Cummins kub thiab siab sensor siab tswb hloov 4921479

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Nws cov ntsiab lus rhiab tsis nyob rau hauv kev sib cuag nrog cov khoom ntsuas, uas tseem hu ua qhov ntsuas kub tsis sib cuag.Cov cuab yeej no tuaj yeem siv los ntsuas qhov kub thiab txias ntawm cov khoom txav mus los, lub hom phiaj me me thiab cov khoom uas muaj peev xwm ua kom sov me me lossis hloov kub ceev (ntev), thiab tseem tuaj yeem siv los ntsuas qhov kub ntawm qhov kub thiab txias.

Feem ntau siv tus pas ntsuas kub tsis sib cuag yog raws li txoj cai yooj yim ntawm lub cev hluav taws xob thiab hu ua hluav taws xob ntsuas hluav taws xob.Radiation thermometry suav nrog txoj kev ci ntsa iab (saib optical pyrometer), txoj kev hluav taws xob (saib hluav taws xob pyrometer) thiab txoj kev colorimetric (saib tus pas ntsuas kub xim xim).Txhua hom hluav taws xob thermometry txoj kev tsuas tuaj yeem ntsuas qhov sib thooj photometric kub, hluav taws xob kub lossis kub kub colorimetric.Tsuas yog qhov ntsuas kub rau lub cev dub (ib yam khoom uas nqus tag nrho cov hluav taws xob tab sis tsis cuam tshuam lub teeb) yog qhov ntsuas kub tiag tiag.Yog tias koj xav ntsuas qhov ntsuas kub ntawm qhov khoom, koj yuav tsum kho qhov emissivity ntawm cov khoom nto.Txawm li cas los xij, qhov emissivity saum npoo ntawm cov ntaub ntawv tsis yog nyob ntawm qhov kub thiab qhov ntev, tab sis kuj nyob rau ntawm lub xeev nto, txheej thiab microstructure, yog li nws yog qhov nyuaj rau kev ntsuas kom raug.Hauv kev tsim khoom tsis siv neeg, feem ntau yuav tsum tau siv hluav taws xob thermometry los ntsuas lossis tswj qhov kub thiab txias ntawm qee yam khoom, xws li steel strip dov kub, yob kub, forging kub thiab kub ntawm ntau yam hlau molten nyob rau hauv smelting rauv los yog crucible.Hauv cov xwm txheej tshwj xeeb no, nws yog qhov nyuaj heev los ntsuas qhov emissivity ntawm cov khoom nto.Rau kev ntsuas tsis siv neeg thiab tswj cov khoom kub ntawm qhov chaw, ib qho ntxiv reflector tuaj yeem siv los tsim cov kab noj dub nrog qhov ntsuas qhov chaw.Kev cuam tshuam ntawm cov hluav taws xob ntxiv tuaj yeem txhim kho cov hluav taws xob zoo thiab muaj txiaj ntsig emission coefficient ntawm qhov ntsuas qhov chaw.Siv cov txiaj ntsig zoo emission coefficient, ntsuas qhov ntsuas kub yog kho los ntawm qhov ntsuas, thiab thaum kawg qhov ntsuas kub ntawm qhov ntsuas qhov chaw tuaj yeem tau txais.Qhov feem ntau siv daim iav ntxiv yog daim iav hemispherical.Lub diffuse hluav taws xob ntawm qhov ntsuas qhov chaw nyob ze ntawm qhov chaw ntawm lub pob tuaj yeem cuam tshuam rov qab mus rau saum npoo los ntawm daim iav hemispherical los tsim cov hluav taws xob ntxiv, yog li txhim kho qhov zoo emission coefficient, qhov twg ε yog emissivity ntawm cov khoom nto thiab ρ yog lub reflectivity. ntawm daim iav.Raws li kev ntsuas hluav taws xob ntawm qhov ntsuas kub tiag tiag ntawm cov pa roj thiab cov kua dej tawm, cov txheej txheem ntawm kev ntxig cov khoom siv hluav taws xob rau cov khoom siv hluav taws xob mus rau qhov tob tob los tsim cov kab noj hniav dub tuaj yeem siv tau.Qhov zoo emission coefficient ntawm cylindrical kab noj hniav tom qab thermal equilibrium nrog nruab nrab yog tau los ntawm kev xam.Hauv kev ntsuas thiab tswj tsis siv neeg, tus nqi no tuaj yeem siv los kho qhov ntsuas kab noj hniav hauv qab kub (uas yog, qhov nruab nrab kub) thiab tau txais qhov ntsuas kub ntawm qhov nruab nrab.

Qhov zoo ntawm kev ntsuas kub tsis sib cuag:

Qhov kev txwv siab ntawm kev ntsuas tsis txwv los ntawm qhov ntsuas kub ntawm qhov ntsuas qhov ntsuas kub, yog li tsis muaj kev txwv rau qhov ntsuas kub siab tshaj plaws hauv txoj cai.Rau qhov kub siab tshaj 1800 ℃, qhov ntsuas kub tsis sib cuag yog feem ntau yog siv.Nrog rau kev tsim cov thev naus laus zis thev naus laus zis, kev ntsuas hluav taws xob ntsuas hluav taws xob tau maj mam nthuav tawm ntawm lub teeb pom kev mus rau lub teeb infrared, thiab nws tau siv qis dua 700 ℃ rau chav tsev kub nrog kev daws teeb meem siab.