CN105118761B - A kind of preparation method for the X-ray tube for shielding secondary electron bombardment - Google Patents
A kind of preparation method for the X-ray tube for shielding secondary electron bombardment Download PDFInfo
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- CN105118761B CN105118761B CN201510585352.2A CN201510585352A CN105118761B CN 105118761 B CN105118761 B CN 105118761B CN 201510585352 A CN201510585352 A CN 201510585352A CN 105118761 B CN105118761 B CN 105118761B
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- ray tube
- ceramic structure
- secondary electron
- bombardment
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Abstract
The invention discloses a kind of preparation method for the X-ray tube for shielding secondary electron bombardment, comprise the following steps that：Ceramic structure is carried out to the necking design of step, sealing surface is hidden in the slit between ceramic structure and metal parts, it is to avoid the bombardment of secondary electron；In sealing-in mode, the outer seal configuration of complete protected type is taken, sealing surface is stashed completely；On the end face of ceramic structure, increase an oxygen-free copper shading ring.The present invention is rationally designed by the sealing structure to X-ray tube, simultaneously ceramic structure block and pressure is designed, secondary electron and scattered electron are effectively shielded, bombardment and attachment of the electronics to sealing surface and ceramic structure when reducing work, reduce the leak rate of ray tube, improve dielectric strength, it is ensured that ray tube works reliable and stablely.
Description
Technical field
The present invention relates to high-energy physics technical field, specifically a kind of preparation for the X-ray tube for shielding secondary electron bombardment
Method.
Background technology
When X-ray tube works, anode tungsten target is inevitably same while the bombardment for bearing high-velocity electrons produces X-ray
When can produce secondary electron.The electron bombardment that the emission type of secondary electron can be divided into reflection-type, porjection type and insulator is conductive
Type.Operationally, the metal and insulator of bulb portion will bear the bombardment of scattered electron under action of high voltage to X-ray tube, together
The bombardment for the secondary electron that Shi Huiyou is ejected from anode.If the bombardment of these electronics can draw to the sealing surface of ceramics and metal
The temperature rise as welding ceramics and the solder of metal material carrier is played, gas leakage can be produced when temperature rise is serious.Electronics is in ceramic material
On attachment can reduce the dielectric strength of ceramics, excite flicker in pipe, have a strong impact on the steady operation of ray tube.
The content of the invention
It is an object of the invention to provide a kind of X for shielding secondary electron bombardment for reducing leak rate, improving dielectric strength
The preparation method of ray tube, to solve the problems mentioned in the above background technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of preparation method for the X-ray tube for shielding secondary electron bombardment, is comprised the following steps that：
1) necking that ceramic structure is carried out into step is designed, and sealing surface is hidden between ceramic structure and metal parts
Slit in, it is to avoid the bombardment of secondary electron；
2) in sealing-in mode, the outer seal configuration of complete protected type is taken, sealing surface is stashed completely；
3) on the end face of ceramic structure, an oxygen-free copper shading ring is increased, the oxygen-free copper shading ring is located at ceramic junction
Between structure and metal parts.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention rationally designed by the sealing structure to X-ray tube, while to ceramic structure carry out block with
Pressure design, is effectively shielded to secondary electron and scattered electron, and electronics is banged sealing surface and ceramic structure when reducing work
Hit and adhere to, reduce the leak rate of ray tube, improve dielectric strength, it is ensured that ray tube works reliable and stablely.
Brief description of the drawings
Fig. 1 is the structural representation using improved X-ray tube of the invention.
Fig. 2 is the structural representation at A in Fig. 1.
Fig. 3 is the structural representation at B in Fig. 1.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Fig. 1-3 are referred to, a kind of preparation method for the X-ray tube for shielding secondary electron bombardment is comprised the following steps that：
1) necking that ceramic structure 1 is carried out into step is designed, and sealing surface 2 is hidden in ceramic structure 1 and metal parts 3
Between slit in, it is to avoid the bombardment of secondary electron；
2) in sealing-in mode, the outer seal configuration of complete protected type is taken, sealing surface 2 is stashed completely；
3) on the end face of ceramic structure 1, an oxygen-free copper shading ring 4 is increased, oxygen-free copper shading ring 4 is located at ceramic structure
Between 1 and metal parts 3, scattered electron and secondary electron is on the one hand avoided directly to bombard and be attached to ceramic insulator surface,
On the other hand electric field in balanced pipe, it is to avoid the distortion of electric field.
The present invention is by using the structure design of shielding secondary electron bombardment, and the homogeneous tube leak rate of ray tube is by 12% decline
For 0.5%, electromagnetic field analysis is done by the electronics pipe to new construction, the uniformity of the Electric Field Distribution of new pipe increases,
Local field strength weakens, and this is very beneficial for ray tube and reduced under high voltages to puncture, stable work.
The present invention rationally designed by the sealing structure to X-ray tube, while to ceramic structure 1 carry out block with
Pressure design, is effectively shielded to secondary electron and scattered electron, and electronics is to sealing surface 2 and ceramic structure 1 during reduction work
Bombardment and attachment, reduce the leak rate of ray tube, improve dielectric strength, it is ensured that ray tube works reliable and stablely.
The better embodiment to this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
, can also be on the premise of this patent objective not be departed from formula, the knowledge that one skilled in the relevant art possesses
Various changes can be made.
Claims (1)
1. a kind of preparation method for the X-ray tube for shielding secondary electron bombardment, it is characterised in that comprise the following steps that：
1) necking that ceramic structure (1) is carried out into step is designed, and sealing surface (2) is hidden in ceramic structure (1) and metal zero
In slit between part (3), it is to avoid the bombardment of secondary electron；
2) in sealing-in mode, the outer seal configuration of complete protected type is taken, sealing surface (2) is stashed completely；
3) on the end face of ceramic structure (1), an oxygen-free copper shading ring (4) is increased, the oxygen-free copper shading ring (4) is located at pottery
Between porcelain structure (1) and metal parts (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585352.2A CN105118761B (en) | 2015-09-16 | 2015-09-16 | A kind of preparation method for the X-ray tube for shielding secondary electron bombardment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585352.2A CN105118761B (en) | 2015-09-16 | 2015-09-16 | A kind of preparation method for the X-ray tube for shielding secondary electron bombardment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105118761A CN105118761A (en) | 2015-12-02 |
| CN105118761B true CN105118761B (en) | 2017-08-25 |
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| CN201510585352.2A Active CN105118761B (en) | 2015-09-16 | 2015-09-16 | A kind of preparation method for the X-ray tube for shielding secondary electron bombardment |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021095298A1 (en) * | 2019-11-11 | 2021-05-20 | キヤノン電子管デバイス株式会社 | X-ray tube and method for manufacturing x-ray tube |
| CN111554556B (en) * | 2020-05-18 | 2023-06-27 | 上海联影医疗科技股份有限公司 | X-ray tube and medical imaging apparatus |
| CN116741607B (en) * | 2023-07-20 | 2024-01-30 | 上海超群检测科技股份有限公司 | Anti-sparking cathode assembly and X-ray tube |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3866075A (en) * | 1974-05-09 | 1975-02-11 | Atomic Energy Commission | Vacuum type trigger discharge tube with cup shaped anode |
| JP2008077914A (en) * | 2006-09-20 | 2008-04-03 | Hitachi Medical Corp | X-ray tube |
| CN201378580Y (en) * | 2009-03-26 | 2010-01-06 | 公安部第一研究所 | Gate-controlled carbon nano-cathode field emission X-ray tube |
| CN202996766U (en) * | 2012-09-25 | 2013-06-12 | *** | Environment-friendly high-speed microfocus breast X-ray tube |
| CN103794449B (en) * | 2014-03-06 | 2016-02-03 | 中国科学院电子学研究所 | electron beam axial velocity measuring system |
| CN104889519B (en) * | 2015-04-24 | 2016-04-13 | 黄石上方检测设备有限公司 | A kind of manufacture method of metal-ceramic X-ray tube |
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| CN105118761A (en) | 2015-12-02 |
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Effective date of registration: 20211221 Address after: 610000 floor 1, building 3, No. 99, Huanghe Road, Xindu street, Xindu District, Chengdu, Sichuan Patentee after: Chengdu kaisaier Technology Co.,Ltd. Address before: No. 99, Huanghe Road, East Industrial Zone, Xindu District, Chengdu, Sichuan 610000 Patentee before: CHENGDU KAISAIER ELECTRONICS Co.,Ltd. |
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