X-ray pipeline crawler is a device for omnidirectional X-ray filming of pipeline butt welds in pipeline laying engineering. Use a traction trolley to bring the circumferential X-ray flaw detector into the pipeline. In non-destructive tests for long-distance pipelines, traditional pipeline crawlers use radioactive isotopes as the instruction resources which emit x rays harming human and environment to a certain extent. To solve this problem, a new kind of operational control system with magnetic positioning sensors was developed. The new crawler possesses a strong anti-interference ability, practicability, stability, safety and environmental protection.
When the ray emission window of the ray machine is aligned with the position of the weld, through the remote control, make the ray machine butt the weld of the pipe according to the set exposure voltage and exposure time Make an exposure. Because the circumferential X-ray flaw detector is used to expose the center of the pipeline, the focal length is short, and the single-wall projection, the exposure of the entire weld can be completed in one exposure. Compared with the method of directional ray machine projecting on the external double wall, the working efficiency can be Increase dozens of times. The movement of the crawler inside the pipeline is controlled by the command source or radio control box outside the pipeline to complete the forward, backward, stop, exposure and other actions.
