Cov txheej txheem ntawm Kev Txuas Cov Hluav Taws Xob Hluav Taws Xob Cov Hluav Taws Xob thiab Cov Tube Sheets hauv Plhaub Thiab Tube Thaum tshav kub kub Exchangers

Cov khoom siv hluav taws xob hloov hluav taws xob ua hluav taws xob hloov hluav taws xob hloov pauv ib feem ntawm cov cua kub ntawm cov kua dej kub ntawm cov ntaub ntawv mus rau cov kua dej txias, muaj ntau yam kev siv hauv tib neeg lub neej txhua hnub thiab roj av, tshuaj, hluav taws xob, tshuaj, atomic zog thiab nuclear industries. Nws tuaj yeem siv los ua cov khoom siv ywj pheej, xws li cov cua sov, condensers, coolers, thiab lwm yam; nws tseem tuaj yeem siv los ua ib feem ntawm qee cov txheej txheem khoom siv, xws li cov khoom siv hluav taws xob sib hloov hauv qee cov khoom siv tshuaj.
Tshwj xeeb tshaj yog nyob rau hauv chemical kev lag luam nrog ib tug loj npaum li cas ntawm lub zog noj, tshav kub exchanger nyob rau hauv lub chemical zus tau tej cov tshav kub pauv thiab hloov cov txheej txheem yog indispensable khoom nyob rau hauv tag nrho cov tshuaj ntau lawm cov cuab yeej kuj occupies ib tug ntau npaum li cas.
Thaum tshav kub kub exchanger los ntawm nws txoj haujlwm, ntawm ib sab, los xyuas kom meej tias cov txheej txheem kev lag luam ntawm qhov nruab nrab xav tau los ntawm qhov kub thiab txias, ntawm qhov tod tes, kuj yog los txhim kho lub zog siv tus nqi ntawm cov khoom tseem ceeb. Raws li nws cov qauv txheej txheem ntawm phaj kub exchanger, ntab taub hau hom kub exchanger, tsau raj phaj kub exchanger thiab U-shaped raj kub exchanger thiab hais txog. Ntxiv rau lub phaj kub exchanger, cov khoom seem yog lub plhaub thiab lub raj kub exchanger.
Vim lub plhaub thiab lub raj cua kub exchanger muaj qhov loj dua tshav kub hloov mus rau ib chav tsev ntim, thiab cov nyhuv hloov hluav taws xob yog qhov zoo, tib lub sij hawm muaj cov qauv ruaj khov, yoog raws, cov txheej txheem tsim khoom thiab lwm yam zoo, tau dhau los ua kev siv ntau tshaj plaws. ib txwm kub exchanger.
Plhaub thiab raj kub exchanger nyob rau hauv lub tshav kub exchanger raj thiab raj phaj kev twb kev txuas
Nyob rau hauv lub plhaub thiab lub raj kub exchanger tshav kub exchanger tube thiab raj phaj yog lub tsuas barrier ntawm lub tshav kub exchanger tube chav kawm thiab plhaub chav kawm, tshav kub exchanger raj thiab raj phaj kev twb kev txuas ntawm cov qauv thiab zoo ntawm kev sib txuas txiav txim qhov zoo ntawm lub tshav kub exchanger thiab kev pab cuam lub neej, yog lub tshav kub exchanger manufacturing txheej txheem yog ib qho tseem ceeb txuas.
Feem ntau ntawm kev puas tsuaj ntawm cov khoom siv hluav taws xob thiab tsis ua haujlwm tshwm sim nyob rau hauv lub tshav kub exchanger tube thiab lub raj phaj txuas qhov chaw, qhov zoo ntawm nws cov kev sib txuas cov pob qij txha kuj ncaj qha cuam tshuam rau kev nyab xeeb thiab kev ntseeg siab ntawm cov khoom siv tshuaj thiab kev teeb tsa, yog li rau lub plhaub thiab lub raj kub exchanger heat exchanger tube. thiab tube phaj kev sib txuas txheej txheem tau dhau los ua cov khoom siv hluav taws xob hloov hluav taws xob tsim kev ruaj ntseg zoo nyob rau hauv qhov tseem ceeb tshaj plaws kev sib txuas. Tam sim no, nyob rau hauv lub tshav kub exchanger manufacturing txheej txheem, lub tshav kub exchanger raj thiab raj phaj kev twb kev txuas yog mas: vuam, expansion, expansion thiab vuam thiab gluing thiab expansion thiab lwm txoj kev.

1. Vuam
Thaum tshav kub kub exchanger raj thiab lub raj phaj vuam kev twb kev txuas, vim qhov qis dua cov kev cai rau lub raj phaj, cov txheej txheem tsim yog yooj yim, muaj kev sib khi zoo dua, thiab vuam, kev soj ntsuam xyuas, kev saib xyuas yog yooj yim heev, yog tam sim no lub plhaub thiab lub raj kub exchanger. Thaum tshav kub kub exchanger raj thiab raj phaj kev twb kev txuas ntawm feem ntau lug siv txoj kev sib txuas. Nyob rau hauv kev siv cov kev sib txuas welded, yuav tsum xyuas kom meej lub sealing ntawm cov welded pob qij txha thiab tensile lub zog ntawm lub zog ntawm lub vuam thiab xyuas kom meej lub sealing ntawm lub tshav kub exchanger raj thiab raj phaj kev twb kev txuas sealing weld. Rau lub zog ntawm weld kev ua tau zoo txwv, tsuas yog rau kev co ntawm cov me me thiab tsis muaj clearance corrosion zaus.
Welded kev twb kev txuas, qhov kev ncua deb ntawm lub tshav kub exchanger raj tsis tuaj yeem nyob ze heev, txwv tsis pub cuam tshuam los ntawm tshav kub, weld zoo tsis yooj yim los xyuas kom meej, thaum lub yeeb nkab kawg yuav tsum tau sab laug ib tug tej yam kev ncua deb, thiaj li yuav pab tau txo cov vuam kev nyuaj siab ntawm. ib leeg. Qhov ntev ntawm lub tshav kub exchanger raj txuas tawm ntawm lub raj phaj yuav tsum ua kom tau raws li qhov yuav tsum tau ua kom paub meej tias nws muaj peev xwm ua tau zoo. Nyob rau hauv txoj kev welding, raws li cov khoom siv ntawm lub tshav kub exchanger yeeb nkab thiab raj phaj tuaj yeem welded los ntawm vuam pas nrig arc vuam, TIG vuam, CO2 vuam thiab lwm yam. Rau tshav kub exchanger yeeb nkab thiab raj phaj kev twb kev txuas ntawm lub siab xav tau ntawm lub tshav kub exchanger, xws li tsim siab, siab tsim kub, kub hloov, raws li tau zoo raws li alternating load heat exchanger, nyias tube thiab phaj kub exchanger, thiab lwm yam. siv TIG welding.
Cov txheej txheem kev sib txuas ntawm cov pa, vim tias muaj qhov sib txawv ntawm lub raj thiab lub phaj phaj qhov, nws tuaj yeem cuam tshuam rau kev cuam tshuam corrosion thiab overheating, thiab thermal stresses generated ntawm cov welded pob qij txha kuj yuav ua rau muaj kev ntxhov siab corrosion thiab puas, tag nrho cov uas yuav ua rau lub welding. Thaum tshav kub kub exchanger tsis ua hauj lwm. Tam sim no, nyob rau hauv lub domestic nuclear kev lag luam, hluav taws xob kev lag luam thiab lwm yam industries siv tshav kub exchanger, tshav kub exchanger raj thiab raj phaj kev twb kev txuas tau pib siv lub bore welding tshuab, no kev twb kev txuas txoj kev yuav tshav kub exchanger raj thiab raj phaj kawg ntawm lub vuam mus rau. lub raj pob bore welding, siv tag nrho cov ntaub ntawv nkag mus, tshem tawm qhov kawg ntawm qhov sib txawv weld, txhim kho cov kev tiv thaiv corrosion ntawm clearance corrosion thiab tiv thaiv corrosion muaj peev xwm. Nws lub zog tiv thaiv kev vibration qaug zog yog siab, tuaj yeem tiv taus qhov kub thiab txias, thiab cov khoom siv ntawm cov pob qij txha welded zoo dua; Cov pob qij txha tuaj yeem yog qhov tsis muaj kev puas tsuaj rau sab hauv, thiab qhov zoo ntawm qhov vuam tuaj yeem tswj tau, uas txhim kho kev ntseeg tau ntawm cov vuam. Txawm li cas los xij, lub puab qhov vuam tshuab sib dhos yog qhov nyuaj dua, kev xav tau siab rau vuam tshuab, kev tsim khoom thiab kev soj ntsuam tsis yooj yim, thiab cov nqi tsim khoom kuj tseem ceeb. Nrog rau lub tshav kub exchanger mus rau qhov kub thiab txias, kev kub siab thiab loj-scale kev loj hlob, nws cov kev tsim zoo yuav tsum tau siab dua thiab siab dua, bore welding tshuab yuav siv dav dua.

2. Kev nthuav dav
Kev nthuav dav yog ib qho kev sib txawv ntawm cov khoom siv hluav taws xob thiab cov raj phaj sib txuas, kev siv cov cuab yeej nthuav dav los ua kom lub raj phaj thiab lub raj elastic-yas deformation thiab kaw haum, tsim cov khoom sib txuas, kom ua tiav ob qho tib si sealing thiab tiv thaiv kom rub tawm lub hom phiaj. Hauv kev tsim cov txheej txheem ntawm cov khoom siv hluav taws xob, kev nthuav dav yog tsim rau tsis muaj kev vibration loj, tsis muaj qhov kub thiab txias hloov, tsis muaj kev ntxhov siab loj heev.
Tam sim no siv cov txheej txheem nthuav dav feem ntau yog cov tshuab dov expansion thiab hydraulic expansion. Mechanical dov expansion expansion tsis zoo ib yam, ib zaug lub raj thiab raj phaj kev twb kev txuas tsis ua hauj lwm thiab ces siv lub expansion raj los kho yog heev nyuaj; kev siv lub hnab ua kua hydraulic expansion los ntawm lub computer-tswj kev ua haujlwm, siab precision, thiab tuaj yeem ua kom ntseeg tau tias qhov kev nthuav dav ntawm qhov nruj ntawm cov degree ntawm uniformity, kev sib txuas thiab kev ntseeg siab tshaj qhov kev nthuav dav ntawm kev siv tshuab zoo. Txawm li cas los xij, kev ua tiav qhov yuav tsum tau ua nruj me ntsis, kom ntseeg tau tias kev ua tiav ntawm kev nthuav dav ntawm cov pob qij txha ntom ntom kuj muaj qee qhov nyuaj, yog tias qhov tsis ua tiav ntawm kev kho qhov nthuav dav kuj nyuaj dua.
3. Kev nthuav dav thiab vuam
Thaum qhov kub thiab txias yog siab, thiab nyob rau hauv lub thermal deformation, thermal poob siab, thermal corrosion thiab kua siab, lub tshav kub exchanger raj thiab raj phaj kev twb kev txuas yog yooj yim heev rau puas, siv expansion los yog vuam yog ib qho nyuaj los xyuas kom meej tias cov kev twb kev txuas lub zog. thiab cov kev cai sealing. Tam sim no dav siv yog txoj kev nthuav dav thiab vuam txoj kev. Kev nthuav dav thiab vuam qauv tuaj yeem ua kom zoo rau cov nqaj kev co puas tsuaj rau cov vuam, tuaj yeem tshem tawm kev ntxhov siab corrosion thiab crevice corrosion, txhim kho kev qaug zog ntawm kev sib koom tes. Qhov no txhim kho lub neej kev pab cuam ntawm lub tshav kub exchanger, thiab muaj zog dua thiab sealing dua yooj yim expansion los yog lub zog vuam. Rau cov khoom siv hluav taws xob zoo tib yam feem ntau yog siv rau hauv daim ntawv "sticking expansion % zog vuam"; thaum siv cov kev mob hnyav ntawm cov khoom siv hluav taws xob sib txawv yuav tsum tau siv "lub zog nthuav dav % sealing vuam" daim ntawv. Kev nthuav dav thiab vuam raws li kev nthuav dav thiab vuam hauv cov txheej txheem kev txiav txim tuaj yeem muab faib ua thawj qhov nthuav dav tom qab vuam thiab vuam tom qab thawj qhov nthuav dav ntawm ob hom.
(1) thawj qhov kev nthuav dav tom qab vuam nthuav dav ntawm cov roj lubricating siv yuav nkag mus rau hauv qhov sib koom ua ke, thiab lawv muaj lub zog rhiab heev rau cov kab nrib pleb, porosity, thiab lwm yam, yog li ua rau qhov tshwm sim ntawm qhov tsis xws luag hauv vuam ntau dua. Cov kev nkag mus rau hauv qhov sib txawv ntawm cov roj yog qhov nyuaj rau kev tshem tawm kom huv, yog li thawj qhov kev nthuav dav tom qab vuam txheej txheem, yuav tsum tsis txhob siv rau hauv txoj kev ntawm kev nthuav dav. Kev siv cov tshuaj nplaum nthuav tawm tsis yog lub siab-tiv taus, tab sis tuaj yeem tshem tawm qhov sib txawv ntawm lub raj thiab lub raj phaj raj qhov, yog li nws tuaj yeem ua kom zoo dampen lub raj ntim kev co mus rau qhov sib txuas ntawm lub raj lub qhov ncauj.
Txawm li cas los xij, kev siv cov lus qhia los yog kev tswj hwm ntawm txoj kev nthuav dav tsis tuaj yeem ua tiav cov kev xav tau nthuav dav, thiab kev siv lub khoos phis tawj tswj kev nthuav dav los ntawm cov kua hnab ntim cov txheej txheem tuaj yeem yooj yim thiab sib xws kom ua tiav cov kev xav tau nthuav dav. Nyob rau hauv vuam, vim muaj kev cuam tshuam ntawm high-temperature molten hlau, qhov sib txawv ntawm cov pa roj yog rhuab thiab nthuav dav, cov gases nrog kub thiab siab siab nyob rau hauv lub to ntawm lub zog ntawm expansion ntawm sealing kev ua tau zoo yuav ua rau ib co kev puas tsuaj.
(2) thawj weld thiab tom qab ntawd nthuav dav rau thawj weld thiab tom qab ntawd nthuav cov txheej txheem, qhov teeb meem tseem ceeb yog los tswj qhov tseeb ntawm lub raj thiab lub raj phaj lub qhov thiab nws cov kev sib koom ua ke. Thaum qhov sib txawv ntawm lub raj thiab lub raj phaj qhov yog me me rau ib qho nqi, cov txheej txheem nthuav dav yuav tsis ua rau qhov zoo ntawm qhov sib koom ua ke. Tab sis lub peev xwm ntawm lub vuam qhib los tiv thaiv shear quab yuam yog qhov tsis zoo, yog li lub zog vuam, yog tias qhov kev tswj tsis tau raws li qhov yuav tsum tau ua, nws yuav ua rau tsis ua haujlwm dhau los lossis nthuav kev puas tsuaj rau qhov sib koom ua ke.
Nyob rau hauv cov txheej txheem tsim, muaj qhov sib txawv loj ntawm sab nraud ntawm lub tshav kub exchanger raj thiab lub raj phaj raj lub qhov, thiab sab nraud txoj kab uas hla ntawm txhua lub tshav kub exchanger raj thiab lub raj phaj raj lub qhov sib txawv raws lub axial kev taw qhia yog tsis sib xws. Thaum lub weld tiav lawm expansion, lub raj centerline yuav tsum coincide nrog lub centerline ntawm lub raj phaj lub qhov los xyuas kom meej qhov zoo ntawm kev sib koom tes, yog hais tias qhov sib txawv loj, vim lub rigidity ntawm lub raj, ntau expansion deformation yuav ua rau kev puas tsuaj rau lub welding. welded pob qij txha, los yog txawm ua rau cov pob qij txha yuav desoldered.
4. Glue plus expansion joint
Gluing thiab nthuav cov txheej txheem los pab daws qhov kub exchanger tube thiab raj phaj nyob rau hauv lub tshav kub exchanger kev twb kev txuas feem ntau to thiab to, nws yog ib qho tseem ceeb uas yuav tsum tau glued raws li kev ua hauj lwm tej yam kev mob ntawm txoj kev xaiv ntawm gluing neeg sawv cev. Nyob rau hauv tus txheej txheem ntawm kev siv cov txheej txheem yuav tsum tau ua ke nrog cov qauv thiab qhov loj ntawm lub tshav kub exchanger xaiv ib tug zoo txheej txheem tsis, xws li curing siab, curing kub, expansion quab yuam, thiab lwm yam, thiab nyob rau hauv cov txheej txheem ntau lawm yog nruj me ntsis tswj. Cov txheej txheem no yog qhov yooj yim, yooj yim rau kev siv, txhim khu kev qha, hauv kev siv tiag tiag ntawm kev lag luam tau lees paub, muaj txiaj ntsig ntawm kev nce qib.
(1) nyob rau hauv lub plhaub thiab lub raj kub exchanger tshav kub exchanger raj thiab raj phaj kev twb kev txuas txoj kev, ib leeg siv cov pa welding los yog expansion yog ib qho nyuaj los xyuas kom meej tias cov kev twb kev txuas lub zog thiab cov kev cai ntawm lub sealing.
(2) Kev nthuav dav thiab vuam txoj kev yog qhov tsim nyog los xyuas kom meej lub zog thiab kev sib khi ntawm kev sib txuas ntawm cov khoom siv hluav taws xob thiab cov phaj phaj, thiab txhim kho lub neej kev pab cuam ntawm lub tshav kub exchanger.
(3) Cov txheej txheem ntawm gluing thiab nthuav dav pab daws cov teeb meem ntawm cov dej xau thiab cov dej ntws tawm thaum txuas lub tshav kub exchanger raj thiab raj phaj, thiab cov txheej txheem yog yooj yim, yooj yim thiab txhim khu kev qha.
(4) Raws li kev nkag mus rau vuam txoj kev, lub hauv qhov vuam tshuab muaj kev tiv thaiv zoo rau interstitial corrosion thiab kev nyuaj siab corrosion, kev co qaug zog thiab txhua yam khoom ntawm welded pob qij txha; Qhov zoo ntawm cov welded pob qij txha tuaj yeem tswj tau, uas txhim kho kev ntseeg tau ntawm cov pob qij txha welded, thiab nws yog qhov tsim nyog rau kev nyiam thiab siv hauv cov khoom siv high-end hauv thawj qhov chaw.