Rotor cooling circuit
First Claim
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1. A cooling circuit in a rotor including a compressor rotor and a turbine rotor, the cooling circuit comprising:
- a source of cooled cooling air;
a first cooling path defined through openings in rotor wheels of the compressor rotor, the first cooling path directing the cooled cooling air across the rotor wheels and into a bore section of the compressor rotor; and
a second cooling path in series with the first cooling path, the second cooling path directing the cooled cooling air across rotor wheels of the turbine rotor.
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Abstract
A cooling circuit serves to provide cooling air in a rotor having a compressor rotor and a turbine rotor. The cooling circuit includes a first cooling path through the compressor rotor in series with a second cooling path through the turbine rotor such that one amount of cooling air is used for cooling both the compressor rotor and the turbine rotor. The construction enables a reduction in cooling air requirements, thereby increasing power plant efficiency.
32 Citations
11 Claims
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1. A cooling circuit in a rotor including a compressor rotor and a turbine rotor, the cooling circuit comprising:
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a source of cooled cooling air; a first cooling path defined through openings in rotor wheels of the compressor rotor, the first cooling path directing the cooled cooling air across the rotor wheels and into a bore section of the compressor rotor; and a second cooling path in series with the first cooling path, the second cooling path directing the cooled cooling air across rotor wheels of the turbine rotor. - View Dependent Claims (2, 3, 4, 5)
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6. A method of cooling a rotor including a compressor rotor and a turbine rotor, the method comprising:
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directing cooled cooling air along a first cooling path defined through openings in rotor wheels of the compressor rotor, the cooled cooling air being directed across the rotor wheels and into a bore section of the compressor rotor; and directing the cooled cooling air from the first cooling path along a second cooling path in series with the first cooling path, the cooled cooling air being directed across rotor wheels of the turbine. - View Dependent Claims (7, 8, 9)
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- 10. A cooling circuit in a rotor including a compressor rotor and a turbine rotor, the cooling circuit comprising a first cooling path through the compressor rotor in series with a second cooling path through the turbine rotor such that one amount of cooling air is used for cooling both the compressor rotor and the turbine rotor.
Specification