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Title: Flashback resistant pre-mixer assembly

A pre-mixer assembly associated with a fuel supply system for mixing of air and fuel upstream from a main combustion zone in a gas turbine engine. The pre-mixer assembly includes a swirler assembly disposed about a fuel injector of the fuel supply system and a pre-mixer transition member. The swirler assembly includes a forward end defining an air inlet and an opposed aft end. The pre-mixer transition member has a forward end affixed to the aft end of the swirler assembly and an opposed aft end defining an outlet of the pre-mixer assembly. The aft end of the pre-mixer transition member is spaced from a base plate such that a gap is formed between the aft end of the pre-mixer transition member and the base plate for permitting a flow of purge air therethrough to increase a velocity of the air/fuel mixture exiting the pre-mixer assembly.
Authors:
 [1] ;  [1]
  1. Oviedo, FL
Publication Date:
OSTI Identifier:
1037005
Report Number(s):
8,113,000
US patent application 12/210,354
DOE Contract Number:
FC26-05NT42644
Resource Type:
Patent
Research Org:
Siemens Energy, Inc. (Orlando, FL)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS