Fuel nozzle having respective arrays of pre-mixing conduits with respective vortex generators

Patent · Tue Jan 22 00:00:00 EST 2019

OSTI ID:1498532

Meadows, Joseph; Beck, Christian

A fuel nozzle including vortex generating features for use in a combustion turbine engine is provided. An array of inner pre-mixing conduits (20) extends between an inlet end (14) and an outlet end (16) of the nozzle. An array of outer pre-mixing conduits (22) may be disposed radially outwardly relative to the inner pre-mixing conduits (20). A fuel-directing tube (24) includes fuel-directing arms (26) structured to direct fuel flow into the outer pre-mixing conduits (22) to be mixed with a flow of air. The fuel-directing arms include a bluff structural arrangement (30) that may be disposed upstream of fuel injection locations (32, 32') into the outer pre-mixing conduits (22). The proposed nozzle is believed to provide superior micro-mixing capability, such as by increasing the depth of penetration of jets of fuel in a cross-flow of air, and/or formation of vortices in a wake zone downstream from the vortex generating features.

• Research Organization: Siemens Energy, Inc., Orlando, FL (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-05NT42644
• Assignee: Siemens Energy, Inc. (Orlando, FL)
• Patent Number(s): 10,184,666
• Application Number: 14/948,518
• OSTI ID: 1498532
• Resource Relation: Patent File Date: 2015 Nov 23
• Country of Publication: United States
• Language: English