78 results about "Premixed flame" patented technology

In a combustor of a gas turbine which has a pilot nozzle being installed to the center of the axis of a combustor basket and a plurality of main nozzles being installed to the vicinity of the pilot nozzle and provided with a premixing tool on the outer circumference thereof, wherein, fuel being injected as air-fuel pre-mixture from the main nozzle into the interior of a transition piece forming a combustion chamber downstream of the combustor basket is ignited by diffusion flame being generated by the pilot nozzle in the transition piece so as to generate a premixed flame in the transition piece, wherein combustion is performed by a part of the plurality of main nozzles from start-up until a predetermined load rate and then performed by adding the remaining portion of the plurality of main nozzles when the predetermined load rate is exceeded.

In one embodiment, a premixer is provided for use, e.g., with trapped vortex (TVC) combustors, that injects premixed fuel and air directly into the recirculating vortex, in a manner compatible with natural vortex flow in the cavity.

Provided is a gas turbine combustor capable of reducing the size of a low-temperature air layer of pilot air formed between a pilot flame and a premixed flame and of improving the flame stability of the premixed flame. A gas turbine combustor, which is provided with a pilot burner that is provided at the center portion of a combustor main body formed in a cylindrical shape to form a pilot flame, and a plurality of main burners arranged so as to surround the outer periphery of the pilot burner to form a premixed flame, includes, as the ignition improving part, a channel blocking member that reduces the size of the low-temperature air layer of the pilot air formed between the pilot flame and the premixed flame.

Provides a micro gas burner with a stable, premixed flame that produces little or no soot or unburned hydrocarbons. A gas burner includes a fuel inlet, a nozzle, an oxidation chamber with at least one air inlet, a mixing chamber with a frusto-conical inner wall, at least one penetrable barrier, and a flame stabilizer. Gas burners thoroughly mix fuel and entrained air to form a nearly stoichiometric mixture prior to combustion. Gas burners thoroughly mix fuel and air, making them require lower fuel flow velocities than are required to produce a stable, premixed flame. Gas burners include optional flame tubes in which the flame is contained and isolated from diffusing air.

The invention relates to an active thermal regenerative method and a device of a collector for diesel micro particle. The method is as follows: liquid fuel, the boiling point of which is higher than normal temperature, is put into the tail gas of an engine or made into high pressure fuel vapor by being heated by electricity; after CPU sends a regeneration instruction, the oxygen content of regenerative environment is adjusted by supplementing auxiliary air and the fuel under high temperature steam enters combustion zone; meanwhile, an ignition plug begins to jump spark; fuel vapor is ignited Under the action of a twin-stage reverse whirl cone, premised flame is fixed on a proper position; heat from fuel burning makes gas flow temperature rise until the temperature of microparticle on filter element is above inflammation point; the microparticle on deposit is ignited when high temperature air flow passes by the filter element; the fuel should be continuously supplied until the microparticle on the deposit is burnt out; and a regenerative cycle is finished. In order to avoid the extreme high temperature of primary chamber part outside the collector, a gaseous film cooling structure is arranged. The active thermal regenerative method and device of the collector for diesel microparticle is easy to be ignited and has the characteristics of stable burning, efficient burning, strong anti-interference ability, little secondary pollution and stable action.