Full-immersion accelerated corrosion crushing device and method for submarine pipeline

Abstract

The invention discloses a full-immersion accelerated corrosion crushing device for a submarine pipeline. The full-immersion accelerated corrosion crushing device comprises a full-immersion accelerated corrosion simulation area and a deep sea pressure bin pressurization area, the full-immersion accelerated corrosion simulation area comprises an electrochemical workstation, an electrolysis test pool, a solution concentration control mechanism, a pipeline test piece placement mechanism and an electrode group, wherein the solution concentration control mechanism is used for adjusting the concentration of a corrosion medium in the electrolysis test pool, and the electrochemical workstation is used for providing corrosion current for the electrolysis test pool; the deep sea pressure cabin pressurization area comprises a pressure cabin, a test piece filling mechanism, a pressure control mechanism and an underwater video monitoring mechanism, the test piece filling mechanism is used for moving the pipeline test piece close to or out of the pressure cabin, and the pressure control mechanism is used for adjusting the pressure in the pressure cabin. The invention further discloses a submarine pipeline full-immersion accelerated corrosion crushing method based on the submarine pipeline full-immersion accelerated corrosion crushing device. According to the invention, a mode of firstly corroding and then pressurizing is adopted, the corrosion crushing process of the pipeline in an extreme environment is simulated, and the experiment precision is high.

Description

technical field [0001] The present invention relates to the field of marine accelerated corrosion simulation and pressurization simulation test, in particular to a submarine pipeline fully submerged accelerated corrosion crushing device and a submarine pipeline fully submerged accelerated corrosion crushing device based on the submarine pipeline fully submerged accelerated corrosion crushing device collapse method. Background technique [0002] At present, my country's marine economy is developing rapidly, and both the country and enterprises are paying more and more attention to seabed oil and gas resources. As an important equipment for transporting submarine oil and gas resources, submarine pipelines have also become the focus of marine equipment research. Corrosion is one of the main reasons for the failure of subsea pipelines and deserves to be studied in depth. According to relevant data surveys, the global economic loss caused by corrosion is huge every year, reachi...

AI Technical Summary

Problems solved by technology

However, due to the lack of effective means for engineering and experimental personnel to explore the dilemma of corrosion and collapse of submarine pipelines in the fully submerged area of ​​the ocean

At present, for a long time, the testers still use a small range of physical methods such as knife scraping and hammer smashing to simulate the actual marine corrosion results, and then use devices such as presses to carry out crushing experiments, and they have obtained results that deviate from the actual situation.

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