Rwb thaiv tsev tsim ntawm Fastening Systems thiab Adaptation rau Electrified Kab
Dab tsi yog qhov yuav tsum tau ua rau cov ntsuas hluav taws xob tseem ceeb ntawm cov tshuab txuas rau hluav taws xob railways?
Lub rwb thaiv tsev tiv thaiv ntawm lub fastening system rau hluav taws xob railways yuav tsum muaj ntau tshaj los yog sib npaug zos rau 10 ^ 8Ω, uas yuav ua tau zoo tiv thaiv stray tam sim no los ntawm lub fastening Cheebtsam thiab xyuas kom meej hluav taws xob kev nyab xeeb ntawm txoj kab. Nws lub zog zaus tuaj yeem tiv taus qhov muaj peev xwm yuav tsum ncav cuag 30kV / 1min, thiab nws yuav tsis raug kev puas tsuaj los ntawm hluav taws xob hauv ib puag ncig siab -voltage kis tau tus mob, zam luv luv - Circuit Court faults. Cov insulating Cheebtsam ntawm fastening system yuav tsum muaj arc tsis kam, thiab yuav tsis raug hlawv thiab puas thaum instantaneous arc paug tshwm sim, tswj kev ruaj ntseg rwb thaiv tsev kev ua tau zoo. Qhov kev ncua deb ntawm cov txheej txheem rwb thaiv tsev yuav tsum siab dua lossis sib npaug li 120mm txhawm rau tiv thaiv kev ua haujlwm rwb thaiv tsev los ntawm kev txo qis vim muaj kuab paug saum npoo, hloov mus rau kab ib puag ncig nrog cov pa phem sib txawv. Tsis tas li ntawd, kev laus tsis kam ntawm cov khoom siv insulating yuav tsum ua tau raws li tus qauv. Nyob rau hauv ib puag ncig sab nraum zoov xws li raug tshav ntuj thiab los nag, qhov attenuation tus nqi ntawm rwb thaiv tsev ntsuas yuav tsum tau tswj tsawg dua los yog sib npaug li 5% ib xyoos twg.
Dab tsi yog qhov muaj pes tsawg leeg ntawm cov txheej txheem rwb thaiv tsev ntawm lub teb chaws tus qauv fastening system?
Cov txheej txheem rwb thaiv tsev ntawm lub teb chaws tus qauv fastening system yog tsim los ntawm insulating gaskets thiab insulating lub tes tsho. Cov insulating gaskets yog teem caij nruab nrab ntawm cov rail clips thiab cov ntsia hlau los cais cov hluav taws xob sib txuas ntawm cov tsheb ciav hlau thiab cov ntsia hlau. Lub tes tsho insulating yog lub tes tsho rau sab nraud ntawm lub bolts kom cais cov hlau sib txuas ntawm cov bolts thiab cov ntses thiab cov neeg pw tsaug zog, ua kom muaj kev tiv thaiv ob npaug. Cov insulating gaskets feem ntau yog ua los ntawm siab - lub zog nylon 66 cov khoom, uas muaj kev ua haujlwm zoo rwb thaiv tsev thiab siab compressive lub zog, thiab tuaj yeem dais preload ntawm cov tsheb ciav hlau clips yam tsis muaj deformation. Sab hauv phab ntsa ntawm lub tes tsho insulating yog muab los tiv thaiv - cov hlua khi los tiv thaiv lub tes tsho los ntawm kev tig thaum lub sijhawm teeb tsa thiab xyuas kom muaj kev ruaj ntseg ntawm cov rwb thaiv tsev. Tsis tas li ntawd, cov txheej txheem fastening ntawm qee qhov hnyav - cov kab tsheb thauj khoom yuav ntxiv cov kaus mom insulating ntawm lub taub hau ntsia liaj qhov rooj kom ntxiv dag zog rau kev tiv thaiv rwb thaiv tsev thiab tsis txhob cuam tshuam tam sim no los ntawm lub taub hau ntsia liaj qhov rooj.
Dab tsi yog qhov zoo ntawm cov qauv txawv teb chaws kev sib xyaw insulating fasteners?
Cov txheej txheem txawv teb chaws sib xyaw ua ke insulating fasteners txhaj-pwm cov txheej txheem rwb thaiv tsev thiab lub cev fastener rau hauv ib thooj, tshem tawm qhov xav tau ntxiv rau kev teeb tsa ntawm insulating gaskets thiab lub tes tsho, ua kom yooj yim txoj kev tsim kho thiab txhim kho kev txhim kho. Nws cov txheej txheej rwb thaiv tsev muaj ntau dua haum nrog lub fastener, tsis muaj kev pheej hmoo ntawm kev hloov pauv thiab poob ntawm cov khoom siv insulating, thiab kev ua haujlwm rwb thaiv tsev yog ruaj khov thiab txhim khu kev qha. Cov txheej rwb thaiv tsev ntawm cov khoom siv insulating sib xyaw ua ke yog ua los ntawm cov iav fiber ntau cov khoom siv ntxiv, uas nws lub zog muaj zog ntau dua li cov khoom siv nylon zoo tib yam, thiab tuaj yeem tiv taus qhov hnyav hnyav ntawm qhov hnyav - cov kab tsis muaj kev puas tsuaj. Qhov kev ncua deb ntawm qhov kev tsim no ntev dua, txog li 150 hli, yoog rau qhov chaw hnyav nrog cov pa phem thiab cov av noo siab, thiab tsis muaj qhov cuam tshuam rau qhov chaw flashover. Nyob rau tib lub sijhawm, kev sib koom ua ke insulating fasteners muaj kev tiv thaiv kev laus zoo dua, nrog rau kev pab cuam lub neej ntau dua 30 xyoo, uas txo qis kev ua haujlwm thiab kev saib xyuas tus nqi ntawm cov kab hluav taws xob.
Dab tsi yog cov ntsiab lus tseem ceeb ntawm kev tsim rwb thaiv tsev rau kev ceev cov kab ke ntawm high -altitude electrified railways?
Cov huab cua nyob rau hauv siab -altitude electrified railways yog nyias thiab lub rwb thaiv tsev lub zog txo. Lub rwb thaiv tsev tiv thaiv qhov ntsuas hluav taws xob ntawm cov txheej txheem fastening yuav tsum tau nce 20% -30% piv nrog cov kab dawb kom tiv thaiv kev puas tsuaj ntawm cov rwb thaiv tsev. Cov khoom siv insulating yuav tsum yog ua los ntawm UV- cov ntaub ntawv tiv taus. Cov hluav taws xob UV nyob rau hauv qhov siab - qhov siab yog qhov muaj zog, thiab cov khoom siv zoo tib yam yog qhov ua rau muaj kev laus thiab tawg. Txhim kho huab cua tiv thaiv tuaj yeem txuas ntxiv lub neej kev pabcuam ntawm cov khoom siv insulating. Cov txheej txheem rwb thaiv tsev ntawm lub fastening system yuav tsum tau ntxiv nrog kev tiv thaiv -condensation tsim. Qhov kub sib txawv nruab hnub thiab hmo ntuj nyob rau hauv siab - qhov siab qhov siab yog qhov loj, uas yog feem ntau ua rau condensation. Cov qauv tiv thaiv-condensation tuaj yeem zam qhov condensation adhering rau ntawm qhov chaw rwb thaiv tsev thiab ua rau cov rwb thaiv tsev ua haujlwm txo qis. Tsis tas li ntawd, qhov saum npoo ntawm cov khoom siv insulating yuav tsum tau kho nrog hydrophobicity kom txo tau cov adhesion ntawm dej vapor thiab av, kom ntseeg tau tias lub sij hawm ntev stability ntawm rwb thaiv tsev kev ua tau zoo. Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog yuav tsum tau ua kom huv si thiab sim cov khoom siv insulating, thiab tshem tawm cov av hauv lub sijhawm kom tsis txhob muaj kev cuam tshuam ntawm kev ua haujlwm rwb thaiv tsev.
Yuav ua li cas txhawm rau txheeb xyuas seb qhov kev ua haujlwm ntawm rwb thaiv tsev ntawm lub fastening system ua tau raws li tus qauv?
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