Umsebenzi Wokushintsha Umthwalo

Iinkinobho yokulayishaiyithuluzi lokushintsha phakathi kwe-circuit breaker kanye ne-isolation switch. Inedivayisi elula yokucisha i-arc, enganqamula i-load current elinganisiwe kanye ne-overload current ethile, kodwa ayikwazi ukunqamula i-short-circuit current.

Iinkinobho yokulayishaisetshenziswa kakhulu ukuphula nokuvala ugesi womthwalo, kanti inkinobho yomthwalo ingasetshenziswa futhi kanye ne-fuse enamandla aphezulu ukuze ithathe indawo ye-circuit breaker. Ngenxa yokuthi inkinobho yomthwalo kulula ukuyisebenzisa futhi intengo yayo iyafaneleka, inkinobho yomthwalo isetshenziswa kabanzi ohlelweni lwenethiwekhi yokusabalalisa lwe-10kV. Ukukhetha okunengqondo kokushintsha komthwalo ekwakhiweni kubaluleke kakhulu ukuqinisekisa ukusebenza okuphephile nokuthembekile kwegridi yamandla.

Inqubo yokusebenza yeswishi yokulayisha imi kanje: lapho ibhuleki livulwa, ngaphansi kwesenzo sesiphethu esivulayo, umgodi oyinhloko ujikeleza ngokwewashi. Ngakolunye uhlangothi, i-piston iya phezulu ngokusebenzisa indlela ye-crank-slider ukuze icindezele igesi; ngakolunye uhlangothi, ngokusebenzisa amasethi amabili endlela yokuxhumanisa enamabha amane. Uhlelo lokudlulisa olwakhiwe lwenza ummese oyinhloko uvule kuqala, bese lusunduza ummese wokucisha i-arc ukuvula ukuxhumana kwe-arc, bese umoya ocindezelwe ku-cylinder ukhipha i-arc nge-nozzle.

Isimiso sokusebenza seswishi yomthwalo we-voltage ephezulu sifana nese-circuit breaker. Ngokuvamile, kufakwa idivayisi elula yokucisha i-arc, kodwa isakhiwo sayo silula. Isithombe sibonisa iswishi yomthwalo womoya ocindezelwe. Inqubo yaso yokusebenza imi kanje: lapho ibhuleki livulwa, ngaphansi kwesenzo sesipilingi esivulayo, ishafti eyinhloko ijikeleza ngokwewashi. Ngakolunye uhlangothi, i-piston iya phezulu ngokusebenzisa indlela ye-crank-slider ukuze icindezele igesi.

Ngakolunye uhlangothi, ngohlelo lokudlulisa olwakhiwe ngamasethi amabili e-four-bar linkage mechanism, ummese oyinhloko uyavulwa kuqala, bese kuthi ummese wokucisha i-arc ucindezelwe ukuvula i-arc contact, bese umoya ocindezelwe ku-cylinder ukhiphe i-arc nge-nozzle. Lapho uvala, ngomshafti oyinhloko kanye nohlelo lokudlulisa, i-blade eyinhloko kanye ne-arc-extinguishing blade zijikeleza ngokwewashi ngesikhathi esifanayo, bese i-arc contact ivalwa kuqala; umshafti oyinhloko uyaqhubeka nokujikeleza, ukuze i-main contact ivalwe kamuva.

Ngesikhathi senqubo yokuvala, isiphethu sokuvula sigcina amandla ngesikhathi esifanayo. Njengoba inkinobho yokulayisha ingakwazi ukuphula ugesi we-short-circuit, ivame ukusetshenziswa kanye ne-fuse ene-high-voltage ekhawulela ugesi. Umsebenzi we-current-limiting we-fuse ene-current-limiting awukwazi nje ukuqeda umsebenzi wokuphula ugesi, kodwa futhi unciphise kakhulu ukushisa okubangelwa ugesi we-short-circuit kanye namandla kagesi.