Cooling system for a bearing of a turbine rotor
Patent
·
OSTI ID:874727
- Niskayuna, NY
In a gas turbine, a bore tube assembly radially inwardly of an aft bearing conveys cooling steam to the buckets of the turbine and returns the cooling steam to a return. To cool the bearing and thermally insulate the bearing from the cooling steam paths, a radiation shield is spaced from the bore tube assembly by a dead air gap. Additionally, an air passageway is provided between the radiation shield and the inner surface of an aft shaft forming part of the rotor. Air is supplied from an inlet for flow along the passage and radially outwardly through bores in the aft shaft disk to cool the bearing and insulate it from transfer of heat from the cooling steam.
- Research Organization:
- General Electric Company (Schenectady, NY)
- DOE Contract Number:
- FC21-95MC31176
- Assignee:
- General Electric Company (Schenectady, NY)
- Patent Number(s):
- US 6450758
- OSTI ID:
- 874727
- Country of Publication:
- United States
- Language:
- English
Advances in Steam Path Technology
|
journal | April 1996 |
Development Requirements for an Advanced Gas Turbine System
|
journal | October 1995 |
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Related Subjects
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bores
buckets
conveys
cool
cooling
dead
disk
flow
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gap
gas
gas turbine
heat
inlet
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insulate
inwardly
outwardly
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air
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bore
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conveys
cool
cooling
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flow
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gap
gas
gas turbine
heat
inlet
inner
insulate
inwardly
outwardly
passage
passageway
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radially
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return
returns
rotor
shaft
shield
spaced
steam
supplied
surface
thermally
transfer
tube
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