TURBINE BLADE PLATFORM COOLING DEVICE AND METHOD OF SAID COOLING DEVICE MAKING Russian patent published in 2016 - IPC F01D5/18 F01D5/08 

FIELD: turbines.

SUBSTANCE: turbine working blade platform cooling device comprises platform arranged between blade aerodynamic part and blade root, and has inner cooling channel, passing in radial direction from connection point to cooling fluid medium source in blade root. Along side, which coincides with blade aerodynamic part high pressure side, upper side on platform high pressure side passes from blade aerodynamic part base to high pressure side mating surface. Device comprises main chamber, cooling holes. Main chamber is located only on upper side inner side on platform high pressure side, passes through platform from upstream end, having rear position to downstream end, having front position. Next to upstream located end main chamber comprises rear loop, and between rear loop and downstream located end contains front arc. Each of cooling openings extends from main chamber to port, made on high pressure side mating surface.

EFFECT: invention enables efficient cooling of turbine working blades platform area, is cost effective and flexible in use and durable.

20 cl, 8 dwg