TURBINE COOLED BLADE Russian patent published in 2006 - IPC F01D5/18 

FIELD: turbines.

SUBSTANCE: proposed blade of turbine is provided with channels of convective cooling and film cooling of leading edge. Space to supply cooling air to leading edge of cooled blade of turbine is provided from one side with limiting diaphragm with hole in central part, and at other side, chamber to divide cooling air flow of leading edge with control rib. Cooled blade is provided also with space to discharge cooling air, perforation ribs, cleaning holes and channels of convective and film cooling of blade trailing edge. Space to supply cooling air to trailing edge of turbine cooled blade is furnished with limiting diaphragm with hole in central part at one side, and chamber to divide cooling air flow of trailing edge of turbine blade with control rib at other side. Space to supply cooling air, both for leading and trailing edges of turbine cooled blade, is connected through hole in central part of limiting diaphragm with film cooling channel. Chamber dividing cooling air flow, both for leading and trailing edges of turbine cooled blade, with control rib made in form of cone is connected with convective cooling channel.

EFFECT: improved efficiency of cooling of turbine blade owing to improved film cooling.

2 dwg