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Large power quadrupole delectronic tube and its manufacturing method

A production method and electron tube technology, which are applied to non-electron emission control electrodes, the manufacture of discharge tubes/lamps, transit time electron tubes, etc., can solve the problems of increasing grid heat consumption, reduce production conditions, and achieve good high-voltage performance. Effect

Inactive Publication Date: 2004-03-03
卫军民 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention provides a high-power quadrupole electron tube with a simple manufacturing process and a manufacturing method of the electron tube for overcoming the defects of the single-material grid in terms of increased heat consumption and powder loss and ignition

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  • Large power quadrupole delectronic tube and its manufacturing method
  • Large power quadrupole delectronic tube and its manufacturing method
  • Large power quadrupole delectronic tube and its manufacturing method

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Embodiment Construction

[0023] It can be seen from the figure that the basic structure of the present invention is basically the same as that of the existing high-power tetrode. A cooling water jacket 1 is provided on the periphery of the electron tube, and its cathode 2, first grid 3, second grid 4, and anode 5 are also arranged in a circular shape and concentrically. The improved first grid 3 and the second grid 4 are respectively made of two different materials, pyrolytic graphite and molybdenum wire-sprayed tungsten carbide plated with platinum. The first grid is made of pyrolytic graphite material which is stronger in high temperature resistance and heat dissipation than molybdenum metal, which can make the first grid resistant to high temperature radiation, not easy to deform, and has strong heat dissipation ability, making it difficult to Damage; the second grid made of molybdenum sprayed with tungsten carbide and then plated with platinum keeps the electron tube from falling powder under high...

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Abstract

The electron tube consists of cooling water jacket, cathode, first grid, second grid and anode. The improved first grid is made from pyrolytic graphite. The second grid is made from molybdenum filament welded in squirrel cage shape. With surface being sprayed by tungsten carbide, the molybdenum filament is sintered and plated by platinum. The upper parts of two grids are connected to ceramic ring at upper part of cathode. The first grid is made from graphite after dedicated procedure the first grid possesses higher capabilities of high temperature resistant and radiation resistant. The heat dissipation capability of the first grid made from graphite is 5 times of grid made from molybdenum filament so as to reduce size greatly.

Description

technical field [0001] The invention relates to a high-power quadrupole electron tube and a manufacturing method thereof, belonging to the technical field of electronic components. Background technique [0002] In the fields of broadcasting and communication, high-power transmitters mostly use high-power quadrupole tubes as high-frequency conversion devices. The four electrodes of this electron tube, namely the cathode, the first grid, the second grid (or curtain grid) and the anode, have circular cross-sections and are regularly arranged according to concentric circles. The cathode is the innermost, followed by the first grid, the second grid, and the outermost is the anode. In the traditional production of high-power tetrodes, the materials of the first grid and the second grid are made of the same material, that is, if molybdenum is used, the first and second grids are all welded with molybdenum wire; Material, the first and second gates are all made of graphite. When ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/02H01J19/30H01J19/38H01J25/00
Inventor 卫军民张香斋朱自文
Owner 卫军民
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