1. Kev Ua Tau ntawm Ultrasonic Flowmeters rau Acidic / Alkaline Solutions
Yog lawm, cov ntsuas dej ultrasonic tuaj yeem ntsuas cov kua qaub thiab alkaline tau zoo, tab sis lawv qhov kev haum nyob ntawm qhov kev xaiv cov khoom siv transducer thiab hom kev teeb tsa - ob yam uas hais txog qhov xwm txheej corrosive ntawm cov kua no. Tsis zoo li cov ntsuas intrusive (piv txwv li, cov ntsuas electromagnetic nrog cov electrodes sab hauv) uas muaj kev pheej hmoo corrosion los ntawm kev sib cuag ncaj qha nrog cov kua qaub / bases muaj zog, cov ntsuas dej ultrasonic (tshwj xeeb tshaj yog clamp-on qauv) txo qis kev sib cuag kua los ntawm kev teeb tsa cov transducers ntawm sab nraud ntawm cov kav dej. Rau cov ntsuas dej ultrasonic hauv kab (qhov twg cov transducers sib cuag nrog cov kua), siv cov ntaub ntawv tiv taus corrosion xws li PTFE (polytetrafluoroethylene), ceramic, lossis Hastelloy ua kom muaj kev sib raug zoo nrog cov kua dej hnyav xws li sulfuric acid, hydrochloric acid, lossis sodium hydroxide. Tsuav yog cov khoom siv transducer phim cov kua corrosivity thiab cov khoom siv yeeb nkab (piv txwv li, PVC, PVDF rau cov kua acidic) yog sib xws, cov ntsuas dej ultrasonic tswj kev ua haujlwm ruaj khov yam tsis muaj kev puas tsuaj.
2. Cov Txiaj Ntsig Tseem Ceeb Dua Li Cov Ntsuas Ib Txwm Muaj Rau Cov Kua Uas Muaj Corrosive
Cov ntsuas dej ntws ultrasonic muab cov txiaj ntsig tshwj xeeb thaum ntsuas cov kua qaub / alkaline, hais txog cov ntsiab lus mob ntawm cov thev naus laus zis ntsuas ib txwm muaj:
- Tsis Muaj Kev Hnav Uas Ua Rau Muaj Kev Xeb: Tsis zoo li cov khoom siv mechanical flowmeters (piv txwv li, turbine meters) nrog cov khoom txav uas xeb thiab jam, lossis electromagnetic meters nrog cov hlau electrodes uas yooj yim rau acid / alkali tawm tsam, ultrasonic flowmeters (clamp-on) tsis muaj cov khoom sib cuag ncaj qha nrog cov tshuaj. Cov qauv hauv kab siv cov khoom siv tsis-reactive, tshem tawm kev poob qhov tseeb ntsig txog corrosion lossis cov khoom siv tsis ua haujlwm.
- Tsis cuam tshuam los ntawm Kev Ua Kua Dej: Cov kua qaub thiab alkaline sib txawv ntau hauv kev ua kua dej (piv txwv li, dilute acetic acid muaj kev ua kua dej tsawg, thaum concentrated sodium hydroxide muaj kev ua kua dej siab). Cov ntsuas hluav taws xob electromagnetic vam khom kev ua kua dej kom ua haujlwm thiab tej zaum yuav ua tsis tiav nrog cov kua qaub qis, tab sis cov ntsuas ultrasonic ntsuas kev ntws los ntawm kev nthuav dav ntawm lub suab nthwv dej - kev ua kua dej, viscosity, lossis cov tshuaj lom neeg ntawm cov kua dej tsis cuam tshuam rau lawv cov kev nyeem.
- Kev Txij Nkawm Tsawg Kawg Nkaus: Cov kua dej uas muaj xeb feem ntau ua rau muaj kev txij nkawm ntau zaus rau cov ntsuas ib txwm muaj (piv txwv li, hloov cov electrodes uas xeb lossis cov khoom siv kho tshuab). Cov ntsuas dej ultrasonic, uas tsis muaj cov khoom txav mus los lossis cov khoom uas xeb tau, tsuas yog xav tau kev kuaj xyuas qee zaus ntawm kev sib phim ntawm cov transducer lossis cov yeeb nkab phab ntsa, txo cov sijhawm tsis ua haujlwm thiab cov nqi txij nkawm.
3. Cov Kev Xav Tseem Ceeb rau Kev Ntsuas Txhim Khu Kev Ntseeg Tau
Yuav kom paub tseeb tias qhov ntsuas tau raug thiab ntev ntawm cov kua qaub / alkaline, peb yam tseem ceeb yuav tsum tau muab tso ua ntej:
- Kev Sib Xws ntawm Cov Khoom Siv Transducer: Xaiv cov khoom siv raws li lub zog thiab hom ntawm cov kua. Piv txwv li, PTFE ua haujlwm rau feem ntau cov kua qaub muaj zog (tshwj tsis yog cov kua qaub hydrofluoric kub), thaum cov transducers ceramic tswj cov kua alkaline kub siab (piv txwv li, 80 ° C sodium hydroxide). Tsis txhob siv cov transducers hlau (piv txwv li, hlau tsis xeb) rau cov kua dej muaj zog corrosive, vim tias lawv yuav lwj mus raws sijhawm.
- Cov Yeeb Nkab Zoo Li Cas thiab Cov Khoom Siv: Cov yeeb nkab nws tus kheej yuav tsum tiv taus xeb—cov kev xaiv feem ntau suav nrog PVDF (rau cov kua qaub muaj zog), PVC (rau cov kua qaub/bases me me), lossis cov hlau uas muaj iav (rau cov kua qaub kub siab). Phab ntsa yeeb nkab uas puas lawm lossis xeb tuaj yeem ua rau cov teeb liab ultrasonic tsis meej, ua rau muaj qhov yuam kev ntsuas; xyuas kom meej tias cov yeeb nkab zoo thiab muaj qhov chaw du sab hauv.
- Kev Txwv Kub thiab Siab: Cov kua qaub / cov hauv paus muaj zog tuaj yeem ua haujlwm ntawm qhov kub siab (piv txwv li, cov kua qaub sulfuric acid qib kev lag luam ntawm 60–80 ° C) lossis siab. Paub meej tias qhov ntau thiab tsawg ntawm ultrasonic flowmeter ua haujlwm phim qhov kub thiab siab ntawm cov tshuaj - dhau qhov txwv no tuaj yeem ua rau cov transducers puas tsuaj lossis txo qhov tseeb ntawm lub teeb liab. Rau cov ntawv thov kub siab, xaiv cov transducers tiv taus kub siab (piv txwv li, cov qauv ceramic ntsuas rau txog li 150 ° C).
Kev Txheeb Xyuas
Cov ntsuas dej ntws ultrasonic yog qhov kev xaiv zoo thiab txhim khu kev qha rau kev ntsuas cov kua qaub thiab alkaline, muab tias cov khoom siv transducer sib xws nrog cov kua dej corrosion, thiab cov xwm txheej ntawm cov kav dej ua tau raws li cov kev cai yooj yim. Lawv txoj kev tsim tsis cuam tshuam (rau cov qauv clamp-on) lossis cov khoom hauv kab uas tiv taus corrosion, ua ke nrog kev tiv thaiv rau cov kua dej conductivity, ua rau lawv zoo dua li cov ntsuas ib txwm muaj hauv cov chaw corrosive. Los ntawm kev hais txog cov khoom sib xws, cov yeeb nkab mob, thiab cov kev txwv kev ua haujlwm, cov ntsuas dej ntws ultrasonic xa cov kev ntsuas ntws raug, tsis tas yuav saib xyuas rau kev siv hauv kev lag luam, tshuaj lom neeg, lossis cov dej khib nyiab uas muaj cov kua qaub / alkaline.
Lub sijhawm tshaj tawm: Lub Yim Hli-29-2025