CN114999874B - High repetition frequency pulse magnetic field device for relativistic klystron amplifier - Google Patents
High repetition frequency pulse magnetic field device for relativistic klystron amplifier Download PDFInfo
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- CN114999874B CN114999874B CN202210655412.3A CN202210655412A CN114999874B CN 114999874 B CN114999874 B CN 114999874B CN 202210655412 A CN202210655412 A CN 202210655412A CN 114999874 B CN114999874 B CN 114999874B
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- 238000007789 sealing Methods 0.000 claims description 25
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/02—Tubes with electron stream modulated in velocity or density in a modulator zone and thereafter giving up energy in an inducing zone, the zones being associated with one or more resonators
- H01J25/10—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator
- H01J25/20—Klystrons, i.e. tubes having two or more resonators, without reflection of the electron stream, and in which the stream is modulated mainly by velocity in the zone of the input resonator having special arrangements in the space between resonators, e.g. resistive-wall amplifier tube, space-charge amplifier tube, velocity-jump tube
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/12—Vessels; Containers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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Abstract
The invention discloses a high-repetition frequency pulse magnetic field device for a relativity klystron amplifier, which comprises an outer cylinder, an inner cylinder and two groups of coil assemblies, wherein the inner cylinder is coaxially nested in the outer cylinder, the two groups of coil assemblies are symmetrically arranged at two ends of the inner cylinder, the coil assemblies comprise a plurality of coils connected in series, two groups of wiring post assemblies are arranged on the outer cylinder, and the two groups of coil assemblies are correspondingly connected with the two groups of wiring post assemblies one by one so that the two groups of coil assemblies are in a parallel structure. The invention adopts the structure of the double-coil LCR parallel loop, can obviously reduce the inductance L and the resistance R of the magnetic field coil, further improves the repeated working frequency of the pulse magnetic field, and ensures that HPM devices such as RKA and the like can work in a high repeated frequency state.
Description
Technical Field
The invention belongs to the technical field of high-power microwave devices, and particularly discloses a high-repetition frequency pulse magnetic field device for a relativistic klystron amplifier.
Background
High power microwaves (High Power Microwave, abbreviated to HPM) generally refer to electromagnetic waves having peak powers greater than 100MW and frequencies between 0.1GHz and 100 GHz. HPM technology is a crossing discipline that arose in the 70 s of the 20 th century, and is the product of the collection of traditional electric vacuum devices and pulsed power technologies. In the last twenty years, the HPM technology has shown good application prospect in the military and civil fields and has been developed rapidly under the traction of applications such as high-energy radio frequency accelerators, directional energy weapons and high-power radars.
The HPM device is a device which converts electron beam kinetic energy into microwave energy by utilizing a mechanism of interaction of electron beams with an eigenmode thereof in a vacuum high-frequency electromagnetic structure. High frequency and high peak power are continuously pursued targets in the technical field of HPM, but due to the restriction of physical mechanisms, device process structures, material performances and other factors generated by HPM, when the HPM is further advanced to higher frequency and higher peak power, the HPM device has physical barriers such as strong electric field breakdown, output microwave pulse shortening and the like, and the further improvement of the peak power of the single-tube HPM device is restricted. In order to meet the actual application demands, power synthesis of output microwaves of a plurality of HPM devices becomes an important point and main direction of future HPM technology development. Among the various ways of power synthesis, spatially coherent power synthesis has a more attractive prospect because it can achieve a peak power density of N 2 times (N is the number of microwave generating devices) in the far field.
In order to realize high-efficiency spatial coherence power synthesis, HPM devices involved in the synthesis are required to have good frequency and phase locking characteristics, so that the output microwave frequency can be precisely controlled, and meanwhile, phase locking among a plurality of HPM generating devices is realized. The relativity klystron amplifier (RELATIVISTIC KLYSTRON AMPLIFIER, abbreviated as RKA) is used as a microwave amplifying device, has the advantages of stable frequency, controllable phase and the like, and is one of ideal devices for spatial coherent power synthesis. The triaxial relativity klystron amplifier (Triaxial Klystron Amplifier, TKA for short) is an expansion of RKA to a high frequency band, and by introducing an inner conductor, the difference between the radius of the inner conductor and the radius of the outer conductor is reasonably controlled, so that the transverse working mode of the device can be effectively cut off, the device can have a larger radial size, the improvement of space limiting current is facilitated, and the output power is further improved. In addition, the introduction of the inner conductor reduces potential energy of the electron beam, the electron beam can be transmitted more stably, and the requirement of current with the same magnitude on the strength of the guiding magnetic field is reduced. Considering further practical development of HPM technology, in addition to continuously improving output power and working efficiency, it is also required to improve the repetition frequency, which not only creates new requirements for the cathode generating the electron beam, but also presents higher challenges for guiding the rf pulsed magnetic field of electron beam transmission.
Due to the specific working mechanism of TKA, the modulation and the bunching process of the electron beam under the restraint of the pulse magnetic field are respectively carried out in the resonant cavity and the drift tube, which also results in the longer axial length of TKA, the larger axial size of the pulse magnetic field arranged outside the TKA, and the larger inductance L and resistance R of the magnetic field coil. According to the repetition frequency definition of LCR loop: It is known that the design difficulty of the pulsed magnetic field required for TKA will be greatly increased when operating at high repetition frequencies (magnetic field charge-discharge frequency 20 Hz).
At present, the pulse magnetic field used by TKA is mostly single-coil LCR loop, the magnetic field coils used by other HPM devices are mostly single-coil LCR loop, and the single-coil LCR loop has larger inductance L and resistance R for TKA devices with larger volume, has lower repetition working frequency and is difficult to meet the required high repetition frequency requirement.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-repetition frequency pulse magnetic field device for a relativistic klystron amplifier, which is favorable for remarkably reducing the inductance L and the resistance R of a magnetic field coil and further improving the repetition frequency of a pulse magnetic field.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides a high repetition frequency pulse magnetic field device for relativistic klystron amplifier, includes urceolus, inner tube and two sets of coil assembly, the inner tube coaxial nest in the urceolus, two sets of coil assembly symmetry arrange in the both ends of inner tube, the coil assembly includes a plurality of coils of establishing ties, be equipped with two sets of terminal assemblies on the urceolus, two sets of coil assembly and two sets of terminal assembly one-to-one connection makes two sets of coil assemblies present parallel structure.
As a further improvement of the above technical scheme: the coils comprise a first coil, a second coil, a third coil and a fourth coil which are sequentially arranged from the middle part of the inner cylinder to the end part of the inner cylinder, the number of turns and the number of layers of coils forming the first coil, the second coil, the third coil and the fourth coil are different, and the outer diameters of the first coil, the second coil, the third coil and the fourth coil are gradually increased.
As a further improvement of the above technical scheme: the coil is wound by adopting enameled flat wires.
As a further improvement of the above technical scheme: and an epoxy glass cloth filling layer is arranged in a gap between the coil and the inner cylinder.
As a further improvement of the above technical scheme: the wiring terminal assembly is arranged on the lower side of the outer barrel.
As a further improvement of the above technical scheme: the end part of the outer cylinder is fixedly connected with the end part of the inner cylinder through a sealing plate, the sealing plates at two ends, the outer cylinder and the inner cylinder are matched to form a closed cavity, and the outer cylinder is provided with an oil inlet nozzle and an oil outlet nozzle which are communicated with the closed cavity.
As a further improvement of the above technical scheme: the oil inlet nozzle is arranged on the upper side of the outer cylinder, and the oil outlet nozzle is arranged on the lower side of the outer cylinder.
As a further improvement of the above technical scheme: the sealing plate is detachably connected with the outer cylinder and the inner cylinder.
As a further improvement of the above technical scheme: and the end surface or the circumferential surface of the sealing plate is provided with a mounting part.
As a further improvement of the above technical scheme: the outer cylinder, the inner cylinder and the sealing plate are made of metal materials, and the magnetic permeability is less than or equal to 1.1.
Compared with the prior art, the invention has the advantages that: the high-repetition frequency pulse magnetic field device for the relativistic klystron amplifier adopts a double-coil LCR parallel loop structure, can obviously reduce the inductance L and the resistance R of a magnetic field coil, further improves the repetition frequency of a pulse magnetic field, and enables HPM devices such as RKA and the like to work in a high repetition frequency state.
Drawings
Fig. 1 is a schematic diagram of a cross-sectional structure of a high-repetition frequency pulsed magnetic field device for a relativistic klystron amplifier of the present invention.
Fig. 2 is a schematic diagram of the front view of the high frequency pulsed magnetic field apparatus of the present invention for use in relativistic klystron amplifiers.
Fig. 3 is a schematic diagram showing the structure of the high-repetition frequency pulse magnetic field device for relativity klystron amplifier according to the present invention.
Fig. 4 is a schematic diagram of the left-hand construction of a high-repetition frequency pulsed magnetic field device for a relativistic klystron amplifier according to the invention.
The reference numerals in the drawings denote: 1. an outer cylinder; 2. an inner cylinder; 3. a coil assembly; 30. a coil; 31. a first coil; 32. a second coil; 33. a third coil; 34. a fourth coil; 4. a terminal assembly; 5. a sealing plate; 51. a mounting part; 6. closing the cavity; 71. an oil inlet nozzle; 72. and an oil outlet nozzle.
Detailed Description
The invention is described in further detail below with reference to the drawings and specific examples of the specification.
Fig. 1 to 4 show an embodiment of a high-repetition frequency pulse magnetic field device for a relativistic klystron amplifier according to the present invention, which includes an outer cylinder 1, an inner cylinder 2 and two sets of coil assemblies 3, wherein the inner cylinder 2 is coaxially nested in the outer cylinder 1, the two sets of coil assemblies 3 are symmetrically arranged at two ends of the inner cylinder 2, the coil assemblies 3 include a plurality of coils 30 connected in series, two sets of terminal assemblies 4 are arranged on the outer cylinder 1, the two sets of coil assemblies 3 are connected with the two sets of terminal assemblies 4 in a one-to-one correspondence manner so that the two sets of coil assemblies 3 are in a parallel structure, specifically, the terminal assemblies 4 include an anode terminal and a cathode terminal, and after the plurality of coils 30 are connected in series, the beginning and the end of each coil assembly are respectively connected with the anode terminal and the cathode terminal. Preferably, the starting head and the end head are directly bent and led out and then welded on the positive terminal and the negative terminal, so that the reliability is good.
The high-repetition frequency pulse magnetic field device for the relativistic klystron amplifier adopts a double-coil LCR parallel loop structure, can obviously reduce the inductance L and the resistance R of a magnetic field coil, further improves the repetition frequency of a pulse magnetic field, and enables HPM devices such as RKA and the like to work in a high repetition frequency state.
Further, the plurality of coils 30 includes a first coil 31, a second coil 32, a third coil 33 and a fourth coil 34 sequentially arranged from the middle of the inner cylinder 2 toward the end (i.e., from the center perpendicular to the axis of the inner cylinder 2 toward the end of the inner cylinder 2), the number of turns and the number of layers of the coils constituting the first coil 31, the second coil 32, the third coil 33 and the fourth coil 34 are different, and the outer diameters of the first coil 31, the second coil 32, the third coil 33 and the fourth coil 34 are gradually increased, so that the edge effect of the magnetic field can be reduced, the length of the magnetic field uniformity region is increased, and for an HPM device with a long axial length such as RKA, the length of the magnetic field uniformity region can be greatly reduced under the premise of satisfying beam interaction, and the corresponding volume can be reduced. Preferably, in this embodiment, the first coil 31 in each coil assembly 3 adopts 18 groups of coils with number of turns x number of layers of 13 x 13, the second coil 32, the third coil 33 and the fourth coil 34 each adopt 4 groups of coils with number of turns x number of layers of 18 x 18, 20 x 20 and 23 x 23 respectively, and repeated verification shows that the edge effect of the magnetic field can be effectively weakened, and the length of the magnetic field uniformity region can be increased.
As a preferred embodiment, the coil 30 is wound by enamelled flat wire, a layer of heat-conducting glue is brushed around the coil 30 during winding, the outer side of the outermost layer is not brushed, the heat-conducting glue needs to be brushed uniformly and as thin as possible, the wire ends are tied up after winding is completed, the wire cakes are prevented from loosening, and the wire cakes are pressed and flattened by a clamp, so that the two sides of the coil 30 are flattened and smooth, and warping, swelling and heat-conducting glue blocks are prevented from being generated.
As a preferred embodiment, an epoxy glass cloth filling layer is arranged in the gap between the coil 30 and the inner cylinder 2, so that the coil 30 can be effectively wound and fixed on the inner cylinder 2.
As a preferred embodiment, the terminal assembly 4 is disposed on the lower side of the outer barrel 1, which facilitates the layout of the high-repetition frequency pulse magnetic field device in the HPM device, and is also beneficial to improving the appearance aesthetic.
Further, in this embodiment, the end of the outer cylinder 1 is fixedly connected with the end of the inner cylinder 2 through the sealing plate 5, the sealing plates 5 at two ends, the outer cylinder 1 and the inner cylinder 2 cooperate to form a closed cavity 6, the outer cylinder 1 is provided with an oil inlet nozzle 71 and an oil outlet nozzle 72 which are communicated with the closed cavity 6, transformer oil can be injected into the closed cavity 6 through the oil inlet nozzle 71, the coil assembly 3 is cooled, the reliability and stability of the high-frequency pulse magnetic field device are ensured, the transformer oil can absorb heat generated by the coil assembly 3 and then flows out from the oil outlet nozzle 72, and the high-temperature transformer oil flows back to the oil inlet nozzle 71 after being cooled, so that the transformer oil circulates. The sealing plate 5 can be of an independent structure and is fixedly connected with the outer cylinder 1 and the inner cylinder 2 respectively, so that the outer cylinder 1 and the inner cylinder 2 are kept relatively fixed; or, the sealing plate 5 can also be integrated with the outer cylinder 1 and fixedly connected with the inner cylinder 2; or, the sealing plate 5 and the inner cylinder 2 are of an integrated structure and are fixedly connected with the outer cylinder 1.
As a preferred embodiment, the oil inlet nozzle 71 is arranged on the upper side of the outer cylinder 1, the oil outlet nozzle 72 is arranged on the lower side of the outer cylinder 1, so that the inflow and outflow of the transformer oil are facilitated, and the structure is simple and reasonable.
In this embodiment, the sealing plate 5 is detachably connected with the outer cylinder 1 and the sealing plate 5 is detachably connected with the inner cylinder 2, so that the high-repetition-frequency pulse magnetic field device can be conveniently disassembled and maintained. Preferably, the sealing plate 5 adopts a circular ring structure and is sleeved on the inner cylinder 2, the end part of the outer cylinder 1 is provided with a radial flange, the radial flange is fixedly connected with the sealing plate 5 through a plurality of bolts uniformly distributed along the circumferential direction, and further, the fixed connection between the outer cylinder 1 and the sealing plate 5 is realized, and the sealing plate is simple and reliable in structure and convenient to assemble, disassemble and maintain.
Further, the end surface or the circumferential surface of the sealing plate 5 is provided with a mounting portion 51, and the mounting portion 51 may be, for example, an arc hole or a notch portion, so as to facilitate the mounting and fixing of the high-repetition frequency pulse magnetic field device to the outside.
As a preferred embodiment, the outer cylinder 1, the inner cylinder 2 and the sealing plate 5 are made of metal materials (such as stainless steel, copper or titanium alloy and the like) and have magnetic permeability less than or equal to 1.1, which is beneficial to ensuring the usability of the high-repetition-frequency pulse magnetic field device.
While the invention has been described with reference to preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.
Claims (9)
1. A high repetition frequency pulsed magnetic field device for a relativistic klystron amplifier, characterized by: including urceolus (1), inner tube (2) and two sets of coil pack (3), inner tube (2) coaxial nest in urceolus (1), two sets of coil pack (3) symmetry arrange in the both ends of inner tube (2), coil pack (3) include a plurality of coils (30) of establishing ties, be equipped with two sets of terminal pack (4) on urceolus (1), two sets of coil pack (3) with two sets of terminal pack (4) one-to-one are connected so that two sets of coil pack (3) present parallel structure, a plurality of coil (30) include by inner tube (2) middle part to tip first coil (31), second coil (32), third coil (33) and fourth coil (34) that arrange in proper order, constitute first coil (31), second coil (32), third coil (33) with the coil pack of fourth coil (34) and all are different, just first coil (31), second coil (32), number of turns (33) and the external diameter (33) of fourth coil increases gradually.
2. The high repetition frequency pulsed magnetic field device for a relativistic klystron amplifier of claim 1, wherein: the coil (30) is wound by adopting an enameled flat wire.
3. The high repetition frequency pulsed magnetic field device for a relativistic klystron amplifier of claim 1, wherein: an epoxy glass cloth filling layer is arranged in a gap between the coil (30) and the inner cylinder (2).
4. The high repetition frequency pulsed magnetic field device for a relativistic klystron amplifier of claim 1, wherein: the binding post assembly (4) is arranged on the lower side of the outer cylinder (1).
5. High repetition frequency pulsed magnetic field device for relativistic klystron amplifiers as claimed in any of claims 1-4, characterized in that: the end part of the outer cylinder (1) is fixedly connected with the end part of the inner cylinder (2) through a sealing plate (5), the sealing plates (5) at two ends, the outer cylinder (1) and the inner cylinder (2) are matched to form a closed cavity (6), and the outer cylinder (1) is provided with an oil inlet nozzle (71) and an oil outlet nozzle (72) which are communicated with the closed cavity (6).
6. The high repetition frequency pulsed magnetic field device for a relativistic klystron amplifier of claim 5, wherein: the oil inlet nozzle (71) is arranged on the upper side of the outer cylinder (1), and the oil outlet nozzle (72) is arranged on the lower side of the outer cylinder (1).
7. The high repetition frequency pulsed magnetic field device for a relativistic klystron amplifier of claim 5, wherein: the sealing plate (5) is detachably connected with the outer cylinder (1) and the sealing plate (5) is detachably connected with the inner cylinder (2).
8. The high repetition frequency pulsed magnetic field device for a relativistic klystron amplifier of claim 5, wherein: the end face or the circumferential surface of the sealing plate (5) is provided with a mounting part (51).
9. The high repetition frequency pulsed magnetic field device for a relativistic klystron amplifier of claim 5, wherein: the outer cylinder (1), the inner cylinder (2) and the sealing plate (5) are made of metal materials, and the magnetic permeability is less than or equal to 1.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210655412.3A CN114999874B (en) | 2022-06-10 | 2022-06-10 | High repetition frequency pulse magnetic field device for relativistic klystron amplifier |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210655412.3A CN114999874B (en) | 2022-06-10 | 2022-06-10 | High repetition frequency pulse magnetic field device for relativistic klystron amplifier |
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| CN114999874A CN114999874A (en) | 2022-09-02 |
| CN114999874B true CN114999874B (en) | 2024-04-16 |
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| CN202210655412.3A Active CN114999874B (en) | 2022-06-10 | 2022-06-10 | High repetition frequency pulse magnetic field device for relativistic klystron amplifier |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810537A (en) * | 2016-05-03 | 2016-07-27 | 中国人民解放军国防科学技术大学 | X-waveband high-impedance relativity theory klystron amplifier adopting annular beam cold cathode |
| CN112798682A (en) * | 2021-04-07 | 2021-05-14 | 山东大业股份有限公司 | Tire bead steel wire quality detection device |
| CN113504573A (en) * | 2021-07-06 | 2021-10-15 | 北京航空航天大学 | Well circumference resistivity measuring device based on focusing magnetic field |
-
2022
- 2022-06-10 CN CN202210655412.3A patent/CN114999874B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810537A (en) * | 2016-05-03 | 2016-07-27 | 中国人民解放军国防科学技术大学 | X-waveband high-impedance relativity theory klystron amplifier adopting annular beam cold cathode |
| CN112798682A (en) * | 2021-04-07 | 2021-05-14 | 山东大业股份有限公司 | Tire bead steel wire quality detection device |
| CN113504573A (en) * | 2021-07-06 | 2021-10-15 | 北京航空航天大学 | Well circumference resistivity measuring device based on focusing magnetic field |
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| CN114999874A (en) | 2022-09-02 |
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