Synchronous control system for digital rays of circular welding seam on pipe

Abstract

The invention relates to a synchronous control system for digital rays of a circular welding seam on a pipe. In the system provided by the invention, a crawling track is fixed on the pipe from one side of the welding seam; a scanner with a ray detector is driven by a servo motor to scan along the welding seam; a magnetic induction synchronous control device is arranged outside the pipe; a magnetic induction receiver and a constant potential X ray machine which are installed on a crawler are arranged in the pipe; an industrial personnel computer is connected with a magnetic induction emitter through RS232; the magnetic induction emitter is connected with the magnetic induction receiver by emitting electromagnetic field signals and sends an exposure starting and exposure stopping command toa ray source controller PLC (Programmable Logic Controller) in the pipe; the industrial personnel computer is connected with a servo driver through an RS232 communication line; the servo driver connected with an encoder is connected with a direct current servo motor; a direct current power supply is connected with the servo driver, the direct current servo motor and the encoder and supplies electricity to the servo driver, the direct current servo motor and the encoder; one output of the PLC is connected with the input of a power supply controller; the output of the power supply controller isconnected with a ray pipe; and simultaneously, the output of the PLC is connected with the ray pipe.

Description

technical field [0001] The invention relates to a digital ray synchronous control system for pipeline girth weld detection, which relates to the fields of digital ray technology and pipeline system technology. Background technique [0002] In the pipeline girth weld digital ray inspection system, the scanner equipped with an area array detector detects the outer girth weld of the pipeline, and the ray source is located on the crawler inside the pipeline. Only when the digital acquisition of the area array detector is synchronized with the emission of the in-tube ray source can the accurate positioning of defects be guaranteed. However, in the pipeline digital radiography equipment that has been developed now, the digital acquisition of the area array detector and the synchronous control of the emission of the ray source in the pipeline are controlled manually, and the accuracy of defect positioning is poor, which is not conducive to the promotion and application in pipeline ...

AI Technical Summary

Problems solved by technology

However, in the pipeline digital radiography equipment that has been developed now, the digital acquisition of the area array detector and the synchronous control of the emission of the ray source in the pipeline are controlled manually, and the accuracy of defect positioning is poor, which is not conducive to the promotion and application in pipeline construction.

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