Electrical insulation structure for Hall thruster air supply pipeline

The invention provides an electrical insulation structure for a Hall thruster air supply pipeline and relates to the field of electrical insulation of electric thrusters. By the adoption of the electrical insulation structure for the Hall thruster air supply pipeline, the problems that in the prior art, an insulation failure of the outer side of a gas circuit insulator of a Hall thruster is caused by the flashover mechanism of a vacuum insulation edge surface and an insulation failure of the inner side of the insulator is caused by the low-pressure breakdown mechanism are solved. According to the electrical insulation structure for the Hall thruster air supply pipeline, the cross section of a ceramic insulator is shaped like the Chinese character 'shan', the outer surface of the ceramic insulator in of a cylindrical structure, the middle end of the ceramic insulator is of a convex groove structure, and by the adoption of the structure, the length of a creepage channel can be greatly increased in a limited space, and the degree of impact of the creepage channel by spatial plasmas under the action of an electric field of an electrode is decreased; and meanwhile, a gas distributor pipeline is wrapped in the ceramic insulator, bombardment of the insulator edge surface in the position which is high in potential and high in electric field intensity is reduced, and accordingly the insulation strength of the vacuum edge surface flashover resistance is improved.