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Improved heat-shrinking clamping method for slow-wave system of helical traveling wave tube

A technology of slow wave system and helical wire, which is applied in the manufacture of electrode systems, discharge tubes/lamps, ships or lead wires, etc. It can solve problems such as poor heat dissipation, poor structural firmness, and complicated processes, and achieve heat dissipation capabilities Improve and reduce contact thermal resistance, and precisely control the effect of deformation

Inactive Publication Date: 2012-02-15
HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, various methods have deficiencies, such as poor heat dissipation, poor thermal stability, poor structural firmness, or too complicated process to realize

Method used

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  • Improved heat-shrinking clamping method for slow-wave system of helical traveling wave tube
  • Improved heat-shrinking clamping method for slow-wave system of helical traveling wave tube
  • Improved heat-shrinking clamping method for slow-wave system of helical traveling wave tube

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Embodiment Construction

[0009] The core of the technical solution of the present invention is to use a specially designed conical fixture for thermal shrinkage clamping. At high temperature, the slow wave line assembly of the helical traveling wave tube is always under a certain pressure according to the thermal expansion coefficient of different materials. The fixture ensures that the slow wave line components are evenly stressed within the range of temperature rise and fall, and the contact between the helix, the clamping rod and the shell is transitioned with a copper layer with good thermal conductivity, and they form diffusion welding under high temperature and high pressure. A good thermal contact is obtained, the thermal resistance is reduced, and thus the heat dissipation capability of the slow wave line structure is improved.

[0010] During specific implementation, the tube shell is cold-pressed on the cold spring clamp, the helix and the medium clamping rod are fixed with the clamp, and the...

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Abstract

An improved heat-shrinkage clamping method for the slow-wave system of a helical traveling wave tube, which belongs to the field of microwave electronic devices. The helical wire cold spring is loaded into the shell to form the cold spring shell assembly, continue to operate as follows, a. Put the assembled cold spring shell assembly into the special tapered fixture; b. Put the above components and fixture Heating together in a vacuum furnace; c. After cooling to room temperature, take out the cold spring pressed shell assembly. The use of special tapered fixtures solves the shortcomings of conventional fixtures that are not easy to control the amount of thermal compression, and can precisely control the amount of deformation; at the same time, the contact between the helix, the clamping rod and the shell is transitioned with copper to reduce the contact heat between the parts Resistance, the cooling capacity of components has been greatly improved.

Description

technical field [0001] The invention belongs to the field of microwave electronic devices, and in particular relates to an improved heat shrinkage clamping method for a slow wave system of a helical traveling wave tube. technical background [0002] The process structure and clamping method of the helical traveling wave tube slow wave system vary with the operating frequency and power performance requirements. Different process structures and clamping methods have different heat dissipation capabilities. With the increase of the operating frequency of microwave electronic devices With the increase of the average power, the heat dissipation problem has become the technical bottleneck of the helical slow wave system. Therefore, in order to obtain a good heat dissipation slow wave system, it is necessary to optimize the process structure and clamping method. In the helical traveling wave tube, there are many types of clamping and fixing methods between the helical wire, the cla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J9/00H01J9/24H01J23/26
Inventor 吴华夏贺兆昌张文丙周秋俊朱刚程海董晨
Owner HUADONG PHOTOELECTRIC TECHN INST OF ANHUI PROVINCE
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