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Title: External combustor for gas turbine engine

Abstract

An external combustor for a gas turbine engine has a cyclonic combustion chamber into which combustible gas with entrained solids is introduced through an inlet port in a primary spiral swirl. A metal draft sleeve for conducting a hot gas discharge stream from the cyclonic combustion chamber is mounted on a circular end wall of the latter adjacent the combustible gas inlet. The draft sleeve is mounted concentrically in a cylindrical passage and cooperates with the passage in defining an annulus around the draft sleeve which is open to the cyclonic combustion chamber and which is connected to a source of secondary air. Secondary air issues from the annulus into the cyclonic combustion chamber at a velocity of three to five times the velocity of the combustible gas at the inlet port. The secondary air defines a hollow cylindrical extension of the draft sleeve and persists in the cyclonic combustion chamber a distance of about three to five times the diameter of the draft sleeve. The hollow cylindrical extension shields the drive sleeve from the inlet port to prevent discharge of combustible gas through the draft sleeve.

Inventors:
 [1];  [1];  [2]
  1. Indianapolis, IN
  2. Columbus, IN
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA
OSTI Identifier:
867867
Patent Number(s):
5024170
Assignee:
General Motors Corporation (Detroit, MI)
DOE Contract Number:  
AC04-76
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
external; combustor; gas; turbine; engine; cyclonic; combustion; chamber; combustible; entrained; solids; introduced; inlet; primary; spiral; swirl; metal; draft; sleeve; conducting; hot; discharge; stream; mounted; circular; wall; latter; adjacent; concentrically; cylindrical; passage; cooperates; defining; annulus; connected; source; secondary; air; issues; velocity; five; times; defines; hollow; extension; persists; distance; diameter; shields; drive; prevent; hollow cylindrical; gas inlet; turbine engine; combustion chamber; gas turbine; hot gas; combustible gas; secondary air; gas discharge; external combustor; entrained solid; entrained solids; /110/60/

Citation Formats

Santanam, Chandran B, Thomas, William H, and DeJulio, Emil R. External combustor for gas turbine engine. United States: N. p., 1991. Web.
Santanam, Chandran B, Thomas, William H, & DeJulio, Emil R. External combustor for gas turbine engine. United States.
Santanam, Chandran B, Thomas, William H, and DeJulio, Emil R. Tue . "External combustor for gas turbine engine". United States. https://www.osti.gov/servlets/purl/867867.
@article{osti_867867,
title = {External combustor for gas turbine engine},
author = {Santanam, Chandran B and Thomas, William H and DeJulio, Emil R},
abstractNote = {An external combustor for a gas turbine engine has a cyclonic combustion chamber into which combustible gas with entrained solids is introduced through an inlet port in a primary spiral swirl. A metal draft sleeve for conducting a hot gas discharge stream from the cyclonic combustion chamber is mounted on a circular end wall of the latter adjacent the combustible gas inlet. The draft sleeve is mounted concentrically in a cylindrical passage and cooperates with the passage in defining an annulus around the draft sleeve which is open to the cyclonic combustion chamber and which is connected to a source of secondary air. Secondary air issues from the annulus into the cyclonic combustion chamber at a velocity of three to five times the velocity of the combustible gas at the inlet port. The secondary air defines a hollow cylindrical extension of the draft sleeve and persists in the cyclonic combustion chamber a distance of about three to five times the diameter of the draft sleeve. The hollow cylindrical extension shields the drive sleeve from the inlet port to prevent discharge of combustible gas through the draft sleeve.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

Patent:

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