| 摘要 |
A combustor includes an end cap (24) having an upstream surface (30) axially separated from a downstream surface (32) and a cap shield (34) circumferentially surrounding the upstream and downstream surfaces (30,32). A first circuit (58) of tubes (24) extends from the upstream surface (30) through the downstream surface (32), and a first fuel plenum (50) is in fluid communication with the first circuit (58) of tubes (24). A second circuit (62) of tubes (24) extends from the upstream surface (30) through the downstream surface (32), and a second fuel plenum (52) downstream from the first fuel plenum (50) is in fluid communication with the second circuit (62) of tubes. A method for supplying fuel to a combustor includes flowing a working fluid through tubes (24), flowing fuel or diluent from a first fuel plenum (50) through a first circuit (58) of the tubes, and flowing fuel or diluent from a second fuel plenum (52) through a second circuit (62) of the tubes, wherein the second fuel plenum (52) is downstream from the first fuel plenum (50). |
