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    • 7. 发明申请
    • GAS TURBINE ENGINE LOCKOUT REDUCTION
    • 气体涡轮发动机闭锁
    • US20130125552A1
    • 2013-05-23
    • US13303338
    • 2011-11-23
    • Steve ShirooniMohamed Ahmed AliMark BrandsJohn Edward AltmanAbdus Shamim
    • Steve ShirooniMohamed Ahmed AliMark BrandsJohn Edward AltmanAbdus Shamim
    • F02C1/00
    • F01D25/34F01D11/24F01D21/00F01D25/08
    • A method is provided of reducing lockout time of a gas turbine engine which includes: an inlet, a compressor, a combustor, a turbine, and an exhaust duct, where the compressor and the turbine are carried on a turbomachinery rotor and each include an array of blades mounted for rotation inside a casing of the engine. The method includes: operating the engine at a first power output; shutting down operation of the engine without substantially reducing the power output beforehand, wherein thermomechanical changes occur in the engine subsequent to shutdown that tend to reduce a radial clearance between at least one of the blades and the casing; and subsequent to shutting down the engine, (1) heating the casing and/or (2) pumping an airflow of ambient air into the inlet and through the casing, past the rotor, and out the exhaust duct, so as to reverse at least partially the thermomechanical changes.
    • 提供一种减少燃气涡轮发动机的锁定时间的方法,其包括:入口,压缩机,燃烧器,涡轮机和排气管道,其中压缩机和涡轮机承载在涡轮机械转子上,并且每个包括阵列 的叶片,其安装用于在发动机的壳体内旋转。 该方法包括:在第一功率输出下操作发动机; 关闭发动机的运转,而不会事先大幅度地减小动力输出,其中在关闭之后在发动机中发生热机械变化,倾向于减小至少一个叶片和壳体之间的径向间隙; 并且在关闭发动机之后,(1)加热壳体和/或(2)将环境空气的气流泵入入口并穿过壳体,经过转子并排出排气管,以便至少反转 部分是热机械变化。