Removable inner turbine shell with bucket tip clearance control
Patent
·
OSTI ID:873066
- Clifton Park, NY
- Niskayuna, NY
- Saratoga Springs, NY
- Amsterdam, NY
- Schenectady, NY
- Ballston Lake, NY
A turbine includes a plurality of inner shell sections mounting first and second stage nozzle and shroud portions. The inner shell sections are pinned to an outer containment shell formed of sections to preclude circumferential movement of the inner shell relative to the outer shell and enable thermal expansion and contraction of the inner shell relative to the outer shell. Positive bucket tip clearance control is afforded by passing a thermal medium about the inner shell in heat transfer relation with the shrouds about the first and second stage bucket tips, the thermal medium being provided from a source of heating/cooling fluid independent of the turbine. Access is provided to the rotor and turbine buckets by removing the outer and inner shell sections.
- Research Organization:
- General Electric Company (Schenectady, NY)
- DOE Contract Number:
- FC21-95MC31176
- Assignee:
- General Electric Co. (Schenectady, NY)
- Patent Number(s):
- US 6082963
- OSTI ID:
- 873066
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
/415/
access
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bucket
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circumferential
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containment
containment shell
contraction
control
cooling
cooling fluid
enable
expansion
fluid
formed
heat
heat transfer
heating
independent
inner
inner shell
inner turbine
medium
mounting
movement
nozzle
outer
outer containment
outer shell
passing
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plurality
portions
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removing
rotor
sections
sections mounting
shell
shell formed
shell section
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shroud portion
shrouds
source
stage
stage nozzle
thermal
thermal expansion
thermal medium
tip
tips
transfer
transfer relation
turbine
turbine bucket
turbine shell
access
afforded
bucket
buckets
circumferential
clearance
containment
containment shell
contraction
control
cooling
cooling fluid
enable
expansion
fluid
formed
heat
heat transfer
heating
independent
inner
inner shell
inner turbine
medium
mounting
movement
nozzle
outer
outer containment
outer shell
passing
pinned
plurality
portions
positive
preclude
provided
relation
relative
removable
removing
rotor
sections
sections mounting
shell
shell formed
shell section
shell sections
shroud
shroud portion
shrouds
source
stage
stage nozzle
thermal
thermal expansion
thermal medium
tip
tips
transfer
transfer relation
turbine
turbine bucket
turbine shell