Grid assembly assembly structure and assembly method of a miniature ion thruster
A technology of ion thruster and assembly structure, which is applied in the direction of reverse thrust device, plasma utilization, machine/engine, etc., can solve the contact between screen grid and acceleration grid, and is easy to deposit between screen grid and acceleration grid, screen grid and anode space, gate edge warpage, etc.
Active Publication Date: 2022-07-12
HARBIN INST OF TECH
View PDF25 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
During the operation of the ion thruster, some metal sputtering products will be generated, which are easily deposited between the screen grid and the acceleration grid, and between the screen grid and the anode, causing a short circuit
In addition, the grid is a set of metal sheets. During the operation of the thruster, the edge of the grid is prone to warping due to heat, resulting in contact between the screen grid and the acceleration grid, resulting in a short circuit
In order to prevent short circuits, for conventional ion thrusters, the screen grid and acceleration grid are installed on the thruster through a complex insulation structure, while for miniature ion thrusters, due to size constraints, it is difficult to use a complex installation structure for the grid
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027] 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.
[0028] The purpose of the present invention is to provide a grid assembly assembly structure and assembly method of a miniature ion thruster, so as to solve the above-mentioned problems in the prior art, simplify the grid assembly installation method and avoid short circuit between components.
[0029] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention wi...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| depth | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses an assembly structure and an assembly method of a grid assembly of a miniature ion thruster, comprising a ceramic base, a screen grid, an acceleration grid and a ceramic gasket. The ceramic base is fixed on the thruster main body by bolts, and the screen grid and the acceleration grid are installed On a ceramic base; both the screen grid and the acceleration grid are chemically etched from circular metal sheets. One side of the screen grid and the acceleration grid is kept flat, and the other side is the groove formed by the etching area. The etched area on the grid is equal to the cross-sectional area of the thruster body; grid holes are machined in the etched area on the screen grid and the acceleration grid; the grooved side of the screen grid faces the thruster body and is placed directly on the ceramic. On the base, the ceramic gasket is arranged between the screen grid and the acceleration grid, and the side of the acceleration grid with the groove faces the outside; the difference between the thicknesses of the ceramic gasket and the screen grid is the distance between the two grids. The present invention can simplify the installation method of the grid components and avoid the short circuit phenomenon between the components.
Description
technical field [0001] The invention relates to the technical field of miniature ion thrusters, in particular to a grid assembly assembly structure and an assembly method of a miniature ion thruster. Background technique [0002] Ion thrusters generate a strong electric field by applying a voltage of several thousand volts, which accelerates ions to generate thrust. The device used to accelerate ions in an ion thruster is called a grid. A common two-grid ion thruster uses a screen grid and an acceleration grid. A voltage is applied between the screen grid and the acceleration grid, and the ions pass through the screen grid and the acceleration grid. on the porous array ejected. During the operation of the ion thruster, some metal sputtering products are easily deposited between the screen grid and the accelerating grid, the screen grid and the anode, resulting in a short circuit. In addition, the grid is a group of metal sheets, and the edges of the grid are easily warped ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F03H1/00
CPCF03H1/0006
Inventor 杨鑫勇魏立秋李鸿丁永杰于达仁
Owner HARBIN INST OF TECH