Sliding Arc Plasma Excited Recessed Flame Holder

Abstract

Provided is a sliding arc plasma excitation type concave flame stabilizer, comprising an insulator (103), a first discharge electrode (101), a second discharge electrode (102), a third discharge electrode (104), and a fourth discharge electrode ( 105) composition; the first discharge electrode (101), the second discharge electrode (102), the third discharge electrode (104), and the fourth discharge electrode (105) respectively form the first and second groups of plasma exciters; the first The discharge electrode (101) and the fourth discharge electrode (105) are respectively connected with the anode of the plasma power supply (301), and the second discharge electrode (102) and the rectangular electrodes of the third discharge 104 are respectively connected with a plurality of coupling capacitors (302). ) are connected in series, and the other ends of the plurality of coupling capacitors (302) are all connected to the cathode of the plasma power supply (301). Compared with the existing concave cavity flame stabilizer, the sliding arc plasma excitation type concave cavity flame stabilizer of the present invention utilizes the oil and gas activation, cracking and heating functions of the enhanced multi-channel sliding arc plasma, which can be used without changing the original concave cavity flame stabilizer. On the basis of the structure of the cavity flame stabilizer, the probability of flame extinction is reduced and the flameout boundary is widened.

Description

technical field [0001] The invention belongs to the field of ramjet combustion chamber design, in particular to a sliding arc plasma excitation type concave flame stabilizer, which is suitable for stable combustion in a ramjet combustion chamber under the condition of low Mach number. Background technique [0002] Hypersonic aircraft has outstanding advantages such as strong penetration capability, wide attack range, and fast global reach. These unique advantages come from the use of a revolutionary power system - the ramjet. Compared with the turbine engine, the ramjet engine uses the ram effect of the incoming flow to pressurize the airflow, cancels the compressor and turbine components, and has a simple structure and light weight. However, this also brings a problem. When the ramjet works under the condition of low Mach number, the total pressure and total temperature of the incoming flow will decrease, which will cause the difficulty of atomization and evaporation of fu...

AI Technical Summary

Problems solved by technology

However, the mechanical adjustable structure will inevitably introduce more control mechanisms, the system is complex, and the volume and weight of the ramjet will increase.

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