DOUBLE-LEVEL CYLINDER OF LOW PRESSURE OF CONDENSING STEAM TURBINE Russian patent published in 2009 - IPC F01D1/04 F01D5/02 F01D9/02 

FIELD: mechanical engineering.

SUBSTANCE: low-pressure cylinder contains one-level and double-level stages, consisting of nozzle and labour vanes, forming air-gas channels of bottom and top levels of cylinder. Blade row of top level corresponds air-gas channel independent turbines, build on turbine of bottom level and connected to it. In double-level stages labour vanes of top level are interlocked to labour vanes of bottom level in area of integral tyre the latter by continuous conic rings, corresponding root node of fixation of labour vanes of top level.

EFFECT: invention provides for reduction of losses, connected to fanning of double-level vanes, and flow-over between levels, and also reduction of laboriousness of manufacturing of double-level stages.

2 cl, 4 dwg