PAUT Auto Detection System For Pipe End

◆ Applied to the automatic detection of welded pipe and seamless pipe for petroleum and petrochemical fluid transportation, utilizing phased array technology to improve the system's acoustic beam density and accuracy, reduce the leakage detection, and comprehensively replace the conventional ultrasonic detection of various methods.

◆ The steel tube is rotated in place, the probe was driven by a manipulator, enters or rides upon the pipe and uses electronic scanning to incident a high-density acoustic beam on the pipe wall. Various focusing laws can be configured. Realize the detection of delamination and non-delamination defects

◆ API SPEC 5L (46th Edition) Specification for Pipeline Steel Pipe

◆ GB/T9711-2017 Steel Pipes for Pipeline Transmission System in Oil and Gas Industry

◆ SY/T6423.2-2013 Automatic Ultrasonic Inspection of Longitudinal and/or Transverse Defects in Welded Steel Pipe Welds

◆ SY/T6423.3 -2013 Automatic Ultrasonic Detection of Delamination Defects in Steel Strip/Steel Plate for Welded Steel Pipe

◆ SY/T6423.4-2013 Automatic Ultrasonic Detection of Delamination Defects in Seamless and Welded Steel Pipes and Tubes

◆ ISO 10893-8-2011 Automatic ultrasonic detection of delamination defects in seamless and welded steel pipes.

◆ ISO 10893-10-2011 "Automatic full peripheral ultrasonic flaw detection method for seamless and welded (except submerged arc welding) steel pipes for the detection of longitudinal and/or transverse defects".

◆ ASTM A578 Specification for Direct Beam Ultrasonic Inspection of Plain and Composite Steel Plates for Special Applications

◆ ASTM A435 Specification for Longitudinal Ultrasonic Inspection of Steel Plates

◆Pipe rotation in place, probe move in axial direction

◆C-scan clearly distinguishes the shape of defects;

◆ Reduce lateral pipe end blind area by data processing with B+C scan correlation;

◆Compensate the sensitivity difference of the same angle by software consistency, so that each channel of the same angle can detect the defect echo in same amplitude;

◆The same probe extracts different data through different focusing laws to achieve transverse and delamination defect detection.

Welded Pipe:

Pipe Diameter: Ф323mm-1420mm

Material: Q235-X100

Pipe length:8000mm-18300mm

Welding seam width:10mm-25mm

Welding seam height:0.5mm-3.5mm

Wall thickness: spiral steel pipe: 6.0mm-25.4mm

LSAW steel pipe:6.0mm-40.0mm

High Frequency Resistance Welded Pipe:4.0mm-21.0mm

Pipe straightness: less than 0.2% pipe length

Single pipe weight: 20 tons max.

Rotation speed: ≤30m/min

Maximum pitch of spiral welded pipe:2300mm

Spiral seam forming angle: 40°-75° (left-handed/right-handed)

Temperature of the tube body in the flaw detection zone: 0°C-70°C

Seamless pipe

Diameter of steel pipe: Ф168mm-Ф720mm

Material: High temperature alloy steel

Pipe length:8000mm-12000mm

Wall thickness: Spiral steel pipe:40mm-60mm

Pipe straightness: less than 0.2% pipe length

Single pipe weight: 20 tons max.

Rotation speed: ≤45m/min

Temperature of the tube in the flaw detection zone: 0℃-70°C

Pipe end blindness: longitudinal 0mm, transverse (backward) <3mm (including bevel), delamination 0

Detection Function: Longitudinal (bidirectional), Directional (bidirectional), Layered

Detection line speed: ≤30m/min

Detection pitch: ≤50mm

Probing leakage rate: 0%

False alarm rate: ≤3% (sample tube calibration)

Defect positioning error: ≤±25mm(axial)

Defect wave amplitude change: average of 8 acquisitions +25% (3dB~4dB)

Signal-to-noise ratio: ≥10dB

Effective operation rate of equipment: ≥99.8%

◆Using robot hand to replace the traditional multi-axis moving parts, the overall feeling is strong and the whole system is integrated.

◆Phased array imaging detection, can do B-scan, D-scan, S-scan and C-scan at the same time, defects image display, weld alarm easily rejected, end defects identification easier.

◆With the electronic angle deflection, the angle is adjusted by software, simple debugging for changing specifications, meets the seamless steel pipe and welded pipe end detection standards, reduces the mechanical design requirements, reduces debugging time, and improves production efficiency.

◆Phased array can carry out dynamic focusing of acoustic beam, the focusing depth is continuously adjustable, flexible and convenient, greatly improve the sensitivity and resolution. At the same time, the manipulator can realize inside and outside pipe flaw detection. It is convenient, flexible and efficient when replacing the inspected pipe model.

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