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Pole shoe used for slow-wave heat dissipation of millimeter traveling wave tube and production method thereof

A manufacturing method and technology of traveling wave tubes, applied in the manufacture of discharge tubes/lamps, cold cathodes, electrode systems, etc., can solve the problems that the thermal conductivity of the pole shoe cannot meet the slow wave heat dissipation of traveling wave tubes, and achieve a solution Slow wave heat dissipation of traveling wave tubes, improved service life and working accuracy, and simple structure

Inactive Publication Date: 2012-09-05
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a pole shoe for millimeter traveling wave tube slow-wave heat dissipation and its manufacturing method to solve the problem that the thermal conductivity of the pole shoe in the traditional technology cannot meet the slow-wave heat dissipation of the traveling wave tube

Method used

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  • Pole shoe used for slow-wave heat dissipation of millimeter traveling wave tube and production method thereof
  • Pole shoe used for slow-wave heat dissipation of millimeter traveling wave tube and production method thereof
  • Pole shoe used for slow-wave heat dissipation of millimeter traveling wave tube and production method thereof

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Embodiment Construction

[0023] Such as figure 2 As shown, a pole shoe for slow wave heat dissipation of a millimeter traveling wave tube includes a pole shoe wall 11 made of DT8 magnetic material on both sides, and a heat conduction layer 12 of oxygen-free copper material is sandwiched between the pole shoe walls 11 , the mass of oxygen-free copper accounts for no more than 10% of the total mass of the pole piece, and the heat conduction layer 12 and the pole piece wall 11 are connected as a whole by diffusion welding.

[0024] Such as Figure 4 As shown, put the molybdenum base 1, spacer 9, and molybdenum rod 3 in order, and insert the centering rod 8 into the centering hole; insert the mica sheet 10, molybdenum spacer 5, pole shoe wall 11, and heat conduction layer 12 according to As shown in the figure, it is stacked in this way, wherein the mica sheet 10 is to prevent the parts from sticking together after diffusion welding and cannot be separated; press the inner pressure block 6, and set the ...

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Abstract

The invention discloses a pole shoe used for slow-wave heat dissipation of a millimeter traveling wave tube. The pole shoe comprises pole shoe walls arranged at the two sides and made of DT8 magnetic material, wherein a heat conduction layer made of oxygen-free copper material is clamped between the pole shoe walls; and the mass of the oxygen-free copper is not more than 10% of the mass of the total mass of the pole shoe. In the invention, the pole shoe walls and the heat conduction layer are placed in a vacuum furnace and then welded into one by diffusion welding by adopting a diffusion welding tool. The pole shoe used for the slow-wave heat dissipation of the millimeter traveling wave tube in the invention has simple structure, the production method can be easily realized, and the problem of the slow-wave heat dissipation of the traveling wave tube in the traditional technology can be effectively solved. After the heat conduction layer made of oxygen-free copper material is added between the pole shoe walls, the heat conduction capacity of the pole shoe is improved by more than three times, thereby completely meeting the requirement of the slow-wave heat dissipation of the traveling wave tube, greatly prolonging the service life of the traveling wave tube and improving the working accuracy of the traveling wave tube.

Description

technical field [0001] The invention relates to the field of manufacturing traveling wave tubes, in particular to a pole shoe for slow wave heat dissipation of millimeter traveling wave tubes and a manufacturing method thereof. Background technique [0002] A traveling wave tube is a microwave active device that amplifies signals through the interaction of microwave signals with high-energy electron beams. In order for the signal to interact with the electron beam, a high-frequency slow-wave system and a magnetic focusing system are necessary. The high-frequency slow-wave system can ensure the smooth passage of high-frequency signals and interact with the electron beam. The magnetic focusing system is set outside the slow-wave system to ensure that the electron beam passes through the slow-wave region without divergence. The magnetic focusing system is composed of magnetic steel 13 and pole piece 14 (the material of the pole piece is DT8, which has the largest magnetic ener...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J23/24H01J9/02
Inventor 吴华夏方卫侯信磊卢希跃卞磊
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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