Apparatus and methods for aligning holes through wheels and spacers and stacking the wheels and spacers to form a turbine rotor
Patent
·
OSTI ID:873429
- 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 Company (Schenectady, NY)
- 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
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Related Subjects
/29/
affords
aligned
aligned bolt
aligning
alignment
allow
apparatus
assembly
axially
bolt
bolt holes
bolts
buckets
circumferential
circumferential direction
circumferentially
cooling
cooling tube
cooling tubes
dimension
dimensions
direction
disk
due
enable
expansion
fixture
form
gas
gas turbine
growth
holes
insertion
installed
mechanical
methods
misalignment
mismatch
openings
provide
rabbet
radial
radial dimension
received
reception
registering
return
rim
rods
rotor
spacers
stack-up
stacking
steam
substantially
superposed
supply
thermal
thermal expansion
thin-walled
tight
tightly
tolerance
toleranced
tolerances
tubes
turbine
turbine rotor
upstanding
wheel-to-spacer
wheels
affords
aligned
aligned bolt
aligning
alignment
allow
apparatus
assembly
axially
bolt
bolt holes
bolts
buckets
circumferential
circumferential direction
circumferentially
cooling
cooling tube
cooling tubes
dimension
dimensions
direction
disk
due
enable
expansion
fixture
form
gas
gas turbine
growth
holes
insertion
installed
mechanical
methods
misalignment
mismatch
openings
provide
rabbet
radial
radial dimension
received
reception
registering
return
rim
rods
rotor
spacers
stack-up
stacking
steam
substantially
superposed
supply
thermal
thermal expansion
thin-walled
tight
tightly
tolerance
toleranced
tolerances
tubes
turbine
turbine rotor
upstanding
wheel-to-spacer
wheels