An underwater robot for magnetic memory detection of submarine pipelines

Abstract

The invention provides an underwater robot for magnetic memory detection of submarine pipelines, mainly to solve the problem that conventional ROVs cannot detect the bottom of submarine pipelines, especially those lying on the seabed. It is characterized in that: the device includes a ROV body, a spray gun sand removal mechanism, a pipe-attached crawling and clamping mechanism, a variable diameter sensor detection mechanism, and a sediment smoothing mechanism; wherein, the ROV body serves as a carrier to provide support and power for other devices, and the spray gun The sand removal mechanism is used to clean the sediment on the pipe and the bottom, and the pipe-attached crawling clamping mechanism is used to clamp pipes of different diameters and realize secondary cleaning, so as to ensure that the universal roller on the claw is close to the pipe without crawling. Slipping; the variable-diameter sensor detection mechanism is used to realize the locking and engagement detection of the sensor for pipes with different diameters. The invention can realize the whole circumference and all-round detection of the submarine pipeline without dead angles under complex conditions such as relatively deep waters and sediment coverage.

Description

technical field [0001] The invention relates to an underwater pipeline magnetic memory detection device, in particular to an underwater robot capable of performing omnidirectional magnetic memory detection on a submarine pipeline. Background technique [0002] With the development of my country's offshore oil and natural gas industry, more and more oil pipelines will be laid in relatively deep waters such as the East my country Sea and the South China Sea. Oil pipelines are the lifeline of offshore oil transportation. Once a leak occurs, it will not only bring huge Therefore, timely and accurate detection and evaluation of submarine pipelines is extremely important. It is difficult for the existing ROV to detect the bottom of the submarine pipeline, especially the bottom of the pipeline lying on the seabed, and it is impossible to detect the whole circumference of the submarine pipeline without dead ends. Metal magnetic memory testing technology is known as one of the most p...

AI Technical Summary

Problems solved by technology

The existing ROV is difficult to detect the bottom of the submarine pipeline, especially the bottom of the pipeline lying on the seabed, and it is impossible to detect the whole circumference of the submarine pipeline without dead ends.

Metal magnetic memory testing technology is known as one of the most promising green non-destructive testing technologies in the 21st century. By detecting the magnetic field distribution on the surface of components, it can not only detect macroscopic defects in pipelines, but also quickly and conveniently detect abnormal stress concentrations and early hidden defects. However, conventional nondestructive testing cannot solve the problem of early diagnosis of metals before they are on the verge of damage. Therefore, magnetic memory testing technology provides strong technical support for oil and gas pipeline failure and life assessment. At the same time, magnetic memory testing does not require artificial magnetization devices. Non-contact detection, so easy to operate, great development potential and unique advantages in the field of submarine pipeline detection

However, due to the relatively short time for the generation and development of magnetic memory, it needs to be further improved in many aspects, especially in the field of detection and evaluation of submarine oil pipelines, which is still in its infancy. Combined with ROV technology, it forms a convenient, fast, compact, reliable performance, all-round and full-circle submarine pipeline inspection device

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