Vim li cas Tungsten-Rhenium Thermocouples yog qhov kev xaiv zoo tshaj plaws rau qhov tseeb?

Hauv kev ntsuas qhov kub thiab txias, kev tshawb nrhiav qhov tseeb yuav siv sij hawm pem hauv ntej. Ntawm cov sib txawv ntawm cov thermocouples nyob rau hauv kev ua lag luam, tungsten-rhenium thermocouples sawv tawm raws li qhov kev xaiv zoo heev rau kev ncav cuag qib siab ntawm precision; muaj ntau qhov laj thawj los ua pov thawj qhov kev lees paub no.
Tungsten-rhenium thermocouples ua ntej ntawm tag nrho cov muaj qhov zoo-kub stability. Nrog lub melting point ntawm 3300 degree, tungsten ib leeg yog siab heev; ua ke nrog rhenium, qhov ruaj khov ntawm cov hlau ntawm qhov kub thiab txias tau zoo dua. Qhov no cia cov thermocouples khiav tsis tu ncua nyob rau hauv high-temperature tej yam kev mob uas yuav sai sai ua rau lwm yam kub sensors. Tungsten-rhenium thermocouples, piv txwv li, tuaj yeem saib xyuas thiab txhawb nqa lawv cov kev ua tau zoo rau lub sijhawm ntev hauv cov qhov cub kub kub uas siv nyob rau hauv metallurgical sector, qhov kub yuav ncav cuag ntau txhiab degrees Celsius. Kev ua kom zoo thiab ua tau zoo ntawm kev lag luam kev lag luam nyob ntawm seb qhov ntsuas kub npaum li cas nyob ntawm qhov kev ruaj ntseg no.
Lub linear kub-electromagnetic quab yuam (EMF) txuas ntawm tungsten-rhenium thermocouples kuj pab piav qhia lawv qhov tseeb. Lub thermocouple tsim EMF uas yog proportional rau qhov kub thiab txias sib txawv ntawm ob junctions. Tshaj qhov kub ntau yam, kev sib txuas hauv tungsten-rhenium thermocouples yog linear heev. Qhov no ua rau calibrating thiab tau txais qhov ntsuas kub kom raug yooj yim dua vim tias qhov tso zis hluav taws xob los ntawm cov thermocouple sib txawv hauv kev kwv yees thiab ua raws li kev hloov pauv kub. Ntawm qhov tod tes, qee yam lwm yam thermocouple tej zaum yuav muaj kev sib txuas uas tsis yog-linear, uas yuav ua rau muaj kev ua yuam kev thiab tsis paub tseeb hauv qhov ntsuas kub tshwj xeeb ntawm qhov kub siab heev.
Lwm qhov txiaj ntsig tseem ceeb yog tungsten-rhenium thermocouple rhiab heev. Vim lawv qhov txawv txav ntawm qhov kub thiab txias, cov thermocouples no tuaj yeem txheeb xyuas qhov txawv me ntsis ntawm qhov kub thiab txias. Cov ntawv thov xws li cov khoom siv hluav taws xob semiconductor lossis cov chaw tshawb fawb tshawb fawb qhov chaw tswj qhov kub thiab txias yog qhov tseem ceeb nyob ntawm qhov tshwj xeeb. Hauv cov txheej txheem tsim khoom semiconductor, piv txwv li, txawm tias qhov sib txawv ntawm qhov kub me ntsis tuaj yeem cuam tshuam loj rau qhov zoo thiab kev ua haujlwm ntawm cov khoom siv semiconductor raug tsim. Tungsten-rhenium thermocouples 'zoo rhiab heev pab cov kws tshawb fawb thiab engineers kom nruj tswj qhov kub thiab txias, yog li lav qhov kev tsim cov khoom zoo.
Ntxiv mus, nyob rau hauv tej yam kev mob tungsten-rhenium thermocouples muaj kev tiv thaiv corrosion thiab oxidation. Nyob rau hauv inert los yog txo cov huab cua raws li hydrogen los yog lub tshuab nqus tsev, lawv qhia zoo tshuaj stability; Txawm hais tias tungsten thiab rhenium tuaj yeem oxidize ntawm qhov kub thiab txias, lawv tsis tsim nyog rau kev siv hauv oxidizing ib puag ncig yam tsis muaj kev tiv thaiv txaus. Qhov no ua rau lawv muaj txiaj ntsig zoo hauv ntau qhov kev xav tau uas lwm cov thermocouples yuav ua tsis tiav los ntawm oxidation lossis corrosion. Tungsten-rhenium thermocouples tuaj yeem siv rau hauv qhov loj dua ntawm cov ntawv thov los ntawm kev siv cov ntaub thaiv npog tsim nyog lossis cov txheej txheem, yog li ua kom lawv qhov yooj yim thiab raug.
Sib nrug los ntawm lawv cov txiaj ntsig kev, hauv qee qhov kev siv tungsten-rhenium thermocouples muab kev txuag nyiaj txiag. Txawm hais tias rhenium yog cov hlau tsis tshua muaj thiab kim heev, tag nrho cov nqi ntawm tungsten-rhenium thermocouples yuav muaj kev sib tw nrog rau qee yam kev ntsuas kub siab, tshwj xeeb yog cov tsim los ntawm cov hlau tseem ceeb xws li platinum lossis rhodium. Hauv cov haujlwm uas xav tau ntau qhov ntsuas kub, tungsten-rhenium thermocouples tuaj yeem muab cov nqi txo qis. Qhov no ua rau lawv txaus siab rau kev siv qhov twg tus nqi-zoo thiab qhov tseeb yog qhov tseem ceeb sib npaug.
Txhawm rau lav lawv qhov tseeb, tungsten-rhenium thermocouples yuav tsum, txawm li cas los xij, yuav tsum tau siv nrog kev tuav thiab calibration. Cov thermocouples no yuav tsum tau tsim nyob rau hauv kev saib xyuas zoo los lav qhov sib xws ntawm cov khoom siv thiab kev sib tshuam zoo. Cov txheej txheem calibration uas tsim nyog yuav tsum tau siv los txiav txim siab txog qhov kev hloov pauv ntawm qhov kub thiab txias-EMF txuas lub sijhawm. Txawm li cas los xij, tungsten-rhenium thermocouples yog qhov kev xaiv zoo tshaj plaws rau ntau yam kev siv uas xav tau qhov tseeb raws li, siv tau zoo, lawv tuaj yeem muab cov kev ntsuas kub zoo heev thiab ntseeg tau.
Tungsten-rhenium thermocouples yog qhov kev xaiv zoo tshaj plaws rau qhov tseeb hauv qhov dav dav ntawm kev ntsuas qhov ntsuas kub vim tias lawv muab kev sib xyaw ua ke ntawm qhov kub thiab txias, kev sib raug zoo EMF, siab rhiab heev, tiv thaiv oxidation thiab corrosion (hauv qee qhov chaw), thiab tus nqi- kev ua tau zoo. Lawv cov yam ntxwv tshwj xeeb thiab kev ua tau zoo sib txawv ntawm lwm hom thermocouples thiab muab lawv ua cov cuab yeej tsim nyog rau cov haujlwm thiab kev kawm tshawb fawb nyob ntawm qhov ntsuas kub thiab kev saib xyuas.