Radar main unit antenna sealing cavity group for sewage pipeline swing arm detection device

Abstract

A radar main unit antenna sealing cavity group for a sewage pipeline swing arm detection device comprises a single-channel main unit sealing cavity, a single-channel swing arm antenna sealing cavity and a flexible sealing connection device, wherein the main unit sealing cavity and the swing arm antenna sealing cavity are connected through the flexible sealing connection device and sealed through using sealing silica gel. According to the radar main unit antenna sealing cavity group, the independent design of the radar main unit antenna sealing cavity group can meet the requirements of replacing cavity groups for different frequencies, and meanwhile, the single-channel main unit sealing cavity and the single-channel swing arm antenna sealing cavity are separated and are connected by the flexible sealing connection device, so that the requirements of swing arm detection can be met, the requirements of different swing arm lengths can be met, the overall center can be lowered to the maximum extent, and overall stability is guaranteed.

Description

technical field [0001] The invention belongs to the field of urban underground sewage pipeline detection, and more specifically relates to a radar host antenna sealing cavity group used for a sewage pipeline swing arm detection device. Background technique [0002] Ground Penetrating Radar (GPR) can perform pipeline flaw detection efficiently and non-destructively. The ground penetrating radar uses the transmitter to transmit high-frequency radar signals to the pipeline wall, and the receiver receives the echo signal reflected by the pipeline wall, and uses the host computer to analyze and process it to identify pipeline diseases. Since the cross-section of the pipeline is circular, and the pipeline defects are mainly concentrated in the upper part, the flaw detection of the fan-shaped area on the upper part of the pipeline is particularly critical. The current pipeline radar detection and detection device mainly uses single or multiple radars to detect fixed azimuths. In or...

AI Technical Summary

Problems solved by technology

Since the cross-section of the pipeline is circular, and the pipeline defects are mainly concentrated in the upper part, the flaw detection of the fan-shaped area on the upper part of the pipeline is particularly critical. The current pipeline radar detection and detection device mainly uses single or multiple radars to detect fixed azimuths. In order to realize The detection of the fan on the top of the pipeline requires the use of a swing arm detection device that rotates the swing arm along the axial direction of the pipeline, and a radar is installed at the end of the swing arm for detection. On the other hand, radar antennas of different frequencies have different identification effects for different diseases , and there is often a large amount of sewage in the pipeline, which is easy to damage the electronic components of the detector, and the design of the swing arm will cause the problem of unstable center of gravity, and wear and tear of the antenna shell and the pipe wall, all of which increase the difficulty of pipeline detection

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