FIELD: engines and pumps.
SUBSTANCE: method and device for preventing the passage of foreign objects into the inner path of ventilatory gas turbine engine to protect its parts from damage gas-and-air tract, based on inertial separation of heavy particles in rotary blade channels of ventilatory step and moving foreign objects away from the central sleeve zone of the ventilator in the peripheral zone in the outer engine. To implement a method and a device in the ventilator stages set barrier reflective racks to ensure effective separation of foreign objects in the radial direction in outer space within a tract of the axial ventilator stage, and prevent the passage of foreign objects into the inner path of ventilatory gas-turbine engine. The application of the method and the device does not cause a significant deterioration in the characteristics of the engine and can be used on different types of engines.
EFFECT: internal protected engine of the aisle tract foreign bodies in a wide range of distribution of their size, and in addition, echelon location of barrier reflective rack doesn't cause high ascending hydraulic resistance in blade channel.
5 cl, 9 dwg
