MULTICYLINDER TURBINE Russian patent published in 2002 - IPC

FIELD: turbine manufacture. SUBSTANCE: proposed multicylinder turbine has high, medium and low-pressure cylinders resting by feet on cross keys secured on housing of bearings installed on foundation frames, and rods - pushers. The latter are made for transmission of part of axial force being installed between flanges of horizontal split or feet end faces. Cross keys are split and are installed in keyways of feet with preset values of clearances being pointed to corresponding cylinders. Such connection of cylinder housing provided with movable elements in key unit turning in response to displacement of cylinder housing foot improves sliding of foot along key, thus decreasing friction forces at all operating conditions of turbine, including starting and shutdown duties and providing free displacement of cylinder housing and turbine bearings. Moreover, rods- pushers secured on feet end faces and coupling cylinder housing, take up part of load from friction forces partially unloading key joints without leading to deformation of walls of cylinder housing and creating overturning moment in bearing housings. EFFECT: improved reliability of turbine. 2 dwg