Gas-state fuel cyclone integrated igniter

Abstract

The invention provides a gas-state fuel cyclone integrated igniter, comprising a plasma igniter which is mainly formed by an inner electrode located at the center, a grounding electrode located outside the inner electrode, an insulating medium between the inner electrode and the grounding electrode, and a power supply connector, and further comprising a gas-state fuel cyclone device assembly which is mainly formed by a cyclone device assembly shell and cyclone devices mounted inside the cyclone device assembly shell, wherein the cyclone device assembly shell is annular; a plurality of the cyclone devices are uniformly distributed in the annular cyclone device assembly shell; the annular cyclone device assembly shell is provide with a gas-state fuel gas inlet; the plasma igniter is located in the annular cyclone device assembly shell; the grounding electrode is provided with a plurality of tangential gas inlet small holes; and the cyclone device assembly shell and the grounding electrode are integrally connected through a pressing cover. The gas-state fuel cyclone integrated igniter is applied to the field of heat energy and power engineering, can realize the reliability of ignition, and guarantees that a combustion speed reaches to a stable state.

Description

technical field [0001] The invention relates to a combustion chamber swirl gas supply and air plasma ignition device. Background technique [0002] The air plasma igniter is a new type of high-efficiency ignition equipment for igniting the combustion chamber of a gas turbine. It uses an arc to excite high-temperature air plasma to ignite the fuel. The advantage is that the success rate of ignition and the stability of combustion can be improved. At present, the igniter and gas fuel supply equipment in the combustion chamber adopt a cross distribution, and the axis crossing angle is 75-90°. The igniter and the gas fuel swirler are respectively arranged above the head and the center of the combustion chamber. Since the plasma igniter is applied to the flow field of gaseous fuel and air, when the velocity of air and fuel in the flow field is high, and the rigidity of the arc of the plasma igniter is not enough, it is easy to cause the inclination of the arc, thus affecting the...

AI Technical Summary

Problems solved by technology

Since the plasma igniter is applied to the flow field of gaseous fuel and air, when the velocity of air and fuel in the flow field is high, and the rigidity of the arc of the plasma igniter is not enough, it is easy to cause the inclination of the arc, thus affecting the effective length of ignition , the ignition success rate decreases

Moreover, in the gaseous fuel combustion chamber, in order to ensure ignition reliability, it is generally necessary to set duty nozzles, which increases the manufacturing cost and design difficulty

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