(1) Sib
Teeb meem tshwm sim: qhov me me tshwm sim hauv zos ntawm qhov chaw ntawm lub phaj. Cov qhov no feem ntau yog sib sib zog nqus thiab muab faib rau hauv cov qauv dotted. Cov tsos ntawm pitting yuav maj mam tsis muaj zog ntawm lub phaj thiab tej zaum yuav ua rau cov pa tawm ntawm qhov nruab nrab. Qhov no muaj ntau dua thaum cov hlau tsis muaj hlau siv los kho cov xov xwm uas muaj chloride ions. Kev tsom xam: Qhov no feem ntau yog vim muaj cov corrosive ions (xws li chloride ions) hauv nruab nrab. Thaum cov zaj duab xis passivation nyob rau saum npoo ntawm lub phaj raug rhuav tshem, cov ions no yuav tsim cov roj teeb me me hauv cov cheeb tsam hauv zos, ua kom cov hlau ua kom nrawm dua. Tsis tas li ntawd, qhov tsis sib xws ntawm lub phaj nto, xws li khawb hauv zos thiab impurity adhesion, tuaj yeem ua rau pitting tau yooj yim. Kev daws: Ua ntej, rau cov xov xwm corrosive heev xws li chloride ions, xav txog kev hloov lawv nrog ntau cov ntaub ntawv corrosion-resistant phaj, xws li titanium alloys. Yog tias cov hlau tsis muaj hlau txuas ntxiv siv, cov tshuaj chloride ion concentration hauv nruab nrab yuav tsum tau tswj nruj nruj thiab cov tshuaj tiv thaiv corrosion yuav tsum tau ntxiv. Nyob rau tib lub sij hawm, thaum lub sij hawm installation thiab txij nkawm, xyuas kom meej tias qhov chaw ntawm lub phaj yog huv si thiab du kom tsis txhob khawb. Rau cov phaj uas twb tau ntsib pitting, yog tias qib ntawm corrosion yog lub teeb, lawv tuaj yeem polished thiab kho, thiab tom qab tshem cov khoom siv corrosion, kev kho mob tuaj yeem ua tau; Yog tias qhov corrosion hnyav heev, daim hlau yuav tsum tau hloov lub sijhawm.
(2) Kev tshwm sim ntawm cov teeb meem corrosion crevice: Lawv feem ntau tshwm sim ntawm cov npoo uas lub sealing gasket ntawm lub phaj hu rau lub phaj, los yog ntawm kev sib txuas ntawm daim hlau. Nws manifests raws li corrosion ntawm cov hlau nyob rau hauv lub crevice, uas yuav ua rau kev puas tsuaj rau lub sealing gasket thiab to ntawm nruab nrab. Kev tsom xam: Vim qhov tsis zoo ntawm qhov nruab nrab hauv qhov crevice, ib qho chaw tshwj xeeb corrosive tsim. Nyob rau hauv ib puag ncig no, yam xws li qhov sib txawv ntawm cov pa oxygen concentration thiab kev hloov pauv hauv cov khoom nruab nrab yuav ua rau lub zos electrochemical corrosion. Piv txwv li, thaum lub sealing gasket muaj hnub nyoog thiab shrinks, ua rau qhov sib txawv nce, qhov teeb meem no yuav tshwm sim. Kev daws: Xaiv cov khoom siv sealing uas tsim nyog los xyuas kom meej tias nws sib haum nrog lub phaj thiab kev ua haujlwm zoo sealing. Thaum lub sij hawm installation, xyuas kom meej tias lub gasket raug ntsia rau hauv qhov chaw kom tsis txhob muaj qhov khoob. Tsis tu ncua xyuas thiab hloov cov aging sealing gaskets. Rau cov cheeb tsam uas crevice corrosion tau tshwm sim, sealants tuaj yeem siv rau kev kho hauv zos, tab sis yog tias qhov corrosion hnyav heev, lub phaj lossis tag nrho cov khoom siv hluav taws xob yuav tsum tau hloov.
(3) Scale
Teeb meem tshwm sim: Nyob rau hauv lub phaj kub exchanger uas ua cov txheej txheem dej, ib txheej ntawm cov dawb los yog greyish dawb hard scale yuav maj mam tsim nyob rau saum npoo ntawm lub phaj. Lub xub ntiag ntawm nplai yuav txo qhov kev hloov pauv ntawm lub tshav kub ntawm lub phaj, ua kom cov dej tsis kam, thiab ua rau kev ua haujlwm ntawm cov khoom siv hluav taws xob poob qis. Ua rau kev tsom xam: Lub solubility ntawm calcium, magnesium thiab lwm yam ions hauv dej txo qis thaum lub sij hawm cua sov, thiab lawv precipitate thiab nyob rau saum npoo ntawm lub phaj. Thaum cov dej kub siab thiab cov dej hardness siab, qhov ceev ntawm cov nplai tsim yuav nrawm. Kev daws: Rau cov dej tawv, cov khoom siv dej softening tuaj yeem ntsia tau rau ntawm cov dej nkag los txo cov ntsiab lus ntawm calcium thiab magnesium ions hauv dej. Ntxuav lub phaj kub exchanger tsis tu ncua. Cov tshuaj ntxuav cov txheej txheem tuaj yeem siv los ua kom cov nplais nrog cov tshuaj ntxuav cov kua qaub, tab sis yuav tsum tau them nyiaj rau kev tswj cov concentration ntawm cov tshuaj ntxuav thiab lub sij hawm ntxuav kom tsis txhob xeb rau lub phaj. Txoj kev ntxuav lub cev xws li kev siv lub tshuab ntxhua khaub ncaws los yog lub tshuab ntxhua khaub ncaws tuaj yeem siv tau. (II) Scale
Teeb meem tshwm sim: Ib txheej ntawm cov nplai tsim los ntawm impurities xws li roj, kab mob, thiab cov av yog txuas rau saum npoo ntawm lub phaj, uas ua rau lub tshav kub hloov ntawm lub phaj tsis zoo, thiab tuaj yeem ua rau cov kab mob, cuam tshuam rau qhov zoo ntawm qhov nruab nrab. Ua rau tsom xam: Nws yog ib qho yooj yim los tsim thaum ua cov xov xwm uas muaj roj lossis impurities. Piv txwv li, hauv kev ua zaub mov lossis tshuaj lom neeg, impurities nyob rau hauv nruab nrab nkag mus rau hauv lub tshav kub exchanger yam tsis tau lim tag nrho. Tsis tas li ntawd, thaum lub tshav kub exchanger khiav mus ntev, cov kab mob microorganisms yuav muab ntau nyob rau hauv ib tug haum kub thiab nruab nrab ib puag ncig, uas yuav kuj tsim av. Kev daws: Txhim kho cov cuab yeej lim dej zoo ntawm qhov nkag ntawm lub tshuab hluav taws xob kom tshem tawm cov khoom loj ntawm impurities thiab roj hauv nruab nrab. Rau cov av uas twb tsim lawm, koj tuaj yeem siv cov tshuaj ntxuav alkaline los ntxuav nws, thiab rau cov av microbial, koj tuaj yeem ntxiv fungicides los kho nws. Rov qab ntxuav thiab nplawm lub tshav kub hloov pauv tsis tu ncua kom tiv thaiv cov av nkos.
(4) Local deformation
Teeb meem tshwm sim: Cov cheeb tsam hauv cheeb tsam ntawm lub phaj muaj bulges lossis kev nyuaj siab, uas yuav hloov cov duab ntawm cov dej ntws ntawm cov phaj, cuam tshuam rau kev faib cov kua dej thiab cov cua kub sib txawv, thiab kuj tuaj yeem ua rau muaj kev sib tsoo thiab hnav ntawm daim hlau.
Ua rau kev tsom xam: Nws yuav yog vim muaj kev quab yuam sab nraud ntau dhau thaum lub sijhawm teeb tsa, lossis qhov kub thiab txias hauv zos lossis siab thaum ua haujlwm. Piv txwv li, thaum lub tshav kub exchanger yog ib feem thaiv, lub siab nyob rau hauv lub cheeb tsam nce sharply, uas yuav ua rau lub zos deformation ntawm lub phaj.
Kev daws: Thaum lub sij hawm installation, ua raws li cov txheej txheem kev khiav hauj lwm thiab siv cov cuab yeej tsim nyog kom tsis txhob muaj zog sab nraud ntawm lub phaj. Rau cov deformation hauv zos uas tshwm sim thaum lub sijhawm ua haujlwm, yog tias qhov deformation me me, koj tuaj yeem sim siv cov cuab yeej kho tshwj xeeb rau kev kho cov yas; yog tias qhov deformation loj heev, koj yuav tsum hloov lub phaj. Nyob rau tib lub sijhawm, tshawb xyuas thiab tshem tawm cov kev ua txhaum uas ua rau lub zog hauv zos lossis qhov kub thiab txias txawv txav raws sijhawm.
(5) Tag nrho deformation
Teeb meem tshwm sim: Tag nrho cov phaj yog khoov los yog twisted, uas yuav cuam tshuam rau kev ua haujlwm ntawm lub phaj kub exchanger, uas ua rau cov sealing tsis zoo thiab txo qis hauv kev sib pauv hluav taws xob.
Ua rau kev tsom xam: Feem ntau yog vim lub sijhawm ua haujlwm ntev nyob rau hauv cov xwm txheej tshaj qhov tsim siab lossis kub ntawm lub phaj, lossis kho tsis sib xws ntawm lub phaj thaum lub sijhawm teeb tsa, ua rau lub zog tsis sib npaug.
Kev daws: nruj me ntsis tswj cov kev khiav hauj lwm tsis ntawm lub tshav kub exchanger los xyuas kom meej tias nws nyob rau hauv lub tsim ntau yam ntawm lub phaj. Yog tias pom tag nrho deformation, nres kev ua haujlwm tam sim ntawd, xyuas thiab kho lub installation. Rau cov phaj uas tau raug deformed hnyav thiab tsis tuaj yeem kho, lawv yuav tsum tau hloov, thiab cov kev ua haujlwm thiab kev teeb tsa zoo ntawm tag nrho cov khoom siv hluav taws xob yuav tsum tau soj ntsuam tag nrho thiab txhim kho.
