Ultrasonic nondestructive detection device and detection method thereof

Abstract

The invention discloses an ultrasonic nondestructive detection device and a detection method thereof, which is used for performing nondestructive detection on a tube to be detected. The ultrasonic nondestructive detection device comprises a mounting rack, guiding roller groups, supporting roller groups, an encoder and a probe assembly, wherein the mounting rack is of a frame structure; there are aplurality of guiding roller groups which are respectively connected to one side of the mounting rack and support the mounting rack in a rolling manner; the supporting roller groups are mounted on theframe-structured mounting rack, the supporting roller groups are arranged in parallel to the guiding roller groups, and the supporting roller groups and the guiding roller groups can be supported onthe inner wall of the tube to be detected in a cooperative manner; the encoder is connected with the guiding roller groups or the supporting roller groups in a matched manner so as to record displacement information of the guiding roller groups or the supporting roller groups; and the probe assembly is mounted on the mounting rack and used for detecting nondestructive information of the componentto be detected and transmitting the nondestructive information to a detection system. When detection is performed on the tube to be detected by the ultrasonic nondestructive detection device, the probe assembly is always close to the inner wall of the tube to be detected in the detection process, and the detection accuracy is high.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing, in particular to an ultrasonic non-destructive testing device and a detection method thereof. Background technique [0002] At present, due to the limitation of processing conditions, it is easy to cause defects or inhomogeneity in the workpiece formed by processing; therefore, non-destructive testing is required to provide information such as the size, location, nature and quantity of defects. Among them, when testing pipeline workpieces, it is necessary to coat the probe and / or the part to be tested with couplant to remove the air between the probe and the object to be tested, so that the ultrasonic wave can effectively penetrate The workpiece achieves the purpose of detection; however, the existing non-destructive testing device cannot stick to the inner wall of the tube to be tested at all times during the detection process, so that the probe is easily detached from the inner ...

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Problems solved by technology

[0002] At present, due to the limitation of processing conditions, it is easy to cause defects or inhomogeneity in the workpiece formed by processing; therefore, it is necessary to carry out non-destructive testing to give information such as the size, location, nature and quantity of defects

Among them, when testing pipeline workpieces, it is necessary to coat the probe and / or the part of the tube to be tested with a coupling agent to remove the air between the probe and the object to be measured so that the ultrasonic wave can effectively penetrate into the The workpiece achieves the detection purpose; however, the existing non-destructive testing device cannot always stick to the inner wall of the tube to be tested during the testing process, so that the probe is easily separated from the inner wall of the tube to be tested and the gap between the probe assembly and the inner wall of the tube to be tested is filled There is air, the filled air affects the detection accuracy, and the detection effect is poor

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