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X-ray tube with hollow structure

An X-ray tube and hollow technology, applied in the field of X-ray tubes, can solve the problems of aggravating anode target expansion, increasing focal spot drift, blocking heat transfer, etc. The effect of reducing the length dimension

Inactive Publication Date: 2018-07-24
THE FIRST RES INST OF MIN OF PUBLIC SECURITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ordinary adapter 102 is used to cooperate with the anode target assembly 101. There is a gap between the ordinary adapter 102 and the threaded hole of the anode target assembly 101, which blocks the heat transfer and intensifies the expansion of the anode target, thereby increasing the focal spot drift.

Method used

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  • X-ray tube with hollow structure

Examples

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that the following examples are based on the premise of this technical solution, and provide detailed implementation and specific operation process, but the protection scope of the present invention is not limited to the present invention. Example.

[0024] Such as figure 2 As shown, a hollow structure X-ray tube includes a glass bulb 2, an adapter 4, an anode assembly and a cathode assembly 1, and the anode assembly includes an anode cap 5 and an anode target assembly 3, and the anode target assembly 3 is connected to the The anode cap 5 is welded (brazed).

[0025] Such as Figure 4 , Figure 5 As shown, the inside of the anode target assembly 3 is provided with a large-aperture deep-hole structure 32, and the large-aperture deep-hole structure 32 is concentric with the anode target assembly 3; the aperture D2 of the large-aperture deep-hole stru...

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PUM

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Abstract

The invention discloses an X-ray tube with a hollow structure, which comprises a glass shell (2), an adapter (4), an anode assembly and a cathode assembly (1), wherein the anode assembly comprises ananode cap (5) and an anode target assembly (3), the anode target assembly (3) is welded with the anode cap (5), and the internal part of the anode target assembly (3) is of a large-aperture deep holestructure (32); and the adapter (4) extends into deepest part of the internal part of the large-aperture deep hole structure (32) and is fixed with the anode target assembly (3). The X-ray tube disclosed by the invention can effectively reduce the drift of a focal spot.

Description

technical field [0001] The invention relates to the technical field of X-ray tubes, in particular to an X-ray tube with a hollow structure. Background technique [0002] In the X-ray tube, electrons generated by the cathode of the X-ray tube bombard the target surface of the anode at high speed under the action of a high-voltage electric field to generate X-rays. The area hit by the high-speed electron beam is the focal spot, and more than 98% of the energy of the bombarded electrons is converted into heat energy at the anode . Affected by continuous thermal energy, the focal spot on the anode surface will move along the axial direction, resulting in focal spot drift. The change of the focal spot relative to the axial center position is an inherent characteristic of the X-ray tube, which can easily cause drastic changes in the signal amplitude received by the detector, which has a great impact on the image background of the whole machine. [0003] The anode target assembly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J35/08
CPCH01J35/08H01J2235/086
Inventor 王奇志卓琳陈力沙京田任翔
Owner THE FIRST RES INST OF MIN OF PUBLIC SECURITY
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