Dab tsi yog qhov txawv ntawm Grounded thiab Ungrounded Armored Thermocouples rau Kub Khiav?

Armored thermocouples tuaj nyob rau hauv ob hom: grounded thiab ungrounded cores. Kev sib tw kub khiav yog ib qho tseem ceeb tsim kev txiav txim siab uas ntau tus pwm engineers tsis saib xyuas. Ob hom sib txawv ntawm qhov sib txawv ntawm lub taub hau vuam cov qauv, kev hloov hluav taws xob ua kom sov, tiv thaiv - cuam tshuam kev muaj peev xwm thiab cov xwm txheej ntawm daim ntawv thov, uas ncaj qha txiav txim siab qhov ruaj khov thaum siv rau ntau qhov ntom ntom -nozzle kub runners, siab- kub manifolds thiab electromagnetic - kev cob qhia hnyav. Lawv qhov zoo thiab cov kev txwv tau pom meej meej, tsis txhob muaj teeb meem chaos thiab kub drift vim tsis sib haum nrog cov qauv.

Grounded armored thermocouples fuse qhov zoo thiab tsis zoo alloy hlws ris mus rau sab hauv phab ntsa ntawm cov hlau sheath, muab ncaj qha hlau conduction ntawm sensing point thiab sab nraud raj. Cov cua kub los ntawm cov kub khiav nozzle los yog manifold yog kis los ntawm tag nrho cov sheath phab ntsa mus rau lub thermoelectric hlws ris, ua rau ultra- kub teb ceev ceev, feem ntau ruaj khov nyob rau hauv 1.5 vib nas this tom qab kub hloov. Lub hauv paus sensor yog qhov zoo tshaj plaws rau nyias- phab ntsa ntim cov neeg ua haujlwm kub uas xav tau ultra- cov ntaub ntawv kub ceev hauv lub sijhawm. Lub zog tuaj yeem hloov kho sai sai, zam kev ua kom khov khov thiab luv luv - phom sij thaum siab - voj voog molding. Lub caij no, cov qauv hlau sib xyaw ua kom muaj kev tiv thaiv rau cov neeg kho tshuab compression, thiab me me extrusion thaum lub sij hawm pwm los ua ke yuav tsis ua kev puas tsuaj rau lub taub hau ntes tau yooj yim kom nws tsim nyog rau cov xwm txheej loj heev nrog cov pwm disassembly. Txawm li cas los xij, qhov teeb meem tseem ceeb ntawm kev tsim hauv av yog tias nws muaj kev tiv thaiv tsis zoo - electromagnetic cuam tshuam muaj peev xwm. Cov hlau sheath tsim ib lub voj conductive uas khaws cov teeb liab sib nqus ntawm cov cua sov coils thiab servo motors. When a lot of thermocouples are densely packed on one manifold, the temperature values ​​bounce often. Grounded thermocouples tsis pom zoo rau cov khoom siv hluav taws xob sib txuas thiab ntau-txheej txheej pwm nrog cov kab txuas txuas ntxiv.

Rau ungrounded armored thermocouples, lub alloy junctions yog tag nrho ib puag ncig los ntawm compact magnesium oxide rwb thaiv tsev hmoov rau insulating lub sensing hlaws los ntawm sab nraud hlau sheath yam tsis muaj hlau kov. Cov txheej txheem rwb thaiv tsev no tiv thaiv cov suab nrov sab nraud ntawm lub tshuab hluav taws xob los ntawm kev nkag mus rau lub ntsuas hluav taws xob lub voj voog, yog li kev nyeem ntawv ntsuas kub zoo tshaj plaws tuaj yeem ua tiav, txawm tias nyob rau hauv kev cob qhia nrog inverters, siab - cov cuab yeej siv hluav taws xob cua sov thiab cov tshuab ua haujlwm tsis siv neeg. Rau cov khoom siv kho mob pob tshab kub khiav thiab lub zog tshiab lub tsheb hluav taws xob hluav taws xob cov pwm pwm nrog qhov kub thiab txias tsis sib haum, cov sensors tsis muaj qhov pom zoo yog qhov kev xaiv zoo tshaj plaws los tiv thaiv qhov kub hnyiab, qhov rooj hlau kos duab, thiab qhov tsis sib haum ntawm qhov ntev, uas yog tshwm sim los ntawm cov teeb liab cuam tshuam. Kev lag luam pom tseeb-tawm yog qhov qeeb qeeb ntawm cov cua sov, nrog cov txheej txheem rwb thaiv tsev ua ib qho kev cuam tshuam me ntsis, ua rau lub sij hawm teb rau 2.5-3 vib nas this. Lub lag luam tsis yog ib qho teeb meem rau nruab nrab thiab qeeb lub voj voog ntau lawm tab sis tuaj yeem tsim kom muaj qhov tsis sib xws me me hauv yaj rau ultra high speed nyias phab ntsa txhaj tshuaj molding kab. Tsis tas li ntawd, cov kev tsim kho tsis zoo muaj kev ua haujlwm tsis zoo ntawm kev ua haujlwm extrusion, thiab qhov kev cuam tshuam loj heev thaum lub sij hawm sojntsuam yuav ua rau cov hmoov insulating sab hauv, uas ua rau muaj peev xwm zais qhov luv luv.

Tsis tas li ntawd, ib qho thib peb ib nrab- kev hloov pauv hauv av rau cov xwm txheej sib xyaw ua haujlwm tau npaj tseg, uas siv ib feem ntawm kev sib txuas ntawm qhov sib txuas thiab cov phab ntsa sheath kom sib npaug cov lus teb ceev thiab tiv thaiv - cuam tshuam kev ua haujlwm. Nws yog feem ntau siv hauv cov khoom siv hauv tsev kub khiav nrog lub suab nrov me me, thiab yog rau ABS, PP, thiab PC molding yam tsis muaj qhov yuav tsum tau ua.

Kev sib txuam cov cai ntawm cov khoom kub khiav yog cov qauv raws li cov qauv tsim. Manifold flat-head thermocouples in single-layer low-density layout can choose grounded style to pursuit rapid response, but deep probe thermocouples on densely packed valve gate nozzles have to select ungrounded structure to prevent crosstalk between nearby sensors. Rau cov kub kub thiab corrosive engineering polymers xws li PPS thiab LCP, ungrounded Inconel sheath thermocouples yog qhov zoo dua, vim tias tag nrho cov txheej rwb thaiv tsev tuaj yeem tiv thaiv cov roj corrosive los ntawm kev tsim cov kab hluav taws xob hauv lub sheath txawm tias micro-pitting tshwm sim rau ntawm lub raj sab nraud.

Cov txheej txheem tu vaj tse yog txawv rau ob lub qauv. Grounded thermocouples nrog hnyav carbon deposits yuav tsum tau ntxuav nrog mos tooj liab txhuam txij li thaum dhau- polishing lub sheath nto yuav nyias cov hlau phab ntsa thiab ua mob rau lub vuam sib txuas. Thaum ungrounded sensors tso cai rau kev tshem tawm cov pa roj carbon ntau dua, cov neeg ua haujlwm yuav tsum tsis txhob siv lub zog rub tawm ntawm cov hlau kawg kom tiv thaiv kev sib cais ntawm cov hmoov insulating hauv lub raj.

Kev xaiv ntawm av los yog ungrounded thermocouples tsis tuaj yeem ua rau tus nqi ib leeg, tab sis ntawm kev ntsuas kev ntsuas ntawm ib puag ncig electromagnetic ntawm cov kab ntau lawm, qhov ceev ntawm lub voj voog molding thiab qhov ceev ntawm qhov kub khiav configuration los xyuas kom meej qhov sib npaug teb rau qhov kub thiab txias thiab teeb liab stability.