PLACE OF MOUNTING OF WORKING BLADES AND LOW AND HIGH PRESSURE COMPRESSOR OF AVIATION ENGINES OF FIFTH GENERATION, ROTOR OF LOW PRESSURE COMPRESSOR AND ROTOR OF HIGH PRESSURE COMPRESSOR OF FIFTH GENERATION AVIATION ENGINE, WITH WORKING BLADES, FIXED WITH HELP OF DOVETAIL TYPE LOCKS IN RING GROOVES OF THESE DEVICES, METHOD OF ASSEMBLING PLACE OF MOUNTING WORKING BLADES OF ROTORS AND COMPRESSOR

FIELD: machine building.SUBSTANCE: group of inventions refers to the area of vibration damping of the booster working blades and the compressor of fifth generation aviation gas turbine engines. Fastening points for rotor blades of low and high pressure compressor rotors for fifth generation aircraft...

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Hauptverfasser: Garshin Egor Alekseevich, Ermakov Aleksandr Ivanovich, Eskin Izold Davidovich
Format: Patent
Sprache:eng ; rus
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Zusammenfassung:FIELD: machine building.SUBSTANCE: group of inventions refers to the area of vibration damping of the booster working blades and the compressor of fifth generation aviation gas turbine engines. Fastening points for rotor blades of low and high pressure compressor rotors for fifth generation aircraft engines, made in the form of an annular protrusion on the inner and outer surfaces, made in the form of a barrel of rotors of the low and high pressure compressor, in which an annular profiled groove is made from the side of the outer surface of the barrel, in which the dovetail type locks are fixed with working blades with platforms, in the annular groove in diametrically opposite places, grooves are made with such a width and length in the tangential direction, so that the blade lock with a rectangular transverse radial section with depth can be accommodated therein, equal to the depth of the annular groove, and in the grooves and notches in the platforms locks are fixed, limiting the displacement of the blades in the tangential direction, with the outer diameter of the impeller, measured by locks, equal to the outer diameter, measured by the platforms of the blades, characterized in that the annular shaped groove is made with a conical bottom, the axis of the conical bottom surface coincides with the longitudinal axis of the rotor of the compressor of low and high pressure, and the angle at the apex of this cone is chosen from the condition of creating the required value of preload between the padlocks and the elastic hysteresis element, providing support therefor, and the radial cross section of the annular profiled groove has the shape of a dovetail, connected at the base with a trapezium with vertical side walls, the height of the trapezium, along which it is connected to the dovetail figure, is equal in mmwhere b is the larger base of the dovetail figure, c is its smaller base,- the value by which the trapezoid stands for the magnitude of the larger base of the dovetail figure, equal in mmwhere δ - the tension in mm between the padlocks and the elastic hysteresis element, ϕ - the angle at the top of the cone bottom of the annular profiled groove, so that in one of the side walls of the protrusion of the attachment of working blades formed annular process groove with the greatest height, measured in a radial cross section equal in mm h=δ+H+0÷0.2, where H is the greatest height of the transverse radial section of the annular intermediate spacer, and the an