Pipeline magnetic flux leakage internal detection device capable of performing variable diameter measuring and variable diameter moving actively

Abstract

The invention provides a pipeline magnetic flux leakage internal detection device capable of variable diameter measuring and variable diameter moving actively. The pipeline magnetic flux leakage internal inspection device comprises a variable diameter magnetic flux leakage detection system, a variable diameter support system, walking motion systems, a system control module, a system power module and a system recording module, wherein the system control module, the system power module and the system recording module are installed in the variable diameter support system, the variable diameter magnetic flux leakage detection system is sleeved outside the variable diameter support system, the walking motion systems are installed at the two ends of the variable diameter support system, the system power module can supply power to the whole device, and the system recording module records sensing results and mileage results. The internal detection device has the functions of active variable diameter measurement, variable diameter support and active movement walking, the overall structure is compact, the system function is diversified, one machine has multiple functions, the device adapts to pipes with different diameters, so that the overall adaptability is stronger, the detection coverage area is large, and the measurement results are more precise, and the walking motion system can achieve independent power walking of front and rear wheels without the need of an external power traction device.

Description

technical field [0001] The invention relates to the technical field of pipeline magnetic flux leakage detection equipment, in particular to a pipeline magnetic flux leakage internal detection device that can actively change diameter measurement and change diameter movement. Background technique [0002] Large and long oil and gas pipelines undertake the task of transporting energy substances such as oil and natural gas, and play a huge role in national economic construction. However, due to working in harsh environment and high-pressure medium for a long time, corrosion holes, cracks and other potential hole defects often appear in the pipeline. It will cause major accidents such as explosion and fire, and seriously threaten people's lives and property safety. [0003] At present, the commonly used pipeline defect detection methods mainly include electromagnetic ultrasonic testing, piezoelectric ultrasonic testing and magnetic flux leakage testing. Among them, the magnetic...

AI Technical Summary

Problems solved by technology

However, this device is a non-powered device and needs to be driven by an external pipeline mobile robot to achieve passive walking

On the other hand, universal wheels rely on spring devices to passively attach to the inner wall of the pipe, which often leads to problems such as unreliable fit and slipping, and its application scenarios are limited

Images