ASSEMBLY CONSISTING OF BLADE AND COOLING JACKET, AND GUIDE VANE OF GAS TURBINE ENGINE, WHICH CONTAINS THIS ASSEMBLY, AND INSTALLATION AND REPAIR METHOD OF THIS ASSEMBLY Russian patent published in 2012 - IPC F01D5/18 

FIELD: machine building.

SUBSTANCE: assembly consists of turbine blade and blade cooling jacket. Blade includes central cavity at least with the first hole to which cooling jacket containing a collar that is fixed on circular projection of the hole is introduced. On the collar end there provided is peripheral element of insulating layer which is located between wall of cooling jacket and wall of the hole in which the element of insulating layer creates pressure loss, thus performing the function of obstacle and (or) tight connection. Assembly repair method consists in the fact that collar of cooling jacket is cut to the level of circular projection; at that, element of insulating layer is not cut. Cooling jacket is removed from central body of blade through the hole. A new collar is put on cooling jacket. Cooling jacket with new collar is placed through the first hole into the blade cavity so that peripheral element of insulating layer is located between the wall of jacket and wall of the first hole. Collar is fixed on circular projection.

EFFECT: invention allows simplifying the assembly erection, reducing the production cost and providing the tightness of attachment on the collar level.

11 cl, 5 dwg