Support and hanger video testing device

Abstract

The invention discloses a support and hanger video testing device used for testing a support and hanger for installing a main heat transmission system pipeline branch pipe. The support and hanger video testing device comprises a carrying device, an extensible and retractable device arranged on the carrying device in an assembly manner and a camera device, wherein the extensible and retractable device comprises an extensible and retractable frame and a first drive mechanism, the extensible and retractable frame comprises a fixed end and an extensible and retractable end, the first drive mechanism is arranged on the carrying device, and the first drive mechanism drives the extensible and retractable frame to extend or retract; and the camera device comprises a panorama camera and a retraction jack, and the retraction jack is arranged at the extensible and retractable end and used for downwards putting and retracting the panorama camera in the gravity direction. The support and hanger video testing device can penetrate a support and hanger gap and branch pipe gaps, overcome the constraint of narrow space and automatically and comprehensively test the support and hanger.

Description

technical field [0001] The invention relates to the technical field of non-destructive inspection of the support and hanger of the pipe branch of the main heat transfer system of the heavy water reactor, in particular to a video inspection device for the support and hanger. Background technique [0002] In the heavy water reactor nuclear power plant, the support and hanger used to install the pipe branch pipe of the main heat transfer system. The pipe branch pipes are arranged in multiple layers in sequence, and each layer is provided with several branch pipes, and each branch pipe is provided with multiple support hangers. The support hangers on the top are arranged in a staggered manner, the support hangers on the two branch pipes separated by a pipe are located on the same straight line, the distance between the connected branch pipes is very small, and the support hangers are fixed by multiple pairs of bolts and nuts. Due to the heat transfer and vibration of the branch ...

AI Technical Summary

Problems solved by technology

Due to the compact structure of the support and hangers, the large number, the narrow space, and mutual blocking, the inspection device in the prior art cannot conduct a comprehensive inspection of the support and hangers

The support and hanger on the lowest branch pipe is far away from the pedestrian passage, and the support and hanger extending along the axial direction of the branch pipe is also far from the pedestrian passage. The inspection device cannot conduct in-depth inspection. In most cases, manual inspection is required, and the stability of manual inspection is poor. , which affects the reliability of the inspection data. There are many supports and hangers located in high-altitude areas. The manual inspection staff not only have a large workload, but also have high risks.

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