1 Txoj Cai Xaiv
1.1 Kev xaiv ntawm kev sib khi ua ke raws li cov yam ntxwv nruab nrab
Rau cov uas tsis yog -corrosive los yog tsis muaj zog corrosive huv si xws li dej, huab cua thiab cov ntxhia roj, mos- kaw npauj npaim li qub nrog cov roj hmab hauv ob sab phlu (xws li, NBR Tsawg dua lossis sib npaug li 90 degree, EPDM Tsawg dua lossis sib npaug rau 120 degree) lossis PTFE (Less dua lossis sib npaug rau 220℃lossis sib npaug li 230 degree, sib npaug li 220℃lossis sib npaug li 230 degree, tsawg dua lossis sib npaug rau 230 degree. ) tuaj yeem raug saws, featuring zoo heev sealing kev ua tau zoo thiab tus nqi nruab nrab.
Rau siab- qhov kub thiab txias (Ntau dua lossis sib npaug li 250 degree), roj kub lossis cov tshuaj lom neeg muaj zog heev (xws li, acid-cov tshuaj tiv thaiv, muaj zog oxidants), hlau- kaw npauj npaim li qub yuav tsum raug xaiv. Stellite alloy, Hastelloy thiab lwm yam hnav-resistant thiab corrosion-resistant hard alloy sealing nto yog nyiam. Lus Cim: Cam khwb cia hlau (WCB) valve lub cev yog kub resistant mus txog 425 degree; alloy steel (xws li WC6, WC9, CF8C) valve lub cev txuam nrog hlau foob tuaj yeem ua tau raws li kev ua haujlwm txog 600 degree, thaum Inconel thiab lwm yam npib tsib xee{17}}raws li alloys ua ke nrog tshwj xeeb graphite seals yuav tsum siab tshaj 600℃.
Rau kev tshaj tawm uas muaj cov khoom siv thiab cov fibers (piv txwv li, dej phwj tuaj, pulp, ore slurry), eccentric qauv (ob -eccentric los yog triple-} eccentric) npauj npaim li qub yog nyiam kom tsis txhob muaj qhov sib tsoo los yog khawb ntawm qhov chaw sib khi, nrog hnav - tiv taus sealing khub.
1.2 Xaiv cov khoom siv lub cev valve raws li qhov siab thiab qhov kub thiab txias
Qhov kub thiab txias tsis tshua muaj siab (tsawg dua lossis sib npaug ntawm 1.6MPa, Tsawg dua lossis sib npaug li 80 degree): Grey cam khwb cia hlau (HT200) lossis cov hlau nplaum (QT450-10), muaj feem xyuam rau cov dej xa dej / cov kav dej thiab cov kav dej tsis zoo.
Qhov nruab nrab kub thiab nruab nrab siab (tsawg dua los yog sib npaug rau 4.0MPa, Tsawg dua los yog sib npaug rau 250 degree): Cam khwb cia hlau (WCB) los yog stainless hlau (304/316L), thiab compatibility ntawm cov ntaub ntawv hauv ob sab phlu (PTFE, roj hmab hauv ob sab phlu) nrog xov xwm yuav tsum tau paub tseeb.
High pressure (>4.0MPa) with nominal diameter ≥DN150: Double-eccentric or triple-eccentric butterfly valves are recommended. Note: When nominal diameter >DN400 and pressure >4.0MPa, lub sealing kev ntseeg siab ntawm npauj npaim li qub yog qis dua li ntawm lub rooj vag li qub los yog pob li qub, thiab kev ntsuam xyuas yuav tsum tau ua.
Muab ob npaug rau-eccentric / triple- cov qauv eccentric yog nyiam rau nquag siv rau -tawm cov kev pabcuam, nrog rau me me sealing nto hnav thiab ua haujlwm tsis tshua muaj zog.
1.3 Kev xaiv cov qauv raws li cov kev xav tau ntawm kev khiav dej num
On-Off kev pabcuam nkaus xwb: Concentric npauj npaim li qub yog txaus, nrog tus nqi qis thiab kev teeb tsa yooj yim.
Txoj cai ntws yuav tsum tau xaiv: Ob npaug -eccentric lossis triple- eccentric npauj npaim li qub raug xaiv, uas nws tus yam ntxwv ntws yog kwv yees li ntawm qhov sib npaug nrog cov kev cai siab. Npauj npaim li qub yuav tsum tsis txhob siv yog tias cov kev cai raug tsawg dua lossis sib npaug li ± 5%; tswj li qub lossis pob li qub yuav tsum tau siv los hloov.
Concentric npauj npaim li qub feem ntau tsis pom zoo rau kev tswj hwm vim qhov tshwj xeeb sealing siab. Eddy tam sim no cheeb tsam tshwm sim nyob rau sab nraum qab ntawm lub disc ntawm 30℃~ 70℃qhib, uas ua rau distorted flow yam ntxwv thiab qaug zog tsis ua hauj lwm ntawm roj hmab sealing khub nyob rau hauv rov compression.
1.4 Kev txiav txim siab ntawm kev teeb tsa thiab kev saib xyuas yooj yim
Wafer- hom npauj npaim li qub: Cov qauv tsim, lub teeb yuag thiab kev ua haujlwm me me, tab sis ob qho tib si flanges yuav tsum tau loosened rau disassembly; haum rau lub sijhawm uas tsis tshua muaj txij nkawm.
Flanged npauj npaim li qub: Ib qho yooj yim los sib sau ua ke thiab disassemble, haum rau cov chaw nres tsheb uas yuav tsum tau hloov kho thiab tu, feem ntau siv daim ntawv hauv cov chaw muaj.
Butt-welded npauj npaim li qub: Tsuas yog siv rau qhov tshwj xeeb siab -siab lossis xoom- lub sijhawm tawg, nyuaj los hloov ib zaug. Lus Cim: Welded npauj npaim li qub yog tsis tshua muaj siv nyob rau hauv huab cua txias xws li fais fab nroj tsuag lub ntsiab chav; welded rooj vag li qub los yog lub ntiaj teb li qub feem ntau tau txais yuav.
2 Lub Sijhawm Siv Tau
2.1 Kev Siv Dej & Dej Dej thiab Dej Kho Kev Lag Luam
Concentric soft- kaw npauj npaim li qub yog lub hauv paus, siv rau hauv cov kav dej / qhov hluav taws xob, aeration, sludge discharge thiab circulating water systems of waterworks and sewage treatment plant.
2.2 HVAC Systems
Npauj npaim li qub yog siv rau hauv cov dej txias thiab cov dej txias hauv cov kav dej hauv nruab nrab ntawm cov cua txias thiab cua sov, feem ntau yog txuam nrog qib, cab iav lossis hluav taws xob actuators.
2.3 Chemical and Pharmaceutical Industries
PTFE los yog PFA lined anti-corrosion npauj npaim li qub yog nyiam rau kev tshaj tawm xws li kua qaub- cov ntsiab lus daws teeb meem thiab cov kuab tshuaj organic, xav tau cov phab ntsa du, tsis muaj chaw tuav thiab tu yooj yim.
2.4 Kev lag luam zaub mov thiab dej haus
Sanitary stainless hlau polished npauj npaim li qub nrog clamp ceev sib txuas raug xaiv kom tau raws li CIP thiab SIP tu thiab kom tsis muaj menyuam.
2.5 Metallurgical thiab fais fab kev lag luam
Triple -eccentric hlau- kaw npauj npaim li qub yog thawj qhov kev xaiv rau cov dej ntws, desulfurization thiab denitrification pipelines thiab siab -kub flue gas systems (kub kuj qib ntawm valve lub cev khoom yuav tsum tau lees paub).
2.6 Shipbuilding thiab Offshore Engineering
Cov npauj npaim tshwj xeeb uas tiv taus ntsev tsuag corrosion thiab kev co yog xaiv, nrog tooj liab lossis dej hiav txwv -resistant stainless hlau (xws li, 2205 duplex stainless hlau) raws li cov khoom nyiam.
Kev xaiv ntawm npauj npaim li qub tsis tas; nws yuav tsum ua raws li cov kev ua haujlwm tiag tiag xws li cov yam ntxwv nruab nrab, kev ua haujlwm siab, tsim qhov kub thiab txias, sib txuam ntawm cov qauv sib khi, ua ke nrog cov xwm txheej tiag tiag xws li chaw teeb tsa thiab kev saib xyuas zaus kom tsis txhob xaiv qhov tsis tsim nyog.