Bracelet anode installation technology

Abstract

A bracelet anode installation technology comprises the following installation steps: 1, determining the installation position of a bracelet anode, and marking; 2, stripping an outer coating on the position of a brazing window of a pipe body; 3, brazing to fix a copper brazing nail; repairing the outer coating on the position of the brazing window; 5, assembling and fixing the bracelet anode; 6, connecting an upper and a lower opposite anode half watts with a bolt and a nut attached to an anode core; 7, connecting a conduction wire with a pre installed threaded copper nail and a matched nut to realize electric connection of the bracelet anode and a subsea pipeline; and 8, performing visual inspection of the bracelet anode to ensure that in the installation process, no crack and any other damage of the bracelet anode is produced. The bracelet anode installation technology solves the problem of damage to coatings of the pipe body of subsea pipelines in the installation process, the position of the brazing window can be fast and reliably repaired, the scratching and falling-off risks of the anode passing through a stinger roller can be effectively overcome, and the installation process is more convenient and high-effect.

Description

technical field [0001] The invention relates to an anode installation process, in particular to a bracelet-type anode installation process for deep-water submarine pipelines, and belongs to the field of offshore oil engineering. Background technique [0002] Sacrificial anode cathodic protection is one of the important means of anti-corrosion of submarine pipelines, and the bracelet-type anode installed on the submarine pipeline can provide durable and effective protection for submarine pipelines. Bracelet-type anodes are generally installed in the operation line of the pipe-laying ship along with the laying of submarine pipelines. There are two processes for the installation of traditional submarine-type bracelet-type anodes: one is to extend the paired anode half tiles through the axis of the submarine pipeline. The anode core flat steel is directly connected to the pipe body of the submarine pipeline by manual arc welding and fillet welds. Due to this installation proces...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to overcome the above-mentioned shortcomings existing in the prior art, and to provide an improved installation process of the bracelet-type anode, which realizes the non-melting connection between the anode and the base material of the submarine pipeline through bolts, which not only solves the problem of installation The problem of damage to the coating of the submarine pipeline during the process enables the brazing window to be quickly and reliably repaired; moreover, since the bolt torque is determined by simulating the ultimate stress of the anode, it effectively overcomes the problem when the anode passes through the rollers of the stinger. No risk of scratching off; at the same time, making the installation process more convenient and efficient

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