Kev txiav txim siab tseem ceeb rau kev thermocouples hauv tshuaj lom neeg cov tshuaj lom?

Ntau cov haujlwm lag luam thiab cov kev tshawb fawb txuj ci thiab kev tshawb fawb yog nce raws tshuaj lom neeg, uas txhais tau lawv. Nyob rau hauv cov txheej txheem no, thermocouples yog qhov tseem ceeb thiab ntsuas kub thiab ntsuas kub feem ntau tsim nyog kom tau txais cov txiaj ntsig. Siv thermouples hauv cov txheej txheem tshuaj lom neeg hu rau ntau yam tseem ceeb los lav lawv txoj kev vam meej thiab kev ua tau zoo.
Qhov ntsuas kub los ua ntej ntawm cov ntsiab lus. Los ntawm qee qhov tsawg zaus hauv qee cov tshuaj squistesis cov kev cuam tshuam rau qee cov txheej txheem inorganic lossis kev sib txuas lus, tshuaj lom neeg muaj nyob hauv ntau qhov kub. Thermocots yuav tsum tau xaiv nyob ntawm lawv lub peev xwm los ntsuas qhov tseeb tsis pub dhau qhov kev ntsuas kub tshwj xeeb. Rau ib cov txheej txheem uas cuam tshuam nrog cov polymerisation ntawm qee qhov chaw polymers, uas feem ntau siv sijhawm ntawm 150 degree nrog cov ntsuas kub uas haum rau ntau - ib k-hom thermocuple-tuaj yeem ua haujlwm. Hloov siab, rau cov txheej txheem siab xws li kev tsim khoom ntawm tej yam ceramics, uas yuav ncav cuag qhov kub tshaj plaws li 1000 degree, ib hom platinum-rhodium-yuav yog qhov tseem ceeb.
Lwm qhov kev txiav txim siab tseem ceeb dua yog corrosion tsis kam. Ntau lub sijhawm, tshuaj lom neeg yuav tsum muaj cov corrosive corrosive tebchaw zoo li cov kuab tshuaj, acids, thiab alkalis. Cov tebchaw no yuav ua rau lub thermocouple cov khoom siv, ua rau tsis zoo thiab tsis muaj tseeb txhua lub sijhawm. Xaiv thermocouples nrog kev tiv thaiv sheaths tsim cov khoom siv corrosion-resistant cov ntaub ntawv yog li tseem ceeb heev. Nyob rau hauv tus txheej txheem muaj hydrochloric acid, piv txwv li thermocroup tsim ntawm stainless hlau lossis ib qho tshwj xeeb alloy muaj peev xwm tiv thaiv cov teebmeem ntawm cov kua qaub. Qhov no lav tias qhov thermocouple ua haujlwm thiab ua rau muaj kev ntseeg siab txhim khu kev qha tag nrho thoob plaws cov txheej txheem.
Lwm qhov xwm txheej ntawm qhov zoo tshaj plaws yog lub sijhawm thermocouple lub sijhawm. Hauv qee cov txheej txheem tshuaj lom neeg, qhov kub yuav hloov kho sai sai; Yog li, lub sijhawm qeeb qeeb ntawm Thermocouple yuav ua rau kev soj ntsuam tsis raug thiab tswj tau. Kev yoo mov thermoco yog xav tau rau cov kev tawm tsam zoo li qee qhov tawg lossis tsis tshua muaj kev phiv tshuaj uas tshwm sim nrawm dua. Cov thermocouples tau tsim los teb sai sai rau qhov kub thiab txias variations, yog li ntawd muab cov ntaub ntawv tiag tiag uas ua rau cov mob ceev.
Lwm qhov kev txiav txim siab yog thermocouple haum rau ib puag ncig cov tshuaj tiv thaiv. Lub thermocouple cov txheej txheem yuav tsum tsis txhob cuam tshuam cov qauv nrog cov ntsiab lus koom nrog hauv cov tshuaj tiv thaiv. Piv txwv li, cov thermocouple yuav tsum muaj cov khoom siv inert yog tias tus txheej txheem suav nrog lub xub ntiag ntawm qee yam kev txhawb nqa hluav taws xob. Txwv tsis pub, cov thermocouple tej zaum yuav paug cov tshuaj tiv thaiv lossis cov tshuaj tiv thaiv cov tshuaj tiv thaiv, yog li cuam tshuam txog qhov kev tawm tsam ntsuas qhov tseeb.
Tshwj xeeb hauv kev lag luam tshuaj lom neeg qhov twg thermocouple tej zaum yuav raug rau kev ntxhov siab txhua yam, thiab kev caij tsheb cycling, ruaj khov kuj yog qhov tseem ceeb tshaj plaws. Muaj zog tsim thermocots nrog kev ntseeg tau sib txuas yuav kov yeej cov teeb meem no thiab ua haujlwm ntawm kev ua haujlwm raws li npaj siab. Lub sijhawm ntev, txhim khu kev qha cov tshuaj lom neeg cov nroj tsuag loj-cov khoom siv txuas ntxiv thiab raug rau ntau lub zog-nyob ntawm lub zog thermocouple yog qhov tsim nyog.
Thaum kawg, tseem ceeb tsis zoo li qhov ntsuas kub, corrosion tsis kam, sib xyaw nrog kev siv tshuaj tiv thaiv kev siv tshuaj lom neeg hauv cov txheej txheem tshuaj lom neeg. Muaj qhov tseeb ntsuas thiab kev tswj hwm yog qhov tseem ceeb rau kev ua tiav ntawm cov tshuaj tiv thaiv cov tshuaj, tuaj yeem xaiv cov khoom lag luam uas tsim nyog rau cov tshuaj lom neeg thermocouple. Qhov tsim nyog xaiv thiab siv thermocouples yuav nyob ntawm qhov zoo tshwm sim raws li cov txheej txheem tshuaj lom neeg loj hlob thiab ua ntau cov txheej txheem.