SF6 Circuit Breaker

High-voltage SF6 Circuit Court breaker yog ib qho tseem ceeb hauv daim phiaj hluav taws xob, uas muaj kev cuam tshuam tseem ceeb rau kev ntseeg siab ntawm kev ua haujlwm ntawm daim phiaj hluav taws xob.

1. Thaum electrons thiab SF6 molecules nyob rau hauv kev sib cuag, yuav luag 100% ntawm lawv yog tov los tsim hnyav tsis zoo ions, uas muaj nuj nqis rau lub deionization thiab tua ntawm seem seem arc. Ntawd yog, SF6 muaj qhov zoo electronegativity, thiab nws cov molecules tuaj yeem ntes cov electrons sai sai thiab tsim cov ions tsis zoo. Cov nyhuv conduction ntawm cov ions tsis zoo no qeeb heev, uas ua rau lub zog rov qab los ntawm qhov sib txawv nruab nrab ntawm lub zog, yog li nws muaj kev ua haujlwm zoo arc extinguishing. Nyob rau hauv lub siab ntawm 1.01 × 105Pa, lub arc extinguishing kev ua tau zoo ntawm SF6 yog 100 lub sij hawm ntawm huab cua, thiab nws tsis deteriorate tom qab arc extinguishing thiab rov qab siv tau.

2, SF6 roj zoo rwb thaiv tsev thiab arc extinguishing kev ua tau zoo, yog li ntawd SF6 Circuit Court breaker muaj qhov zoo hauv qab no: muaj zog tawg muaj peev xwm, tawg voltage yog tsim rau ua siab dua, tso cai rau kev tawg ntau zaus, haum rau kev khiav hauj lwm tsis tu ncua, suab nrov, tsis muaj hluav taws kub txaus ntshai, mechanical thiab hluav taws xob hnav me me, yog ib qho kev ua tau zoo ntawm "tsis muaj kev saib xyuas" Circuit Court breaker. Nws yog siv ntau thiab ntau nyob rau hauv high voltage Circuit Court.

Feem ntau siv SF6 Circuit Court breakers yog LN1-35 hom, HB36 hom ob.

Ntshiab SF6 roj yog ib qho zoo arc extinguishing nruab nrab. Yog tias nws yog siv hauv cov khoom siv hluav taws xob tsawg tsawg nrog kev ua haujlwm tsis tu ncua, vim qhov kev ua haujlwm ntawm kev ua haujlwm tsis tu ncua, hlau vapor reacts nrog SF6 gas decomposition, thiab sib xyaw ua cov hmoov zoo nrog cov rwb thaiv tsev zoo (hydrofluorate, sulpiate, thiab lwm yam), uas tau muab tso rau ntawm qhov chaw ntawm kev sib cuag thiab ua rau muaj kev sib cuag nrog cov khoom hnyav. Lub kaw lus kaw nrog cov roj SF6 tsis tuaj yeem ua haujlwm tau zoo. Yog li, SF6 tsis haum rau kev ua haujlwm tsis tu ncua ntawm cov khoom siv hluav taws xob tsawg- raws li qhov nruab nrab ntawm kev tua hluav taws.

Vim tias SF6 roj yuav decompose corrosive roj ntawm qhov kub thiab txias thaum lub sij hawm tso tawm, nws muaj kev cuam tshuam loj corrosion ntawm aluminium alloy, thiab tseem ua rau phenolic resin laminate cov ntaub ntawv thiab porcelain rwb thaiv tsev. Yog tias SF6 thiab N2 sib xyaw, thaum SF6 cov ntsiab lus siab tshaj 20% mus rau 30%, lub rwb thaiv tsev lub zog tau zoo ib yam li cov rwb thaiv tsev lub zog thaum puv puv nrog SF6, thiab corrosion kuj txo qis, yog li SF6 feem ntau sib xyaw N2 yog siv, hauv SF6 Circuit Court breaker, cov dej ntsiab lus ntawm SF6 roj yuav tsum nruj me ntsis txwv tsis pub tshaj tus qauv. Dej thiab SF4 nyob rau hauv arc decomposition tsim hydrofluoric acid (H2O + SF4 → SOF{17}}HF), uas corrodes cov khoom. Thaum cov ntsiab lus noo noo mus txog saturation, nws tseem yuav condense rau saum npoo ntawm rwb thaiv tsev, uas txo cov rwb thaiv tsev lub zog thiab txawm ua rau ntog tawm. Kev ua haujlwm thiab kev soj ntsuam saum toj no qhia tau hais tias: SF6 Circuit Court breaker vim lub ntim me me ntawm cov txheej txheem rwb thaiv tsev, yog tias cov dej ntawm SF6 roj yog siab, cov txheej txheem rwb thaiv tsev yuav raug txo kom tsawg, kev tiv thaiv kev tiv thaiv yuav nce siab, thiab kev puas tsuaj lossis tawg tawg yog feem ntau tshwm sim thaum lub sijhawm ua haujlwm. Yog li ntawd, txhua lub chaw tsim khoom thiab chaw ua haujlwm yuav tsum muaj kev sib khi nruj, thiab cov ntsiab lus dej ntawm SF6 yuav tsum tsis pub tshaj tus qauv. Tuam Tshoj tus qauv yog tias cov dej ntsiab lus ntawm SF6 roj yuav tsum tsawg dua 300ppm (ntim piv).

SF6 Circuit Court breaker siv SF6 gas li arc extinguishing nruab nrab. Raws li ib txwm muaj, SF6 yog ib qho uas tsis yog-flammable, odorless, non- toxic inert gas, li tsib zaug li ntom li huab cua. Txawm li cas los xij, nyob rau hauv qhov kev txiav txim ntawm lub arc, ib feem me me ntawm SF6 roj yuav decomposed thiab tsim ib co tshuaj lom uas tsis muaj fluoride, xws li SOF2, SF4, SOF4 thiab SO2F2, uas muaj kev cuam tshuam rau lub cev noj qab haus huv thiab corrosion thiab deterioration ntawm hlau qhov chaw. Yog li ntawd, nyob rau hauv lub SF6 Circuit Court breaker, lub adsorption ntaus ntawv yog feem ntau ntsia, thiab cov adsorbent yog activated alumina, activated carbon thiab molecular sieve. Cov khoom siv adsorption tuaj yeem ua kom tag nrho cov tshuaj lom neeg tsim los ntawm kev puas tsuaj ntawm SF4 roj ntawm qhov kub ntawm qhov arc.