I-Sulfur Hexafluoride (SF6) I-Circuit Breaker

I-circuit breaker lapho i-SF6 ngaphansi kwegesi yengcindezi isetshenziselwa ukucisha i-arc ibizwa ngokuthi i-SF6 circuit breaker. Igesi ye-SF6 (i-sulphur hexafluoride) ine-dielectric enhle kakhulu, i-arc quenching, amakhemikhali nezinye izinto ezibonakalayo ezibonise ukuphakama kwayo ngaphezu kwezinye i-arc quenching medium ezifana nowoyela noma umoya. I-SF6 circuit breaker ihlukaniswe kakhulu ngezinhlobo ezintathu:

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

I-circuit breaker eyayisebenzisa umoya namafutha njengendawo evikelayo, amandla abo okucima i-arc ayakheka ayehamba kancane ngemva kokunyakaza kokuhlukaniswa kokuxhumana. Endabeni yama-high-voltage circuit breakers izakhiwo zokuqothulwa kwe-arc ngokushesha zisetshenziswa ezidinga isikhathi esincane sokululama ngokushesha, i-voltage iyakhula. Ama-circuit breaker e-SF6 anezakhiwo ezinhle kulokhu uma kuqhathaniswa nowoyela noma ama-air circuit breaker. Ngakho ku-voltage ephezulu efinyelela ku-760 kV, kusetshenziswa ama-circuit breaker e-SF6.

Izakhiwo zeSulfur hexafluoride Circuit Breaker

I-Sulfur hexafluoride inezinto ezinhle kakhulu zokuvikela i-arc kanye ne-arc quenching. Lezi zakhiwo ziyi

• Ayinambala, ayinaphunga, ayinabuthi, futhi ayishisi.
• Igesi ye-SF6 izinze ngokwedlulele futhi ayisebenzi, futhi ukuminyana kwayo kuphindwe kahlanu kunomoya.
• Ine-conductivity ephezulu yokushisa engcono kunomoya futhi isiza ezingxenyeni ezithwalayo zamanje ezipholile.
• Igesi ye-SF6 inamandla e-electronegative, okusho ukuthi ama-electron amahhala asuswa kalula ekukhishweni ngokwakhiwa kwama-ion angenayo.
• Inesakhiwo esiyingqayizivele sokuhlanganisa kabusha ngokushesha ngemva kokususwa kwenhlansi enika amandla umthombo. Isebenza ngokuphindwe ka-100 uma iqhathaniswa ne-arc quenching medium.
• Amandla ayo e-dielectric izikhathi ezingu-2.5 kunomoya kanye no-30% ngaphansi kwalawo kawoyela we-dielectric. Ngengcindezi ephezulu amandla e-dielectric egesi ayanda.
• Umswakama uyingozi kakhulu ku-SF6 circuit breaker. Ngenxa yenhlanganisela yomswakama kanye negesi ye-SF6, i-hydrogen fluoride iyakhiwa (uma i-arc iphazamiseka) engahlasela izingxenye ze-circuit breaker.

Ukwakhiwa kwe-SF6 Circuit Breakers

Ama-circuit breaker e-SF6 ikakhulukazi ahlanganisa izingxenye ezimbili, okungukuthi (a) iyunithi yesiphazamisi kanye (b) nesistimu yegesi.

Iyunithi yesiphazamisi - Le yunithi iqukethe abathintwayo abahambayo nabalungisiwe abahlanganisa isethi yezingxenye eziphethe njengamanje kanye ne-arcing probe. Ixhunywe ku-SF6 gas reservoir. Le yunithi iqukethe izikhala zamaslayidi kothintana nabo abahambayo ezivumela igesi enomfutho ophezulu ukuba ingene ethangini elikhulu.

I-Gas System - Isistimu yegesi yesifunda evaliwe isetshenziswa kuma-circuit breaker e-SF6. Igesi ye-SF6 iyabiza, ngakho ibuyiselwa emuva kokusebenza ngakunye. Le yunithi iqukethe amakamelo anomfutho ophansi naphezulu ane-alamu yokucindezela okuphansi kanye namaswishi ayisixwayiso. Lapho ingcindezi yegesi iphansi kakhulu ngenxa yokuthi amandla e-dielectric amagesi ehla futhi ikhono lokucisha i-arc lama-breaker lisengozini, khona-ke lolu hlelo lunikeza i-alamu yesixwayiso.

Umgomo Wokusebenza we-SF6 Circuit Breaker

Ezimweni ezijwayelekile zokusebenza, oxhumana nabo be-breaker bavaliwe. Uma iphutha lenzeka ohlelweni, abathintwayo bayahlukaniswa, bese kushaywa i-arc phakathi kwabo. Ukususwa kwabathintana nabo abahambayo kuvumelaniswa ne-valve engena kugesi we-SF6 wokucindezela okuphezulu ekamelweni eliphazamisa i-arc ngokucindezela okungaba ngu-16kg/cm^2.

Igesi ye-SF6 imunca ama-electron amahhala kumzila we-arc futhi yakhe ama-ion angasebenzi njengesithwali seshaji. Lawa ma-ion akhuphula amandla e-dielectric egesi futhi ngenxa yalokho i-arc iyacima. Le nqubo inciphisa ukucindezela kwegesi ye-SF6 kuze kufike ku-3kg / cm ^ 2 ngaleyo ndlela; igcinwa endaweni yokugcina ingcindezi ephansi. Le gesi enengcindezi ephansi idonselwa emuva endaweni yokugcina ingcindezi ukuze iphinde isetshenziswe.

Manje i-puffer piston pressure yosuku isetshenziselwa ukukhiqiza ingcindezi yokucisha i-arc ngesikhathi sokuvula kusetshenziswa ipiston exhunywe kothintana nabo abahambayo.

Inzuzo ye-SF6 circuit breaker

Ama-circuit breaker e-SF6 anezinzuzo ezilandelayo ngaphezu kwe-breaker evamile

1. Igesi ye-SF6 ine-insulating enhle kakhulu, yokucisha i-arc nezinye izakhiwo eziningi okuyizinzuzo ezinkulu zama-circuit breaker e-SF6.
2. Igesi ayishi futhi izinzile kumakhemikhali. Imikhiqizo yazo yokubola ayinaziqhumane ngakho-ke abukho ubungozi bomlilo noma ukuqhuma.
3. Ukukhishwa kukagesi kwehle kakhulu ngenxa yamandla aphezulu e-dielectric ye-SF6.
4. Ukusebenza kwayo akuthinteki ngenxa yokuhluka kwesimo somoya.
5. Inikeza ukusebenza okungenamsindo, futhi ayikho inkinga ye-voltage engaphezulu ngoba i-arc icima ku-zero yamanje yemvelo.
6. Akukho ukuncishiswa kwamandla e-dielectric ngoba azikho izinhlayiya zekhabhoni ezakhiwe ngesikhathi se-arcing.
7. Kudinga ukulungiswa okuncane futhi akukho sistimu yomoya ecindezelwe ebizayo edingekayo.
8. I-SF6 yenza imisebenzi eyahlukene njengokusula amaphutha ezintambo ezimfishane, ukushintsha, ukuvula izintambo zikagesi ezingalayishiwe, ne-reactor yesiguquli, njll. ngaphandle kwenkinga.

Ukungalungi kwama-circuit breaker e-SF6

1. Igesi ye-SF6 iyaminyanisa ngezinga elithile. Esimeni sokuvuza ethangini le-breaker, igesi ye-SF6 inzima kunomoya futhi yingakho i-SF6 ihlezi endaweni ezungezile futhi iholela ekucindezelekeni kwabasebenzi abasebenzayo.
2. Ukungena komswakama ku-SF6 breaker tank kuyingozi kakhulu ku-breaker, futhi kubangela ukwehluleka okuningana.
3. Izingxenye zangaphakathi zidinga ukuhlanzwa ngesikhathi sokunakekelwa ngezikhathi ezithile ngaphansi kwendawo ehlanzekile neyomile.
4. Isikhungo esikhethekile sidinga ukuthuthwa nokugcinwa kwekhwalithi yegesi.

(Sicaphuna lesi sihloko kule webhusayithi: https://circuitglobe.com/sf6-sulphur-hexaflouride-circuit-breaker.html)