Multichannel plasma area igniting burner

Abstract

The invention discloses a multichannel plasma area igniting burner. The igniting burner comprises a plasma power supply, a nozzle, an air inlet fish nozzle, a tangential air hole, an air pipe, a hollow insulator, a high-voltage electrode, an insulation piece, a low-voltage electrode, a housing, a swirl chamber, air vents, barrier mediums, a low-speed area, center jet flow and a flame stabilization chamber. Fuel oil is atomized by the use of a splash plate disposed inside the air inlet pipe, mixed gas composed of high-speed rotation air-flow and direct current jet flow is disposed inside the igniting burner, and the two flows cool the igniting burner. The space between the high-voltage electrode and the low-voltage electrode is filled with the inflammable mixed gas flowing at a low speed, so that multi-point discharge and ignition can be carried out in a low-speed mixed gas area inside the igniting burner; and an on-duty high-temperature combustion thermonuclear area and the flame stabilization chamber have ignition source and flame stabilization functions and form a miniature high-speed combustion chamber, so that the combustion chamber can efficiently and reliably ignite and keep flames stable under poor conditions such as high-speed, low-temperature, low-pressure, coal firing and the like.

Description

technical field

[0001] The invention relates to the field of aerospace technology and the field of industrial combustion, in particular to a multi-channel plasma region ignition and combustion device. Background technique

[0002] Common ignition methods include hot surface, laser-induced spark, spark plug and plasma flow. They all heat the unburned gas mixture to increase its temperature, generate initial free radicals, and then initiate a chain reaction from these initial free radicals. For hot surface ignition, the ignition delay time is longer and the life is relatively short; laser-induced spark ignition requires focused high-energy laser pulses; spark plug ignition is a widely used and relatively reliable ignition method. The above-mentioned ignition methods all have the problem of small ignition area. When the combustion conditions are very bad, such as high-altitude low-pressure ignition, supersonic combustion, lean combustion, etc., the applicability and reliability...

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