Ib txoj hlua insulator yog ib qho kev sib dhos uas ob lossis ntau lub ntsiab lus insulator tau ua ke ua ke kom yooj yim tshem tawm cov xaim. Ib txoj hlua insulator yog cov cuab yeej tiv thaiv nrog kev ruaj khov thiab kev ua haujlwm, siv los tshem tawm cov conductors thiab insulate lawv los ntawm ntauwd thiab hauv av.
Kev sib dhos ntawm cov hlua hluav taws xob siv rau hauv cov kab sib txuas yog qhov sib txawv vim qhov sib txawv ntawm cov qauv ntauwd, cov qauv insulator hom, hlau loj, tus naj npawb ntawm cov hlau lead hauv txhua theem thiab theem voltage.
Dangling insulator hlua
Pendant insulator hlua tsuas yog siv tau rau cov kab yees (lossis jumpers ntawm tensioned towers). Daim duab 2-7 qhia ib qho pendant insulator hlua. Hauv kev ua haujlwm ib txwm muaj, nws tsuas yog dais cov xaim thiab qhov ntxiv ntsug thiab cua load. Nyob rau hauv cov ntaub ntawv ntawm kev huam yuaj, nws yuav tsum dais cov hlau tawg nro ntawm cov hlau. Yog li ib txoj hlua dangling insulator yuav tsum txaus siab rau ob qho xwm txheej no.
Vim yog qhov sib txawv ntsug load, txhua theem ntawm cov hlua hluav taws xob raug tshem tawm tuaj yeem sib sau ua ke hauv ntau hom ntawm ib txoj hlua, ob txoj hlua lossis ntau txoj hlua. Kev siv cov hlua hluav taws xob ib leeg muaj ntau yam zoo: (1) qhov xav tau ntawm cov cuab yeej thiab cov insulators me me, tus nqi qis dua; (2) Tus nqi sib raug zoo kuj tseem tsawg dua, tus nqi hloov pauv, kho thiab kho dua tshiab kuj raug txo; (3) Vim tias qhov tshwm sim ntawm qhov tshwm sim yog qhov sib npaug rau tus naj npawb ntawm cov insulators thiab cov xov tooj ntawm cov hlua, tus naj npawb ntawm cov insulators raug txo, yog li qhov flashover qhov tshwm sim qis dua. Txawm li cas los xij, kev ntseeg siab ntawm ib txoj hlua insulator ib leeg yog tsawg thaum muaj ib qho kev puas tsuaj rau hauv txoj hlua. Feem ntau, ob lossis ntau txoj hlua hluav taws xob tuaj yeem siv rau hauv qhov chaw uas muaj qhov sib txawv loj, muaj zog loj thiab tseem ceeb hla. Tom qab siv ob txoj hlua insulator, txoj hlua ntev yuav nce, thiab qhov siab ntawm tus ncej yuav raug txo los ntawm 0.3 ~ 1m. Yog li ntawd, kev siv ib leeg raug tshem tawm insulator hlua. Tsuas yog thaum lub load ntsug loj thiab lub zog ntawm ib txoj hlua ib leeg tsis tuaj yeem ntsib, lossis nyob rau hauv qhov tseem ceeb hla, nws yuav tsum siv ob lossis ntau txoj hlua insulator. Qee lub sij hawm, nyob rau hauv lub roob thaum lub overhang lub kaum sab xis tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua, kuj tau siv ob npaug rau ob qhov clip.
Tensioning insulator hlua
Qhov teeb meem kev ntxhov siab ntawm tensioning insulator hlua yog txawv kiag li ntawm dangling insulator hlua. Nyob rau hauv ib txwm ua haujlwm, dangling insulator hlua tsuas yog bears ntsug load thiab tsis dais hlau nro, thaum tensioning insulator hlua tsuas yog qhov opposite, nws mas bears tag nrho cov kab rov tav nro ntawm hlau.
Raws li nrog dangling insulator strings, thaum tus naj npawb ntawm insulated sub-strings xav tau rau txhua txoj hlua yog txiav txim siab, cov txheej txheem ntawm dai cov ntsiab lus yuav tsum tau xaiv. Vim tias qhov taw tes dai yog qhov chaw uas qhov kev ntxhov siab ntawm cov hlua insulator yog concentrated, peb yuav tsum xaiv txoj kev dai nrog cov qauv yooj yim, hloov tau yooj yim, kev tsim kho yooj yim thiab kev ntxhov siab. Vim tias qhov no, txawm hais tias muaj ntau txoj hauv kev los dai cov kab hluav taws xob hluav taws xob, feem ntau muaj ob txoj hauv kev tseem ceeb ntawm kev dai ib lub ntsiab lus square thiab ob lub ntsiab lus. Ob txoj hauv kev ntawm kev dai hlau tuaj yeem tig tau ywj pheej nce thiab nqis thiab sab laug thiab sab xis, yog li cov qauv dai ntawm cov hlau no tsim nyog rau kev hloov ntawm lub kaum sab xis, thiab haum rau cov kev xav tau ntawm lub kaum sab xis ntawm cov hlau.
V insulator hlua
Muaj ntau hom V-shaped insulator los ua ke, thiab V-shaped insulator hlua yog ib qho zoo ib yam. Kev siv cov V-shaped insulator hlua muaj qhov zoo hauv qab no:
(1) tuaj yeem txwv lub viav vias ntawm cov hlua insulator, yog li txo qhov loj ntawm ntauwd taub hau;
(2) Nws tuaj yeem nqaim txoj kab ntawm txoj kev, yog li txo qhov dav ntawm tsob ntoo txiav hauv thaj chaw hav zoov, tab sis kuj txhim kho qhov kev khawb ntawm txoj kab nqes roob;
(3) Nws tuaj yeem txo tus nqi ntawm kev yuav khoom hauv txoj hauv kev thaum tsim cov kab, kom txuag tau peev.
Txawm li cas los xij, ntawm qhov tod tes, kev siv V-shaped insulator hlua yuav muab ob npaug rau qhov yuav tsum tau insulator. Yog li ntawd, V-shaped insulated substring feem ntau yog siv rau hauv iav hom, hom qhov rooj, miv taub hau hom nruab nrab theem hlau txwv los ntawm ntauwd qhov rais. Yog tias nws siv nyob rau theem sab, nws tsis yog kev lag luam los ua rau sab theem hla caj npab ntev dua, yog li kev sib piv kev lag luam thiab kev lag luam yuav tsum tau ua ua ntej siv V-shaped insulator hlua. Thaum cov kab qub kev hloov pauv lossis kab txhawb nqa, kev siv V-shaped ntug substring yog qhov tsim nyog dua.
Chain insulator hlua
Nrog rau qhov nce voltage theem ntawm cov kab sib txuas, kuj tseem muaj hom saw-zoo li tus ncej ntauwd ntawm cov hlua insulator. Cov hlua insulator tsis tsuas yog ua lub luag haujlwm ntawm kev rwb thaiv tsev, tab sis kuj hloov cov ncej thiab ntauwd cross caj npab, uas tshem tawm cov txheej txheem steel ntoo hla caj npab. Yog tias tus ntoo khaub lig yog hloov los ntawm cov khoom siv hluav taws xob, nws kuj muaj qhov zoo ntawm lub teeb yuag, lub teeb kev thauj mus los, qhov chaw me me, kev tsim kho yooj yim thiab lwm yam. Raws li tus ncej ntauwd ntawm high-voltage kis tau tus mob kab, tshwj xeeb tshaj yog tus ncej ntauwd rau kev kho thaum muaj xwm ceev, nws yog heev haum. Hom ntauwd hom no kuj tseem siv tau hauv peb 500kV compact kab.
Raws li cov hlua insulator yog ib qho yooj yim sib xyaw ua ke, nws tsis tuaj yeem tiv taus siab, yog li thaum cov saw hlau insulator hlua siv raws li hom ntauwd, cov hlua insulator yuav tsum tau tiv thaiv los ntawm lub siab.