摘要:
Flame acquisition system (1) for a combustion appliance (2) for combusting a combustion gas, in particular for a gas boiler, the system (1) comprising at least a flame sensor (4) to acquire the presence of a flame and for generating a flame signal, the flame sensor (4) being connectable to a control system (3) of the combustion appliance (2) for controlling the combustion appliance (2), and a converter (5) connectable to the flame sensor (4) to convert the flame signal generated by the flame sensor (4) into an electrical current used by the control system (3) for controlling the combustion appliance (2).
摘要:
Die Erfindung betrifft ein Verfahren und eine Anordnung zum Beobachten oder Überwachen von Flammen (22) in einem Verbrennungsraum (7) eines Heizgerätes (1), wobei eine Laufzeit eines Schallsignals von einem Ausgangspunkt zu mindestens einem Mikrofon (16) bestimmt wird und wobei das Schallsignal auf seinem Weg von dem Ausgangspunkt zum Mikrofon (16) zumindest teilweise durch einen von den Flammen (22) erhitzbaren Heiß-Bereich (21) verläuft. Insbesondere wird das Mikrofon (16) zur Aufnahme von Geräuschen oder Geräuschmustern genutzt, die mit bekannten Geräuschen oder Geräuschmustern verglichen werden, wodurch Informationen über den Zustand des Heizgerätes (1) und/oder Eigenschaften eines Verbrennungsprozesses im Verbrennungsraum (7) gewonnen werden. Die Erfindung erlaubt es, mit einer einfachen und robusten Instrumentierung an einem Heizgerät, insbesondere einem mit Wasserstoff oder wasserstoffhaltigem Brenngas betriebenen, einen akustischen Flammenwächter und die Messung anderer für eine Regelung wichtiger Größen zu verwirklichen.
摘要:
A combustor system (104) for a GT system may include: a plurality of burners (120, 120A-E, 120G, 1201, 120P), each burner (120, 120A-E, 120G, 1201, 120P) including an inflow region (124) for receiving a combustion air flow (126) and a mixing zone (128) disposed downstream of the inflow region (124) for receiving the air flow (126) and a fuel flow (130); a combustion chamber (105) disposed downstream of the mixing zone (128); a fuel flow valve system (140) disposed to control the fuel flow (130) to each of the plurality of burners (120, 120A-E, 120G, 1201, 120P); a combustion sensor (142) configured to determine a combustion parameter; and an exhaust sensor (144) configured to determine an exhaust parameter. A control system (160) may be connected to the combustion sensor (142), the exhaust sensor (144) and fuel flow valve system (140). The control system (160), in response to the gas turbine system (100) operating at a low partial load, redistributes the fuel flow (130) to at least one burner (120, 120A-E, 120G, 1201, 120P) of the plurality of burners (120, 120A-E, 120G, 1201, 120P) as a function of a predetermined emission limit.
摘要:
A system (10) and method each utilize combustion dynamics data to monitor and assess gas turbine combustor health and performance. The system (10) and method each employ a physics-based model (16) to differentiate changes in the spectral features attributable to variations in the operating conditions from differences caused from changes in the hardware.
摘要:
A multi-stage vortex mixer (90) for a combustor of a gas turbine engine includes a vortex amplifier stage (96) in communication with a first stage amplifier (110), the vortex amplifier stage in communication with a dilution hole (88).
摘要:
Method of determining at least one stability margin for a combustor (12), by obtaining modal characteristics of at least one spectral peak in the acoustic field, as well as determining the stability margin for the combustor (12) on the basis of the obtained modal characteristics, and an apparatus being adapted to carry out said method.
摘要:
A method for detecting malfunctions in a combustion chamber of a gas turbine plant includes providing dynamic pressure signals (P1 I , P2,...., P N ), each indicative of a dynamic pressure at the outlet of a respective burner of a combustion chamber of the plant. Frequency spectra (S 1 (f), S 2 (f),..., S N (f), S 1 *(f), S 2 * (f),..., S N *(f)) of the dynamic pressure signals (P 1 , P 2 ,..., P N ) are calculated, the malfunctions of the burners are recognized according to these spectra. Each burner subject to malfunctioning is identified according to a bijective correlation between the burners and the respective dynamic pressure signals (P 1 , P 2 ,..., P N ).
摘要:
Systems and methods for avoidance and correction of potentially adverse combustion states such as flame holding and flashback are disclosed. According to one embodiment of the disclosure, one or more sensors (116, 118, 120) acquire sensor data (114) from one or more sensors associated with combustion. An operational limit margin (OLM) is calculated using an OLM model and based at least in part on the sensor data (114). A determination is made as to the presence of a potentially adverse combustion state based at least in part on the OLM and the model. Once determined, corrective action may be taken to avoid an adverse combustion event prior to occurrence of the event.