Hybrid burner lance
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United States of America Patent
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Jun 21, 2011
Grant Date -
Sep 6, 2007
app pub date -
Feb 23, 2007
filing date -
Aug 23, 2004
priority date (Note) -
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Abstract
A lance for a hybrid burner of a combustor of a gas turbine, includes an inner passage for a liquid fuel, an outer passage coaxially enclosing the inner passage for a gaseous fuel, a plurality of star like arranged outer nozzles branching off radially from the outer passage, a plurality of inner nozzles, which branch off radially from the inner passage and which each extend coaxially inside one of the outer nozzles, and a distributor section, which is arranged upstream of the outer nozzles in the outer passage and has a plurality of star like arranged, coaxially extending through-openings for the gaseous fuel. In order to reduce the flow resistance in the gas path of the lance, the through-openings each have an opening width which is larger in the circumferential direction than in the radial direction.
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