Plasma sealing structure for discharge chamber of annular magnetic steel ring cutting field ion thruster

Abstract

The invention provides a plasma sealing structure for a discharge chamber of an annular magnetic steel ring cutting field ion thruster. The plasma sealing structure comprises a ceramic ring, a shielding cover and a Z-shaped sealing ring; peripheral equipment comprises a grid assembly, an anode, an insulation supporting assembly and a supporting ring of the ion thruster, and the anode is of a stepped cylinder structure and comprises a large-diameter cylinder and a small-diameter cylinder; the shielding cover is installed on the outer wall of the upper end of the small-diameter cylinder of the anode, the ceramic ring is located below the shielding cover and fixed to the end face between the large-diameter cylinder and the small-diameter cylinder of the anode, and the shielding cover shieldspart of the end face of the ceramic ring and the inner wall face of the ceramic ring to realize shielding and realize electric insulation between the anode and the grid assembly; and the horizontal end face of one side of the Z-shaped sealing ring is fixed to the bottom face of the grid assembly, and the horizontal end face of the other side is compressed at the top end of the ceramic ring to complete plasma sealing of the discharge chamber. The problems of electric insulation between the grid assembly and the anode of the ion thruster in a long-term plasma environment and plasma sealing of the discharge chamber are solved.

Description

technical field [0001] The invention relates to the technical field of aerospace electric propulsion, in particular to a plasma sealing structure for a discharge chamber of an annular magnetic steel annular tangential field ion thruster. Background technique [0002] As an advanced space propulsion technology, electric propulsion technology has been widely used in various space application fields. With the continuous deepening of human space exploration, the speed increment required for exploration tasks is getting larger and larger. Some large-speed incremental tasks can only be completed with the support of high-power, long-life ion-electric propulsion systems. [0003] The ion thruster is the core of the ion electric propulsion system, and other supporting units, such as power supply, storage and supply, and control, are all served by the ion thruster. High-power ion thrusters often have larger beam apertures. Under the same grid spacing and total accelerating voltage, ...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention provides a plasma sealing structure of the discharge chamber of the annular magnetic steel annular tangential field ion thruster, which solves the problem of electrical insulation and discharge chamber between the grid assembly and the anode of the ion thruster in a long-term plasma environment Plasma Sealing Issues

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