Sulfur hexafluoride yog cov roj uas tsis muaj tshuaj lom, tsis muaj zog, thiab tsis muaj hluav taws xob uas muaj cov tshuaj sulfur atom nyob ib puag ncig thiab sib txuas nrog rau rau fluorine atoms. Sulfur hexafluoride (SF6) yog cov khoom siv hluav taws xob ntau tshaj plaws hauv cov tshuab hluav taws xob siab vim yog cov khoom siv hluav taws xob (electron affinity.) SF6 yog nyob ib ncig ntawm tsib npaug ntawm qhov ntom ntom ntawm huab cua nyob nruab nrab ntawm hiav txwv theem, thiab tsis muaj xim, tsw, lossis saj. SF6 yuav luag cov dej tsis huv, thiab zoo li nrog rau tag nrho lwm cov pa roj, nws cov solubility txo qis thaum qhov kub ntawm cov dej nce.
SF6 Gas Siab SF6 roj yog nyob rau hauv GIS systems ntawm lub siab ntawm 400 mus rau 600 kPa kiag li. Qhov siab ntau yam no yog qhov zoo tagnrho, txhawm rau tiv thaiv cov pa roj los ntawm condensing rau hauv cov kua ntawm qhov qis tshaj qhov muaj peev xwm kub uas cov cuab yeej yuav raug rau.SF6 yog cov pa roj uas qhov ceev ntawm lub suab nrov yog li peb zaug tsawg dua hauv huab cua, ( ntawm atmospheric siab.) Lub suab ntawm kev cuam tshuam ntawm lub arc yuav yog li ntsiag to nyob rau hauv SF6 tshaj nyob rau hauv huab cua.
Toxic Breakdown Gaseslos ntawm SF6HF - Hydrofluoric (HF) acid, yog cov tshuaj lom neeg tawg ntawm SF6. Nws feem ntau yog cov roj, nrog rau qhov kub ntawm kwv yees li 19 degree. Cov tsos mob ntawm kev kis tau raug ncua. Vim nws cov reactivity siab, nws tsis muaj ib nrab-lub neej ntev.SO2 - Sulfur dioxide (SO2), cov khoom puas tsuaj ntawm SF6. Nws feem ntau yog cov pa roj (qhov kub kub kwv yees li -10 degree ).SOF2 - Thionyl fluoride (SOF2), cov khoom tawg yooj yim ntawm SF6.Nws decomposes dhau sij hawm thaum muaj cov dej noo mus rau SO2 thiab HF. Nws yog cov roj tsis muaj xim nrog cov ntxhiab tsw (zoo ib yam li cov qe lwj), condensing ntawm kwv yees li -43 degree .
Gas Recycling Txhawm rau tswj cov pa tawm los ntawm GIS system, SF6 yog tag nrho nyob rau hauv lub kaw lus kaw, tso cai rau tag nrho reclamation thiab recycling. Los ntawm kev ua raws li cov lus qhia thoob ntiaj teb tam sim no rau kev siv SF6 hauv cov khoom siv hluav taws xob, kev koom tes ntawm SF6 rau lub ntiaj teb ua kom sov tuaj yeem khaws cia tsawg dua 0.1% nyob rau lub sijhawm 100- xyoo, thaum cov lus qhia nruj raws li GIS cov neeg ua haujlwm.
Condensation li MoistureThe SF6 roj nyob rau hauv cov ntaub ntawv yuav tsum qhuav txaus los tiv thaiv condensation ntawm noo noo mus rau qhov chaw ntawm lub epoxy txhawb insulators, raws li noo noo nyob rau saum npoo yuav ua rau ib tug dielectric puas.
Gas Dew Points; Condensation li IceCondensation li Ice - thaum cov dej noo condenses li dej khov, qhov tawg voltage tsis cuam tshuam.Gas Dew Points - Yog li cov roj dew ntsiab lus yuav tsum nyob twj ywm hauv qab li ntawm -10 degree. Tsis tas li ntawd, qib qis dua 1000 ppmv ntawm cov dej noo feem ntau tau teev tseg, thiab tau yooj yim tau thaum siv roj ceev ceev.
Yuav tsum tau Gas Purity- hmoov zoo, lub purity ntawm SF6 yuav tsum tsuas yog siab dua 98% raws li tsim los ntawm thoob ntiaj teb cov qauv, yog li ib tug yooj yim teb kev ntsuam xyuas ntawm cov roj purity siv lag luam feem pua ntawm SF6 meters yuav tsim nyog rau siv SF6 rov qab siv.