Steel pipe weld joint ultrasonic phased array detection device

Abstract

The invention discloses a steel pipe weld joint ultrasonic phased array detection device comprising a support frame and an ultrasonic flaw detector; the support frame comprises a first support frame and two second support frames, a servo motor and a digital signal processor are arranged on the first support frame, the second support frame comprises two T-shaped frames and a cross rod vertically fixedly connected between the T-shaped frames, a V-shaped frame is fixedly connected to the T-shaped frame, the output shaft of the servo motor is fixedly connected with the center of a rotary chuck, the rotary chuck is detachably connected with a steel tube, the other end of the steel tube is arranged on the V-shaped frame, the ultrasonic flaw detector is electrically connected with an ultrasonic probe which is internally provided with an ultrasonic phased array transducer, the ultrasonic flaw detector is electrically connected with the digital signal processor; and the digital signal processoris electrically connected with the servo motor. Convenience is brought for use, and the detection effect is good.

Description

technical field [0001] The invention relates to the field of weld seam flaw detection, in particular to an ultrasonic phased array detection device for steel pipe weld seam. Background technique [0002] With the acceleration of urban construction, the number of power transmission and transformation projects in urban areas has increased, and steel pipe towers for transmission lines with a small footprint and long operating life have been widely used. The steel pipe tower is mainly made of low-alloy high-strength steel. During the welding process, due to factors such as weather and human operation, welding defects such as air holes, lack of fusion, and cracks may occur. The existence of these welding defects destroys the integrity of the weld and the weak force Uniformity, easy to cause stress concentration at a certain point, reduce the mechanical properties of the welded joints, shorten the service life of the steel pipe tower, and in severe cases, quality accidents will oc...

AI Technical Summary

Problems solved by technology

[0003] Chinese utility model patent CN 208488411U discloses a weld detection device for steel structures, including a workbench, an ultrasonic detector, and a computer. A fixed rod is fixedly connected to the top of the fixed rod, and the top of the fixed rod is fixedly connected with the groove opened under the sliding rod. A slider is slidably connected to the sliding rod, and the side of the slider close to the fixed rod is fixed to the telescopic part of the electric telescopic rod. Then, the electric telescopic rod is fixedly connected to the slide rod, and a detection head is fixedly connected under the slider, and a camera is installed on the side of the slider near the bottom. This detection device has a high working efficiency, but the device detects steel pipes It is more difficult to weld the seam, and the motor will continue to rotate when the position of the weld defect is detected, requiring the staff to re-judge the position of the weld defect according to the waveform diagram on the ultrasonic detector and the computer image, which increases the workload and work difficulty

Chinese utility model patent CN 207611016 U discloses an automatic pipeline weld testing device, which includes an annular hoop track, a power device, a brake, a movable support, an alarm, an ultrasonic detector, a fixed end of a probe, and an ultrasonic detection probe. The hoop track is detachable and surrounds the pipeline, the power unit is set on the ring hoop track, the alarm, brake and ultrasonic detector are set on the power unit, one end of the movable bracket is connected to the power unit, and the other end is fixed with a probe The fixed end of the probe is provided with an ultrasonic probe; the ultrasonic probe is electrically connected to the ultrasonic flaw detector, the ultrasonic flaw detector is electrically connected to the brake, and the brake is electrically connected to the alarm. The automatic flaw detection and detection is accurate, but when there are many welds far apart on the steel pipe, the hoop needs to be removed and installed near the new weld to be tested, which is inconvenient to use

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