CN204792676U - Magnetic package adorns relativistic magnetron forever - Google Patents
Magnetic package adorns relativistic magnetron forever Download PDFInfo
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- CN204792676U CN204792676U CN201520518104.1U CN201520518104U CN204792676U CN 204792676 U CN204792676 U CN 204792676U CN 201520518104 U CN201520518104 U CN 201520518104U CN 204792676 U CN204792676 U CN 204792676U
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Abstract
The utility model discloses a magnetic package adorns relativistic magnetron forever, the magnetron extracts the axial output structure for full chamber, extracts the structure by negative pole, positive pole urceolus and axial to form, including the annular permanent magnet of a plurality of, partly permanent magnet overlaps on the positive pole urceolus, and on the negative pole of another part permanent magnet cover in the positive pole urceolus, the permanent magnet sets up with the axle center with the magnetron. The utility model discloses a way that permanent magnetism magnet adopted embedded and outside loading to combine together has increased the permanent magnet and has evenly distinguished the size, and partial permanent magnetism magnet inlays inside the magnetron, make full use of the inner space of magnetron for whole magnetic package forever dress structure is comparatively compact. Magnetic package dress structure can be long -time stable forever for relativistic magnetron provides required homogeneous magnetic field, makes the high power microwave output of its work production gigawatt level. This kind of magnetic package adorns relativistic magnetron forever can be applied to among the high power microwave system of compact structure or repetition rate operation well.
Description
Technical field
The utility model belongs to High-Power Microwave technical field, and be specifically related to a kind of permanent magnetism packaging relativistic magnetron, the utility model can be applied to the microwave generating system of High-Power Microwave technical field.
Background technology
Since the seventies in last century, along with the progress of plasma technique, Pulse Power Techniques and the development of computer particle simulation software, High-Power Microwave technology develops by leaps and bounds, especially in the development of high-power microwave source, achieve great progress, successively occur wide variety of different types of high-power microwave source.Wherein the operation principle of most high-power microwave source is all utilize relativistic electron beam and microwave cavity to interact to produce High-Power Microwave to export, and in general needs externally-applied magnetic field to retrain electron beam transmission.Common magnetic field implementation is solenoidal field, and huge power-supply system substantially increases the volume and weight of whole system, and consumes a large amount of energy, reduces the total energy efficiency of high-power microwave source.In addition, when repetition pulse work, electromagnetic system also needs cooling and protective device, further increases the complexity of system, thus significantly limit its range of application.
Relative to electromagnetic system, permanent magnet system has that volume is little, lightweight, not consumed energy and can provide the advantages such as stable magnetic field, therefore one of Development Permanent Magnet packing technique important means that to be high-power microwave source practical.In permanent magnetism packaging high-power microwave source, permanent magnet scale is decided by excitation bulk and magnetic field intensity two factors.Therefore, in order to realize the permanent magnetism packaging of high-power microwave source, need the size of reduction microwave source as far as possible and reduce it to run magnetic field.
Relativistic magnetron (RM) is one of the most effective high-power microwave source.Because its structure is simple, run the ability that magnetic field is low, possess high power and repetition pulse work, also possess multitube phase-locked work synthesis simultaneously and export more powerful potential, thus in widespread attention in the world.As far as possible current research emphasis improves the efficiency of relativistic magnetron, and the volume and weight of reduction system is to adapt to multiple miniaturized application demand.Around this demand, scholars has carried out large quantity research, and wherein transparent cathode and diffraction export structure are that relativistic magnetron raises the efficiency aspect two kinds of means the most widely.Use particle simulation software, the Mikhail.I.Fuks group of University of New Mexico of the U.S. has carried out the diffraction output relativistic magnetron design of band transparent cathode, and design result is in 2.45GHz frequency, and power output reaches 1.4GW, and efficiency reaches 70%.Slightly inadequate, in size, it is comparatively large that diffraction exports magnetron gradual change delivery outlet size, increases the difficulty of magnet Miniaturization Design.
Another the representative work of relativistic magnetron Miniaturization Research aspect is that axial export structure is extracted in the full chamber of one that the people such as Greenwood and Hoff propose, magnetron adjacent resonators coupling aperture is connected with a fan-shaped output waveguide with the form of centrally line symmetry by this structure, when magnetron is operated in π mould, in fan-shaped output waveguide, excitation is played TE
11mould.Compared with exporting magnetron with conventional radial, this structure has the symmetrical feature exported, less on the impact of magnetron operating state.Owing to exporting microwave along fan-shaped waveguide axially transmission, device radial dimension is less, is conducive to the magnet design of magnetron and realizes miniaturization.
Utility model content
The purpose of this utility model is to realize the design of small light high-power microwave source, to meet multiple Mobile solution platform requirement, the utility model discloses a kind of permanent magnetism packaging relativistic magnetron structure extracting axial export technique based on full chamber.This structure has the advantages that microwave starting of oscillation speed is fast, power output is high and system configuration is simple, compact.
The utility model adopts following technical scheme for achieving the above object:
A kind of permanent magnetism packaging relativistic magnetron, described magnetron is that axial export structure is extracted in full chamber, is made up of negative electrode, anode urceolus and axial structure of extracting; Comprise the permanent magnet of several ring-types, a part of permanent magnet is enclosed within anode urceolus, and another part permanent magnet is enclosed within the negative electrode in anode urceolus, and permanent magnet and magnetron concentric are arranged.
In technique scheme, the internal diameter being enclosed within the permanent magnet on anode urceolus equals the external diameter of anode urceolus, and the size shape of each permanent magnet is consistent.
In technique scheme, the axial location being enclosed within the permanent magnet on anode urceolus is the mutual effect regional center of relativistic magnetron.
In technique scheme, the external diameter being enclosed within the permanent magnet on the negative electrode in anode urceolus equals the internal diameter of anode urceolus, and the internal diameter of permanent magnet is greater than the external diameter of negative electrode, and the size shape of each permanent magnet is consistent.
In technique scheme, be enclosed within the permanent magnet axial location center on the negative electrode in anode urceolus and relativistic magnetron mutual effect region center superposition.
In technique scheme, the permanent magnet be enclosed within anode urceolus is consistent with the quantity of the permanent magnet be enclosed within negative electrode, and the permanent magnet position one_to_one corresponding inside and outside anode urceolus.
In technique scheme, the permanent magnet inside and outside anode urceolus is overlapping perpendicular to magnetron axis direction upper part.
In technique scheme, the negative electrode of described magnetron is the transparent cathode of three Metallic rod compositions, anode is with six resonant cavitys, extracting structure adopts six Radial Coupling holes to combine with three fan-shaped waveguides, three fan-shaped waveguides are angularly evenly distributed on the outside of six resonant cavitys, and six coupling apertures lay respectively on the common wall of the fan-shaped waveguide that six resonant cavitys are adjacent.
The operation principle of permanent magnetism packaging relativistic magnetron of the present utility model is: the radial electric field formed after adding high electric field pulse between anode and cathode, orthogonal with the axial magnetic field that outside and embedded permanent magnetic iron is formed, angularly drifted about under this crossed electric and magnetic field effect by the electronics of cathode emission, form electronics spoke; When electronics spoke the rotation of interaction space and the phase velocity of radio-frequency field synchronous time, there is transducing between electronics and radio-frequency field, produce High-Power Microwave; High-Power Microwave is by the coupling aperture on resonant cavity and fan-shaped waveguide common wall, a fan-shaped waveguide is entered with the form of the centrally holes coupling of line symmetry respectively by two adjacent resonant cavities, because in adjacent resonant cavity, microwave phase differs 180 °, therefore pass through position and the shape size of appropriate design coupling aperture, microwave in two adjacent resonant cavitys is via the coupling aperture on respective wall, to encourage class TE10 mould in fan-shaped waveguide, now microwave is transferred out by fan-shaped waveguide.Three fan-shaped waveguides are synthesized further by coaxial waveguide, finally by end conical transition, are finally exported by circular waveguide port.
In sum, owing to have employed technique scheme, the beneficial effects of the utility model are: permanent magnetic iron of the present utility model adopts the embedded way combined with external load, increase permanent magnet homogeneity range size, part permanent magnetic iron is embedded in magnetron inside, take full advantage of the inner space of magnetron, make whole permanent magnetism packaging structure comparatively compact.This permanent magnetism packaging structure energy long-time stable provide required uniform magnetic field for relativistic magnetron, the High-Power Microwave making its work produce GW exports.This kind of permanent magnetism packaging relativistic magnetron can be advantageously applied among the High Power Microwave System of compact conformation or repetitive operation.
Accompanying drawing explanation
The utility model illustrates by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is the structural representation of embodiment 1 of the present utility model;
Fig. 2 is embedded permanent magnetic iron one and outside permanent magnetic iron two structural representation in Fig. 1;
Fig. 3 is relativistic magnetron schematic diagram in Fig. 1;
Fig. 4 is the schematic cross-section of magnetron in Fig. 3;
Fig. 5 is the Distribution of Magnetic Field figure of permanent magnetic iron in Fig. 1;
Fig. 6 is permanent magnetism packaging relativistic magnetron Output rusults figure;
In figure, I. embedded permanent magnetic iron II. outside permanent magnetic iron III. relativistic magnetron.
Embodiment
Permanent magnetism packaging relativistic magnetron of the present utility model, is made up of outside permanent magnetic iron, embedded permanent magnetic iron and relativistic magnetron.Its peripheral permanent magnetic iron and embedded permanent magnetic iron adopt has high residual magnetic flux density and high coercitive hard magnetic material.
Outside permanent magnetic iron is the coaxial configuration type magnetic patch that two block sizes are identical, be surrounded on the outside of relativistic magnetron, its internal diameter equals the external diameter of relativistic magnetron, keeps coaxial with relativistic magnetron, and the axial location of outside permanent magnetic iron is the mutual effect regional center of relativistic magnetron.
Embedded permanent magnetic iron is similarly the coaxial configuration magnetic patch of two pieces of formed objects, its small volume, be positioned at the inside of relativistic magnetron, its external diameter equals the anode external diameter of relativistic magnetron, internal diameter is then greater than the negative electrode external diameter of relativistic magnetron, also keep coaxial with relativistic magnetron, two pieces of axial placement centers of embedded little magnetic patch also with relativistic magnetron mutual effect region center superposition, two magnetic patch of axial location and outside permanent magnetic iron overlap.
Outside permanent magnetic iron defines uniform magnetic field vertically in the sub-fraction region of mutual effect immediate vicinity.Embedded permanent magnetic iron is positioned at magnetron inside, and embedded permanent magnetic iron can make full use of the space of magnetron inside, under the prerequisite not reducing the axial magnetic field size that outside permanent magnetic iron is formed, is extended vertically uniform magnetic field region.
Fig. 1 is the structural representation of permanent magnetism of the present utility model packaging relativistic magnetron, Fig. 2 is embedded and outside permanent magnetic iron schematic diagram in Fig. 1 structure, Fig. 3, Fig. 4 are relative magnetron schematic diagrames in Fig. 1 structure, and Fig. 5 is the Distribution of Magnetic Field figure that Fig. 2 permanent magnet structure is formed.Permanent magnetism packaging relativistic magnetron in the utility model comprises embedded permanent magnetic iron, outside permanent magnetic iron II and relativistic magnetron III.
In the present embodiment, permanent magnetic iron as shown in Figure 2, two fritter magnetic patch of embedded permanent magnetic iron I, external diameter is 120mm, internal diameter is 66mm, every block thickness is 80mm, and it is spaced apart 150mm, and every block weight is 5Kg, embedded permanent magnetic iron total weight is 10Kg, and the residual magnetic flux density of two little magnetic patch is 1.1T; Two pieces of magnetic patch of outside permanent magnetic iron II, external diameter is 310mm, and internal diameter is 210mm, and every block thickness is 107mm, and it is spaced apart 30mm, and every block weight is 35.3Kg, and outside permanent magnetic iron total weight is 70.6Kg, and the residual magnetic flux density of two magnetic patch is 1.3T.The Distribution of Magnetic Field figure of whole permanent magnet structure as shown in Figure 5, embedded permanent magnetic iron is under the prerequisite not reducing the axial magnetic field size that outside permanent magnetic iron is formed, uniform magnetic field region is expanded to 154mm vertically, and the residual magnetic flux density of whole homogeneity range is 0.37T.
Relativistic magnetron III in the present embodiment as shown in Figure 3, Figure 4, comprises transparent cathode (1,2,3), anode 4, resonant cavity 5 coupling aperture 6, fan-shaped waveguide 7, coaxial waveguide 8, circular cone 9, urceolus 10.Transparent cathode is made up of three parts, is respectively negative electrode foundation 1, end cap 2, and the metal column 3 of three formed objects, and negative electrode foundation is the cylinder of radius 15.8mm, long 125mm; Negative electrode end cap is two radius 23.8mm, the cylinder of thick 10mm; Three metal column cross sections are all inside radius 10.8mm, outer radius 15.8mm, angle 20 ° fan-shaped, and metal column length is 160mm.Anode 4 radius is 33.3mm, and anode axial length is 80mm, and resonant cavity number is 6, and resonant cavity inside radius is 33.3mm, and outer radius is 60mm, and resonant cavity subtended angle is 20 °, and axial length is 80mm.Coupling aperture lays respectively at the outer wall middle of six resonant cavitys, and on the common wall that resonant cavity is connected with fan-shaped waveguide, totally six, coupling aperture inside radius is 60mm, and outer radius is 70mm, and subtended angle is 15 °, and axial length is 52mm.Three fan-shaped output waveguide inside radius are 70mm, and outer radius is 95mm, and subtended angle is 90 °, and fan-shaped waveguide axial length is 118mm.The latter end coaxial waveguide inside radius be connected with fan-shaped waveguide is 70mm, and outer radius is 95mm, and axial length is 150mm, and end circular cone bottom radius is 70mm, and tip radius is 30mm, and circular cone height is 120mm.
Utilize particle simulation software to calculate the permanent magnetism packaging relativistic magnetron under said structure size, as shown in Figure 6, obtain under feed voltage is the condition of 623kV, input current 6.27kA, in the frequency of 1.58GHz, delivery efficiency is 39.6%.Compared with this kind of relativistic magnetron under the same structure size loaded with solenoid calculates, the two delivery efficiency is suitable.Because this permanent magnetism packaging is by overall device compact conformation, therefore this utility model can be used for requiring among strict High Power Microwave System device miniaturization.
The utility model is not limited to aforesaid embodiment.The utility model expands to any new feature of disclosing in this manual or any combination newly, and the step of the arbitrary new method disclosed or process or any combination newly.
Claims (8)
1. a permanent magnetism packaging relativistic magnetron, described magnetron is that axial export structure is extracted in full chamber, is made up of negative electrode, anode urceolus and axial structure of extracting; It is characterized in that the permanent magnet comprising several ring-types, a part of permanent magnet is enclosed within anode urceolus, and another part permanent magnet is enclosed within the negative electrode in anode urceolus, and permanent magnet and magnetron concentric are arranged.
2. a kind of permanent magnetism packaging relativistic magnetron according to claim 1, it is characterized in that the internal diameter of the permanent magnet be enclosed within anode urceolus equals the external diameter of anode urceolus, and the size shape of each permanent magnet is consistent.
3. a kind of permanent magnetism packaging relativistic magnetron according to claim 2, is characterized in that the axial location of the permanent magnet be enclosed within anode urceolus is the mutual effect regional center of relativistic magnetron.
4. a kind of permanent magnetism packaging relativistic magnetron according to claim 1, it is characterized in that the external diameter of the permanent magnet be enclosed within the negative electrode in anode urceolus equals the internal diameter of anode urceolus, the internal diameter of permanent magnet is greater than the external diameter of negative electrode, and the size shape of each permanent magnet is consistent.
5. a kind of permanent magnetism packaging relativistic magnetron according to claim 4, is characterized in that being enclosed within the permanent magnet axial location center on the negative electrode in anode urceolus and relativistic magnetron mutual effect region center superposition.
6. a kind of permanent magnetism packaging relativistic magnetron according to claim 1, is characterized in that the permanent magnet be enclosed within anode urceolus is consistent with the quantity of the permanent magnet be enclosed within negative electrode, and the permanent magnet position one_to_one corresponding inside and outside anode urceolus.
7. a kind of permanent magnetism packaging relativistic magnetron according to claim 6, is characterized in that permanent magnet inside and outside anode urceolus is overlapping perpendicular to magnetron axis direction upper part.
8. a kind of permanent magnetism packaging relativistic magnetron according to claim 1, it is characterized in that the negative electrode of described magnetron is the transparent cathode of three Metallic rod compositions, anode is with six resonant cavitys, extracting structure adopts six Radial Coupling holes to combine with three fan-shaped waveguides, three fan-shaped waveguides are angularly evenly distributed on the outside of six resonant cavitys, and six coupling apertures lay respectively on the common wall of the fan-shaped waveguide that six resonant cavitys are adjacent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992892A (en) * | 2015-07-17 | 2015-10-21 | 中国工程物理研究院应用电子学研究所 | Permanent-magnet packaging relativistic magnetron |
| CN112885681A (en) * | 2021-01-28 | 2021-06-01 | 电子科技大学 | Relativistic magnetron with double-end emission cathode structure |
-
2015
- 2015-07-17 CN CN201520518104.1U patent/CN204792676U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992892A (en) * | 2015-07-17 | 2015-10-21 | 中国工程物理研究院应用电子学研究所 | Permanent-magnet packaging relativistic magnetron |
| CN112885681A (en) * | 2021-01-28 | 2021-06-01 | 电子科技大学 | Relativistic magnetron with double-end emission cathode structure |
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