全尺寸电绝缘涂层的研制Full scale electrical insulation coating development

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1、FusionEngineeringandDesign69(2003)303
/307www.elsevier.com/locate/fusengdesFullscaleelectricalinsulationcoatingdevelopmentaa,aabL.F.Moreschi,P.Rossi*,M.Agostini,S.Storai,A.T.PeacockaENEA,C.R.Brasimone,PB1,40032Camugnano(BO),ItalybEFDA-CloseSupportUnit,B

2、oltzmannstrasse2,D-85748Garching,GermanyAbstractAde-mountablemechanicalsystemhasbeendesignedbyITER-ITfortheattachmentandtheremotehandlingoftheblanketmodules.Themodulesareattachedtothesupportingstructurebyboltingusingfourflexibleradialsupports(cartridges

3、)whichareelectricallyinsulatedfromthevacuumvesseltoavoidhigh-valuecirculatingcurrents.Thehydrauliccoaxialconnectorsalsoelectricallyconnecttheblankettothemoduleandstrapsareusedtoprovideanelectricalpathforhalocurrents.Coatingthecontactsurfaceswithaluminap

4、rovidestherequiredelectricalinsulation.TheobjectiveofthisworkwastotesttheperformanceoftheelectricalinsulationcoatingsspecifiedfortheITERblanketattachmentdesign.Thetestingcampaignrequiredthemanufactureofmock-upsandtheapplicationofaluminacoatingbyplasmasp

5、raytechnique.Theflexibleattachmentsystemwasmechanicallytestedwitha500kNpush/pullloadfor1000cycles.Anotherassemblywasthermallycycledbetween150and3008Cfor1000timesininertgasatmosphereandthenmechanicallycycled.Theactivityincludedmechanicaltestingoftwopairs

6、ofwedgedcoatedkeysunderanimpactloadof500kNapplied1000times.Nofailuresanddamagesoccurredonthealuminacoatings,whichpreservedgoodinsulatingandmechanicalpropertiesconfirmingsuitabilityfortheITERblanketsystem.#2003ElsevierB.V.Allrightsreserved.Keywords:Blank

7、etmodules;Aluminacoatings;Plasmaspraytechnique1.Introductionplasmaspray(APS)techniqueandthefollowingtestingcampaignconsistedinmechanicalandTheobjectiveofthisactivitywastotestthethermaltestingofthemock-upsfortheconditionsperformanceoftheelectricalinsulat

8、ioncoatingsapplicableinITER.specificallyforthede-mountablemechanicalsys-Theactivityincludedalsoamechanicaltestoftemfortheattachmentandtheremotehandlingoftwopairswedgedkeys,toverifythebehaviouroftheinternationalthermonuclearexperi