1. Flange kev twb kev txuas
Qhov no yog feem ntau siv daim ntawv ntawm kev sib txuas hauv li qub.Raws li cov duab ntawm qhov sib koom ua ke, nws tuaj yeem muab faib ua pawg hauv qab no:
● Hom du: nws yog siv rau lub valve uas tsis tshua muaj siab thiab yooj yim rau kev ua haujlwm.
● Concave convex hom: lub siab ua hauj lwm siab, thiab nruab nrab hard washer yuav siv tau.
● Tenon groove hom: tshuab ntxhua khaub ncaws nrog cov yas deformation loj tuaj yeem siv tau, uas yog siv dav hauv nruab nrab corrosive thiab muaj cov nyhuv sealing zoo.
● Trapezoidal groove hom: siv lub nplhaib hlau elliptical li gasket, thiab siv rau lub valve nrog kev ua haujlwm siab ≥ 64kg / cm2 lossis siab kub valve.
● Lens hom: gasket yog lub lens zoo, ua los ntawm hlau.Rau siab siab valve lossis siab kub valve nrog kev ua haujlwm siab ≥ 100kg / cm2.
● O-ring hom: Qhov no yog ib daim ntawv tshiab ntawm flange kev twb kev txuas, uas yog tsim nrog cov tshwm sim ntawm ntau yam roj hmab O-rings.Nws yog qhov txhim khu kev qha ntau dua li cov gasket zoo tib yam hauv cov nyhuv sealing.
2 Threaded kev twb kev txuas
Qhov no yog ib txoj kev sib txuas yooj yim, feem ntau siv rau cov li qub me me.Muaj ob qhov xwm txheej:
● Direct sealing: cov xov sab hauv thiab sab nraud ua lub luag haujlwm ncaj qha hauv kev sib khi.Txhawm rau kom tsis txhob muaj qhov sib txuam, cov roj lead, xov hemp thiab polytetrafluoroethylene raw khoom siv siv rau kev txhaws.Ntawm lawv, polytetrafluoroethylene raw khoom siv siv dav siv.Cov khoom no muaj kev tiv thaiv corrosion zoo, zoo sealing nyhuv, yooj yim siv thiab khaws cia.Thaum disassembling, nws tuaj yeem raug tshem tawm tag nrho, vim tias nws yog cov yeeb yaj kiab uas tsis yog nplaum, uas yog qhov zoo tshaj rau cov roj txhuas thiab cov xov hemp.
● Indirect sealing: lub zog ntawm cov xov nruj yog xa mus rau lub gasket ntawm ob lub dav hlau kom lub gasket ua lub luag haujlwm sealing.
3 Ferrule kev sib txuas
Kev sib txuas ferrule tau tsim nyob rau xyoo tas los no hauv Suav teb.Qhov zoo ntawm daim ntawv txuas no yog raws li hauv qab no:
● Cov ntim me me, lub teeb yuag, cov qauv yooj yim thiab yooj yim disassembly;
● Kev sib txuas muaj zog, kev siv dav dav, thiab tuaj yeem tiv taus siab (1000 kg / cm2), kub siab (650 ° C) thiab cuam tshuam kev co;
● Ntau yam khoom siv tuaj yeem xaiv, haum rau kev tiv thaiv corrosion;
● Kev ua kom raug qhov yuav tsum tau ua tsis siab;
● Nws yog qhov yooj yim rau kev teeb tsa siab.Tam sim no, daim ntawv ntawm ferrule kev twb kev txuas tau siv nyob rau hauv ib co me me chaw nres nkoj valve khoom nyob rau hauv Tuam Tshoj.
4 Clamp kev twb kev txuas
Qhov no yog txoj kev sib txuas ceev ceev, nws tsuas yog xav tau ob lub bolts, uas yog qhov tsim nyog rau cov valve uas tsis tshua muaj siab uas feem ntau disassembled.
5 Sab hauv nws tus kheej nruj kev twb kev txuas
Sib txawv ntawm lwm txoj kev sib txuas, sab nraud quab yuam yog siv los tiv thaiv qhov nruab nrab siab kom ua tiav sealing.Lub nplhaib sealing yog ntsia ntawm lub khob hliav qab, tsim ib qho kev kawm nrog lub ntsej muag rov qab mus rau qhov nruab nrab.Qhov nruab nrab siab yog kis mus rau lub khob hliav qab, thiab tom qab ntawd mus rau lub nplhaib sealing.Nyob rau ntawm lub conical nto nrog lub kaum sab xis, ob yam khoom tsim tawm, ib qho yog sib npaug rau cov kab nruab nrab ntawm lub cev valve thiab lwm qhov yog nias rau sab hauv phab ntsa ntawm lub cev valve.Cov khoom tom kawg yog lub zog ntawm tus kheej nruj.Qhov siab dua qhov nruab nrab, qhov ntau dua tus kheej nruj zog.Yog li no hom kev sib txuas yog tsim rau siab siab valve.Piv nrog flange kev twb kev txuas, nws tuaj yeem txuag tau ntau ntawm cov ntaub ntawv thiab cov neeg ua haujlwm, tab sis nws kuj xav tau qee qhov kev nruj ua ntej, kom nws tuaj yeem siv tau zoo thaum lub siab hauv lub valve tsis siab.
Muaj ntau hom kev sib txuas ntawm lub valve, piv txwv li, qee qhov me me uas tsis tas yuav raug tshem tawm yog welded nrog cov kav dej;Qee qhov tsis yog-hlau li qub tau txais kev sib txuas ntawm lub qhov (socket), thiab lwm yam. Cov neeg siv valve yuav tsum tau kho raws li cov xwm txheej tshwj xeeb.
Post lub sij hawm: Mar-24-2022