Abstract:
Die vorliegende Erfindung betrifft eine Leitschaufelverstellvorrichtung einer Gasturbine mit einer Vielzahl von jeweils um eine radiale Achse 44 schwenkbaren Leitschaufeln 20, welche in zumindest zwei Radialebenen angeordnet sind, sowie mit zumindest einem Leitschaufelverstellring 29, welcher mit den jeweiligen Leitschaufeln 20 gekoppelt ist und mittels zumindest einer Betätigungsvorrichtung 30 in Umfangsrichtung drehbar ist, wobei die Betätigungsvorrichtung 30 ein Kurbelwellenelement 31 umfasst, welches mittels eines Aktuators 32 um eine ortsfeste Drehachse 33 verschwenkbar ist, dadurch gekennzeichnet, dass an dem Leitschaufelverstellring 29 gelenkig ein erster Hebel 34 angelenkt ist, dessen freies Ende gelenkig 35 mit einem mittleren Bereich eines zweiten Hebels 36 verbunden ist, wobei der zweite Hebel 36 an seinem einen Ende an einem ortsfesten Drehpunkt 37 gelagert ist und an seinem anderen Ende gelenkig 38 mit einem dritten Hebel 39 gekoppelt ist, welcher an seinem freien Ende gelenkig 40 an dem Kurbelwellenelement 31 gelagert ist.
Abstract:
A controller is intended for use in a gas turbine power plant that includes: a compressor 1 that compresses combustion air; a water atomization cooling apparatus 3 that sprays water drops of atomized water supplied via a water atomization flow rate regulating valve 13 over a flow of air drawn in the compressor 1; a combustor 2 that mixes the compressed combustion air with fuel to thereby burn a fuel-air mixture and generate combustion gas at high temperature and performs combustion switching during operation; a turbine 4 that uses the combustion gas to drive the compressor 1 and a generator; the water atomization flow rate regulating valve 13 that controls a flow rate of the atomized water; and a compressor inlet inner blade 11 that controls a flow rate of air drawn in the compressor 1. The controller includes control means 24 that calculates a fuel-air ratio correction command signal for compensating for reduction in a fuel-air ratio in the combustor 2 occurring during the combustion switching and, based on the fuel-air ratio correction command signal, controls an opening amount of the compressor inlet inner blade 11 or/and an opening amount of the water atomization flow rate regulating valve 13.
Abstract:
A system and method for controlling gas turbine 12 exhaust energy for a gas turbine 12 power plant 10 is disclosed herein. The system includes a gas turbine 12 having a combustor 16 downstream from a compressor 14, a turbine 18 disposed downstream from the combustor 16 and an exhaust duct 44 downstream from an outlet of the turbine 18. An exhaust gas damper 64 is operably connected to a downstream end 66 of the exhaust duct 44 and a compressed gas supply 68 is in fluid communication with the exhaust duct 44 downstream from the turbine outlet and upstream from the exhaust gas damper 64. During operation of the gas turbine 12, the exhaust gas damper 64 and the compressed gas supply 68 increase backpressure at the turbine outlet and restrict axial exit velocity of the exhaust gas 42 exiting the turbine outlet.
Abstract:
A method of controlling a variable vane assembly includes the steps of sensing a first angular deflection of a first array of variable vanes about a first vane axis, and a second angular deflection of a second array of variable vanes about a second vane axis, the first array of variable vanes axially spaced from the second array of variable vanes, and adjusting the angular deflection of one of the first and second arrays of variable vanes, based on the sensed angular deflections from the other of the first and second arrays of variable vanes. A compressor including the variable vane assembly and a method of operating the variable vane assembly for a compressor are also disclosed.
Abstract:
A method of controlling a variable area gas turbine engine (10) includes, running the variable area turbine engine (10) at initial settings, monitoring two sets of operating parameters of the engine at the initial settings, and deducing vane angles of adjustable vanes (106) without directly measuring the vane angles from mapped data of the two sets of operating parameters of a similar engine operated while direct vane angle measurements were being recorded.
Abstract:
The invention relates to a gas turbine (1) which comprises a compressor (2), a central housing (12), at least one combustion chamber (28), an expansion turbine (26), and a heat exchanger (68). Each combustion chamber (28) is fluidically connected to the expansion turbine (26) via an inner housing (24) which is guided through the interior (10) of the central housing (12). The compressor (2) is fluidically separated from the interior (10) of the central housing (12) by an annular collection chamber (16) which is connected to an outlet (8) of the compressor (2) and which has a number of discharge lines (20) which are connected to the cold side (72) of the heat exchanger (68) during operation. Each combustion chamber is designed as a silo combustion chamber (22), and each silo combustion chamber (28) has an inner wall (30), which delimits a combustion chamber (34), and an outer wall (40), and the outer wall (40) surrounds the inner wall (30), thereby forming a cavity (38). The inner wall (30) transitions into the inner housing (24), and the cavity (38) transitions into the interior (10) of the central housing (12).
Abstract:
A system and method of accommodating an uncontrolled high thrust condition in a turbofan gas turbine engine includes processing engine data from the turbofan gas turbine engine to determine when a potential for an uncontrolled high thrust condition exists. When the potential for an uncontrolled high thrust condition exists, the engine data are processed to determine whether corrective action for the uncontrolled high thrust condition should be implemented by varying turbofan gas turbine engine effective geometry to (i) increase turbofan gas turbine engine rotational speed or (ii) decrease turbofan gas turbine engine rotational speed. The determined corrective action is automatically implemented.
Abstract:
An annular airflow control system for a gas turbine engine includes a sync ring rotatable to move a multiple of contra-rotating variable vanes between an open position and a closed position to throttle an airflow through said multiple of contra-rotating variable vanes.
Abstract:
A method of controlling an exhaust gas recirculation (EGR) gas turbine system includes adjusting an angle of a plurality of inlet guide vanes of an exhaust gas compressor of the EGR gas turbine system, wherein the plurality of inlet guide vanes have a first range of motion defined by a minimum angle and a maximum angle, and wherein the angle is adjusted based on one or more monitored or modeled parameters of the EGR gas turbine system. The method further includes adjusting a pitch of a plurality of blower vanes of a recycle blower disposed upstream of the exhaust gas compressor, wherein the plurality of blower vanes have a second range of motion defined by a minimum pitch and a maximum pitch, and the pitch of the plurality of blower vanes is adjusted based at least on the angle of the plurality of inlet guide vanes.