Puas yog Magnetic Flapper Level Gauges Corrosion Resistant?|Phau Ntawv Qhia Kev Xaiv Khoom

Tom qab xyoo dhau los ntawm kev txhawb nqa kev lag luam rau cov neeg siv khoom lag luam xa tawm, ib lo lus nug tuaj ntau dua li yuav luag txhua yam thaum cov neeg yuav khoom siv cov khoom siv tshuaj lom neeg lossis dej khib nyiab: Yogmagnetic flapper qib gaugescorrosion resistant?

Feem ntau thawj zaug - cov neeg yuav khoom xav tias vim tias lub ntsuas ntsuas muaj lub cev tsis muaj steel, nws yuav ua rau cov kua corrosive. Kuv tau pom qhov kev ua yuam kev no ua rau muaj kev poob nyiaj ntau dua ib zaug. Tsis ntev tas los no, cov neeg siv tshuaj ua haujlwm tau ncav cuag tom qab lawv qhov ntsuas tshiab tau ua tsis tiav hauv rau lub hlis xwb. Lawv tau xaj tus qauv 304 stainless hlau chav nyob rau lawv cov sodium hypochlorite cia tso tsheb hlau luam. Cov ntsiab lus chloride hauv cov tshuaj ua rau pitting corrosion raws phab ntsa chamber, uas nws thiaj li perforated thiab leaked txheej txheem kua. Lub sij hawm poob thiab kev tu xyuas raug nqi ntau dua 20 npaug ntawm qhov lawv yuav tau siv rau cov kev qhia kom raug corrosion- ntsuas ntsuas.

Cov lus teb luv luv yog tsis yog - magnetic flapper qib gauges tsis inherently corrosion pov thawj. Lawv qhov kev ua tau zoo corrosion nyob ntawm kev xaiv cov khoom ntub dej, kev sib khi sib khi, thiab cov ntsiab lus tsim. Hauv phau ntawv qhia no, peb yuav rhuav tshem cov ntaub ntawv sib txawv li cas los tiv thaiv cov xov xwm corrosive, feem ntau ua rau corrosion tsis ua hauj lwm, thiab yuav ua li cas xaiv qhov ntsuas zoo rau koj cov kev ua haujlwm.

1.Dab tsi "Corrosion Resistance" Tiag Tiag rau Qib Gauges

Txhawm rau ntsuas kev ua haujlwm corrosion kom raug, koj thawj zaug yuav tsum paub qhov txawv ntawm cov khoom ntub thiab tsis yog - wetted Cheebtsam. Wetted qhov chaw yog txhua qhov chaw uas tuaj rau hauv kev sib cuag ncaj qha nrog cov txheej txheem nruab nrab: lub ntsuas chamber phab ntsa, sab hauv ntab los ua ke, txheej txheem flanges, valve trim, thiab sealing gaskets. Tsis yog- wetted qhov chaw zoo li lub qhov taw qhia sab nraud flapper rail thiab vaj tse tsis kov cov kua, yog li lawv tsis tshua muaj teeb meem corrosion los ntawm tus txheej txheem nws tus kheej - txawm hais tias lawv yuav xav tau kev tiv thaiv los ntawm cov pa phem hauv qhov chaw huab cua.

Feem ntau qhov yuam kev ntawm kev yuav khoom pib ntawm no. Ntau tus neeg yuav khoom tsuas yog kuaj lub chamber lub cev khoom thiab xav tias tag nrho cov ntsuas yog corrosion resistant. Qhov tseeb tiag, kev ua tsis tiav yuav luag ib txwm pib nrog qhov tsawg tshaj plaws wetted Cheebtsam: lub foob pheej yig, qis dua -qib ntab, lossis tus qauv valve haum uas tsis haum rau qhov nruab nrab. Lub 316L chamber txhais tau tias tsis muaj dab tsi yog tias lub ntab yog ua los ntawm 304 thiab cov ntsaws ruaj ruaj yog cov roj hmab nitrile.

Rau lub ntsuas hluav taws xob sib nqus kom muaj kev tiv thaiv corrosion tiag tiag, tag nrho cov khoom ntub dej yuav tsum tau teev kom phim qhov nruab nrab, qhov kub thiab txias ntawm daim ntawv thov. Tsis muaj universal "corrosion-resistant" qauv.

2.Common Corrosion hem rau Magnetic Flapper Gauges

Corrosion tsis zoo ib yam, thiab cov qauv sib txawv ua rau tsis ua hauj lwm hauv ntau txoj kev. Raws li cov ntaub ntawv kev txhawb nqa teb, cov no yog plaub hom kev ua haujlwm tsis zoo tshaj plaws rau kev ntsuas qib sib nqus hauv kev pabcuam kev lag luam.

2.1 General Tshuaj Corrosion

Qhov no yog hom yooj yim tshaj plaws: cov kua maj mam noj tam sim ntawm cov hlau nto lub sij hawm. Nws yog ib yam nrog cov kua qaub uas muaj zog, cov tshuaj caustic, thiab cov kua qaub siab siab -. Kev xeb me me tuaj yeem kwv yees tau thiab tuaj yeem suav nrog cov phab ntsa ntxiv, tab sis kev xeb loj heev yuav perforate tus qauv steel chamber hauv lub hlis lossis txawm lub lis piam.

2.2 Pitting & Crevice Corrosion

Qhov no yog hom kev ua tsis zoo tshaj plaws, tshwj xeeb tshaj yog cov hlau tsis muaj chloride - muaj cov xov xwm xws li dej hiav txwv, brine, thiab sodium hypochlorite. Es tsis txhob hnav sib npaug ntawm qhov chaw, corrosion tsim me me, qhov tob hauv cov hlau. Cov pits no nyuaj rau pom thaum lub sijhawm tshuaj xyuas niaj hnub, thiab lawv tuaj yeem perforate lub chamber phab ntsa nrog yuav luag tsis pom kev ceeb toom los ntawm sab nraud.

Crevice corrosion tshwm sim nyob rau hauv nruj qhov khoob - nyob ib ncig ntawm lub flange gaskets, ntab cov lus qhia, thiab lub rooj zaum valve - qhov twg cov kua nkag thiab cov pa oxygen poob. Nws feem ntau teem nyob rau hauv ntev ua ntej lub ntsiab chamber phab ntsa qhia tej yam tshwm sim ntawm hnav.

2.3 Vapor Chaw Corrosion

Qhov no yog qhov feem ntau overlooked tsis ua hauj lwm point. Ntau tus neeg yuav khoom qhia cov ntaub ntawv rau cov kua theem nkaus xwb, thiab tsis nco qab tias corrosive vapors thiab acid fumes sau rau sab sauv ntawm lub tank thiab ntsuas chamber. Cov vapors condense nyob rau saum npoo av thiab sab saum toj flange, ua rau corrosion nyob rau hauv cov cheeb tsam uas tsis tau ntsuas rau cov tshuaj raug. Rau cov kua qaub los yog volatile xov xwm, vapor theem corrosion yog ib qho tseem ceeb rau account rau li kua theem corrosion.

2.4 Kev nyuaj siab Corrosion Cracking

Raws li kev sib xyaw ua ke ntawm cov neeg kho tshuab kev ntxhov siab thiab cov kab mob corrosive, hlau tuaj yeem tsim cov kab nrib pleb uas kis tau sai. Qhov no yog ib qho kev pheej hmoo tshwj xeeb hauv siab -kub, siab - cov ntawv thov siab nrog cov tshuaj chloride lossis sulfide- muaj cov xov xwm. Qhov tshwm sim yog qhov hnyav: qhov tawg tam sim ntawd hauv chav ntsuas tuaj yeem ua rau muaj kev puas tsuaj loj ntawm cov txheej txheem cov kua dej.

3.Cov khoom siv xaiv & lawv cov kev ua tau zoo corrosion

Hauv qab no yog ib qho kev tawg ntawm cov ntaub ntawv ntub dej ntau tshaj plaws rau cov khoom sib nqus flapper qib ntsuas, lawv cov kev siv ib txwm, thiab lawv cov kev txwv.

Sealing Khoom Compatibility

Kev foob tsis ua haujlwm feem ntau yog thawj qhov teeb meem ntawm corrosion, thiab nws yuav luag ib txwm tshwm sim los ntawm cov khoom siv gasket tsis sib haum. Rau kev pabcuam corrosive:

• NBR (Nitrile Roj Hmab): Tsuas yog rau cov roj nruab nrab thiab dej; ua tsis tau sai hauv cov kua qaub thiab cov kuab tshuaj.
• FKM (Viton): Zoo rau feem ntau cov kua qaub, roj, thiab roj; tsis pom zoo rau muaj zog caustics lossis chav.
• PTFE: Cov tshuaj tiv thaiv zoo heev thoob plaws yuav luag txhua qhov xov xwm; tus qauv xaiv rau kev pabcuam corrosive.
• Rau txhua daim ntawv thov corrosive, nco ntsoov paub meej tias cov ntaub ntawv foob raug teev rau tib tus qauv corrosion raws li lub ntsiab chamber lub cev.

4.Sab saum toj 5 Ua Ntej Ua Ntej Corrosion Failure

Tom qab xyoo ntawm kev daws teeb meem corroded gauges rau cov neeg siv khoom, cov no yog cov feem ntau zam tau thiab feem ntau yuam kev thaum lub sij hawm yuav khoom.

4.1Cov khoom siv tsis sib xws

Cov neeg muag khoom qee zaum yuav tshaj tawm "316L ntsuas" tab sis txiav cov nqi los ntawm kev siv 304 rau ntab, valve fittings, lossis cov khoom siv sab hauv. Qhov qis dua -qib qhov chaw corrode ua ntej, ua rau ntab tsis ua hauj lwm los yog lub foob xau ntev ua ntej lub ntsiab chamber qhia kev puas tsuaj. Ib txwm xav kom nthuav tawm tag nrho cov ntaub ntawv ntub dej, tsis yog lub cev chamber xwb.

4.2 Tsis quav ntsej Vapor Phase Corrosion

Raws li tau hais ua ntej lawm, cov kua qaub thiab cov vapors volatile yuav corrode sab sauv ntawm qhov ntsuas ib yam li cov kua nws tus kheej. Qhov no yog qhov tseeb tshwj xeeb rau hydrochloric acid, nitric acid, thiab lwm yam fuming kua. Yog tias koj qhov nruab nrab muaj lub siab vapor siab, tag nrho cov wetted ntau ntawm qhov ntsuas yuav tsum tau ntsuas rau corrosion, tsis yog cov kua - theem.

4.3 Overestimating Stainless hlau muaj peev xwm

304 stainless hlau yog ib qho zoo tshaj plaws - cov khoom siv lub hom phiaj, tab sis nws tsis yog corrosion proof. Txawm tias tsis tshua muaj chloride ions yuav ua rau pitting lub sij hawm. Rau cov dej khib nyiab nrog cov ntsiab lus ntsev me me, lossis ib daim ntawv thov nrog cov tshuaj chlorine tsis tu ncua, 316L yog qib tsawg kawg nkaus.

4.4Tsawg-Cov neeg muag khoom raug nqi siv cov khoom tsis zoo

Kev ua lag luam yog tag nrho ntawm cov neeg muag khoom uas muab cov ntsuas stainless hlau ntawm tus nqi qis qis. Feem ntau, lawv siv qis dua - qib alloys (xws li 201 stainless) ua lag luam li 304, los yog siv nyias - ntsuas cov khoom siv phab ntsa uas tsis muaj kev tiv thaiv corrosion. Cov ntsuas no yuav zoo ib yam nyob rau sab nraud, tab sis lawv lub neej kev pabcuam hauv kev pabcuam corrosive tuaj yeem tsawg dua li peb lub hlis twg ntawm chav tsev tsim tau zoo.

4.5 Hla kev soj ntsuam niaj hnub

Corrosion yuav luag ib txwm pib me me. Kev soj ntsuam pom txhua xyoo thiab cov phab ntsa tuab tuaj yeem ntes tau thaum ntxov pitting lossis foob degradation ua ntej nws ua rau xau. Rau ib puag ncig corrosion hnyav, bi- kev tshuaj xyuas ib xyoos ib zaug yog ib qho nqi qis - txoj hauv kev kom ncua sij hawm ntsuas lub neej thiab zam kev kaw tsis tau npaj tseg.

5.Yuav Ua Li Cas Xaiv Qhov Corrosion Tiag tiag -Resistant Magnetic Gauge

Ua raws li cov kauj ruam no kom paub tseeb tias koj tau txais lub ntsuas ntsuas uas yuav tuav tau hauv koj cov xwm txheej tshwj xeeb.

5.1 Pib nrog cov ntsiab lus nruab nrab tiavTsis txhob cia li qhia rau koj tus neeg muag khoom cov kua yog "corrosive." Muab cov tshuaj muaj pes tsawg leeg, concentration, kev khiav hauj lwm kub, kev khiav hauj lwm siab, thiab tej yam ntxwv vapor theem. Qhov kev nthuav dav ntau dua koj muab, qhov tseeb dua cov lus pom zoo ntawm cov khoom yuav yog.

5.2 Qhia tag nrho cov wetted qhov chaw, tsis yog lub chamber xwbKoj qhov kev yuav khoom tshwj xeeb yuav tsum sau cov khoom xav tau rau lub chamber, ntab, flanges, li qub, thiab gaskets. Xav tau cov ntaub ntawv pov thawj zeb nrog kev xa khoom kom paub tseeb tias ua raws.

5.3 Siv lined tsim kom muaj zog corrosionRau cov xov xwm corrosive heev, PTFE-lined steel gauges muaj ze li ntawm tib yam corrosion kuj zoo li txawv alloys ntawm ib feem ntawm tus nqi. Lawv yog cov nqi ntau tshaj -kev xaiv zoo rau feem ntau cov kua qaub thiab muaj zog alkali daim ntaub ntawv.

5.4 Ntxiv kev tiv thaiv corrosion rau kev pabcuam hnyavRau cov ntawv thov uas paub qhov siab corrosion, qhia kom meej ntxiv chamber phab ntsa thickness. Kev nce me me ntawm tus nqi them ua ntej yuav ntxiv xyoo ntawm kev pabcuam lub neej.

5.5 Sib tham ntawm ntug rooj plaubYog tias koj daim ntawv thov muaj qhov kub thiab txias ntxiv rau corrosion, sib xyaw cov xov xwm, lossis kev ua haujlwm tsis zoo, nug koj tus neeg muab kev pabcuam rau kev tshuaj xyuas. Ob peb hnub ntawm engineering tshuaj xyuas pem hauv ntej yuav tiv thaiv lub hlis ntawm downtime tom qab.

6.Cov lus nug nquag

Q: Puas yog 304 stainless hlau haum rau kev pabcuam dej khib nyiab?

Rau cov dej khib nyiab huv hauv nroog nrog cov ntsiab lus chloride tsawg, 304 yuav ua haujlwm tau zoo. Rau cov dej khib nyiab hauv kev lag luam nrog ntsev, kua qaub, lossis cov tshuaj bleach residuals, 316L yog qhov tsawg kawg nkaus pom zoo qib kom tsis txhob pitting corrosion thaum lub sij hawm.

Q: Puas tuaj yeem sib nqus flapper gauges tuav concentrated hydrochloric acid?

Standard stainless hlau gauges tsis tuaj yeem - hydrochloric acid yuav corrode 304 thiab 316L sai. Rau daim ntawv thov no, koj xav tau PTFE-lined ntsuas chamber nrog PTFE cov ntsaws ruaj ruaj thiab sib haum float tsim.

Q: Ntev npaum li cas PTFE - kab sib nqus ntsuas ntsuas nyob ntev?

Raws li ib txwm ua haujlwm nyob rau hauv qhov kub thiab txias txwv, PTFE- kab ntsuas kab feem ntau kav ntev li 8-12 xyoo hauv kev pabcuam corrosive - kwv yees li 3-5 npaug ntawm kev pabcuam lub neej ntawm tus qauv stainless hlau ntsuas hauv tib qhov nruab nrab. Lub neej tiag tiag nyob ntawm qhov concentration, qhov kub thiab txias, thiab kev saib xyuas.

Q: Puas tuaj yeem xeb ua rau cov hlau nplaum nplaum nplaum?

Yog lawm. Corrosion tsim cov khoom ntxhib thiab cov khib nyiab xeb uas tsim nyob nruab nrab ntawm cov ntab thiab cov phab ntsa chamber, thaum kawg ua rau cov ntab khi thiab muab cov ntawv nyeem cuav. Qhov no yog ib qho ntawm cov lus ceeb toom ntxov tshaj plaws tias corrosion yog nce hauv qhov ntsuas.

Xaus

Sib nqus flapper qib ntsuas tuaj yeem tiv taus corrosion heev - tab sis tsuas yog thaum lawv tsim nrog cov ntaub ntawv zoo rau koj qhov nruab nrab. Tsis muaj universal corrosion- ntsuas ntsuas, thiab xav tias ib qho me me haum rau txhua qhov yog txoj hauv kev ceev tshaj plaws kom xaus nrog kev xau, poob qis, thiab cov nqi npaj txhij txog.

Siv sijhawm los ua kom haum cov ntaub ntub dej, cov khoom sib khi, thiab cov ntsiab lus tsim rau koj cov txheej txheem txheej txheem yuav muab koj lub ntsuas ntsuas uas kav ntau xyoo nrog kev saib xyuas tsawg. Rau kev xeb me me, 316L stainless hlau yog qhov txhim khu kev qha, tus nqi - xaiv tau zoo. Rau cov kua qaub muaj zog, alkalis, thiab siab - chloride ib puag ncig, kev tsim kho kab yog qhov tsim nyog rau kev nqis peev ua ntej.

Yog tias koj tsis paub meej tias cov khoom siv twg tsim nyog rau koj daim ntawv thov, xa peb pab neeg ua haujlwm koj lub tank tsis thiab cov ntsiab lus nruab nrab. Peb mam li tshuaj xyuas koj cov xwm txheej thiab pom zoo rau kev cai- kho kom haum magnetic level gauge solution, nrog rau tag nrho cov kev taw qhia txog kev teeb tsa chaw taws teeb thiab ntev -lub sij hawm tom qab- kev muag khoom.

Hu rau tam sim no

Cov ntaub ntawv

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