Kev mob ntawm tus txheem platinum rhodium thermocouple
Hauv cov xyoo ntawm kev kub siab ua muaj nuj nqi hlau thermocouple pov thawj kev ua haujlwm, ntau ntau cov ntaub ntawv, los ntawm cov uas pom qee cov qauv tshiab thermocouple, tshwj xeeb tshaj yog cov txheej txheem platinum rhodium 30 - platinum rhodium 6 thermocouple, hauv lub voj voog kuaj tsuas yog ob peb zaug, Tus nqi ntawm ultra-tsis zoo, thiab nws cov khoom siv thermoelectric hloov pauv ntau. Daim Duab 1 thiab 2 nthuav tawm qee cov ntaub ntawv sawv cev. Txheem platinum-rhodium 10-platinum thermocouple vim tias muaj ib lub electrode yog cov dawb platinum, thermoelectric kev ua tau zoo kuj ruaj khov, tab sis nws cov kab ke tshiab lossis hauv kev siv tseem hloov. Qhov laj thawj, muaj ntau yam hauv qab no.
1 kev sib kis ntawm cov qauv thermocouple
(1) cov txheej txheem tshiab ntawm cov qauv thermocouple, cov hlau txias hauv cov khaub thuas (txias, txias), vim yob thiab
xaim kos duab tuag hnav thiab tsim kua muag, uas ua rau muaj ntau cov hmoov hlau cov roj seem hauv cov xaim txawm
nto, muaj kuab paug kub electrode. Txuas ntxiv, thaum lub sijhawm hais los saum toj no hais, lub
lubricating roj thiab cov coolant siv nyob rau hauv cov txheej txheem saum toj no tau decomposed los tsim
pa roj carbon, sulfur, hlau thiab lwm yam vim qhov kub nce los ntawm tus ua haujlwm txias, yog li
ntxiv kev ua qias tuaj cov kub electrodes. Tus ntawd yog tus qauv thermocouple thiab ib puag ncig
ib puag ncig ntawm cov khoom siv los yog qhov tsis zoo nyob hauv kev hloov pauv tshuaj uas yuav hloov qhov
muaj pes tsawg leeg ntawm cov thermocouple alloy, tus qauv thermocouple thermoelectric kev ruaj ntseg.
(2) kom tiv thaiv qhov kub ntawm cov qauv thermocouple, vim lub siab tso zis
(uranium, carbon) los ntawm lub rwb thaiv tsev txoj kab sib txawv thiab txawm tias tiv tauj nrog lo lo ntxhuav, ntu tiv tauj
ntawm qhov teeb meem loj tau faib tawm ntawm cov kev mob cev nqaij daim tawv.
(3) cov thermocouples hlau uas muaj nqi tau sim, vim hais tias siv cov chaw sib txawv, qhov kub
electrode nto yuav raug paug los ntawm ntau yam tsis huv, yog tias tu tsis txaus, thaum
siv cov txheej txheem ntsuas qhov ntsuas kub siab, nws yuav txawv qhov tsis muaj kuab paug ntawm kev ua qias tuaj. Cawv ntawm
thermocouple ruaj khov ntawm cov qauv thermocouple nrog qib siab.
Kev tshem tawm ntawm kev ua kom tsis muaj zog ntawm cov qauv thermocouple kev ua qias tuaj vim los ntawm qhov cuam tshuam ntawm
kev qhia kom tu.
Txawm hais tias lub kaw lus tshiab lossis kev siv cov ntawv pov thawj muaj hlau muaj txiaj ntsig, ua ntej sim, yuav tsum
yuav nruj me ntsis kom huv. Cov txheej txheem kev tu yog raws li nram no:
(A) cov kua qaub sov (sov sov): pickling thermocouple yog kev siv nitric acid (sulfuric acid)
oxidation muaj peev xwm, tshem tawm cov txheej txheem tshiab, kev siv ntawm sab saum npoo ntawm cov kub electrode organic thiab
hlau tsis huv.
(B) borax tu cov thermocouple: kev siv cov thermocouple nrog tu borax, yog tshem lub
tshuav nyob rau hauv qhov kub electrode nto yog nyuaj rau yaj hauv acid hlau impurities thiab
oxide. Ua kom tiav cov kub electrode nto kev cuam tshuam ntawm impurities, ob leeg kom tshem tawm
qhov cuam tshuam txog cov thermoelectric cov yam ntxwv ntawm cov thermocouple seized, tab sis kuj tiv thaiv tus
kuaj sim qib siab ntawm cov qauv txheem thermocouple paug thiab xeb.
Tsis tas li ntawd, kev tiv thaiv ntawm cov qauv txheem thermocouple ob lub qhov dej rwb thaiv tsev yeeb nkab ntawm lub cev
thiab tshuaj lom neeg ruaj khov yog qhov zoo dua, nyob rau hauv chav kawm ntawm lub thermocouple tsis tsim cov pa phem
; cua nruj (piv txwv li, porosity me me) yog qhov zoo dua rau kev tiv thaiv kev tiv thaiv sab nraud nkag rau hauv
cov raj tiv thaiv kom qhov kub electrode puas thiab cuam tshuam. Ob-lub qhov rwb thaiv tsev yeeb nkab rau hauv
siv ua ntej kev siv" aqua regia" tu, siab kub thiab ci thiab cim tau zoo thiab
tsis zoo polarities ntawm perforation. Yog tias lub rwb thaiv tsev raj tu tsis tiav, rau qhov
txheem platinum thiab rhodium 10 - platinum thermocouple, yooj yim kom paug cov platinum ncej,
yog li hais tias platinum purity txo qis, tus nqi ntawm thermal EMF txo. Xws li: txheem platinum
thiab rhodium 10 - platinum thermocouple coj los ua cov yeeb nkab uas tsis huv rau ob chav, tom qab ntsuas tiav
tom qab annealing, ntawm 1 084.62 ℃ qhov kub taw tes ntawm thermal electromotive force txo qis rau
sib txawv (2.9 ~ 5.9μV). Saib Daim Ntawv 1 rau cov ntaub ntawv.
Cov cawv ntawm kev cais ntawm cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov kub electrode rau ntawm
thermoelectric ruaj ntseg ntawm tus qauv platinum - rhodium thermocouple
Raws li cov cai, txoj kab ke tshiab ntawm cov qauv platinum thiab rhodium thermocouple, qhov ua kom sov
kev nyab xeeb ntawm kev txheeb xyuas, tab sis lub sij hawm luv luv kev ruaj ntseg, tsis tshem tawm tag nrho cov thermocouple
kev nyuaj siab sab hauv. Yog li no, hauv lub voj voog xeem, txawm hais tias feem ntau tsis siv, tshuaj xyuas, muaj
qee tus qauv platinum thiab rhodium thermocouple, tseem yuav muaj qhov ua siab ntev. Hauv
tshwj xeeb, tus qauv platinum-rhodium 30-platinum-rhodium 6 thermocouple, vim tias ob
platinum electrode yog platinum thiab rhodium alloy binary hais, thiab hauv 600 ℃ ~ 800 ℃, 1 150
℃ ~ 1350 ℃ rhodium sublimation, evaporation Rhodium yuav ua rau lub taub ntawm
thermoelectrode me dua, tsis tsuas yog sib xyaw ua ke ntawm nruab nrab cov hluav taws xob kub, tab sis kuj yog
cov ntsiab lus ntawm rhodium nyob rau hauv txoj kev daws teeb meem sib cais, uas ua rau tib lub zog thermoelectric
cov kev hloov pauv, yog li hloov nws lub zog thermoelectric, cuam tshuam rau lub thermocouple ruaj khov
Kev sib deev, thiab tseem muaj kev thev taus. Kuj pom tias qee qhov super-voj voog feem ntau tsis yog siv txheem
thermocouple, thermoelectromotive quab yuam kuj hloov pauv, ua rau muaj qhov yuam kev, uas yog kev laus
yuam kev. Cov no cuam tshuam nrog cov khoom siv nrog cov ntab ntaws tsis ntev lub sij hawm ruaj khov ntawm kev txheeb xyuas
.
Cov nram qab no yog cov txheej txheem ntawm platinum rhodium 10 platinum thermocouple uniformity
(ntsuas qhov kub thiab txias 1 084 62 ℃) kev ntsuas ntawm ib pawg ntawm cov ntaub ntawv (Cov Lus 2). Ob khub ntawm kub electrodes
txhua 8.04m, feem, txiav rau hauv ib khub ntawm 2.01m, raws li qhov ua tiav ntawm cov qauv,
ua los ntawm cov txheej txheem axial annealing 8 thermocouple, thiab tom qab ntawd tom qab radial annealing tom qab
xeem ntawv. Lub yim lub ntsej muag thermocouples tau pom tias yog inhomogeneous nrog muaj peev xwm ntawm 4 μV,
uas sib npaug rau 0.34 ° C. Qhov no yog vim qhov kev cais ntawm qhov tshuaj lom neeg ntawm
lub thermocouple.
Qhov Cuam Tshuam ntawm Kev Nyuaj Sab Hauv ntawm Thermoelectric Ruaj Ntseg ntawm Txheem Pt - Rh Thermocouple
Cov kev sib tw sab hauv thiaj li kos lossis siv cov txheej txheem txheej txheem thermocouple, kub electrode los ntawm sab nraud quab yuam, sab hauv tsim tawm. Nws yog qhov tseem ceeb uas cuam tshuam cov thermoelectric ruaj khov ntawm cov qauv platinum-rhodium thermocouples. Hauv cov txheej txheem ua qauv thermocouple hlau txias kev tsim khoom thiab paub tseeb ntawm kev ua haujlwm, tau txuas rau qib sib txawv ntawm kev ntxhov siab sab hauv, uas ua rau cov khoom thermoelectric tsis zoo, thermoelectric ruaj khov rau qhov yuam kev. Vim tias tus qauv dual-hlau khoov los yog ncab vim los ntawm tus mob khaub thuas, yog li muaj kev kub ntxhov sab hauv thiab cov ntxaij hlau tsis sib xws. Raws li cov ntawv nyeem txawv teb chaws, platinum tshiab thiab rhodium thermocouple nyob rau thaj tsam ntawm 200 ℃ ~ 1 000 ℃ yuam kev ntawm txog 8 ℃, thiab nyob rau tib qho xwm txheej, tom qab axial, radial annealing yuam kev ntawm li 1 ℃, koj tuaj yeem pom Tom qab quenching thiab tempering kho, platinum-rhodium thermocouple yuam kev poob qis, thermoelectric cov khoom zoo dua.
Ob txoj kev tshem tawm kev ntxhov siab sab hauv:
(1) nyob rau hauv cov huab cua dai xaim annealing, kom lub kub electrode axial kub tusyees txuas rau
saum npoo ntawm kub electrode tsawg melting point hlau impurities yuav tag nrho volatile. Tshem tawm
kev ntxhov siab axial hauv kev siv.
(2) rau cov hluav taws xob tsis muaj hluav taws xob, kom cov cua sov ntawm cov hluav taws xob cua sov tsis zoo. Tshem tawm vim
axial annealing, qhov hluav taws xob thermal electrode radial kub los ntawm kev cuam tshuam ntawm huab cua ambient tsis yog
zoo ib yam, ua kom txias nrawm, yooj yim kom tau cov chaw ua haujlwm niaj hnub, tseem muaj qhov tsawg me me ntawm cov seem
radial kev nyuaj siab thiab kev ntxhov siab vim hnav thaum lub tshuab raj rwb thaiv tsev.
Tsuas yog tom qab ua kom muaj qhov tsim nyog thiab txaus annealing los txhim kho cov thermal electrode ntawm
microstructure kom tshem tawm cov kev kub ntxhov nyob rau hauv cov electrode los txhim kho tus qauv platinum
thiab rhodium thermocouple thermoelectric stability nyob rau hauv kev txiav txim siab los ua tus qauv platinum thiab
rhodium thermocouple kom tau raws li cov kev xav tau ntawm cov txheej txheem pov thawj kom paub tseeb
tias Standard Platinum thiab rhodium thermocouple hauv cov txheej txheem dhau los ntawm thoob ntiaj teb
ntsuas qhov ntsuas kub, raws li kev hloov chaw ntawm qhov ntsuas kub ntawm tus qauv ntsuas.
Ntxiv: No. 16, Txoj Kev 3, Sanjiang Kev Lag Luam Thaj Tsam, Shengzhou, Zhejiang, Suav
Sib cuag: Eric Xie
Email:sale@benoelectric.com
Mob: +861598895936
Skype:ericxie123@outlook.com
Wechat& Whatsapp: +8615988295936
Lub Vev Xaib: www.benoindustry.com
