METHOD OF ASSEMBLY OF STEAM TURBINE WITH FORCED CENTERING OF HALF-COUPLINGS Russian patent published in 2013 - IPC F01D5/02 

FIELD: machine building.

SUBSTANCE: in assembly of steam turbine multi-seated shaft with high-, medium- and low-pressure cylinders, half-couplings of adjacent rotors are jointed with individual adjustment and fitting-in of distance bushes in mounting holes to receive bolts, each being provided with threaded ends for screwing on the nuts. Fitting-in is performed in controlled removal of bolts before screwing nut on threaded ends. Mounting holes of medium-pressure cylinder rotor are aligned with mate holes of low-pressure cylinder vaned rotor half-coupling so that aligned holes are located in circle next nearest of appropriate half-couplings. Individual set of distance bushes is fitted in aligned mounting holes as well as tightening bolts. Another half of mounting holes of medium-pressure cylinder rotor half-coupling are aligned with mate holes of low-pressure cylinder rotor half-coupling in replacing vaned rotor of the same cylinder. Individual set of distance bushes is fitted in aligned mounting holes as well as tightening bolts.

EFFECT: higher precision.

2 cl, 4 dwg