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Title: Gas turbine row #1 steam cooled vane

Abstract

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.

Inventors:
 [1]
  1. Longwood, FL
Issue Date:
Research Org.:
Westinghouse Electric Corp., Pittsburgh, PA (United States)
OSTI Identifier:
872831
Patent Number(s):
6019572
Assignee:
Siemens Westinghouse Power Corporation (Orlando, FL)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
DOE Contract Number:  
FC21-95MC32267
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
gas; turbine; row; steam; cooled; vane; design; segment; closed-loop; cooling; provided; comprises; outer; shroud; inner; airfoil; component; target; surface; inside; walls; plurality; rectangular; waffle; structures; enhance; heat; transfer; channel; systems; shrouds; improve; flow; insert; legs; located; cavities; leg; channels; perimeter; wall; impingement; holes; producing; jets; contact; substantially; rectangular-shaped; ribs; openings; minimize; degradation; outer shroud; outer wall; inside surface; heat transfer; gas turbine; target surface; inner shroud; vane segment; substantially rectangular; steam cooled; segment comprises; channel systems; /415/

Citation Formats

Cunha, Frank J. Gas turbine row #1 steam cooled vane. United States: N. p., 2000. Web.
Cunha, Frank J. Gas turbine row #1 steam cooled vane. United States.
Cunha, Frank J. Sat . "Gas turbine row #1 steam cooled vane". United States. https://www.osti.gov/servlets/purl/872831.
@article{osti_872831,
title = {Gas turbine row #1 steam cooled vane},
author = {Cunha, Frank J},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}