A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The evaluation of the bouncing model of caliper pig’s detection arm in subsea gas pipelines
Caliper pigs are widely used for measuring pipeline internal geometry and detecting anomalies, such as dents, wrinkles and flat spots. Due to its excellent transport capacity, caliper pig is more widely used in subsea gas pipelines than smart pig, such as Magnetic Flux Leakage (MFL) pig or Ultrasonic Test (UT) pig. In this article, the bouncing process of detection arm of caliper pig across convex defect is studied. And then, the influence of the collision between the detection arm and deformation defect, as well as the defect shape on the bounce, is discussed. Based on that, a bouncing theoretical model of the detection arm is developed for analyzing the bouncing phenomenon. Furthermore,the bouncing process that the detection arm moves across the convex defect with different velocities and different initial spring forces is studied by experimental method. The bouncing model calculation value is approximately equal with the experimental value, verifying the validity of the bouncing model. The bouncing model has a great significance for caliper pig evaluating the pipeline convex defect.
The evaluation of the bouncing model of caliper pig’s detection arm in subsea gas pipelines
Caliper pigs are widely used for measuring pipeline internal geometry and detecting anomalies, such as dents, wrinkles and flat spots. Due to its excellent transport capacity, caliper pig is more widely used in subsea gas pipelines than smart pig, such as Magnetic Flux Leakage (MFL) pig or Ultrasonic Test (UT) pig. In this article, the bouncing process of detection arm of caliper pig across convex defect is studied. And then, the influence of the collision between the detection arm and deformation defect, as well as the defect shape on the bounce, is discussed. Based on that, a bouncing theoretical model of the detection arm is developed for analyzing the bouncing phenomenon. Furthermore,the bouncing process that the detection arm moves across the convex defect with different velocities and different initial spring forces is studied by experimental method. The bouncing model calculation value is approximately equal with the experimental value, verifying the validity of the bouncing model. The bouncing model has a great significance for caliper pig evaluating the pipeline convex defect.
The evaluation of the bouncing model of caliper pig’s detection arm in subsea gas pipelines
Li, Xiaolong (author) / He, Renyang (author) / Meng, Tao (author) / Zhang, Shimin (author)
2019-08-01
10 pages
Article (Journal)
Electronic Resource
English
Upheaval Buckling of Heated Subsea Pipelines
| British Library Conference Proceedings | 1995
Buckle interaction in deep subsea pipelines
| Online Contents | 2013
Hyperbaric chamber test of subsea pipelines
| Online Contents | 2013
| European Patent Office | 2018