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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 6. Отображено 6.
28-04-2023 дата публикации

Hot assembly method and hot assembly device of traveling wave tube porcelain plate collector

Номер: CN116031118A
Автор: ZHAI DEHUI, ZHANG YUANMIN, HE JUN, ZHANG JIWEI
Принадлежит:

The invention provides a hot assembly method and a hot assembly device for a traveling wave tube porcelain plate collector, the hot assembly device comprises a hot assembly rack, the hot assembly rack is provided with a positioning assembly, a heating temperature measurement unit, a base and a push rod from top to bottom, and the base is provided with a pre-assembly die. The heating and temperature measuring unit is used for loading the collector outer cylinder and carrying out heating and temperature monitoring on the collector outer cylinder; the positioning assembly is used for positioning and fixing the collector outer cylinder loaded in the heating temperature measurement unit; the preassembling mold is used for clamping a collector preassembling assembly, the collector preassembling assembly comprises a plurality of porcelain plates and a plurality of electrode assemblies, a plurality of electrode insulating grooves and a plurality of electrode assemblies are embedded in each porcelain ...

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Номер записи: 1
30-06-2023 дата публикации

Collector composite structure for traveling wave tube and preparation method of collector composite structure

Номер: CN116364503A
Автор: LIU YONGLIANG, MIAO GUOXING, LYU WEI, TANG KANGSONG, LIU LIN, MA FANG, GAO CUI, LI FEN, MA JINGJING, ZHAI DEHUI, LIU XIN'AI
Принадлежит:

The invention provides a collector composite structure for a traveling wave tube and a preparation method thereof, and relates to the technical field of vacuum electronic devices. The method comprises the following steps: preparing an insulating cylinder made of a high-thermal-conductivity boron nitride material by adopting a chemical vapor deposition method, and carrying out secondary processing on redundant parts; a collector electrode made of a pyrolytic graphite material is prepared on the inner wall of the insulating cylinder by adopting a chemical vapor deposition method, so that the collector electrode is connected with the insulating cylinder, and redundant parts are secondarily processed; an electrode tail cover made of a pyrolytic graphite material is prepared by adopting a chemical vapor deposition method, and redundant parts are secondarily processed. According to the collector prepared by the method, vapor-deposited high-purity and high-density pyrolytic boron nitride and pyrolytic ...

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Номер записи: 2
23-06-2023 дата публикации

Cold extrusion method of slow-wave assembly for traveling wave tube

Номер: CN116313691A
Автор: LIU YONGLIANG, MIAO GUOXING, WANG GANG, GAO CUI, LYU WEI, MA FANG, ZHAI DEHUI, LI FEN, SONG WEI, MA JINGJING, LIU XIN'AI
Принадлежит:

The invention provides a cold extrusion method for a slow-wave assembly for a traveling wave tube, and relates to the technical field of vacuum electronic devices. The method comprises the following steps: firstly, on the basis of a preset resilience value, a wound spiral line and a core rod are tightly adhered by adopting an adhesive, a clamping rod and the spiral line with the core rod are sequentially put into a plurality of groups of clamping assemblies, guide molds and limiting molds are assembled at two ends, and the plurality of groups of clamping assemblies, the clamping rod and the spiral line with the core rod are locked by using screws; and then, the positioned clamping rods and the spiral line are pushed into the composite tube shell, the multiple clamping assemblies are sequentially disassembled, and after the clamping assemblies are assembled in place, the guide mold and the limiting mold are disassembled. And immersing the assembled assembly into an organic solvent such as ...

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Номер записи: 3
07-04-2023 дата публикации

Waveguide window welding method and tool applied to space traveling wave tube and waveguide window

Номер: CN115922008A
Автор: ZHAI DEHUI, HE JUN, LYU WEI, LI FEN
Принадлежит:

The invention provides a waveguide window welding method and tool applied to a space traveling wave tube and a waveguide window, and the method comprises the steps: carrying out the first brazing operation of an output window sheet of the waveguide window and a waveguide converter through a first sealing sub-tool, and obtaining a welded waveguide conversion window sheet assembly, the first sealing sub-tool is used for fixing the relative position between the output window and the waveguide converter; and second brazing operation is carried out on the waveguide conversion window piece assembly and the waveguide window flange through a positioning pin and a second sealing sub-tool, the welded waveguide window assembly is obtained, and the positioning pin and the second sealing sub-tool are used for fixing the relative position between the waveguide conversion window piece assembly and the waveguide window flange.

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Номер записи: 4
23-06-2023 дата публикации

Method and device for preparing collector composite outer cylinder for space traveling wave tube

Номер: CN116313695A
Автор: ZHAI DEHUI, ZHANG YUANMIN, HE JUN, ZHANG JIWEI, WANG JIAN
Принадлежит:

The invention provides a preparation method and device of a collector composite outer cylinder for a space traveling wave tube. The collector composite outer cylinder is composed of an oxygen-free copper inner cylinder and a dispersion copper outer cylinder, and the oxygen-free copper inner cylinder and the dispersion copper outer cylinder are welded together in a precise pressure diffusion welding mode. The oxygen-free copper serves as an electric vacuum material and has the advantages of being good in air tightness, heat dissipation performance and the like, the dispersion copper has the good heat dissipation characteristic and the good strength and rigidity characteristics, the precise pressure diffusion welding technology can reduce the influence caused by deformation of the outer cylinder in the hot assembly process, and precise welding is achieved. According to the collector composite outer cylinder for the space traveling wave tube, the structural reliability of the collector can ...

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Номер записи: 5
12-03-2014 дата публикации

Fast grouping and retrieving method for machining equipment

Номер: CN103631925A
Автор: ZHANG FAPING, ZHAI DEHUI, YAN YAN, WANG MENG, ZHANG GONGTAO
Принадлежит:

The invention relates to a fast grouping and retrieving method for machining equipment, and belongs to the field of machining and manufacturing. According to the method, the equipment is described by taking three dimensions of the type, the size and the machining precision of machining features as the machining feature vectors of manufacturing equipment; then, according to the feature vector description of the manufacturing equipment, the conventional extended fuzzy C-means algorithm for equipment grouping is improved and the machining feature vector-based equipment grouping algorithm is constructed; corresponding manufacturing equipment can be retrieved fast according to an optimal equipment grouping result. The fast grouping and retrieving for the machining equipment is an important link for manufacturability evaluation, process planning, production planning and the like. The efficiency of the algorithm is improved by disclosing a grouping method based on equipment machining feature vectors ...

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Номер записи: 6