Electron gun

An electron gun and grid technology, applied in the field of electron guns, can solve the problems of short service life and achieve the effects of long service life, high reliability and stability, and high concentration

Inactive Publication Date: 2017-06-09
INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an electron gun, which solves the problem of short service life of

Method used

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  • Electron gun
  • Electron gun
  • Electron gun

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Example Embodiment

[0024] Example

[0025] Such as Figure 1 to 4 As shown, an electron gun of the present invention includes a hollow support assembly 2, a cathode assembly 1 is installed in the support assembly 2, and a grid matching the cathode assembly 1 is fixedly installed at the upper end of the support assembly 2 through a grid pressing ring 5. The net 4 also includes a pin assembly 3 connected to the support assembly 2 and the cathode assembly 1, wherein the support assembly 2 includes a cathode assembly support ring 201, a grid support ring 202, a support mounting ring 203, a support insulating ceramic cylinder 204, and support installation The ring 203 is used as the base of the support assembly to be fixedly connected with the pin assembly. The support insulating ceramic cylinder 204 provided on the support mounting ring 203 is used as a receiving cavity for the cathode assembly and is also a mounting frame for the grid support ring 202. The cathode assembly support ring on the inner s...

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Abstract

The invention discloses an electron gun comprising a hollow support assembly; a cathode assembly is arranged in the support assembly; the top end of the support assembly is fixedly provided with a grid mesh matched with the cathode assembly through a grid mesh press fitting loop; the electron gun also comprises a plug pin assembly connected with the support assembly and the cathode assembly; the electron gun organically combines the hollow support assembly, the cathode assembly, the grid mesh and the plug pin assembly, thus greatly reducing the self space volume; the electron gun is compact in structure, long in service life, can greatly reduce the volume under the same power rate, thus greatly improving the usage conveniences.

Description

technical field [0001] The invention relates to the fields of non-destructive testing such as medical or small industrial CT machines and security inspections, and in particular relates to an electron gun. Background technique [0002] Existing medical and small industrial CT machines, security inspection and other non-destructive testing equipment usually use X-ray tubes as the X-ray radiation source. Through the slip ring mechanism, the X-ray tube, detector, etc. are rotated to realize 360° scanning imaging of the X-ray around the object / person. . The new generation of CT machines and other equipment will directly adopt the array of electron guns arranged in a fan shape. The electron guns are fixed, and the X-ray scanning imaging will be realized by the electron guns working in sequence. This will reduce the mechanical structure of the CT machine and effectively improve the imaging quality. Since the traditional X-ray tube is no longer used, X-rays are provided in the f...

Claims

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Application Information

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IPC IPC(8): H01J37/063H01J37/065
CPCH01J37/063H01J37/065
Inventor 龙继东刘平陈弹蛋彭宇飞秦臻李建北黄刚向军李天涛陈欣杨洁陈德彪刘尔祥
Owner INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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