Microwave break down protecting method in wave guide

Abstract

The invention discloses a protecting method from microwave breakdown in the waveguide, which character is that a small hole is opened on the waveguide wall, and then an airtight stainless steel pipe is sealed around hole, in which, a quartz glass window with a group of focusing lens and valve tube airtight components are located. The breakdown strike fire reaches the group of focusing lens and focuses on the face of optical fiber cable through the quartz glass window, which transmits the optical signals to the environment far from radiation to take photoelectric conversion and converts into the pulse signals to turn off the microwave switch through the optical isolator driver. The invention uses the condenser lens and optical fiber cable to transmit the optical signals of breakdown fire, so that the fire in the waveguide can be detected in the place far from microwave and nuclear radiation.

Description

technical field [0001] The invention relates to the protection technology of microwave breakdown when the waveguide operates with high-power microwave. Background technique [0002] At present, there are many high-power microwave systems in China, such as radar systems, HT-7, HL-2A tokamak device plasma low-hybrid wave heating system. Generally, the photosensitive device is directly installed on the waveguide wall, and the arcing and sparking breakdown around the output window of the klystron amplifier or the microwave window in the waveguide is detected through the small hole on the waveguide wall. However, sometimes due to the influence of long-term transmission signals, it is easy to be interfered by external strong electromagnetic pulses; moreover, when there is strong background stray light in the waveguide instead of sparking light when the microwave breaks down, it is easy to Giving wrong instructions leads to misjudgment. Moreover, sometimes it is very difficult to...

AI Technical Summary

Problems solved by technology

However, sometimes due to the influence of long-term transmission signals, it is easy to be interfered by external strong electromagnetic pulses; moreover, when there is a strong background stray light in the waveguide instead of the ignition light when the microwave breaks down, it is easy to Misjudgment due to wrong instructions

Moreover, sometimes it is very difficult to install this photosensitive device in a high-vacuum environment in terms of use and maintenance; or in an environment with nuclear radiation and microwave radiation, maintaining this device is likely to expose people to radiation hazards; at the same time, it cannot The ground wire of the microwave system and the ground wire of the detection system are well separated, so that there are certain hidden dangers in the reliability of the detection system

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