CN219203086U

CN219203086U - Diode device with adjustable emitter axis position

Info

Publication number: CN219203086U
Application number: CN202320249133.7U
Authority: CN
Inventors: 雷禄容; 张运俭; 徐莎; 王冬; 秦奋; 何琥; 张勇; 张伟; 崔越
Original assignee: Institute of Applied Electronics of CAEP
Current assignee: Institute of Applied Electronics of CAEP
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-06-16
Anticipated expiration: 2033-02-17

Abstract

The utility model relates to a diode device with an adjustable emitter axis position, which comprises a cathode assembly and an adjusting assembly, wherein the cathode assembly comprises a shielding bowl cathode seat, a cathode supporting rod and an emitter, one end of the cathode supporting rod is connected with the emitter, the other end of the cathode supporting rod is connected with the shielding bowl cathode seat through the adjusting assembly, and the adjusting assembly can move perpendicular to the axis of the shielding bowl cathode seat.

Description

Diode device with adjustable emitter axis position

Technical Field

The utility model belongs to the technical field of high-power microwave devices, and particularly relates to a diode device with an adjustable emitter axis position.

Background

Currently, in high power microwave devices, an explosive emission cathode is generally used to generate a high current electron beam. The voltage between the cathode and the anode is in the order of megavolts, and the current is between a few kiloamperes and tens of kiloamperes. In a linear beam high-power microwave device, when an electron beam axis does not coincide with a device axis, an electron beam entering the high-power microwave device is easy to excite to play a non-working mode when acting with a high-frequency field of an interaction area, or the electron beam is beaten to a beam wave interaction area wall to cause the microwave pulse to finish in advance. Therefore, in the debugging process of the linear beam high-power microwave device, the axis of the electron beam and the axis of the device need to be adjusted to coincide as much as possible.

In the conventional linear beam high-power microwave device debugging, the positions of the electron beam axis and the device axis are debugged mainly by controlling the machining precision of the device and installing a target in the device for multiple target shooting. In the process of target shooting and debugging, a target piece is firstly arranged in a device, then vacuum pumping, high voltage and a magnetic field are carried out, an emitter emits electron beams to perform target shooting, then the device is stopped, the target piece is taken down, and the position of electron beam spots on the target piece is observed to determine the axis position of the electron beams. If the axis deviates, adjusting the axis position of the emitter or the axis position of the device, then installing a new target, adopting a vacuum generating system to make the device in a vacuum working state again, repeating the steps of shooting, disassembling the device, taking down the target, observing the axis position of the electron beam spot and the like until the axis of the electron beam almost coincides with the axis of the device. The whole debugging process needs repeated disassembly and assembly of devices and repeated vacuumizing, and has low efficiency.

Disclosure of Invention

Aiming at various defects in the prior art, in order to solve the problems, the diode device with the adjustable axis position of the emitter is provided, devices are not required to be repeatedly disassembled and assembled, vacuumizing is not required, and the debugging is rapid.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a diode device of emitter axis position adjustable, includes cathode assembly and adjusting part, the cathode assembly includes shielding bowl cathode holder, cathode support pole and emitter, the one end of cathode support pole with the emitter is connected, the other end of cathode support pole passes through adjusting part with shielding bowl cathode holder is connected, adjusting part can be perpendicular to the axis of shielding bowl cathode holder and remove.

The technical scheme further sets up to, adjusting part includes briquetting, regulation section of thick bamboo and slider, the tip of regulation section of thick bamboo with shielding bowl cathode seat is connected, the briquetting is located the inside of regulation section of thick bamboo, and form the cavity between briquetting and the regulation section of thick bamboo, the one end of slider is slidably located in the cavity, just the other end of slider with the cathode support pole is connected.

The technical scheme is further that the pressing block is fastened with the adjusting cylinder through a first bolt, and a second bolt with the end part propped against the outer surface of the sliding block is arranged on the periphery of the adjusting cylinder.

The technical scheme further sets up to, still includes an anode section of thick bamboo, the cathode assembly with adjusting part all is located the inside of an anode section of thick bamboo, be equipped with the takeover along its radial on the section of thick bamboo wall of an anode section of thick bamboo.

The technical scheme is further characterized in that the connecting pipes are provided with a plurality of connecting pipes, one connecting pipe is connected with the corrugated pipe for vacuumizing, the other connecting pipes are sealed by the blind plates, and the connecting pipes are correspondingly arranged with the second bolts.

The technical scheme is further characterized in that the section of the sliding block is of an N-sided shape, each side of the sliding block corresponds to a second bolt and a connecting pipe respectively, and N is a positive integer not smaller than 3.

The technical scheme is characterized by further comprising an insulator and a device outer barrel, wherein one end of the anode barrel is connected with the insulator, the other end of the anode barrel is connected with the device outer barrel, the cathode seat of the shielding bowl penetrates through the insulator, and one end, connected with the emitter, of the cathode support rod extends to the inside of the device outer barrel.

The technical scheme is that the inner part of the device outer cylinder is provided with a centering cylinder, the end part of the centering cylinder can be in contact with the emitter, and the inner diameter of the centering cylinder is larger than the outer diameter of the emitter.

The technical scheme is further characterized in that an annular block is arranged on the periphery of the centering cylinder, and the outer diameter of the annular block is smaller than the inner diameter of the device outer cylinder.

The technical scheme is that the periphery of the device outer cylinder is provided with magnets.

The beneficial effects of the utility model are as follows:

1. the central axis of the emitter is regulated by the regulating component, so that the relative position of the electron beam axis emitted by the emitter and the device outer barrel axis is regulated, and the device is suitable for experimental debugging of linear beam high-power microwave devices.

2. Repeated disassembly and assembly and repeated vacuumizing are not needed, and the debugging efficiency is improved.

3. The relative position between the centring cylinder axis and the emitter axis is observed through the end of the centring cylinder. The centers of the centering cylinder and the emitter are precisely controlled to be in a straight line.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a partial schematic view of the portion I of FIG. 1;

FIG. 4 is a partial schematic view of the portion II of FIG. 1;

fig. 5 is a partial schematic view of fig. 2 at iii.

In the accompanying drawings: 1-insulator, 2-shielding bowl cathode seat, 3-briquetting, 4-adjustment section of thick bamboo, 5-slider, 6-second bolt, 7-cathode support pole, 8-emitter, 9-annular piece, 10-centering section of thick bamboo, 11-device urceolus, 12-takeover, 13-blind plate, 14-positive pole section of thick bamboo, 15-first bolt.

Detailed Description

In order to make the technical solution of the present utility model better understood by those skilled in the art, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without making creative efforts should fall within the scope of protection of the present application. In addition, directional words such as "upper", "lower", "left", "right", and the like, as used in the following embodiments are merely directions with reference to the drawings, and thus, the directional words used are intended to illustrate, not to limit, the utility model.

The utility model will be further described with reference to the drawings and preferred embodiments.

Embodiment one:

as shown in fig. 1-5, a diode device with an adjustable emitter axis position comprises a cathode assembly and an adjusting assembly, wherein the cathode assembly comprises a shielding bowl cathode seat 2, a cathode supporting rod 7 and an emitter 8, one end of the cathode supporting rod 7 is connected with the emitter 8, the other end of the cathode supporting rod 7 is connected with the shielding bowl cathode seat 2 through the adjusting assembly, and the adjusting assembly can move perpendicular to the axis of the shielding bowl cathode seat 2.

Preferably, the emitter 8 is in a transition fit with the aperture at the end of the cathode support rod 7. The cathode seat 2 and the cathode support rod 7 of the shielding bowl are made of metal, and 4 axial through holes, which are not limited to 4, are distributed on the circumference of the cathode seat for exhausting internal gas during vacuumizing.

Specifically, the adjusting component comprises a pressing block 3, an adjusting cylinder 4 and a sliding block 5, the end part of the adjusting cylinder 4 is in threaded connection with the shielding bowl cathode seat 2, and the pressing block 3 is located inside the adjusting cylinder 4. The adjusting cylinder 4 is of a reducing structure, a cavity is formed between the pressing block 3 and the adjusting cylinder 4, one end of the sliding block 5 is slidably arranged in the cavity, and the other end of the sliding block 5 is in threaded connection with the cathode supporting rod 7.

It is worth noting that the slide 5 is confined in the cavity while the slide 5 is movable perpendicular to the axis of the cathode holder 2 of the shield bowl, but not parallel to the axis of the cathode holder 2 of the shield bowl.

Preferably, the adjusting cylinder 4 and the sliding block 5 are made of metal, and meanwhile, a through hole is formed in the center of the pressing block 3 and is used for exhausting air during vacuumizing.

Specifically, the pressing block 3 is fastened with the adjusting cylinder 4 through a first bolt 15, and a second bolt 6 with an end part abutting against the outer surface of the sliding block 5 is arranged on the periphery of the adjusting cylinder 4.

Specifically, the cathode assembly and the adjusting assembly are both positioned inside the anode cylinder 14, and the connecting tube 12 is arranged on the cylinder wall of the anode cylinder 14 along the radial direction of the cylinder wall. It should be noted that, the connection pipes 12 are provided with a plurality of connection pipes, one connection pipe is connected with a bellows for vacuumizing, the other connection pipes are sealed by blind plates 13, the connection pipes 12 are correspondingly arranged with the second bolts 6, and the corresponding arrangement includes equal quantity and corresponding relative positions.

In this embodiment, the cross section of the sliding block 5 is an N-sided polygon, and each side of the sliding block 5 corresponds to the second bolt 6 and the adapter tube 12, where N is a positive integer not less than 3.

Specifically, the device further comprises an insulator 1 and a device outer barrel 11, one end of the anode barrel 14 is connected with the insulator 1 through a flange, the other end of the anode barrel 14 is connected with the device outer barrel 11 through a flange, and meanwhile, the anode barrel 14 and the device outer barrel 11 are coaxially arranged. The shielding bowl cathode seat 2 penetrates through the insulator 1, and one end, connected with the emitter 8, of the cathode supporting rod 7 extends to the inside of the device outer barrel 11.

Specifically, the device outer cylinder 11 is internally provided with a centering cylinder 10 whose end can be in contact with the emitter 8, and the inner diameter of the centering cylinder 10 is larger than the outer diameter of the emitter 8. Preferably, the inner diameter of the centering cylinder 10 is 0.2mm larger than the outer diameter of the emitter 8, so that the centering cylinder 10 can be sleeved on the periphery of the emitter 8 all the time when the axis of the emitter 8 is adjusted.

Specifically, the periphery of the centering cylinder 10 is provided with an annular block 9, and the outer diameter of the annular block 9 is smaller than the inner diameter of the device outer cylinder 11, so that the annular block 9 can move in the device outer cylinder 11 along the axial direction. Preferably, 2 annular blocks 9 are provided, and the interval between the 2 annular blocks 9 is limited by that when the centering cylinder 10 is sleeved on the periphery of the emitter 8, the 2 annular blocks 9 are still positioned on the right side of the device outer cylinder 11. Preferably, the centering cylinder 10 and the device outer cylinder 11 are both cylindrical structures.

Specifically, the outer periphery of the device outer cylinder 11 is provided with magnets.

Preferably, the emitter 8 may be made of graphite, carbon fiber, etc., the centering cylinder 10 and the annular block 9 may be made of duralumin or stainless steel, the insulator 1 may be reinforced nylon or ceramic, etc., and the magnet may be a permanent magnet or an electromagnet.

Before a microwave experiment, the left end of the insulator 1 and the left end of the cathode seat 2 of the shielding bowl are respectively connected with the outer conductor and the inner conductor of the front-stage high-voltage pulse source, the centering cylinder 10 is inserted from the right end of the device outer cylinder 11, the left end of the centering cylinder 10 is made to be close to the right end of the emitter 8 as much as possible (for example, the left end of the centering cylinder 10 is about 1cm from the right end of the emitter 8), and the position of the emitter 8 in the hole is observed from the hole at the right end of the centering cylinder 10. When the position of the emitter 8 in the hole is biased toward the direction A, the second bolt 6 in the direction A is adjusted by passing an elongated hexagonal head rod through the adapter 12 in the direction A, so that the second bolt 6 in the direction A moves against the slider 5 in the cavity formed by the press block 3 and the adjustment cylinder 4 in the opposite direction A. Since the right end of the slider 5 is screwed with the cathode support rod 7 of the emitter 8, the axis of the emitter 8 moves synchronously with the slider 5. For the linear beam high power microwave device, the electron beam is emitted from the right end face of the emitter 8, so that the axis of the emitter 8 is the axis of the electron beam, that is, when the second bolt 6 is adjusted to move the slider 5 in a certain direction, the axis of the electron beam is caused to move in the same direction. The second bolts 6 at the corresponding positions are adjusted by repeatedly observing the deflection positions of the emitters 8 in the centering cylinder 10 until the left end of the centering cylinder 10 can be sleeved on the periphery of the right end of the emitters 8, the distance between the right end of the emitters 8 and the inner wall of the centering cylinder 10, which is observed in the hole at the right end of the centering cylinder 10, is uniform along the circumferential direction, the rest of the second bolts 6 are adjusted, the ends of the rest of the second bolts 6 are abutted against each side of the sliding block 5, and thus, the adjustment work of the cathode electron beam axis and the device axis is completed.

The foregoing detailed description of the utility model has been presented for purposes of illustration and description, but is not intended to limit the scope of the utility model, i.e., the utility model is not limited to the details shown and described.

Claims

1. The diode device is characterized by comprising a cathode assembly and an adjusting assembly, wherein the cathode assembly comprises a shielding bowl cathode seat, a cathode supporting rod and an emitter, one end of the cathode supporting rod is connected with the emitter, the other end of the cathode supporting rod is connected with the shielding bowl cathode seat through the adjusting assembly, and the adjusting assembly can move perpendicular to the axis of the shielding bowl cathode seat.

2. The diode device of claim 1, wherein the adjusting assembly comprises a press block, an adjusting cylinder and a slide block, the end of the adjusting cylinder is connected with the cathode base of the shielding bowl, the press block is positioned in the adjusting cylinder, a cavity is formed between the press block and the adjusting cylinder, one end of the slide block is slidably arranged in the cavity, and the other end of the slide block is connected with the cathode support rod.

3. The diode device with the adjustable emitter axis position according to claim 2, wherein the pressing block is fastened with the adjusting cylinder through a first bolt, and a second bolt with an end part abutting against the outer surface of the sliding block is arranged on the periphery of the adjusting cylinder.

4. A diode device with adjustable emitter axis position according to claim 3, further comprising an anode cylinder, wherein the cathode assembly and the adjusting assembly are both positioned inside the anode cylinder, and a connecting tube is arranged on the cylinder wall of the anode cylinder along the radial direction of the cylinder wall.

5. The diode device with the adjustable emitter axis position according to claim 4, wherein a plurality of connection pipes are provided, one connection pipe is connected with a corrugated pipe for vacuumizing, the other connection pipes are sealed by blind plates, and the connection pipes are arranged corresponding to the second bolts.

6. The diode device of claim 4 or 5, further comprising an insulator and a device outer barrel, wherein one end of the anode barrel is connected to the insulator, the other end of the anode barrel is connected to the device outer barrel, the shield bowl cathode seat penetrates through the insulator, and the end of the cathode support rod connected to the emitter extends into the device outer barrel.

7. The diode device with adjustable emitter axis position according to claim 6, wherein a centering cylinder with an end part capable of contacting with the emitter is arranged inside the device outer cylinder, and the inner diameter of the centering cylinder is larger than the outer diameter of the emitter.

8. The diode device with adjustable emitter axis position according to claim 7, wherein the outer periphery of the centering cylinder is provided with an annular block, and the outer diameter of the annular block is smaller than the inner diameter of the device outer cylinder.

9. The diode device of claim 6, wherein the outer periphery of the device outer barrel is provided with magnets.