Piv nrog rau lwm cov kev rho tawm, lub hauv paus ntsiab lus ntawm lub tshuab nqus tsev vacuum breakers yog txawv ntawm cov khoom sib nqus tshuab. Tsis muaj dielectric nyob rau hauv lub tshuab nqus tsev, uas ua rau lub arc extinguish sai sai. Yog li, dynamic thiab zoo li qub cov ntaub ntawv tiv tauj cov ntsiab lus ntawm kev hloov pauv tsis sib nrug heev. Kev rho tawm cov keyboards feem ntau yog siv rau cov khoom siv hluav taws xob engineering hauv kev ua cov nroj tsuag nrog cov ntsuas qis qis! Nrog rau txoj kev loj hlob sai ntawm cov khoom siv hluav taws xob, 10kV lub tshuab nqus tsev nqus hluav taws xob tau raug tsim tawm thiab siv hauv Suav teb. Rau cov neeg ua haujlwm tu, nws tau dhau los ua qhov teeb meem ceev los txhim kho kev paub ntawm lub tshuab nqus tsev vacuum breakers, ntxiv dag zog rau kev saib xyuas, thiab ua rau lawv ua haujlwm zoo thiab ntseeg tau. Siv ZW27-12 ua piv txwv, daim ntawv luv luv qhia txog lub hauv paus ntsiab lus thiab kev saib xyuas ntawm lub tshuab nqus tsev vacuum.
1. Rwb thaiv tsev khoom ntawm lub tshuab nqus tsev.
Lub tshuab nqus tsev muaj zog insulating zog. Nyob rau hauv lub tshuab nqus tsev vacuum breaker, lub vapor yog heev nyias, thiab arbitrary stroke kev npaj ntawm lub molecular qauv ntawm lub vapor kuj loj, thiab qhov tshwm sim ntawm kev sib tsoo nrog ib leeg yog me me. Yog li ntawd, qhov kev cuam tshuam tsis zoo tsis yog qhov laj thawj tseem ceeb rau kev nkag mus ntawm lub tshuab nqus tsev vacuum, tab sis nyob rau hauv cov nyhuv ntawm lub siab toughness electrostatic teb, electrode-deposited hlau cov khoom hais yog lub ntsiab ntawm kev puas tsuaj ntawm rwb thaiv tsev.
Lub zog dielectric compressive nyob rau hauv lub tshuab nqus tsev vacuum tsis yog tsuas yog hais txog qhov luaj li cas ntawm qhov sib txawv thiab qhov sib npaug ntawm electromagnetic teb, tab sis kuj cuam tshuam zoo heev los ntawm cov yam ntxwv ntawm cov hlau electrode thiab cov txheej txheem ntawm txheej txheej. Ntawm qhov sib txawv me me (2-3mm), qhov sib txawv ntawm lub tshuab nqus tsev muaj cov khoom siv hluav taws xob ntawm cov roj hluav taws xob siab thiab SF6 gas, uas yog vim li cas qhov chaw sib cuag qhib qhov deb ntawm lub tshuab nqus tsev Circuit Court breaker feem ntau me me.
Qhov ncaj qha cuam tshuam ntawm cov hlau electrode ntawm qhov tawg voltage yog tshwj xeeb hauv kev cuam tshuam toughness (compressive zog) ntawm cov khoom siv raw thiab cov ntsiab lus melting ntawm cov khoom hlau. Qhov siab dua lub zog compressive thiab melting point, qhov siab dua qhov dielectric compressive zog ntawm lub tshuab hluav taws xob hauv qab lub tshuab nqus tsev.
Cov kev sim qhia tau hais tias qhov siab dua lub tshuab nqus tsev nqi, qhov siab dua qhov tawg ntawm cov pa sib txawv, tab sis qhov pib tsis hloov siab tshaj 10-4 Torr. Yog li ntawd, txhawm rau kom tswj tau qhov zoo ntawm rwb thaiv tsev compressive lub zog ntawm lub tshuab nqus tsev nqus tsev nqus tsev vacuum, lub tshuab nqus tsev kawm ntawv yuav tsum tsis txhob qis dua 10-4 Torr.
2. Kev tsim thiab tua cov arc hauv lub tshuab nqus tsev.
Lub tshuab nqus tsev arc yog qhov sib txawv ntawm qhov kev them nyiaj thiab kev tso tawm ntawm vapor arc uas koj tau kawm ua ntej. Qhov xwm txheej random ntawm vapor tsis yog qhov tseem ceeb ua rau arcing. Lub tshuab nqus tsev arc them thiab tso tawm yog tsim nyob rau hauv vapor ntawm cov khoom hlau volatilized los ntawm kov lub electrode. Nyob rau tib lub sijhawm, qhov loj ntawm qhov tawg tam sim no thiab cov yam ntxwv arc kuj sib txawv. Peb feem ntau faib nws mus rau hauv qis-tam sim no nqus arc thiab high-tam sim no nqus arc.
1. Me tam sim no lub tshuab nqus tsev arc.
Thaum qhov chaw sib cuag tau qhib rau hauv lub tshuab nqus tsev, nws yuav ua rau qhov tsis zoo electrode xim qhov chaw uas tam sim no thiab lub zog kinetic muaj zog heev, thiab ntau cov khoom hlau vapor yuav volatilize los ntawm qhov tsis zoo electrode xim. taws. Nyob rau tib lub sijhawm, cov khoom siv hlau vapor thiab cov khoom siv hluav taws xob nyob rau hauv arc kem txuas ntxiv mus, thiab cov theem hluav taws xob tseem tseem ua rau cov khoom tshiab volatilize. Thaum qhov tam sim no hla xoom, lub zog kinetic ntawm lub arc txo, qhov kub ntawm cov electrode txo, qhov tseeb cov nyhuv ntawm volatilization txo, thiab cov huab hwm coj ceev hauv arc kem txo. Thaum kawg, qhov tsis zoo electrode qhov chaw txo qis thiab lub arc yog extinguished.
Qee lub sij hawm volatilization tsis tuaj yeem tswj hwm qhov kev nthuav tawm ntawm kab ke, thiab lub arc yog dheev tua, ua rau muaj kev cuam tshuam.
Lub sij hawm xa tuaj: Plaub Hlis-25-2022