Sulfur Hexafluoride (SF6) Mai Kashe Wuta

Ana amfani da na'urar da'ira wacce ake amfani da SF6 karkashin iskar gas don kashe baka ana kiranta SF6 circuit breaker. SF6 (sulphur hexafluoride) gas yana da kyakkyawan dielectric, arc quenching, sinadaran da sauran kaddarorin jiki waɗanda suka tabbatar da fifikon sa akan sauran hanyoyin kashe wuta kamar mai ko iska. An kasu kashi na SF6 zuwa nau'i uku:

• Fistan da'ira mai jujjuyawa mara bugu
• Single-puffer piston circuit breaker.
• Biyu-puffer fistan kewayawa.

Na'urar kashe wutar da'ira wacce ke amfani da iska da mai a matsayin matsakaicin insulating, ƙarfin kashe wutar su ya kasance a hankali bayan motsin haɗin gwiwa. A cikin yanayin babban ƙarfin lantarki na kewaye ana amfani da kaddarorin ɓarkewar baka mai sauri waɗanda ke buƙatar ƙarancin lokaci don farfadowa da sauri, ƙarfin lantarki yana ƙaruwa. SF6 na'ura mai ba da hanya tsakanin hanyoyin sadarwa suna da kyawawan kaddarorin a wannan batun idan aka kwatanta da na'urorin mai ko iska. Don haka a cikin babban ƙarfin lantarki har zuwa 760 kV, ana amfani da na'urorin kewayawa na SF6.

Kayayyakin sulfur hexafluoride Breaker

Sulfur hexafaluoride yana da kyawawan kaddarorin rufewa da sinadarai. Waɗannan kaddarorin sune

• Ba shi da launi, mara wari, mara guba, da iskar gas mara ƙonewa.
• Gas na SF6 yana da tsayin daka kuma ba ya aiki, kuma yawansa ya ninka sau biyar na iska.
• Yana da babban ƙarfin wutar lantarki mafi kyau fiye da na iska kuma yana taimakawa mafi kyawun sanyaya sassa na yanzu.
• Gas SF6 yana da ƙarfi na lantarki, wanda ke nufin ana cire electrons kyauta daga fitarwa ta hanyar samuwar ions mara kyau.
• Yana da ƙayyadaddun ƙayyadaddun ƙayyadaddun haɓakawa cikin sauri bayan an cire tushen kuzarin walƙiya. Yana da sau 100 mafi inganci idan aka kwatanta da matsakaicin kashe baka.
• Ƙarfin ƙarfinsa shine sau 2.5 fiye da na iska kuma 30% ƙasa da na man dielectric. A babban matsin ƙarfin dielectric na gas yana ƙaruwa.
• Danshi yana da illa sosai ga na'urar kewayawa ta SF6. Sakamakon haɗuwa da zafi da SF6 gas, hydrogen fluoride yana samuwa (lokacin da arc ya katse) wanda zai iya kai hari ga sassan masu fashewa.

Gina SF6 Mai Rarraba Wuta

SF6 na'ura mai ba da hanya tsakanin hanyoyin sadarwa sun ƙunshi sassa biyu, wato (a) naúrar katsewa da (b) tsarin iskar gas.

Sashin katsewa - Wannan naúrar ta ƙunshi maɓalli da kafaffen lambobi waɗanda suka ƙunshi saitin sassa masu ɗauka na yanzu da binciken harbi. An haɗa shi da tafkin gas na SF6. Wannan naúrar tana ƙunshe da fitilun faifai a cikin lambobi masu motsi waɗanda ke ba da izinin iskar gas mai ƙarfi cikin babban tanki.

Tsarin Gas - Ana amfani da tsarin iskar gas mai rufaffiyar a cikin SF6 masu fashewa. Gas na SF6 yana da tsada, don haka ana dawo da shi bayan kowane aiki. Wannan naúrar ta ƙunshi ƙananan ƙananan ɗakuna masu ƙarfi tare da ƙararrawar ƙararrawa tare da masu kashe faɗakarwa. Lokacin da matsa lamba na iskar gas ya ragu sosai saboda abin da ƙarfin dielectric na iskar gas ya ragu kuma ikon kashe wutar lantarki yana cikin haɗari, to wannan tsarin yana ba da ƙararrawa.

Ƙa'idar Aiki na SF6 Circuit Breaker

A cikin yanayin aiki na yau da kullun, lambobin sadarwa suna rufe. Lokacin da kuskure ya faru a cikin tsarin, ana cire lambobin sadarwa, kuma an buga baka a tsakanin su. Matsar da lambobi masu motsi suna aiki tare da bawul wanda ke shiga babban matsi na SF6 gas a cikin ɗakin katsewar baka a matsa lamba na kusan 16kg/cm ^ 2.

Gas na SF6 yana ɗaukar electrons kyauta a cikin hanyar baka kuma yana samar da ions waɗanda basa aiki azaman mai ɗaukar kaya. Wadannan ions suna ƙara ƙarfin dielectric na gas kuma saboda haka an kashe baka. Wannan tsari yana rage matsa lamba na SF6 gas har zuwa 3kg / cm ^ 2 haka; ana adana shi a cikin tafki mai ƙarancin ƙarfi. Ana mayar da wannan iskar gas mai ƙarancin ƙarfi zuwa babban tafki mai ƙarfi don sake amfani da shi.

Yanzu ana amfani da matsi na piston na yau da kullun don haifar da matsa lamba na arc quenching yayin aikin buɗewa ta hanyar fistan da ke manne da lambobi masu motsi.

Abubuwan da aka bayar na SF6

SF6 masu watsewar kewayawa suna da fa'idodi masu zuwa akan mai watsewar al'ada

1. Gas SF6 yana da insulating mai kyau, kashe baka da sauran kaddarorin da yawa waɗanda sune mafi girman fa'idodin SF6 masu fashewa.
2. Gas ɗin ba mai ƙonewa bane kuma yana da kwanciyar hankali. Kayayyakin lalata su ba masu fashewa bane don haka babu haɗarin wuta ko fashewa.
3. An rage yawan barin wutar lantarki saboda ƙarfin ƙarfin lantarki na SF6.
4. Ayyukansa baya tasiri saboda bambancin yanayin yanayi.
5. Yana ba da aiki mara hayaniya, kuma babu matsalar wutar lantarki saboda an kashe baka a sifilin halin yanzu.
6. Babu raguwa a cikin ƙarfin dielectric saboda ba a samar da barbashi na carbon a lokacin arcing.
7. Yana buƙatar ƙarancin kulawa kuma ba a buƙatar tsarin iska mai tsada mai tsada.
8. SF6 yana yin ayyuka daban-daban kamar share kurakuran gajeren layi, sauyawa, buɗe layukan watsawa waɗanda ba a buɗe ba, da reactor transfoma, da sauransu ba tare da wata matsala ba.

Rashin lahani na SF6 na'ura mai ba da hanya tsakanin hanyoyin sadarwa

1. SF6 gas yana shaƙa har zuwa wani wuri. Game da yabo a cikin tanki mai fashewa, iskar SF6 tana da nauyi fiye da iska kuma saboda haka SF6 yana zaune a cikin kewaye kuma yana haifar da shaƙar ma'aikatan.
2. Shigar da danshi a cikin tanki mai fashewar SF6 yana da illa sosai ga mai fasa, kuma yana haifar da gazawa da yawa.
3. Sassan ciki suna buƙatar tsaftacewa yayin kulawa na lokaci-lokaci a ƙarƙashin yanayi mai tsabta da bushewa.
4. Kayan aiki na musamman yana buƙatar sufuri da kiyaye ingancin iskar gas.

(Mun buga wannan labarin daga wannan gidan yanar gizon: https://circuitglobe.com/sf6-sulphur-hexaflouride-circuit-breaker.html)