Qhov teeb meem ntawm dynamic sealing ntawm cov cuab yeej ib txwm muaj nrog rau kev ua haujlwm ntawm cov khoom siv. Niaj hnub no, peb tau txheeb xyuas ntau yam ntawm cov ntaub ntawv sealing, daim ntawv thov ntau yam thiab cov yam ntxwv uas feem ntau siv hauv cov khoom siv hluav taws xob, kom txhua tus tuaj yeem nkag siab tob txog qhov teeb meem sealing.
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1. Ntim ntim
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Packing seals tuaj yeem muab faib ua:
soft packing seal
Hard packing seal
Moulded packing foob
1. Mos packing foob
Soft packing type: packing
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Cov pob khoom feem ntau yog braided los ntawm cov xov hlau softer, ntim rau hauv lub kaw lus kaw los ntawm cov strips nrog thaj tsam square cross-sectional, thiab lub caj pas ua kom muaj zog compressive rau cov ntim, yuam cov packing yuav tsum nias tawm tsam sealing nto (ncej ntawm lub sab nrauv thiab lub sealing kab noj hniav), lub radial quab yuam uas ua rau lub sealing nyhuv, yog li plays lub luag hauj lwm sealing.
Lub sijhawm tsim nyog rau kev ntim khoom muag:
Cov khoom xaiv rau packing txiav txim siab sealing nyhuv ntawm packing. Feem ntau hais lus, cov khoom ntim yog txwv los ntawm qhov kub, siab thiab pH ntawm qhov nruab nrab ua haujlwm, thiab qhov roughness thiab eccentricity ntawm cov cuab yeej siv tshuab uas cov khoom ntim ua haujlwm thiab kab nrawm, thiab lwm yam, kuj tseem yuav muaj cov cai rau kev xaiv cov khoom siv. ntawm kev ntim khoom.
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Graphite packing tuaj yeem tiv taus qhov kub thiab txias, thiab yog ib qho ntawm cov khoom siv zoo tshaj plaws los daws cov teeb meem kub thiab kub siab sealing. Corrosion kuj, zoo sealing kev ua tau zoo, thiab ruaj khov thiab txhim khu kev qha muaj nuj nqi.
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Aramid packing yog ib hom muaj zog organic fiber ntau, thiab cov woven packing yog impregnated nrog polytetrafluoroethylene emulsion thiab lubricant.
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PTFE packing yog ua los ntawm cov ntshiab PTFE dispersion resin li raw khoom, thawj zaug ua rau cov ntaub ntawv raw, ces twisted, braided thiab woven rau hauv packing. Nws tuaj yeem siv dav hauv cov khoom noj, tshuaj, papermaking thiab tshuaj fiber ntau, thiab lwm yam. Cov kev cai huv huv, thiab cov li qub thiab cov twj tso kua mis uas muaj zog corrosive media.
2. Hard packing foob
Muaj ob hom kev ntim khoom nyuaj: cais lub nplhaib thiab cov nplhaib sib cais.
2. Mechanical foob
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Lub tshuab foob yog ib txwm tsim los ntawm ob ntu, qhov hloov pauv (qhov daj) thiab qhov chaw nres tsheb (txiv kab ntxwv).
Lub tshuab foob tseem hu ua qhov kawg lub ntsej muag foob, uas tau txhais raws li cov qauv hauv lub tebchaws: yam tsawg kawg ib khub ntawm qhov kawg ntawm lub ntsej muag perpendicular rau lub axis ntawm kev sib hloov yog tuav ua ke thiab kuj swb nyob rau hauv kev koom tes ntawm cov kua siab, elastic. quab yuam (los yog sib nqus quab yuam) ntawm cov nyiaj them poob haujlwm thiab lub foob foob, thaum lub cuab yeej tiv thaiv cov kua dej tawm.
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3. Qhuav roj foob
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Dry gas seal, uas yog, "dry khiav roj foob", yog ib hom tshiab ntawm ncej kawg foob uas siv slotted sealing tshuab rau roj foob, thiab belongs rau lub foob tsis sib cuag.
Nta:
Kev ua haujlwm zoo sealing, lub neej ntev, tsis muaj roj sealing system, tsis siv hluav taws xob, kev ua haujlwm yooj yim thiab kev ua haujlwm tsawg thiab cov nqi tu. Raws li kev txij nkawm-dawb sealing system uas tsis tas yuav tsum muaj lub ntsej muag lub ntsej muag txias thiab cov roj lubricating, cov roj foob qhuav tau hloov cov nplhaib ntab ntab thiab cov ntsaws ruaj ruaj labyrinth los ua lub ntsiab foob ntawm kev kub ceev centrifugal compressor ncej seals hauv kev lag luam petrochemical.
Daim ntawv thov:
Centrifugal compressors thiab lwm yam high-speed thiab lwm yam high-speed fluid machinery yog haum rau kev ua hauj lwm tej yam kev mob uas ib tug me me npaum li cas ntawm cov pa roj nkag mus rau hauv cov huab cua tsis muaj teeb meem, xws li cua compressors, nitrogen compressors, thiab lwm yam.
4. Labyrinth foob
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Lub labyrinth foob yog teem ib tug xov tooj ntawm annular sealing hniav teem nyob rau hauv ib ntus nyob ib ncig ntawm lub rotating ncej. Ib tug series ntawm interception gaps thiab expansion kab noj hniav yog tsim ntawm cov hniav. Lub hom phiaj.
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Labyrinth foob yog daim ntawv tseem ceeb tshaj plaws ntawm kev sib khi ntawm cov theem thiab ncej kawg ntawm centrifugal compressors. Raws li cov yam ntxwv sib txawv, nws tuaj yeem muab faib ua plaub hom: hom du, zigzag type, stepped type thiab honeycomb type.
1. Smooth labyrinth foob
Lub labyrinth du foob muaj ob lub qauv, ib qho thiab ntxig, uas yooj yim hauv cov qauv thiab yooj yim rau kev tsim, tab sis cov nyhuv sealing tsis zoo.
2. Zigzag labyrinth foob
Lub zigzagging labyrinth foob tseem muab faib ua ob lub qauv: ib qho thiab ntxig. Cov yam ntxwv ntawm hom labyrinth foob yog qhov siab ntawm qhov sib khi ntawm cov hniav sib txawv, thiab cov hniav siab thiab cov hniav qis yog teem ua ke. Qhov sib txuam ncej nto yog qhov tshwj xeeb concave-convex zawj. groove, cov qauv ntawm cov hniav siab thiab qis thiab concave-convex grooves, ua rau lub sealing zoo sib xws rau hauv ib hom zigzag, yog li ua rau cov dej ntws tawm thiab txhim kho kev sib khi. Tab sis nws tsuas yog siv tau rau hauv lub tog raj kheej lossis muab faib nrog cov kab rov tav sib cais, thiab lub cev sealing yuav tsum tau ua rau hauv hom kab rov tav.
3. Cov ntaiv labyrinth foob
Los ntawm kev txheeb xyuas cov qauv, cov kauj ruam labyrinth foob zoo ib yam li lub foob labyrinth du, tab sis cov nyhuv sealing zoo ib yam li zigzag labyrinth foob. Nws feem ntau yog siv ntawm lub impeller npog phaj thiab tshuav phaj.
4. Honeycomb labyrinth foob
Lub sealing hniav ntawm honeycomb labyrinth foob yog welded rau hauv ib tug honeycomb zoo los tsim ib tug complex-zoo li tus expansion chamber. Nws cov sealing kev ua tau zoo yog qhov zoo dua li cov ntaub ntawv sib khi dav dav, thiab nws yog qhov tsim nyog rau lub sijhawm muaj qhov sib txawv loj, xws li qhov sib npaug disc foob ntawm lub centrifugal compressor. Kev tsim cov txheej txheem ntawm honeycomb labyrinth foob yog qhov nyuaj, lub zog ntawm daim ntawv sealing yog siab, thiab cov nyhuv sealing zoo.
5. Roj foob
Cov roj foob yog tus kheej-tightening di ncauj foob nrog cov qauv yooj yim, me me, tus nqi qis, kev saib xyuas yooj yim, thiab me me torque. Nws tuaj yeem tiv thaiv cov pa nruab nrab thiab cov plua plav sab nraud thiab lwm yam khoom tsis zoo los ntawm kev nkag mus. Hnav muaj qee lub peev xwm los them rov qab, tab sis nws tsis tiv taus qhov kub siab, yog li nws feem ntau siv rau hauv cov twj siv tshuaj hauv cov xwm txheej tsis tshua muaj siab.
6. Lub zog foob
Thaum lub twj tso kua mis tshuaj ua haujlwm, lub siab lub taub hau tsim los ntawm cov pab cuam impeller sib npaug cov kua dej siab ntawm lub qhov hluav taws xob ntawm lub impeller lub ntsiab, yog li ua tiav sealing. Thaum lub twj tso kua mis nres, lub auxiliary impeller tsis ua hauj lwm, yog li nws yuav tsum tau nruab nrog ib tug nres sealing ntaus ntawv nyob rau tib lub sij hawm los daws cov tshuaj twj tso kua mis uas yuav tshwm sim thaum lub twj tso kua mis nres. Lub sealing qauv ntawm auxiliary impeller yog yooj yim, txhim khu kev qha thiab muaj lub neej ua haujlwm ntev. Nws tuaj yeem paub txog dej tsis sib haum thaum lub sijhawm ua haujlwm ntawm cov twj siv tshuaj, yog li nws feem ntau siv rau hauv cov twj siv tshuaj uas thauj cov impurities-muaj xov xwm.
7. Kauv foob
Kauv foob kuj yog ib daim ntawv ntawm dynamic foob. Nws yog ib tug kauv zawj ua tiav ntawm lub rotating ncej los yog lub tes tsho uas muaj cov ncej, thiab lub sealing nruab nrab yog ntim ntawm lub ncej thiab lub tes tsho. Kev sib hloov ntawm cov ncej ua rau lub helical zawj ua haujlwm zoo li lub twj tso kua mis, yog li tiv thaiv cov dej xau ntawm sealing kua. Qhov loj ntawm nws lub peev xwm sealing muaj feem xyuam rau lub kaum sab xis ntawm lub helix, lub suab, qhov dav ntawm cov hniav, qhov siab ntawm cov hniav, kev ua haujlwm ntev ntawm cov hniav thiab qhov loj ntawm qhov sib txawv ntawm cov ncej thiab lub tes tsho. Txij li thaum tsis muaj kev sib txhuam ntawm cov ntsaws ruaj ruaj, kev pab cuam lub neej ntev, tab sis vim qhov kev txwv ntawm qhov chaw ntawm cov txheej txheem, cov kauv ntev feem ntau luv luv, yog li lub peev xwm sealing kuj raug txwv. Thaum lub twj tso kua mis siv ntawm qhov txo qis, nws cov nyhuv sealing yuav txo qis heev.
