大型浮式生產(chǎn)儲油船（FPSO）船體30年壽命陰極保護(hù)系統(tǒng)研究.pdf

1、大連理工大學(xué)碩士學(xué)位論文大型浮式生產(chǎn)儲油船（FPSO）船體30年壽命陰極保護(hù)系統(tǒng)研究姓名：李明高申請學(xué)位級別：碩士專業(yè)：船舶與海洋工程指導(dǎo)教師：黃一20080401大型浮式生產(chǎn)儲油船(FPsO)船體30年壽命陰極保護(hù)系統(tǒng)研究ResearchonCathodicProtectionSystemdesignedfor30yearsofHullofFPSOAbstract111einherentlimitationofcurrentdesig

2、ntechnologyofcorrosionpreventioncanbeovercomebyusingthemodemtechnologybasedonnumericalsimulationcalculationThemodemtechnologycallalsomakethedesignofcorrosionpreventionforwholelirebecomemorereliableInthethesis，for200，000t

3、FPSO’SHullPlate，thesimulationcalculationofitscompositecorrosionpreventionsystemduringthedynamicprocessinthewholelifeiscarriedoutThecalculationisbasedonthenumericalsimulationtechnologyandtheboundaryconditionsareconfmnedbv

4、DNVcriterionandotherrelativetechnicaldataItCanbeconcludedasfollows：(1)Theinherentlimitationofcurrentdesignareunavoidableinthelong1ife(morethantenyears)compositecorrosionpreventionsystemdesign(2)Inthecompositecorrosionpre

5、ventionsystemforobjectwhichiScoveredwithahugesurfaceareaandincludesasacrificialanodesystemwithallenormousquantity，theprotectionpotentialonthesurfaceoftheprotectedobjectcanbeeffectivelyimprovedbyoptimizingthecollocationof

6、sacrificialanodesThusthecorrosionpreventionstatewillbegreatlyimproved(3)BecauseofthenonuniforlTldistributionofprotectioncurrentonthesurfaceofprotectedobject，thereisanobviousdifferencebetweenthesuggestedprotectioncurrentd

7、ensityandtheactualaverageprotectioncurrentdensity。(4)ThemodemcorrosionpreventiondesignbasedonnumericalsimulationcaneffectivelyrepresentthedynamicbehaviorofthecompositecorrosionpreventionsystemduringthewholelifeThustheopt

8、imizeddesignofthecompositecorrosionpreventionsystemduringthewholelifewillcometrueThemethodshowsawideapplicationpotentialKeyWords：CompositeCorrosionPreventionSystem；DesignofCorrosionPreventionduringWholeLife；Distributiono