Simulation of the Effect of a Metal Vapor Arc on Electrode Erosion in Liquid Metal Current Limiting Device-中国Betway体育网页登陆

摘要 Theeffectofarcplasmaonelectrodeerosioninaliquidmetalcurrentlimiter(LMCL)isstudied.Basedonasimplifiedtwo-dimensionalmagnetohydrodynamicmodel,theelongatedGaInSnmetalvaporarcanditscontractionprocessinaliquidmetalcurrentlimiteraresimulated.Thedistributionsoftemperature,pressureandvelocityofthearcplasmaarecalculated.Thesimulationresultsindicatethattheelectrodeerosionismainlycausedbytwohightemperaturegasjetflowsarisingfromthepressuregradient,whichisaresultofthenon-uniformarctemperaturedistribution.Thegasflows,whichactasjetsontotheelectrodesurface,leadtotheevaporationoftheelectrodematerialformthesurface.Aredesignstructureoftheelectrodeisproposedandimplementedaccordingtotheanalysis,whichgreatlyincreasedtheservicelifeoftheelectrode.

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Simulation of the Effect of a Metal Vapor Arc on Electrode Erosion in Liquid Metal Current Limiting Device

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