Gas turbine row #1 steam cooled vane
- Longwood, FL
A design for a vane segment having a closed-loop steam cooling system is provided. The vane segment comprises an outer shroud, an inner shroud and an airfoil, each component having a target surface on the inside surface of its walls. A plurality of rectangular waffle structures are provided on the target surface to enhance heat transfer between each component and cooling steam. Channel systems are provided in the shrouds to improve the flow of steam through the shrouds. Insert legs located in cavities in the airfoil are also provided. Each insert leg comprises outer channels located on a perimeter of the leg, each outer channel having an outer wall and impingement holes on the outer wall for producing impingement jets of cooling steam to contact the airfoil's target surface. Each insert leg further comprises a plurality of substantially rectangular-shaped ribs located on the outer wall and a plurality of openings located between outer channels of the leg to minimize cross flow degradation.
- Research Organization:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- DOE Contract Number:
- FC21-95MC32267
- Assignee:
- Siemens Westinghouse Power Corporation (Orlando, FL)
- Patent Number(s):
- US 6019572
- OSTI ID:
- 872831
- Country of Publication:
- United States
- Language:
- English
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inner
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component
target
surface
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rectangular
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enhance
heat
transfer
channel
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insert
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cavities
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perimeter
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