Daim ntawv thovble Flygt Pump Models ntawm Cov Mechanical Foob:
● 3127 (Twj)
● 4440 (Mixer)
● 5530 (Twj)
● 3126.090,181,280&290
* Kom tau txais cov nqi tshiab & cov ntaub ntawv ntau ntxiv txog Flygt Pump Seals, thov hu rau Uttox Mechanical Seals los ntawm E-mail lossis Whatsapp.
● Whatsapp: ntxiv rau 86-13656834410
*Kev Taw Qhia Txog *
Kev Tshawb Fawb Txog Kev Txhim Kho ntawm Mechanical Seal Mechanism
Rau cov neeg kho tshuab seals, cov kev xav uas tsim cov nyhuv sealing yog muab faib ua ob pawg, uas yog, qhov kev xav ntawm qhov nro thiab lub zog viscous hypothesis. Qhov kev xav ntawm qhov nro yog thawj zaug los ntawm A Brkich. Lub hypothesis lees paub
Qhov ruaj khov thiab txhim khu kev qha ntawm lub ntsej muag kawg yog qhov tshwm sim ntawm qhov nro ntawm qhov chaw. Lub ntsej muag kawg ntawm lub foob yog qhov tseeb tsis yog lub dav hlau du zoo tagnrho, thiab qee qhov me me ntawm qhov sib txuas yog nyob rau hauv kev sib cuag ncaj qha. GE Rajakovics siv cov kev sim los tham txog qhov pom tias qhov nro ntawm qhov chaw yog qhov tseem ceeb hauv kev sib khi. Nyob rau tib lub sijhawm, kev tawm tsam rau qhov kev xav viscous tau raug tsa: ① Viscosity (tsuas yog hais txog qhov adhesion ntawm cov kua thiab cov khoom nto) tsuas yog ua haujlwm thaum qhov sib txawv yog 10-9m lossis tsawg dua, thiab tsis ua haujlwm hauv micron- qib sealing qhov sib txawv; ② Viscosity yog lub zog muaj zog, thiab thaum lub foob yog xoom xoom, tsis muaj lub zog nyob rau hauv cov kev taw qhia radial
Kev kawm. Li Keyong thiab lwm tus neeg hauv tebchaws kuj pom zoo nrog qhov kev xav ntawm qhov nro.
P Basu, E Schwaiger thiab UW Senfert, thiab lwm yam. ntseeg hais tias cov yeeb yaj kiab ua kua ntawm qhov chaw sib khi ua haujlwm zoo li lub gasket muag. Lub zog molecular ntawm cov kua molecules nce nrog qhov nce hauv viscosity, thiab txo qis nrog qhov nce ntawm qhov sib khi. J Digard thiab M Genhle, thiab lwm yam nyob rau hauv lub low-pressure mechanical seal lubricating state
Hauv kev sim kev tshawb fawb ntawm tus mob, nws tau pom tias muaj qhov nro hauv cov yeeb yaj kiab ua kua. Thaum lub sij hawm sealing, lub siab sensor ntsuas lub siab nyob rau hauv lub theem hloov cheeb tsam thiab lub nro nyob rau hauv lub theem hloov chaw ua ntej cov kua zaj duab xis so. Raws li qhov tseeb tias muaj cavitation thiab vaporization nyob rau hauv lub ntsej muag kawg, J Digard thiab M Genhle ntseeg hais tias qhov tsim ntawm ntau qhov chaw nro los ntawm ntau theem huab cua sib txawv yog qhov laj thawj tseem ceeb rau kev txhim kho tag nrho cov sealing muaj peev xwm.
Txawm li cas los xij, qhov kev xav viscous uas sawv cev los ntawm EF Boon ntseeg tias qee cov kua molecules tau daig rau ntawm qhov chaw sib khi vim muaj viscosity. Lub zog viscous no tau tsim nyob rau hauv qhov sib txawv ntawm qhov sib txawv vim qhov sib txawv ntawm qhov siab tuaj yeem tiv thaiv cov pa tawm ntawm qhov nruab nrab. Hauv tsev Zheng Haiquan thiab Chen Ruzhuo tau qhia txog cov kev txwv ntawm qhov kev xav ntawm qhov nro ntawm sab nraud: ①Qhov siab tshaj plaws sealing muaj peev xwm xam raws li qhov nro saum npoo yog me heev. Rau cov dej uas muaj qhov nro loj, qhov sib khi sib khi yog 1μm hauv qhov xwm txheej ib txwm muaj. Qhov siab tshaj plaws sealing muaj peev xwm tsawg dua 0.15MPa. Txhawm rau txiav txim siab qhov cuam tshuam ntawm ntau yam, tus nqi kho dua yuav me dua. Qhov ua rau, qhov xwm txheej, cov duab, kev faib tawm, thiab lwm yam ntawm qhov tshwm sim cavitation tseem tsis tau meej meej, thiab qhov tshwm sim cavitation tsis tshwm sim thaum lub foob nyob rau hauv so, yog li nws tsis tuaj yeem piav qhia qhov tseeb tias tseem muaj peev xwm sealing siab thaum so. ; ②Qhov kev xav ntawm qhov nro yuav tsum yog Leakage yog qhov yuav tsum tau ua ua ntej, thaum nws xau, nws yuav luag tag nrho nws lub peev xwm sealing. Vim tias cov dej xau tsis yog tsuas yog txo lub kaum sab xis ntub dej, tshwj xeeb tshaj yog cov duab meniscus thiab cov ntaub ntawv sib xws ntawm cov yeeb yaj kiab tuab hloov pauv hauv cov kev taw qhia ntawm kev txo lub peev xwm sealing, lub peev xwm sealing yuav txo qis. Qhov no tsis tsuas yog tsis tuaj yeem piav qhia qhov xwm txheej tiag tiag ntawm kev xau ntau lossis tsawg dua hauv cov ntsaws ruaj ruaj, tab sis kuj tsis tuaj yeem piav qhia lub peev xwm sib khi ntawm ntau lub ntsej muag cov ntsaws ruaj ruaj nrog cov kua hauv thiab sab nraud sealing nto.
E Mayer tau tshuaj xyuas txoj haujlwm ntawm viscosity hauv cov txheej txheem ntawm cov tshuab foob los ntawm ntau qhov kev sim. Raws li lub zog viscous hypothesis, tib neeg tau kawm thiab sib tham txog lub xeev lubrication ntawm lub ntsej muag kawg ntawm lub tshuab foob. Mayer ntseeg hais tias ntawm kev sib txhuam ntawm cov khoom siv sib txuas zoo tib yam, cov yeeb yaj kiab ua kua nyias, qhov sib npaug ntawm cov kua Newtonian.
Tsis muaj kev siv tau zoo. Hauv cov khoom siv sib txuas zoo tib yam, ib txwm muaj kev sib cuag ntawm lub ntsej muag kawg ntawm kev sib txhuam, tsim ntau qhov sib txawv uas tsis tshua muaj kev sib txuas. Thaum ob lub rings tig txheeb ze rau ib leeg, cov kua hloov los ntawm ib qho kev sib txawv mus rau lwm qhov sib txawv, kom txog rau thaum cov kua qhov taw tes mus txog. Txog thaum kawg ntawm qhov sib txawv, lub ntsej muag kawg ntawm lub foob yog nyob rau hauv ciam teb lubrication xeev. Golubev, Summers-Smith, thiab domestic Gu Yongquan, Wang Rumei, thiab lwm yam ntseeg hais tias zoo tib yam mechanical seals nyob rau hauv qhov tseeb ua hauj lwm yog feem ntau nyob rau hauv lub xeev ntawm tov lubrication. Cov nyhuv hydrostatic siab thiab cov nyhuv hydrodynamic ua haujlwm sib txawv hauv cov txheej txheem ntawm kev tsim cov yeeb yaj kiab ua kua. Txawm li cas los xij, AO Lebeak tau taw qhia nyob rau hauv tsab xov xwm "Waviness Prediction, Kev Ntsuas, Ua rau thiab Cov Teeb Meem ntawm Lub Ntsej Muag Kawg" tias cov ntsej muag zoo tib yam ua haujlwm hauv cov xov xwm aqueous tsis tsim cov teebmeem hydrodynamic siab, uas ua rau tib neeg mus rau thaj tsam ntawm cov khoom siv foob. Rov nkag siab txog hybrid lubrication txoj kev xav uas occupies ib qho tseem ceeb txoj hauj lwm.
Nws tuaj yeem pom tau tias cov txheej txheem ntawm kev sib tsoo tshuab tseem tsis tau lees paub los ntawm tib neeg raws li kev ua tiav kev sib khi. Txawm li cas los xij, tib neeg tseem tab tom tshawb nrhiav tsis tu ncua, vim tias txhua kauj ruam ntawm kev tshawb nrhiav thiab cov kev xav lossis cov lus xaus tau muab los ntawm kev ua lub luag haujlwm tseem ceeb hauv kev tsim, tsim khoom thiab siv cov khoom siv foob.
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