Dab tsi yog qhov yuam kev ntawm ob -conduit mounted box- hom platinum tiv thaiv tus pas ntsuas kub

Feem ntau, cov teeb meem nrog ob -conduit mounted box- hom platinum tiv thaiv tus pas ntsuas kub yog tshwm sim los ntawm kev sib xyaw ntawm ib puag ncig corrosion thiab cov qauv tsim tsis zoo, tsis yog los ntawm cov teeb meem nrog ib feem. Lub thawv sib txuas feem ntau yog qhov kev sib txuas tsis muaj zog tshaj plaws, thiab thaum lub foob tsis ua haujlwm, nws tuaj yeem teeb tawm cov tshuaj tiv thaiv saw. Fluororubber los yog silicone roj hmab seals hnav tawm sai heev thaum raug kub, high humidity, los yog tshuaj rau lub sij hawm ntev. Qhov no ua rau lawv tawv, tawg, los yog lo, cia ya raws, ntsev tsuag, los yog corrosive gasses nkag mus rau ntawm lub cable kom tsawg. Thaum ya raws tsim, cov txheej txheem conductive sai sai rau ntawm lub davhlau ya nyob twg. Qhov no ua rau lub rwb thaiv tsev tiv thaiv poob qis dua 10MΩ, lossis txawm tias qis dua 1MΩ. Qhov no tuaj yeem ua rau cov teeb liab ntws, dhia, lossis ua rau lub tswb cuav. Yog tias tsis kho tam sim ntawd, cov tooj liab terminals yuav corrode thiab tig dub, uas yuav ua rau kev tiv thaiv kev tiv thaiv siab dua thiab kev ntsuas tsawg dua los yog qhib circuits.

Cov neeg feem ntau tsis pom muaj teeb meem nrog cov txheej txheem txhuas, txawm hais tias lawv muaj lub luag haujlwm rau ntau dua 30% ntawm kev ua tsis tiav. Yog tias tsis muaj qhov chaw tso cua sov txaus tso tseg thaum lub sijhawm teeb tsa, lossis yog tias cov xaim hlau tsis muaj qhov rov ua dua S-zoo li tus arc ntawm yam tsawg 200mm, hlau qaug zog yuav tshwm sim dhau sijhawm vim thermal cycling thiab mechanical vibration. Lub ntsiab lus tawg feem ntau tshwm sim nyob rau hauv 50mm ntawm qhov sib txuas ntawm lub thawv kom tau txais, thiab nws tshwm sim raws li kev tiv thaiv tsis kawg thiab tsis muaj kev nyeem ntawv ntawm qhov ntsuas. Lub platinum hlau luv luv yog qhov txaus ntshai dua. Thaum lub raj tiv thaiv sab nraud tau pitted, corrosive media nkag mus rau hauv kab noj hniav, ua rau platinum hlau kov lub tes tsho hlau. Qhov no tsim ib lub voj hauv av, uas ua rau qhov tsis kam poob thiab kev nyeem ntawv kub kom nyob qis. Nws yog ib qho nyuaj rau nrhiav tau qhov teeb meem no, thiab nws yog feem ntau yuam kev rau ntsuas drift.


Lub raj tiv thaiv qhov kawg - ntawm - lub neej yog tshwm sim los ntawm corrosion. Yog tias lub raj sab nrauv yog ua los ntawm 304 lossis 316L stainless hlau thiab ib puag ncig muaj cov tshuaj chloride ions, H₂S, lossis cov kua qaub uas muaj zog, qhov chaw pitting corrosion tseem yuav tshwm sim, txawm tias muaj ob - txheej txheej. Corrosion pib raws li qhov chaw pitting, uas maj mam hloov mus rau hauv qhov tob tob thiab thaum kawg tawg los ntawm lub raj. Txawm hais tias lub raj sab hauv tuaj yeem tsim los ntawm cov khoom siv zoo dua, cov txheej txheem vuam tsis zoo yuav ua rau micro- tawg ntawm argon arc vuam vim yog thermal stress concentration. Cov kab nrib pleb no loj dua lub sijhawm thaum qhov kub hloov pauv, uas ua rau cov kab noj hniav sab hauv tsis muaj cua. Nyob rau lub sijhawm no, qhov kev tiv thaiv insulating yuav qis dua thaum kub nce. Qhov no hu ua "temperature-dependent to leakage."

Tsis txhim kho thiab tswj cov khoom yog qhov zais cia ntawm cov teeb meem no. Cov hlau lead yuav nyob rau hauv qhov kev ntxhov siab tsis tu ncua yog tias cov flanges tau ruaj khov thiab tsis muaj qhov zawv zawg dawb ntawm qhov tsawg kawg nkaus 5 hli. Yog hais tias lub junction box npog yog ntsia downwards yam tsis muaj qhov nqes hav dej, condensation yuav tsim. Yog tias tsis muaj kev tiv thaiv kev tiv thaiv tsis tu ncua, kev nkag mus ntawm cov dej noo yuav mus tsis pom . 75% ntawm qhov ua tsis tiav thaum ntxov tsis yog tshwm sim los ntawm qhov tsis raug, tab sis tsis ua tib zoo saib cov teeb meem tseem ceeb. Txawm li cas los xij, cov yeeb nkab sab nrauv tuaj yeem tawg thiab dej tuaj yeem nkag mus rau hauv lub thawv sib txuas tib lub sijhawm, uas yog hu ua "ob chav tsis ua hauj lwm saw." Qhov no tshwm sim 37% ntawm lub sijhawm nyob rau hauv cov xwm txheej hnyav heev, xws li pyrolysis furnaces thiab seawater desalination chaw. Tom qab qhov no tshwm sim, kho lub thawv sib txuas ib leeg yuav tsis kho qhov teeb meem. Cov yeeb nkab tiv thaiv yuav tsum tau kuaj xyuas kev puas tsuaj, txwv tsis pub qhov teeb meem yuav tshwm sim dua.