A combustion control system that collects and accumulates, at predetermined intervals, combustion controlling information including at least a signal indicating an operating state of an ignition device, a signal indicating the supplying state of fuel to a pilot burner, a signal indicating the supplying state of fuel to a main burner, a signal indicating the supplying state of air to the main burner, a flame detection signal indicating the strengths of the flames of the burners (the pilot burner and the main burner), and information indicating presence or absence of the flames determined based on the value of the flame detection signal, and displays the combustion controlling information as trend data of combustion control in a graph in such a form that the relationship between time zones of the combustion sequences from the start of a combustion device to normal combustion and the trend data is understandable.

According to an embodiment, a burner system includes a pilot burner disposed in a furnace at a distal position along a main fuel and combustion air flow axis, and one or more main fuel nozzles disposed at a proximal position along the main fuel and combustion air flow axis. The pilot burner is configured to support a pilot flame and the one or more main fuel nozzles are configured to support a main flame in contact with the pilot flame. The pilot burner is disposed to cause the main fuel and combustion air to be ignited by the pilot flame. The pilot burner may support a diffusion pilot flame or may include a premixing apparatus to support a pre-mixed flame.

Described herein are methods and systems for using pyrophoric liquids to ignite combustible gas.

According to an embodiment, a fired heater includes a fuel and combustion air source configured to output fuel and combustion air into a combustion volume, the combustion volume including a combustion volume wall defining a lateral extent separate from an exterior volume. According to an embodiment, the fired heater includes a boiler heater and the combustion volume wall comprises a combustion pipe defining a lateral extent of the combustion volume, the combustion pipe being disposed to separate the combustion volume from a water and steam volume. The fired heater includes a mixing tube aligned to receive the fuel and combustion air from the fuel and combustion air source. The mixing tube may be separated from the combustion volume wall by a separation volume. The fired heater includes a bluff body flame holder aligned to receive a fuel and combustion air mixture from an outlet end of the mixing tube. The bluff body flame holder may be configured to hold a combustion reaction for heating a combustion volume wall. The combustion volume wall may include a combustion pipe. The combustion pipe may be configured to heat the water in the water and steam volume.

The combustion apparatus includes a burner configured to generate flame, an ignition section configured to generate spark for igniting the burner, a flame detection section configured to detect the presence or absence of the flame of the burner, and a flame determination section configured to determine, based on a detection result of the flame detection section in a preset determination period, whether or not the flame is generated at the burner. When a predetermined condition is satisfied based on the detection result of the flame detection section in the determination period, the flame determination section determines that the flame is generated. The ignition section generates the spark across a particular period, in which the predetermined condition is not satisfied, of the determination period, and does not generate the spark in the remaining period of the determination period.

A combustion system such as a furnace or boiler includes a perforated reaction holder configured to hold a combustion reaction that produces very low oxides of nitrogen (NOx).

The present invention concerns an indication apparatus and corresponding method to indicate the output level of a pilot flame in a gas appliance provided with a thermocouple suitable to convert the energy generated by a pilot flame, which receives gas from a pilot valve, into electric voltage to power an electro valve of the pilot valve and to keep the latter open. The apparatus comprises a first and a second connector suitable to be coupled with a positive terminal and with a negative terminal of the thermocouple, a voltage measurement circuit connected to the first and the second connector, a lighting device configured to provide a light signal, a controller device coupled with the voltage measurement circuit and with the lighting device and configured to determine the switching on of the lighting device on the basis of the output supplied by the voltage measurement circuit to provide a user with an indication of when the voltage generated by the thermocouple is greater than or equal to a predefined value sufficient to power the electro valve.

A combustible gas heating apparatus includes: a main burner arranged in a combustion chamber of the apparatus, a pilot burner for generating a pilot flame for igniting it, a valve group comprising a main valve arranged on a main duct, and a pilot valve arranged thereon, upstream of the main valve, for supplying gas to the pilot burner, a system for controlling gas to the main and pilot burners, including an electronic control unit operatively associated with the main and pilot valves, a thermal safety device actuable in the presence of inflammable vapors near the apparatus, to safely extinguish the main burner when a predetermined temperature threshold has been exceeded, the pilot burner configured as a continuous pilot burner having a permanent flame, the pilot and main valves being electrically-operated valves, an auxiliary buffer battery configured to power the electronic control.

A premix burner for combusting premixed gas containing fuel and air mixed in advance includes a plurality of combustion nozzles including a first nozzle having an ignition rod disposed therein and a second nozzle other than the first nozzle, a first premixed gas passage for supplying the premixed gas to the first nozzle, and a second premixed gas passage for supplying the premixed gas to the second nozzle. The first premixed gas passage and the second premixed gas passage are fluidically isolated from each other.

Provided are a combustor nozzle, a gas turbine combustor, a gas turbine, a cover ring, and a combustor nozzle manufacturing method. The combustor nozzle includes: a nozzle body provided with a fuel flow passage; a cover ring that is disposed on an outer side of the nozzle body so as to form air flow passages that allow air to jet out toward a front side; and fuel injection nozzles that are provided in a leading end part of the nozzle body at predetermined intervals in a circumferential direction and extend through the cover ring so as to be able to inject fuel from the fuel flow passage toward the front side. The cover ring has an outer circumferential surface cover that covers an outer circumferential surface of the nozzle body, a leading end surface cover that covers a leading end surface of the nozzle body, and a plurality of inclined flow passages that extend through the leading end surface cover in a thickness direction and are inclined in a predetermined direction relative to a direction of a central axis.