Tus Kws Ua Haujlwm Kev Nyab Xeeb Phau Ntawv Qhia rau Qhov Tseem Ceeb Thermocouple Loops

Xav txog qhov xwm txheej uas cov khoom siv cua sov ua kom sov sai sai, ua rau muaj kev kaw thaum muaj xwm txheej ceev thiab raug nqi ntau lawm. Ntau zaus tshaj li qhov tsis, lub hauv paus ua rau cov kab rov qab mus rau cov teeb meem nrog cov thermocouple loops- cov khoom uas ya hauv qab lub radar kom txog thaum muaj ib yam dab tsi mus tsis ncaj ncees lawm. Rau kev nyab xeeb engineers, xyuas kom cov loops muaj kev ntseeg siab tsis yog ib qho kev ua haujlwm nkaus xwb; nws yog lub hauv paus ntawm kev tswj kev ua haujlwm kev nyab xeeb thiab kev ua haujlwm thoob plaws 电热 systems.

Thermocouples ua haujlwm ntawm lub hauv paus ntsiab lus yooj yim tab sis meej: thaum ob txoj hlua hlau sib txawv tau koom nrog ntawm ib qho kawg (kev ntsuas qhov sib txuas), qhov hluav taws xob raug tsim tawm uas cuam tshuam ncaj qha nrog kev hloov pauv kub. Cov teeb liab hluav taws xob no tau xa mus los ntawm lub voj voog thermocouple mus rau tus tswj hwm, uas kho cov cua sov tso tawm kom haum. Tsis zoo li lwm yam kub sensors xws li RTDs (Resistance Temperature Detectors), thermocouples excel nyob rau hauv huab cua kub ntau yam -los ntawm -200℃mus rau 1750℃nyob ntawm cov hlau ua ke-thiab muab lub sij hawm teb ceev ceev, ua rau lawv indispensable nyob rau hauv high-temperature 电热 daim ntaub ntawv xws li kev kho cua sov, cov khoom siv cua sov.

Cov thermocouple sib txawv yog haum rau cov kev siv tshwj xeeb, thiab xaiv qhov tsis ncaj ncees lawm yog ib qho pitfall. Hom K, ua los ntawm chromel thiab alumel, yog qhov siv dav tshaj plaws vim nws cov kav ntev thiab tus nqi -effectiveness, haum rau kev lag luam cua sov. Hom J (hlau thiab constantan) ua tau zoo nyob rau hauv oxidizing ib puag ncig tab sis muaj qhov qis tshaj qhov kub thiab txias, ua rau nws zoo tagnrho rau nruab nrab - cov ntawv siv kub xws li cov khoom siv dej kub. Hom S (platinum-rhodium alloys), ntawm qhov tod tes, tiv taus ultra- kub kub thiab tau tshwj tseg rau cov ntawv thov tseem ceeb xws li aerospace lossis chav ntsuas cua sov. Raws li kev paub dhau los, cov hom thermocouple tsis sib haum thiab cov tswj tau suav txog 30% ntawm kev tswj qhov kub thiab txias tsis ua haujlwm hauv 电热 systems- yuam kev yooj yim zam nrog kev sib xyaw kom raug.

Kev saib xyuas ntawm thermocouple loops yog ib qho tseem ceeb raws li kev xaiv kom raug. Corrosion thiab hnav ntawm qhov ntsuas kev sib tshuam yog qhov ua txhaum loj tom qab nyeem tsis raug. Nyob rau hauv cov av ntub lossis tshuaj lom neeg- ib puag ncig nplua nuj, cov ntaub thaiv npog ua los ntawm cov hlau tsis muaj steel lossis ceramic tuaj yeem ua rau lub thermocouple lub neej ntev heev. Lwm lub ntsiab lus tseem ceeb yog xyuas kom muaj kev sib txuas zoo: kev sib txuas xoob lossis cov kab hluav taws xob puas tuaj yeem cuam tshuam cov teeb liab hluav taws xob, ua rau qhov ntsuas kub tsis raug. Kev siv cov cables shielded los txo cov kev cuam tshuam ntawm electromagnetic kuj yog ib qho kev coj ua zoo tshaj plaws, tshwj xeeb tshaj yog nyob rau hauv cov chaw lag luam nrog ntau yam khoom siv hluav taws xob.

Kev zam dhau - kev cia siab ntawm ib lub voj voog thermocouple yog qhov tseem ceeb rau kev nyab xeeb. Rov ua dua cov voj voog - txhim kho ob lossis ntau dua cov thermocouples hauv cov haujlwm tseem ceeb- muab kev thaub qab thaum ib qho ua tsis tiav, tiv thaiv kev puas tsuaj loj heev. Nws tseem yog ib qho tseem ceeb uas yuav tau xav txog ib puag ncig thaum txhim kho cov thermocouples; muab lawv ze ze rau cov cua sov los yog nyob rau hauv cov cheeb tsam uas tsis zoo airflow yuav ua rau skewed nyeem. Raws li cov ntaub ntawv hauv kev lag luam, cov thermocouples muab tso rau hauv kom zoo txo ​​qhov ntsuas kub tsis raug txog li 40%, txo qhov kev pheej hmoo ntawm kev nyab xeeb thiab hluav taws xob pov tseg.

Lub hauv paus ntawm kev txhim khu kev qha thermocouple voj kev ua tau zoo yog nyob rau hauv kev xaiv kom raug, kev saib xyuas tsis tu ncua, thiab kev teeb tsa zoo. Cov kauj ruam no tsis tsuas yog xyuas kom meej qhov kub thiab txias tab sis kuj txhawb kev ruaj ntseg ntawm tag nrho cov tshuab. Rau kev teeb tsa cua sov nyuaj-txawm yog cov chaw tsim khoom, chaw lag luam loj, lossis kev cai 电热 cov kev daws teeb meem-thermocouple voj voog tsim yuav tsum tau npaj kom haum raws li qhov kub thiab txias, ib puag ncig, thiab cov qauv kev nyab xeeb. Cov txheej txheem kev tsim qauv coj mus rau hauv tus account tag nrho cov yam no, optimizing thermocouple voj kev ua tau zoo thaum sib txuas seamlessly nrog tag nrho cov cua sov system kom xa zoo ib yam, muaj kev nyab xeeb.