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A 15-shot cathode assembly for a multi-shot klystron and a preparation method thereof

A cathode assembly and cathode technology, applied in the field of multi-injection klystrons, can solve the problem of no multi-injection cathode research report, etc., and achieve the effects of superior performance, reasonable structure design and high precision

Active Publication Date: 2019-09-27
NANJING SANLE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no research report on the preparation of multi-shot cathodes

Method used

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  • A 15-shot cathode assembly for a multi-shot klystron and a preparation method thereof
  • A 15-shot cathode assembly for a multi-shot klystron and a preparation method thereof
  • A 15-shot cathode assembly for a multi-shot klystron and a preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 and figure 2 As shown, a 15-note cathode assembly for a multi-note klystron, which includes: a cathode base 1, 15 cathode emitters 2 embedded in small holes on the cathode base 1 at even intervals; the back of the cathode base 1 and the cathode support cylinder There are tungsten-molybdenum powder blocks 4 pressed between the 3, and the tungsten-molybdenum powder blocks 4 fix 15 emitters 2; the cathode support tube 3 is provided with a heating wire; the cathode base 1 is provided with 3 positioning holes.

[0050] The cathode emitter 2 is provided with steps, and the positioning of the steps ensures that the cathode emitter 2 is consistent with the cathode base 1 plane.

[0051] In the 15-shot cathode assembly for the multi-shot klystron described above, 10 cathode emitters 2 are evenly embedded in the outer ring of the cathode base 1, and 5 cathode emitters 2 are evenly embedded in the inner ring.

Embodiment 2

[0053] The processing and preparation method of the 15-note cathode assembly for the multi-note klystron comprises the following steps:

[0054] A. Design and processing of parts

[0055] Design and processing of cathode base 1:

[0056] The dimensional accuracy of the 15 small holes on the cathode base (1) is designed to be 0.01±0.001mm; the positional accuracy of the 15 small holes is required to be zero tolerance in the diameter direction and evenly distributed in the circumferential direction; the 3 positioning holes and the 15 small holes The position accuracy of the hole is Φ0.02±0.002mm; the cathode base 1 is clamped on the drilling table, and 15 small holes and 3 positioning holes are sequentially processed with a drill;

[0057] B. Processing of cathode components

[0058] Such as image 3 As shown, firstly, according to the calculation, weigh 1.75g ​​of tungsten and molybdenum powder required for pressing; assemble the cathode base 1 and the cathode support cylind...

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Abstract

The present invention discloses a 15-beam cathode module for a multi-beam klystron and a preparation method thereof. The 15-beam cathode module for a multi-beam klystron comprises a cathode pedestal (1), and 15 cathode emitters (2) uniformly embedded into small holes on the cathode pedestal (1) at intervals; a tungsten-molybdenum powder block (4) is pressed between the back surface of the cathodepedestal (1) and a cathode support tube (3), and the tungsten-molybdenum powder block (4) is configured to fix the 15 cathode emitters (2); the cathode support tube (3) is internally provided with a heating hot wire; and the cathode emitters (2) are provided with steps, and matching of the cathode emitters (2) and the plane of the cathode pedestal (1) is ensured through step location. The 15-beamcathode module is reasonable in structure design and high in precision, and can supply a cathode emitting current above 25A / cm<2> in a whole tube environment. The preparation method of the cathode module is high in process operability, high in precision in processing preparation good in performance, and can obtain the cathode module with high current emitting density.

Description

technical field [0001] The invention relates to a multi-shot klystron, in particular to a 15-shot cathode assembly for the multi-shot klystron and a processing and preparation method thereof. Background technique [0002] Multi-beam klystron is a novel high-power klystron developed on the basis of high-power klystron by combining multi-electron beam technology, broadband technology, period reversal permanent magnet focusing and high emission density cathode. Microwave vacuum electronics. It has the advantages of high conductance coefficient, low working voltage, small volume and weight, wide frequency band, high frequency and gain. The preparation of cathode assemblies with high emission current density is one of the most critical technical issues. At present, the use of more membrane-impregnated cathodes can basically meet its needs. Etching Due to the continuous development of military electronic technology, the whole machine has put forward comprehensive high-performanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/04H01J9/04
Inventor 王玉春吴亚琴许姗胡文景李林范亚松张坤赵请马静
Owner NANJING SANLE GROUP