WORKING BLADE FOR GAS TURBINE, MANUFACTURING METHOD FOR SUCH BLADE AND GAS TURBINE WITH SUCH BLADE Russian patent published in 2015 - IPC F01D5/08 F01D5/18 

FIELD: machine building.

SUBSTANCE: working blade of a gas turbine comprises a profile part passing in the longitudinal direction and a blade root to fix the working blade on the gas turbine rotor shaft. The profile part of the working blade is provided with internal cooling channels. The cooling channels, preferably, pass in the longitudinal direction and can be supplied with cooling air by cooling air supplying units located inside the blade root. The working blade root is fitted with a channel passing in the transverse direction through the said working blade root and communicated with the cooling channels. An insert is introduced into the blade channel to set the final configuration and characteristics of connections between the blade channel and cooling channels. The blade channel is a cylindrical channel. The insert is of tubular form so it is wholly located inside the cylindrical channel. The insert wall is fitted by at least one nozzle through which one of the cooling channels is connected to the working blade channel and which defines the mass flow rate of cooling air supplied to one cooling channel.

EFFECT: invention is aimed at the optimization of cooling air distribution and supply, without simple design of a working blade being traded.

9 cl, 8 dwg