Cov neeg saib xyuas uas ntsiag to: 5 Cov yuam sij tseem ceeb kom ua tau zoo rau kev tiv thaiv Cathodic Kev Tiv Thaiv

Cov khoom siv raw tsis yog - sib ceg:

Zinc anodes:Siab - purity zinc (ua raws li cov qauv zoo li ASTM B418 hom kuv lossis hom} A-18001h) yog qhov tseem ceeb. Txawm hais tias tus nqi me me xws li hlau (FE> 0.0014%), txhuas (PB), lossis Cadmium txo qis. Hlau, tshwj xeeb, txhawb nqa kev tsim ntawm ib qho nyuaj, insulating oxide txheej ("passive") ntawm anode inpection ntev ua ntej nws lub peev xwm theoretical tau noj.

Txhuas anodes:Niaj hnub txhuas alloy anodes (piv txwv li, al-}} sib txawv zuj zus. Cov tsis huv xws li tooj liab (Cu> 0.01%) thiab hlau (FE> 0.09%) yog detrimenty, txhawb kev ua haujlwm passivation thiab txo qis kev ua haujlwm. Cov ntsiab lus silicon yuav tsum tau tswj kom nruj kom tsis txhob muaj kev cuam tshuam tsis zoo ntawm kev ua tau zoo.

Magnesium anodes:Siv feem ntau nyob rau hauv qis - Cov dej ua haujlwm (dej ntshiab), siab}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} Cov dej hiav txwv magnesium (zoo li ASTM B843 hom M1) yog qhov tseem ceeb. Hlau, npib tsib xee, tooj liab, thiab cobalt impurities ua raws li kev phom sij "pathodic outons," Drastically nrawm nrawm rau tus kheej {{Corrosion. Qhov no txhais tau tias anode nkim sij hawm ua hydrogen roj hloov siv cov txiaj ntsig tiv thaiv tam sim no, nws lub neej siv tau tseem ceeb.

Casting tej yam kev mob tswjfwm hais daws cov qauv & kev ua tau zoo:

Melting & Pouringing:Ua kom zoo dua qhov kub thiab txias tswj lub caij melting tiv thaiv oxidation thiab ua kom homogeneous sib xyaw ntawm cov ntsiab lus qub. Cov cua hlob puring tuaj yeem mus roj av (porosity) lossis oxides (suav nrog) nyob rau hauv anode.

Tus Nqi Cua Txias:Kev tswj hwm solidification yog qhov tseem ceeb. Sai sai kom txias tuaj yeem ua rau sab hauv kev ntxhov siab, vwj cov kab ke, lossis tsis xav tau microstructures uas yuav ua rau muaj kev sib cav me ntsis lossis nquag ua rau tsis ncaj corrosion ("chunking").

Tub ntxhais & ntxig:Tus tub rog hlau (feem ntau yog galvanized lossis pre {-}}}}}) yuav tsum yog cov pa roj carbon hlau thiab muaj cov khoom siv sib txuas nrog cov khoom anode. Kev sib raug zoo tsis zoo tsim lub siab - Tsis kam cuam tshuam, tabkaum ntws tam sim no, lossis tuaj yeem ua rau kev ua haujlwm tom ntej. Casting yuav tsum ua kom ua tiav encapsulation ntawm cov tub ntxhais thiab zam kev voids nyob ib puag ncig nws.

Ceeb toom:Cov lus tshaj tawm ua haujlwm siv cov tshuaj tswj tsis nruj, suav nrog kev kuaj tshuaj tsw qab rau cov khoom siv sib xws

Cov Dej Thom Siab Ua Ntej Ib puag ncig (Seasater, cov dej tawg):

Txhuas anodes:Tus neeg sib tw tsis muaj txiaj ntsig ntawm no. Ua kom tau zoo niaj hnub muab kev tsim hluav taws xob zoo tshaj plaws ntawm cov neeg tsav hluav taws xob siab (kwv yees}} { Lawv yog lub teeb ci ntsa iab thiab ua ntu zus thoob plaws thoob plaws hauv dej hiav txwv kub. Qhov no ua rau lawv xaiv cov qauv rau cov nkoj, pob zeb ocehore, dej hiav txwv {}} txias} cov qauv dej hiav txwv.

Zinc anodes:Nyob twj ywm xaiv txoj kev ntseeg siab, tshwj xeeb tshaj yog nyob rau hauv tej yam kev mob brackish qhov twg salinity yuav rashu tseem ceeb. Lawv muaj kev tsav tsheb me ntsis qis dua (kwv yees} vs {} {{} {«} ndlwg ntws los yog muaj peev xwm ua paug dej. Lawv feem ntau nyiam rau cov khoom siv hluav taws xob tseem ceeb (piv txwv li, cov tso tsheb hlau loj) lossis cov ntaub ntawv keeb kwm kev ua tau zoo. - Purity Zinc yog qhov tseem ceeb.

Tsawg rau nruab nrab salinity ib puag ncig (dej tsis taus dej, qis {- hypencov av):

Magnesium anodes:Excel qhov twg cov electrolyte kuj yog siab. Lawv txoj kev tsav dav dav siab (txog li ntawm {{vs tiv thaiv tam sim no txawm tias qhov av tsis txaus ntseeg qhov twg zinc lossis Aluminium yuav tsis muaj txiaj ntsig. Lawv qhov muaj peev xwm qis dua (kwv yees} amp-hrs / kg nyob ntawm alloy) yog offset ntawm alloy) yuav tsum tau los ua kom kov yeej kev tawm tsam. Lawv yog qhov kev xaiv thawj rau cov kav dej faus, cia nqa lub taub hau hauv qab, tso dej sov, thiab dej khov.

Zinc anodes:Yuav siv tau nyob rau hauv cov dej brackish me ntsis los yog marginalally zoo kawg li cas ploj zuj zus mus dhau ~ 1500 ohm {{1} cm. Lawv txoj kev tsav dav hlau qis dua los thawb tam sim no los ntawm kev tawm tsam.

Cov Kev Saib Xyuas Tseem Ceeb:

Kub:Siab dua kub feem ntau nce kev ua si anode tab sis tseem tuaj yeem nrawm tus kheej - corrosion (tshwj xeeb yog rau magnesium) thiab txo peev xwm. Aluminium alloys feem ntau muaj kev tiv thaiv ntau dua ntawm kev hloov pauv kub.

Dej Chemistry:Pollingants, sulphides, los yog qib siab ntawm cov pa roj carbon dioxide tuaj yeem qee zaum cuam tshuam ntawm tus cwj pwm tsis zoo, feem ntau ua rau kev poob haujlwm. Zinc tuaj yeem nkag siab ntau dua hauv cov dej qias neeg piv rau txhuas.

Txaus tus nqi:Kev ntws hluav taws xob muaj peev xwm zuj zus ntawm qhov chaw thiab muaj feem cuam tshuam kev tiv thaiv cov yeeb yaj kiab tiv thaiv. Txhuas alloys feem ntau qhia tau zoo dua kev yaig tsis kam dua li zinc.

Kev Sib Txuas Hluav Taws Xob: Lub Neej Ua Lifeline:

ROJ & TSHEB:Kev sib txuas ntawm anode tus txheej txheem ntawm tus tub ntxhais thiab cov qauv tiv thaiv yuav tsum yog qhov muaj zog, tsawg} tsis kam, thiab ruaj rau lub system tsim lub neej. Vuam (siv cov txheej txheem pom zoo thiab muaj feem siv Weld hlau) yog tus qauv kub rau kev txuas ncaj qha. Qhov kub vuam yog ib qho rau lub rajpelines.

Kev sib txuas kho tshuab:Qhov twg vuam tsis ua tau (piv txwv li, kom coated txheej txheem, muaj cov khoom siv hluav taws xob zoo (piv txwv li, ntxuav khoom) yog qhov tseem ceeb. Cov no yuav tsum yog tsim los zais cov kev sib txuas, codal cycling, thiab ib puag ncig kis yam tsis tau xoob yam tsis muaj xoob lossis corroding. Kev sib chwv tiv thaiv yuav tsum yog qhov tsis zoo piv rau cov kev sib tw.

Cable sib txuas:Rau tej thaj chaw deb anodes (ib txwm nyob rau hauv av), txoj hlua cable (feem ntau yog cov xlpe los yog xlpe insulated) yuav tsum muaj qhov loj me rau tam sim no thiab hluav taws xob poob qis. Kev sib txuas rau Anode cov tub ntxhais kawm yuav tsum tau ua nrog cov dej tshwj xeeb, cov khoom siv nruj los tiv thaiv electrolyte ingror thiab corrosion ntawm lub sij hawm txiav tawm. Cov khoom siv no feem ntau koom epoxy potting, compression foob, lossis cua sov - shrapple ntiv tes nrog mastic ntsaws ruaj ruaj.

Lub Cev Mounting: Ruaj Ntseg thiab Nyab Xeeb:

Qhia ncaj qha 2.Anodes welded lossis bolted ncaj qha rau tus qauv yuav tsum tau muab tso rau kev tawm tsam hydrodynamic rog (hauv dej), kev co, lossis cuam tshuam kev sib cav. Spacing los ntawm cov qauv saum npoo yuav tsum tso cai rau cov khoom xa tawm tam sim no thiab tiv thaiv kev tiv thaiv.

Sleds, racks, thiab bracelets:Rau cov ntug hiav txwv, cov anodes loj feem ntau yog mounted on roble steel thav ntawv (sleds). Rau kev tso tsheb hlau luam lossis cov qauv sib dhos, cov racks tau siv. Cov yeeb nkab cov yeeb nkab feem ntau nrum li sib faib "clacelets" clamped nyob ib ncig ntawm cov yeeb nkab, ua kom muaj hluav taws xob zoo rau kev sib cuag thiab lub cev zoo. Hull anodes feem ntau yog recessed los yog hloov pauv mus txo tus luag.

Kev tso nkag mus av:Faus anodes yuav tsum yog ib puag ncig los ntawm ib qho kev tsim nyog backfill (feem ntau qhov qis {}-}}}}}}}}}}}}}}}}}}}}}}}}}}- Lub hnab ntim backfill yuav tsum yog tsis ua tiav thaum lub sijhawm tso. Anodes yuav tsum tau muab tso rau ntawm txoj kev cuam tshuam kom yog rau cov qauv.

Zam kev tiv thaiv:Anodes yuav tsum muab tso rau qhov chaw uas lawv tam sim no tuaj yeem tiv thaiv kev tiv thaiv cov chaw tiv thaiv. Zam thaj chaw uas lwm cov qauv siv, khib nyiab, lossis anode tus kheej lub mounting kho vajtse tuaj yeem thaiv txoj kev tam sim no ("kev thaiv"). Qhov no yog tshwj xeeb yog qhov tseem ceeb nyob rau hauv cov geometceties zoo li ntug dej khaub ncaws lossis cov nkoj hluav taws xob.

Xam lub neej:

Lub theoretical lub neej ntawm kev txi anode tuaj yeem kwv yees siv cov qauv siv nyiaj tseem ceeb:
Lub neej (xyoo)=(mass of anode hlau (kg {}} hr / kg) x 8760 h 8760 hrs / xyoo

Pawg:Qhov nyhav ntawm lub zog anode cov khoom siv (tsis suav cov tub ntxhais, ntxig, kho vajtse).

Siv cov khoom:Sawv cev ntawm feem ntawm anode loj uas tau siv tau zoo ua ntej nws ceases kom muaj kev ntseeg siab (piv txwv li ploj ntawm cov tseem ceeb ntawm kev sib cuag, lossis kev ua haujlwm ntau dhau los yog depetion). Feem ntau 85 {{{4 4}} 90% rau kev tsim zoo zinc / txhuas anodes, 50-70% rau cov magnesium.

Anode muaj peev xwm:Cov khoom ntiag tug (piv txwv li, ~ 780- h / kg rau qhov zoo li ib, ~ 550} 1100 {}} 1100 {} 1100 {}} 1100 {}} 1100 {}} 1100 {}} 1100 {}

Tam sim no thov (Kuv):Tustag nrhoTxoj kev xav tau tam sim no rau polarize thiab tswj kev tiv thaiv ntawm tus qauv tag nrho. Qhov no yog muab tau los ntawm cov qauv thaj npoo av thiab nws cov kev xav tau tam sim no (ma / m²), uas nyob ntawm ib puag ncig, cov mob, kub, thiab lwm yam.Qhov no feem ntau yog qhov tseem ceeb tshaj plaws kuj nce siab tshaj plaws thiab ib qho chaw ua yuam kev yog tias tsis muaj kev sib nkag siab.

Yam khoom nrawm nrawm nrawm:

Siab dua qhov tsim nyog thov tam sim no:Cov txheej txheem pib txom nyem, cov kev puas tsuaj dhau los, kev ua tsis taus, cov dej kub ntau dua, qis tshaj cov ntsev tshaj li qhov xav tau (rau zn / al).

Tsawg anode ntawm kev siv:Cov tub ntxhais hluas txom nyem, cov chunking hnyav, passivation vim impurities lossis ib puag ncig.

Mechanical mob:Cuam tshuam, tshem tawm, yaig.

Hluav Taws Xob:Kev sib tiv tauj ntawm kev tiv thaiv tus qauv thiab ib qho tsis zoo ntawm cov khoom lag luam hlau hlau (piv txwv li cov nkoj muaj zog los hloov cov cp tam sim no, cov khoom siv anodes sai sai.

Saib xyuas: Lub qhov muag ntawm lub system:

Tej Zaum Kev Ntsuas:Lub pob zeb ntawm CP saib xyuas. Siv cov ntaub ntawv siv electrode (AG / AGC rau dej hiav txwv, CU / CUSO4 rau av), ntsuas cov peev txheej electrochemical ntawm cov qauv tiv thaiv. Nyeem ntau qhov tsis zoo ntau dua li qhov tsawg kawg nkaus tiv thaiv (piv txwv li, -0.80v vs ag / artc rau steel nyob rau hauv seawater) feem ntau qhia kev tiv thaiv. Cov ntawv tshawb fawb tsis tu ncua taug qab txoj kev ua tau zoo.

Kev Ntsuam Xyuas Pom:Lub sijhawm kuaj xyuas (dhia dej, rov qab, qhuav {} kev sib tw, cov teeb meem kev nyab xeeb zoo li cov teeb meem kev tiv thaiv marine.

Tam sim no Kev Tsim Tawm Kev Ntsuas:Ntsuas qhov tam sim no ntws los ntawm ib tus neeg anodes (siv shunt de resors lossis clamp - ntawm cov neeg uas tsis txaus los yog ua tsis tiav.

Hloov cov chiv keeb & lub tswv yim:

Depetion chaw pib:Anodes yog feem ntau hloov thaum lawv ncav cuag 60-80% siv (raws li kev tshuaj xyuas / ntsuas) kom ntseeg tau tias muaj kev tiv thaiv kev nyab xeeb thiab tsis txhob muaj kev tiv thaiv kev tiv thaiv.

Qhov ntsuas tsis tau:Kev them nyiaj hluav taws xob ntxiv, kev sib tw hnyav, kev ua haujlwm loj heev, lossis tsis muaj peev xwm ua tiav cov peev xwm tiv thaiv txawm tias muaj kev tiv thaiv theoretical.

Kev npaj ua si:Hloov yuav tsum tau npaj ua kom zoo ua ntej raws li kev soj ntsuam cov ntaub ntawv thiab suav lub neej. Nws feem ntau yog sib xyaw nrog lub sijhawm txij nkawm (piv txwv li, nkoj qhuav {}} docking, pipeline tshuaj xyuas). Xav txog kev yooj yim ntawm kev nkag tau thaum lub sijhawm tsim qauv.

Sau cia:Cov ntaub ntawv me heev ntawm cov sijhawm teeb tsa anode, qhov hnyav, nrhiav tau yog qhov tseem ceeb rau kev kwv yees hloov cov kev hloov ntawm yav tom ntej.

Cov qauv ntawm kev faib tawm tam sim no:

Attenuation:Kev tiv thaiv tam sim no ploj nrog qhov deb ntawm anode vim yog hluav taws xob tsis kam ntawm electrolyte (dej / av). Qhov siab dua ib puag ncig kev ua haujlwm (qis dua Resistivity), qhov deb dua qhov tam sim no yuav mus ua haujlwm zoo.

Shielding:Kev thaiv lub cev (lwm cov qauv, harris, txawm tias nthe cov kev loj hlob ntawm tam sim no, kev ua yeeb yam "qhov kev tiv thaiv" qhov kev tiv thaiv tsis txaus. Txheej ci ua raws li lub siab tawv, txo cov xim av hlau uas xav tau kev tiv thaiv.

Ntug Qhov Teeb Meem & Geometric Complexity:Tam sim no nyhav siab rau cov npoo, cov ces kaum, Welds, thiab ze rau kev txiav txim siab. Cov duab nyuaj (stiffeners

Tsim qauv txheej txheem:

Zoning:Faib cov qauv rau hauv cov yeeb yam rau cov aometry raws li gometry, ib puag ncig (piv txwv li, Cheeb Tsam Thaj Chaw nyob ntawm lub suab nrov), txheej zoo, thiab tseem ceeb. Xam qhov yuav tsum tau ua tam sim no rau txhua cheeb tsam.

Anode spacing:Raws li qhov xav tau tam sim no ib qho tso tawm rau ib qho me me (hom), tag nrho cov yam ntxwv tam sim no, thiab cov yam ntxwv ua raws. Taw rau txawm faib. Raug Hull anying tej zaum yuav 3-5 meters raws qhov ntev; Pipeline Coad Anodes tej zaum yuav raug kaw 100-300 metrers sib nrug nyob ntawm av tiv taus thiab txheej zoo. Cov qauv ua qauv software feem ntau siv rau cov txheej txheem nyuaj.

Qhov sib thooj rau thaj chaw tseem ceeb:Xyuas kom meej anode loj thiab cov tswv yim tso ze ze - kev pheej hmoo thaj chaw, cov cheeb tsam puas tsuaj, lossis thaj chaw muaj kev cuam tshuam rau kev yaum.

Zam kev phiv tsis zoo:Txoj hauj lwm anodes kom txo qis kev pheej hmoo ntawm hydrogen evolution (uas tuaj yeem ua rau txheej txheem loj heev, tshwj xeeb} tsav tsheb {}} voltage magnesium anodes. Zam kev zam anodes ncaj qha tawm tsam yog tias tsis cuam tshuam dab tsi tam sim no yog qhov kev txhawj xeeb.

Kev Xav 3D:Kev tiv thaiv yuav tsum them rau txhua qhov chaw. Rau cov txheej txheem nyuaj xws li ntug pa hluav taws xob, qhov no yuav tsum anodes ntawm ob txhais ceg, kev zawm hniav, sib xyaw ua ke nrog qhov tam sim no nrog 3D qhov chaw. Hulls xav tau Anodes faib ua raws qhov ntev, ntawm qhov dav, thiab qhov tob.

Txheej Txheej:Lub siab - Zoo, Zoo {{} Khi} tswj cov txheej txheem thiab drastically txo qhov kev thov tam sim no ntawm CP system. Sacp tiv thaiv cov txheej txheej qub txheej tsis xws luag (hnub so). Tus qauv tsim yuav tsum muaj qhov kev cia siab rau qhov kev cia siab ntawm lub sijhawm (txheej rhuav tshem).

Kev txheeb xyuas thiab kev hloov kho:Pib CP cov ntawv soj ntsuam tom qab kev teeb tsa yog qhov tseem ceeb los xyuas cov qib kev tiv thaiv thoob plaws tus qauv. Yog hais tias nyob rau hauv {{-}}} {{{} ode} odeode etectout thaj chaw lossis tawm yuav xav tau kev hloov kho. Qee lub sijhawm rov - Kev soj ntsuam xyuas saib xyuas hloov vim cov coupetion degradation lossis anode depletion.