Outer cylinder side opening type multistage depressed collector component and manufacturing method thereof

Abstract

The invention provides an outer cylinder side opening type multistage depressed collector component and a manufacturing method thereof. The multistage depressed collector module is formed by using a non-welding fabrication technology. In the module, a whole beryllia ceramic cylinder is divided into 1 / N arcs according to the stage number N of a collector, and the arcs are combined to form a complete cylinder; grooves are formed on the beryllia ceramic cylinder to position each electrode, and each lead wire of the collector passes through a hole respectively formed in the ceramic arcs; an opening is obliquely formed on the side edge of the outer cylinder of the collector, after the ceramic arcs and each electrode of the collector are filled in the outer cylinder, a welding flux is placed at the opening, a molybdenum cylinder is sleeved outside the outer cylinder; and the whole body is heated in a furnace, the molybdenum cylinder with a low expansion coefficient ensures that the collector outer cylinder, insulating ceramics and electrodes are tightly compacted together, and then welding and sealing are carried out, thus the collector component is manufactured. The welding flux is not filled inside the collector, when the collector works, the welding flux is prevented from evaporating and polluting the ceramics even the temperatures rises higher, so the insulating capability cannot be reduced, and the stability and service life of the product are ensured. The collector component is used in S-band high power impulse space traveling wave tubes.

Description

technical field [0001] The invention relates to a multi-stage step-down pressure collector assembly and a manufacturing method with side openings of an outer cylinder. Background technique [0002] At present, the multi-stage step-down collector adopts a metal-ceramic welding method. When the collector is working, as the temperature inside the collector rises, the solder will gradually evaporate and adhere to the surface of the insulating ceramic, reducing its insulation ability and directly affecting the stability and service life of the multi-stage step-down collector. Contents of the invention [0003] The object of the present invention is to provide a multi-stage pressure-reducing collector assembly and its manufacturing method with side openings on the outer cylinder. During the manufacturing process, no solder is used between the electrode and the ceramic cylinder, which overcomes the problems of solder evaporation polluting ceramics and decreasing insulation capaci...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a multi-stage pressure-reducing collector assembly and its manufacturing method with side openings on the outer cylinder. During the manufacturing process, no solder is used between the electrode and the ceramic cylinder, which overcomes the problems of solder evaporation polluting ceramics and decreasing insulation capacity. Defects, the multi-stage step-down collector assembly produced can be used for S-band high-power pulsed space traveling wave tubes

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