Page 121 - Steam Turbines Design, Applications, and Rerating
P. 121
102 Chapter Five
Figure 5.15 Medium-sized condensing turbine
rotor after machining. This welded rotor will
receive reaction blading. (Asea Brown-Boveri,
Baden, Switzerland)
The rotors for these large turbines consist of a number of disks welded
together to form a single solid unit. The high-pressure rotor of a large
turbine as shown in Fig. 5.16 contributes 440 MW to the total turbine-
generator output of 1350 MW.
When building saturated steam turbines for nuclear power plants
with an output of about 1000 MW, the large component weights of
1800 or 1500 r/min units become very important. In the low-pressure
section for example, rotor weights between 150 and 200 tons and even
Figure 5.16 Reaction type utility turbine rotor after blade addition. (Asea
Brown-Boveri, Baden, Switzerland)
