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Title: Self-regulating fuel staging port for turbine combustor

Abstract

A port (60) for axially staging fuel and air into a combustion gas flow path 28 of a turbine combustor (10A). A port enclosure (63) forms an air path through a combustor wall (30). Fuel injectors (64) in the enclosure provide convergent fuel streams (72) that oppose each other, thus converting velocity pressure to static pressure. This forms a flow stagnation zone (74) that acts as a valve on airflow (40, 41) through the port, in which the air outflow (41) is inversely proportion to the fuel flow (25). The fuel flow rate is controlled (65) in proportion to engine load. At high loads, more fuel and less air flow through the port, making more air available to the premixing assemblies (36).

Inventors:
; ;
Issue Date:
Research Org.:
Siemens Energy, Inc., Orlando, FL (USA)
Sponsoring Org.:
USDOE
OSTI Identifier:
1143661
Patent Number(s):
8769955
Application Number:
12/791,975
Assignee:
Siemens Energy, Inc. (Orlando, FL)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F23 - COMBUSTION APPARATUS F23R - GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
DOE Contract Number:  
FC26-05NT42644
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Van Nieuwenhuizen, William F., Fox, Timothy A., and Williams, Steven. Self-regulating fuel staging port for turbine combustor. United States: N. p., 2014. Web.
Van Nieuwenhuizen, William F., Fox, Timothy A., & Williams, Steven. Self-regulating fuel staging port for turbine combustor. United States.
Van Nieuwenhuizen, William F., Fox, Timothy A., and Williams, Steven. Tue . "Self-regulating fuel staging port for turbine combustor". United States. https://www.osti.gov/servlets/purl/1143661.
@article{osti_1143661,
title = {Self-regulating fuel staging port for turbine combustor},
author = {Van Nieuwenhuizen, William F. and Fox, Timothy A. and Williams, Steven},
abstractNote = {A port (60) for axially staging fuel and air into a combustion gas flow path 28 of a turbine combustor (10A). A port enclosure (63) forms an air path through a combustor wall (30). Fuel injectors (64) in the enclosure provide convergent fuel streams (72) that oppose each other, thus converting velocity pressure to static pressure. This forms a flow stagnation zone (74) that acts as a valve on airflow (40, 41) through the port, in which the air outflow (41) is inversely proportion to the fuel flow (25). The fuel flow rate is controlled (65) in proportion to engine load. At high loads, more fuel and less air flow through the port, making more air available to the premixing assemblies (36).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {7}
}

Patent:

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