TURBINE Russian patent published in 2018 - IPC F01D11/08 F01D25/24 

FIELD: motors and pumps.

SUBSTANCE: jet engine turbine comprises turbine casing, turbine blades, shroud. Turbine casing has a cylindrical shape. Turbine blades are rotatable about the axis of the turbine casing. Casing includes a plurality of shroud segments disposed circumferentially along the inner peripheral surface of the turbine casing and surrounding the turbine blades. Each of the shroud segments is formed with a first engagement part and a second engagement part. Shroud segment is attached to the turbine casing by engaging the first engagement part with the turbine casing in the axial direction of the turbine casing and engaging the second engagement part with the turbine casing in the radial direction of the turbine casing. Shroud segment has a stepped part for perceiving a radial force in the direction from the periphery to the center of the force from the tool to eliminate the state of engagement of the second engagement part with the turbine casing at the stage of separating the shroud segment from the turbine casing.

EFFECT: it is possible to easily perform dismantling operations while simultaneously reducing the reduction in engine performance and reducing the thermal fatigue of the turbine casing.

1 cl, 4 dwg