Dab tsi zoo ua ntsev da dej sov thermocouples muaj kev kho hlau?

Kev kho cov hlau feem ntau yuav tsum muaj qhov ntsuas kub kho kom sov los ua cov cwj pwm uas xav tau thiab qhov zoo ntawm cov khoom tiav lawm hlau. Ntsev da dej da dej tau siv ntau yam hauv kev kho mob hlau, thiab cov thermocorochples siv hauv cov chaw ua cua sov ua haujlwm. Ntsev da dej kom sov muab cov yam ntxwv tshwj xeeb uas ua rau lawv muaj txiaj ntsig zoo rau kev ua tiav.
Ib qho ntawm cov txiaj ntsig tseem ceeb yog lawv lub peev xwm kom tau nyiaj dhau high kub. Ntsev da dej da dej khiav ntawm huab cua sov heev, feem ntau xws li 400 degree mus rau 1200 degree, nyob ntawm txoj kev kho mob hlau. Thermocouples siv nyob rau hauv cov chaw ua hluav taws xob no yuav tsum tau tsim los ntawm cov ntaub ntawv uas tuaj yeem txhawb nqa cov cua sov zoo kawg li los yog poob lawv qhov kev tsis raug. Alloys zoo li Platinum-rhodium, tungsten-rhenium, lossis cov npib tsib xee-roofe tau dav ua haujlwm uas muaj qhov txaus-kub siab ruaj khov. Piv txwv li, nyob rau hauv ib rooj plaub ua kom tawv nqaij ua kom sov, lub cub hluav taws xob tau ua haujlwm ntawm nws cov khoom siv hluav taws xob kom zoo.
Tseem muaj lwm yam txiaj ntsig zoo yog corrosion tsis kam. Sab hauv lub ntsev da dej ua kom sov, qhov chaw ib puag ncig yog corrosive heev thiab muaj ntau salts thiab tshuaj sib txuas. Cov tebchaw no sai thuam cov ntaub ntawv nquag, yog li ua rau thermocouples tsis muaj. Kev tiv thaiv sheaths ua los ntawm corrosion-resistant cov ntaub ntawv nrog rau Stainless hlau, inconel, lossis tshwj xeeb ceramics txhais tau ntsev da dej thermocouples. Cov sheaths tiv thaiv cov tshuaj ntshiab thermoelectric los ntawm kev ua corrosive ntawm cov ntsev thiab cov tebchaw. Qhov no lav tias, txawm tias nyob ib puag ncig xav tau ntawm cov ntsev ua kom sov, lub thermocouple tuaj yeem khaws nws cov kev ua tau zoo thiab muab cov ntsuas ntsuas kub ntev dua ntev ntev.
Kev kho hlau nyob ntawm qhov ntsuas kub thiab txias. Cov yam ntxwv ntawm cov hlau tuaj yeem sib txawv tau zoo txawm tias yog qhov sib txawv me me. Qhov ntsuas rau cov qauv ntsuas siab, ntsev da dej rauv thermocotrass muaj cov ntaub ntawv txhim khu kev qha thiab muaj zog. Zoo meej kev tswj kub yog qhov yuav tsum tau nyob rau hauv cov txheej txheem xws li tempering lossis analing kom tau txais lub siab tawv, muaj zog, thiab kev sib luag ntawm cov hlau. Cov thermocouples 'muaj kev nyeem kom tau muab hloov kho sai sai, yog li lav cov txheej txheem kev kho mob hnyav yog ua raws.
Lwm qhov txiaj ntsig zoo yog ntsev ua pa tawm kom sov sov thermocoupple distability. Lub tshuab da dej rauv rauv rauv ceev cov tshuab ntawm kev siv tshuab ntawm kev siv tshuab, thermal cycling, thiab kev txav lub cev ntawm cov ntsev molten. Thermocoples yuav tsum muaj zog txaus los tiv thaiv cov neeg kho tshuab thauj khoom tsis muaj tawg. Txoj kev ua haujlwm ntawm cov ntsev ua kom muaj kev sib xws yuav ntsib los ntawm cov khoom siv thermocouple nrog cov qauv muaj zog thiab muaj kev vam meej sib txuas cov txheej txheem. Qhov no ua rau lub sijhawm lav tau tias qhov thermocouple yuav ua rau muaj kev ua haujlwm ntawm cov txheej txheem hlau, yog li ntawd kev xav tau hloov mus thiab txo qis dua ntawm downtime.
Ntxiv mus, cov tshuaj tiv thaiv ntawm ntsev da dej rhaub dej sov thermocots yog qhov zoo. Hauv kev kho hlau, qhov twg yog qhov twg ceev kev hloov pauv tej zaum yuav tshwm sim thoob plaws hauv theem ntawm cov txheej txheem, lub peev xwm kom tau txais nrawm thiab ntsuas kub heev yog qhov tseem ceeb. Cov thermocouples yog tsim los tawm tsam sai sai rau qhov kub thiab txias hloov pauv, muab cov ntaub ntawv tiag tiag. Piv txwv li, thaum ib qho kev raus dej ua ntej hauv cov ntaub qhwv ntsev rau ntawm molten sai thiab xa cov ntaub ntawv rau cov kev tswj hwm, tso cai rau kev hloov kho tam sim ntawd kom muaj qhov ntsuas kub.
Ntsev da dej kom sov nrog kev kho mob ntau, suav nrog cov kev kub siab, ua rau muaj kev kub ntxhov, thiab cov sijhawm teb zoo. Cov qauv no ua rau lawv tsis tseem ceeb rau kev ua kom zoo, xwm yeem, thiab ua haujlwm ntawm kev kho cov hlau hauv ntsev ua kom sov. Raws li qhov kev xav tau rau cov khoom lag luam hlau zoo txuas ntxiv kom sawv, lub luag haujlwm ntawm cov thermocouples hauv kev kho mob hlau yuav tsuas yog ua qhov tseem ceeb ntxiv.