Yuav ua li cas kom muaj txiaj ntsig Thermocouple Kev Ua Haujlwm Tom Qab Kho Pwm?

Tom qab kev kho pwm-txawm tias nws cuam tshuam nrog vuam, machining, lossis hloov qhov kub khiav- qhov kev ua tau zoo ntawm cov thermocouple yuav tsum tau rov ua dua tshiab - kom ntseeg tau tias cov pwm yog npaj rau kev tsim khoom. Thawj kauj ruam yog kom pom qhov muag tshuaj xyuas lub thermocouple thiab nws cov installation. Xyuas kom paub tseeb tias qhov kev sojntsuam tsis puas, lub cable tsis pinched, thiab lub connector yog sib raug zoo. Yog hais tias lub thermocouple raug tshem tawm thaum lub sij hawm kho, xyuas kom meej tias nws yog reinstalled kom raug thiab torqued raws li cov specifications. Qhov thib ob kauj ruam yog ua ib qho kev ntsuas calibration. Tshav kub kub khiav mus rau qhov chaw ua haujlwm thiab tso cai rau nws kom ruaj khov. Siv lub pyrometer los ntsuas qhov ntsuas kub ntawm lub taub hau thiab muab piv rau tus tswj kev nyeem ntawv. Yog tias qhov sib txawv ntau dua ± 2 degree, lub thermocouple yuav raug puas lossis hloov pauv thaum kho. Qhov thib peb kauj ruam yog ua lub sij hawm teb. Siv cov kauj ruam hloov pauv (piv txwv li, nce qhov teeb tsa los ntawm 5 degree) thiab saib xyuas lub sijhawm kom ncav cuag 90% ntawm tus nqi tshiab. Yog hais tias lub sij hawm teb ntev dua ua ntej kho, nws yuav qhia tau tias tsis zoo thermal contact (tejzaum nws yog ib qho residue nyob rau hauv lub mounting qhov). Qhov thib plaub yog los xyuas qhov feem pua ​​ntawm lub tshuab cua sov. Yog tias lub zog feem pua ​​​​tau siab dua ua ntej kev kho, nws qhia tau hais tias qhov kev ua haujlwm thermal ntawm pwm tau hloov pauv (piv txwv li, vim muaj kev hloov pauv hauv cov kab txias lossis qhov sib ntxiv ntawm cov hlau tshiab). Qhov no tsis yog qhov teeb meem thermocouple, tab sis nws yuav tsum tau sau tseg. Kauj ruam tsib yog ua "thermal map." Siv lub thermal imager lossis ib txheej ntawm cov thermocouples ib ntus los qhia qhov ntsuas kub ntawm cov khoom siv. Muab piv rau daim ntawv qhia no rau lub hauv paus (ua ntej kho). Yog tias qhov ntsuas kub tau hloov pauv, nws yuav qhia tau tias muaj kev hloov pauv hauv lub thermocouple txoj haujlwm lossis kev hloov pauv ntawm cov khoom thermal ntawm pwm. Cov kauj ruam thib rau yog khiav ib qho kev sim luv luv (piv txwv li, 100 cycles). Saib xyuas cov thermocouple nyeem ntawv thaum lub sijhawm sim. Lawv yuav tsum ua kom ruaj khov thiab zoo ib yam. Yog tias kev nyeem ntawv tsis raug, lub thermocouple yuav raug puas tsuaj. Kauj ruam xya yog los xyuas qhov zoo. Ntsuas qhov hnyav thiab qhov ntev. Yog tias lawv nyob hauv qhov tshwj xeeb, cov thermocouple yuav ua tau zoo. Kauj ruam yim yog los sau cov ntaub ntawv validation. Sau cov pyrometer nyeem ntawv, lub sij hawm teb, lub zog feem pua, thiab cov ntaub ntawv zoo ib feem. Qhov no ua rau lub hauv paus tshiab rau cov pwm kho. Los ntawm kev ua tiav kev siv tau zoo tom qab kev kho pwm, cov kws tsim khoom tuaj yeem ntseeg siab rov qab cov pwm rau kev tsim khoom, paub tias cov thermocouple muab cov ntaub ntawv raug thiab cov pwm ua tau zoo raws li qhov xav tau, tiv thaiv cov teeb meem tsis zoo lossis kev poob qis.