Insulators yog cov khoom tseem ceeb hauv txhua qhov kev sib kis kab ke. Cov khoom siv no yog siv los txhawb thiab cais cov khoom siv hluav taws xob thiab tiv thaiv kev ntws tam sim no ntawm lawv thiab lwm cov qauv hauv av xws li cov ncej hlau thiab cov yees. Ib qho kev tsim hluav taws xob tsim nyog yuav muab cov rwb thaiv tsev txuas ntxiv thiab txhim khu kev qha thoob plaws hauv lub neej ntawm cov kab ke uas ua rau kev xa hluav taws xob mus rau qhov ntev thiab dhau qhov nyuaj. Hauv tsab xov xwm no, peb yuav ua tib zoo saib seb cov insulators raug xam li cas, hom insulators muaj, thiab yog vim li cas xam cov insulators yog ib qho tseem ceeb rau kev lag luam kis kab mob.
Xam cov Insulators
Lub luag haujlwm tseem ceeb ntawm lub tshuab hluav taws xob yog los tiv thaiv cov hluav taws xob tam sim no los ntawm kev ntws los ntawm kev tsis xav tau thiab txoj haujlwm. Txawm li cas los xij, nyob rau hauv tus txheej txheem ntawm kev ua li ntawd, cov insulators khaws cov nqi hluav taws xob, uas yog hu ua qhov tshwm sim saum npoo ntawm insulators. Qhov tshwm sim no tshwm sim feem ntau vim yog polarization ntawm cov nyob sib ze molecules nyob rau hauv cov khoom siv insulator thiab tuaj yeem cuam tshuam rau cov khoom hluav taws xob hluav taws xob.
Txhawm rau xam cov insulator tsim nyog rau cov kab sib kis, nws yog ib qho tsim nyog yuav tsum xyuas kom meej tias qhov kev xaiv insulator tsim nyog rau qhov voltage, zaus, ib puag ncig, thiab cov loads uas yuav tau ntsib thaum lub sijhawm nws lub neej. Lub rwb thaiv tsev yuav tsum tau tiv taus ntau yam ntawm hluav taws xob thiab kev ntxhov siab ntau xyoo, suav nrog corona tawm, inrush tam sim no, surge voltage, cua load, thiab dej khov.
Thawj kauj ruam hauv kev txiav txim siab txoj cai insulator yog xam cov khoom hluav taws xob uas lub insulator yuav tsum tau dais. Cov hluav taws xob thauj khoom yog txiav txim siab los ntawm kev xam qhov siab tshaj plaws voltage, tam sim no, thiab lub zog nruab nrab uas yuav tsum tau xa. Lub insulator yuav tsum muaj peev xwm tswj tau cov loads no yam tsis tau ua tsis tiav, txawm tias thaum lub sijhawm thauj khoom siab tshaj lossis cua daj cua dub. Ntau qhov kev suav tuaj yeem ua tau los kwv yees qhov sib txawv ntawm cov conductors thiab tus naj npawb ntawm cov insulators xav tau rau ib qib voltage.
Thaum qhov kev suav thawj zaug no tiav lawm, qhov thib ob uas yuav tsum tau muab rau hauv kev txiav txim siab yog qhov chaw ib puag ncig ntawm kab. Qhov chaw ntawm cov kab sib kis yuav muaj kev cuam tshuam rau qhov zoo ntawm cov insulator yuav ua li cas. Cov av noo, qhov kub thiab txias, ntsev, thiab lwm yam tuaj yeem cuam tshuam rau kev ua haujlwm ntawm insulator. Yog li, engineers xav txog cov yam ntxwv no thiab xaiv cov khoom siv zoo rau cov insulator.
Thaum kawg, lub rwb thaiv tsev lub zog txhua yam yuav tsum tau ntsuas rau nws lub peev xwm los tiv thaiv ib qho kev thauj khoom sai lossis kev ntxhov siab los ntawm huab cua lossis tib neeg yuam kev. Feem ntau, cua loading thiab dej khov loading yog ob hom kev ntxhov siab ntawm txhua yam uas lub insulator yuav ntsib. Cov kws tsim hluav taws xob siv ntau yam cuab yeej thiab txoj hauv kev los suav cov tshuab hluav taws xob ntawm cov insulators thiab xaiv qhov zoo tshaj plaws insulator.
Hom Insulators
Muaj ntau ntau hom khoom siv insulator siv hauv cov kab sib kis. Cov no suav nrog iav, porcelain, polymer thiab hybrid insulators.
Porcelain insulators yog hom qub tshaj plaws ntawm insulators thiab tseem siv dav hauv niaj hnub no. Lawv yog tsim los ntawm kev sib xyaw ntawm av nplaum, feldspar, thiab quartz. Cov insulators no zoo kawg nkaus thiab tuaj yeem tiv taus huab cua hnyav, nrog rau qhov kub thiab txias.
Cov iav insulators kuj tseem muaj thiab feem ntau yog siv rau cov kab hluav taws xob tsawg lossis kev sib txuas lus. Lawv yog tsim los ntawm tempered iav thiab yog ntau resistant rau corrosion thiab xeb.
Polymer insulators yog hom tshiab tshaj plaws ntawm insulators thiab nrov heev vim lawv lub teeb yuag thiab txhim khu kev qha. Lawv kuj tseem ruaj khov thiab tuaj yeem tiv taus huab cua.
Hybrid insulators yog kev sib xyaw ua ke ntawm ob lossis ntau dua cov ntaub ntawv insulator. Piv txwv li, ib lub cuab yeej tuaj yeem ua rau ob qho tib si porcelain thiab polymer insulators, nrog rau txhua tus siv rau kev siv tshwj xeeb.
Qhov tseem ceeb ntawm kev xam cov insulators
Kev suav cov kab hluav taws xob sib txuas kom raug yog qhov tseem ceeb rau kev ua kom muaj kev nyab xeeb thiab kev ntseeg siab ntawm cov kab ke sib kis. Xaiv qhov tsis ncaj ncees lawm insulator tuaj yeem ua rau muaj teeb meem kev ua haujlwm tseem ceeb thiab tuaj yeem ua rau muaj kev phom sij rau tib neeg, tsiaj txhu, thiab ib puag ncig. Hluav taws xob thiab tshuab tsis ua hauj lwm nrog cov insulators tuaj yeem ua rau muaj kev puas tsuaj los yog phem dua, kev puas tsuaj loj.
Txawm li cas los xij, los ntawm kev xaiv qhov zoo insulator, cov kws tsim hluav taws xob tuaj yeem txhim kho kev ua haujlwm ntawm lub cev. Cov insulators tsim nyog tuaj yeem pab xa hluav taws xob hla qhov deb thiab qhov chaw ntxhib. Tsis tas li ntawd, xaiv cov insulator tsim nyog yuav pab txo cov nqi tu thiab ua kom lub neej ntev.