Apparatus and methods for aligning holes through wheels and spacers and stacking the wheels and spacers to form a turbine rotor
- Greenville, SC
- Clifton Park, NY
A gas turbine rotor stacking fixture includes upstanding bolts for reception in aligned bolt holes in superposed aft disk, wheels and spacers and upstanding alignment rods received in openings of the disk, wheels and spacers during the rotor stacking assembly. The axially registering openings enable insertion of thin-walled tubes circumferentially about the rim of the rotor, with tight tolerances to the openings to provide supply and return steam for cooling buckets. The alignment rods have radial dimensions substantially less than their dimensions in a circumferential direction to allow for radial opening misalignment due to thermal expansion, tolerance stack-up and wheel-to-spacer mismatch due to rabbet mechanical growth. The circumferential dimension of the alignment rods affords tightly toleranced alignment of the openings through which the cooling tubes are installed.
- Research Organization:
- General Electric Co., Schenectady, NY (United States)
- DOE Contract Number:
- FC21-95MC31176
- Assignee:
- General Electric Co. (Schenectady, NY)
- Patent Number(s):
- US 6158102
- OSTI ID:
- 873429
- Country of Publication:
- United States
- Language:
- English
Similar Records
Liquid-cooled turbine rotor
Tuning thermal mismatch between turbine rotor parts with a thermal medium
Related Subjects
methods
aligning
holes
wheels
spacers
stacking
form
turbine
rotor
gas
fixture
upstanding
bolts
reception
aligned
bolt
superposed
disk
alignment
rods
received
openings
assembly
axially
registering
enable
insertion
thin-walled
tubes
circumferentially
rim
tight
tolerances
provide
supply
return
steam
cooling
buckets
radial
dimensions
substantially
circumferential
direction
allow
misalignment
due
thermal
expansion
tolerance
stack-up
wheel-to-spacer
mismatch
rabbet
mechanical
growth
dimension
affords
tightly
toleranced
installed
turbine rotor
thermal expansion
gas turbine
cooling tubes
cooling tube
bolt holes
circumferential direction
radial dimension
aligned bolt
/29/