CN203588962U - Efficient four-stage depressed collector for suppressing backflow of electrons - Google Patents
Efficient four-stage depressed collector for suppressing backflow of electrons Download PDFInfo
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- CN203588962U CN203588962U CN201320735803.2U CN201320735803U CN203588962U CN 203588962 U CN203588962 U CN 203588962U CN 201320735803 U CN201320735803 U CN 201320735803U CN 203588962 U CN203588962 U CN 203588962U
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Abstract
The utility model discloses an efficient four-stage depressed collector for suppressing backflow of electrons, which comprises a collector cylinder (1), a first collector (2), a second collector (3), a third collector (4) and a fourth collector (5), wherein the first a first collector (2), the second collector (3), the third collector (4) and the fourth collector (5) are installed inside the collector cylinder (1), an inlet of the first collector (2) extends forward into a refocusing section, the inner side of the first collector (2) is provided with a vertical plane structure, and the second collector (3) is provided with a block piece behind an inlet. The four-stage depressed collector disclosed by the utility model is reasonable in structural design and compact in structure, can improve the static collection efficiency and the dynamic collection efficiency of a travelling-wave tube obviously, and improve the total efficiency by 12%. The efficient four-stage depressed collector can effectively suppress backflow of the electrons while improving the total efficiency, and spiral line current of the travelling-wave tube can be greatly reduced, thereby being capable of meeting requirements of the working performance of the travelling-wave tube.
Description
Technical field
The utility model relates to a kind of collector of travelling wave tube, and specific design is a kind of to be had and suppress the high efficiency level Four depressed collector that electronics backflows.
Background technology
Along with electron bunching, electron beam and radio frequency energy mutual effect conversion, electron bunching reaches capacity gradually, the disturbance of electron beam strengthens gradually, the Energy distribution of electronics is all the more uneven, and electron trajectory is all the more chaotic, makes collector be difficult to realize the effective recovery to electron energy.The in the situation that of high electronic efficiency, this phenomenon is particularly evident.The major reason that high efficiency of MDC is difficult to realize is that electronics backflows.When efficiency of MDC improves, certainly will deepen the step-down degree of convergence of collector, and collector step-down degree of convergence is when darker, often electronics backflows larger; When keeping electronics to backflow hour, collector step-down often can only maintain more shallow amplitude, and efficiency of MDC is lower.This has just caused electronics to backflow and the contradiction community of efficiency of MDC.The depressed collector of prior art in use backflows larger, cause travelling tube helical line electric current bigger than normal, and level Four depressed collector underpressure is not dark in the situation that controlling in helix electric current certain limit, the lower gross efficiency that makes of efficiency of MDC is on the low side, its static collection efficiency is 62.5%, dynamic collection efficiency is 55.1%, and the debugging that is difficult to logical superpotential distribution and magnetic focusing system improves the collection effect of level Four depressed collector, makes gross efficiency only reach 48.5%.
Therefore, necessary on the basis of prior art, a kind of reasonable in design of design research and development, can effectively suppress electronics and backflow, the level Four depressed collector that gross efficiency is high.
Summary of the invention
Goal of the invention: the purpose of this utility model is in order to overcome the deficiencies in the prior art, provides one effectively to suppress electronics and backflows, and gross efficiency is high, the high efficiency level Four depressed collector that can make the helix electric current of travelling wave tube obtain significantly reducing.
Technical scheme: in order to realize above object, the technical scheme that the utility model is taked is:
A kind ofly suppress the high efficiency level Four depressed collector that electronics backflows, it comprises collector cylinder, be arranged on respectively the first collector, the second collector, the 3rd collector and the 4th collector of collector cylinder inside, the first described collector entrance extends into and focuses in section again, the first described collector inner side is provided with vertical plane structure, and the second described collector is provided with catch after entrance.
The first described collector entrance puts in and focuses in section again, entry position is dropped on and is focused on the last half magnetic cycle phase peak value position to the rear of section again, the electron beam now focusing on again is not dispersed again, more be beneficial to electron beam and enter collector, reduce again the direct intercepting and capturing of the section of focusing or the first collector, thereby be beneficial to the raising of efficiency of MDC;
As preferred version, the high efficiency level Four depressed collector that above-described inhibition electronics backflows, the bevel angle of described the first collector, the second collector, the 3rd collector and the 4th collector and vertical direction is respectively 70 degree, 47 degree, 23 degree and 16 degree.The utility model, by the simulation of electron trajectory, is optimized and is obtained best collector bevel angle, can effectively reduce the generation of secondary electron.
As preferred version, the high efficiency level Four depressed collector that above-described inhibition electronics backflows, the inlet diameter of described the first collector, the second collector, the 3rd collector and the 4th collector is respectively 0.32 cm, 0.7 cm, 1.1 cm and 1.3 cm.The utility model is optimized the diameter of collector entrance, the electronic energy that makes to enter collector is many dropping on the electrode that voltage after leaning on is lower as far as possible, make the electric current of level Four depressed collector divide the electrode incline that orientation voltage is lower, thereby play the effect that improves efficiency of MDC.
As preferred version, the high efficiency level Four depressed collector that above-described inhibition electronics backflows, the bottom of the 4th described collector is provided with the sawtooth pointed cone structure that suppresses secondary, secondary electron major part is directly tackled by sawtooth pointed cone structure, thereby can effectively suppress secondary.
As preferred version, the high efficiency level Four depressed collector that above-described inhibition electronics backflows, the inner surface of described the first collector, the second collector, the 3rd collector and the 4th collector forms and has dimple structure through blasting treatment, the inner surface of similar collector forms micro-pointed cone structure, can effectively suppress secondary.
The high efficiency level Four depressed collector that inhibition electronics described in the utility model backflows, adopts unsymmetric structure to realize electronics and draw inclined to one side effect, can effectively suppress the electronics wraparound that deeply causes because of Amplitude of Hypotensive, reaches and suppresses the effect that electronics backflows.
Beneficial effect: the high efficiency level Four depressed collector that the inhibition electronics that the utility model provides backflows, compared with prior art collector, has the following advantages:
The high efficiency level Four depressed collector that inhibition electronics described in the utility model backflows, reasonable in design, adopts level Four buck configuration, can obviously improve static collection efficiency and the dynamic collection efficiency of travelling wave tube, and gross efficiency can improve 12%; When gross efficiency improves, can effectively suppress backflowing of electronics, and the helix electric current of travelling wave tube significantly reduced, can meet the requirement of high-power coupled-cavity TWT service behaviour.
Accompanying drawing explanation
Fig. 1 is the structural representation in the inhibition electronics described in the utility model high efficiency level Four depressed collector vertical section of backflowing.
Embodiment
Below in conjunction with specific embodiment, 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.
Implementation column 1
As shown in Figure 1, a kind ofly suppress the high efficiency level Four depressed collector that electronics backflows, it comprises collector cylinder (1), be arranged on respectively collector cylinder (1) inner the first collector (2), the second collector (3), the 3rd collector (4) and the 4th collector (5), before described the first collector (2) entrance, extend into and focus on again in section, described the first collector (2) inner side is provided with vertical plane structure (6), and described the second collector (3) is provided with catch (7) after entrance.
The high efficiency level Four depressed collector that above-described inhibition electronics backflows, the bevel angle of described the first collector (2), the second collector (3), the 3rd collector (4) and the 4th collector (5) and vertical direction is respectively 70 degree, 47 degree, 23 degree and 16 degree.
The high efficiency level Four depressed collector that above-described inhibition electronics backflows, the electrode inlet diameter of described the first collector (2), the second collector (3), the 3rd collector (4) and the 4th collector (5) is respectively 0.32 cm, 0.7 cm, 1.1 cm and 1.3 cm.
The high efficiency level Four depressed collector that above-described inhibition electronics backflows, the bottom of the 4th described collector (5) is provided with the sawtooth pointed cone structure (8) that suppresses secondary.
The high efficiency level Four depressed collector that above-described inhibition electronics backflows, described the first collector (2), the second collector (3), the 3rd collector (4) and the 4th collector (5) inner surface forms and has dimple structure through blasting treatment.
The tubulature experiment of embodiment 2 collector assembling travelling wave tube
The level Four depressed collector that the utility model is provided and the collector of prior art are assembled to travelling wave tube, then carry out performance test, and testing result is as following table:
Travelling wave tube performance test results before and after table 1 improves
By above test data, show, the travelling wave tube of the high efficiency level Four depressed collector that the inhibition electronics that assembling the utility model provides backflows, static collection efficiency and the dynamic collection efficiency of travelling wave tube are all significantly improved, and gross efficiency is significantly improved 12%; Show that when this level Four depressed collector can significantly improve travelling wave tube gross efficiency, can effectively suppress electronics backflows.
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 (5)
1. one kind is suppressed the high efficiency level Four depressed collector that electronics backflows, it is characterized in that: it comprises collector cylinder (1), be arranged on respectively collector cylinder (1) inner the first collector (2), the second collector (3), the 3rd collector (4) and the 4th collector (5), before described the first collector (2) entrance, extend into and focus on again in section, described the first collector (2) inner side is provided with vertical plane structure (6), and described the second collector (3) is provided with catch (7) after entrance.
2. the high efficiency level Four depressed collector that inhibition electronics according to claim 1 backflows, it is characterized in that: the bevel angle of described the first collector (2), the second collector (3), the 3rd collector (4) and the 4th collector (5) and vertical direction is respectively 70 degree, 47 degree, 23 degree and 16 degree.
3. the high efficiency level Four depressed collector that inhibition electronics according to claim 1 backflows, it is characterized in that: the electrode inlet diameter of described the first collector (2), the second collector (3), the 3rd collector (4) and the 4th collector (5) is respectively 0.32 cm, 0.7 cm, 1.1 cm and 1.3 cm.
4. the high efficiency level Four depressed collector backflowing according to the inhibition electronics described in claims 1 to 3 any one, is characterized in that: the bottom of the 4th described collector (5) is provided with the sawtooth pointed cone structure (8) that suppresses secondary.
5. the high efficiency level Four depressed collector that inhibition electronics according to claim 4 backflows, is characterized in that: described the first collector (2), the second collector (3), the 3rd collector (4) and the 4th collector (5) inner surface forms and have dimple structure through blasting treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735803.2U CN203588962U (en) | 2013-11-20 | 2013-11-20 | Efficient four-stage depressed collector for suppressing backflow of electrons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735803.2U CN203588962U (en) | 2013-11-20 | 2013-11-20 | Efficient four-stage depressed collector for suppressing backflow of electrons |
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| Publication Number | Publication Date |
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| CN203588962U true CN203588962U (en) | 2014-05-07 |
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| CN201320735803.2U Expired - Fee Related CN203588962U (en) | 2013-11-20 | 2013-11-20 | Efficient four-stage depressed collector for suppressing backflow of electrons |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157536A (en) * | 2014-08-21 | 2014-11-19 | 中国科学院电子学研究所 | Non-axisymmetrical double-inclined-plane multistage depressed collector electrode |
| CN109671603A (en) * | 2018-12-29 | 2019-04-23 | 中国电子科技集团公司第十二研究所 | A kind of multistage depressed collector for traveling-wave tube |
| CN109860003A (en) * | 2018-12-29 | 2019-06-07 | 中国电子科技集团公司第十二研究所 | A kind of multistage depressed collector for traveling-wave tube |
| CN110620028A (en) * | 2019-09-27 | 2019-12-27 | 南京三乐集团有限公司 | Miniaturized and light Ka-band space traveling wave tube |
| CN111105966A (en) * | 2019-12-09 | 2020-05-05 | 南京三乐集团有限公司 | High-efficiency high-power pulse space traveling wave tube four-stage depressed collector structure |
-
2013
- 2013-11-20 CN CN201320735803.2U patent/CN203588962U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104157536A (en) * | 2014-08-21 | 2014-11-19 | 中国科学院电子学研究所 | Non-axisymmetrical double-inclined-plane multistage depressed collector electrode |
| CN109671603A (en) * | 2018-12-29 | 2019-04-23 | 中国电子科技集团公司第十二研究所 | A kind of multistage depressed collector for traveling-wave tube |
| CN109860003A (en) * | 2018-12-29 | 2019-06-07 | 中国电子科技集团公司第十二研究所 | A kind of multistage depressed collector for traveling-wave tube |
| CN109860003B (en) * | 2018-12-29 | 2021-02-02 | 中国电子科技集团公司第十二研究所 | Multistage depressed collector of travelling wave tube |
| CN109671603B (en) * | 2018-12-29 | 2021-04-02 | 中国电子科技集团公司第十二研究所 | Multistage depressed collector of travelling wave tube |
| CN110620028A (en) * | 2019-09-27 | 2019-12-27 | 南京三乐集团有限公司 | Miniaturized and light Ka-band space traveling wave tube |
| CN110620028B (en) * | 2019-09-27 | 2021-11-16 | 南京三乐集团有限公司 | Miniaturized and light Ka-band space traveling wave tube |
| CN111105966A (en) * | 2019-12-09 | 2020-05-05 | 南京三乐集团有限公司 | High-efficiency high-power pulse space traveling wave tube four-stage depressed collector structure |
| CN111105966B (en) * | 2019-12-09 | 2022-07-01 | 南京三乐集团有限公司 | High-efficiency high-power pulse space traveling wave tube four-stage depressed collector structure |
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| 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: 20140507 Termination date: 20211120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |