Qhov tseeb thiab qauv kev teeb tsa ntawm lub tshuab electromagnetic flowmeter tuaj yeem tsis tsuas yog ua kom muaj kev ruaj ntseg ua haujlwm thiab qhov tseeb ntawm cov flowmeter, tab sis kuj pab txhawb kev tu txhua hnub nyob rau theem tom ntej. Yog li ntawd, JUNYUAN sau cov txheej txheem kev teeb tsa kom raug thiab kev teeb tsa ntawm lub ntsuas hluav taws xob electromagnetic hauv 7 yam hauv qab no.
※ Txhim kho txoj hauv kev ntawm electromagnetic flowmeter
1. Kab rov tav thiab ntsug installation:
Lub sensor tuaj yeem ntsia tau kab rov tav thiab ntsug, tab sis nws yuav tsum tau ua kom ntseeg tau tias cov xuab zeb thiab npuas tsis cuam tshuam rau kev ntsuas electrode, thiab cov electrode axis yuav tsum tau khaws cia kab rov tav. Thaum ntsia vertically, cov kua yuav tsum ntws los ntawm qab mus rau saum. Lub sensor tsis tuaj yeem ntsia tau rau ntawm qhov siab tshaj plaws ntawm cov raj xa dej, uas yog qhov ua rau muaj npuas npuas.
2. Xyuas kom tag nrho cov yeeb nkab installation:
Xyuas kom meej tias lub raj xa dej puv ntawm cov dej ntsuas thaum lub ntsuas ntsuas ntsuas, thiab yuav tsum tsis muaj lub xeev cov yeeb nkab puv. Yog tias lub raj xa dej tsis puv lossis lub qhov hluav taws xob tsis muaj, lub sensor yuav tsum tau nruab rau ntawm lub siphon.
3. Kev teeb tsa ntawm lub luj tshib, li qub thiab cov twj tso kua mis:
Txhawm rau kom muaj kev ruaj ntseg ntawm kev ntsuas, lub ntse electromagnetic flowmeter yuav tsum teeb tsa cov yeeb nkab ncaj nraim ua ntej thiab tom qab lub sensor. Yog tias qhov no tsis tuaj yeem ua tsis tau, yuav tsum tau siv lub flow stabilizer los yog qhov chaw hla ntawm qhov ntsuas ntsuas yuav tsum raug txo.
4. Lub sensor tsis tuaj yeem ntsia tau rau ntawm qhov dej nkag ntawm lub twj tso kua mis:
Txhawm rau kom tsis txhob muaj qhov tsis zoo, lub sensor tsis tuaj yeem ntsia tau rau ntawm cov dej nkag ntawm lub twj tso kua mis, tab sis yuav tsum tau muab tso rau ntawm lub qhov hluav taws xob ntawm lub twj tso kua mis.
5. Lub inlet thiab qhov hluav taws xob ncaj yeeb nkab seem ntawm lub sensor:
Qhov chaw zoo tshaj plaws rau kev teeb tsa yuav tsum raug xaiv nrog cov yeeb nkab ncaj txaus ua ntej thiab tom qab ntsuas qhov taw tes. Cov yeeb nkab ncaj ncaj yuav tsum siab dua lossis sib npaug rau 5D, thiab qhov hluav taws xob ncaj yeeb nkab seem yuav tsum siab dua los yog sib npaug rau 3D (D yog qhov nominal txoj kab uas hla ntawm lub sensor). Plug-in inlet ncaj yeeb nkab seem yuav tsum siab dua los yog sib npaug rau 20D, thiab qhov hluav taws xob ncaj yeeb nkab seem yuav tsum siab tshaj los yog sib npaug rau 7D (D yog lub nominal txoj kab uas hla ntawm lub sensor).
6. Kev teeb tsa thaum lub qhov hluav taws xob tso tawm:
Thaum lub qhov hluav taws xob vented, lub sensor yuav tsum tsis txhob ntsia rau ntawm qhov chaw uas cov yeeb nkab yog vented, tab sis yuav tsum tau muab ntsia rau ntawm qhov chaw qis. Thaum lub sensor raug ntsia rau hauv qab ntawm cov yeeb nkab, nws yuav tsum tau xyuas kom meej tias lub sensor tau ntim nrog cov kua thiab lub xeev cov yeeb nkab khoob tsis tuaj yeem tshwm sim.
7. Series installation thiab parallel installation:
Yog hais tias ob peb lub sensors yuav tsum tau txuas nrog nyob rau hauv series ntawm tib cov yeeb nkab nyob rau hauv ib theem zuj zus, qhov kev ncua deb ntawm txhua lub sensor yuav tsum yog tsawg kawg yog qhov ntev ntawm 2 sensors. Yog tias muaj ntau tshaj ob lub sensors raug teeb tsa nyob rau hauv tib lub sijhawm, qhov kev ncua deb ntawm cov sensors yuav tsum siab dua 1m.
※ Kev teeb tsa ntawm electromagnetic flowmeter
1. Yuav tsum muaj rau qhov chaw teeb tsa
Feem ntau, kev tiv thaiv qib ntawm lub plhaub electromagnetic flow sensor yog IP67, thiab cov kev cai hauv qab no raug txwv rau ntawm qhov chaw teeb tsa.
1) Thaum ntsuas cov kua theem sib xyaw, xaiv qhov chaw uas yuav tsis ua rau theem sib cais; thaum ntsuas ob lub ntsiab lus ua kua, tsis txhob txhim kho nws hauv qab qhov chaw sib tov tseem tsis tau zoo; thaum ntsuas cov tshuaj tiv thaiv cov kav dej, teeb tsa nws hauv qab ntawm cov tshuaj tiv thaiv seem uas ua tiav tag nrho;
2) Tsis txhob muaj lub siab tsis zoo hauv lub raj ntsuas kom ntau li ntau tau;
3) Xaiv qhov chaw uas muaj kev vibration me me, tshwj xeeb tshaj yog rau cov khoom siv sib xyaw ua ke;
4) Tsis txhob muaj lub cev muaj zog loj, cov hloov pauv loj, thiab lwm yam nyob ze kom tsis txhob cuam tshuam hluav taws xob;
5) Ib qho chaw uas nws yooj yim mus cuag cov av sib cais ntawm lub sensor;
6) Zam kom tsis txhob muaj cov roj corrosive hauv ib puag ncig ntau li ntau tau;
7) Qhov kub thiab txias nyob hauv thaj tsam ntawm -25/-10 txog 50/600 degree . Qhov kub ntawm cov qauv kev sib xyaw ua ke kuj raug rau cov khoom siv hluav taws xob thiab qhov ntau yog nqaim;
8) Tsis txhob tshav ntuj ncaj qha ntau li ntau tau;
2. Cov kev xav tau rau kev txhim kho cov kav dej ncaj nraim:
Ua ntej tshaj plaws, thov nco ntsoov tias lub sensor nws tus kheej tsis tuaj yeem siv los ua qhov chaw txhawb nqa. Nws tsis tuaj yeem txhawb nqa cov kav dej ua haujlwm uas nyob ib sab, thiab yuav tsum muaj cov yeeb nkab clamp kom nws nqa tau qhov hnyav. Txhawm rau kom tau txais kev ntsuas qhov tseeb, yuav tsum muaj qee qhov ntev ntawm cov yeeb nkab ncaj nraim ntawm cov khoom siv hluav taws xob electromagnetic flow sensor, tab sis nws qhov ntev yog qis dua li ntawm lwm cov ntsuas dej ntws.
Tom qab lub luj tshib 90o, T-tube, concentric reducer, thiab lub qhov rooj qhib tag nrho, cov yeeb nkab ncaj nraim ntawm 5 npaug ntawm txoj kab uas hla (5D) ntawm lub sensor inlet flange kev twb kev txuas nto yuav tsum tau, thiab li qub nrog sib txawv qhib yuav tsum 10D; cov kav dej ncaj nraim yog (2 ~ 3)D; tab sis tus npauj npaim valve disc yuav tsum tiv thaiv kom tsis txhob ncua mus rau hauv lub ntsuas ntsuas lub raj. Cov kab hluav taws xob sab saud thiab qis qis qis qhov ntev tau npaj los ntawm ntau cov qauv lossis cov txheej txheem pov thawj kuj tsis sib haum, thiab qee qhovelectromagnetic flowmetersxav tau cov kev xav tau siab dua li niaj zaus. Qhov no yog los xyuas kom meej tias tam sim no 0 5-qib precision ntsuas qhov yuav tsum tau ua.
3. Installation txoj hauj lwm thiab ntws kev taw qhia:
Lub sensor installation kev taw qhia yuav ua tau kab rov tav, ntsug los yog inclined (cov kua yuav tsum ntws horizontally los yog inclined upward) yam tsis muaj kev txwv. Txawm li cas los xij, nws yog ib qho tsim nyog los xyuas kom meej tias lub raj ntsuas yog coaxial nrog cov txheej txheem kav dej. Qhov sib txawv ntawm axis yuav tsum tsis pub tshaj 2MM. Cov kua-kua ob-theem kua yog nruab vertically thiab ntws los ntawm qab mus rau saum.
Qhov no tuaj yeem zam qhov tsis zoo ntawm qhov hnyav hauv zos hnav ntawm qis dua ib nrab ntawm lub hauv ob sab phlu thaum ntsia kab rov tav, thiab cov theem ntawm cov nag lossis daus ntawm qhov qis qis.
Thaum vuam lossis nplaim taws ua tiav nyob ze ntawm lub sensor, kev ntsuas kev sib cais yuav tsum tau coj los tiv thaiv cov hauv ob sab phlu los ntawm kev ua kom sov, thiab nws yuav tsum tau lees paub tias lub teeb liab kab ntawm lub ntsuas ntsuas tsis txuas los tiv thaiv kev puas tsuaj rau lub converter. Thaum txhim kho lub converter horizontally, lub electrode axis yuav tsum nyob rau hauv parallel mus rau lub qab ntug, tsis perpendicular mus rau lub qab ntug, vim hais tias cov electrode nyob rau hauv qab yog yooj yim them los ntawm sediments, thiab sab saum toj electrode yog yooj yim wiped los ntawm tej zaus npuas nyob rau hauv cov kua, npog lub electrode nto thiab ua rau cov teeb liab tso zis hloov pauv.
4. Kev teeb tsa cov kav dej tsis zoo:
Fluoroplastic lined sensors yuav tsum tau siv nrog ceev faj hauv cov kav dej tsis zoo; zoo siab piping yuav tsum tiv thaiv lub cim ntawm tsis zoo siab. Piv txwv li, hauv cov kav dej uas cov kua dej kub siab tshaj qhov kub hauv chav tsev, tom qab cov dej ntws tawm thiab cov dej ntws tawm ntawm lub sensor raug kaw thiab nres, cov kua dej txias thiab kev cog lus yuav ua rau lub siab tsis zoo. Lub valve tiv thaiv tsis zoo yuav tsum tau nruab ze ntawm lub sensor. Qee lub tuam txhab tau teev tseg tias lub siab ntawm PTFE thiab PFA yas hauv ob sab phlu siv hauv cov kav dej tsis zoo yuav siv tau ntawm 200C, 1000C, thiab 1300C. Lub siab yuav tsum ntau dua li cov kav dej uas tsis yog-conductive. Cov av flange yog clamped ntawm lub sensor flange thiab cov yeeb nkab flange.
5. Grounding:
Lub sensor yuav tsum tau grounded nyias (grounding kuj yog tsawg dua 10Ω). Nyob rau hauv txoj cai, hom kev sib cais yuav tsum tau grounded rau ntawm ib sab ntawm lub sensor, thiab lub converter yuav tsum tau grounded nyob rau tib lub grounding point. Yog tias lub ntsuas hluav taws xob tau teeb tsa rau ntawm lub raj xa dej nrog kev tiv thaiv cathodic corrosion, ntxiv rau kev sib txuas ntawm lub sensor thiab lub nplhaib hauv av ua ke, yuav tsum siv cov hlau tuab tuab (16 hli) los hla lub sensor thiab txuas ob lub flanges ntawm cov raj xa dej kom cais tawm. cathodic tiv thaiv tam sim no los ntawm lub sensor.
Qee lub sij hawm cov stray tam sim no loj dhau, xws li cov xau tam sim no ntawm cov electrolytic cell raws li cov electrolyte cuam tshuam qhov kev ntsuas ntawm EMF, tom qab ntawd cov ntsuas ntws thiab cov txheej txheem uas nws txuas nrog tuaj yeem raug hluav taws xob cais. Ib yam li ntawd, txoj kev no tseem tuaj yeem siv tau thaum lub cathodic tiv thaiv tam sim no cuam tshuam rau EMF ntsuas ntawm cov kav dej nrog kev tiv thaiv cathodic.