2results about How to "Convenient flaw detection" patented technology

The application relates to the technical field of flaw detection devices, and discloses a pipeline flaw detection device which comprises a supporting table, a first support, a first rotating shaft, a first supporting wheel, a second support, a second rotating shaft, a second supporting wheel, a driving element and a detecting element. When used, the two first rotating shafts can rotate relative to the first support, so that the two first supporting wheels can rotate freely. The two second rotating shafts can rotate relative to the second support, so that the two second supporting wheels can rotate freely. Therefore, after the pipeline is placed on the two first supporting wheels and the two second supporting wheels, sliding friction can be converted into rolling friction, so as to facilitate the driving of the pipeline rotation. Under the driving of the driving element, the first rotating shaft and the two second rotating shafts can rotate synchronously, and then drive the two first supporting wheels and the two second supporting wheels to rotate synchronously, so that the automatic rotation function of the pipeline is realized. Then, the detecting element is cooperated to work, so that the whole surface of the pipeline can be detected, and the pipeline can be detected.

The application relates to the technical field of ultrasonic flaw detection, in particular to an ultrasonic flaw detection method and system based on pulse reflection, which has the technical scheme as follows: S1, collecting real-time vibration information and temperature information of a measured body; S2, constructing a propagation disturbance representation model based on the information in S1; S3, generating a compensation excitation pulse; S4, emitting the compensation excitation pulse; S5, collecting echo signals and obtaining residual signals through matched filtering and cross-correlation processing, and updating phase correction amounts and amplitude coefficients based on the signals and reference echoes to realize closed-loop compensation; the application collects vibration, temperature and geometric data through multiple sensors, constructs a propagation disturbance model and dynamically calculates phase correction amounts and amplitude weighting coefficients, compensates for environmental influences, generates a compensation pulse, emits and processes echo signals using an array transducer, realizes high-precision defect detection, adopts a closed-loop control mechanism, automatically adjusts flaw detection parameters based on residual estimation and feedback, and ensures stability.