CN205582877U - Relativistic magnetron's mixed excitation system is drawed in full chamber - Google Patents
Relativistic magnetron's mixed excitation system is drawed in full chamber Download PDFInfo
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- CN205582877U CN205582877U CN201620184964.0U CN201620184964U CN205582877U CN 205582877 U CN205582877 U CN 205582877U CN 201620184964 U CN201620184964 U CN 201620184964U CN 205582877 U CN205582877 U CN 205582877U
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Abstract
The utility model discloses a relativistic magnetron's mixed excitation system is drawed in full chamber, including positive pole urceolus and the negative pole of setting in the positive pole urceolus, anode and cathode urceolus coaxial line sets up, be provided with the anode block between the anode and cathode urceolus, it is regional for restrainting ripples interaction usefulness between negative pole and the anode block, positive pole urceolus surface cover has solenoid the setting is in the positive pole urceolus and the permanent magnet between the negative pole, the utility model discloses in, permanent magnet inlays inside the magnetron, make full use of the inner space of magnetron. Embedded permanent magnet has improved the magnetic field of field coil tip effectively, through using mixing of embedded permanent magnet and field coil, has realized the magnetic field evenly distributed of interaction with the region, and it is lower to make whole full chamber draw relativistic magnetron mixed excitation system power dissipation simultaneously.
Description
Technical field
The invention belongs to High-Power Microwave technical field, be specifically related to a kind of full chamber and extract the composite excitation system of relativistic magnetron.
Background technology
High-Power Microwave has been along with plasma technique since 20 century 70s, progress and the development of computer particle simulation software of Pulse Power Techniques and a research field developing rapidly, high-power microwave source is one of critical component in High Power Microwave System, relativistic magnetron (RM) represents as a kind of typical high-power microwave source, owing to having simple in construction, operation magnetic field is low, possesses the ability of high power and repetition pulse work, also possess multitube phase-locked work synthesis simultaneously and export more powerful potential, thus it is the most in widespread attention.In order to improve the service behaviour of relativistic magnetron, its architectural feature is conducted extensive research by researcher, Greenwood and Hoff et al. proposes full chamber and extracts axial export structure, magnetron adjacent resonators coupling aperture is connected with a fan-shaped output waveguide by this structure with the form symmetrical along centrage, when magnetron is operated in π mould, excitation is played TE by fan-shaped output waveguide11Mould.Compared with conventional radial output magnetron, this structure has the feature of symmetrical output, less on the impact of magnetron duty.Owing to output microwave axially transmits along fan-shaped waveguide, device radial dimension is less, beneficially the magnet design of magnetron realize miniaturization.
Overwhelming majority high-power microwave source interacts mainly by relativistic electron beam and microwave cavity and produces High-Power Microwave output, in general its job demand externally-applied magnetic field constraint electron beam transmission.Existing externally-applied magnetic field mode utilizes magnetic field line bag or permanent magnet etc. to realize excitation, and different excitation modes has different features.Magnetic field line bag is actually used relatively broad a kind of excitation mode, it is ripe that this has manufacturing technology mainly due to it, with low cost, the advantages such as the uniform magnetic field that large-size can be provided, but it also has some self shortcoming, its energy consumption is higher, and high-octane power supply can increase the volume and weight of system, and this is unfavorable for the miniaturization of high-power microwave source.Permanent magnet has not consumed energy, can provide stable magnetic field, high reliability, but permanent magnet cost is higher, and additionally the magnetic field of permanent magnet is to be determined by self magnet structure and magnetic circuit magnetic conductance, and after design molding, its excitation is limited in scope, and is difficult to regulation.
Summary of the invention
The technical problem to be solved in the present invention
In order to make up the shortcoming of field coil, extracting the architectural feature of relativistic magnetron in conjunction with full chamber, it is proposed that the mode of composite excitation, place permanent magnets in the inside of relativistic magnetron, the field coil for accessory external carries out excitation.This set composite excitation system has the advantage that volume is little, lightweight, energy consumption is low, can meet the demand of multiple Mobile solution platform.
Realization the technical scheme is that
The composite excitation system of relativistic magnetron is extracted in a kind of full chamber, including anode urceolus and the negative electrode being arranged in anode urceolus, negative electrode is coaxially set with anode urceolus, it is provided with anode block between described negative electrode and anode urceolus, for bundle ripple interaction region between negative electrode and anode block, the outer tube outer surface of described anode is cased with solenoid；Including the permanent magnet in being arranged on anode urceolus and between negative electrode.
In technique scheme, described anode block is set to six pieces, is distributed along same even circumferential.
In technique scheme, described anode block profile is consistent, is formed and extract chamber between each two anode block.
In technique scheme, described permanent magnet is ring-shaped, and permanent magnet is coaxially set with negative electrode.
In technique scheme, including two block sizes, permanent magnet that shape is identical.
In technique scheme, anode block is arranged between two pieces of permanent magnets.
In technique scheme, described solenoid axially arranges center and bundle ripple interaction region center superposition.
In technique scheme, two pieces of axially arranged centers of permanent magnet and bundle ripple interaction region center superposition.
Compared with prior art, it is an advantage of the current invention that:
In the present invention, permanent magnetic iron is embedded in inside magnetron, takes full advantage of the inner space of magnetron.Embedded permanent magnetic iron is effectively improved the magnetic field of field coil end, by being used in mixed way of embedded permanent magnetic iron and field coil, achieve the field homogeneity distribution in interaction region, make whole full chamber extract relativistic magnetron composite excitation system power dissipation relatively low simultaneously；
This composite excitation mode takes full advantage of full chamber and extracts the architectural feature of relativistic magnetron and the advantage of permanent magnet, using the teaching of the invention it is possible to provide relativistic magnetron normally works required uniform magnetic field.Designed composite excitation system structure is the compactest, lightweight, makes and use and maintenance cost is relatively low, is very beneficial for Mobile solution platform and uses.
Accompanying drawing explanation
The invention will be further described below in conjunction with the accompanying drawings；
Fig. 1 is the structural representation of embodiments of the invention 1；
Wherein: 1 is anode urceolus；2 is bundle ripple interaction region；3,4 it is embedded into permanent magnet block；5 is field coil；6 is permanent magnet.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As it is shown in figure 1, relativistic magnetron is extracted in the full chamber of the present invention is extracted structure and export structure composition by anode urceolus, the anode block that six sizes are identical, negative electrode, full chamber.Negative electrode is positioned at inside anode canister, with anode canister concentric.Six anode blocks are between anode canister and negative electrode, and uniform ring is wound on cathode external, angularly define six resonator cavitys between six anode blocks.For bundle ripple interaction region between negative electrode and anode block.Full chamber is extracted structure and is used the mode that Radial Coupling hole combines with fan-shaped waveguide.Microwave is through fan-shaped waveguide, then is synthesized further by coaxial waveguide, after through end conical transition, circular waveguide port export.
Field coil is placed on outside relativistic magnetron urceolus, axially placed center and bundle ripple interaction region center superposition.
Embedded permanent magnetic iron is the coaxial type magnetic piece of two pieces of formed objects, its small volume, it is positioned at the inside of relativistic magnetron, its external diameter is equal to the anode block external diameter of relativistic magnetron, keep coaxial with relativistic magnetron, two pieces of embedded axially placed centers of little magnetic piece also with restraint ripple interaction region center superposition.
Field coil and embedded permanent magnetic iron are jointly for the axial uniform magnetic field of bundle ripple interaction region offer of relativistic magnetron.
Specific embodiment is as follows:
Field coil is placed on anode urceolus, and coil inside radius is 105mm, and outer radius is 155mm, axially placed center and bundle ripple interaction region center superposition, axial length is 80mm, uses the copper wire winding of 2mm × 3mm, electric current logical on wire is 80A, uses the type of cooling of water-cooled.
Two little magnetic piece of embedded permanent magnetic iron are positioned at the inside of relativistic magnetron, keep coaxial with relativistic magnetron, two pieces of embedded axially placed centers of little magnetic piece also with restraint ripple interaction region center superposition.Little magnetic piece external diameter is 60mm, and internal diameter is 30 mm, and the axial length of each piece is 100 mm, two pieces of little magnetic piece be spaced apart 250 mm, the direction of magnetization all uses axial direction.Two coaxial little magnetic piece all use the hard magnetic material with higher residual magnetic flux density, and residual magnetic flux density is 1.33T.
Using said structure size, simulation to obtain field coil and embedded permanent magnet block axis magnetic field in interaction region, this Distribution of Magnetic Field is more uniform, fully meets full chamber under this size and extracts relativistic magnetron and normally work and produce the magnetic field needed for microwave.In this set composite excitation system, field coil weight is about 11.5 Kg, and power consumption is about 10KW, and embedded permanent magnetic iron gross weight is about 13.5Kg.And directly using field coil to provide above-mentioned magnetic field, coil weight is about 67Kg, and power consumption is about 44KW.As can be seen here, using the composite excitation mode in the present embodiment, surpass 60% than using traditional field coil weight to decline, coil power dissipation decline surpasses 70%.Owing to this composite excitation mode makes component compact, therefore this invention can be used for requiring device miniaturization in higher Mobile solution platform.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, should be included within the scope of the present invention.
Claims (8)
1. the composite excitation system of a full chamber extraction relativistic magnetron, including anode urceolus and the negative electrode being arranged in anode urceolus, negative electrode is coaxially set with anode urceolus, it is provided with anode block between described negative electrode and anode urceolus, for bundle ripple interaction region between negative electrode and anode block, the outer tube outer surface of described anode is cased with solenoid；Permanent magnet in it is characterized in that including being arranged on anode urceolus and between negative electrode.
The composite excitation system of relativistic magnetron is extracted in a kind of full chamber the most according to claim 1, it is characterised in that described anode block is set to six pieces, is distributed along same even circumferential.
The composite excitation system of relativistic magnetron is extracted in a kind of full chamber the most according to claim 2, it is characterised in that described anode block profile is consistent, is formed and extract chamber between each two anode block.
The composite excitation system of relativistic magnetron is extracted in a kind of full chamber the most according to claim 1, it is characterised in that described permanent magnet is ring-shaped, and permanent magnet is coaxially set with negative electrode.
The composite excitation system of relativistic magnetron is extracted in a kind of full chamber the most according to claim 4, it is characterised in that include the permanent magnet that two block sizes, shape are identical.
6. extract the composite excitation system of relativistic magnetron according to a kind of full chamber described in claim 3 or 5, it is characterised in that anode block is arranged between two pieces of permanent magnets.
The composite excitation system of relativistic magnetron is extracted in a kind of full chamber the most according to claim 1, it is characterised in that described solenoid axially arranges center and bundle ripple interaction region center superposition.
8. extract the composite excitation system of relativistic magnetron according to a kind of full chamber described in claim 5 or 7, it is characterised in that two pieces of axially arranged centers of permanent magnet and bundle ripple interaction region center superposition.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590819A (en) * | 2016-03-11 | 2016-05-18 | 中国工程物理研究院应用电子学研究所 | Mixed excitation system of full-chamber extraction relativistic magnetron |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105590819A (en) * | 2016-03-11 | 2016-05-18 | 中国工程物理研究院应用电子学研究所 | Mixed excitation system of full-chamber extraction relativistic magnetron |
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