CN209249425U - A kind of traveling wave tube electron gun based on carbon nanotube cold cathode - Google Patents
A kind of traveling wave tube electron gun based on carbon nanotube cold cathode Download PDFInfo
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- CN209249425U CN209249425U CN201920105908.7U CN201920105908U CN209249425U CN 209249425 U CN209249425 U CN 209249425U CN 201920105908 U CN201920105908 U CN 201920105908U CN 209249425 U CN209249425 U CN 209249425U
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- anode
- focusing electrode
- cable
- electron gun
- carbon nanotube
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Abstract
The utility model belongs to electron gun technical field, in particular a kind of traveling wave tube electron gun based on carbon nanotube cold cathode, including emission of cathode source, focusing electrode and anode, the emission of cathode source is connect with exterior source of energy, the output end of the focusing electrode and anode along the emission of cathode source linearly arranges, and the middle position of the focusing electrode and anode offers electron beam channel；By opening up the second cable cavity on the outer wall of anode, and the cable layer of the variable number of plies is set in the second cable cavity, according to the size of electron beam, the number of plies of changeable cable layer, to change the size of pressurization, but the load of cable is smaller, the permanent magnet of positive magnetic pole is also equipped on inner wall simultaneously, magnetic field is reinforced, certain energy is saved, and cable layer and permanent magnet are set on focusing electrode, reduce the diffusion of electronics, and scattering dilatation chamber is designed as ellipticity, reduce the dissipation of electronics, so that the intensity of electron beam be enabled to increase.
Description
Technical field
The utility model belongs to electron gun technical field, and in particular to a kind of travelling-wave tubes electricity based on carbon nanotube cold cathode
Sub- rifle.
Background technique
Microwave, millimeter wave electrovacuum radiation source device as the Military Electronics such as radar, electronic countermeasure, space communication system not
The core devices that can lack are constantly subjected to pay attention to extensively.Cathode and electron-optical system then occupy act in above-mentioned electron tube
The status of sufficient weight, system device generally use thermal emission cathode system, and after decades of development, thermal emission cathode technique is non-
It is often mature, it is widely used in all kinds of electron tubes.But there are following significant drawbacks for thermal emission cathode: structure is complicated, at
This height, cathod system are made of various metals and ceramic component, since hot cathode work is in the hot environment of thousands of degree, cathode
The filament of heating is easily broken off or short circuit, leads to device failure, thus cathod system damage is the master of electron tube failure
Want reason；On the other hand due to needing heating power, the complexity of system is increased, system effectiveness is reduced, when needing longer
Between can be only achieved operating temperature, particularly with high power device, starting the time is often up to a few minutes, to use bring it is very big
It is inconvenient.
The Chinese utility model of Publication No. CN105590820A proposes a kind of travelling-wave tubes based on carbon nanotube cold cathode
Electron gun, the traveling wave tube electron gun have the disadvantage that
Three pressurization anodes are being arranged in output end in the traveling wave tube electron gun, to constrain electron beam, but change anode
Upper voltage value rated value is only fixed, and pressure effect is fixed；
In addition it is not provided with pressurizing device on focusing electrode, when electron beam from cathode project, have in focusing electrode certain
It pressurizes after diffusion, the electron beam of part can be made to dissipate, reduce the intensity of electron beam.
Utility model content
To solve the problems mentioned above in the background art.The utility model provides a kind of based on carbon nanotube cold cathode
Traveling wave tube electron gun, have it is obvious to the pressure effect of electron beam, electrons spread is few, the high feature of electron beam intensity.
To achieve the above object, the utility model provides the following technical solutions: a kind of row based on carbon nanotube cold cathode
Wave duct electron gun, including emission of cathode source, focusing electrode and anode, the emission of cathode source are connect with exterior source of energy, described poly-
The output end of burnt pole and anode along the emission of cathode source linearly arranges, and the middle position of the focusing electrode and anode opens up
There is electron beam channel, the electron beam channel runs through the focusing electrode and anode, and the focusing electrode includes at least focusing electrode frame
And aperture plate, scattering dilatation chamber is offered at the bosom position of the focusing electrode frame, the inner wall of the focusing electrode frame leans on
The one end in the nearly emission of cathode source is fixedly installed with aperture plate, and the first cable appearance is also provided on the outer wall of the focusing electrode frame
Chamber offers the second cable cavity on the outer wall of the anode, and the inner wrap of the second cable cavity has cable layer, institute
Stating cable layer number is several layers.
Preferably, the anode includes at least the first anode, second plate and third anode, the first anode, second
The output extreme direction of anode and third anode along the emission of cathode source is uniformly arranged, the first anode, second plate and
The second cable cavity is offered on the outer wall of three anodes.
Preferably, it is wound with respectively in the second cable cavity of the first anode, second plate and third anode
The different cable layer of quantity.
Preferably, be equipped with permanent magnet on the inner sidewall of the focusing electrode and the anode, the permanent magnet respectively with institute
It states focusing electrode to be fixedly connected with anode, the permanent magnet conforms to the inner wall of the focusing electrode and anode.
Preferably, the permanent magnet is positive magnetic pole.
Preferably, the scattering dilatation chamber is ellipticity.
Preferably, the voltage value on the first anode, second plate and third anode is incremented by successively.
Compared with prior art, the utility model has the beneficial effects that
1, by opening up the second cable cavity on the outer wall of anode, and the variable number of plies is set in the second cable cavity
According to the size of electron beam, the number of plies of cable layer can be changed when in use in cable layer, to change the size of pressurization, but cable
Load it is smaller, while being also equipped on inner wall the permanent magnet of positive magnetic pole, magnetic field can be carried out in the case where former electromagnetic field
Reinforce, reduces power demands, save certain energy.
2 and cable layer and permanent magnet are set on focusing electrode, pressurizes to electron beam initial end, makes the diffusion of electronics
Reduce, and scattering dilatation chamber is designed as ellipticity, reduces the dissipation of electronics, so that the intensity of electron beam be enabled to increase.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.
In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic cross-sectional view of the utility model；
Fig. 3 is the side structure schematic view of the utility model；
In figure: 1, emission of cathode source；2, focusing electrode；201, the first cable cavity；202, dilatation chamber is scattered；21, focusing electrode
Frame；22, aperture plate；3, anode；301, the second cable cavity；31, the first anode；32, second plate；33, third anode；34,
Cable layer；4, electron beam channel；5, permanent magnet.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment
Fig. 1-3 is please referred to, the utility model is the following technical schemes are provided: a kind of travelling-wave tubes based on carbon nanotube cold cathode
Electron gun, including emission of cathode source 1, focusing electrode 2 and anode 3, emission of cathode source 1 are connect with exterior source of energy, focusing electrode 2 and sun
Output end of the pole 3 along emission of cathode source 1 linearly arranges, and the middle position of focusing electrode 2 and anode 3 offers electron beam channel
4, electron beam channel 4 runs through focusing electrode 2 and anode 3, and focusing electrode 2 includes at least focusing electrode frame 21 and aperture plate 22, focusing electrode frame
Scattering dilatation chamber 202 is offered at the bosom position of frame 21, the inner wall of focusing electrode frame 21 is close to the one of emission of cathode source 1
End is fixedly installed with aperture plate 22, is also provided with the first cable cavity 201 on the outer wall of focusing electrode frame 21, on the outer wall of anode 3
The second cable cavity 301 is offered, the inner wrap of the second cable cavity 301 has cable layer 34, if 34 quantity of cable layer is
Dried layer.
The second cable cavity 301, the inside of the second cable cavity 301 are offered in the present embodiment, on the outer wall of anode 3
It is wound with cable layer 34,34 quantity of cable layer is several layers, by opening up the second cable cavity 301 on the outer wall of anode 3, and
The cable layer 34 of the variable number of plies is set in the second cable cavity 301, when in use, according to the size of electron beam, line can be changed
The number of plies of cable layer 34, to change the size of pressurization, but the load of cable is smaller, while positive magnetic pole is also equipped on inner wall
Permanent magnet 5 can reinforce magnetic field in the case where former electromagnetic field, reduce power demands, save certain energy, and
Cable layer 34 and permanent magnet 5 are set on focusing electrode 2, pressurizes to electron beam initial end, reduces the diffusion of electronics, and will
Scattering dilatation chamber 202 is designed as ellipticity, reduces the dissipation of electronics, so that the intensity of electron beam be enabled to increase.
Specifically, anode 3 includes at least the first anode 31, second plate 32 and third anode 33, the first anode 31, second
The output extreme direction of anode 32 and third anode 33 along emission of cathode source 1 is uniformly arranged, the first anode 31, second plate 32 and
Offer the second cable cavity 301 on the outer wall of three anodes 33, the of the first anode 31, second plate 32 and third anode 33
The different cable layer 34 of quantity is wound in two cable cavities 301 respectively, it can be in the first anode 31, second plate 32 and third
Cable layer 34 is installed on anode 33, different size of voltage is applied to cable layer 34 on three anodes 3, to carry out about to electron beam
Beam.
Specifically, be equipped with permanent magnet 5 on the inner sidewall of focusing electrode 2 and anode 3, permanent magnet 5 respectively with focusing electrode 2 and sun
Pole 3 is fixedly connected, and permanent magnet 5 conforms to the inner wall of focusing electrode 2 and anode 3, and permanent magnet 5 is positive magnetic pole, can be in former electromagnetic field
In the case of, magnetic field is reinforced, power demands are reduced, saves certain energy.
Specifically, scattering dilatation chamber 202 is ellipticity, scattering dilatation chamber 202 is designed as ellipticity, reduces disappearing for electronics
It dissipates, so that the intensity of electron beam be enabled to increase.
Specifically, the voltage value on the first anode 31, second plate 32 and third anode 33 is incremented by successively, to three anodes
Cable layer 34 applies different size of voltage on 3, to constrain electron beam.
The working principle and process for using of the utility model: after the utility model installs, when in use, by sun
The second cable cavity 301 is opened up on the outer wall of pole 3, and the cable layer 34 of the variable number of plies is set in the second cable cavity 301,
In use, according to the size of electron beam, the number of plies of cable layer 34 can be changed, to change the size of pressurization, but the load of cable
It is smaller, while it being also equipped on inner wall the permanent magnet 5 of positive magnetic pole, magnetic field can be reinforced in the case where former electromagnetic field,
Reduce power demands, save certain energy, and cable layer 34 and permanent magnet 5 are set on focusing electrode 2, it is initial to electron beam
End is pressurizeed, and the diffusion of electronics is reduced, and scattering dilatation chamber 202 is designed as ellipticity, reduces the dissipation of electronics, thus
The intensity of electron beam is enabled to increase.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of traveling wave tube electron gun based on carbon nanotube cold cathode, including emission of cathode source (1), focusing electrode (2) and anode
(3), it is characterised in that: the emission of cathode source (1) connect with exterior source of energy, and the focusing electrode (2) and anode (3) are along described
The output end in emission of cathode source (1) linearly arranges, and the middle position of the focusing electrode (2) and anode (3) offers electronics
Beam passage (4), the electron beam channel (4) run through the focusing electrode (2) and anode (3), and the focusing electrode (2) includes at least poly-
Burnt pole frame (21) and aperture plate (22) offer scattering dilatation chamber at the bosom position of the focusing electrode frame (21)
(202), the inner wall of the focusing electrode frame (21) is fixedly installed with aperture plate (22) close to one end of the emission of cathode source (1),
It is also provided with the first cable cavity (201) on the outer wall of the focusing electrode frame (21), is opened up on the outer wall of the anode (3)
There is the second cable cavity (301), the inner wrap of the second cable cavity (301) has cable layer (34), the cable layer
(34) quantity is several layers.
2. a kind of traveling wave tube electron gun based on carbon nanotube cold cathode according to claim 1, it is characterised in that: described
Anode (3) includes at least the first anode (31), second plate (32) and third anode (33), the first anode (31), second
Anode (32) and third anode (33) are uniformly arranged along the output extreme direction of the emission of cathode source (1), the first anode
(31), the second cable cavity (301) is offered on the outer wall of second plate (32) and third anode (33).
3. a kind of traveling wave tube electron gun based on carbon nanotube cold cathode according to claim 2, it is characterised in that: described
It is wound with number respectively in the second cable cavity (301) of the first anode (31), second plate (32) and third anode (33)
Measure the different cable layers (34).
4. a kind of traveling wave tube electron gun based on carbon nanotube cold cathode according to claim 1, it is characterised in that: described
Be equipped with permanent magnet (5) on the inner sidewall of focusing electrode (2) and the anode (3), the permanent magnet (5) respectively with the focusing electrode
(2) it is fixedly connected with anode (3), the permanent magnet (5) conforms to the inner wall of the focusing electrode (2) and anode (3).
5. a kind of traveling wave tube electron gun based on carbon nanotube cold cathode according to claim 4, it is characterised in that: described
Permanent magnet (5) is positive magnetic pole.
6. a kind of traveling wave tube electron gun based on carbon nanotube cold cathode according to claim 1, it is characterised in that: described
Scattering dilatation chamber (202) is ellipticity.
7. a kind of traveling wave tube electron gun based on carbon nanotube cold cathode according to claim 2, it is characterised in that: described
Voltage value on the first anode (31), second plate (32) and third anode (33) is incremented by successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920105908.7U CN209249425U (en) | 2019-01-22 | 2019-01-22 | A kind of traveling wave tube electron gun based on carbon nanotube cold cathode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920105908.7U CN209249425U (en) | 2019-01-22 | 2019-01-22 | A kind of traveling wave tube electron gun based on carbon nanotube cold cathode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209249425U true CN209249425U (en) | 2019-08-13 |
Family
ID=67536440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920105908.7U Expired - Fee Related CN209249425U (en) | 2019-01-22 | 2019-01-22 | A kind of traveling wave tube electron gun based on carbon nanotube cold cathode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209249425U (en) |
-
2019
- 2019-01-22 CN CN201920105908.7U patent/CN209249425U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190813 Termination date: 20210122 |