Qhov tawg tawg ntawm mandrel thaum lub sijhawm ua haujlwm ntawm cov khoom sib xyaw insulator feem ntau suav tias yog tshwm sim los ntawm kev sib khi tsis zoo ntawm kev sib txuas ntawm mandrel thiab cov khoom siv kho vajtse, uas ua rau tawg ntawm qhov tsis muaj zog ntawm cov nplaum sib txuas ntawm lub sealant thiab cov khoom siv kho mob, thiab cov kua qaub sab nraud ncaj qha nkag mus rau hauv qhov chaw ntawm lub mandrel los ntawm kev sib cais, maj mam corroding hla ntu ntawm mandrel. Txawm li cas los xij, los ntawm kev tshawb nrhiav thiab kev tshuaj xyuas ntawm ntau tshaj 30 qhov sib xyaw ua ke los ntawm cov chaw ua haujlwm txawv teb chaws, tsuas muaj 4 mus rau 5 qhov xwm txheej ntawm kev tawg ntawm qhov cuam tshuam ntawm kev sib txuas ntawm cov khoom thiab cov khoom siv kho vajtse, thiab qhov seem tshwm sim saum qhov txuas. ntawm cov tub ntxhais pas nrig thiab cov khoom siv kho vajtse, nyob rau hauv qhov chaw uas thawj lub kaus hnav yog tiv thaiv los ntawm lub tsho. Kev soj ntsuam anatomical ntawm ob peb kis ntawm brittle fracture ntawm composite insulators nyob rau hauv Tuam Tshoj kuj pom tau hais tias qhov tawg ntawm mandrel tsis tshwm sim nyob rau hauv lub exposed ib feem ntawm kev nyuaj siab concentration ntawm mandrel, tab sis tau nyob ze ntawm qhov kawg ntawm cov cuab yeej hlau nrog sheath foob. Nws tuaj yeem pom tau tias lub mandrel ntawm cov khoom siv hluav taws xob tsis tshua muaj qhov tawg vim qhov ncaj qha kev txiav txim ntawm sab nraud acid los nag.
Qhov sib xyaw insulator yog ib lub pas nrig ntev rwb thaiv tsev nrog me me capacitance ntawm theem, thiab qhov hluav taws xob faib ntawm qhov rwb thaiv tsev yog qhov tsis sib xws. Txawm hais tias muaj lub nplhaib sib npaug ntawm qhov kawg ntawm cov khoom xaim, nws qhov hluav taws xob gradient tseem loj heev, thiab cov khoom siv kawg yuav tsis tshwm sim corona thaum lub sijhawm ua haujlwm, tab sis lub zog teb yuav luag zoo ib yam li lub zog corona. Thaum kawg ntawm cov khoom xaim, muaj qhov siab tshaj plaws teb lub zog. Qhov kev ua haujlwm siab no ua kom nrawm nrawm ntawm qhov sib txawv ntawm cov dej saturated nruab nrab nyob rau hauv qhov nthuav tawm ntawm mandrel raws iav fiber ntau los ntawm epoxy resin nrog zoo permeability mus rau qhov tsis muaj concentration. Nyob rau hauv no txoj kev, cov kua qaub anhydride vulcanizer uas yog tsis yooj yim sua kom tusyees nyob rau hauv lub epoxy resin accelerates tus nkag mus ntawm dej molecules, thiaj li hais tias muaj dej nruab nrab nyob rau hauv ib ncig ntawm lub mandrel nrog siab teb lub zog.
Tsis tas li ntawd, lub corona ntawm cov khoom siv sab nraud kawg nyob rau hauv cov xwm txheej txawv txav los yog ntau yam overvoltage tej yam kev mob ua rau N2 nyob rau hauv cov huab cua nyob rau saum npoo ntawm lub sheath tsim NO2, yog li ntawd NO2, uas yog ntau tshaj 20 lub sij hawm siab tshaj N2 permeability, yuav kis tau los ntawm qhov saum npoo ntawm sheath mus rau sab hauv nrog qis concentration, thiab hnov mob nrog cov dej hauv nruab nrab kom tsim nitric acid. Vim yog qhov tsis tu ncua ntawm cov dej nruab nrab thiab nquag nkag mus thiab nthuav dav ntawm NO2, ntu ntu ntawm mandrel maj mam corroded thiab ua rau tawg. Nyob rau hauv cov ntaub ntawv insulators nrog brittle fractures nyob rau hauv tsev thiab txawv teb chaws, feem ntau ntawm cov tub ntxhais rods fractures tshwm sim nyob rau hauv qhov chaw nrog lub siab tshaj plaws hluav taws xob teb siv, uas kuj muaj peev xwm ua pov thawj lub credibility ntawm saum toj no tsom xam.
Tsis tas li ntawd, txawm hais tias cov khoom kawg foob zoo yog qhov zoo, yog tias muaj qhov tsis xws luag hauv cheeb tsam rwb thaiv tsev lossis qhov poob ntawm cov khoom xaim, nws yuav feem ntau khaws cov dej ntws nruab nrab thiab permeate lub mandrel nto los ntawm cov dej vapor los ntawm kev ua haujlwm zoo. lub tsho. Nyob rau tib lub sijhawm, cov roj NO2 tsim nyob rau hauv corona feem ntau diffuses los ntawm lub plhaub los yog qhov tsis xws luag lossis kev puas tsuaj rau saum npoo ntawm mandrel, reacts nrog cov dej nruab nrab uas twb muaj lawm los tsim nitric acid, thiab corrodes lub mandrel ntawm lub peev xwm siab. , ua rau tawg.
Cov saum toj no yog cov nkig tawg ntawm cov khoom siv insulator, Kuv vam tias nws yuav pab tau koj! Yog tias koj xav yuav cov khoom zoo insulator tuaj yeem tiv tauj peb!
