Variable diameter pipe external magnetic memory detection device

Abstract

The invention discloses a variable diameter pipe external magnetic memory detection device which belongs to the technical field of oil-gas pipeline detection. The variable diameter pipe external magnetic memory detection device comprises a variable diameter magnetic memory detection ring, a driving traveling mechanism and a data collection control mechanism, wherein the variable diameter magnet memory detection ring is connected with the driving traveling mechanism through a spring, and the data collection control mechanism is connected with the variable diameter magnet memory detection ring and the driving traveling mechanism through data lines. The variable diameter pipe external magnetic memory detection device provided by the invention provides an important means and a tool for long distance pipeline external nondestructive examination, plays an important role in discovering pipeline external wall microdefect and application concentration areas and guaranteeing the safely stable periodic operation of pipelines, and can produce remarkable economic benefit.

Description

technical field [0001] The invention relates to the technical field of oil and gas pipeline detection, in particular to a magnetic memory detection device outside a variable-diameter pipe. Background technique [0002] Petroleum is the blood of industry, and pipelines are an important way of oil and gas transmission. At present, most of the oil and natural gas exploited in my country contain corrosive media, and the proportion of imported crude oil containing highly active sulfur is also increasing. As for the pipelines that transmit corrosive media, their reliability decreases year by year as the service life increases. In recent years, my country's pipeline construction has advanced by leaps and bounds, involving many provinces and regions. Long-distance pipelines pass through many rivers and environmentally sensitive areas along the way. Gathering and transportation pipelines are getting closer to residential areas, and the negative impact of pipeline accidents is also in...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the inability to realize the detection of early defects and the full scan of the pipeline section for long-distance oil and gas pipelines, the present invention provides a magnetic memory detection device outside the variable-diameter pipe, including a variable-diameter magnetic memory detection ring, a driving mechanism and data acquisition Control mechanism; the variable-diameter magnetic memory detection ring is connected to the drive travel mechanism through a spring, and the data acquisition control mechanism is connected to the variable-diameter magnetic memory detection ring and the drive travel mechanism through a data line;

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