An assembly structure and assembly method of a main cathode applied to a thruster

A technology of assembling structure and thruster, applied in thrust reverser, using plasma, machine/engine, etc., can solve the problem of difficulty in improving the cathode body, and achieve the effect of reducing the difficulty of sealing and ensuring the strength of sealing

Active Publication Date: 2022-05-06
HARBIN INST OF TECH
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Problems solved by technology

The cathode head is connected to the top of the cathode body through a detachable connection, which is convenient to control the length of the cathode head extending into the conical expansion section, but it is difficult to improve the cathode body to provide electrons for bombarding the working fluid to generate plasma. structure

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  • An assembly structure and assembly method of a main cathode applied to a thruster
  • An assembly structure and assembly method of a main cathode applied to a thruster
  • An assembly structure and assembly method of a main cathode applied to a thruster

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Embodiment Construction

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038]The purpose of the present invention is to provide an assembly structure and an assembly method for the main cathode of a thruster, so as to solve the above-mentioned problems in the prior art. By changing the length of the positioning member, the main cathode can be adjusted along the axis direction. The length extending into the discharge chamber of the thruster satisfies the requirement of frequently changing the axial positi...

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Abstract

The invention discloses an assembly structure of a main cathode applied to a thruster and an assembly method thereof. The main cathode is installed on a connection base through an insulating base, so that the main cathode and the connection base maintain an insulating state. Since the connection base is in a ring structure, And the annular structure is provided with several slots penetrating through its side wall along the circumferential direction. Positioning parts of different lengths can be replaced in the slots. The positioning parts are inserted into the slots and seal the gap between the slots and the insulating base. , the insulating base is lapped on the positioning piece through the connecting piece connected to it, then by changing the positioning pieces of different lengths, the axial position of the connecting piece on the connecting base is changed, and then the insulating base is driven to change its position on the connecting base. The axial position of the main cathode can be ensured to be insulated and sealed between the main cathode and the connection base, and the axial position of the main cathode relative to the discharge chamber of the thruster can be frequently changed to meet the experimental research on the thruster.

Description

technical field [0001] The invention relates to the field of ion electric thrusters, in particular to an assembly structure and an assembly method of a main cathode applied to a thruster. Background technique [0002] Prior art ion thrusters generate plasma within a discharge chamber and accelerate ions in the plasma to generate thrust. The discharge chamber is mainly composed of a main cathode and an anode. The main cathode needs to provide electrons for bombarding the working medium to generate plasma. In order to ensure the normal operation of the thruster, it is necessary to maintain the insulation between the main cathode and the anode. The main cathode is installed on the anode through its own flange. In the experimental study of the miniature ion thruster, the axial position of the main cathode relative to the discharge chamber needs to be changed frequently. The existing cathode installation structure cannot meet this requirement, and the thruster During the working...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03H1/00
CPCF03H1/0006
Inventor 杨鑫勇魏立秋韩亮王尚民李鸿丁永杰于达仁
Owner HARBIN INST OF TECH
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