초록 ▼

A method of actively controlling the clearance between the rotating components and the stationary components of a combustion gas turbine engine includes employing an active control system that controls the temperature of bleed air that is delivered to the stationary and rotating components to contro

A method of actively controlling the clearance between the rotating components and the stationary components of a combustion gas turbine engine includes employing an active control system that controls the temperature of bleed air that is delivered to the stationary and rotating components to control the thermal growth thereof and to avoid a pinch point. The active control system includes one or more sensors and controls the operation of heat sources interposed within the air passages that deliver bleed air to the stationary and rotating components. The heat sources supply heat to the bleed air at specified rates responsive to a correction signal to control the thermal growth of the stationary and rotating components and to control the blade tip

대표청구항 ▼

1. A method of actively controlling a clearance between a first component and a second component of a combustion gas turbine engine during operation of the engine, the method comprising the steps of:taking a first measurement of the clearance with a sensor mechanism; comparing the first measurement

1. A method of actively controlling a clearance between a first component and a second component of a combustion gas turbine engine during operation of the engine, the method comprising the steps of:taking a first measurement of the clearance with a sensor mechanism; comparing the first measurement with a desired setting; generating a correction signal with a controller; supplying a first air flow to the first component, said first component having a first radial location; controlling the temperature of the first air flow responsive to the correction signal; supplying a second air flow to the second component, said second component having a second radial location, said clearance being located radially between said first and second components; and controlling the temperature of the second air flow responsive to the correction signal; whereby, said clearance is maintained by cooperative control of thermal growth of said first and second components.