SEGMENTED TURBINE ROTOR, AND TURBINE Russian patent published in 2013 - IPC F01D5/06 

FIELD: machine building.

SUBSTANCE: segmented turbine rotor includes multiple rows of turbine blades and multiple rotor segments. The latter include the first rotor segment connected to the second rotor segment in joint. Joint includes different materials from each of the first and the second rotor segments. Each of the first and the second rotor segments includes material chosen from the group consisting of superalloy, martensitic stainless steel, low-alloy steel and titanium alloy. The first rotor segment of multiple rotor segments of segmented turbine rotor includes annular rotor segment having an axis that is actually parallel to central rotor axis. Annular rotor segment forms a cavity located in its centre and has outer surface supporting more than one row of multiple rows of turbine blades. Section of partition wall has the first end and the second end. The first end is located near central rotor axis. Flanged section is made as an integral part of the second end of partition wall section. Flanged section is located parallel to central axis, thus forming a cavity located between partition wall section and flanged section. Annular rotor segment has no partition wall section passing inwards radially, thus forming concentric cover. Besides, subject of invention is turbine containing external frame and above described segmented turbine rotor located inside external frame.

EFFECT: invention allows reducing weight of segmented rotor.

7 cl, 5 dwg