1. Neeg kho tshuabkev paub txog kev foob: kev ua haujlwm ntawm cov tshuab foob
Mechanical foobyog cov khoom siv foob pob hluav taws uas tso siab rau ib lossis ob peb khub ntawm lub ntsej muag kawg uas xaub rov qab mus rau ntawm tus ncej kom haum raws li qhov kev txiav txim ntawm cov dej siab thiab lub zog elastic (lossis sib nqus quab yuam) ntawm cov nyiaj them poob haujlwm thiab tau nruab nrog cov ntsaws ruaj ruaj kom ua tiav kev tiv thaiv kev xau.
2. Kev xaiv cov khoom siv feem ntau siv rau cov tshuab foob
Cov dej ntshiab huv;qhov kub thiab txias;(dynamic) 9CR18, 1CR13 surfacing cobalt chromium tungsten, cam khwb cia hlau;(static) impregnated resin graphite, bronze, phenolic yas.
Cov dej hauv dej (muaj sediment);qhov kub thiab txias;(dynamic) tungsten carbide, (zoo li qub) tungsten carbide
Dej hiav txwv;qhov kub thiab txias;(dynamic) tungsten carbide, 1CR13 cladding cobalt chromium tungsten, cam khwb cia hlau;(static) impregnated resin graphite, tungsten carbide, cermet;
Superheated dej 100 degrees;(dynamic) tungsten carbide, 1CR13 surfacing cobalt chromium tungsten, cam khwb cia hlau;(static) impregnated resin graphite, tungsten carbide, cermet;
Roj av, lubricating roj, kua hydrocarbon;qhov kub thiab txias;(dynamic) tungsten carbide, 1CR13 surfacing cobalt chromium tungsten, cam khwb cia hlau;(static) impregnated resin los yog tin-antimony alloy graphite, phenolic yas.
Roj av, lubricating roj, kua hydrocarbon;100 degrees;(dynamic) tungsten carbide, 1CR13 surfacing cobalt chromium tungsten;(static) impregnated bronze los yog cob graphite.
Roj av, lubricating roj, kua hydrocarbons;muaj cov khoom;(dynamic) tungsten carbide;(static) tungsten carbide.
3. Hom thiab kev siv ntawmsealing cov ntaub ntawv
Cov sealing khoom yuav tsum ua tau raws li qhov yuav tsum tau ua ntawm sealing kev ua tau zoo.Vim hais tias cov xov xwm yuav tsum tau muab sib khi sib txawv thiab cov kev ua haujlwm ntawm cov khoom siv sib txawv, cov ntaub ntawv sib khi yuav tsum muaj qhov sib txawv.Cov kev xav tau rau cov ntaub ntawv sealing feem ntau yog:
1) Cov khoom siv tau zoo ntom ntom thiab tsis yooj yim rau cov dej tawm;
2) Muaj qhov tsim nyog txhua yam muaj zog thiab hardness;
3) Zoo compressibility thiab resilience, me me mus tas li deformation;
4) Tsis soften los yog decompose ntawm qhov kub thiab txias, tsis tawv los yog tawg ntawm qhov kub thiab txias;
5) Nws muaj kev tiv thaiv corrosion zoo thiab tuaj yeem ua haujlwm ntev hauv cov kua qaub, alkali, roj thiab lwm yam xov xwm.Nws ntim thiab hardness hloov me me, thiab nws tsis ua raws li cov hlau nto;
6) Kev sib txhuam me me thiab hnav tsis kam;
7) Nws muaj qhov yooj yim los ua ke nrog covsealing nto;
8) Zoo aging kuj thiab durability;
9) Nws yooj yim rau kev ua thiab tsim khoom, pheej yig thiab yooj yim kom tau cov ntaub ntawv.
Roj hmabyog cov khoom siv sealing ntau tshaj plaws.Ntxiv rau cov roj hmab, lwm cov ntaub ntawv sib khi tsim nyog suav nrog graphite, polytetrafluoroethylene thiab ntau yam sealants.
4. Cov txheej txheem tseem ceeb rau kev teeb tsa thiab kev siv cov tshuab foob
1).Lub radial runout ntawm cov cuab yeej rotating ncej yuav tsum yog ≤0.04 hli, thiab axial txav yuav tsum tsis txhob ntau tshaj 0.1 hli;
2) Lub sealing ib feem ntawm cov cuab yeej yuav tsum tau ceev kom huv si thaum lub sij hawm installation, lub sealing qhov chaw yuav tsum tau muab ntxuav, thiab lub sealing kawg lub ntsej muag yuav tsum tsis txhob yuav impurities thiab hmoov av los ntawm kev coj mus rau hauv lub sealing ib feem;
3).Nws yog nruj me ntsis txwv tsis pub ntaus lossis khob thaum lub sijhawm teeb tsa kom tsis txhob muaj kev sib txhuam kev puas tsuaj rau lub tshuab foob thiab foob tsis ua haujlwm;
4) Thaum lub sij hawm installation, ib txheej ntawm cov khoom siv roj huv yuav tsum tau siv rau saum npoo ntawm kev sib cuag nrog lub foob kom ntseeg tau tias kev txhim kho du;
5) Thaum txhim kho lub nplhaib zoo li qub, cov ntsia hlau nruj yuav tsum sib npaug sib npaug los xyuas kom meej qhov sib txawv ntawm lub ntsej muag kawg ntawm lub nplhaib zoo li qub thiab kab axis;
6) Tom qab kev teeb tsa, thawb lub nplhaib txav ntawm tes kom lub nplhaib txav txav tau yooj yim ntawm tus ncej thiab muaj qee qhov kev ywj pheej;
7) Tom qab kev teeb tsa, tig lub rotating ncej ntawm tes.Lub rotating ncej yuav tsum tsis txhob hnov qab hnyav lossis hnyav;
8) Cov khoom siv yuav tsum tau ntim nrog cov xov xwm ua ntej ua haujlwm kom tsis txhob muaj kev sib txhuam qhuav thiab foob tsis ua haujlwm;
9) Txhawm rau kom yooj yim crystallized thiab granular media, thaum nruab nrab kub yog> 80OC, sib txuas dej ntws, lim, thiab ntsuas cua txias yuav tsum tau ua.Thov xa mus rau cov qauv txheej txheem ntawm cov tshuab ntsaws ruaj ruaj rau ntau yam khoom siv.
10).Thaum lub sij hawm installation, ib txheej ntawm cov neeg kho tshuab roj yuav tsum tau siv rau qhov chaw nyob rau hauv kev sib cuag nrog lubfoob.Kev saib xyuas tshwj xeeb yuav tsum tau them rau kev xaiv cov roj siv hluav taws xob rau cov khoom siv sib txawv sib txawv kom tsis txhob ua rau O-ring nthuav dav vim cov roj nkag los yog ua kom muaj kev laus, ua rau ntxov ntxov sealing.Tsis raug.
5. Peb lub ntsiab lus sealing yog dab tsi ntawm ib lub tshuab ntsaws ruaj ruaj, thiab cov qauv kev sib khi ntawm peb lub ntsiab lus sealing no yog dab tsi?
Covfoobnruab nrab ntawm lub nplhaib txav thiab lub nplhaib zoo li qub yog nyob ntawm lub caij nplooj ntoos hlav (caij nplooj ntoos hlav, lub tsho, thiab lwm yam) thiabsealing kuaLub siab los tsim kom muaj lub zog nias tsim nyog (qhov sib piv) ntawm qhov chaw sib cuag (lub ntsej muag kawg) ntawm lub nplhaib txav txav thiab lub nplhaib zoo li qub.Siab) ua rau ob lub ntsej muag du thiab ncaj kawg kom haum;ib tug nyias nyias zaj duab xis yog khaws cia nyob nruab nrab ntawm lub ntsej muag kawg kom ua tiav cov nyhuv sealing.Cov yeeb yaj kiab no muaj cov kua dej dynamic siab thiab lub siab zoo li qub, uas ua lub luag haujlwm ntawm kev ntsuas lub siab thiab lubricating lub ntsej muag kawg.Yog vim li cas vim li cas ob lub ntsej muag kawg yuav tsum ua kom du thiab ncaj yog tsim kom haum rau lub ntsej muag kawg thiab sib npaug ntawm qhov tshwj xeeb.Qhov no yog ib tug txheeb ze rotation foob.
6. Mechanical foobkev paub thiab hom tshuab foob tshuab
Tam sim no, ntau yam tshiabmechanical foobtechnologies uas siv cov ntaub ntawv tshiab thiab cov txheej txheem ua tau sai heev.Muaj cov tshiab hauv qab nomechanical foobtshuab.Sealing nto groovesealing tshuabNyob rau hauv xyoo tas los no, ntau yam grooves tau qhib rau ntawm qhov kawg ntawm lub ntsej muag ntawm cov tshuab ntsaws ruaj ruaj los tsim cov teebmeem hydrostatic thiab dynamic siab, thiab nws tseem tab tom hloov kho.Zero to sealing thev naus laus zis Yav dhau los, nws yeej ib txwm ntseeg tias kev sib cuag thiab tsis sib cuag cov tshuab foob tsis tuaj yeem ua tiav xoom xau (lossis tsis muaj to).Ixayees siv slotted sealing tshuab los tawm tswv yim tshiab ntawm xoom-leakage non-contact mechanical end face seals, uas tau siv hauv lubricating roj twj hauv nuclear fais fab nroj tsuag.Qhuav khiav roj sealing tshuab Hom foob no siv cov tshuab sealing tshuab rau roj sealing.Lub tshuab nqus dej twj tso kua mis sealing tshuab siv cov grooves ntws ntawm qhov chaw sib khi kom tso cov kua dej me me ntawm cov dej ntws rov qab mus rau sab saud.Cov yam ntxwv ntawm cov yam ntxwv saum toj no-hais ntawm cov ntsaws ruaj ruaj yog: lawv siv cov grooves ntiav, thiab cov yeeb yaj kiab thickness thiab qhov tob ntawm qhov groove yog ob qho tib si micron-theem.Lawv kuj siv lubricating grooves, radial sealing dams thiab circumferential sealing weirs los tsim cov sealing thiab load-bearing qhov chaw.Nws tseem tuaj yeem hais tau tias lub foob foob yog ib qho kev sib txuas ntawm lub tiaj tiaj thiab cov kabmob grooved.Nws qhov zoo yog qhov xau me me (lossis txawm tias tsis muaj qhov xau), cov yeeb yaj kiab loj tuab, tshem tawm kev sib txhuam, thiab siv hluav taws xob tsawg thiab ua npaws.Thermal hydrodynamic sealing tshuab siv ntau yam sib sib zog nqus sealing nto ntws grooves ua rau lub zos thermal deformation los tsim cov nyhuv hydrodynamic wedge.Hom kev foob nrog hydrodynamic siab bearing muaj peev xwm yog hu ua thermohydrodynamic wedge foob.
Bellows sealing thev naus laus zis tuaj yeem muab faib ua cov tshuab ua hlau thiab welded hlau tshuab tshuab sealing tshuab.
Multi-kawg sealing tshuab yog muab faib ua ob chav sealing, intermediate nplhaib sealing thiab multi-seal technology.Tsis tas li ntawd, muaj kev sib txuas ntawm qhov sib txuas thev naus laus zis, kev soj ntsuam sealing thev naus laus zis, kev sib xyaw ua ke thev naus laus zis, thiab lwm yam.
7. Mechanical foobkev paub, mechanical seal flushing scheme thiab cov yam ntxwv
Lub hom phiaj ntawm kev yaug dej yog tiv thaiv kom tsis txhob muaj cov impurities, tiv thaiv kev tsim ntawm lub hnab pa, tswj thiab txhim kho lubrication, thiab lwm yam. Thaum qhov kub thiab txias ntawm cov kua dej ntws tawm qis, nws kuj muaj qhov ua kom txias.Cov txheej txheem tseem ceeb ntawm kev yaug dej yog raws li hauv qab no:
1. Internal flushing
1. Kev nplawm zoo
(1) Nta: Lub kaw lus nruab nrab ntawm tus tswv tsev ua haujlwm yog siv los ua kom paub qhov sib khi chamber los ntawm qhov hluav taws xob kawg ntawm lub twj tso kua mis los ntawm cov kav dej.
(2) Daim Ntawv Thov: siv los ntxuav cov kua dej.P1 yog me ntsis loj dua P. Thaum qhov kub thiab txias los yog muaj impurities, txias, lim, thiab lwm yam tuaj yeem ntsia tau rau hauv cov kav dej.
2. Rov qab ntxuav
(1) Nta: Lub kaw lus nruab nrab ntawm tus tswv tsev ua haujlwm tau nkag mus rau hauv chav sib khi los ntawm qhov hluav taws xob kawg ntawm lub twj tso kua mis, thiab ntws rov qab mus rau lub twj tso kua mis nkag los ntawm cov kav dej tom qab dej ntws tawm.
(2) Daim Ntawv Thov: siv los ntxuav cov kua dej, thiab P nkag mus rau 3. Puv flush
(1) Nta: Lub kaw lus nruab nrab ntawm tus tswv tsev ua haujlwm yog siv los qhia lub sealing chamber los ntawm lub qhov hluav taws xob kawg ntawm lub twj tso kua mis los ntawm cov kav dej, thiab tom qab ntawd ntws rov qab mus rau lub twj tso kua mis nkag los ntawm lub raj xa dej tom qab dej ntws tawm.
(2) Daim Ntawv Thov: Cov nyhuv txias yog zoo dua li thawj ob, siv los ntxuav cov kua dej, thiab thaum P1 ze rau P hauv thiab P tawm.
2. External scour
Nta: Qhia cov kua dej huv los ntawm cov txheej txheem sab nraud uas sib haum nrog lub kaw lus nruab nrab rau lub foob kab noj hniav kom yaug.
Daim ntawv thov: Cov dej ntws tawm sab nraud yuav tsum yog 0.05--0.1MPA ntau dua li qhov nruab nrab kaw.Nws yog qhov tsim nyog rau cov xwm txheej uas qhov nruab nrab yog qhov kub thiab txias los yog muaj cov khoom siv.Tus nqi ntws ntawm cov kua dej ntws tawm yuav tsum xyuas kom meej tias cov cua sov tau muab tshem tawm, thiab nws yuav tsum tau ua kom tau raws li qhov xav tau ntawm cov dej ntws tawm yam tsis ua kom yaig ntawm cov ntsaws ruaj ruaj.Rau qhov kawg no, lub siab ntawm lub foob chamber thiab tus nqi ntws ntawm cov dej ntws yuav tsum tau tswj.Feem ntau, tus nqi ntws ntawm cov kua dej huv yuav tsum tsawg dua 5M / S;Cov kua slurry uas muaj cov khoom yuav tsum tsawg dua 3M / S.Txhawm rau kom ua tiav tus nqi ntws saum toj no, cov kua dej ntws tawm thiab cov kab sib txuas yuav tsum yog qhov sib txawv ntawm qhov siab yuav tsum yog <0.5MPA, feem ntau 0.05--0.1MPA, thiab 0.1--0.2MPa rau ob-kawg mechanical seals.Txoj hauj lwm ntawm lub qhov ncauj rau cov kua dej ntws tawm mus rau hauv thiab tawm ntawm qhov sib khi yuav tsum tau teem ib ncig ntawm lub ntsej muag lub ntsej muag thiab ze rau ntawm lub nplhaib txav.Txhawm rau tiv thaiv lub nplhaib graphite los ntawm eroded los yog deformed los ntawm qhov sib txawv ntawm qhov kub thiab txias vim tsis sib xws, nrog rau impurity tsub zuj zuj thiab coking, thiab lwm yam., Tangential introduction los yog multi-point flushing yuav siv tau.Yog tias tsim nyog, cov kua dej ntws tawm tuaj yeem yog dej kub lossis chav dej.
Post lub sij hawm: Oct-31-2023