An Ultrasonic Flaw Detection System for Pipelines

Abstract

The invention discloses an ultrasonic flaw detection system used for a pipeline. The system includes a base seat. A through hole is formed on the base seat. Riser plates are fixedly mounted on an inner wall of one side of the through hole. Sliding holes are formed on the riser plates. A carrier block is mounted in the sliding holes in a sliding manner. One side of the carrier block extends to theoutside of a riser plate. A mounting seat is fixedly mounted on the one side of the carrier block, and is located above the base seat. A mounting hole is formed on the mounting seat. An ultrasonic flaw detector is mounted in the mounting hole. A plurality of mounting blocks are fixedly mounted at the bottom of the mounting seat. A pushing block is mounted at the bottom of each mounting block. A probe is mounted on one side of the pushing block. According to the system, adjustment on a position of the probe is facilitated, flipping of the probe is also facilitated, flaw detection on pipelines which are laid underground and erected in the air is facilitated, time and effort are saved, disassembly on the ultrasonic flaw detector is facilitated at the same time, maintenance is facilitated whena fault occurs, a structure is simple, and use is convenient.

Description

technical field [0001] The invention relates to the technical field of ultrasonic flaw detection, in particular to an ultrasonic flaw detection system for pipelines. Background technique [0002] Ultrasonic flaw detection is a method for inspecting parts defects by using ultrasonic energy to penetrate deep into the metal material and pass from one section to another section, reflecting at the edge of the interface to inspect parts defects. Inside the metal, when a defect and the bottom surface of the part are encountered, reflected waves will be generated respectively, and a pulse waveform will be formed on the fluorescent screen. The location and size of the defect can be judged according to these pulse waveforms. Ultrasonic waves have various wave modes when propagating in the medium, which is the most commonly used in inspection. The main ones are longitudinal waves, transverse waves, surface waves and plate waves. The longitudinal waves can be used to detect inclusions, ...

AI Technical Summary

Problems solved by technology

[0002] Ultrasonic flaw detection is a method for inspecting parts defects by using ultrasonic energy to penetrate deep into the metal material and pass from one section to another section, reflecting at the edge of the interface to inspect parts defects. Inside the metal, when a defect and the bottom surface of the part are encountered, reflected waves will be generated respectively, and a pulse waveform will be formed on the fluorescent screen. The location and size of the defect can be judged according to these pulse waveforms. Ultrasonic waves have various wave modes when propagating in the medium, which is the most commonly used in inspection. The main ones are longitudinal waves, transverse waves, surface waves and plate waves. The longitudinal waves can be used to detect inclusions, cracks, shrinkage tubes, white spots, Defects such as delamination; use shear waves to detect circumferential and axial cracks, scratches, pores in welds, slag inclusions, cracks, incomplete penetration and other defects in pipes; use surface waves to detect defects on castings with simple shapes Surface defects; use plate waves to detect defects in thin plates. After the pipeline is laid, it is necessary to use an ultrasonic flaw detector for flaw detection. In the prior art, most of the flaw detection is done by hand-held ultrasonic flaw detectors. It is time-consuming and labor-intensive to complete the flaw detection of the pipeline manually, so we propose an ultrasonic flaw detection system for pipelines to solve the above problems

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