CN109860003A - A kind of multistage depressed collector for traveling-wave tube - Google Patents
A kind of multistage depressed collector for traveling-wave tube Download PDFInfo
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- CN109860003A CN109860003A CN201811639416.2A CN201811639416A CN109860003A CN 109860003 A CN109860003 A CN 109860003A CN 201811639416 A CN201811639416 A CN 201811639416A CN 109860003 A CN109860003 A CN 109860003A
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- collector
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- protrusion
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Abstract
The invention discloses a kind of multistage depressed collector for traveling-wave tube to accommodate the interior collector being fixed in insulation porcelain tube inner chamber, and the outer collector being installed on insulation porcelain drum outer wall including the insulation porcelain cylinder with inner cavity；Interior collector includes prime collector and final stage collector；Final stage collector includes body part, and body part includes bottom wall part and sidewall portion；It is formed in bottom wall part towards electronics note injection direction, and the first cone cell protrusion with the coaxial arrangement of prime collector；The final stage collector further includes having the bulge-structure being formed on body part；Bulge-structure includes the second cone cell protrusion being formed in sidewall portion interior sidewall surface.The present invention solves existing multistage depressed collector for traveling-wave tube electronics note and directly bombards final stage collector for a long time, causes final stage collector local energy excessive, so that the service life of travelling-wave tubes and reliability decrease, and due to reflux rate height, the low problem of collection efficiency.
Description
Technical field
The present invention relates to vacuum microwave field of electronic devices.More particularly, to a kind of multistage depressed collector for traveling-wave tube.
Background technique
With the development of space electronic technology, satellite-borne synthetic aperture radar (SAR) satellite for remote sensing becomes research heat
Point, satellite-borne SAR satellite can overcome cloud and mist sleet and the limitation of night dark condition to be imaged on a surface target, can round-the-clock, round-the-clock, high
Resolution ratio, large format earth observation can all play a significant role in military field and civil field.Highpowerpulse space traveling wave
Key electronic device of the pipe as satellite-borne SAR radar, to made higher requirement in the performances such as power, efficiency, reliability.
It is not high to the efficiency requirements of airborne and ground highpowerpulse travelling-wave tubes in the development of existing travelling-wave tubes, one
As be all made of 1~3 grade of depressed collector, space travelling wave tube requires efficiency higher, is typically designed as 4 grades of depressed collectors, collects
Extremely interior electrode shape carries out simulation optimization design all in accordance with electronics note state.For highpowerpulse space travelling wave tube, transmitting
Electric current is big, if directly bombardment will make service life and the reliability decrease of travelling-wave tubes on final stage electrode to electronics note for a long time.Usually
Final stage collector includes to visit cone-shaped structure before one, to disperse to electronics note, reduces reflux rate, but this kind of structure
Final stage collector appoint and so can not effectively solve high current electronics and directly bombard the caused final stage collector office on final stage electrode
The problem of portion's energy excessive service life for leading to travelling-wave tubes and reliability decrease.
Accordingly, it is desirable to provide a kind of new multi-level depressurization collector to be applicable in highpowerpulse travelling-wave tubes.
Summary of the invention
In view of the above problems, the technical problem to be solved in the present invention is to provide a kind of multistage depressed collector for traveling-wave tube, with
It solves existing multistage depressed collector for traveling-wave tube electronics note and directly bombards final stage collector for a long time, cause final stage collector local
Energy is excessive, so that the service life of travelling-wave tubes and reliability decrease, and due to reflux rate height, the low problem of collection efficiency.
In order to solve the above technical problems, the present invention adopts the following technical solutions:
A kind of multistage depressed collector for traveling-wave tube, including the insulation porcelain cylinder with inner cavity, receiving is fixed on the insulation porcelain
Interior collector in tube inner chamber, and the outer collector being installed on insulation porcelain drum outer wall；The interior collector includes along insulation
The prime collector and final stage collector of porcelain cylinder axial arrangement；
The final stage collector includes body part, and the body part includes bottom wall part, and forward by bottom wall part edge
Grade collects the sidewall portion that extreme direction is extended；
It is formed in the bottom wall part towards electronics note injection direction, and the first cone with the coaxial arrangement of prime collector
Shape protrusion；
The final stage collector further includes having the bulge-structure being formed on body part；The bulge-structure includes being formed in
The second cone cell protrusion in sidewall portion interior sidewall surface.
Further, it is preferable to which scheme is, in collector axial direction, the axial cross section of the second cone cell protrusion is triangular in shape.
Further, it is preferable to scheme is, and in collector axial direction, the rectangular triangle of axial cross section of the second cone cell protrusion
Shape, the outer side edges of the close prime collector of the axial cross section of the second cone cell protrusion are the right angle vertical with collector axis
Side, the inner side edge away from prime collector of second cone cell protrusion are the bevel edge that angle is formed with collector axis.
Further, it is preferable to which scheme is, the second cone cell protrusion is configured as the company around the sidewall portion interior sidewall surface
Continuous cyclic structure or segmental structure.
Further, it is preferable to which scheme is, on the axial direction of collector, the final stage collector includes to be formed in side wall
The second cone cell of multilayer protrusion in portion's interior sidewall surface.
Further, it is preferable to scheme is, on the direction that final stage collects best prime collector, multilayer the second cone cell protrusion
Increasing height.
Further, it is preferable to which scheme is, the second cone cell protrusion is to be swelled to be formed outward by sidewall portion interior sidewall surface.
Further, it is preferable to which scheme is, the second cone cell protrusion is independent structure part, and is combined by welding solid
It is scheduled on sidewall portion interior side-wall surface.
Beneficial effects of the present invention are as follows:
1, the present invention compared with prior art, after electronics note enters final stage collector by prime collector, utilizes
The present invention increased other cone cell bulge-structures, a part of electronics on the basis of original final stage collecting pole structure is convex through the first cone cell
It is more at random under other cone cell bulge-structures to play the secondary electron generated after reflection, work of a part of electronics in electrostatic field
It can reflect and scatter through cone cell bulge-structure under, the collection convenient for collector to electronics solves highpowerpulse space traveling wave
The low problem of pipe efficiency of MDC.
2, the present invention utilizes matching between cone cell protrusion by structure design and layout design to increased cone cell protrusion
It closes, barrier effect is played to the electronics entered after scattering in final stage collector cavity, electronics is made to be difficult in return to high frequency interaction region,
Electronics reflux rate is reduced, diffusing reflection is realized in deflection to electrons repeatedly between each cone cell bulge-structure, further improves collection
Extremely to the collection efficiency of electronics.
3, collector provided by the invention increases final stage collector by electron bombardment using increased cone cell protrusion
It bombards area, collect area, improve the heat dissipation effect of collector, effectively prevent most electronics and directly bombard in final stage electrode
On, cause final stage collector local energy excessive, the problem of the service life of travelling-wave tubes and reliability decrease.
Detailed description of the invention
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Fig. 1 shows the collecting pole structure schematic diagram of one embodiment of the present invention.
Specific embodiment
Carry out the various exemplary embodiments of detailed description of the present invention now with reference to attached drawing.It should also be noted that unless in addition having
Body explanation, the unlimited system of component and the positioned opposite of step, numerical expression and the numerical value otherwise illustrated in these embodiments is originally
The range of invention.
Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to the present invention
And its application or any restrictions used.
Technology and equipment known to person of ordinary skill in the relevant may be not discussed in detail, but in appropriate situation
Under, the technology and equipment should be considered as part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
For existing collector designing technique, the bombardment of high current, travelling-wave tubes are directly born to highpowerpulse travelling-wave tubes
Efficiency of MDC is not high, and it is larger to backflow, reliability the problem of there is also hidden danger.Shown in referring to Fig.1, the present invention provides a kind of row
Wave duct multi-level depressurization collector, the collector include the insulation porcelain cylinder 2 with inner cavity, and receiving is fixed on the insulation porcelain cylinder 2
Interior collector 1 in inner cavity, and the outer collector 3 being installed on 2 outer wall of insulation porcelain cylinder；The interior collector 1 includes along exhausted
The prime collector 11 and final stage collector 12 that edge porcelain cylinder 2 is configured axially；
The final stage collector 12 includes body part, and the body part includes bottom wall part 121；And by bottom wall part 121
The sidewall portion 122 that edge extends to 11 direction of prime collector；
It is formed in the bottom wall part 121 towards electronics note injection direction, and be coaxially disposed with prime collector 11
First cone cell protrusion 4；The final stage collector 12 further includes having the bulge-structure being formed on body part, the bulge-structure quilt
It is configured to electron reflection of the bombardment on final stage collector can be scattered, be collected when electronics note enters final stage by prime collector
After extremely, using the present invention, increased other cone cell bulge-structures, a part of electronics are passed through on the basis of original final stage collecting pole structure
The secondary electron generated after first cone cell protrusion, 4 reflection more at random, a part of electronics under the effect of other cone cell bulge-structures
It can reflect and scatter through cone cell bulge-structure under the action of electrostatic field, the collection convenient for collector to electronics reduces the electricity that backflows
Son improves collection efficiency, can solve the problems, such as that highpowerpulse space travelling wave tube efficiency of MDC is low.
Specifically, as shown in connection with fig. 1, Fig. 1 shows the collecting pole structure schematic diagram of one embodiment of the present invention.It is described convex
Playing structure includes the second cone cell protrusion 5 being formed in 122 interior sidewall surface of sidewall portion.Preferably, described in collector axial direction
The axial cross section of second cone cell protrusion 5 is triangular in shape.In present embodiment, the second cone cell protrusion 5 can be played to a part
The secondary electron that electronics generates after 4 reflection of the first cone cell protrusion can play the effect for further scattering and upsetting, can also be to one
The electronics that part is scattered under electrostatic field provides further reflection and scatters, the collection convenient for collector to electronics, and
It is capable of forming a collection chamber by the cooperation of body part bottom wall part 121, sidewall portion 122 and the second cone cell protrusion 5, due to
Second cone cell protrusion 5 is located at the head end of final stage collector 12, closer to the in-position of electronics note, so that convex through the first cone cell
The secondary electron generated after 4 reflections is played more to be difficult to cross 5 return high frequency interaction region of the second cone cell protrusion, the second cone cell protrusion
5 play scattering and stop electronic action, so that the collecting effect of collector is more preferably.In addition to upper to greatest extent increase electronics
Scattering area, improve final stage collector by electron bombardment bombardment area, collect area, improve collector heat dissipation effect
Fruit, in conjunction with schematic structure, preferably in present embodiment, the rectangular triangle of axial cross section of the second cone cell protrusion 5 should
The outer side edges 51 of the close prime collector 11 of the axial cross section of second cone cell protrusion 5 are the right angle vertical with collector axis
Side, the inner side edge 52 away from prime collector 11 of the second cone cell protrusion 5 are the bevel edge that angle is formed with collector axis.
Go out as shown in connection with fig. 1, preferably scheme is, on the axial direction of collector, the final stage collector 12 is wrapped
It has included and has been formed in the second cone cell of multilayer protrusion 5 in 122 interior sidewall surface of sidewall portion；In final stage collector 12 to prime collector 11
On direction, the increasing height of the second cone cell of multilayer protrusion 5.Such structure bring beneficial effect is that it is possible at limited end
In grade collecting pole structure size, increase the scattering area of electronics as far as possible, so that collector collects the more efficient of electronics, and
Using more second cone cell protrusions 5, increases bombardment area, collection area of the final stage collector 12 by electron bombardment, improve collector
Heat dissipation effect, the level configurations of the second cone cell of multilayer protrusion 5 upper to greatest extent can stop electronics to return to high frequency interaction region.
And dispersion effect of the electronics between bulge-structure in order to further increase, and upper collection electronics to greatest extent,
Preferably, the second cone cell protrusion 5 is configured as the continuous cyclic structure around 122 interior sidewall surface of sidewall portion.But
In other embodiments, the second cone cell protrusion may be alternatively configured as segmental structure, but it is understood that, it is corresponding to receive
Collector can also reduce the collecting effect of electronics, to this present invention and with no restrictions.
For the generation type of the second cone cell protrusion 5, the second cone cell protrusion 5 can be for by sidewall portion inner sidewall
Facing out protuberance formation or second cone cell protrusion 5 is independent structure part, and combines be fixed on by welding
Sidewall portion interior side-wall surface, the present invention is with no restrictions.
In the case that actual use average state and, collector collection rate provided by the invention is returned up to 85% or more
Flow rate can be down to 1% hereinafter, can be improved 3%~5% compared with conventional acquisition pole collection efficiency from original 5%.Furthermore of the invention
The collector of offer, does not influence collector radial dimension, and lateral dimension increases length only insulation spacing 5mm or so, can lead to
Simple part processing is crossed to realize, which is applied to highpowerpulse space travelling wave tube, mentions to TWT efficiency and reliability
Rising has preferable effect.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention may be used also on the basis of the above description for those of ordinary skill in the art
To make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all to belong to this hair
The obvious changes or variations that bright technical solution is extended out are still in the scope of protection of the present invention.
Claims (8)
1. a kind of multistage depressed collector for traveling-wave tube, including the insulation porcelain cylinder with inner cavity, receiving is fixed on the insulation porcelain cylinder
Interior collector in inner cavity, and the outer collector being installed on insulation porcelain drum outer wall；The interior collector includes along insulation porcelain
The prime collector and final stage collector of cylinder axial arrangement；It is characterized in that,
The final stage collector includes body part, and the body part includes bottom wall part, and is received from bottom wall part edge to prime
The sidewall portion that collection extreme direction is extended；
It is formed in the bottom wall part towards electronics and infuses injection direction, and is convex with the first cone cell of prime collector coaxial arrangement
It rises；
The final stage collector further includes having the bulge-structure being formed on body part；The bulge-structure includes being formed in side wall
The second cone cell protrusion in portion's interior sidewall surface.
2. collector according to claim 1, which is characterized in that in collector axial direction, the second cone cell protrusion
Axial cross section is triangular in shape.
3. collector according to claim 1, which is characterized in that in collector axial direction, the second cone cell protrusion
The rectangular triangle of axial cross section, the outer side edges of the close prime collector of the axial cross section of the second cone cell protrusion are and collection
The vertical right-angle side of polar axis line, the inner side edge away from prime collector of second cone cell protrusion are to be formed to press from both sides with collector axis
The bevel edge at angle.
4. collector according to claim 1, which is characterized in that the second cone cell protrusion is configured as around the side
The continuous cyclic structure or segmental structure of wall portion interior sidewall surface.
5. collector according to claim 1, which is characterized in that on the axial direction of collector, the final stage is collected
Pole includes to be formed in the second cone cell of multilayer protrusion in sidewall portion interior sidewall surface.
6. collector according to claim 5, which is characterized in that on the direction that final stage collects best prime collector,
The increasing height of multilayer the second cone cell protrusion.
7. collector according to claim 1, which is characterized in that the second cone cell protrusion is by sidewall portion interior sidewall surface
Protuberance is formed outward.
8. collector according to claim 1, which is characterized in that the second cone cell protrusion is independent structure part, and is led to
The mode for crossing welding, which combines, is fixed on sidewall portion interior side-wall surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639416.2A CN109860003B (en) | 2018-12-29 | 2018-12-29 | Multistage depressed collector of travelling wave tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811639416.2A CN109860003B (en) | 2018-12-29 | 2018-12-29 | Multistage depressed collector of travelling wave tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109860003A true CN109860003A (en) | 2019-06-07 |
| CN109860003B CN109860003B (en) | 2021-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811639416.2A Active CN109860003B (en) | 2018-12-29 | 2018-12-29 | Multistage depressed collector of travelling wave tube |
Country Status (1)
| Country | Link |
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| CN (1) | CN109860003B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113130277A (en) * | 2021-04-21 | 2021-07-16 | 中国科学院空天信息创新研究院 | Collecting pole assembly and klystron permanent magnet focusing system |
| CN113130276A (en) * | 2021-04-20 | 2021-07-16 | 中国科学院空天信息创新研究院 | Multistage depressed collector |
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| CN102110564A (en) * | 2009-12-24 | 2011-06-29 | 中国科学院电子学研究所 | Four-stage depressed collector for space traveling-wave tube |
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| US6111358A (en) * | 1998-07-31 | 2000-08-29 | Hughes Electronics Corporation | System and method for recovering power from a traveling wave tube |
| US6462474B1 (en) * | 2000-03-21 | 2002-10-08 | Northrop Grumman Corp. | Grooved multi-stage depressed collector for secondary electron suppression |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113130276A (en) * | 2021-04-20 | 2021-07-16 | 中国科学院空天信息创新研究院 | Multistage depressed collector |
| CN113130277A (en) * | 2021-04-21 | 2021-07-16 | 中国科学院空天信息创新研究院 | Collecting pole assembly and klystron permanent magnet focusing system |
| CN113130277B (en) * | 2021-04-21 | 2024-02-13 | 中国科学院空天信息创新研究院 | Collector assembly and klystron permanent magnet focusing system |
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| Publication number | Publication date |
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| CN109860003B (en) | 2021-02-02 |
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