I-Sulfur Hexafluoride (SF6) I-Circuit Breaker

I-breaker circuit apho i-SF6 phantsi kwegesi yoxinzelelo isetyenziselwa ukucima i-arc ibizwa ngokuba yi-SF6 i-circuit breaker. I-SF6 (i-sulphur hexafluoride) irhasi inedielectric egqwesileyo, i-arc quenching, iikhemikhali kunye nezinye iipropathi ezibonakalayo ezibonise ukongama kwayo kunezinye iindlela zokucima i-arc ezifana ne-oyile okanye umoya. I-SF6 i-circuit breaker yahlulwe kakhulu ibe ziindidi ezintathu:

• I-non-puffer piston circuit breaker
• I-single-puffer piston circuit breaker.
• I-puffer-piston circuit breaker kabini.

I-breaker circuit eyayisebenzisa umoya kunye ne-oyile njengendlela yokukhusela, amandla abo okucima i-arc awakhekile ayecotha emva kokuhamba kokuhlukana koqhagamshelwano. Kwimeko yee-high-voltage circuit breakers iipropathi ezikhawulezayo zokuphela kwe-arc zisetyenziswa ezifuna ixesha elincinci lokuchacha ngokukhawuleza, i-voltage iyanda. Abaqhankqalazi be-SF6 baneempawu ezintle kule nkalo xa kuthelekiswa neoli okanye i-air circuit breakers. Ngoko kwi-voltage ephezulu ukuya kwi-760 kV, i-SF6 i-circuit breakers isetyenziswa.

Iipropati zeSulfur hexafluoride Circuit Breaker

I-Sulfur hexafluoride inendawo entle kakhulu yokugquma kunye ne-arc yokucima. Ezi propati zi

• Ayinabala, ayinavumba, ayinatyhefu kwaye ayinakutsha.
• Irhasi ye-SF6 izinzile ngokugqithisileyo kwaye ayisebenzi, kwaye ukuxinana kwayo kuphindwe kahlanu kunomoya.
• Ine-conductivity ephezulu ye-thermal engcono kunaleyo yomoya kwaye inceda kwiindawo eziphetheyo zokupholisa zangoku.
• Igesi ye-SF6 inamandla e-electronegative, okuthetha ukuba ii-electron ezikhululekile zisuswa ngokulula ekukhutshweni ngokwenziwa kweeyoni ezingalunganga.
• Inepropathi eyodwa yokudibanisa kwakhona ngokukhawuleza emva kokuba umthombo wamandla ususiwe. Isebenza ngokuphindwe ka-100 xa kuthelekiswa ne-arc quenching medium.
• Amandla ayo e-dielectric ngamaxesha angama-2.5 kunomoya kunye ne-30% ngaphantsi kweoli ye-dielectric. Kuxinzelelo oluphezulu amandla e-dielectric yegesi ayanda.
• Ukufuma kuyingozi kakhulu kwi-SF6 i-circuit breaker. Ngenxa yokuhlanganiswa komswakama kunye negesi ye-SF6, i-hydrogen fluoride yenziwe (xa i-arc iphazamiseka) enokuhlasela iindawo ze-breaker circuit.

Ukwakhiwa kwee-SF6 Circuit Breakers

I-SF6 izaphuli zesekethe zibandakanya ubukhulu becala ngamacandelo amabini, angala (a) iyunithi yokuphazamiseka kunye (b) nenkqubo yegesi.

Iyunithi yoMphazamisi - Le yunithi iqulethe abafowunelwa abahambayo kunye nabasisigxina ababandakanya isethi yamacandelo akhoyo aphetheyo kunye ne-arcing probe. Iqhagamshelwe kwindawo yokugcina igesi ye-SF6. Le yunithi iqulathe imingxuma yesilayidi kubafowunelwa abahambayo evumela igesi yoxinzelelo oluphezulu kwitanki enkulu.

I-Gas System - Inkqubo yegesi yegesi evaliweyo iqeshwe kwi-SF6 i-circuit breakers. Irhasi ye-SF6 iyabiza, ngoko ibuyiselwa emva komsebenzi ngamnye. Le yunithi iquka amagumbi aphantsi kunye noxinzelelo oluphezulu kunye ne-alamu yoxinzelelo oluphantsi kunye nokutshintsha kwesilumkiso. Xa uxinzelelo lwegesi luphantsi kakhulu ngenxa yokuba amandla e-dielectric yeegesi ayancipha kwaye i-arc quenching ikhono le-breakers isengozini, ke le nkqubo inika isilumkiso sesilumkiso.

Umgaqo-siseko wokuSebenza we-SF6 i-Circuit Breaker

Kwiimeko eziqhelekileyo zokusebenza, oonxibelelwano lwe-breaker bavaliwe. Xa impazamo yenzeka kwinkqubo, abafowunelwa batsalwa ngaphandle, kwaye i-arc ibethelwa phakathi kwabo. Ukufuduswa kwabafowunelwa abahambahambayo kulungelelaniswa kunye ne-valve engena kwi-high-pressure SF6 igesi kwigumbi lokuphazamisa i-arc kwixinzelelo malunga ne-16kg / cm ^ 2.

Irhasi ye-SF6 ifunxa ii-electron zasimahla kwindlela ye-arc kwaye yenze iiyoni ezingasebenziyo njengomphathi wentlawulo. Ezi ion zonyusa amandla e-dielectric yegesi kwaye ngenxa yoko i-arc icinyiwe. Le nkqubo inciphisa uxinzelelo lwegesi ye-SF6 ukuya kwi-3kg / cm ^ 2 ngoko; igcinwe kwindawo yoxinzelelo oluphantsi. Le gesi yoxinzelelo oluphantsi itsalwa umva kwireservoir yoxinzelelo oluphezulu ukuze iphinde isetyenziswe.

Ngoku i-piston yoxinzelelo lwe-puffer yosuku isetyenziselwa ukuvelisa uxinzelelo lokucima i-arc ngexesha lokuvula ngokusetyenziswa kwepiston edityaniswe kubafowunelwa abahambayo.

I-Advantage ye-SF6 i-circuit breaker

I-SF6 izaphuli zesekethe zineenzuzo zilandelayo ngaphezu kwe-breaker yesiqhelo

1. Irhasi ye-SF6 ine-insulating egqwesileyo, yokucima i-arc kunye nezinye iipropathi ezininzi ezizezona zinto ziluncedo kwi-SF6 izaphuli zesekethe.
2. Irhasi ayinakutsha kwaye izinzile ngokwekhemikhali. Iimveliso zabo zokubola azidubuli kwaye kungoko akukho mngcipheko womlilo okanye uqhushumbo.
3. Ukukhutshwa kombane kuncitshiswe kakhulu ngenxa yamandla aphezulu e-dielectric ye-SF6.
4. Ukusebenza kwayo akuchaphazeli ngenxa yeenguqu kwimeko ye-atmospheric.
5. Inika ukusebenza ngokungenangxolo, kwaye akukho ngxaki yamandla ombane ngaphezulu kuba i-arc icinyiwe kwi-zero yangoku yendalo.
6. Akukho kuncipha kumandla e-dielectric kuba akukho zincinci zekhabhoni ezenziwe ngexesha le-arcing.
7. Ifuna ukugcinwa okuncinci kwaye akukho nkqubo yomoya ecinezelekileyo efunekayo.
8. I-SF6 yenza imisebenzi eyahlukeneyo efana nokucoca iimpazamo zendlela emfutshane, ukutshintsha, ukuvula iintambo zothumelo ezingalayishwanga, kunye ne-reactor ye-transformer, njl.

Ukungalungi kwe-SF6 i-circuit breakers

1. Irhasi ye-SF6 iyafuthanisela ukusa kumlinganiselo othile. Kwimeko yokuvuza kwitanki ye-breaker, igesi ye-SF6 inzima kunomoya kwaye yiloo nto i-SF6 ihlaliswe kwindawo engqongileyo kwaye ikhokelela ekuphelelweni kwabasebenzi abasebenzayo.
2. Ukungena kokufuma kwi-tank ye-SF6 ye-breaker kuyingozi kakhulu kwi-breaker, kwaye kubangela ukungaphumeleli okuninzi.
3. Amalungu angaphakathi afuna ukucocwa ngexesha lokugcinwa kwamaxesha ngamaxesha phantsi kwemeko ecocekileyo neyomileyo.
4. Indawo ekhethekileyo idinga ukuthutha kunye nokugcinwa komgangatho wegesi.

(Sicaphula eli nqaku kule webhusayithi: https://circuitglobe.com/sf6-sulphur-hexaflouride-circuit-breaker.html)