Single-path and double-path combined three-dimensional rotating sliding arc plasma exciter

Abstract

The invention discloses a single-path and double-path combined three-dimensional rotating sliding arc plasma exciter. The single-path and double-path combined three-dimensional rotating sliding arc plasma exciter comprises an inner-layer swirler, an outer-layer swirler, a cathode fuel nozzle, an inner-path anode metal ring, an outer-path anode metal ring and a cathode lip-shaped ring. The inner-layer swirler comprises a fuel nozzle interface, a first guide vane and an inner ring wall; when voltage is applied between the cathode fuel nozzle and the inner-path anode metal ring, a plasma arc is generated in a space between the cathode fuel nozzle and the inner-path anode metal ring; and the outer-layer swirler comprises a second guide vane and an outer ring wall, and when voltage is applied between the outer-path anode metal ring and the cathode lip-shaped ring, a plasma arc is generated in a space between the outer-path anode metal ring and the cathode lip-shaped ring. The inner-layer swirler and the outer-layer swirler are adopted, the inner and outer groups of electrodes can simultaneously generate plasma arcs, so that the reliability and the stability of mixed gas ignition are ensured, the mixed gas can be fully cracked and combusted, active particles are injected, the ignition boundary of a combustion chamber of an aero-engine is widened, and the combustion efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of aerodynamic plasma enhanced combustion, in particular to a three-dimensional rotary sliding arc plasma actuator combining single and double paths. Background technique [0002] At present, the combustion chambers of aviation turbine engines on most aircraft adopt the electric spark nozzle ignition method. This method has small ignition energy, narrow ignition range, and low ignition success rate, which cannot meet the requirements of the combustion chamber in a wide range of harsh conditions. Improved performance of aero-engines. [0003] Plasma ignition and combustion-supporting technology is a new technology emerging in recent years, because plasma has unique properties such as thermal effect, chemical effect and aerodynamic effect. The research results show that the use of plasma ignition can just meet the requirements of large-scale ignition of the combustion chamber. It has the following advantages...

AI Technical Summary

Problems solved by technology

However, the currently designed sliding arc plasma actuators at the head of the combustion chamber are all single-arc structures, and only one sliding arc acts on the gas mixing area at a time.

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