Bushings, raws li qhov tseem ceeb ntawm cov rwb thaiv tsev thiab kev tiv thaiv cov khoom hauv lub zog thiab kev lag luam, ua lub luag haujlwm tseem ceeb hauv kev nyab xeeb ntawm cov neeg ua haujlwm nyob. ib qho kev rwb thaiv tsev tsis zoo lossis kev puas tsuaj tuaj yeem ua rau flashover, tawg, lossis txawm tias lub kaw lus kaw. Yog li ntawd, tsim kom muaj ib tug systematic thiab standardized txij nkawm mechanism yog ib tug tsim nyog txoj kev los xyuas kom meej cov kev ua tau zoo ntawm bushings nyob rau hauv tag nrho lawv lub neej voj voog.
Kev tu vaj tse yuav tsum pib nrog kev tshuaj xyuas ib ntus. Kev tshuaj xyuas yuav tsum npog lub bushing zoo li, rwb thaiv tsev nto, cov ntsiab lus sib txuas, thiab sealing mob, tsom mus rau qhov muaj cov kab nrib pleb, kev puas tsuaj, av nkos, paug tawm, thiab cov cim qhia ntawm to. Cov bushings sab nraum zoov yog qhov ua rau muaj kab mob hauv cov pa phem, tshuaj tsuag ntsev, av noo, lossis siab - av noo ib puag ncig; Kev tu lub voj voog yuav tsum raug tsim raws li qib kev ua qias tuaj ib puag ncig kom tsis txhob muaj teeb meem flashover. Kev tshuaj ntsuam xyuas yuav tsum tau ua ke nrog infrared thermography thiab ib feem ntawm qhov paug tawm kom pom tam sim ntawd cov cua sov txawv txav thiab ib feem ntawm qhov tshwm sim tshwm sim los ntawm kev sib cuag tsis zoo los yog kev tiv thaiv kev laus, kom ntseeg tau tias kev tshawb pom ntxov thiab kev tswj cov kev phom sij.
Kev ntxuav yog ib feem tseem ceeb ntawm kev tu. Rau cov av hauv av, maj mam so nrog cov ntaub so qhuav, mos lossis ib qho tshwj xeeb insulating nqus tsev vacuum kom tsis txhob ua puas lub glaze los yog puas txheej rwb thaiv tsev. Tsis txhob ntxuav hauv nag, daus, lossis qhov chaw muaj av noo siab kom tsis txhob ya raws los ntawm kev nkag mus rau hauv lub rwb thaiv tsev. Rau cov plooj (porcelain bushings), tsis txhob khawb nrog cov khoom tawv kom tiv thaiv kev puas tsuaj rau glaze qhov smoothness thiab rwb thaiv tsev kev ua tau zoo. Rau silicone roj hmab los yog composite insulating bushings, muaj zog acids, muaj zog alkalis, thiab organic solvents raug txwv los tiv thaiv cov khoom o los yog tawg. Thaum lub sijhawm tu, ua tib zoo saib xyuas kev ncaj ncees ntawm kev tiv thaiv -flashover txheej ntawm bushings, thiab rov ua dua raws li qhov xav tau raws li cov neeg tsim khoom xav tau.
Kev txheeb xyuas thiab kev saib xyuas yog qhov tseem ceeb rau lub bushing cov dej noo- pov thawj thiab seepage- pov thawj kev ua tau zoo. Roj- puv bushings yuav tsum muaj lawv cov roj qib thiab xim tshuaj xyuas tsis tu ncua. Txhua qhov dej xau lossis roj deterioration yuav tsum tau hais kom sai, thiab cov roj insulating tsim nyog yuav tsum tau ntxiv. Gas- puv bushings yuav tsum tau ceev thiab sealing xyuas kom tsis txhob muaj roj to los ntawm kev txo cov rwb thaiv tsev zog. Sealing rings, gaskets, thiab lwm yam yooj yim aging Cheebtsam ntawm bushing kev twb kev txuas rau cov khoom vaj tse los yog phab ntsa nkag yuav tsum tau hloov tsis tu ncua los xyuas kom meej ib tug nruj, gapless interface.
Kev ntseeg siab ntawm kev sib txuas ntawm kev sib txuas yog qhov tseem ceeb sib npaug. Tsis tu ncua xyuas qhov nruj ntawm kev sib txuas ntawm tus pas ntsuas hluav taws xob thiab lub busbar lossis cov hlau lead- tawm hlau, kom ntseeg tau tias tsis muaj qhov xoob, oxidation, los yog overheating discoloration, thiab rov qab mus rau qhov teev torque. Rau kev khiav hauj lwm tej yam kev mob uas muaj kev co los yog thermal expansion thiab contraction, xyuas cov hauj lwm zoo ntawm kev txhawb nqa, fixation, thiab buffering pab kiag li lawm los tiv thaiv qaug zog los yog tawg ntawm bushing qauv vim hais tias ntawm rov qab txhua yam kev nyuaj siab.
Kev ntsuam xyuas hluav taws xob tsim nyog yuav tsum tau ua thaum kho. Cov no suav nrog kev ntsuas kev tiv thaiv hluav taws xob, kev ntsuas hluav taws xob tsis zoo (tanδ), lub zog zaus tiv taus hluav taws xob thiab impulse tiv thaiv qhov ntsuas hluav taws xob, thiab lwm yam, txhawm rau txiav txim siab seb qhov rwb thaiv tsev puas ua tau raws li qhov yuav tsum tau ua. Rau cov bushings qub los yog bushings ua haujlwm nyob rau hauv ib puag ncig hnyav, lub voj voog ntawm kev sim yuav tsum tau ua kom luv luv, thiab bushings nrog cov txiaj ntsig tsis zoo yuav tsum tau kho tam sim lossis hloov.
Cov ntaub ntawv khaws cia thiab kev txheeb xyuas cov ntaub ntawv yog qhov tseem ceeb ntawm kev kaw - kev tswj xyuas lub voj voog. Cov ntaub ntawv ntxaws ntxaws yuav tsum tau khaws cia ntawm txhua qhov kev tshuaj xyuas, tu, kuaj, thiab kev saib xyuas kev ua haujlwm txhawm rau tsim cov ntaub ntawv kho mob bushing. Kev tsom xam yuav tsum tau siv los nkag siab txog cov qauv kev hloov pauv kev ua haujlwm, muab lub hauv paus rau cov xwm txheej -raws li kev saib xyuas thiab kev txiav txim siab hloov.
Cov kev tsim nyog ntawm cov neeg ua haujlwm thiab kev ntsuas kev nyab xeeb yog qhov tseem ceeb rau kev ua haujlwm zoo. Cov neeg ua haujlwm hauv kev saib xyuas bushing yuav tsum tau txais kev cob qhia kev cob qhia, paub txog cov khoom siv, kev sim, thiab cov txheej txheem kev nyab xeeb, thiab nruj me ntsis ua raws li cov txheej txheem xws li hluav taws xob hluav taws xob, ntsuas hluav taws xob, thiab kev teeb tsa hauv av thaum ua haujlwm. Lawv kuj yuav tsum siv cov rwb thaiv tsev tsim nyog thiab cov cuab yeej tiv thaiv los tiv thaiv tus kheej raug mob thiab cov khoom siv sib tsoo.
Nyob rau hauv luv luv, bushing txij nkawm yog ib tug systematic project integrating pom kev soj ntsuam, tu thiab tiv thaiv - fouling, sealing thiab ntxiv dag zog, kev sib raug zoo xyuas, thiab hluav taws xob kuaj. Tsuas yog los ntawm kev ua haujlwm zoo thiab kho kom zoo dua qub, thiab txuas ntxiv txhim kho cov kev daws teeb meem raws li ib puag ncig cov yam ntxwv thiab kev ua haujlwm, peb tuaj yeem ua kom ntseeg tau tias bushings tuav cov rwb thaiv tsev zoo thiab cov khoom siv kho tshuab nyob rau lub sijhawm ntev, muab cov khoom thaiv kev nyab xeeb thiab ruaj khov ntawm lub zog thiab kev lag luam.
