Leeb currents: yam ntxwv, xwm, kev tiv thaiv

Leeb currents - ib yam ntawm cov them hais qhia cov lus tsa suab uas tshwm sim nyob rau hauv lub ntiaj teb siv lub caij nyoog kawg no raws li ib tug qhia. Qhov txaus ntshai ntawm no phenomenon yog txoj kev loj hlob ntawm xeb hlau qhov chaw, uas yog nyob rau hauv lub ntiaj teb, los yog tsawg kawg ib nrab nyob rau hauv kev sib cuag nrog nws.

Leeb currents tshwm sim nyob rau hauv lub rooj plaub uas ntau hlau daim (cov co yuav tsum ua kev) ntawm tej uas muaj kev sib cuag, muab tso rau hauv tej electrolytic kua. Qhov no kua yuav ua tau txhua yam, tsuas yog distilled dej. Yog li nrog ua kub lub conductivity ntawm lub ntsha yuav tsuas ua rau kom, raws li rau Piv txwv li muaj tshwm sim nrog ships uas tsiv los ntawm lub sab qaum teb seas tauj lub teb chaws.

Leeb currents yuav tshwm sim nyob rau hauv tus ntawm ob sab hauv thiab sab nraud qhov chaw, xws li, piv txwv li, ib tug luv luv Circuit Court nyob rau hauv qhov hluav taws xob network, tsis ncaj ncees lawm kev twb kev txuas ntsiab edektroprovodki pluag rwb thaiv tsev. Rau loj tsev lug uas yuav xyuam xim ntaus nqi tej chav tsev lub tsev, taug nyob rau hauv lawv tam sim no ntaub ntawv vim lub fact tias nyob nruab nrab ntawm lub grounding ntsiab nyob rau hauv ntau qhov chaw ntawm lub tsev ntaub ntawv ib tug neeg txawv.

Raws li yog lub npe hu, tej hlau qauv yuav tsum tau xauv rau xoom-tswv yim neeg xyuas pib ntawm lub Switchgear. Xws li ib tug system yog lub system npe equalization potentials, nws yog tsim nyog los xyuas kom meej tias ntawm lub grounding ntsiab tsis tshwm sim qhia hluav taws xob tam sim no.

Ib qho tseem ceeb yog vim li cas rau cov tsim ntawm stray currents thiab, raws li ib tug tshwm sim, galvanic xeb yog ib tug ntau hloov qhov nyob rau hauv hlau kav nrog yas. Qhov no yog hais tias nyob rau hauv cov ntaub ntawv no, ntawm lub ntsiab nraus metallosvyaz risers, uas yog grounded los ntawm cov equipotential tsevneeg, thiab ntxiv cov kav dej uas yog, piv txwv li, ib tug phuam rail. Nyob rau hauv cov ntaub ntawv no, ntawm lub riser yeeb nkab thiab cov koom haum pab tej zaum txawv yog tsim, thiab yog hais tias muaj yog ib tug neeg xyuas pib, e.g., ciav dej, ces ib tug hluav taws xob tam sim no therebetween.

Kev pab tiv thaiv los ntawm stray currents yog rau equalize lub potentials ntawm cov hlau lug. Nws yog txaus rau koj mus cuag lub ntsiab thiab koom haum pab riser kav, ces tau rau lub rov tshwm sim ntawm lub fais tam sim no disappears.

Lwm txaus ntshai yog qhov tseeb hais tias lub tsiv dej los ntawm cov kav dej, uas, raws li hais saum toj no, ib qho zoo heev neeg xyuas pib, yog lossi nyob rau hauv kev sib cuag nrog cov kav dej lawv tus kheej - dielectrics. Los ntawm no kev sib txhuam tshwm sim hluav taws xob tam sim no, uas nyob rau hauv raws li qhov yooj yim kev cai lij choj, yuav noog rau qhov xaus ntawm lub hlau lug. Cov uas ua static hluav taws xob yuav ua si ib qho tseem ceeb luag hauj lwm nyob rau hauv uas tawm stray currents yuav muaj ntau lub hwj chim. Qhov no yuav tsum tau coj mus rau hauv tus account.

Yog li, lub stray currents yog heev nyob rau hauv lub neej txhua hnub. Kom tsis txhob lawv tej kev phem cawv, yuav tsum tau ceev faj heev kom ze rau grounding tag nrho cov hlau lug nyob rau hauv lub tsev, tshwj xeeb tshaj yog nyob rau hauv view ntawm lub fact tias ib feem ntawm cov yeeb nkab yog tam sim no hloov los ntawm hlau thiab yas.