Phaj kub exchanger ntxiv rau cov xwm txheej tshwj xeeb ntawm kev saib xyuas, kuj yuav tsum tau saib xyuas tsis tu ncua. Vim lub phaj kub exchanger disassembly thiab installation yog ib qho yooj yim, yooj yim txij nkawm, thiab feem ntau tsis siv cov cuab yeej tshwj xeeb thiab khoom siv. Raws li cov xwm txheej sib txawv tuaj yeem siv ntau txoj hauv kev, yog tias cov cuab yeej tsis tshwm sim, tsuas yog cov cua sov hloov pauv K tau poob, nws tsis tuaj yeem muab cov khoom siv hluav taws xob tshem tawm, thiab lub kaw lus kaw kom tshem tawm cov kua rau hauv cov khoom siv tau. yuav circulated rau ob peb teev. Lub xaib tsis muaj cov xwm txheej zoo li no, thiab disassemble cov cuab yeej lossis pom tias qhov ntsuas tsis loj heev, yuav tsis tshem tawm ntawm lub phaj thiab dej ntws ncaj qha, thaum siv cov txhuam hniav tuaj yeem txhuam.
I. Ib txwm ua haujlwm thiab tu
① yuav tsum tau kho cov khoom siv, yuav tsum tau muab tso rau hauv qhov kev txiav txim rov qab kom disassemble lub tshav kub exchanger.
② Cov cuab yeej siv hauv kev lag luam roj av thiab tshuaj lom neeg yuav tsum tau tswj xyuas tsis tu ncua raws li kev saib xyuas lub voj voog.
③ cov khoom siv hauv nruab nrab yog tias nws yog nplaim taws, tawg lossis corrosive xov xwm, yuav tsum tau kho yam tsawg ib xyoos ib zaug.
④ phaj kub exchanger siv nyob rau hauv lwm yam lag luam, yog hais tias tsis muaj leakage tshwm sim, nws yog qhov zoo tshaj los kho ib zaug txhua peb xyoos.
Qhov thib ob, lub phaj ntxuav thiab kev tiv thaiv kom lub phaj huv si yog ib qho tseem ceeb ntawm cov txheej txheem kom muaj kev sib hloov ntawm cov cua kub siab. Nyob nruab nrab ntawm cov phiaj, qhov nruab nrab yog raws qhov nqaim zigzag ntws channel txav, txawm tias tiam ntawm cov txheej txheem tsawg dua, kuj tseem yuav ua rau muaj kev hloov pauv hauv cov dej ntws, cuam tshuam rau cov dej txav, kom lub siab poob siab, qhov kub thiab txias. Hloov cov coefficient txo qis, piv txwv li, cov nroj tsuag qab zib hauv kev siv cov phaj kub hloov pauv hauv cov cua sov, vim tias cov dej theem nrab tsis zoo, kev siv ob lub hlis nkaus xwb hauv cov txheej txheem ntawm kev thaiv cov ndlwg channel, tsis tuaj yeem khiav mus ntxiv. .
1, tshuaj ntxuav txoj kev no yog ib qho tshuaj tov los ntawm lub tshav kub exchanger, kom lub phaj saum npoo av yaj, tawm. Txoj kev no tsis tas yuav tsum tau disassembly ntawm lub tshav kub exchanger, simplifying lub tu txheej txheem, tab sis kuj yuav txo tau cov degree ntawm tu lub zog. Raws li cov phaj corrugation tuaj yeem txhawb kev tu cov kua dej turbulence, conducive rau lub dissolution ntawm scale txheej, yog li cov tshuaj ntxuav txoj kev yog ib tug zoo tagnrho txoj kev.
2, txhua yam (lub cev) tu txoj kev no yog daim ntawv phaj tom qab phau ntawv txhuam nrog txhuam, thiaj li ua tiav lub hom phiaj ntawm kev tshem tawm cov phaj phaj saum npoo av. Txawm hais tias txoj kev no yog ncaj qha, tab sis qhov nyuaj, tuab txheej ntawm av, tsis yooj yim los ntxuav.
3, kev tu cov txheej txheem rau cov av txheej yog nyuaj thiab tuab, tsuas yog siv ib qho ntawm cov txheej txheem saum toj no nyuaj los ntxuav. Cov txheej txheem dav dav yog thawj cov tshuaj ntxuav cov txheej txheem kom soften lub nplai txheej, thiab tom qab ntawd kho tshuab (lub cev) txoj kev ntxuav kom tshem tawm cov nplai txheej, txhawm rau kom cov phaj huv si.
4, Ceev faj thaum ntxuav
① tshuaj ntxuav tu kom tswj tau ib qho kev khiav dej num, feem ntau 0.8 ~ 1.2m / s. Nws lub hom phiaj yog kom nce qib ntawm kev kub ntxhov hauv kev daws teeb meem.
② Rau cov av sib txawv yuav tsum siv cov tshuaj ntxuav tu sib txawv. Ntxiv rau qhov feem ntau siv dilute soda tshauv tov, rau nplai muaj 5 feem pua nitric acid tov. Nyob rau hauv cov dej qab zib tshauv tsim los ntawm lub teev, muaj 5 feem pua hydrochloric acid tov. Tab sis yuav tsum tsis txhob siv cov tshuaj detergent uas ua rau corrosion ntawm lub phaj.
③ kev tu txhua yam (lub cev) tsis tso cai rau kev siv cov pa roj carbon txhuam txhuam los ntxuav cov ntawv hlau stainless, kom tsis txhob ua kom lub zog ntawm cov phaj. Tib lub sijhawm tsis tuaj yeem ua rau lub phaj nto khawb, deformation, thiab lwm yam.
④ Lub phaj ntxuav yuav tsum tau muab yaug nrog dej thiab qhuav, thiab lub phaj yuav tsum muab tso kom tsis txhob deformation.
Thib peb, cov yam ntxwv ntawm gasket thiab nws qhov kev hloov pauv vim qhov nthuav dav ntawm daim ntawv thov ntawm cov phaj kub exchangers, rau cov xov xwm sib txawv thiab cov txheej txheem muaj qhov sib txawv ntawm qhov kub, siab thiab corrosion kuj. Xav siv lub tswb "universal" gasket kom hloov mus rau txhua kis, nws yog qhov tsis yooj yim sua, tab sis yuav tsum tau siv rau cov ntaub ntawv sib txawv ntawm cov khoom sib txawv. Feem ntau gasket cross-sectional zoo yog hexagonal. Cov hom gaskets feem ntau yog cov roj hmab ntuj, neoprene, EPDM, silicone roj hmab, fluoroelastomer, asbestos fiber board, thiab lwm yam. Phaj heat exchanger gasket siv yog to, tawg, laus thiab lwm yam tshwm sim, yuav tsum tau hloov raws sij hawm. Kev hloov pauv yuav tsum tau ua raws li hauv qab no. ① Tshem tawm cov gasket siv. Nco ntsoov tias thaum dismantling, tsis txhob ua rau lub gasket zawj nrog khawb.
② Siv acetone, butanone lossis lwm cov kuab tshuaj ketone kom tshem tawm cov kua nplaum uas nyob hauv lub qhov gasket.
③ Ntxuav lub qhov gasket thiab gasket nrog cov ntaub huv los yog paj rwb sassafras.
④ Siv cov nplaum sib npaug rau hauv qhov zawj gasket.
⑤ Muab lub gasket tshiab huv si rau ntawm lub rooj tsavxwm.
⑥ Muab lub rooj tsavxwm gasketed rau hauv qhov chaw tiaj tus, txias thiab qhov cua kom qhuav ib txwm ua ntej txhim kho thiab siv.
