1. Kev soj ntsuam ntawm hluav taws xob thiab ib puag ncig kev ntxhov siab ntawm cov khoom siv insulators hauv kev ua haujlwm
Nyob rau hauv kev sib koom ua ke ntawm hluav taws xob thiab ib puag ncig kev ntxhov siab, qhov chaw qhuav siv arc tuaj yeem ua rau xeb lossis cim cov khoom, dej, hluav taws xob corrosion, tshuaj lom neeg ntawm ib puag ncig tuaj yeem ua rau hluav taws xob puas tsuaj ntawm cov khoom siv roj hmab silicone. Lub hydrophobicity poob ntawm composite insulators nyob rau hauv lub lag luam yog tsuas yog tshwm sim los ntawm hluav taws xob aging thiab manufacturing defects. Kev tsom xam tshwj xeeb yog raws li hauv qab no:
(1) Cov cua tshuab los ntawm cov hlua hluav taws xob sib xyaw kom tsim cov dej ntws tawm, thiab cov plua plav hnyav thiab lwm yam khoom qias neeg poob rau saum npoo ntawm lub rwb thaiv tsev. Nyob rau hauv kev sib xyaw ua ke ntawm ultraviolet lub teeb thiab lub zog txhua yam, qhov chaw yog me ntsis corroded, nto roughness nce, thiab pom tsis pom zoo tawg yog tsim. Cov txheej qias neeg yog txuas rau saum npoo.
(2) Tsis tu ncua diffused low molecular polymer migrates saum npoo ntawm lub kaus thiab implanted mus rau hauv lub qias neeg txheej, yog li ntawd cov khoom qias neeg yog them nrog ib tug nyias nyias silicone thiab oxygen molecular polymer, thiab cov nto tswj hydrophobicity.
(3) Nyob rau hauv huab cua phem, xws li pos huab, dew, high humidity thiab lub teeb los nag, me me tee dej tuaj yeem tsim rau ntawm qhov chaw insulator. Txawm li cas los xij, nyob rau hauv qhov chaw uas muaj kev yaig loj heev, cov dej me me ua ke nrog cov ntaub ntub dej ntawm cov plua plav los ua cov dej phwj tuaj, uas dhau los ntawm cov txheej txheem silico-oxygen polymer txheej los tsim cov txheej txheem conductive thiab txhawb cov xau tam sim no los ntawm kev hloov pauv mus rau kev ua haujlwm. .
(4) Vim yog qhov tsis sib xws thiab ntub dej ntawm txheej qias neeg, cov khoom siv hluav taws xob hauv zos muaj ntau qhov hluav taws xob tau tsim rau ntawm qhov chaw insulator, thiab yog li cov ntsiab lus zoo li paug tshwm sim.
(5) cov paug paug siv cov txheej nyias nyias ntawm cov polymer nyob ib ncig ntawm cov dej me me thiab ua rau cov dej tsis zoo ntawm silicone roj hmab.
(6) Kev puas tsuaj ntawm hydrophobicity ntawm qhov chaw ua rau cov hlaws dej los ua cov yeeb yaj kiab dej. Ib txheej txuas txuas txuas ntxiv yog tsim, uas ua rau kom cov xau tam sim no ntxiv.
(7) Cov cua sov uas tsim los ntawm cov xau tam sim no ua rau thaj chaw qhuav ntawm qhov chaw. Qhov saum npoo yog cov khoom siv hluav taws xob uas muaj kev tiv thaiv siab thiab lub ntsej muag hydrophobic uas muaj cov hlaws dej, yog li qhov kev faib hluav taws xob tsis sib xws.
(8) Kev faib tawm tsis sib xws yog tsim nyob rau hauv qhov sib txawv kom qhuav, yog li arc tawm yuav raug tsim tawm thiab qhov chaw yuav plam hydrophobicity ntxiv. Thaj chaw qhuav yuav txuas ntxiv mus. Tshem tawm thiab ib nrab arc yuav ua rau muaj kev puas tsuaj loj ntawm cov khoom siv hluav taws xob, ua rau kev laus ntawm daim tiab saum npoo.
(9) Nyob rau lub sijhawm qhuav ntev yam tsis muaj qhov tso tawm ntawm cov khoom siv hluav taws xob, cov roj hmab silicone yuav rov qab los ntawm nws cov hydrophobicity, thiab lub sijhawm rov qab los ntawm tus kheej feem ntau xav tau 6-8 teev.
(10) Yog tias qhov tso tawm ntxiv rau ntawm qhov chaw insulator ua rau kev laus ntawm silicone roj hmab, qhov kub thiab txias hauv zos yuav raug tsim. Nyob rau hauv cov xwm txheej hnyav, qhov kub ntawm cov cua sov yog nyob nruab nrab ntawm 260-400 degree, thaum lub siab tshaj plaws kub ntawm cov khoom siv silicone roj hmab tsuas yog 300-400 degree . Yog li ntawd, cov hmoov dawb dawb yuav tshwm sim nyob rau saum npoo ntawm cov insulators uas nquag tawm, uas yog cov tshuaj tiv thaiv tshiab ntawm qhov kub thiab txias. Cyclic tso tawm nws thiaj li ua rau kev puas tsuaj tas mus li ntawm insulator nto thiab tsis tas li ntawm hydrophobicity, uas ua rau poob ntawm cov pa phem tsis zoo ntawm cov khoom siv insulators.
2. Hydrophobicity poob los ntawm kev laus zuj zus los ntawm kev tsim cov khoom sib xyaw insulators
Kev tswj cov pa phem flashover hauv cov txheej txheem tsim khoom ntawm cov khoom siv insulators feem ntau muaj hydrophobicity thiab corrosion kuj. Hydrophobicity thiab hydrophobic self-recovery yog thawj zaug ze ntawm antifouling flashover, zoo hydrophobicity, yuav ua rau cov pa phem txheej tsis kam yog siab, to tam sim no me me, muaj kuab paug xob laim siab tuaj yeem txhim kho. Tom qab hydrophobicity poob thiab poob ib ntus, lub kaus tsho lub tsho yuav tsum muaj peev xwm tiv taus txoj siv tawv qhuav tsis muaj kab, tsis muaj yaig, uas yog qhov tseem ceeb thib ob rau kev tiv thaiv fouling flashover. Cov duab thiab tsim loj ntawm daim tiab luv yuav cuam tshuam rau kev ua haujlwm ntawm hydrophobic thiab to tam sim no. Kev tshawb fawb thiab tsim nyog tsim ntawm cov duab thiab qhov loj me yog tus yuam sij thib peb rau kev tiv thaiv fouling flashover.