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Muaj ntau yam teeb meem uas yuav tsum tau saib xyuas nyob rau hauv lub installation ntawm gaskets

Lub gasket yog ib qho kev sib khi zoo li qub uas daws tau "khiav, tawm, ntws, thiab xau".Txij li thaum muaj ntau yam zoo li qub sealing qauv, raws li cov ntaub ntawv sealing zoo li no, cov pav ca, elliptical gaskets, lens gaskets, cone gaskets, kua gaskets, O-rings, thiab ntau yam self-sealing gaskets tau tshwm sim raws li.Kev txhim kho kom raug ntawm lub gasket yuav tsum tau nqa tawm thaum lub flange kev twb kev txuas qauv los yog threaded kev twb kev txuas qauv, qhov zoo li qub sealing nto thiab lub gasket yog undoubtedly soj ntsuam, thiab lwm yam valve qhov chaw.

1. Ua ntej txhim kho lub gasket, siv ib txheej ntawm graphite hmoov los yog graphite hmoov sib tov nrog roj (los yog dej) ntawm lub sealing nto, gasket, xov thiab ntsia liaj qhov rooj thiab txiv ntseej rotating qhov chaw.Lub gasket thiab graphite yuav tsum huv si.

2. Lub gasket yuav tsum tau muab ntsia rau ntawm lub sealing nto yuav tsum nyob rau hauv nruab nrab, yog, tsis txhob deflector, tsis txhob mus rau hauv lub valve kab noj hniav los yog so ntawm lub xub pwg nyom.Sab hauv txoj kab uas hla ntawm lub gasket yuav tsum loj dua lub puab lub qhov ntawm lub sealing nto, thiab lub sab nraud txoj kab uas hla yuav tsum me ntsis me ntsis ntawm lub sab nraud txoj kab uas hla ntawm lub sealing nto, thiaj li yuav xyuas kom meej tias lub gasket yog tusyees compressed.

3. Tsuas yog ib daim gasket raug tso cai rau nruab, thiab nws tsis raug tso cai rau nruab ob lossis ntau qhov ntawm qhov chaw sib khi kom tshem tawm qhov tsis muaj qhov sib txawv ntawm ob qhov chaw sealing.

4. Lub oval gasket yuav tsum tau muab kaw kom lub puab thiab sab nraud ntawm lub gasket nyob rau hauv kev sib cuag, thiab ob kawg ntawm lub gasket yuav tsum tsis txhob nyob rau hauv kev sib cuag nrog rau hauv qab ntawm lub zawj.

5. Rau kev teeb tsa ntawm O-rings, tshwj tsis yog tias lub nplhaib thiab zawj yuav tsum ua tau raws li cov qauv tsim, tus nqi ntawm compression yuav tsum tsim nyog.Lub flatness ntawm hlau hollow O-rings feem ntau yog 10% mus rau 40%.Lub compression deformation tus nqi ntawm cov roj hmab O-rings yog cylindrical.Lub sealing zoo li qub ntawm sab saud yog 13% -20%;static sealing nto yog 15% -25%.Rau kev siab sab hauv, compression deformation yuav tsum siab dua thaum siv lub tshuab nqus tsev.Nyob rau hauv qhov chaw ntawm kev ruaj ntseg sealing, qhov me me ntawm compression deformation tus nqi, qhov zoo dua, uas tuaj yeem txuas lub neej ntawm O-ring.

6. Lub valve yuav tsum nyob rau hauv qhov chaw qhib ua ntej lub gasket muab tso rau ntawm lub hau, thiaj li tsis cuam tshuam rau lub installation thiab puas lub valve.Thaum kaw lub hau, kho txoj haujlwm, thiab tsis txhob hu rau lub gasket los ntawm kev thawb lossis rub kom tsis txhob txav thiab khawb ntawm lub gasket.Thaum kho txoj hauj lwm ntawm lub hau, koj yuav tsum nqa lub hau maj mam, thiab maj mam muab kho kom zoo.

7. Lub installation ntawm bolted los yog threaded gaskets yuav tsum tau xws li hais tias cov gaskets nyob rau hauv ib tug kab rov tav txoj hauj lwm (lub gasket cover rau threaded kev twb kev txuas yuav tsum tsis txhob siv cov yeeb nkab wrenches yog hais tias muaj ib tug wrench txoj hauj lwm).Cov ntsia hlau zawm yuav tsum tau txais kev sib xyaw ua ke, hloov pauv, thiab txawm tias txoj haujlwm ua haujlwm, thiab cov bolts yuav tsum tau buckled tag nrho, zoo huv si thiab tsis xoob.

8. Ua ntej lub gasket compressed, lub siab, qhov kub thiab txias, cov yam ntxwv ntawm cov khoom nruab nrab, thiab cov khoom siv gasket yuav tsum tau nkag siab meej meej los txiav txim siab ua ntej lub zog nruj.Lub zog ua ntej nruj yuav tsum raug txo kom ntau li ntau tau raws li qhov ua tau raws li qhov kev ntsuas siab tsis xau (ntau dhau lub zog ua ntej nruj yuav yooj yim ua rau lub gasket thiab ua rau lub gasket poob nws cov resilience).

9. Tom qab lub gasket tau nruj, nws yuav tsum tau ua kom ntseeg tau tias muaj qhov sib txawv ua ntej nruj rau cov khoom sib txuas, kom muaj chaw rau pre-tightening thaum lub gasket leaks.

10. Thaum ua haujlwm ntawm qhov kub thiab txias, cov bolts yuav muaj kev kub ntxhov, kev ntxhov siab, thiab muaj zog deformation, ua rau kom cov pa tawm ntawm lub gasket thiab yuav tsum tau thermal tightening.Ntawm qhov tsis sib xws, nyob rau hauv qhov kub qis, cov bolts yuav ntsws thiab yuav tsum tau txias loosened.Kub zawm yog pressurization, txias loosening yog siab nyem, kub zawm thiab txias loosening yuav tsum tau ua tom qab tswj qhov kub thiab txias ua hauj lwm rau 24 teev.

11. Thaum cov kua gasket yog siv rau lub sealing nto, lub sealing nto yuav tsum tau muab ntxuav los yog kho qhov chaw.Lub tiaj sealing nto yuav tsum zoo ib yam tom qab sib tsoo, thiab cov nplaum yuav tsum sib npaug (cov nplaum yuav tsum sib haum nrog kev ua haujlwm), thiab huab cua yuav tsum raug cais tawm ntau li ntau tau.Cov nplaum txheej feem ntau yog 0.1 ~ 0.2mm.Cov ntsia hlau xov yog tib yam li lub tiaj sealing nto.Ob qhov chaw sib cuag yuav tsum tau coated.Thaum screwing nyob rau hauv, nws yuav tsum nyob rau hauv ib tug ntsug txoj hauj lwm los pab txhawb huab cua tawm.Cov kua nplaum yuav tsum tsis txhob ntau dhau kom tsis txhob nchuav thiab ua rau lwm yam li qub.

12. Thaum siv PTFE zaj duab xis daim kab xev rau xov sealing, qhov pib ntawm zaj duab xis yuav tsum tau stretched nyias thiab glued rau xov nto;ces daim kab xev tshaj ntawm qhov pib yuav tsum tau muab tshem tawm kom cov zaj duab xis sticking rau cov xov mus rau hauv ib tug wedge.Nyob ntawm qhov sib txawv ntawm cov xov, nws feem ntau raug mob 1 mus rau 3 zaug.Lub winding kev taw qhia yuav tsum ua raws li cov lus qhia ntawm screwing, thiab qhov kawg point yuav tsum coincident nrog lub pib point;maj mam rub cov zaj duab xis rau hauv ib lub voj voog, kom lub thickness ntawm zaj duab xis yog tusyees mob.Ua ntej screwing nyob rau hauv, nias cov zaj duab xis nyob rau hauv lub kawg ntawm cov xov kom cov zaj duab xis yuav tsum screwed rau hauv xov nrog cov ntsia hlau;lub screwing yuav tsum tau qeeb thiab lub zog yuav tsum yog txawm;tsis txhob txav mus ntxiv tom qab zawm, thiab tsis txhob tig, txwv tsis pub nws yuav yooj yim rau xau.


Post lub sij hawm: Jan-14-2021