On-line detection system and detection method for pipe (bar) ultrasonic phased array
An ultrasonic phased array and detection system technology, applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, measurement devices, etc. The effect of detecting speed and improving detection accuracy
Active Publication Date: 2013-08-21
INST OF ACOUSTICS CHINESE ACAD OF SCI +1
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However, a single concave phased array transducer cannot perform full-coverage scanning of pipes or rods, let alone simultaneous scanning and online detection of longitudinal and transverse defects
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[0024] A pipe or rod ultrasonic phased array on-line detection system and detection method of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0025] figure 1 It is a schematic diagram of the composition of the ultrasonic phased array on-line detection system for pipes or rods of the present invention. Such as figure 1 As shown, the pipe or bar ultrasonic phased array on-line inspection system of the present invention includes: multiple concave ultrasonic phased array transducer probes, a high-voltage switch array, a multi-channel phased array transmitting and receiving system and a control system. By setting multiple concave ultrasonic phased array transducer probes around the pipe or rod, the concave ultrasonic phased array transducer probes are used to generate a phased array focused electronically controlled sound field, and at the same time, the high-voltage switch array is continuously swit...
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The invention provides an on-line detection system and an on-line detection method for pipes or bars ultrasonic phased array. The method comprises the following steps of: arranging a plurality of concave surface phased array energy converter probes on planes which are perpendicular to the center lines of the pipes or bars and at the position which forms a certain included angle with the center lines of the pipes or bars at the peripheries of the pipes or the bars; generating an electronic control sound field focused by the phased arrays by utilizing the concave surface phased array energy converter probes; and switching continuously and quickly by utilizing a high-voltage switch array, a multi-channel phased array transmit-receive system and a control system through a high-voltage switch array circuit, and controlling different array elements of the concave surface phased array energy converter to transmit and receive at different moments, so that phased array focusing acoustic beams rotate in the pipes or bars at high speed to realize dynamic focusing and scanning. By the system and the method, the 360-degree full-coverage scanning of the pipes or bars can be realized under the condition that the concave surface phased array energy converter probes are not moved, longitudinal and traverse defects can be scanned and detected, and the detection speed is improved greatly while the detection accuracy is improved.
Description
technical field [0001] The invention relates to an ultrasonic phased array on-line detection system and detection method for pipes or rods, which uses multiple concave phased array transducers, a high-voltage switch array, and a multi-channel phased array transmitting and receiving system to realize dynamic focusing, so that the focused acoustic The beam scans the pipe or bar quickly, and realizes online detection of longitudinal and transverse defects. Background technique [0002] During the production process of pipes or rods, due to various reasons, defects such as cracks will be formed inside them, which poses a great safety and quality hidden danger to safe production. Therefore, the quality inspection of pipes or rods is an important part of the inspection before leaving the factory. In the conventional ultrasonic testing technology, the pipe or bar needs to be continuously rotated while moving along the axial direction (the detection probe does not rotate), or the de...
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IPC IPC(8): G01N29/04G01N29/26
Inventor 张碧星师芳芳吴先梅宫俊杰章成广
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI