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Title: Secondary fuel delivery system

Abstract

A secondary fuel delivery system for delivering a secondary stream of fuel and/or diluent to a secondary combustion zone located in the transition piece of a combustion engine, downstream of the engine primary combustion region is disclosed. The system includes a manifold formed integral to, and surrounding a portion of, the transition piece, a manifold inlet port, and a collection of injection nozzles. A flowsleeve augments fuel/diluent flow velocity and improves the system cooling effectiveness. Passive cooling elements, including effusion cooling holes located within the transition boundary and thermal-stress-dissipating gaps that resist thermal stress accumulation, provide supplemental heat dissipation in key areas. The system delivers a secondary fuel/diluent mixture to a secondary combustion zone located along the length of the transition piece, while reducing the impact of elevated vibration levels found within the transition piece and avoiding the heat dissipation difficulties often associated with traditional vibration reduction methods.

Inventors:
 [1];  [1];  [2];  [2]
  1. (Oviedo, FL)
  2. (Orlando, FL)
Publication Date:
Research Org.:
Siemens Energy, Inc. (Orlando, FL)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014194
Patent Number(s):
7,665,309
Application Number:
US Patent Application 12/210,356
Assignee:
Siemens Energy, Inc. (Orlando, FL) NETL
DOE Contract Number:  
FC26-05NT42644
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Parker, David M., Cai, Weidong, Garan, Daniel W., and Harris, Arthur J. Secondary fuel delivery system. United States: N. p., 2010. Web.
Parker, David M., Cai, Weidong, Garan, Daniel W., & Harris, Arthur J. Secondary fuel delivery system. United States.
Parker, David M., Cai, Weidong, Garan, Daniel W., and Harris, Arthur J. Tue . "Secondary fuel delivery system". United States. doi:. https://www.osti.gov/servlets/purl/1014194.
@article{osti_1014194,
title = {Secondary fuel delivery system},
author = {Parker, David M. and Cai, Weidong and Garan, Daniel W. and Harris, Arthur J.},
abstractNote = {A secondary fuel delivery system for delivering a secondary stream of fuel and/or diluent to a secondary combustion zone located in the transition piece of a combustion engine, downstream of the engine primary combustion region is disclosed. The system includes a manifold formed integral to, and surrounding a portion of, the transition piece, a manifold inlet port, and a collection of injection nozzles. A flowsleeve augments fuel/diluent flow velocity and improves the system cooling effectiveness. Passive cooling elements, including effusion cooling holes located within the transition boundary and thermal-stress-dissipating gaps that resist thermal stress accumulation, provide supplemental heat dissipation in key areas. The system delivers a secondary fuel/diluent mixture to a secondary combustion zone located along the length of the transition piece, while reducing the impact of elevated vibration levels found within the transition piece and avoiding the heat dissipation difficulties often associated with traditional vibration reduction methods.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 23 00:00:00 EST 2010},
month = {Tue Feb 23 00:00:00 EST 2010}
}

Patent:

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