PLATFORM COOLING DEVICE AND INTERNAL COMBUSTION TURBINE ENGINE Russian patent published in 2016 - IPC F01D5/08 F01D5/18 

FIELD: machine building.

SUBSTANCE: platform cooling device, made in turbine working blade comprises platform arranged in aerodynamic part and root part coupling area. Operating blade has internal cooling channel made inside of it, which passes from connection with coolant source in root part approximately to platform height level in radial direction and at operation has area with cooling medium under high pressure and area with cooling medium under low pressure. Along side, which coincides with aerodynamic part low pressure side, platform low pressure side has upper side, passing in circumferential direction from aerodynamic part to mating surface on low pressure side. Platform low pressure side has rear edge, which coincides with aerodynamic part trailing edge. Platform cooling device comprises distributing element, high and low pressure connectors and heat transferring structure. Distributing element is located in at least one of front and rear parts of platform low pressure side. High-pressure connector connects distribution element with cooling medium under high pressure region, available in internal cooling channel. Low-pressure connector connects distribution element with cooling medium under low pressure region, available in internal cooling channel. Heat-transferring structure is arranged in distribution element with provision of interacting with cooling medium, passing from high-pressure connector to low pressure connector during operation.

EFFECT: invention is aimed at improving of working blades platform cooling efficiency, higher manufacturing efficiency and service life operational flexibility.

20 cl, 8 dwg