Hom K Thermocouple Txoj Cai Ua Haujlwm: Thermoelectric Effect thiab Alloy Material Mechanism Analysis
Cov neeg siv khoom lag luam feem ntau tsuas yog tsom mus rau qhov ntsuas kub kawg ntawm kev nyeem cov ntaub ntawv ntawm cov thermocouple sensors, tsis quav ntsej txog kev hloov pauv hauv thermoelectric thiab cov ntaub ntawv kev ua haujlwm. Nyob rau hauv qhov tseeb txhaum cai thiab precision calibration ua hauj lwm, feem ntau kub drift thiab teeb liab teeb meem instability yog ze ze rau lub hauv paus ntsiab lus ntawm kev ua hauj lwm thiab cov khoom yam ntxwv ntawm thermocouples. Hom K thermocouple, raws li lub hauv paus hlau thermocouple siv dav tshaj plaws, muaj qhov ruaj khov thiab txhim khu kev qha thermoelectric conversion logic, thiab nws cov cim nickel -chromium thiab npib tsib xee- silicon alloy pairing lays lub hauv paus rau dav - kub- ntau yam ntsuas kub muaj peev xwm.
Tag nrho cov txheej txheem ntsuas kub ntawm Hom K thermocouple tso siab rau qhov ntsuas kub ntawm cov hlau sib txawv. Ob qhov sib txawv alloy conductors tsim ib lub voj kaw tiav, thiab kev hloov pauv hluav taws xob dawb tshwm sim ntawm qhov sib txuas ntawm qhov kub sib txawv. Thermal electromotive force stably generates nyob rau hauv lub voj, thiab tus nqi voltage tswj ib tug linear correlation nrog kub sib txawv nyob rau hauv lub zoo kub ntau yam. Cov cuab yeej ntsuas kub tau tshaj lij hloov pauv cov cim hluav taws xob sau rau hauv qhov ntsuas kub tsis txaus ntseeg, ua kom paub tseeb- lub sijhawm ntsuas kub. Yog tias tsis muaj qhov sib txawv ntawm qhov sib txawv ntawm ob qhov sib txuas, tsis muaj cov teeb liab hluav taws xob tsim tawm, uas piav qhia vim li cas qhov kub ntawm qhov kub thiab txias yog qhov tseem ceeb rau kev ntsuas thermocouple.
Cov yam ntxwv ntawm cov khoom zoo thiab tsis zoo electrodes ncaj qha txiav txim siab lub siab txwv ntawm thermocouple kev ua tau zoo. KP zoo electrode ua los ntawm npib tsib xee-chromium alloy tau zoo heev -kub oxidation tsis kam, uas muaj peev xwm tiv taus thermal oxidation corrosion nyob rau hauv siab - kub oxidation cua siab tshaj 1000℃rau lub sij hawm ntev. KN tsis zoo electrode ntawm npib tsib xee-silicon alloy muab cov thermoelectric linearity ruaj khov thiab qis- qhov kub thiab txias kev ua haujlwm them nyiaj, kom ntseeg tau tias cov teeb liab raug tso tawm los ntawm qhov kub qis ntawm -200℃mus rau nruab nrab thiab kub ntawm 1300 degree. Raws li cov ntaub ntawv xeem cov ntaub ntawv, ob lub alloys muaj qhov zoo thermal sib xws, thiab cov thermoelectric kev ua tau zoo yog tsawg dua 0.2% tom qab ntau txhiab lub voj voog thermal.
Kev ntsuas qhov ntsuas kub ua tiav ntawm Hom K thermocouple tuaj yeem muab faib ua peb qhov txuas: thermal teeb liab induction ntawm qhov sib txuas kub, hluav taws xob hluav taws xob xa hluav taws xob hauv lub voj kaw, thiab kub teeb liab hloov ntawm qhov chaw txias. Cov kev sib txuas kub kub ntsuas cov xov xwm los ntes cov thermal zog hloov pauv thiab hloov qhov kub ntawm qhov sib txawv mus rau hauv cov teeb liab hluav taws xob. Qhov chaw txias txias tswj qhov ntsuas kub tsis tu ncua kom tshem tawm qhov ntsuas qhov yuam kev tshwm sim los ntawm qhov ntsuas kub hloov pauv. Txhawb nqa transmitters optimize thiab amplify tsis muaj zog millivolt- theem teeb liab kom tsis txhob teeb liab poob thiab cuam tshuam thaum kis tau tus mob.
Cov lus hauv qab no qhia txog qhov sib txawv ntawm kev ua haujlwm thiab kev ua haujlwm ntawm Hom K thermocouple cov khoom zoo thiab tsis zoo electrode:
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Hom Electrode |
Alloy Composition |
Core Functional Advantage |
Cov yam ntxwv ua tau zoo |
|---|---|---|---|
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Electrode zoo (KP) |
90% Nickel + 10% Chromium |
Siab -kub oxidation kuj |
Kev ua haujlwm ruaj khov nyob rau hauv ntev - lub sij hawm siab - kub oxidation cua |
|
Electrode tsis zoo (KN) |
97% Nickel + 3% Silicon |
Thermoelectric linearity optimization |
Xyuas kom ruaj khov teeb liab tso zis nyob rau hauv tag nrho cov kub ntau yam |
Hauv kev ua lag luam kev lag luam, ntau qhov teeb meem txawv txav yog tshwm sim los ntawm kev nkag siab yuam kev ntawm kev ua haujlwm. Piv txwv li, tsis quav ntsej txog qhov kub ntawm qhov kub thiab txias yuav ua rau tag nrho qhov kub ntawm qhov sib txawv ntawm 2-5 degree; sib tov zoo thiab tsis zoo electrodes yuav ua rau rov qab teeb liab tso zis thiab distorted tag nrho cov ntaub ntawv. Tsis tas li ntawd, ntev -lub sijhawm ua haujlwm kub kub yuav ua rau me ntsis oxidation ntawm cov khoom siv hluav taws xob, ua rau qeeb cov teeb liab drift, uas yuav tsum tau ua haujlwm calibration tsis tu ncua kom ntsuas qhov tseeb.
Cov khoom sib txuam thiab thermoelectric hloov dua siab tshiab ntawm Hom K thermocouple txiav txim siab nws qhov txiaj ntsig tsis tuaj yeem hloov pauv hauv kev ntsuas kub ntsuas. Kev paub txog nws txoj hauv kev ua haujlwm sab hauv pab ua tus qauv ntawm - qhov chaw teeb tsa, xaim hluav taws xob thiab kev saib xyuas haujlwm. Kev tshaj lij sensor scheme deployment tuaj yeem tsim cov phiaj xwm siv thiab ntsuas cov phiaj xwm raws li cov khoom siv ua haujlwm kub thiab ib puag ncig cov yam ntxwv, kom ntseeg tau ntev - lub sijhawm ruaj khov thiab raug ua haujlwm ntawm Hom K thermocouple hauv cov tshuab ua haujlwm.
