Installation process of bracelet type anode

An installation process and anode technology, which is applied in the field of offshore oil engineering, can solve problems such as coating damage, and achieve the effects of avoiding shedding failure, quick and convenient repair, and convenient operation

Active Publication Date: 2017-01-04
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Installation process of bracelet type anode
  • Installation process of bracelet type anode
  • Installation process of bracelet type anode

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Embodiment Construction

[0035] The present invention adopts the following installation steps to the bracelet type anode 3:

[0036] first step, such as figure 1 As shown, determine the installation position of the bracelet anode 3:

[0037] According to the design requirements, determine the installation position of the bracelet type anode 3 on the submarine pipeline body 1, and make a mark;

[0038] In the second step, the outer coating 2 on the brazing window portion on the pipe body 1 is stripped:

[0039] After the installation position of the bracelet-type anode 3 is determined, the outer coating 2 of the pipe body 1 at the 7 positions of the copper studs to be brazed is stripped off, that is, the outer coating 2 of the brazing window of the pipe body 1, generally not exceeding 40mm× 80mm, and use needle gun, paper grinding wheel and other tools to polish the brazing window; when stripping the outer coating 2 of the brazing window, a sample should be used to ensure the position where the outer...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F13/10B23K1/00B23K1/20
Inventor 鲁振兴刘永贞王志业王旭东孙有辉梁杰邢厚宽曹军马亚光田顺啟艾荣
Owner CHINA NAT OFFSHORE OIL CORP
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