Abstract:
A bi-directional end cover assembly (14) for a gas turbine combustor comprising an end cover plate provided with plural nozzle supports (34), at least one fuel inlet, and at least one diluent manifold (36; 38) communicating with an annular internal passage (40) provided with plural outlet apertures (42) which open to a combustion chamber of the combustor; one or more conduits adapted, in use, to supply a diluent to the at least one diluent manifold (36; 38) and to the annular internal passage (40) in a diluent-injection mode; one or more conduits adapted, in use, to extract working fluid from the combustion chamber via the annular internal passage (40) and the at least one diluent manifold in a working-fluid-extraction mode; and control valves (46; 54) for selectively controlling flow of the diluent in the diluent-injection mode and flow of working fluid in the working-fluid-extraction mode.
Abstract:
A method includes combusting a fuel and an oxidant in a combustor of an exhaust gas recirculation (EGR) gas turbine system that produces electrical power and provides a portion of the electrical power to an electrical grid. The method further includes controlling, via one or more processors, one or more parameters of the EGR gas turbine system to decrease the portion of the electrical power provided to the electrical grid in response to an over-frequency event associated with the electrical grid, wherein controlling the one or more parameters comprises decreasing a flow rate of fuel to the combustor in response to the over-frequency event.
Abstract:
A turbomachine combustor assembly includes a combustor body (20), and a combustor liner (24) arranged within the combustor body (20). The combustor liner (24) defines a combustion chamber (30) having a head end (32) and a discharge end (37). A plurality of combustor nozzles (44-49) are arranged in an annular array at the head end (32) of the combustion chamber (30), and a fluid delivery nozzle (90) is arranged substantially centrally within the annular array at the head end (32) of the combustion chamber (30). The fluid delivery nozzle (90) includes a first end portion (98) that extends to a second end portion (99) through a wall portion (100). The wall portion (100) includes at least one combustion chamber outlet (113). The fluid delivery nozzle (90) is configured to deliver a non-combustible fluid into the at least one of the plurality of combustor nozzles (44-49) and the combustion chamber (30).
Abstract:
A system includes a turbine combustor. The turbine combustor has a combustor liner disposed about a combustion chamber, a flow sleeve, and a radial passageway. The flow sleeve disposed at an offset about the combustor liner to define a passage, wherein the passage is configured to direct an exhaust gas flow toward a head end of the turbine combustor. The radial passageway extends between the flow sleeve and the combustor liner, and the radial passageway is configured to isolate an oxidant flow through the radial passageway from the exhaust gas flow through the passage for a first operating condition and a second operating condition of the turbine combustor. The offset between the combustor liner and the flow sleeve at the first operating condition is greater than the offset between the combustor liner and the flow sleeve at the second operating condition.
Abstract:
A turbomachine combustor assembly includes a combustor body (20), and a combustor liner (24) arranged within the combustor body (20). The combustor liner (24) defines a combustion chamber (30) having a head end (32) and a discharge end (37). A plurality of combustor nozzles (44-49) are arranged in an annular array at the head end (32) of the combustion chamber (30), and a fluid delivery nozzle (90) is arranged substantially centrally within the annular array at the head end (32) of the combustion chamber (30). The fluid delivery nozzle (90) includes a first end portion (98) that extends to a second end portion (99) through a wall portion (100). The wall portion (100) includes at least one combustion chamber outlet (113). The fluid delivery nozzle (90) is configured to deliver a non-combustible fluid into the at least one of the plurality of combustor nozzles (44-49) and the combustion chamber (30).