最大的冷却流量。 所产生的可变冷却流系统导致在低功率下对冷却空气的需求较少,从而降低发动机燃料消耗。