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Title: Trap seal for open circuit liquid cooled turbines

Abstract

An improved trap seal for open circuit liquid cooled turbines is disclosed. The trap seal of the present invention includes an annular recess formed in the supply conduit of cooling channels formed in the airfoil of the turbine buckets. A cylindrical insert is located in the annular recesses and has a plurality of axial grooves formed along the outer periphery thereof and a central recess formed in one end thereof. The axial grooves and central recess formed in the cylindrical insert cooperate with the annular recess to define a plurality of S-shaped trap seals which permit the passage of liquid coolant but prohibit passage of gaseous coolant.

Inventors:
 [1];  [2]
  1. Clifton Park, NY
  2. Ballston Lake, NY
Issue Date:
Research Org.:
General Electric Co., Boston, MA (United States)
OSTI Identifier:
863754
Patent Number(s):
4242045
Assignee:
General Electric Company (Schenectady, NY)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
DOE Contract Number:  
EX-76-C-01-1806
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
trap; seal; circuit; liquid; cooled; turbines; improved; disclosed; annular; recess; formed; supply; conduit; cooling; channels; airfoil; turbine; buckets; cylindrical; insert; located; recesses; plurality; axial; grooves; outer; periphery; central; cooperate; define; s-shaped; seals; permit; passage; coolant; prohibit; gaseous; cylindrical insert; annular recess; recess formed; channels formed; liquid coolant; outer periphery; cooling channels; liquid cooled; trap seal; annular recesses; circuit liquid; grooves formed; supply conduit; turbine bucket; cooled turbines; /416/

Citation Formats

Grondahl, Clayton M, and Germain, Malcolm R. Trap seal for open circuit liquid cooled turbines. United States: N. p., 1980. Web.
Grondahl, Clayton M, & Germain, Malcolm R. Trap seal for open circuit liquid cooled turbines. United States.
Grondahl, Clayton M, and Germain, Malcolm R. Tue . "Trap seal for open circuit liquid cooled turbines". United States. https://www.osti.gov/servlets/purl/863754.
@article{osti_863754,
title = {Trap seal for open circuit liquid cooled turbines},
author = {Grondahl, Clayton M and Germain, Malcolm R},
abstractNote = {An improved trap seal for open circuit liquid cooled turbines is disclosed. The trap seal of the present invention includes an annular recess formed in the supply conduit of cooling channels formed in the airfoil of the turbine buckets. A cylindrical insert is located in the annular recesses and has a plurality of axial grooves formed along the outer periphery thereof and a central recess formed in one end thereof. The axial grooves and central recess formed in the cylindrical insert cooperate with the annular recess to define a plurality of S-shaped trap seals which permit the passage of liquid coolant but prohibit passage of gaseous coolant.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

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