TURBINE OUTLET DEVICE Russian patent published in 2014 - IPC F01D25/30 F01D9/02 

FIELD: machine building.

SUBSTANCE: turbine outlet device comprises hollow aerodynamic profiled supports located after the runner of the last turbine stage as well as aerodynamic profiled contours. The contours are formed by the front and rear blades set between the supports with displacement in respect to each other. The mean lines of input zones of the contours and input zones of the profiled supports are turned to the turbine longitudinal axis by 20-40° in the direction of the rotation of the last turbine stage runner. The mean lines of the output zones of the contours are directed along the turbine longitudinal axis. The blades are set with displacement in respect to each other at the distance equal to 0.03-0.15 of the length of the front blade chord. Along the contour chord the blades are set in the position of matching the front of the exit edge of the front blade and the front of the leading edge of the rear blade or are displaced in respect to the latter. The number of the contours set between the supports is determined by the dependence protected by the present invention.

EFFECT: invention allows for increasing the efficiency of the last turbine stage and reduction of swirling of the output flow.

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