Nyob rau hauv xyoo tas los no, polytetrafluoroethylene (Teflon) yog ib hom tshuaj tiv thaiv fouling thiab anti fouling rau lub zog hluav taws xob thiab kev lag luam petrochemical. Txawm li cas los xij, cov teeb meem hauv qab no yuav tsum tau them sai sai rau thaum lubPTFE txheejcov yeeb nkabkab yog welded, txwv tsis pub lub neej kev pabcuam thiab kev nyab xeeb ntawm PTFE lined pipeline yuav raug cuam tshuam.
1. Thaum ntxuav lub khoom sib dhos, txwv tsis pub ua puas rau cov hlau puag. Txwv tsis pub ntaus arc rau ntawm cov hlau puag thaum vuam.
2. Hauv qhov fillet ntawm fillet weld, qhov siab ntawm fillet weld yuav tsum ntau dua 5 hli, lub kaum sab xis yuav tsum ntau dua lossis sib npaug rau 3 hli, thiab lub kaum sab hauv yuav tsum ntau dua lossis sib npaug rau 10 hli.
3. Thaum vuam lub plhaub ntawm PTFE kab yeeb nkab, nws yog qhov zoo dua los siv txoj kev vuam ntawm ob sab butt vuam. Qhov no xav tau qib kev txawj ntse ntawm peb cov neeg ua haujlwm, qhov vuam yuav tsum tiaj tus (du lossis du hloov pauv), tsis muaj qhov hws, vuam seam thiab slag suav nrog qhov tshwm sim, thiab qhov siab ntawm qhov vuam yuav tsum tsis pub ntau tshaj 2 hli. Tom qab vuam, cov spatter tshwm sim los ntawm kev vuam yuav tsum raug tshem tawm tag nrho.
4. Yuav tsum siv txoj kev vuam txuas ntxiv mus rau hauv txoj kev vuam ntawm PTFE lined yeeb nkab, thiab qhov vuam seam yuav tsum tsis muaj kab nrib pleb lossis kev txiav txuas ntxiv mus.PTFE braided hose, PTFE convoluted hose
Polytetrafluoroethylene (PTFE) yog ib lub npe siv ntau ntawm polytetrafluoroethylene. PTFE hose siv rau hauv stainless hlau hose, yog li lub neej ua haujlwm ntawm hose ntev dua li roj hmab hose lossis roj hmab hose qhwv hauv stainless hlau. Nws muaj ntau yam zoo dua li cov khoom roj hmab.
Chav Kawm I: PTFE kab ncaj yeeb nkab thiab cov yeeb nkab fittings
Feem ntau hu ua cov yeeb nkab uas muaj cov kab xoob. Hauv cov txheej txheem no, PTFE siv los tig lub bar. Nws yog qhov tsim nyog rau cov kav dej thauj mus los uas muaj qhov siab ib txwm thiab qhov siab zoo (xws li peb lub kav dej kho cov khib nyiab, thiab lwm yam), thiab yuav tsum tsis txhob siv rau cov kav dej uas muaj qhov hnyav (xws li qhov nkag thiab qhov tawm ntawm lub twj tso kua mis thiab cov kav dej uas tuaj yeem tsim qhov siab tsis zoo los ntawm kev poob lossis txias tam sim ntawd).
Txoj kab uas hla: dn25-500mm
Kev pab kub: - 40-180oc
Kev pabcuam siab: 1.6Mpa
Chav Kawm II: PTFE nruj kab ncaj yeeb nkab thiab cov yeeb nkab fittings
Nws feem ntau hu ua cov yeeb nkab nruj nreem qhwv nrog hlau xaim.
Cov txheej txheem tsim khoom: ua ntej, ntau txheej ntawm PTFE zaj duab xis raug qhwv rau ntawm pwm, tom qab ntawd cov hlau hlau (Ø 0.5-1 hli) raug qhwv rau ntawm PTFE zaj duab xis, thiab tom qab ntawd ntau txheej ntawm PTFE zaj duab xis nyias raug qhwv rau sab nraud ntawm cov hlau hlau, thiab thaum kawg qhwv rau hauv lub cub tawg rau kev tsim. Phab ntsa sab hauv ntawm PTFE kab yeeb nkab ua los ntawm cov txheej txheem no yog du, thiab phab ntsa sab nraud yog kauv corrugated vim qhov ntim thiab lub zog elastic ntawm hlau hlau.
Qhov chaw nruab nrab ntawm phab ntsa sab nraud ntawm PTFE kab yeeb nkab thiab phab ntsa sab hauv ntawm cov yeeb nkab hlau yog puv nrog cov roj hmab (tsis muaj cua seem). Cov roj hmab sau tuaj yeem sib txuas nrog cov yeeb nkab hlau. Tib lub sijhawm, nws tuaj yeem qhwv nruj rau ntawm phab ntsa sab nraud ntawm PTFE kab yeeb nkab. Tom qab cov roj hmab sau kho, cov roj hmab sib xyaw ua ke uas raug kaw nrog phab ntsa sab nraud ntawm kab yeeb nkab. Cov qauv no zoo ib yam li kev sib xyaw ua ke ntawm txiv ntoo thiab ntsia hlau. Ntawm ib sab tes, nws tuaj yeem txwv thiab them rau qhov nthuav dav thermal thiab kev cog lus txias ntawm PTFE kab yeeb nkab; ntawm qhov tod tes, qhov tawv ntawm cov hlau hlau tuaj yeem txhim kho qhov tsis kam ntawm PTFE kab yeeb nkab.
Txoj kab uas hla: dn25-200 hli
Kub ua haujlwm: - 50-180oc
Ua haujlwm siab: 0.5-1.6mpa
Hom thib peb: PTFE thawb (nias) yeeb nkab nruj nreem nrog cov yeeb nkab ncaj
Feem ntau hu ua yeeb nkab ncaj uas muaj hlua nias (nias), nws tau siv dav hauv cov teb chaws tsim kho hauv xyoo 1990.
Cov txheej txheem tsim khoom: ua ntej, cov hmoov PTFE uas xa tuaj siv los thawb (extrude) lub yeeb nkab, thiab tom qab ntawd nws raug yuam rau hauv cov yeeb nkab hlau tsis sib xws (lub cheeb sab nraud ntawm lub liner yog me ntsis loj dua li lub cheeb sab hauv ntawm cov yeeb nkab hlau los ntawm 1.5-2 hli) los tsim ib daim ntaub tsis sib xws. Txhawm rau tshem tawm qhov siab, nws raug muab tso rau hauv lub cub tawg thiab cua sov rau 180oC rau kev kho qhov kub tas li, yog li nws tuaj yeem siv rau qhov kub hauv qab 180oC. Tib lub sijhawm, thawb (nias) lub ncej ntawm lub yeeb nkab.
Lub zog tensile zoo dua li ntawm lub raj xa dej. Lub raj xa dej muaj kev tiv taus zoo rau qhov siab zoo thiab tsis zoo.
Qhov sib txawv ntawm PTFE lining thiab roj hmab lining
Cov txheej tetrafluoroethylene yog siv cov tshuaj fluorine uas tiv taus xeb, tiv taus kub, tiv taus kua qaub thiab alkali, nplaum zoo heev, siv tau ntev thiab tiv taus nkag mus tau zoo. Tag nrho cov tshuaj tetrafluoroethylene yog ib txoj haujlwm siv thev naus laus zis siab, nws cov txheej txheem yog dab tsi? 1. Ua ntej tshuaj tsuag, qhov chaw yuav tsum tau xuab zeb thiab roughened, thiab ib txheej ntawm cov primer tshwj xeeb raug tsuag. 2. Tom qab ntawd cov hmoov fluoroplastic raug them los ntawm cov khoom siv hluav taws xob siab, thiab nqus tau sib npaug ntawm qhov chaw ua haujlwm hauv qab kev ua haujlwm ntawm lub zog hluav taws xob. 3. Tom qab ci kub siab, cov khoom clinker yuav yaj mus rau hauv ib txheej tiv thaiv ntom ntom, uas tau txuas ruaj khov rau ntawm qhov chaw ua haujlwm. Piv txwv li, ib zaj duab xis txheej tuab 1 hli kuj yuav tsum tau tsuag thiab ci dua 5-6 zaug. Feem ntau, qhov tuab tshaj plaws tuaj yeem tsuag mus txog 2 hli. PTFE txheej yog ib txoj kev siv dav dav tam sim no. Nws siv tag nrho cov tshuaj fluorine uas tiv taus xeb, ua kom huv si, tsis nplaum, tsis ntub, tiv taus hnav, tiv taus kub thiab txias, rwb thaiv tsev, thiab lwm yam hauv cov txheej txheem tsim kho, nws lub zog thiab tam sim no raug kho tas li rau lub xeev zoo tagnrho kom ua tiav cov txheej txheem txheej. Cov roj hmab hauv pem teb kuj hu ua cov roj hmab hauv pem teb. Nws yog los lo cov roj hmab ua tiav rau ntawm qhov chaw hlau nrog cov nplaum kom cais cov khoom nruab nrab corrosive ntawm cov hlau matrix rau lub hom phiaj ntawm kev tiv thaiv. Cov roj hmab ntuj thiab cov roj hmab hluavtaws siv rau hauv pem teb. Feem ntau ntawm cov roj hmab siv hauv cov khoom siv tshuaj lom neeg hauv pem teb yog cov roj hmab ntuj. Cov khoom tseem ceeb ntawm cov roj hmab ntuj yog cis polymer ntawm isoprene, uas yog vulcanized los ntawm kev ntxiv sulfur. Cov roj hmab vulcanized muaj qee qhov tiv taus kub thiab lub zog kho tshuab. Nws tuaj yeem faib ua cov roj hmab mos, cov roj hmab semi-hard thiab cov roj hmab tawv peb hom. Cov roj hmab tawv muaj kev tiv taus corrosion zoo, tiv taus laus thiab muaj zog sib txuas nrog hlau. Cov roj hmab mos muaj kev tiv taus txias zoo, tiv taus kub thiab cuam tshuam, thiab muaj qee qhov elasticity; cov roj hmab semi-hard yog nruab nrab ntawm ob. Ntxiv rau cov tshuaj oxidants muaj zog thiab qee cov kuab tshuaj, cov roj hmab tawv tuaj yeem tiv taus qhov xeb ntawm feem ntau cov inorganic acids, organic acids, alkalis, ntsev thiab cawv. Yog li ntawd, cov roj hmab tawv yog siv ua cov khoom siv tiv thaiv xeb tseem ceeb uas tsis yog hlau. Cov roj hmab vulcanized tuaj yeem muab faib ua cov roj hmab ua ntej vulcanized, cov roj hmab kub siab ib txwm vulcanized thiab cov roj hmab ntuj vulcanized. Cov roj hmab ua ntej vulcanized yog siv rau hauv cov khoom siv pickling loj.
Cov kev tshawb nrhiav ntsig txog ptfe hose:
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-10-2020