Patent ID: 8801428

Claim:
A combustor, comprising: a. an end cap that extends radially across at least a portion of the combustor, wherein the end cap comprises an upstream surface axially separated from a downstream surface and a cap shield circumferentially surrounding the upstream and downstream surfaces; b. a first set of premixer tubes extending from the upstream surface through the downstream surface to provide fluid communication through the end cap; c. a first fuel conduit in fluid communication with the first set of premixer tubes to supply fuel to the first set of premixer tubes; d. a second set of premixer tubes extending from the upstream surface through the downstream surface to provide fluid communication through the end cap; e. a casing circumferentially surrounding at least a portion of the cap shield to define an annular passage between the cap shield and the casing; f. a second fuel conduit in fluid communication with the second set of premixer tubes to supply fuel through the annular passage to the second set of premixer tubes g. a barrier disposed between the upstream and downstream surfaces, wherein the barrier at least partially defines a fuel plenum and an air plenum inside the end cap; and h. a divider disposed within the end cap separating fuel flows to the first and second sets of premix tubes.