Hauv lub neej niaj hnub hauv nroog, txhua tsev neeg muaj ntau yam khoom siv hauv tsev. Thaum siv cov khoom siv no, tib neeg muaj kev nkag siab tsis zoo. Lub sijhawm no, peb tau txheeb xyuas kev siv cov tshuab nqus tsev hauv tsev thiab lawv lub luag haujlwm yog dab tsi? Kev siv cov tshuab nqus tsev hauv tsev kom raug tuaj yeem ua kom muaj kev nyab xeeb ntawm peb tsev neeg thiab cov txheeb ze. Niaj hnub no, peb yuav piav qhia meej txog kev siv lub tshuab nqus tsev hauv tsev thiab lawv txoj haujlwm. Txhawm rau tiv thaiv kev nyab xeeb ntawm koj tsev neeg thiab phooj ywg, thov nyeem kom zoo. Ua raws li tus hneev taw ntawm tus menyuam luav thiab nyeem ua ke!
Thaum lub tshuab nqus tsev vacuum Circuit Court breaker nyob rau hauv txoj hauj lwm kaw, nws cov rwb thaiv tsev rau hauv av yog borne los ntawm kev txhawb insulator. Thaum cov kab txuas nrog rau sab hauv lub tshuab nqus tsev vacuum Circuit Court breaker muaj qhov tsis raug hauv av mus tas li, qhov kev mus ncig ntawm Circuit Court breaker thiab lub hauv paus tsis raug tshem tawm, lub rwb thaiv tsev ntawm lub tshuab hluav taws xob rau hauv av yuav tsum tau ua los ntawm lub tshuab nqus tsev vacuum ntawm lub Circuit Court breaker. tawg; thaum muaj ntau yam txhaum lawm, lub tshuab nqus tsev rwb thaiv tsev qhov sib txawv ntawm ib khub ntawm kev sib cuag ntawm lub so yuav tsum tiv thaiv cov teebmeem ntawm ntau yam rov qab voltages yam tsis muaj kev puas tsuaj.
Yog li ntawd, cov yam ntxwv ntawm rwb thaiv tsev ntawm lub tshuab nqus tsev vacuum tau dhau los ua lub ntsiab lus tshawb fawb txog kev nce qhov hluav taws xob ntawm lub arc extinguishing chamber thiab tsim ib qho kev sib cais sab hauv tsev nqus tsev vacuum Circuit Court breaker mus rau theem siab voltage. Qhov kev qhia ntawm lub tshuab nqus tsev kawm ntawv Qhov chaw uas muaj cov pa uas tsis tshua muaj siab uas nws lub siab siab qis dua ib qho atmospheric siab yog hu ua lub tshuab nqus tsev. Qhov siab dua lub tshuab nqus tsev kawm ntawv, qhov qis dua cov pa roj hauv qhov chaw. Muaj peb txoj hauv kev los qhia txog chav tsev ntawm lub tshuab nqus tsev kawm ntawv: Torr (ie 1 hli mercury kem qhov siab), millibar (103bar) lossis Pascal (Pascal: Pa). (1 Torr=131.6Pa, 1 millibar=100Pa) Qhov peb feem ntau hais yog tias lub tshuab nqus tsev kawm ntawv hauv lub tshuab nqus tsev arc extinguishing chamber yuav tsum ncav cuag 10-4 Torr, uas txhais tau hais tias cov roj siab sab hauv lub arc extinguishing chamber tsuas yog "ib kaum-txhiab ntawm ib hli mercury kem qhov siab", uas yog, 1.31x10-2Pa. "Paison's Theorem" kuj txhais tau tias "Paschen's Law", uas yog hais txog kev sib raug zoo ntawm qhov sib txawv ntawm qhov muaj zog thiab cov roj siab.
Kev sib raug zoo nkhaus sawv cev rau Paison's Theorem yog "V" zoo li tus, uas yog, qhov nce lossis txo qis ntawm cov nyiaj nce siab tuaj yeem txhim kho lub zog rwb thaiv tsev ntawm qhov sib txawv ntawm electrode. Nws txoj kev puas tsuaj tseem tsis tau paub meej, vim tias lub tshuab nqus tsev nqus hauv lub tshuab nqus tsev cuam tshuam siab dua 10-4 Torr. Nyob rau hauv xws li qhov chaw tsis tshua muaj huab cua, kev mus ncig dawb ntawm cov roj molecules yog 103 hli. Nyob rau hauv xws li ib tug ntim ntawm lub tshuab nqus tsev interrupter, qhov tshwm sim ntawm kev sib tsoo yog yuav luag xoom. Yog li ntawd, yuav tsis muaj kev sib tsoo thiab kev ywj pheej ua rau lub tshuab nqus tsev vacuum tawg. Qhov "V"-shaped nkhaus ntawm Paison theorem tau txais kev sim. Raws li qhov xwm txheej ntawm cov hluav taws xob tsis sib xws, nws qhov sib txawv tawg voltage Uj tuaj yeem qhia tau tias: Uj=KLa L------ kis nrug; a------gap coefficient (a=1 thaum qhov sib txawv<5mm, a=0.5 when >5mm) Nws tuaj yeem pom los ntawm "V"-shaped kev sib raug zoo nkhaus ntawm Paison theorem tias thaum lub tshuab nqus tsev nqus mus txog 103 Torr, qhov taw qhia inflection tshwm, thiab nkhaus nyob ze ntawm qhov taw tes inflection yuav tiaj tus, thiab qhov tawg voltage tsis tshua hloov. Thaum lub tshuab nqus tsev kawm ntawv thiab qhov sib txawv ntawm qhov sib txawv yog tib yam, qhov kev hloov pauv hloov pauv nrog cov khoom siv hluav taws xob sib cuag. Thaum cov khoom siv electrode muaj lub zog txhua yam thiab siab melting point, qhov tawg voltage ntawm lub tshuab nqus tsev vacuum kuj nce raws li.
Lub luag haujlwm ntawm lub tshuab nqus tsev vacuum Circuit Court breakers yog:
1. Kev sib cuag me me qhib qhov deb. Qhov kev sib cuag qhib qhov deb ntawm 10KV sab hauv tsev lub tshuab nqus tsev twj tso kua mis tsuas yog kwv yees li 10 hli, yog li kev ua haujlwm ntawm kev khiav hauj lwm mechanism yog me me, cov hlab ntsha ntawm lub tshuab yog me me, thiab nws lub neej txhua yam yog ntev.
2. Lub sij hawm arcing yog luv thiab tsis muaj dab tsi ua nrog qhov loj ntawm qhov hloov tam sim no. Nws yog feem ntau tsuas yog ib nrab ntawm lub voj voog.
3. Lub dielectric rov qab ceev ntawm qhov sib chwv sib txawv yog ceev tom qab lub arc yog extinguished, thiab kev ua tau zoo ntawm kev tawg ze-zone faults yog zoo dua.
4. Txij li thaum tus nqi ntawm lub dredging yog me me thaum tawg tam sim no, hluav taws xob lub neej ntawm kev sib cuag yog ntev, tag nrho cov peev xwm tawg yog mus txog 30-50 zaug, qhov ntsuas tam sim no tawg yog ntau tshaj 5000 zaug. , thiab lub suab nrov yog me me thiab haum rau kev ua haujlwm nquag.
5. Qhov loj me thiab lub teeb yuag, haum rau kev tawg capacitive load tam sim no.
Vim nws ntau yam zoo, nws yog dav siv nyob rau hauv substations. Cov qauv tam sim no feem ntau yog: ZN12-10, ZN28A-10, ZN65A-12, ZN12A-12, VS1, ZN30, thiab lwm yam.
Kuv ntseeg tias txhua tus neeg muaj qee qhov kev nkag siab ntawm kev siv lub tshuab nqus tsev hauv tsev thiab lawv txoj haujlwm. Tsim nyog thiab muaj kev nyab xeeb siv lub tshuab nqus tsev hluav taws xob hauv tsev kom ua kom lawv siv tau ntau tshaj plaws. Tej zaum koj yuav tsis tau ntsib nrog lub tshuab nqus tsev hauv tsev ua ntej, tab sis raws li kev taw qhia ntawm Xiaotu, txhua tus muaj kev nkag siab ntxiv txog nws. Tsuas yog nrog kev cob qhia thiab kev tshuaj xyuas cov phooj ywg tuaj yeem siv cov tshuab nqus tsev hauv tsev kom raug ntau dua.