Lonnmeter Group, ib lub chaw tsim khoom thiab cov chaw muag khoom ntawm inline density meters, tau mob siab rau ntau xyoo los muab kev daws teeb meem rau cov neeg siv khoom thoob ntiaj teb. Cov kev daws teeb meem no tau pab ntau lub tsev lag luam, cov chaw tsim hluav taws xob, thiab cov tuam txhab metallurgical txo nqi thiab txhim kho kev ua haujlwm zoo.

Lub luag haujlwm tseem ceeb ntawm Slurry Mixing

Kev ua tau zoo ntawm hydrogen roj cell MEAs yog nyob ntawm qhov sib xws thiab kev ruaj ntseg ntawm catalyst slurries. Piv txwv li, anode slurries yuav tsum 15% Pt-C catalyst uniformly dispersed nyob rau hauv ib tug tov hnyav ntawm 40% deionized dej, 40% methanol, thiab 5% ionomer tov; cathode slurries xav tau ntau dua proportions ntawm catalyst (20%) thiab binder (10%). Qhov piv txwv no tsis tsuas yog cuam tshuam rau slurry lub cev lub cev tab sis tseem cuam tshuam ncaj qha rau kev faib cov catalytic active sites thiab proton conductivity.

Kev tswj qhov ceev tsis raug yuav ua rau catalyst agglomeration lossis sedimentation, ua rau tsis sib xws ntawm cov coated catalyst thiab txawm tias tag nrho cov roj teeb ua haujlwm. Piv txwv li, qhov ceev dua yuav qhia tau tias muaj ntau dhau catalyst lossis hnyav evaporation, nce slurry viscosity thiab ua rau "txiv kab ntxwv tev" lossis "pinhole" tsis xws luag thaum txheej txheej; qhov qis dua tuaj yeem qhia tias tsis txaus catalyst, tsis muab cov chaw tshuaj tiv thaiv txaus thiab txo cov roj teeb ua haujlwm.

Kev txwv ntawm Traditional Slurry Density Control

Ib txwm catalyst slurry mixing yog nyob ntawm phau ntawv hnyav thiab kev sim offline hauv thawj. Txoj hauv kev no qeeb qeeb ntawm cov txheej txheem ntawm lub sijhawm tiag tiag - tau txais cov txiaj ntsig kev sim los ntawm kev ua piv txwv feem ntau yuav siv sijhawm 15-30 feeb, los ntawm lub sijhawm ntawd cov slurry tuaj yeem nkag mus rau cov txheej txheem tom ntej, ua rau cov khoom siv rov ua dua tshiab.

Kev tuav haujlwm ua haujlwm tawm tsam kom pom nanoscale catalyst particle agglomeration. Ib qho ntxiv, cov ntsiab lus xws li cov kev hloov pauv hloov thiab cov txheej txheem evaporation nyob rau hauv slurries, cov txheej txheem qub tsis tuaj yeem them rau hauv lub sijhawm tiag tiag, ntxiv exacerbating zoo txaus ntshai.

Txoj Cai Ua Haujlwm thiab Kev Ua Haujlwm Zoo

Txhawm rau daws cov teeb meem no, Lonnmeter engineers tsim inline ntom ntsuas ntsuas raws li lub hauv paus ntsiab lus ntawm Coriolis quab yuam, uas ntsuas cov dej vibration zaus kom tau txais cov ntaub ntawv ceev ceev nrog qhov tseeb txog ± 0.001 g / cm³. Nyob rau hauv slurry sib xyaw ntawm hydrogen roj cell, cov high-precision soj ntsuam cov cuab yeej tuaj yeem ntsia tau rau ntawm qhov hluav taws xob sib xyaw tso tsheb hlau luam lossis cov kav dej xa mus kom tsis tu ncua khaws cov ntaub ntawv ceev thiab kub, nrog kev them nyiaj algorithms tshem tawm qhov cuam tshuam ntawm qhov kub ntawm qhov ntom.

Tshaj li Coriolis density meters, Lonnmeter kuj tau tsim lwm yam inline density meters xws li tuning diav rawg density meters thiab ultrasonic density meters los muab cov ntse ceev ceev soj ntsuam sensors rau kev ua hauj lwm sib txawv. Thaum kuaj pom tias cov cathode slurry ceev tshaj lub hom phiaj tus nqi, lub kaw lus cia li xam qhov sib txawv thiab ntxiv qhov tsim nyog cov kuab tshuaj los ntawm lub twj tso kua mis metering; yog tias qhov ntom ntom qis dhau lawm, pre-dispersed catalyst niam cawv ntxiv. Qhov kev tswj lub voj voog dynamic no tsis tsuas yog kho cov qauv sib txawv xwb tab sis kuj kwv yees cov teeb meem muaj peev xwm los ntawm kev txheeb xyuas cov ntaub ntawv keeb kwm. Thaum ceev cov kev hloov pauv ntau dua li thresholds, lub kaw lus triggers tswb kom tsis muaj kev sib cais tsis muaj kev sib cais, zam kev sib cais ua kom zoo ntxiv.