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Hi all,
I would like to know the explanation of thermal expansion written on the generator manual.
GT model - GE Frame 9E
Generator model - GEC Alsthom T240-370
1. During turbine s/up - coupling face (between load shaft and generator) will shift toward turbine 7.46mm
2. During full load steady state - coupling face (between load shaft and generator) will shift toward generator 10.3mm and generator expansion is 6mm.
3. During turbine s/down - coupling face (between load shaft and generator) will shift toward generator 18.16mm
I don't understand this as GT thrust clearance is only 0.5-0.7mm.
I would like to know the explanation of thermal expansion written on the generator manual.
GT model - GE Frame 9E
Generator model - GEC Alsthom T240-370
1. During turbine s/up - coupling face (between load shaft and generator) will shift toward turbine 7.46mm
2. During full load steady state - coupling face (between load shaft and generator) will shift toward generator 10.3mm and generator expansion is 6mm.
3. During turbine s/down - coupling face (between load shaft and generator) will shift toward generator 18.16mm
I don't understand this as GT thrust clearance is only 0.5-0.7mm.