Sulfur Hexafluoride (SF6) Circuit Breaker

A circuit breaker umo SF6 pasi pekumanikidzwa gasi inoshandiswa kudzima arc inonzi SF6 circuit breaker. SF6 (sarufa hexafluoride) gasi ine yakanakisa dielectric, arc quenching, makemikari uye zvimwe zvemuviri zvimiro zvakaratidza hukuru hwayo pane mamwe arc ekudzima masvikiro akadai seoiri kana mweya. Iyo SF6 yedunhu breaker inonyanya kukamurwa kuva mhando nhatu:

• Non-puffer piston circuit breaker
• Imwe-puffer piston circuit breaker.
• Kaviri-puffer piston circuit breaker.

Iyo yedunhu inotyora iyo yakashandisa mhepo neoiri seanodzivirira svikiro, arc yavo yekudzima simba inovaka yainonoka mushure mekufamba kwekuparadzaniswa kwekubatana. Panyaya ye high voltage circuit breakers kukurumidza arc kupera zvivakwa zvinoshandiswa izvo zvinoda nguva shoma kuti ikurumidze kupora, voltage inovaka. SF6 dunhu rinopwanya rine zvivakwa zvakanaka mune izvi zvichienzaniswa nemafuta kana mhepo inotyora. Saka mumagetsi akakwira anosvika 760 kV, SF6 circuit breakers inoshandiswa.

Zvivakwa zveSulfur hexafluoride Circuit Breaker

Sulfur hexafluoride ine yakanaka kwazvo insulating uye arc quenching zvivakwa. Zvinhu izvi ndizvo

• Haina ruvara, haina kunhuwa, haina chepfu, uye isingabatike gasi.
• SF6 gasi yakagadzikana zvakanyanya uye inert, uye density yayo inopeta kashanu kupfuura yemhepo.
• Iine high thermal conductivity zviri nani pane iyo yemhepo uye inobatsira mune zvirinani kutonhora zvino kutakura zvikamu.
• SF6 gasi rine simba remagetsi, zvinoreva kuti maerekitironi emahara anobviswa nyore kubva pakubuda nekuumbwa kwemaioni asina kunaka.
• Iyo ine yakasarudzika pfuma yekukurumidza kusanganisa mushure meiyo sosi inosimbisa spark yabviswa. Inonyanya kushanda ka100 kana ichienzaniswa nearc quenching medium.
• Simba rayo dielectric ndiyo 2.5 nguva kupfuura iyo yemhepo uye 30% pasi peiyo dielectric mafuta. Pakumanikidzwa kwepamusoro simba re dielectric regesi rinowedzera.
• Hunyoro hunokuvadza zvakanyanya kune SF6 circuit breaker. Nekuda kwekusanganiswa kwehunyoro uye SF6 gasi, hydrogen fluoride inoumbwa (apo arc inovhiringidzwa) inogona kurwisa zvikamu zvemagetsi edunhu.

Kuvakwa kweSF6 Circuit Breakers

SF6 mabreaker breaker anonyanya kuve nezvikamu zviviri, zvinoti (a) chinovhiringidza unit uye (b) gasi system.

Interrupter Unit - Ichi chikamu chine mafambisirwo anofamba uye akagadziriswa anosanganisira seti yezvino-inotakura zvikamu uye arcing probe. Yakabatana neSF6 gasi reservoir. Iyi unit ine masiraidhi mavhavha mune anofamba anobatika anobvumira iyo yakanyanya-kudzvanywa gasi kupinda mutangi huru.

Gasi Sisitimu - Iyo yakavharwa yedunhu gasi system inoshandiswa muSF6 matunhu mabreaker. Iyo SF6 gasi inodhura, saka inodzoserwa mushure mekushanda kwega kwega. Ichi chikwata chine makamuri akaderera uye akakwirira-ane simba repasi-pasi pamwe chete nemagetsi ekunyevera. Kana kudzvanywa kwegasi kwakadzikira zvakanyanya nekuda kweiyo dielectric simba remagasi rinodzikira uye arc kudzima kugona kweanopwanya ari mungozi, saka iyi system inopa yambiro.

Kushanda Nheyo yeSF6 Circuit Breaker

Mumamiriro akajairika ekushanda, mabatiro eanotyora akavharwa. Kana kukanganisa kukaitika muhurongwa, vanobatika vanodhonzwa nepakati, uye arc inorohwa pakati pavo. Kutamiswa kwevanofambidzana vanofamba kunopindirana nevhavha inopinda mumhepo yepamusoro-soro SF6 gasi mukamuri inovhiringidza arc pakumanikidzwa kwe16kg / cm ^ 2.

Iyo SF6 gasi inotora maerekitironi emahara munzira yearc uye inoita maion ayo asingaite semutakuri wechaji. Aya maion anowedzera dielectric simba regasi uye nokudaro arc inodzima. Iyi nzira inoderedza kudzvinyirira kweSF6 gasi kusvika ku3kg / cm ^ 2 saka; inochengetwa mumudziyo wepasi-pressure reservoir. Iri gasi rinodzika-kudzvanya rinodhonzwa richidzoserwa kunzvimbo ine simba repamusoro-soro rekushandisa zvakare.

Iye zvino zuva rezuva puffer piston pressure inoshandiswa kugadzira arc quenching pressure panguva yekuvhura oparesheni nepiston yakanamirwa kune vanofamba.

Kubatsira kweSF6 circuit breaker

SF6 matunhu anotyora ane zvinotevera zvakanakira pane zvakajairika breaker

1. SF6 gasi ine yakanakisa insulating, arc kudzimisa uye zvimwe zvakawanda zvivakwa zvinova zvakanakira zvikuru zveSF6 circuit breakers.
2. Iyo gasi haina-kupisa uye yakagadzikana mumakemikari. Zvigadzirwa zvavo zvekuora hazvisi kuputika uye nekudaro hapana njodzi yemoto kana kuputika.
3. Kubviswa kwemagetsi kwakadzikira zvakanyanya nekuda kwesimba repamusoro re dielectric reSF6.
4. Kuita kwayo hakukanganisike nekuda kwekusiyana kwemamiriro emuchadenga.
5. Inopa kushanda kusina ruzha, uye hapana pamusoro pedambudziko remagetsi nekuti arc inodzimwa pazviro zvazvino zero.
6. Iko hakuna kudzikiswa kwesimba re dielectric nekuti hapana kabhoni particles inoumbwa panguva ye arcing.
7. Inoda kuchengetedzwa kushoma uye hapana inodhura compressed air system inodiwa.
8. SF6 inoita mabasa akasiyana-siyana sekubvisa kukanganisa kwetambo pfupi, kushandura, kuvhura mitsara yekutumira isina kurodha, uye transformer reactor, nezvimwewo pasina dambudziko.

Zvakaipa zveSF6 circuit breakers

1. SF6 gasi iri kudzipwa kusvika pamwero wakati. Panyaya yekudonha mutangi rekupwanya, gasi reSF6 richirema kupfuura mweya uye nekudaro SF6 inogarwa munzvimbo dzakatenderedza uye inotungamira mukudzitirwa kwevashandi vanoshanda.
2. Kupinda kwehunyoro muSF6 breaker tank kunokuvadza zvakanyanya kune anotyora, uye zvinokonzeresa kutadza kwakati.
3. Izvo zvikamu zvemukati zvinoda kucheneswa panguva yekugadziriswa nguva nenguva pasi penzvimbo yakachena uye yakaoma.
4. Iyo yakakosha nzvimbo inoda kutakura uye kugadzirisa kwemhando yegesi.

(Tinotaura chinyorwa ichi kubva pawebhusaiti ino: https://circuitglobe.com/sf6-sulphur-hexaflouride-circuit-breaker.html)