CN206250153U - A kind of traveling wave tube electron gun - Google Patents
A kind of traveling wave tube electron gun Download PDFInfo
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- CN206250153U CN206250153U CN201621267810.4U CN201621267810U CN206250153U CN 206250153 U CN206250153 U CN 206250153U CN 201621267810 U CN201621267810 U CN 201621267810U CN 206250153 U CN206250153 U CN 206250153U
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- anode
- traveling wave
- electron gun
- wave tube
- tube electron
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Abstract
The utility model discloses a kind of traveling wave tube electron gun, and traveling wave tube electron gun includes negative electrode, anode and gun housing, also includes：For the anode keeper of fixed anode；It is welded on the metal spring piece of distance and the fixture for fixing the length after metal spring piece adjustment between adjustable negative electrode and the anode between gun housing and anode keeper.The utility model be may be implemented in after the completion of traveling wave tube electron gun erection welding, and the adjustment to the distance between negative electrode and anode is realized by the adjustment to metal spring piece length, so that the size of the total current of traveling wave tube electron gun transmitting is controllable.
Description
Technical field
The utility model is related to vacuum microwave field of electronic devices.More particularly, to a kind of traveling wave tube electron gun.
Background technology
In the prior art, the negative electrode for traveling wave tube electron gun is most for hot cathode.When traveling wave tube electron gun works, receive
Up to more than 1000 DEG C of cathode surface because of electric field action launching electronics, focusing electrode causes the electronics note remittance that cathode surface is launched to heat
It is poly-.And the distance between negative electrode and anode are the key factors of the total current size for determining the transmitting of traveling wave tube electron gun.In theory
In the case of other conditions identical, the more near then emission current of distance is bigger between negative electrode and anode, the spacing of negative electrode and anode
Then emission current is smaller away from more.
The capability representation of each travelling-wave tubes gun cathode emission current performance of whole travelling-wave tubes, each traveling wave tube electron gun
The total current of emission of cathode carries out interaction in being directly used in radio frequency system with electromagnetic wave, so as to realize amplifying electromagnetic wave output
The function of power, so the uniformity of the total current size of each travelling-wave tubes gun cathode transmitting directly determines travelling-wave tubes performance
Uniformity, the total current of each travelling-wave tubes gun cathode transmitting needs accuracy very high.
As shown in figure 1, existing traveling wave tube electron gun includes that (negative electrode 2 includes cathodic body for the gun housing 1 of electron gun, negative electrode 2
With the peripheral heat shielding cartridge module of negative electrode), focusing electrode component 3, gasket ring 4 and anode 5.The gasket ring added between anode 5 and gun housing 1
4 to fixed negative pole 2 and anode 5 the distance between length required for, to obtain the design parameter of traveling wave tube electron gun,
And then the ideal value of the total current of travelling-wave tubes gun cathode transmitting is obtained, anode 5 is welded and fixed with gun housing 1.Erection welding is complete
Cheng Hou, the negative electrode 2 of the traveling wave tube electron gun cannot change with the distance of anode 5.
As described above, existing traveling wave tube electron gun erection welding technique is determined by the cushioning ring between anode and gun housing
The distance between the distance between position negative electrode and anode, negative electrode and anode reference value is calculated by design, by microscope
Measurement distance determines to increase certain thickness gasket ring between anode and gun housing, adds after gasket ring again by being measured microscopically checking.
The problem of this technique is：During whole erection welding, assembly technology is complicated, and repeatedly measurement is readily incorporated error, together
When counting accuracy cannot guarantee that so that the distance between negative electrode of traveling wave tube electron gun and anode are difficult precise control, tie
The bad control of uniformity and welding procedure of closing cathode performance may introduce the problem of error, cause traveling wave after the completion of erection welding
Can more or less there is deviation with expection in tube electron gun actual transmission total current.After the completion of welding, between negative electrode and anode
Distance cannot change again, and the total current size of travelling-wave tubes gun cathode transmitting cannot be adjusted.
Accordingly, it is desirable to provide a kind of traveling wave tube electron gun of the uniformity for improving travelling-wave tubes Emission Current In An Electron Gun size.
Utility model content
The purpose of this utility model is to provide a kind of traveling wave tube electron gun, solves existing traveling wave tube electron gun in assembling
The problem that negative electrode cannot be accurately positioned with anode distance in welding process, and then solve due to the bad control of the uniformity of cathode performance
Make and distance of the traveling wave tube electron gun during erection welding between negative electrode and anode cannot be accurately positioned caused by each
The total current size identical property of travelling-wave tubes gun cathode transmitting is bad, the indexs such as power output, power consumption is impacted, traveling wave
The uniformity of pipe performance is deteriorated.
To reach above-mentioned purpose, the utility model uses following technical proposals：
A kind of traveling wave tube electron gun, including negative electrode, anode and gun housing, the traveling wave tube electron gun also include
Anode keeper for fixing the anode；
Distance between the adjustable described negative electrode being welded between the gun housing and the anode keeper and the anode
Metal spring piece and the fixture for fixing the length after metal spring piece adjustment.
Preferably, the metal spring piece is metal bellows.
Preferably, described metal bellows one end and gun housing Welding, the other end and anode keeper Welding.
Preferably, anode is welded with the anode keeper Laser Welding.
Preferably, fixture is sealing.
A kind of preparation method of traveling wave tube electron gun, comprises the following steps：
Assemble and weld the negative electrode of traveling wave tube electron gun, gun housing, anode, the anode keeper for fixing the anode and
The metallic elastic of distance between adjustable described negative electrode and the anode between the gun housing and the anode keeper
Part；
According to the design parameter of traveling wave tube electron gun, by adjust negative electrode described in the length adjustment of the metal spring piece with
Distance between the anode, and determine the length of the metal spring piece；
The length that the metal spring piece determines is fixed by using fixture, is fixed between the negative electrode and the anode
Distance.
Preferably, while the design parameter according to traveling wave tube electron gun is tested the traveling wave tube electron gun,
By adjusting described in the length adjustment of the metal spring piece distance between negative electrode and the anode, and determine the metallic elastic
The length of part.
Preferably, the metal spring piece is metal bellows.
Preferably, described metal bellows one end uses soldering with gun housing, and the metal bellows other end is protected with anode
Gripping member uses soldering.
Preferably, the fixture be sealing, by the sealing is applied to the outer surface of the metal spring piece with
The length that the fixation metal spring piece determines, distance between the fixed negative electrode and the anode.
The beneficial effects of the utility model are as follows：
Technical scheme described in the utility model may be implemented in after the completion of traveling wave tube electron gun erection welding, by metal elastic
Property part length the adjustment adjustment of realizing to the distance between negative electrode and anode so that total electricity of traveling wave tube electron gun transmitting
The size of stream is controllable, and then accurately controls the total current for participating in dominant wave interaction of traveling wave tubes, and the phase for improving travelling-wave tubes is consistent
Property.The total current and the deviation of ideal value of the traveling wave tube electron gun transmitting of distance between negative electrode and anode are controlled using gasket ring at present
Can only control 5% or so, and the total current and ideal of the traveling wave tube electron gun transmitting in technical scheme described in the utility model
The deviation of value can be narrowed down within 0.5%.
Brief description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows the structural representation of traveling wave tube electron gun in the prior art.
Fig. 2 shows the structural representation of traveling wave tube electron gun disclosed in the utility model.
Specific embodiment
In order to illustrate more clearly of the utility model, the utility model is done into one with reference to preferred embodiments and drawings
The explanation of step.Similar part is indicated with identical reference in accompanying drawing.It will be appreciated by those skilled in the art that below
Specifically described content is illustrative and be not restrictive, and should not limit protection domain of the present utility model with this.
As shown in Fig. 2 the utility model discloses a kind of traveling wave tube electron gun, including：(negative electrode 2 includes negative electrode sheet to negative electrode 2
The peripheral heat shielding cartridge module of body and negative electrode), anode 5, focusing electrode component 3 and gun housing 1, wherein the structure of focusing electrode component 3 and
It is identical with existing traveling wave tube electron gun with the annexation between gun housing 1, and therefore not to repeat here；The traveling wave tube electron gun is also
Including the anode keeper 6 for fixed anode 5, the adjustable negative electrode 2 being welded between gun housing 1 and anode keeper 6 and sun
The metal spring piece 7 of distance and (fixture is in Fig. 2 for the fixture of length fixed after metal spring piece 7 is adjusted between pole 5
Not shown in).
Traveling wave tube electron gun disclosed in the utility model substitutes existing row as shown in Figure 1 using metal spring piece 7
The effect of the gasket ring 4 in wave duct electron gun, such that it is able to adjust negative electrode 2 and anode 5 by adjusting the length of metal spring piece 7
The distance between.
In this programme, metal spring piece 7 is metal bellows, and the metal bellows preferably uses identical metal with gun housing
Material is made, and is made for example with magnetism-free stainless steel.
In this programme, metal bellows one end is welded with gun housing 1, the other end and anode keeper 6 are welded, anode 5 with sun
Pole keeper 6 is welded, preferably：Metal bellows one end and the Welding of gun housing 1, the other end and the soldering of anode keeper 6 weldering
Connect, anode 5 is welded with the Laser Welding of anode keeper 6.
In this programme, anode keeper 6 can be gun housing connection ring, as shown in Figure 2.For example, can be by existing travelling-wave tubes electricity
The gun housing of sub- rifle is sectioned with anode 5 close to place, and the gun housing of electron gun is divided into the gun housing main body and and anode welded with negative electrode 2
The gun housing connection ring of 5 welding.Metal bellows one end and the welding of gun housing main body, the other end and the welding of gun housing connection ring.Metal wave
Line pipe is connected with gun housing main body and gun housing connection ring sleeve, and preferably set is enclosed in gun housing main body and gun housing connection ring outside, do so
The outer shape one of the outer shape of traveling wave tube electron gun disclosed in the utility model and existing traveling wave tube electron gun can be kept
Cause.Certainly, anode keeper 6 can also be made in addition, and its shape is not limited to keep the outside of existing traveling wave tube electron gun
Shape.
In this programme, the fixture for fixing the length of elastic component 7 is sealing.By adjusting determination metal bellows
After length, can by sealing is coated on the outer surface of metal bellows with fix metal bellows determine after length, sealing
Preferably thermal conductive insulation glue.
Preferred embodiment of the present utility model is related to a kind of preparation method of traveling wave tube electron gun, such as including following step
Suddenly：
Assemble the negative electrode and gun housing, length-adjustable metal spring piece, anode keeper, metal elastic of traveling wave tube electron gun
Property part is fixed between gun housing and anode keeper, and the assembly parts that will be obtained are welded, and obtain weldment.Anode can be by pricker
Weldering or Laser Welding are welded with anode keeper.
For the weldment for obtaining, according to the design parameter of traveling wave tube electron gun, by the length for adjusting metal spring piece
Distance between adjustment negative electrode and anode, so that the adjustment of the total current to the transmitting of travelling-wave tubes gun cathode is realized, to be gone
The design parameter of wave duct electron gun, i.e., required emission of cathode total current.Preferably, join according to the design of traveling wave tube electron gun
It is several while test traveling wave tube electron gun, by adjusting the length adjustment negative electrode of metal spring piece and the spacing of anode
From to obtain preferable travelling-wave tubes electron gun performance.According to electron gun preparation method of the present utility model so that obtain high phase place
The travelling-wave tubes of uniformity is possibly realized.
In the design parameter according to traveling wave tube electron gun, by adjust metal spring piece length adjustment negative electrode and anode it
Between distance, and after determining the length of metal spring piece, the length of determination of metal spring piece is fixed by using fixture with solid
Distance between negative electrode and anode is determined, so as to realize the fixation to the value of the total current of travelling-wave tubes gun cathode transmitting after adjustment.
For example, sealing is applied into (coating) in the outer surface of metal spring piece to fix the length of above-mentioned determination, sealing is preferably heat conduction
Insulating cement.
In this programme, metal spring piece is metal bellows, and the assembly parts that will be obtained carry out welding and further include：Welding
Negative electrode and gun housing, welded metal bellow one end and gun housing, the welded metal bellow other end and anode keeper, weld anode
With anode keeper, it is preferable that negative electrode uses Laser Welding with gun housing, metal bellows one end uses soldering, metal wave with gun housing
The line pipe other end uses soldering with anode keeper, and anode uses Laser Welding with anode keeper.
In this programme, in the design parameter according to traveling wave tube electron gun, by the length adjustment the moon for adjusting metal bellows
Between pole and anode apart from when, can be used fixture fix traveling wave tube electron gun cathode side or anode with metal bellows as boundary
Side, stretching or push traveling wave tube electron gun opposite side so that metal bellows is stretched or compressed therewith, thus adjust negative electrode with
The distance between anode, and then adjust the size of the total current of travelling-wave tubes gun cathode transmitting.Treat metal bellows adjust to
During required length, fixed using sealing, to reach stabling current output.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to implementation method of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, all of implementation method cannot be exhaustive here,
It is every to belong to the obvious change or change still in of the present utility model that the technical solution of the utility model extends out
The row of protection domain.
Claims (5)
1. a kind of traveling wave tube electron gun, including negative electrode, anode and gun housing, it is characterised in that the traveling wave tube electron gun also includes
Anode keeper for fixing the anode；
The gold of distance between the adjustable described negative electrode being welded between the gun housing and the anode keeper and the anode
Category elastic component and the fixture for fixing the length after the metal spring piece adjustment.
2. traveling wave tube electron gun according to claim 1, it is characterised in that the metal spring piece is metal bellows.
3. traveling wave tube electron gun according to claim 2, it is characterised in that described metal bellows one end and gun housing soldering
Welding, the other end and anode keeper Welding.
4. traveling wave tube electron gun according to claim 3, it is characterised in that anode is welded with the anode keeper Laser Welding
Connect.
5. the traveling wave tube electron gun according to any claim in Claims 1-4, it is characterised in that fixture is envelope
Glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621267810.4U CN206250153U (en) | 2016-11-23 | 2016-11-23 | A kind of traveling wave tube electron gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621267810.4U CN206250153U (en) | 2016-11-23 | 2016-11-23 | A kind of traveling wave tube electron gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206250153U true CN206250153U (en) | 2017-06-13 |
Family
ID=59001926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621267810.4U Active CN206250153U (en) | 2016-11-23 | 2016-11-23 | A kind of traveling wave tube electron gun |
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| CN (1) | CN206250153U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449335A (en) * | 2016-11-23 | 2017-02-22 | 北京真空电子技术研究所(中国电子科技集团公司第十二研究所） | Travelling-wave tube electronic gun and production method thereof |
| WO2022130116A1 (en) * | 2020-12-18 | 2022-06-23 | University Of Lancaster | Electron gun |
-
2016
- 2016-11-23 CN CN201621267810.4U patent/CN206250153U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449335A (en) * | 2016-11-23 | 2017-02-22 | 北京真空电子技术研究所(中国电子科技集团公司第十二研究所） | Travelling-wave tube electronic gun and production method thereof |
| CN106449335B (en) * | 2016-11-23 | 2018-02-02 | 北京真空电子技术研究所(中国电子科技集团公司第十二研究所） | A kind of preparation method of traveling wave tube electron gun and traveling wave tube electron gun |
| WO2022130116A1 (en) * | 2020-12-18 | 2022-06-23 | University Of Lancaster | Electron gun |
| GB2616176A (en) * | 2020-12-18 | 2023-08-30 | Univ Of Lancaster | Electron gun |
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