A cylindrical plasma generator and its application

Abstract

The invention discloses a cylindrical plasma generator and an application thereof. The cylindrical plasma generator comprises a generator outer cylinder, wherein a positive pole disc and a negative pole disc are arranged at the two ends of the generator outer cylinder respectively; the positive pole disc is provided with a positive pole rod, wherein the positive pole rod extends out of the generator outer cylinder to form a generator positive pole; a negative pole rod is arranged on the negative pole disc; discharge metal wires are arranged in the generator outer cylinder, and the two ends ofthe discharge metal wires are connected with the positive pole disc and the negative pole disc respectively; and grooves communicated with the inside and outside of the generator outer cylinder are axially and symmetrically formed in the cylinder wall of the generator outer cylinder. According to the generator, the plasma ablation wall surface is large, the pressure in the ablation space is controllable, and the quantity of the generated plasma is large, the generator can be directly used for a plasma generator of gunpowder ignition, and the problems of uniformity, consistency and controllability in the process of igniting the propellant powder by the plasma are solved.

Description

technical field [0001] The invention belongs to the field of plasma technology, in particular to a cylindrical plasma generator and its application, which can be directly used for the ignition of gunpowder. Background technique [0002] Plasma is an ionized gas-like substance composed of atoms deprived of some electrons and positive and negative ions generated after ionization of atomic groups. It is a macroscopically neutral ionized gas whose scale is larger than the Debye length. Its movement is mainly dominated by electromagnetic force and exhibits significant collective behavior. Depending on the application object, the plasma generator is also different. Capillary discharge plasma generators are commonly used in electrothermal chemical guns to generate thermal plasma and ignite the propellant by plasma. The structure of the capillary discharge plasma makes the direction of the plasma more constrained, and more plasma-state substances can be generated by ablation of the...

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Problems solved by technology

[0003] (1) The plasma is ejected from the bottom, which is not conducive to the uniform ignition and combustion of the propellant;

[0004] (2) The nozzle pressure is difficult to control, and it cannot be adjusted accurately during the ignition process of the propellant;

[0005] (3) The ablation area of ​​the capillary wall is small, and the generation of gas cannot be effectively adjusted

[0006] However, different ignition conditions are required under different propellants and charge conditions. In order to obtain ideal plasma ignition conditions, it cannot be achieved by existing technologies

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