CN207602511U - A kind of magnetron tuner and magnetron - Google Patents
A kind of magnetron tuner and magnetron Download PDFInfo
- Publication number
- CN207602511U CN207602511U CN201721915841.0U CN201721915841U CN207602511U CN 207602511 U CN207602511 U CN 207602511U CN 201721915841 U CN201721915841 U CN 201721915841U CN 207602511 U CN207602511 U CN 207602511U
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- CN
- China
- Prior art keywords
- magnetron
- tuning
- water
- tuner
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 29
- 238000006073 displacement reaction Methods 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 67
- 239000000498 cooling water Substances 0.000 claims description 38
- 238000001816 cooling Methods 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 9
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000005476 soldering Methods 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 241000237858 Gastropoda Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Abstract
The utility model discloses a kind of magnetron tuner and magnetron, magnetron tuner includes turntable, worm gear, cyclic annular worm screw, tune cylinder and tuning disk, it tunes cylinder and tuning disk and magnetron is axially coaxial, the shaft of turntable and worm gear is axially set perpendicular to magnetron, cyclic annular worm screw is coated at tuning cylinder and the outer wall of the inner wall and tuning cylinder of cyclic annular worm screw is equipped with matched screw thread, the shaft of cyclic annular worm screw is coaxially disposed with magnetron, the rotation of turntable drives worm gear rotation to be rotated with cyclic annular worm screw of linking, the rotation of cyclic annular worm screw drives tuning cylinder and tuning disk along magnetron axial displacement, to realize the tuning to magnetron by the displacement for tuning disk along magnetron axial direction.The utility model can improve the stability and reliability of magnetron.
Description
Technical field
The utility model is related to vacuum electron device technical fields.More particularly, to a kind of magnetron tuner and
Magnetron.
Background technology
Magnetron has a clear superiority compared to other devices in homogeneous tube efficiency, use condition and device size etc.,
The high power magnetic keyholed back plate requirement working frequency for applying to accelerator is stablized, it is ensured that the microwave signal of output is in required a certain frequency
On point, to meet the work requirements of accelerator.Meanwhile as the high-power microwave source of accelerator, obtain the magnetron of application
Peak power has reached number MW ranks.With the raising of pulse output power, the heat dissipation problem of magnetron becomes increasingly conspicuous, it may be said that dissipates
Hot property largely determines the stability of magnetron working frequency and the functional reliability of homogeneous tube.
The tuner of magnetron adds in some moveable frequency-modulation elements in resonant tank, by changing load-reaction
Equivalent susceptance into oscillation circuit realizes tuber function.Enter height generally by by materials such as metal or aluminium oxide ceramics
In frequency field.Oxygen-free copper is used when conductivity are the material of finite value in tuner, because Kelvin effect is in tuner
Wall certainly will cause high-frequency loss, generate heat accumulation phenomena.When output power reaches several MW ranks, tuner can be because of ohm
Heating causes high-frequency loss to increase, more serious so as to cause heat accumulation phenomena, this can seriously affect the stabilization of magnetron work
Property and reliability.
The shaft of the turntable of existing magnetron tuner is coaxial with magnetron, and tuning is driven by the rotation of turntable
Bar and tuning disk are along magnetron axial displacement, to realize the tuning to magnetron by the displacement for tuning disk along magnetron axial direction.
As shown in Figure 1, existing magnetron tuner does not accommodate water cooling component feature space, tuner can not be eliminated in the course of work
In influence of the heat accumulation phenomena to the stability of magnetron working frequency and the functional reliability of homogeneous tube, magnetron stability
It is relatively low with reliability.
Accordingly, it is desirable to provide a kind of magnetron tuner and magnetron with high stability and reliability.
Utility model content
The purpose of this utility model is to provide a kind of magnetron tuner of achievable water cooling and including this tuning
The magnetron of device.
In order to achieve the above objectives, the utility model uses following technical proposals：
The utility model first aspect provides a kind of magnetron tuner, including turntable, worm gear, cyclic annular worm screw, tuning
Cylinder and tuning disk, the tuning cylinder and tuning disk and magnetron are axially coaxial, and the shaft of the turntable and worm gear is perpendicular to magnetic control
Pipe is axially set, and the ring-type worm screw is coated at the outer wall of the tuning cylinder and the inner wall of the cyclic annular worm screw and the tuning cylinder
Equipped with matched screw thread, the shaft of the ring-type worm screw is coaxially disposed with magnetron, and the rotation of the turntable drives the worm gear
Rotation drives the tuning cylinder and tuning disk along magnetron axis with the cyclic annular worm screw rotation that links, the rotation of the ring-type worm screw
To displacement, to realize the tuning to magnetron by displacement of the tuning disk along magnetron axial direction.
The turntable that the magnetron tuner that the utility model first aspect provides is used turntable by existing tuner
Turntable is improved to positioned at magnetron tube body top surface and is located at magnetron tube body side, and band is realized by using Worm Wheel System component
Displacement of the dynamic tuning disk along magnetron axial direction, and then realize the tuning to magnetron.In the base for not influencing the tuning to magnetron
It on plinth, is provided in tuner and accommodates water cooling component feature space so that by setting water cooling component in tuner to disappear
It removes or inhibits the heat accumulation phenomena of tuner during the work time to the stability of magnetron working frequency and the work of homogeneous tube
The influence for making reliability is possibly realized.
Preferably, the magnetron tuner that the utility model first aspect provides further includes water cooling component, the water cooling group
Part includes：Be sheathed in the tuning cylinder and the cooling water pipe of outer wall and the tuning cylinder inner wall formation connected space, with it is described
The open top connection of cooling water pipe enters water swivel and the water outlet connector connected with the connected space, the cooling water pipe
Bottom opening higher than the tuning disk top surface, space in the pipe of the cooling water pipe, the cooling water pipe bottom opening to institute
Cooling water water route is collectively formed with the connected space in the space for stating tuning disk top surface.It is this in tuner add in include into
The structure of the water cooling component of water swivel, cooling water pipe and water outlet connector can be eliminated or inhibit tuner during the work time
Influence of the heat accumulation phenomena to the stability of magnetron working frequency and the functional reliability of homogeneous tube.
Preferably, the utility model first aspect provide magnetron tuner in, it is described enter water swivel and it is described go out
One of water swivel is located above the turntable, it is described enter water swivel and the water outlet connector it is opposite disposed.Cooling water is extended with this
Flow path, realize the cooling to tuner.
Preferably, the magnetron tuner that the utility model first aspect provides further comprises water cooling modular support
Part, the cooling water pipe enter water swivel and water outlet connector respectively in connection with being fixed on the water cooling component support piece.
Preferably, in the magnetron tuner that the utility model first aspect provides, the institute adjacent with the tuning cylinder
It states water cooling component support piece side wall and is circumferentially provided at least one slot, sealing ring is arranged in the slot, so that the water cooling component
Support element and the tuning cylinder water-tight fits.Due in the tuner course of work, tuning cylinder can along magnetron axial displacement,
Watertightness between the water cooling component support piece side wall adjacent with tuning cylinder and tuning cylinder is relatively low, can lead to the close of cooling water water route
Envelope property reduces, therefore the magnetron tuner that the utility model first aspect provides adopts the structure further reinforcement cooling
The leakproofness in water water route.
Preferably, in the magnetron tuner that the utility model first aspect provides, the sealing ring is rubber seal
Circle.
Preferably, in the magnetron tuner that the utility model first aspect provides, the magnetron tuner is into one
Step includes tuning block support element, and the worm gear and cyclic annular worm screw are supported respectively by bearing with reference to the tuning block is fixed on
Part.
Preferably, in the magnetron tuner that the utility model first aspect provides, the underrun of the tuning cylinder
It is brazed and is fixed with the top surface of the tuning disk.
The utility model second aspect provides a kind of magnetron, the magnetron tune provided including the utility model first aspect
Humorous device.
The beneficial effects of the utility model are as follows：
Technical solution described in the utility model provides on the basis of not influencing to the tuning of magnetron in tuner
Receiving water cooling component feature space so that by setting water cooling component in tuner to eliminate or inhibit tuner working
Influence of the heat accumulation phenomena to the stability of magnetron working frequency and the functional reliability of homogeneous tube in the process is possibly realized.
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 diagrammatic cross-section of existing magnetron tuner.
Fig. 2 shows the diagrammatic cross-sections for the magnetron tuner that the utility model embodiment provides.
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 component is indicated with identical reference numeral in attached 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 the scope of protection of the utility model with this.
As shown in Fig. 2, one embodiment of the utility model provides a kind of magnetron tuner, including：Including adjusting
Humorous component support piece 11, turntable 12, worm gear 13, cyclic annular worm screw 14, tuning cylinder 15, metal bellows 16 and tuning disk 17, wherein,
Metal bellows 16 is optional, turntable 12, worm gear 13, cyclic annular worm screw 14, tuning cylinder 15, metal bellows 16 and tuning disk 17
Form tuning block.
Tuning block support element 11 combines the shell for being fixed on magnetron, and worm gear 13 and cyclic annular worm screw 14 combine and be fixed on tune
Humorous component support piece 11, tunes cylinder 15 and tuning disk 17 and magnetron electronics note direction of travel is coaxial, and the direction is in the present embodiment
In to become magnetron axial.The bottom surface of tuning cylinder 15 is fixedly welded on the top surface of tuning disk 17 or integrally formed with tuning disk 17.
The both ends of metal bellows 16 are respectively in connection with turn for being fixed on tuning block support element 11 and tuning disk 17, turntable 12 and worm gear 13
Axis is axially set perpendicular to magnetron, and cyclic annular worm screw 14, which is coated at, tunes the inner wall of cylinder 15 and cyclic annular worm screw 14 and tuning cylinder 15
Outer wall is equipped with matched screw thread 18, and shaft and the magnetron of cyclic annular worm screw 14 are coaxially disposed, and the rotation of turntable 12 can drive worm gear
13 rotations are rotated with cyclic annular worm screw 14 of linking, and the rotation of cyclic annular worm screw 14 can drive tuning cylinder 15 and tuning disk 17 along magnetron axis
To displacement, to realize the tuning to magnetron by the displacement for tuning disk 17 along magnetron axial direction, i.e., disk 17 is tuned by change
Change the working frequency of magnetron into the depth of resonance space.Wherein, the effect of optional metal bellows 16 is to strengthen
Tune stability of the disk 17 along the displacement of magnetron axial direction.
In the present embodiment, the inner wall of cyclic annular worm screw 14 realizes mutual displacement with the outer wall of tuning cylinder 15 by the cooperation of screw thread 18
Meaning the rotation of its shaft cyclic annular worm screw 14 coaxial with magnetron will drive tuning cylinder 15 axial up and down (or preceding along magnetron
Displacement afterwards).When rotating turntable 12 either manually or by automated machine device, the rotation of turntable 12 drives worm gear 13 to rotate, snail
The cyclic annular worm screw 14 of rotation linkage of wheel 13 rotates, and the rotation of cyclic annular worm screw 14 drives tuning cylinder 15 along magnetron axial displacement, by
In tuning cylinder 15 be fixedly connected with tuning disk 17 or it is integrated be process, therefore the rotation of cyclic annular worm screw 14 also drives and tunes disk
17 along magnetron axial direction displacement, realize the tuning to magnetron.
Turntable 12 is set on magnetron tube body side by magnetron tuner provided in this embodiment, by using worm gear snail
Bar transmission component realizes the displacement for driving tuning disk 17 along magnetron axial direction, and then realizes the tuning to magnetron.It is not influencing
On the basis of the tuning of magnetron, magnetron tuner provided in this embodiment, which provides, accommodates water cooling component feature space, special
Not there is provided for install cooling water disengaging tuner disengaging water swivel space so that by being set in tuner
Water cooling component is put to eliminate or inhibit the heat accumulation phenomena of tuner during the work time to the steady of magnetron working frequency
The influence of qualitative and homogeneous tube functional reliability is possibly realized.
In the specific implementation, magnetron tuner provided in this embodiment further includes to cool down above-mentioned tuner
Water cooling component.The water cooling component includes being sheathed in tuning cylinder 15 and outer wall forms the cooling of connected space with 15 inner wall of tuning cylinder
Water pipe 21, connected on the top of cooling water pipe 21 with cooling water pipe enter water swivel 22 and the water outlet connector connected with connected space
23, the bottom opening of cooling water pipe 21 is higher than 17 top surface of tuning disk.In the pipe for entering water swivel 22, cooling water pipe 21 being located above
Space, cooling water pipe 21 bottom opening to tuning the space of disk 17 top surface, connected space and preferably to connect 22 opposed with entering water
Cooling water water route is collectively formed in water outlet connector 23.After entering water swivel 22 and accessing cooling water, cooling water in cooling water pipe 21 by flowing
Enter, the main heat exchange zone below 21 bottom opening of cooling water pipe is entered after cooling water pipe 21 is flowed out, due to cooling water water route
It is sealing, in the case of continuously access cooling water, the cooling water for completing heat exchange can be by the outer wall and tune of cooling water pipe 21
The connected space that humorous 15 inner wall of cylinder is formed rises, and is finally flowed out through water outlet connector 23.It is this in tuner add in include into
The structure of the water cooling component of water swivel 21, cooling water pipe 22 and water outlet connector 23 can be eliminated or inhibit tuner worked
Influence of the heat accumulation phenomena to the stability of magnetron working frequency and the functional reliability of homogeneous tube in journey.
In the specific implementation, magnetron tuner provided in this embodiment further comprises water cooling component support piece 25,
Cooling water pipe 21 enters water swivel 22 and water outlet connector 23 respectively in connection with being fixed on water cooling component support piece 25.Further, enter water to connect
First 22 and water outlet connector 23 combine be fixed on the position that water cooling component support piece 25 is located at 11 top of tuning block support element, be located at
The top of turntable 12 extends the flow path of cooling water with this, realizes the cooling to tuner.The present embodiment is by by turntable
12 are axially set perpendicular to magnetron, and the rotation that magnetron axial direction is will be perpendicular to using worm gear structure is converted to tuning disk 17
Along the displacement of magnetron axial direction, on the one hand provide for the space of water cooling component for magnetron, on the other hand can accurately adjust
The position of section tuning disk 17 and the fine tuning for realizing magnetron frequency.
In the specific implementation, water cooling component support piece 25 side wall adjacent with tuning cylinder 15 is circumferentially provided at least one slot,
Sealing ring 24 is arranged in slot, so that water cooling component support piece 25 and tuning 15 water-tight fits of cylinder.As shown in Figure 1, the present embodiment
In, it circumferentially opens there are two slot with the top of adjacent 25 side wall of water cooling component support piece of tuning cylinder 15, is arranged in each slot
Sealing ring 24.Since in the tuner course of work, tuning cylinder 15 can be adjacent with tuning cylinder 15 along magnetron axial displacement
Watertightness between 25 side wall of water cooling component support piece and tuning cylinder 15 is relatively low, can lead to the leakproofness in cooling water water route to reduce,
Therefore the leakproofness for further strengthening cooling water water route is adopted the structure in the present embodiment.
In the specific implementation, sealing ring 24 is rubber seal.
In the specific implementation, worm gear 13 and cyclic annular worm screw 14 are combined by bearing 19 be fixed on tuning block support element respectively
11.In addition, water cooling component support piece 25 is also in relation with being fixed on tuning block support element 11 in the present embodiment, it can also certainly
Directly in conjunction with the shell for being fixed on magnetron.
In the specific implementation, the top surface that the bottom surface of tuning cylinder 15 is fixedly welded on tuning disk 17 is specially the bottom for tuning cylinder 15
The top surface of tuning disk 17 is fixed in face soldering.
The utility model another embodiment provides for a kind of magnetron, include the magnetron tune that above-described embodiment provides
Humorous device.
In the description of the present invention, it should be noted that term the instructions such as " on ", " under " orientation or position relationship
To be based on orientation shown in the drawings or position relationship, being for only for ease of description the utility model and simplifying description, without referring to
Show or imply that the device of meaning or element there must be specific orientation, with specific azimuth configuration and operation, therefore cannot manage
It solves as the limitation to the utility model.Unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " should be done
It broadly understood, for example, it may be being fixedly connected or being detachably connected or be integrally connected；Can be mechanical connection,
It can also be electrical connection；It can be directly connected, can also be indirectly connected by intermediary, can be inside two elements
Connection.For the ordinary skill in the art, it can understand above-mentioned term in the utility model as the case may be
Concrete meaning.
It should be noted that relational terms such as first and second and the like are only in the description of the present invention,
Only it is used for distinguishing one entity or operation from another entity or operation, without necessarily requiring or implying these realities
There are any actual relationship or orders between body or operation.Moreover, term " comprising ", "comprising" or its it is any its
He is intended to non-exclusive inclusion by variant, so that process, method, article or equipment including a series of elements are not
Only include those elements, but also including other elements that are not explicitly listed or further include for this process, method,
Article or the intrinsic element of equipment.In the absence of more restrictions, it is wanted by what sentence "including a ..." limited
Element, it is not excluded that also there are other identical elements in the process, method, article or apparatus that includes the element.
Obviously, above-described embodiment of the utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to the embodiment of the utility model, for those of ordinary skill in the art, in above description
On the basis of can also make other variations or changes in different ways, all embodiments can not be exhaustive here, it is all
It is to belong to the guarantor of obvious changes or variations that the technical solution of the utility model extends out still in the utility model
Protect the row of range.
Claims (10)
1. a kind of magnetron tuner, which is characterized in that including turntable, worm gear, cyclic annular worm screw, tuning cylinder and tuning disk, institute
It states tuning cylinder and tuning disk and magnetron is axially coaxial, the shaft of the turntable and worm gear is axially set perpendicular to magnetron, institute
It states the outer wall of inner wall and the tuning cylinder that cyclic annular worm screw is coated at the tuning cylinder and the cyclic annular worm screw and is equipped with matched spiral shell
Line, the shaft of the ring-type worm screw are coaxially disposed with magnetron, and the rotation of the turntable drives the worm gear to rotate to link
Cyclic annular worm screw rotation is stated, the rotation of the ring-type worm screw drives the tuning cylinder and tuning disk along magnetron axial displacement, with logical
The tuning to magnetron is realized in the displacement for crossing the tuning disk along magnetron axial direction.
2. magnetron tuner according to claim 1, which is characterized in that the tuner further includes water cooling component,
The water cooling component includes：It is sheathed in the tuning cylinder and outer wall forms the cooling water of connected space with the tuning cylinder inner wall
Pipe, connected with the upper opening of the cooling water pipe enter water swivel and the water outlet connector connected with the connected space, it is described
The bottom opening of cooling water pipe higher than the tuning disk top surface, space in the pipe of the cooling water pipe, the cooling water pipe bottom
Portion is open is collectively formed cooling water water route to the space of the tuning disk top surface with the connected space.
3. magnetron tuner according to claim 2, which is characterized in that it is described enter water swivel and the water outlet connector
One of be located at the turntable above, it is described enter water swivel and the water outlet connector it is opposite disposed.
4. magnetron tuner according to claim 2, which is characterized in that magnetron tuner further comprises water
Cold component support piece, the cooling water pipe enter water swivel and water outlet connector respectively in connection with being fixed on the water cooling component support piece.
5. magnetron tuner according to claim 4, which is characterized in that the water cooling adjacent with the tuning cylinder
Component support piece side wall is circumferentially provided at least one slot, and sealing ring is arranged in the slot, so that the water cooling component support piece
With the tuning cylinder water-tight fits.
6. magnetron tuner according to claim 5, which is characterized in that the sealing ring is rubber seal.
7. magnetron tuner according to claim 1, which is characterized in that the magnetron tuner further comprises
Tuning block support element, the worm gear and cyclic annular worm screw are respectively by bearing with reference to being fixed on the tuning block support element.
8. magnetron tuner according to claim 1, which is characterized in that it is described tuning cylinder underrun soldering with
The top surface of the tuning disk is fixed.
9. magnetron tuner according to claim 1, which is characterized in that the tuning cylinder and the tuning disk one
It is process.
10. a kind of magnetron, which is characterized in that including magnetron tuner as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721915841.0U CN207602511U (en) | 2017-12-31 | 2017-12-31 | A kind of magnetron tuner and magnetron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721915841.0U CN207602511U (en) | 2017-12-31 | 2017-12-31 | A kind of magnetron tuner and magnetron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207602511U true CN207602511U (en) | 2018-07-10 |
Family
ID=62769039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721915841.0U Withdrawn - After Issue CN207602511U (en) | 2017-12-31 | 2017-12-31 | A kind of magnetron tuner and magnetron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207602511U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108231509A (en) * | 2017-12-31 | 2018-06-29 | 中国电子科技集团公司第十二研究所 | A kind of magnetron tuner and magnetron |
-
2017
- 2017-12-31 CN CN201721915841.0U patent/CN207602511U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108231509A (en) * | 2017-12-31 | 2018-06-29 | 中国电子科技集团公司第十二研究所 | A kind of magnetron tuner and magnetron |
| CN108231509B (en) * | 2017-12-31 | 2024-03-22 | 中国电子科技集团公司第十二研究所 | Magnetron tuning device and magnetron |
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