FIXED NOZZLE BLADE OF STEAM TURBINE AND MEMBRANE OF STEAM TURBINE Russian patent published in 2016 - IPC F01D9/04 

FIELD: machine building.

SUBSTANCE: fixed nozzle blade of steam turbine and membrane of steam turbine contains aerodynamic part, and internal and external side walls, each is made as single part together with one of side of aerodynamic part. Each side wall, internal and external, has discharge side with arc-like concave surface, passing along full length of the side wall, and suction side with arc-like convex surface passing along full length of the side wall. The arc-like concave surface of internal side wall and arc-line concave surface of external side wall amend respectively the convex surface of internal side wall and arc-like convex surface of external side wall. Another invention of the group relates to membrane of the steam turbine, containing external ring, internal ring, and ring structure out of fixed nozzle blades, located between the internal and external rings, and multiple pairs of removed connections. Each blade is made, as said above, at that at least one of said blades is secured with possibility of dismounting to the second of said blades. Each of removed connections secures with possibility of removal one of blades to each ring of membrane.

EFFECT: group of inventions simplifies the blade dismounting from the membrane of steam turbine.

8 cl, 7 dwg