Cov khoom

Yuav Ua Li Cas Xaiv Tus Mechanical Seal Design

Aug 03, 2021

Kev xaiv ntawm cov tshuab foob hom yog ib kauj ruam tseem ceeb hauv cov txheej txheem tsim, yuav tsum tshawb xyuas ua ntej:
1.Ua hauj lwm tsis-Media siab, kub, ncej txoj kab uas hla thiab ceev.
2. Cov yam ntxwv nruab nrab - concentration, viscosity, causticity, nrog los yog tsis muaj khoom hais thiab fiber impurities, txawm nws yog ib qho yooj yim rau vaporize los yog crystallization.
3. Cov yam ntxwv kev ua haujlwm thiab ib puag ncig - kev ua haujlwm tsis tu ncua lossis tsis sib xws; Tus tswv tsev tau teeb tsa hauv chav lossis raug pom; Cov khoom nyob ib puag ncig thiab kub hloov pauv.
4. Tus tswv tsev ntawm lub foob kom tso cai rau cov dej xau, kev taw qhia txog kev xau (sab hauv to lossis sab nraud) yuav tsum tau ua; Lub neej thiab kev ntseeg tau.
5. Tus tswv tsev ntawm qhov loj ntawm cov qauv foob txwv.
6. Kev ua haujlwm thiab cov txheej txheem ntau lawm stability.
Ua ntej, raws li kev ua haujlwm tsis ua haujlwm P, V, T xaiv:

Ntawm no P yog qhov nruab nrab siab ntawm lub foob kab noj hniav.Nyob ntawm qhov loj ntawm tus nqi P, tuaj yeem txiav txim siab pib seb puas yuav xaiv cov qauv sib npaug nrog rau qhov ntsuas ntawm qhov sib npaug.Rau qhov nruab nrab siab viscosity, zoo lubricity, p ≤ 0.8MPa, los yog tsawg viscosity, tsis zoo lubricity ntawm nruab nrab, p ≤ 0.5MPa, feem ntau yog siv cov qauv tsis sib npaug.Thaum tus nqi p siab tshaj qhov saum toj no, cov qauv sib npaug yuav tsum tau txiav txim siab.Thaum P ≥ 15MPa, cov qauv sib npaug ntawm ib qho kawg yog qhov nyuaj kom ua tau raws li qhov yuav tsum tau ua, lub sijhawm no yuav siv tau nyob rau hauv series multi-terminal foob.
U yog lub voj voog voj voog ntawm qhov nruab nrab txoj kab uas hla ntawm lub sealing nto, thiab txiav txim seb lub elastic caij rotates nrog lub axis raws li tus nqi ntawm tus nqi ntawm U, uas yog siv lub caij nplooj ntoos hlav-type rotary los yog caij nplooj ntoos hlav-loaded qauv. tsawg dua 20-30m / s tuaj yeem siv lub caij nplooj ntoos hlav-hom kev sib hloov, kev ceev nrawm dua, vim qhov tsis sib xws ntawm cov khoom sib hloov tau yooj yim ua rau muaj zog vibration, nws yog qhov zoo tshaj plaws los siv lub caij nplooj ntoos hlav zoo li qub.Yog tias tus nqi ntawm P thiab U. yog ob qho tib si siab, xav txog kev siv cov qauv hydrodynamic.
T yog hais txog qhov kub ntawm qhov nruab nrab hauv lub kaw lus kaw, raws li qhov loj ntawm T kom txiav txim siab cov khoom siv lub nplhaib sealing, sealing nto cua txias txoj kev thiab nws cov auxiliary system.Tub kub T thaum lub sij hawm 0-80 ℃, lub nplhaib pab yog Feem ntau xaiv nitrile roj hmab O-ring; T nruab nrab ntawm -50 - +150 ℃, raws li lub zog corrosive ntawm cov xov xwm, kev xaiv ntawm fluorine roj hmab, silicone roj hmab los yog PTFE packing filler nplhaib muaj.Thaum qhov kub thiab txias yog qis dua -50 los yog siab tshaj 150 ℃, roj hmab thiab polytetrafluoroethylene yuav tsim tsis kub embrittlement los yog kub kub aging, lub sij hawm no yuav siv tau hlau bellows qauv.Thaum lub turbidity ntawm nruab nrab yog siab tshaj 80 ℃, nws yog feem ntau yuav tsum tau xav txog nws raws li qhov siab. kub nyob rau hauv lub sealing teb, thiab cov kev ntsuas cua txias yuav tsum tau coj.

Secondary, xaiv raws li kev tshaj tawm yam ntxwv:
Corrosive tsis muaj zog nruab nrab, feem ntau yog siv built-in mechanical foob, qhov kawg ntawm lub xeev quab yuam thiab cov kev taw qhia ntawm cov ntaub ntawv tawm yog tsim nyog dua piv nrog rau lwm hom.Rau muaj zog corrosive xov xwm, vim hais tias lub caij nplooj ntoos hlav khoom xaiv yog nyuaj dua, koj siv tau. Sab nraud los yog polytetrafluoroethylene bellows mechanical seal, tab sis feem ntau tsuas yog siv tau P ≤ 0.2-0.3MPa ntau yam. Yooj yim rau crystallize, yooj yim rau solidify thiab siab viscosity nruab nrab, yuav tsum siv ib lub caij nplooj ntoos hlav rotary qauv.Vim tias me me springs yog yooj yim clogged nrog solids, siab viscosity media yuav ua rau lub caij nplooj ntoos hlav me me axial them zog txav blocked.Flammable, explosive, toxic media, thiaj li yuav xyuas kom meej tias cov xov xwm tsis to, yuav tsum tau siv ib tug ob-kawg qauv nrog ib tug sealant (kua cais) yuav tsum tau siv.
Raws li cov kev ua haujlwm saum toj no thiab kev tshaj tawm cov yam ntxwv ntawm cov qauv xaiv feem ntau tsuas yog qhov kev pab cuam ua ntej xwb, qhov kev txiav txim siab zaum kawg yuav tsum tau coj mus rau hauv tus account tus yam ntxwv ntawm tus tswv tsev thiab qee qhov tshwj xeeb uas yuav tsum tau ua rau sealing. Piv txwv li, tus tswv tsev ntawm lub nkoj qee zaum hauv kev txiav txim kom tau txais qhov chaw zoo dua, qhov loj ntawm lub foob thiab qhov chaw ntawm lub installation feem ntau ua kom nruj heev.Ib qho piv txwv yog lub submarine ntawm lub twj tso kua mis, nyob rau hauv lub submarine ups thiab downs, lub siab txawv heev. Nyob rau hauv cov ntaub ntawv no. , tus qauv qauv tsis tuaj yeem xaiv tsis tu ncua, tab sis yuav tsum tau tsim tshwj xeeb rau kev ua haujlwm tshwj xeeb, thiab siv cov kev ntsuas tsim nyog


Post lub sij hawm: Aug-20-2021