CN103681181B - For the cathode electron gun of microfocus x ray tube - Google Patents
For the cathode electron gun of microfocus x ray tube Download PDFInfo
- Publication number
- CN103681181B CN103681181B CN201310603688.8A CN201310603688A CN103681181B CN 103681181 B CN103681181 B CN 103681181B CN 201310603688 A CN201310603688 A CN 201310603688A CN 103681181 B CN103681181 B CN 103681181B
- Authority
- CN
- China
- Prior art keywords
- electrode
- microfocus
- electron gun
- filament
- cathode electron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- X-Ray Techniques (AREA)
Abstract
The invention discloses a kind of cathode electron gun for microfocus X-ray pipe, comprise glass stem, ceramic electrode, filament cap, cathode shield, electrode holder, filament; Two in eight electrodes of described glass stem are connected with described ceramic electrode one end, and six are connected with described filament cap; Described ceramic electrode is fixed on described electrode holder, and the described ceramic electrode other end is connected with described filament, and described electrode holder is fixed in described filament cap, and described filament cap is located in described cathode shield.Under the high voltage electric field effect of 100KV, thermionic current can reach 30 μm in the convergence focus at 15mm stroke place, make focus 30 μm of tube voltages be that the x-ray tube of 100KV becomes possibility.
Description
Technical field
The present invention relates to electron gun technical field, especially a kind of cathode electron gun for microfocus x ray tube.
Background technology
At present, the X-ray tube of domestic production is large focal spot X-ray tube, and its minimum focus can accomplish 0.3mm × 0.3mm; Be commonly used to health care and the flaw detection of high-power technique, the fields such as safety check.Along with the development of sciemtifec and technical sphere, there is surface mount (i.e. SMT) technology.Use SMT technology can make electronic product reduced volume 40 ~ 60%, weight reduction 60 ~ 80%.But the thing followed is traditional detection means, and common focus X-ray ray machine etc. can not meet the existing quality of production product and the requirement of reliability, especially cannot find out the defect of components and parts inside.So just there is new detection means, microfocus X-ray machine, the core devices of this equipment is microfocus X-ray pipe, the size of this light pipe focus depends on again cathode electron gun (i.e. the cathode assembly of light pipe), want the X-ray tube making little focus, electron stream that just must be superfine, the at present domestic X-ray tube also not having focus < 300 μm.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of cathode electron gun for microfocus X-ray pipe, is the X-ray tube of focus < 300 μm.
In order to realize foregoing invention object, the invention provides following technical scheme: a kind of cathode electron gun for microfocus X-ray pipe, comprising glass stem, ceramic electrode, filament cap, cathode shield, electrode holder, filament; Two in eight electrodes of described glass stem are connected with described ceramic electrode one end, and six are connected with described filament cap; Described ceramic electrode is fixed on described electrode holder, and the described ceramic electrode other end is connected with described filament, and described electrode holder is fixed in described filament cap, and described filament cap is located in described cathode shield.
Further, described two electrodes are connected with described ceramic electrode through copper-nickel alloy sheet wire.
Further, described two electrodes are molybdenum electrode.
Further, described six electrodes be connected with described filament cap are the electrode that molybdenum maybe can cut down making.
Further, described ceramic electrode and described electrode holder are adopted and are screwed.
Further, described filament cap, described cathode shield or described electrode holder adopt 304 stainless steel materials to make.
Further, described ceramic electrode adopts 95% aluminium oxide ceramics and carries out ceramic metallization process.
Further, described filament adopts pure tungsten to make.
Further, described six electrodes adopt 304 stainless steels to be connected location with described filament cap.
Compared with prior art, the present invention has the following advantages: under the high voltage electric field effect of 100KV, thermionic current can reach 30 μm in the convergence focus at 15mm stroke place, make focus 30 μm of tube voltages be that the x-ray tube of 100KV becomes possibility.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure:
1, glass stem; 2, ceramic electrode; 3, filament cap; 4, cathode shield; 5, copper-nickel alloy sheet wire; 6, ceramic electrical electrode seat; 7, filament.
Embodiment
Describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.
A kind of cathode electron gun for microfocus X-ray pipe as shown in Figure 1, comprises glass stem 1, ceramic electrode 2, filament cap 3, cathode shield 4, copper-nickel alloy sheet wire 5, electrode holder 6, filament 7; Two in eight electrodes of described glass stem 1 are connected with described ceramic electrode 2 one end through described copper-nickel alloy sheet wire 5, and six are connected with described filament cap 3; Described ceramic electrode 2 is fixed on described electrode holder 6, and described ceramic electrode 2 other end is connected with described filament 7, and described electrode holder 6 is fixed in described filament cap 3, and described filament cap 3 is located in described cathode shield 4.
Wherein, described two electrodes be connected with described ceramic electrode 2 are molybdenum electrode.Other six electrodes be connected with described filament cap 3 are the electrode that molybdenum maybe can cut down making, adopt 304 stainless steels to be connected location with described filament cap 3.
Described ceramic electrode 2 and described electrode holder 6 are adopted and are screwed.Described filament cap 3, described cathode shield 4 or described electrode holder 6 adopt 304 stainless steel materials to make.Described ceramic electrode 2 adopts 95% aluminium oxide ceramics and carries out ceramic metallization process.Described filament 7 adopts pure tungsten to make.
The present invention, by new thought, adopts high-tech design, enables domestic production manufacture the x-ray tube of tube voltage 100KV focus 30 μm.
Claims (9)
1. for a cathode electron gun for microfocus X-ray pipe, it is characterized in that: comprise glass stem, ceramic electrode, filament cap, cathode shield, electrode holder, filament; Two in eight electrodes of described glass stem are connected with described ceramic electrode one end, and six are connected with described filament cap; Described ceramic electrode is fixed on described electrode holder, and the described ceramic electrode other end is connected with described filament, and described electrode holder is fixed in described filament cap, and described filament cap is located in described cathode shield.
2. as claimed in claim 1 for the cathode electron gun of microfocus X-ray pipe, it is characterized in that: described two electrodes are connected with described ceramic electrode through copper-nickel alloy sheet wire.
3. as claimed in claim 2 for the cathode electron gun of microfocus X-ray pipe, it is characterized in that: described two electrodes are molybdenum electrode.
4. as claimed in claim 1 for the cathode electron gun of microfocus X-ray pipe, it is characterized in that: described six electrodes be connected with described filament cap are the electrode that molybdenum maybe can cut down making.
5. as claimed in claim 1 for the cathode electron gun of microfocus X-ray pipe, it is characterized in that: described ceramic electrode and described electrode holder are adopted and be screwed.
6. as claimed in claim 1 for the cathode electron gun of microfocus X-ray pipe, it is characterized in that: described filament cap, described cathode shield or described electrode holder adopt 304 stainless steel materials to make.
7. as claimed in claim 1 for the cathode electron gun of microfocus X-ray pipe, it is characterized in that: described ceramic electrode adopts 95% aluminium oxide ceramics and carries out ceramic metallization process.
8. as claimed in claim 1 for the cathode electron gun of microfocus X-ray pipe, it is characterized in that: described filament adopts pure tungsten to make.
9. according to claim 1 for the cathode electron gun of microfocus X-ray pipe, it is characterized in that: described six electrodes adopt 304 stainless steels to be connected location with described filament cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310603688.8A CN103681181B (en) | 2013-11-26 | 2013-11-26 | For the cathode electron gun of microfocus x ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310603688.8A CN103681181B (en) | 2013-11-26 | 2013-11-26 | For the cathode electron gun of microfocus x ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103681181A CN103681181A (en) | 2014-03-26 |
| CN103681181B true CN103681181B (en) | 2016-04-06 |
Family
ID=50318407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310603688.8A Active CN103681181B (en) | 2013-11-26 | 2013-11-26 | For the cathode electron gun of microfocus x ray tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103681181B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934284B (en) * | 2015-06-17 | 2018-01-16 | 无锡日联科技股份有限公司 | Multistage beam forming cathode electron gun for atomic focal spot x-ray tubes |
| CN105321786B (en) * | 2015-10-19 | 2017-07-14 | 中国原子能科学研究院 | A kind of device and method for obtaining X-ray spot light |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3935498A (en) * | 1968-05-24 | 1976-01-27 | General Electric Company | Electron gun assembly |
| US4075415A (en) * | 1977-01-06 | 1978-02-21 | Raytheon Company | Tube with terminal end cap |
| US6381305B1 (en) * | 1998-02-06 | 2002-04-30 | Hamamatsu Photonics K.K. | X-ray tube having a hood electrode |
| US6487272B1 (en) * | 1999-02-19 | 2002-11-26 | Kabushiki Kaisha Toshiba | Penetrating type X-ray tube and manufacturing method thereof |
| CN1572011A (en) * | 2001-10-19 | 2005-01-26 | 浜松光子学株式会社 | X-ray tube and method of producing the same |
| CN201780959U (en) * | 2010-08-05 | 2011-03-30 | 中航华东光电有限公司 | Electron gun for airborne head-up display tube |
| CN203553096U (en) * | 2013-11-26 | 2014-04-16 | 无锡日联科技有限公司 | Cathode electron gun used for micro-focus X-ray tube |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5077777A (en) * | 1990-07-02 | 1991-12-31 | Micro Focus Imaging Corp. | Microfocus X-ray tube |
| KR100739059B1 (en) * | 2000-07-27 | 2007-07-12 | 삼성에스디아이 주식회사 | Stem for cathode ray tube |
| JP2006164819A (en) * | 2004-12-09 | 2006-06-22 | Hitachi Medical Corp | Microfocus x-ray tube and x-ray device using it |
| CN202888120U (en) * | 2012-10-31 | 2013-04-17 | 丹东奥龙射线仪器有限公司 | Plug and play type lamp filament device of open type microfocus X ray tube |
| CN103219212B (en) * | 2013-05-08 | 2015-06-10 | 重庆启越涌阳微电子科技发展有限公司 | Graphene serving as cathode of X-ray tube and X-ray tube thereof |
-
2013
- 2013-11-26 CN CN201310603688.8A patent/CN103681181B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3935498A (en) * | 1968-05-24 | 1976-01-27 | General Electric Company | Electron gun assembly |
| US4075415A (en) * | 1977-01-06 | 1978-02-21 | Raytheon Company | Tube with terminal end cap |
| US6381305B1 (en) * | 1998-02-06 | 2002-04-30 | Hamamatsu Photonics K.K. | X-ray tube having a hood electrode |
| US6487272B1 (en) * | 1999-02-19 | 2002-11-26 | Kabushiki Kaisha Toshiba | Penetrating type X-ray tube and manufacturing method thereof |
| CN1572011A (en) * | 2001-10-19 | 2005-01-26 | 浜松光子学株式会社 | X-ray tube and method of producing the same |
| CN201780959U (en) * | 2010-08-05 | 2011-03-30 | 中航华东光电有限公司 | Electron gun for airborne head-up display tube |
| CN203553096U (en) * | 2013-11-26 | 2014-04-16 | 无锡日联科技有限公司 | Cathode electron gun used for micro-focus X-ray tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103681181A (en) | 2014-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103219212B (en) | Graphene serving as cathode of X-ray tube and X-ray tube thereof | |
| CN108109893A (en) | One kind can cut down stem grid-controlled X-ray tube | |
| CN103681181B (en) | For the cathode electron gun of microfocus x ray tube | |
| CN203553096U (en) | Cathode electron gun used for micro-focus X-ray tube | |
| CN203218217U (en) | Micro-focus X ray tube with lateral beryllium window | |
| CN206685345U (en) | A kind of titanium window construction X-ray tube | |
| CN208367114U (en) | A kind of direct-heated cathode comprehensive performance test device | |
| CN104934284B (en) | Multistage beam forming cathode electron gun for atomic focal spot x-ray tubes | |
| CN102570094A (en) | High-voltage lead assembly for ultrahigh vacuum device and manufacture method thereof | |
| CN109767970B (en) | Miniature packaged ionization gauge | |
| CN204885080U (en) | A multistage focus negative pole electronics rifle for atomic focus X -ray tube | |
| CN210136837U (en) | Large-angle beryllium window output X-ray tube anode structure and X-ray tube | |
| CN104916513A (en) | Micro-focus X-ray tube | |
| CN209087760U (en) | A kind of CT tube filament with lead | |
| CN110289119B (en) | Proliferation type high-voltage nuclear battery | |
| CN203205372U (en) | Electron gun for industrial electron irradiation accelerator | |
| CN209526062U (en) | Vacuum electrode | |
| CN207731892U (en) | One kind can cut down stem grid-controlled X-ray tube | |
| CN204339087U (en) | A kind of brazing tooling of L-band space travelling wave tube cathode insulator | |
| CN204303663U (en) | Contact riveted joint vacuum interrupter | |
| CN103268849A (en) | Electronic gun for industrial electron irradiation accelerator | |
| CN204834560U (en) | Little focus X -ray tube | |
| CN202256689U (en) | Novel double-anode counting tube | |
| CN208570519U (en) | A kind of X-ray tube cathode of integration ripple ceramic structure | |
| CN101992360A (en) | Capillary and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 214000, Jiangsu Province, Wuxi New District Hung Tin Road, Tin Road, No. 208-7 Applicant after: WUXI UNICOMP TECHNOLOGY CO., LTD. Address before: 214000, Jiangsu Province, Wuxi New District Hung Tin Road, Tin Road, No. 208-7 Applicant before: Wuxi Unicomp Technology Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |