CN203553092U - Electron gun of millimeter wave broadband travelling wave tube - Google Patents
Electron gun of millimeter wave broadband travelling wave tube Download PDFInfo
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- CN203553092U CN203553092U CN201320622091.3U CN201320622091U CN203553092U CN 203553092 U CN203553092 U CN 203553092U CN 201320622091 U CN201320622091 U CN 201320622091U CN 203553092 U CN203553092 U CN 203553092U
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- electron gun
- millimeter wave
- travelling wave
- wave tube
- sealing
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Abstract
The utility model discloses an electron gun of a millimeter wave broadband travelling wave tube. The electron gun comprises an electron gun main body structure composed of an electron gun shell assembly (1), an electron gun core assembly (2) and a focusing electrode assembly (3), the electron gun main body structure is fixed in an electron gun metal shell (5) via a compaction device (4), sealing devices (6) are sealed on the electron gun metal shell (5) via argon arc welding, the electron gun core assembly (2) and the focusing electrode assembly (3) are arranged on the electron gun shell assembly (1), and the sealing devices (6) comprise sealing rings (6-1) and electrode lead porcelain columns (6-2). According to the electron gun of the millimeter wave broadband travelling wave tube, the structure and the design are reasonable, the metal sealing structure is employed, the intensity is high, the electron gun is high temperature resistant and can well satisfy the assembling requirement of the high standard millimeter wave broadband travelling wave tube, gas leakage is prevented, the reliability and the stability are high, and the application range is wide.
Description
Technical field
The utility model relates to a kind of travelling wave tube, is specifically related to a kind of electron gun of millimeter wave broadband travelling wave tube.
Background technology
Electron gun is as the important component part of travelling wave tube, and as the source of travelling wave tube input energy, its long-life, highly reliable feature is most important.Prior art is made to such an extent that the electron gun sealed structure that adopts of travelling wave tube mostly is laminated structure, the mode that this class formation adopts porcelain ring and electrode to draw ring stack more is separated insulation by each electrode of electron gun, it is withstand voltage that outside embedding silicon rubber improves its outside, and porcelain piece is avoided too much pollution simultaneously.But this class formation taps into the sealing of row electron gun part by ceramic metallization and metal sealing boxing, metallization quality, quality of coating, welding procedure are had higher requirements.In addition at the travelling wave tube of low-frequency range work, its frequency is low, linear dimension is large, the volume of rifle shell porcelain piece, thickness also can be done greatly, ceramic mass or reliable, but along with the rising of operating frequency, especially arrived the travelling wave tube of millimere-wave band, it is very fast that the linear dimension of electron-optical system reduces, so crunch seal part is also more and more less, and this has just brought the series of problems such as the quality of little porcelain piece own, ceramic metallization, welding gas leakage.The electron gun overall work of this kind of structure is in atmospheric environment in addition, although outside embedding silicon rubber, but cannot definitely guarantee that it is safe and reliable, and silicon rubber firm attachment is on electron gun, reprocess trouble, and the ceramic mass with silicon rubber after reprocessing can be affected, cause using.
Due to above deficiency, the electron gun of prior art can't meet the matching requirements of high standard millimeter wave broadband travelling wave tube, therefore necessary on the basis of prior art a kind of reasonable in design of research and design, sturdy and durable, sealing structure is firm, intensity is high, can bear high temperature and gastight novel electronic gun.
Summary of the invention
Goal of the invention: the purpose of this utility model is in order to solve the deficiencies in the prior art, provide a kind of structural design more reasonable, adopt metal sealing structure, intensity is high, can bear high temperature and air tight, reliability, stability are higher, can be good at meeting the electron gun of high standard millimeter wave broadband travelling wave tube matching requirements.
Technical scheme: in order to realize above object, technical solution adopted in the utility model is:
A kind of electron gun of millimeter wave broadband travelling wave tube, it comprises: the electron gun body structure being comprised of electron gun shell component, electron gun core assembly and focusing electrode assembly, electron gun body structure is fixed in electron gun metal shell by hold down gag, sealing-in device by argon arc welding sealing-in on electron gun metal shell, described electron gun core assembly and focusing electrode assembly are arranged on electron gun shell component, and described sealing-in device comprises sealing ring and contact conductor porcelain knob.
The electron gun of above-described millimeter wave broadband travelling wave tube, described electron gun core assembly comprises cathode emitter, is arranged on the cathode sleeve of cathode emitter periphery, for supporting the cathode support cylinder of negative electrode, for heated filament and the heated filament sleeve that is arranged on heated filament periphery of heated cathode emitter.
The electron gun of above-described millimeter wave broadband travelling wave tube, described focusing electrode assembly comprises the support tube of focusing electrode and focusing electrode.
The electron gun of the millimeter wave broadband travelling wave tube that the utility model provides, electron gun packs in metal shell, adopt metal sealing mode, utilize lead-in wire porcelain knob that the contact conductor in electron gun district is drawn, this sealing structure intensity is high, durable, and electron gun adopts metal shell, metal shell utilizes the processing of integral type manufacturing process, and concentric, inner surface fineness, dimensional accuracy are all had higher requirements.In assembling mode, electron gun utilizes front end step and metal shell to closely cooperate, and guarantees the concentric of electron gun and passage, after with the periphery of cylinder compression rifle shell, utilize treated spring that electron gun is suppressed in the middle of metal shell.
The electron gun of the millimeter wave broadband travelling wave tube that the utility model provides, the sealing-in device that sealing ring and contact conductor porcelain knob form on electron gun metal shell, can guarantee the air-tightness in electron gun district by argon arc welding sealing-in.
Beneficial effect: the electron gun of the millimeter wave broadband travelling wave tube that the utility model provides compared with prior art has the following advantages:
1, metal shell structure can well be protected the porcelain piece in electron gun shell, and section prevents extraneous factor damage pottery, improves the reliability of electron gun;
2, electron gun work is in vacuum environment, and ceramic withstand voltage properties improves greatly, can solve electrode sparking problem between porcelain;
3, the metal shell of pure iron well plays magnetic screening action, can prevent that external magnetic field from producing and disturbing electron gun, guarantees the stable of electron gun work, improves reliability;
4, the sealing structure that adopts metal shell argon arc welding, intensity is high, can bear high temperature and air tight, except conventional environmental test, also can meet special requirement;
5, electron gun adopts elastic press type assembling mode, and reliability is high, reprocesses conveniently, can be owing to using silicon rubber to cause porcelain piece to pollute;
6, the experimental result of tubulature shows, has excellent withstand voltage properties, and stability, and long service life can be good at meeting the matching requirements of high standard travelling wave tube, have wide range of applications, and can overcome many deficiencies of prior art.
Accompanying drawing explanation
The structural representation of the electron gun of the millimeter wave broadband travelling wave tube that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment and only for the utility model is described, be not used in restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present utility model.
As shown in Figure 1, a kind of electron gun of millimeter wave broadband travelling wave tube, it comprises: by electron gun shell component (1), the electron gun body structure that electron gun core assembly (2) and focusing electrode assembly (3) form, electron gun body structure is fixed in electron gun metal shell (5) by hold down gag (4), sealing-in device (6) by argon arc welding sealing-in on electron gun metal shell (5), described electron gun core assembly (2) and focusing electrode assembly (3) are arranged on electron gun shell component (1), described sealing-in device (6) comprises sealing ring (6-1) and contact conductor porcelain knob (6-2).
The electron gun of above-described millimeter wave broadband travelling wave tube, described electron gun core assembly (2) comprises cathode emitter, is arranged on the cathode sleeve of cathode emitter periphery, for supporting the cathode support cylinder of negative electrode, for heated filament and the heated filament sleeve that is arranged on heated filament periphery of heated cathode emitter.
The electron gun of above-described millimeter wave broadband travelling wave tube, described focusing electrode assembly (3) comprises the support tube of focusing electrode and focusing electrode.
The above is only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (3)
1. the electron gun of a millimeter wave broadband travelling wave tube, it is characterized in that, it comprises: by electron gun shell component (1), the electron gun body structure that electron gun core assembly (2) and focusing electrode assembly (3) form, electron gun body structure is fixed in electron gun metal shell (5) by hold down gag (4), sealing-in device (6) by argon arc welding sealing-in on electron gun metal shell (5), described electron gun core assembly (2) and focusing electrode assembly (3) are arranged on electron gun shell component (1), described sealing-in device (6) comprises sealing ring (6-1) and contact conductor porcelain knob (6-2).
2. the electron gun of millimeter wave broadband travelling wave tube according to claim 1, it is characterized in that, described electron gun core assembly (2) comprises cathode emitter, is arranged on the cathode sleeve of cathode emitter periphery, for supporting the cathode support cylinder of negative electrode, for heated filament and the heated filament sleeve that is arranged on heated filament periphery of heated cathode emitter.
3. the electron gun of millimeter wave broadband travelling wave tube according to claim 1, is characterized in that, described focusing electrode assembly (3) comprises the support tube of focusing electrode and focusing electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622091.3U CN203553092U (en) | 2013-10-10 | 2013-10-10 | Electron gun of millimeter wave broadband travelling wave tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320622091.3U CN203553092U (en) | 2013-10-10 | 2013-10-10 | Electron gun of millimeter wave broadband travelling wave tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203553092U true CN203553092U (en) | 2014-04-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320622091.3U Expired - Fee Related CN203553092U (en) | 2013-10-10 | 2013-10-10 | Electron gun of millimeter wave broadband travelling wave tube |
Country Status (1)
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| CN (1) | CN203553092U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996588A (en) * | 2014-06-09 | 2014-08-20 | 成都国光电气股份有限公司 | Electronic gun of traveling-wave tube |
-
2013
- 2013-10-10 CN CN201320622091.3U patent/CN203553092U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996588A (en) * | 2014-06-09 | 2014-08-20 | 成都国光电气股份有限公司 | Electronic gun of traveling-wave tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20211010 |
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| CF01 | Termination of patent right due to non-payment of annual fee |