摘要:
A fuel injector for a gas turbine combustor is disclosed which includes a feed arm having a flange for mounting the injector within the combustor and a fuel nozzle (26) depending from the feed arm for injecting fuel into the combustor for combustion. An optical sensor array is operatively associated with the fuel nozzle for observing combustor flame characteristics. The optical sensor array includes a plurality of sapphire rods (194) positioned to be close enough to the combustor flame to oxidize soot deposits thereon.
摘要:
It is known that overshoot in fuel flow rate as a result of compensating for engine heat soak effects can create transient over values in desired thrust parameters. By adjusting the normally calculated fuel flow rate to a fuel regulator (22) by the introduction of a fuel flow adjustment dependent upon a variable which is related to heat soak effects it is possible to reduce the extent of overshoot as well as the transient time period of that overshoot to ongoing operational state. The variable used may be direct or indirect and will generally utilise a temperature sensor (25) within the engine and/or other engine control procedures which may be extrapolated from such sensor values to provide a variable for heat soak compensation.
摘要:
A turbine starting controller (10) includes: an optimum starting control unit (17) for predicting, while taking as a variable a turbine acceleration rate/load increase rate as a directly manipulated variable, thermal stress generated in a turbine rotor over a prediction period from a current time to the future, calculating for each control cycle a manipulated variable optimum transition pattern in the prediction period which makes a turbine starting time shortest while keeping the predicted thermal stress equal to or lower than a prescribed value, and determining as an actual optimum manipulated value a value at the current time in the manipulated variable optimum transition pattern; and an rpm/load control unit (18) to which the optimum manipulated variable from the optimum starting control unit (17) is input, for controlling the drive of control valves (13).
摘要:
Die Erfindung betrifft eine Gasturbine (1), mit einem Strömungspfad (20) für ein Heißgas (11), der von einer Kanalwand (22) umschlossen ist, mit zumindest einem in der Kanalwand (22) angeordneten Messfühler (26) zur Bestimmung eines Parameters des Heißgases (11), welcher Messfühler (26) eine temperaturbeständige und mit dem Heißgas (11) in Verbindung stehende Messspitze (30) und eine außerhalb des Strömungspfads (26) angeordnete in einer Schutzhülle (38) verlegte, Messleitung (34) aufweist. Um eine derartige Gasturbine (1) mit einer strukturell einfachen Schutzhülle (38) für Messleitungen (34) von Messfühlern (26) zu schaffen, in der die Messleitungen (34) kostengünstig verlegt und sicher vor unzulässig hohen Betriebstemperaturen geschützt sind, schlägt die Erfindung vor, dass die Schutzhülle (38) von einem Kühlmittel (42) durchströmbar ist, welches einer mit der Schutzhülle (38) verbundenen Kühlmittelquelle entnehmbar ist.
摘要:
Es soll ein Verfahren zur Betriebsüberwachung einer Gasturbine (1) mit einer Anzahl von jeweils eine thermische Schutzschicht (23), insbesondere eine TBC-Schutzschicht, aufweisenden und mit jeweils mindestens einem integriertem Kühlmittelkanal (29) versehenen Turbinenschaufeln (12, 14) angegeben werden, das auf möglichst einfache Weise eine zuverlässige Erkennung von Beschädigungen an der jeweiligen Schutzschicht (23) während des Betriebs der Gasturbine (1) ermöglicht. Dazu wird erfindungsgemäß anhand einer Temperaturerhöhung des im Kühlmittelkanal (29) einer Turbinenschaufel (12, 14) strömenden Kühlmittels (K), vorzugsweise Kühlluft, auf eine Beschädigung der thermischen Schutzschicht der Turbinenschaufel (12, 14) geschlossen.
摘要:
A device, for controlling an electric power generating system having a gas turbine (15), a compressor (12, 13), a combustion chamber (14), and an electric power generator (6) connected mechanically to the gas turbine, includes regulators (24, 25) supplying a first control signal (U FV ) for controlling fuel supply to the combustion chamber (14), and a second control signal (U IGV ) for controlling air intake by the compressor (12, 13). The regulators (24, 25) are configured to generate at least one of the first (U FV ) and second (U TGV ) control signals in sliding-mode control manner.
摘要:
Ein Verfahren zur Überwachung des Zustandes von Turbinen anhand ihrer Ausrollzeit soll möglichst empfindlich und mit geringem Aufwand durchführbar sein. Dazu wird die gemessene Ausrollzeit (t gemessen ) mit einem Korrekturglied, in das die ebenfalls gemessene Temperatur (T Medium ) des in der Turbine befindlichen Mediums einbezogen wird, korrigiert und mit einem Referenzwert verglichen.
摘要:
A method from discriminating between spurious and genuine surges in a gas turbine engine is provided which includes the steps of receiving an engine speed signal over a global engine surge investigation region that includes a plurality of operating regions (e.g. speed bands) in which engine surges can occur, identifying a specific operating region in which an engine surge event occurs, incrementing a surge counter corresponding to the operating region in which the engine surge event occurred, identifying the operating regions in which no engine surge event occurred, decrementing a surge counter corresponding to each operating region in which no engine surge event occurred; enabling a surge avoidance signal when the magnitude of the surge counter for a particular operating region has reached a predetermined value; and adapting an engine acceleration schedule in the operating region corresponds to the surge avoidance signal.
摘要:
The invention relates to a method for identifying the operating condition of a turbine (1) during operation. According to said method, a hot waste gas flows through a waste gas housing (9) and the temperature of the waste gas in said housing (9) is detected using temporal resolution. The aim of the invention is to provide a method for identifying the operating condition of a turbine (1) during operation, which identifies and displays systematic errors. To achieve this, the numerous measured temperature values for the waste gas are respectively detected using local resolution with reference to the origin of an imaginary Cartesian co-ordinate system. The focal point of the temperature distribution is then determined, a vector between the origin of the Cartesian co-ordinate system and the focal point of the temperature distribution being used as an indicator for the operating condition of the turbines.
摘要:
A method of engine starting in a gas turbine engine 10 comprises rotating the engine 10 to provide an air flow 36 into a combustor 20 of the engine 10 and injecting fuel into the combustor 20 at a varying rate until the engine is lighted-off. The varying rate of the fuel flow is a function of time and is represented by a curve 76 having at least one high frequency with respect to a light-off time, representing instant changes of the rate for intersecting a light-off zone while reducing a quantity of fuel injected into the combustor 20. After the light-off occurrence fuel is continuously injected into the combustor 20 to accelerate the engine 10 to a self-sustaining operation condition. This method of the present invention is adapted to find light-off points under various temperature and altitude conditions, thereby advantageously providing a rapid light-off, particularly under cold weather conditions.