NOZZLE WITH BLADE PROFILE TUBE FOR GAS TURBINE Russian patent published in 2020 - IPC F02C7/12 F01D9/02 F01D25/12 

FIELD: machine building.

SUBSTANCE: disclosed is blade-type nozzle (101) for gas turbine, comprising inlet section (108), convergent section (107) and outlet section (106). Inlet section (108) is section of annular channel, convergent section (107) contains multiple channels for gas flow separated by multiple blades (105), each channel for gas flow is girt with outer surface of peripheral wall (110), inner surface of peripheral wall (111), suction surface of one of two adjacent blades (105) and pressure surface of the other of two adjacent blades (105), and inlet holes (102) of channels for gas flow have a fan-shaped section. For each channel for gas flow along direction of gas flow from inlet hole (102) of channel for gas flow to outlet opening (103) fan-shaped section gradually smoothly changes into round section. Outlet section (106) comprises round tubes (104) with diameters invariable in axial direction, which correspond to each outlet (103) of channels for gas flow and are connected respectively.

EFFECT: compared to the blade type nozzle in the blade type nozzle, the number of blades can be considerably reduced without deterioration of characteristics.

7 cl, 8 dwg