F23N5/16

Method and apparatus for mitigating premix burner combustion tone
11543126 · 2023-01-03 · ·

A method of calibrating a furnace includes determining a first flame stabilization period for the furnace that avoids detachment of a flame from a burner within a burner box of the furnace, determining a second flame stabilization period that is longer than the first flame stabilization period and avoids emission of a combustion tone from the furnace, and configuring a controller of the same or another furnace to utilize a flame stabilization period that has a duration between the first and second flame stabilization periods. Each flame stabilization period commences upon ignition of a premixed mixture of air and fuel at the burner while an inducer fan operates within a first range of fan speeds, and terminates when the rotational speed of the inducer fan increases to a second range speeds that is greater than the entire first range.

Method and apparatus for mitigating premix burner combustion tone
11543126 · 2023-01-03 · ·

A method of calibrating a furnace includes determining a first flame stabilization period for the furnace that avoids detachment of a flame from a burner within a burner box of the furnace, determining a second flame stabilization period that is longer than the first flame stabilization period and avoids emission of a combustion tone from the furnace, and configuring a controller of the same or another furnace to utilize a flame stabilization period that has a duration between the first and second flame stabilization periods. Each flame stabilization period commences upon ignition of a premixed mixture of air and fuel at the burner while an inducer fan operates within a first range of fan speeds, and terminates when the rotational speed of the inducer fan increases to a second range speeds that is greater than the entire first range.

Method for controlling a combustion apparatus and control device

A method for controlling a combustion apparatus having a combustion state in which a parameter related to the combustion state reflects a chaotic behavior is provided. The method includes the steps of measuring the parameter and determining a time series of the parameter, shifting the time series by a variable time delay for determining a time-shifted signal, and forming a difference between the time-shifted signal and the time series for determining a time dependent first signal, so that a norm of the difference is lowest. A time dependent second signal is determined, wherein determining the time dependent second signal includes at least one of using a frequency of a desired oscillating combustion state, and shifting the time series by a set time delay. The first signal and the second signal are combined to determine a control signal. The control signal is used to influence the combustion apparatus.

Processes and systems for analyzing images of a flare burner

Methods and systems for monitoring a flare burner with a camera. The methods and systems which may indicate to operators the presence or absence of one or more of smoke, flare flame, and steam plume and record those indications or measurements. Additionally, the methods and systems may confirm whether compliance with local regulations on visual emissions, smoke plume is achieved. The methods and systems automatically adjust the delivery rate of key inputs including measures assist fuel gas, purge gas, steam and/or air simultaneously to maintain or attain compliance with said local regulatory requirements. Also, methods for a machine learning process for using controller inputs to identify normal and abnormal flare states and provide visual indications and flare operation recommendations.

Processes and systems for analyzing images of a flare burner

Methods and systems for monitoring a flare burner with a camera. The methods and systems which may indicate to operators the presence or absence of one or more of smoke, flare flame, and steam plume and record those indications or measurements. Additionally, the methods and systems may confirm whether compliance with local regulations on visual emissions, smoke plume is achieved. The methods and systems automatically adjust the delivery rate of key inputs including measures assist fuel gas, purge gas, steam and/or air simultaneously to maintain or attain compliance with said local regulatory requirements. Also, methods for a machine learning process for using controller inputs to identify normal and abnormal flare states and provide visual indications and flare operation recommendations.

A METHOD FOR DETERMINING THE FLAME SHAPE OF A SWIRLING FLAME IN A CLOSED COMBUSTION CHAMBER
20230078555 · 2023-03-16 ·

The subject of the present patent is a method to determine the flame shape of a swirling flame in a steady-operating burner in a closed combustion chamber. The broadband combustion noise of the burner is sensed inside the combustion chamber, and the spectrum and the sound pressure levels are calculated from the acoustic vibrations of the process. The conclusions are made on this data to determine the flame shape. To determine the governing frequencies, the burner is investigated at various operating conditions. At least one parameter from the fuel flow rate, combustion air flow rate, and the swirl number is varied in the physically accessible range of the burner. The spectrum is divided into 0-500 Hz, 501-2000 Hz, and 2 kHz-6 kHz frequency ranges, then the amplitudes at the band center frequencies are calculated. Based on either the temporal analysis of band center frequencies or the temporal variation of their ratio or the two combined, the shape of the swirling flame can be determined.

A METHOD FOR DETERMINING THE FLAME SHAPE OF A SWIRLING FLAME IN A CLOSED COMBUSTION CHAMBER
20230078555 · 2023-03-16 ·

The subject of the present patent is a method to determine the flame shape of a swirling flame in a steady-operating burner in a closed combustion chamber. The broadband combustion noise of the burner is sensed inside the combustion chamber, and the spectrum and the sound pressure levels are calculated from the acoustic vibrations of the process. The conclusions are made on this data to determine the flame shape. To determine the governing frequencies, the burner is investigated at various operating conditions. At least one parameter from the fuel flow rate, combustion air flow rate, and the swirl number is varied in the physically accessible range of the burner. The spectrum is divided into 0-500 Hz, 501-2000 Hz, and 2 kHz-6 kHz frequency ranges, then the amplitudes at the band center frequencies are calculated. Based on either the temporal analysis of band center frequencies or the temporal variation of their ratio or the two combined, the shape of the swirling flame can be determined.

Burner health monitoring using vibration sensing

An electronic device and a method are disclosed. The electronic device includes a sensor, a memory, a processor, and a communication interface. The sensor is configured to detected vibrations of a burner system including any component of a burner system. The memory is configured to store the detected vibrations. The processor is configured to record the detected vibrations caused by the burner system at a predetermined time interval. The processor is also configured to generate a report of the recorded vibrations caused by a burner component to indicate the operational status of the burner, wherein the generated report includes at least two recorded vibrations. The communication interface configured to transmit the generated report.

DETECTING COMBUSTION ANOMALIES IN GAS TURBINES USING AUDIO OUTPUT

In one embodiment, a turbine system includes a combustion system comprising a plurality of combustion cans, a number of sensors, each of the number of sensors coupled to a respective combustion can of the number of combustion cans, and a controller. The controller includes a memory storing one or more processor-executable routines and a processor configured to access and execute the one or more routines encoded by the memory. The one or more routines, when executed cause the processor to receive one or more signals from the number of sensors, convert the one or more signals to audio output, and output the converted audio output via one or more audio output devices.

DETECTING COMBUSTION ANOMALIES IN GAS TURBINES USING AUDIO OUTPUT

In one embodiment, a turbine system includes a combustion system comprising a plurality of combustion cans, a number of sensors, each of the number of sensors coupled to a respective combustion can of the number of combustion cans, and a controller. The controller includes a memory storing one or more processor-executable routines and a processor configured to access and execute the one or more routines encoded by the memory. The one or more routines, when executed cause the processor to receive one or more signals from the number of sensors, convert the one or more signals to audio output, and output the converted audio output via one or more audio output devices.