METHOD OF DISMOUNTING TURBOJET ENGINE, DEVICE FOR HEATING Russian patent published in 2017 - IPC F01D5/02 F01D25/28 F01D25/16 F02C7/36 B25B13/48 

FIELD: engine devices and pumps.

SUBSTANCE: two-shaft turbojet engine comprises a front fan, a high-pressure module with a high-pressure rotor, a low-pressure turbine module, an intermediate housing containing a thrust bearing of the high-pressure rotor. The high-pressure rotor is held in bearing by means of a connecting nut. When dismantling of said engine after removal of the low-pressure turbine module with corresponding shaft without removal of the fan, a heating device is introduced along the axis of the engine at the rear side into a central space freed by the module of low-pressure turbine, and heated from the inside by the connecting nut. After heating the connecting nut, the rear unscrewing tool is inserted and the unscrewing torque is applied thereto. At that the value of the torque is less than the value of forces that can destruct the teeth. In case of unsuccessful attempts to dismantle at the rear, removal of the fan is carried out, to release said connecting nut from the front the connecting nut is heated and the front unscrewing tool is arranged to apply the unscrewing torque to the connecting nut. Another invention of the group relates to a heating device for implementing said method and comprising a carriage with a tubular element mounted thereon. The tubular element is arranged with the possibility of introduction into said central space and equipped at one side with a facility for production of hot gas in the tubular element and a side hole at distance from said side.

EFFECT: group of inventions makes it possible to simplify the method for dismantling the two-shaft turbojet engine.

10 cl, 12 dwg