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Current cathodic protection system for FPSO outer plate corrosion prevention and setting method thereof

A technology of current cathodic protection system, applied in the field of impressed current cathodic protection system, can solve the problems of incomplete corrosion resistance of outer plate and achieve the effect of avoiding corrosion

Pending Publication Date: 2020-11-03
SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a current cathodic protection system and its setting method for FPSO outer plate anticorrosion in order to overcome the defect that the external plate anticorrosion performance of the FPSO external plate anticorrosion is not complete enough in the prior art

Method used

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  • Current cathodic protection system for FPSO outer plate corrosion prevention and setting method thereof
  • Current cathodic protection system for FPSO outer plate corrosion prevention and setting method thereof
  • Current cathodic protection system for FPSO outer plate corrosion prevention and setting method thereof

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Embodiment 1

[0025] This embodiment provides a method for setting up a current cathodic protection system for anti-corrosion of the outer plate of the FPSO. refer to figure 1 , the setting method of the current cathodic protection system for corrosion protection of the FPSO outer plate comprises the following steps:

[0026] Step S101 , acquiring environmental data of the operating sea area of ​​the FPSO.

[0027] Step S102, obtaining the hull plate distribution data of the FPSO.

[0028] Step S103, generating arrangement information of electrodes according to the environmental data and the distribution data of the ship's outer plate, and the electrodes are used to generate the protection current.

[0029] During specific implementation, in step S101, the environmental data of the operating sea area of ​​the FPSO is acquired. In step S102, the hull plate distribution data of the FPSO is acquired.

[0030] In step S103, a three-dimensional model of the FPSO is constructed to obtain the ...

Embodiment 2

[0033] This embodiment provides a current cathodic protection system for anti-corrosion of the outer plate of the FPSO. The current cathodic protection system for anti-corrosion of the FPSO outer plate is set and generated by using the setting method of the current cathodic protection system for anti-corrosion of the FPSO outer plate of the present invention.

[0034] By obtaining the environmental data of the FPSO's operating sea area, the distribution data of the FPSO's hull is obtained, and the three-dimensional model of the FPSO is constructed to obtain the distribution of the FPSO's hull, and the electrode layout information is generated according to the environmental data and the distribution of the hull. Electrodes are used to generate protective current. Electrodes include auxiliary anode and reference electrode. The layout information includes the number and location of auxiliary anodes and reference electrodes. The layout information also includes the shielding are...

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Abstract

The invention discloses a setting method of a current cathodic protection system for FPSO outer plate corrosion prevention. The setting method comprises the following steps of obtaining environmentaldata of an FPSO operation sea area; acquiring ship outer plate distribution data of an FPSO; and generating arrangement information of electrodes according to the environmental data and the ship outerplate distribution data, wherein the electrodes are used for generating protection current. According to the method, through three-dimensional numerical simulation, reasonable partitioning of auxiliary anodes is achieved, the auxiliary anodes in different areas emit currents needed by the auxiliary anodes respectively, and therefore an outer plate is protected against corrosion more reasonably. By arranging the detachable auxiliary anodes and a detachable reference electrode, the operation of the detachable auxiliary anodes can be carried out through an underwater diver, the problem that an added cathode current protection system cannot be docked to be repaired and replaced due to long-term offshore operation of the FPSO is solved, and the long-acting protection performance of the added current cathode protection system is ensured.

Description

technical field [0001] The invention belongs to the technical field of an impressed current cathodic protection system for long-term anti-corrosion of an FPSO outer plate, and in particular relates to a current cathodic protection system for anti-corrosion of an FPSO outer plate and a setting method thereof. Background technique [0002] Due to the regular docking inspection and maintenance of general ships, the outer plate paint can be re-sprayed, and the outer plate paint will maintain good performance for a long time. Therefore, the impressed current cathodic protection system is usually arranged according to conventional experience. Due to the linear feature, it is impossible to guarantee the uniform protection of the entire ship's outer plate, and the protection period is short. Even the crew thinks that the operation and maintenance of the system are too troublesome, and the system may not be turned on during the voyage. However, for FPSO (offshore floating production ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/06C23F13/20
CPCC23F13/06C23F13/20
Inventor 赵魏刘俊红邢野崔秀达
Owner SHANGHAI WAIGAOQIAO SHIP BUILDING CO LTD