Seals rau cov khoom siv roj thiab roj ua haujlwm Description
Cov khoom siv roj thiab roj ua haujlwm yog ib feem tseem ceeb ntawm kev lag luam roj thiab roj, thiab lawv muaj lub luag haujlwm rau kev sib cais, ntxuav, thiab khaws cia cov roj thiab cov roj sib tov. Hauv cov txheej txheem no, cov ntsaws ruaj ruaj ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm kom zoo ntawm cov khoom siv thiab kev nyab xeeb ntawm ib puag ncig. Cov hauv qab no yog ib qho kev qhia txog cov ntsiab lus ntawm cov ntsaws ruaj ruaj rau cov khoom siv roj thiab roj ua:
Qhov tseem ceeb ntawm cov ntsaws ruaj ruaj rau cov khoom siv roj thiab roj
Thaum lub sijhawm ua haujlwm ntawm cov khoom siv roj thiab roj, nws yuav tsum tau ua haujlwm nrog kev kub siab, corrosive, flammable, thiab explosive media, yog li cov kev xav tau ntawm cov ntsaws ruaj ruaj yog qhov siab heev. Lub luag haujlwm tseem ceeb ntawm lub foob yog los tiv thaiv cov roj thiab cov pa tawm, ua kom lub siab ruaj khov hauv cov khoom siv, thiab tiv thaiv ib puag ncig los ntawm cov pa phem. Lub kaw lus sealing txhim khu kev qha tuaj yeem txo cov nqi tu, ua kom lub neej ntev ntawm cov cuab yeej siv, thiab txo qhov kev pheej hmoo ntawm kev nyab xeeb vim muaj cov dej xau.
| Hom khoom | Roj kuj | Kub tiv taus | Corrosion kuj | Mechanical zog |
|---|---|---|---|---|
| NBR | Zoo | -10 degree rau 100 degree | Zoo | Zoo |
| EPDM | Yog li ntawd | -25 degree rau 150 degree | Zoo | Zoo |
| VMQ | Yog li ntawd | -20 degree rau 200 degree | Tsis txaus | Zoo |
| FKM | Zoo heev | -20 degree rau 250 degree | Zoo heev | Zoo |
| PTFE | Zoo heev | -20 degree rau 250 degree | Zoo heev | Zoo heev |
Hom foob
Cov ntsaws ruaj ruaj feem ntau siv hauv cov khoom siv roj thiab roj ua haujlwm suav nrog:
Mechanical seals: Muaj ob lub nplhaib uas tig txheeb ze rau ib leeg, thiab raug kaw nrog qhov haum thiab lubrication. Mechanical ntsaws ruaj ruaj yog tsim rau high-speed thiab high-pressure ib puag ncig.
Packing sealing: Cov ntaub ntawv mos (piv txwv li, asbestos hlua, PTFE) yog siv los sau nruab nrab ntawm cov ncej thiab lub tsev kom tsis txhob muaj cov dej ntws los ntawm compressing cov khoom.
Floating foob: Lub foob dynamic uas tuav cov nyhuv sealing nyob rau hauv kev co thiab eccentricity ntawm lub ncej.
O-ring: Ib puag ncig roj hmab foob uas tau siv dav hauv kev sib khi zoo li qub thiab muaj zog.
Sib Nqus sealing: Kev siv lub zog sib nqus kom muaj kev sib cuag ntawm qhov chaw sib khi, haum rau lub sijhawm uas tsis muaj kev sib cuag.
Kev xaiv cov khoom siv sealing
Kev xaiv ntawm cov khoom sib khi yog nyob ntawm qhov chaw ua haujlwm ntawm cov khoom siv roj thiab roj, nrog rau qhov kub, siab, tshuaj lom neeg ntawm qhov nruab nrab, thiab lwm yam. Cov khoom siv feem ntau yog:
Roj Hmab: haum rau kev ua haujlwm dav dav, nrog zoo elasticity thiab sealing.
Polytetrafluoroethylene (PTFE): Kub-kub kuj, corrosion kuj, haum rau hnyav ib puag ncig.
Hlau: xws li stainless hlau, haum rau high-pressure thiab high-temperature ib puag ncig.
Composites: Muab cov txiaj ntsig ntawm ntau yam khoom siv kom haum rau kev sib khi tshwj xeeb.
Kev tu thiab hloov cov ntsaws ruaj ruaj
Kev tshuaj xyuas tsis tu ncua thiab kev saib xyuas cov ntsaws ruaj ruaj yog qhov tseem ceeb ntawm kev ua kom cov khoom siv roj thiab roj ua haujlwm tau zoo. Leaks tuaj yeem tshwm sim los ntawm kev hnav, hnub nyoog, lossis kev puas tsuaj rau cov ntsaws ruaj ruaj. Yog li ntawd, qhov xwm txheej ntawm cov ntsaws ruaj ruaj yuav tsum tau kuaj xyuas tsis tu ncua thiab hloov yog tias tsim nyog.
Xaus
Cov ntsaws ruaj ruaj rau cov khoom siv roj thiab roj ua haujlwm yog qhov tseem ceeb los ua kom muaj kev nyab xeeb thiab ua tau zoo ntawm cov roj thiab roj ua haujlwm. Xaiv hom kev foob thiab cov khoom siv zoo, nrog rau kev ua haujlwm tsis tu ncua thiab hloov pauv, yog qhov tseem ceeb rau kev tswj cov cuab yeej ua haujlwm thiab kev tiv thaiv ib puag ncig. Raws li kev siv thev naus laus zis, cov ntaub ntawv sib khi tshiab thiab cov qauv tsim tawm txuas ntxiv los txhim kho kev ntseeg siab thiab kev nyab xeeb ntawm cov khoom siv roj thiab roj.
Cim npe nrov: Tuam Tshoj seals rau roj thiab roj ua cov cuab yeej, Tuam Tshoj cov khoom siv roj thiab roj ua cov khoom lag luam, cov chaw muag khoom, lub Hoobkas
