1.Ntxiv roj sealing

Rau cov li qub uas tsis siv cov roj sealing, xav txog kev ntxiv cov roj sealing los txhim kho lub valve qia sealing kev ua tau zoo.

2. Ntxiv muab tub lim

Txhawm rau txhim kho qhov kev ua tau zoo ntawm kev ntim khoom rau lub valve qia, txoj kev ntxiv ntim tuaj yeem siv tau.Feem ntau, ob txheej txheej los yog ntau txheej sib xyaw ua ke yog siv.Tsuas yog nce kom muaj nuj nqis, xws li nce tus lej ntawm 3 daim mus rau 5 daim, yuav tsis muaj qhov pom tseeb.

3. Hloov cov graphite muab tub lim

PTFE packing siv dav siv nyob rau hauv qhov kub ntawm -20 txog +200 ° C.Thaum qhov kub thiab txias hloov pauv ntawm qhov txwv sab sauv thiab qis, nws qhov kev sib khi ua haujlwm yuav txo qis, nws yuav muaj hnub nyoog sai thiab nws lub neej yuav luv.

Flexible graphite fillers kov yeej cov kev tsis txaus no thiab muaj lub neej ua haujlwm ntev.Yog li ntawd, qee qhov chaw tsim khoom tau hloov tag nrho cov PTFE packing rau graphite packing, thiab txawm tias cov khoom siv tshiab tshiab tau siv tom qab hloov PTFE packing nrog graphite packing.Txawm li cas los xij, hysteresis ntawm kev siv graphite muab tub lim yog qhov loj, thiab qee zaum nkag tau tshwm sim thaum xub thawj, yog li qee qhov kev xav yuav tsum tau muab rau qhov no.

4. Hloov cov kev taw qhia ntws thiab tso P2 ntawm lub valve qia kawg.

Thaum △P loj thiab P1 loj, sealing P1 yog pom tseeb nyuaj dua sealing P2.Yog li, cov kev taw qhia ntws tuaj yeem hloov pauv los ntawm P1 ntawm lub valve qia kawg mus rau P2 ntawm lub valve qia kawg, uas yog qhov zoo dua rau cov li qub nrog lub siab thiab qhov sib txawv loj.Piv txwv li, hauv qab li qub feem ntau yuav tsum xav txog kev sib khi P2.

5. Siv lub lens gasket sealing

Rau kev sib khi ntawm lub hau npog sab saud thiab sab saud, kev sib khi ntawm lub rooj zaum valve thiab lub cev lub cev sab saud thiab qis.Yog tias nws yog lub foob tiaj tiaj, nyob rau hauv qhov kub thiab txias siab, qhov kev sib khi ua haujlwm tsis zoo, ua rau kom tawg.Koj tuaj yeem siv lub lens gasket foob hloov, uas tuaj yeem ua tiav cov txiaj ntsig zoo.

6. Hloov lub sealing gasket

Txog tam sim no, feem ntau sealing gaskets tseem siv asbestos boards.Thaum qhov kub thiab txias, qhov kev sib khi ua haujlwm tsis zoo thiab kev pabcuam lub neej luv luv, ua rau kom muaj dej.Nyob rau hauv rooj plaub no, koj tuaj yeem siv kauv qhov txhab gaskets, "O" rings, thiab lwm yam, uas tam sim no ntau lub Hoobkas tau txais yuav.

7. Tighten bolts symmetrically thiab kaw nrog nyias gaskets

Nyob rau hauv lub regulating valve qauv nrog "O" nplhaib foob, thaum tuab gaskets nrog loj deformation (xws li winding sheets) yog siv, yog hais tias lub compression yog asymmetrical thiab lub zog yog asymmetrical, lub foob yuav yooj yim puas, tilted thiab deformed.Muaj kev cuam tshuam loj rau kev ua haujlwm sealing.

Yog li ntawd, thaum kho thiab sib sau ua ke hom valve, compression bolts yuav tsum tau nruj symmetrically (nco ntsoov tias lawv tsis tuaj yeem nruj ib zaug).Nws yuav zoo dua yog tias cov roj hmab tuab tuaj yeem hloov pauv mus rau nyias gasket, uas tuaj yeem txo qhov kev xav tau yooj yim thiab xyuas kom muaj kev sib khi.

8.Txhim qhov dav ntawm lub sealing nto

Lub tiaj tus valve tseem ceeb (xws li lub valve ntsaws ntawm ob txoj hauj lwm valve thiab lub tes tsho valve) tsis muaj kev qhia thiab taw qhia nkhaus nto ntawm lub rooj zaum valve.Thaum lub valve ua haujlwm, cov tub ntxhais valve yog raug rau sab nraud quab yuam thiab ntws tawm ntawm qhov kev taw qhia inflow.Square, qhov loj dua qhov sib txawv ntawm cov tub ntxhais valve, qhov loj dua qhov tshwm sim unilateral yuav yog.Tsis tas li ntawd, deformation, tsis concentricity, los yog me me chamfering ntawm lub valve tub ntxhais sealing nto (feem ntau 30 ° chamfering rau kev taw qhia) yuav ua rau lub valve core sealing thaum nws yog ze rau kaw.Lub ntsej muag chamfered kawg yog muab tso rau ntawm qhov chaw sib khi ntawm lub rooj zaum valve, ua rau lub valve tseem ceeb dhia thaum kaw, lossis txawm tias tsis kaw txhua, ua rau kom lub valve ntws tawm.

Qhov yooj yim tshaj plaws thiab kev daws teeb meem zoo tshaj plaws yog txhawm rau ua kom qhov loj ntawm lub valve tub ntxhais sealing nto, kom qhov tsawg kawg nkaus txoj kab uas hla ntawm lub valve tub ntxhais kawg lub ntsej muag yog 1 mus rau 5 hli me dua li ntawm lub rooj zaum valve, thiab muaj kev taw qhia txaus los xyuas kom meej tias lub valve. core yog coj mus rau hauv lub rooj zaum valve thiab tswj Zoo sealing nto kev sib cuag.