Electrical insulation structure for Hall thruster air supply pipeline

A technology of Hall thruster and air supply pipeline, applied in thrust reverser, using plasma, machine/engine, etc., can solve problems such as insulation failure, and achieve the effects of good insulation performance, improved insulation strength, and long life.

Active Publication Date: 2016-08-10
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problem of insulation failure caused by vacuum insulation surface flashover mechanism on the outside of the existing Hall thruster gas circuit insulator and insulation failure caused by low pressure breakdown mechanism on the inside of the insulator

Method used

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  • Electrical insulation structure for Hall thruster air supply pipeline
  • Electrical insulation structure for Hall thruster air supply pipeline
  • Electrical insulation structure for Hall thruster air supply pipeline

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0018] Specific implementation mode 1: refer to Figure 1 to Figure 4 To specifically describe this embodiment, the electrical insulation structure for the Hall thruster gas supply pipeline described in this embodiment includes a gas distributor pipeline 1, a ceramic insulator 2 and a metal port 3 for a storage and supply system.

[0019] The cross section of the ceramic insulator 2 is a "mountain" type structure, and the outer surface of the ceramic insulator 2 is a cylindrical structure, and the middle end of the ceramic insulator 2 is a convex groove structure,

[0020] The metal port 3 of the storage and supply system is wrapped at the bottom of the ceramic insulator 2, the groove structure of the gas distributor pipeline 1 is connected with the convex groove structure of the ceramic insulator 2, and the ceramic insulator 2 wraps the gas distributor pipeline 1 inside,

[0021] The gas distributor pipeline 1, the ceramic insulator 2 and the inner cavity of the metal port 3 ...

specific Embodiment approach 2

[0027] Embodiment 2: This embodiment further describes the electrical insulation structure for the Hall thruster gas supply pipeline described in Embodiment 1. In this embodiment, the metal port 3 of the storage and supply system and the bottom of the ceramic insulator 2 Solder connections.

specific Embodiment approach 3

[0028] Embodiment 3: This embodiment further describes the electrical insulation structure for the Hall thruster gas supply pipeline described in Embodiment 1. In this embodiment, the middle end of the ceramic insulator 2 is connected to the gas distributor pipe. Way 1 solder connection.

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Abstract

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.

Description

technical field [0001] The invention relates to an insulation design mainly used for electrical insulation of electric thrusters, and the design can be used for the insulation of gas supply pipelines in electric thrusters whose potential difference is lower than 1000V. Background technique [0002] Compared with other electric propulsion devices, the Hall thruster has the advantages of simple structure, greater thrust, higher efficiency and reliability. After more than 40 years of theoretical research and practical application, the engineering research and design of Hall thruster abroad has been very mature. . At present, my country is in the stage of vigorously developing electric propulsion technology, and the research work of Hall thruster in engineering application is still in its infancy. Among them, it is extremely important to ensure the electrical insulation safety of Hall thruster and its high reliability. step. Different from the insulation research and design of ...

Claims

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Application Information

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IPC IPC(8): F03H1/00
CPCF03H1/0037
Inventor 丁永杰魏立秋李鸿于达仁
Owner HARBIN INST OF TECH
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