Yuav Ua Li Cas Tshawb Xyuas thiab Kho Cov Leak hauv PTFE Thaum tshav kub kub Exchanger (Cov txheej txheem kua dej sib xyaw nrog kev siv hluav taws xob)

Qhov tawm ntawm cov dej txias yog greasy, thiab tsw zoo li acid. "Cov txheej txheem cov kua dej ntws tawm ntawm qhov chaw siv hluav taws xob. Qhov no yog lub tswb ceeb toom rau ib puag ncig tus kws tshaj lij. Qhov no tsis yog qhov teeb meem maj mam ua kom zoo, lossis qhov teeb meem kev saib xyuas niaj hnub, tab sis muaj kev sib kis ntawm ib puag ncig, kev nyab xeeb thiab kev tswj xyuas.

Ib qho xau hauv PTFE lub tshuab hluav taws xob yog qhov sib tsoo ncaj qha ntawm ob lub tshuab sib cais. Thaum cov kua dej sib xyaw ua ke, cov pa phem tuaj yeem txav mus los ntawm cov khoom siv hluav taws xob sai, ua rau cov khoom siv hauv qab thiab ua txhaum cov kev txwv. Cov lus teb rau qhov teeb meem tsis yog kev xav, tab sis kev cais tawm thiab kev txheeb xyuas.

Pom Cov Ntawv Ceeb Toom Thaum Ntxov

Hla-kev sib kis tsis tshua tshwm sim yam tsis tau ceeb toom. Feem ntau, cov neeg ua haujlwm pom kev hloov pauv ntawm cov nqi hluav taws xob ua ntej. Cov dej txias tuaj yeem ua tsis muaj xim, daj lossis greasy. Nyob rau hauv cov txheej txheem corrosive, lub voj siv hluav taws xob yuav muaj qhov txawv txav ntawm cov kua qaub los yog qhov tsis xav tau nce hauv kev coj ua. Cov no yog cov cim qhia tau zoo uas cov txheej txheem dej nkag mus rau hauv qhov hluav taws xob hluav taws xob.

Tsis tas li qhov kev coj cwj pwm siab yog muab cov ntsiab lus tseem ceeb. Slow siab degradation ntawm ib sab ntawm lub exchanger uas tsis muaj outward leak feem ntau qhia kev hloov mus rau sab hauv ntawm circuits. Piv txwv li, qhov txo qis hauv raj- sab siab nrog rau qhov nce hauv lub plhaub- sab siab qhia tau tias ntws tsiv teb tsaws hla ib qho tsis muaj zog.

Hauv cov xwm txheej zoo dua, cov khoom siv corrosion kuj tseem tuaj yeem pom hauv lub voj voog hluav taws xob. Qhov no tshwj xeeb tshaj yog kev txhawj xeeb vim tias nws cuam tshuam tsis tu ncua, tsis yog kev puas tsuaj loj. Thaum kis kab mob mus txog qib no, yuav tsum tau sib cais ceev ceev kom tsis txhob muaj kev puas tsuaj loj -.

Nyob qhov twg los feem ntau pom

PTFE heat exchanger leaks yog yuav luag ib txwm tsis yog -random. Lawv tsom mus rau peb qhov tseem ceeb: gasketed flanges, raj - mus rau -tubesheet pob qij txha thiab PTFE hlab.

Cov tshuab uas ua kom sov caij tsheb kauj vab lossis tsis ua kom lub zog zoo tuaj yeem muaj teeb meem gasket. Tube-rau-tubesheet junctions tuaj yeem ua tsis tiav vim kev nthuav dav sib txawv, tshuaj lom neeg los yog kev ntxhov siab. Kuj tseem muaj peev xwm, tab sis tsawg dua, yog tawg PTFE hlab vim yog kev siv tsis raug, overpressure lossis ntev - lub sij hawm qaug zog hauv cov tshuaj muaj zog.

Kev paub txog cov kev cia siab ntawm qhov tsis ua haujlwm no coj ob qho tib si kev tshawb nrhiav thiab kev kho cov tswv yim.

Leak Detection Procedure Step by Step

Thawj kauj ruam yog tag nrho seclusion. Thaum tshav kub kub exchanger yuav tsum raug cais tawm ntawm cov txheej txheem thiab cov khoom siv hluav taws xob. Kev rho tawm li qub ib leeg tsis txaus yog tias hla - pom pom muaj dej. Kev sib cais zoo thiab kev sib cais ntawm lub cev yog qhov nyiam. Tom qab ntawd ob sab yuav tsum tau drained kom huv si. Yog tias muaj cov kab mob sib kis loj heev, yuav tsum tau yaug dej ua ntej kuaj.

Lub exchanger yog rov cais thiab npaj rau kev sim siab. Ib sab, feem ntau yog lub raj sab, yog siab nrog qis - cua siab lossis roj inert, feem ntau nyob rau hauv thaj tsam ntawm 1-2 bar. Zam kev kub siab los tiv thaiv kev puas tsuaj ntxiv rau cov khoom uas twb muaj zog lawm.

Tom qab ntawd lub soj ntsuam chamber yog qhov opposite sab. Yog tias ua tau, nws tau ntim nrog dej. Kev kuaj pom dej hauv qhov system no yooj yim heev. Cov npuas yuav tshwm sim ntawm qhov chaw tsis ua haujlwm. Qhov twg submersion tsis tuaj yeem ua tau (qhov loj dua lossis ruaj khov) ib qho kev siv sab nraud ntawm cov tshuaj xab npum tuaj yeem siv rau thaj chaw uas xav tias xau.

Cov npuas tsis dag, txawm tias me ntsis txhaum yuav tshwm sim hauv kev sim nruj. Qhov tsis tu ncua ntawm npuas ntawm lub flange taw qhia rau qhov ua txhaum gasket. Yog tias npuas pom nyob ib ncig ntawm lub raj xa ntawv, qhov teeb meem feem ntau yog qhov tsis ua haujlwm ntawm lub raj - rau -tubesheet seal. Qhov kev pom zoo ntawm ib qho tawg lossis perforated PTFE raj yog kev soj ntsuam ntawm npuas tam sim ntawd los ntawm lub raj kawg.

Nyob rau hauv siab -cov tshuab muaj tseeb lossis qhov chaw xau me me uas lawv tsis tuaj yeem kuaj pom qhov muag, lub tshuab nqus dej helium tuaj yeem ua haujlwm kom raug ntau dua. Kev kuaj Helium yog qhov rhiab heev dua li qhov ntsuas dej lossis xab npum thiab tuaj yeem kuaj xyuas micro- leaks uas lwm tus tuaj yeem nco tau.

Nkag siab qhov Failure Location

Lub hauv paus ntawm qhov xau yuav tsum raug txheeb xyuas kom raug ua ntej txiav txim siab txog kev kho mob. Cov xwm txheej yooj yim tshaj plaws yog flange to, feem ntau tshwm sim los ntawm gasket tsis ua hauj lwm los yog tsis muaj qhov tseeb bolt loading. Lub raj xa dej yog qhov nyuaj dua thiab feem ntau cuam tshuam nrog kev sib khi lossis kev ua haujlwm tsis zoo ntawm lub raj -cov ntawv txuas.

Hom tsis ua haujlwm tseem ceeb tshaj plaws yog PTFE raj tawg. PTFE yog chemically robust, tsis tau nws yog mechanically rhiab heev rau kev nyuaj siab concentration thiab tej kab nrib pleb loj hlob tsis muaj pov thawj sab nrauv ceeb toom. Sai li sai tau raws li koj muaj ib qho kev cuam tshuam lub raj, kev sib cais ntawm cov kua hauv sab hauv yog ncaj qha thiab tswj tsis tau.

Kho thiab rov xaiv xaiv

Txoj kev kho yog nyob ntawm qhov chaw xau thiab siv zog.

Gasket leaks yog qhov yooj yim los kho, hloov lub gasket thiab rov-torque lub bolts kom raug raws li qhov tseeb thiab qhov tshwj xeeb. Ua tib zoo reassembly yog qhov tsim nyog vim qhov tsis sib xws nruj yog qhov tshwm sim hauv paus.

Tube-rau-tubesheet leaks yog kev kho tshwj xeeb dua. Muaj qee zaus kev ncaj ncees tuaj yeem rov qab los ntawm re-rolling lossis re- sealing tab sis qhov no xav tau kev paub thiab cov tshuab zoo. Yog tias qhov kev puas tsuaj loj heev, tsuas yog kev kho mob ntev ntev xwb - feem ntau yog los hloov cov pob.

Kev kho thaj chaw txwv tsis pub muaj rau cov hlab PTFE tawg. Lub raj me me ntsaws qee zaus koom nrog kev qhia txog PTFE plugs ntawm txhua qhov kawg ntawm ib lub raj cais. Qhov no txo ​​qis qhov chaw hloov hluav taws xob thiab yuav tsum tau siv tsuas yog thaum feem pua ​​me me ntawm cov hlab ntsha raug cuam tshuam. Feem ntau qhov kev xaiv zoo dua yog hloov cov pob yog tias ntau tshaj 5% ntawm cov hlab ntsha raug cuam tshuam.

Nws yog ib qho tseem ceeb los qhia txog qhov kev txwv tseem ceeb: PTFE hlab tsis tuaj yeem ntseeg tau los yog sib koom ua ke hauv thaj chaw. Txhua qhov kev sim los yog kho cov pob txha PTFE yuav ua tsis tiav nyob rau hauv thermal thiab tshuaj lom neeg kev nyuaj siab. Cov kev kho zoo li no yog ib ntus ntawm qhov zoo tshaj plaws thiab yuav tsum tsis txhob pom tias yog kev kho mob mus tas li.

Kaw Scene

Hla- leakage nyob rau hauv PTFE tshav kub exchanger tsis yog ib qho kev ua haujlwm tsis yooj yim; nws yog qhov kev puas tsuaj uas xav tau kev saib xyuas sai. Tsis quav ntsej qhov teeb meem txhais tau tias muaj kev phom sij ntau dua rau ib puag ncig, kev tsis ruaj khov, thiab cov khoom siv degradation.

Cov neeg ua haujlwm tam sim no tuaj yeem cais tawm cov khoom sib txawv, siv cov kev ntsuas siab tswj thiab ua tib zoo ntsuas cov qauv npuas lossis cov txiaj ntsig los ntawm kev tshawb pom helium kom pom qhov xau. Thaum xaiv txoj kev kho kom raug, txawm tias nws yog kev hloov gasket, lub foob rov qab los yog hloov pob, nws yuav tshwm sim.

Feem ntau qhov xwm txheej, qhov sib txawv ntawm qhov xwm txheej tsawg thiab kev cuam tshuam loj hauv lub cev yog qhov ua kom sai li sai tau thiab kuaj pom qhov xau. Tej yam yooj yim, tab sis kev cia siab tau, kev sim cov txheej txheem tau lees paub cov lus teb tam sim kom paub tseeb tias ob qho tib si txheej txheem kev nyab xeeb thiab ntev - cov khoom siv ruaj khov.