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Title: Turbomachine rotor with improved cooling

Abstract

A gas turbine rotor has an essentially closed loop cooling air scheme in which cooling air drawn from the compressor discharge air that is supplied to the combustion chamber is further compressed, cooled, and then directed to the aft end of the turbine rotor. Downstream seal rings attached to the downstream face of each rotor disc direct the cooling air over the downstream disc face, thereby cooling it, and then to cooling air passages formed in the rotating blades. Upstream seal rings attached to the upstream face of each disc direct the heated cooling air away from the blade root while keeping the disc thermally isolated from the heated cooling air. From each upstream seal ring, the heated cooling air flows through passages in the upstream discs and is then combined and returned to the combustion chamber from which it was drawn.

Inventors:
 [1];  [2];  [3];  [4]
  1. (Winter Park, FL)
  2. (Winter Springs, FL)
  3. (Titusville, FL)
  4. (Oviedo, FL)
Publication Date:
Research Org.:
WESTINGHOUSE ELECTRIC CORP
OSTI Identifier:
871567
Patent Number(s):
US 5755556
Assignee:
Westinghouse Electric Corporation (Pittsburgh, PA) NETL
DOE Contract Number:  
AC21-93MC30247
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
turbomachine; rotor; improved; cooling; gas; turbine; essentially; closed; loop; air; scheme; drawn; compressor; discharge; supplied; combustion; chamber; compressed; cooled; directed; downstream; seal; rings; attached; disc; direct; passages; formed; rotating; blades; upstream; heated; blade; root; keeping; thermally; isolated; flows; discs; combined; returned; rotating blade; passages formed; air passage; seal rings; turbine rotor; air flows; cooling air; closed loop; combustion chamber; gas turbine; air flow; compressor discharge; rotor disc; machine rotor; air passages; rings attached; air drawn; loop cooling; discharge air; improved cooling; charge air; thermally isolate; blade root; /416/60/

Citation Formats

Hultgren, Kent Goran, McLaurin, Leroy Dixon, Bertsch, Oran Leroy, and Lowe, Perry Eugene. Turbomachine rotor with improved cooling. United States: N. p., 1998. Web.
Hultgren, Kent Goran, McLaurin, Leroy Dixon, Bertsch, Oran Leroy, & Lowe, Perry Eugene. Turbomachine rotor with improved cooling. United States.
Hultgren, Kent Goran, McLaurin, Leroy Dixon, Bertsch, Oran Leroy, and Lowe, Perry Eugene. Thu . "Turbomachine rotor with improved cooling". United States. https://www.osti.gov/servlets/purl/871567.
@article{osti_871567,
title = {Turbomachine rotor with improved cooling},
author = {Hultgren, Kent Goran and McLaurin, Leroy Dixon and Bertsch, Oran Leroy and Lowe, Perry Eugene},
abstractNote = {A gas turbine rotor has an essentially closed loop cooling air scheme in which cooling air drawn from the compressor discharge air that is supplied to the combustion chamber is further compressed, cooled, and then directed to the aft end of the turbine rotor. Downstream seal rings attached to the downstream face of each rotor disc direct the cooling air over the downstream disc face, thereby cooling it, and then to cooling air passages formed in the rotating blades. Upstream seal rings attached to the upstream face of each disc direct the heated cooling air away from the blade root while keeping the disc thermally isolated from the heated cooling air. From each upstream seal ring, the heated cooling air flows through passages in the upstream discs and is then combined and returned to the combustion chamber from which it was drawn.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}

Patent:

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