A Controllable Plasma Jet Source Under Atmospheric Pressure

Abstract

The invention relates to a controllable plasma jet source in the atmospheric pressure environment. The controllable plasma jet source in the atmospheric pressure environment includes an anode system and a cathode system, wherein the anode system is formed by an anode and a magnetizer A; the cathode system is formed by a cathode and a magnetizer B; the magnetizers sleeve both the anode and the cathode; one end of the anode is connected with the positive pole of a power supply, and the other end of the anode and the cathode form a discharge pair; a group of magnetic coils fixedly sleeve one end of the magnetizer of the anode and one end of the magnetizer of the cathode respectively; the bottom of the magnetizer of the anode sleeves a driven gear; a helical blade is arranged on the driven gear; the helical blade winds around the external of the anode magnetizer; and the driven gear and a driving gear are connected to form a gear set. The controllable plasma jet source in the atmospheric pressure environment has the advantages of being simple in structure, being convenient to move and being convenient to adjust.

Description

technical field [0001] The invention relates to the field of plasma technology, in particular to a plasma jet source. Background technique [0002] Normally, when the temperature of a substance changes from low to high, the substance will successively go through three states: solid, liquid, and gas. Solids can be divided into conductors, semiconductors, and insulators according to their electrical conductivity; liquids can conduct electricity through positive and negative ions; gases generally do not conduct electricity. When the temperature rises further, the thermal motion of gas particles intensifies, causing strong collisions between particles, and electrons in a large number of atoms or molecules are knocked off, and the atoms and molecules in the gas will appear ionized and form plasma. Plasma generally has a large electrical conductivity. In terms of electromagnetic properties, plasma is completely different from ordinary gases. It is an unbound state system composed...

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Problems solved by technology

[0005] However, the generation conditions of the plasma flow are very harsh. According to the gas discharge theorem, it is difficult to form a plasma jet with a length that meets the requirements of industrial applications in an atmospheric pressure environment.

At present, low-pressure conditions are mainly formed by the auxiliary pumping system of the vacuum tank at home and abroad, and gas discharge is formed inside the vacuum tank to increase the jet length and jet density. However, the vacuum equipment is expensive and cannot be moved, and the processed materials need to be moved to the vacuum tank. Some processing materials will affect the pumping of the system, and the processing process cannot be completed in the vacuum tank

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