Nrog rau txoj kev loj hlob ntawm kev lag luam hluav taws xob, kev nthuav dav txuas ntxiv ntawm kev sib kis tau zoo, thiab nce qib voltage ntawm cov kab sib txuas thiab cov chaw nres tsheb, cov kev xav tau rau cov insulators hauv cov tshuab hluav taws xob tau dhau los ua nruj dua. Tsoos porcelain lossis iav insulators, uas tau siv rau ntau tshaj 100 xyoo nyob rau hauv high-voltage kis kab, muaj ob qho tib si zoo thiab qhov tsis zoo. Cov no suav nrog kev hnyav thiab tsis muaj zog, muaj cov pa phem tsis zoo, thiab ua rau muaj kev cuam tshuam sab hauv. Yog li ntawd, muaj ib qho kev xav tau ceev ceev rau ib hom tshiab insulator los hloov cov tsoos porcelain insulators. Nrog rau txoj kev loj hlob sai ntawm kev lag luam tshuaj thiab qhov tshwm sim ntawm cov ntaub ntawv sib xyaw tshiab, ib tiam tshiab ntawm cov insulators ua los ntawm cov ntaub ntawv organic-composite insulators- tau tshwm sim.
Composite insulators yog ib qho kev xaiv zoo tshaj plaws rau kev yooj yim installation lossis siv rau hauv cov cheeb tsam uas muaj kev sib kis ntau. Lawv yog tsim los ntawm cov qauv sib xyaw ua los ntawm ob lossis ntau hom khoom siv organic. Cov khoom siv hluav taws xob sib xyaw siv nyob rau hauv daim phiaj hluav taws xob feem ntau yog cov pas nrig-zoo li cov khoom siv hluav taws xob.
Lub ntsiab qauv ntawm lub insulator yog qhia nyob rau hauv daim duab hauv qab no:
1. End Fittings : End fittings yog cov khoom siv hlau ntawm cov khoom siv hluav taws xob sib xyaw, ua haujlwm raws li cov khoom siv thauj khoom sib kis. Lawv txuas cov insulator mus rau ntauwd thiab conductors, thiab lawv qhov zoo cuam tshuam ncaj qha rau cov neeg kho tshuab lub zog thiab kev ua tau zoo ntawm cov khoom siv insulator.
2. Core Qws: Cov tub ntxhais qws, tseem hu ua pultruded iav fiber reinforced epoxy pas nrig, yog thawj qhov chaw thauj khoom ntawm cov khoom siv hluav taws xob thiab cov khoom tseem ceeb ntawm cov rwb thaiv tsev sab hauv. Nws yuav tsum muaj lub zog txhua yam, zoo heev rwb thaiv tsev zog, thiab lub sij hawm ntev stability. Cov khoom tseem ceeb ntawm cov pas nrig feem ntau yog cov resin-reinforced unidirectional iav fiber ntau pultruded pas nrig. Nws ua raws li tus txha nraub qaum ntawm cov khoom siv insulator, txhawb nqa lub tsev, muab cov rwb thaiv tsev sab hauv, txuas qhov kawg fittings, thiab bearing mechanical loads. Nrog lub zog tensile feem ntau tshaj 600 MPa, cov tub ntxhais pas nrig yog ob zaug muaj zog li cov hlau zoo tib yam thiab 5-8 lub sij hawm muaj zog tshaj cov plooj (porcelain). Tsis tas li ntawd, nws muaj cov khoom zoo dielectric, tshuaj lom neeg ua haujlwm, khoov qaug zog tsis kam, creep tsis kam, thiab cuam tshuam tsis kam.
3. Sheds (Housing): Lub tsev los yog vaj tse tsim cov rwb thaiv tsev sab nraud ntawm cov khoom siv insulator. Lawv lub luag haujlwm yog los muab kev tiv thaiv siab tiv thaiv ntub thiab paug flashovers, tiv thaiv cov tub ntxhais pas nrig los ntawm huab cua. Cov vov tsev raug raug rau sab nraum zoov, ua rau huab cua hnyav thiab muaj kuab paug hauv kev lag luam, thiab tej zaum yuav raug kev puas tsuaj los ntawm cov hluav taws xob tawm los yog ib nrab arc yaig thaum ua haujlwm. Yog li ntawd, cov sheds yuav tsum muaj kev tiv thaiv kev kis kab mob flashover zoo heev, taug qab thiab yaig tsis kam, nrog rau kev tiv thaiv ozone, kub kub, thiab huab cua aging.
Cov Khoom Ntxiv
Adhesive Layer : Cov nplaum nplaum yog qhov sib txuas ntawm cov tub ntxhais pas nrig thiab lub tsev nyob, txuas ntxiv ntawm ob qhov kawg fittings. Nws yog lwm qhov tseem ceeb ntawm cov rwb thaiv tsev sab hauv ntawm cov khoom siv insulator. Cov nplaum nplaum tsis zoo tuaj yeem dhau los ua qhov tsis muaj zog ntawm cov insulator txoj haujlwm.
Cov khoom sib xyaw ua ke kom ntseeg tau tias cov khoom siv hluav taws xob zoo tshaj plaws ntawm cov hluav taws xob rwb thaiv tsev, kev siv lub zog, thiab kev ua haujlwm ntev, ua rau nws hloov tau zoo rau cov khoom siv plooj (porcelain insulators), tshwj xeeb tshaj yog nyob rau hauv high-voltage thiab polluted ib puag ncig.