Dab tsi yog ib qholub foob ntawm lub twj tso kua mis?
Cov foob ntawm lub qag tiv thaiv cov kua dej kom tsis txhob tawm ntawm lub qag uas tig los yog rov qab. Qhov no tseem ceeb rau txhua lub twj tso kua mis thiab hauv cov twj tso kua mis centrifugal muaj ntau txoj kev xaiv foob: cov foob pob, cov foob ntawm daim di ncauj, thiab txhua hom foob tshuab - ib qho, ob qho thiab tandem suav nrog cov foob cartridge. Cov twj tso kua mis rotary zoo li cov twj tso kua mis iav thiab cov twj tso kua mis vane muaj nrog cov foob pob, daim di ncauj thiab kev npaj foob tshuab. Cov twj tso kua mis rov qab ua rau muaj teeb meem foob sib txawv thiab feem ntau vam khom cov foob pob lossis cov foob pob. Qee qhov kev tsim, xws li cov twj tso kua mis tsav hlau nplaum, cov twj tso kua mis diaphragm lossis cov twj tso kua mis peristaltic, tsis tas yuav tsum muaj foob ntawm lub qag. Cov twj tso kua mis hu ua 'sealless' no suav nrog cov foob ruaj khov kom tiv thaiv cov kua dej xau.
Cov hom foob tseem ceeb ntawm lub twj tso kua mis yog dab tsi?
Ntim khoom
Kev ntim khoom (tseem hu ua kev ntim khoom ntawm lub qhov (shaft packing) lossis kev ntim khoom ntawm lub qhov (gland packing) muaj cov khoom mos mos, uas feem ntau yog braided lossis ua rau hauv cov nplhaib. Qhov no raug nias rau hauv ib lub chamber nyob ib ncig ntawm lub qhov drive shaft hu ua lub stuffing box los tsim ib lub foob (Daim Duab 1). Feem ntau, kev nias yog siv rau ntawm lub qhov packing tab sis nws kuj tuaj yeem siv rau ntawm lub radial los ntawm lub hydraulic medium.
Ib txwm muaj, kev ntim khoom yog ua los ntawm tawv, hlua lossis paj rwb tab sis tam sim no feem ntau muaj cov khoom siv inert xws li PTFE nthuav dav, graphite compressed, thiab granulated elastomers. Kev ntim khoom pheej yig thiab feem ntau siv rau cov kua tuab, nyuaj rau kaw xws li resins, tar lossis adhesives. Txawm li cas los xij, nws yog ib txoj kev kaw tsis zoo rau cov kua nyias nyias, tshwj xeeb tshaj yog thaum muaj kev nyuaj siab dua. Kev ntim khoom tsis tshua ua haujlwm tsis zoo, thiab nws tuaj yeem hloov pauv sai sai thaum lub sijhawm kaw.
Cov foob pob khoom yuav tsum tau siv roj nplua nyeem kom tsis txhob muaj cua sov sib txhuam. Qhov no feem ntau yog los ntawm cov kua uas tau pumped nws tus kheej uas feem ntau xau me ntsis los ntawm cov khoom ntim khoom. Qhov no tuaj yeem ua rau qias neeg thiab yog tias muaj cov kua uas lwj, yooj yim hlawv, lossis lom feem ntau tsis tuaj yeem lees txais. Hauv cov xwm txheej no, yuav tsum siv cov roj nplua nyeem sab nraud uas muaj kev nyab xeeb. Kev ntim khoom tsis haum rau cov twj kaw khoom siv rau cov kua uas muaj cov khoom me me uas ua rau puas tsuaj. Cov khoom khov tuaj yeem nkag mus rau hauv cov khoom ntim khoom thiab qhov no yuav ua rau lub qhov twj lossis phab ntsa ntawm lub thawv ntim khoom puas tsuaj.
Cov ntsaws ruaj ntawm daim di ncauj
Cov Ntiv Tes Lip, tseem hu ua cov ntiv tes radial, tsuas yog cov khoom elastomeric puag ncig uas tau tuav rau hauv qhov chaw tiv thaiv lub qag tsav los ntawm lub tsev sab nraud (Daim Duab 2). Lub foob tshwm sim los ntawm kev sib txhuam ntawm 'ntiv tes' thiab lub qag thiab qhov no feem ntau tau txhawb nqa los ntawm lub caij nplooj ntoo hlav. Cov ntiv tes lip yog ib txwm muaj thoob plaws hauv kev lag luam hydraulic thiab tuaj yeem pom ntawm cov twj tso kua mis, cov cav tov hydraulic, thiab cov actuators. Lawv feem ntau muab qhov thib ob, thaub qab foob rau lwm cov txheej txheem sealing xws li cov ntsaws ruaj ruaj kho tshuab Cov ntiv tes lip feem ntau txwv rau qhov siab qis thiab kuj tsis zoo rau cov kua nyias nyias, tsis muaj lubricating. Ntau lub kaw lus foob tau siv tau zoo tiv thaiv ntau yam kua viscous, tsis muaj abrasive. Cov ntiv tes lip tsis haum rau kev siv nrog cov kua abrasive lossis cov kua uas muaj cov khoom khov vim lawv yooj yim hnav thiab txhua qhov kev puas tsuaj me me tuaj yeem ua rau tsis ua haujlwm.
Cov ntsaws ruaj ruaj
Cov foob pob hluav taws xob feem ntau muaj ib lossis ntau khub ntawm cov ntsej muag tiaj tiaj, ci ntsa iab heev, ib qho nyob ruaj khov hauv lub tsev thiab ib qho tig, txuas nrog lub qag tsav (Daim Duab 3). Cov ntsej muag xav tau lubrication, los ntawm cov kua pumped nws tus kheej lossis los ntawm cov kua thaiv. Qhov tseeb, cov ntsej muag foob tsuas yog sib cuag thaum lub twj tso kua mis so. Thaum siv, cov kua lubricating muab ib daim zaj duab xis nyias nyias, hydrodynamic ntawm cov ntsej muag foob tawm tsam, txo qhov hnav thiab pab kom sov tawm.
Cov foob pob hluav taws xob tuaj yeem tswj tau ntau yam kua, viscosities, pressures, thiab kub. Txawm li cas los xij, lub foob pob hluav taws xob yuav tsum tsis txhob khiav qhuav. Ib qho txiaj ntsig tseem ceeb ntawm cov txheej txheem foob pob hluav taws xob yog tias lub qag tsav thiab lub plhaub tsis yog ib feem ntawm lub tshuab foob (zoo li qhov teeb meem nrog cov ntim khoom thiab cov foob pob hluav taws xob) thiab yog li ntawd tsis raug hnav.
Ob chav foob
Cov foob ob chav siv ob lub foob tshuab uas muab tso rau sab nraub qaum (Daim Duab 4). Qhov chaw sab hauv ntawm ob pawg ntawm lub ntsej muag foob tuaj yeem raug nias hydraulically nrog cov kua thaiv kom cov zaj duab xis ntawm lub ntsej muag foob tsim nyog rau kev nplua yuav yog cov kua thaiv thiab tsis yog cov khoom siv uas raug pumped. Cov kua thaiv kuj yuav tsum sib xws nrog cov khoom siv pumped. Cov foob ob chav nyuaj dua rau kev ua haujlwm vim qhov xav tau kev nias thiab feem ntau tsuas yog siv thaum nws tsim nyog los tiv thaiv cov neeg ua haujlwm, cov khoom sab nraud thiab ib puag ncig los ntawm cov kua phom sij, tshuaj lom lossis cov kua hluav taws xob.
Cov ntsaws ruaj ruaj Tandem
Cov foob tandem zoo ib yam li cov foob ob chav tab sis ob pawg ntawm cov foob mechanical tig mus rau tib qho kev taw qhia es tsis yog rov qab mus rau tom qab. Tsuas yog lub foob sab ntawm cov khoom tig hauv cov kua dej uas tau pumped tab sis kev ntws hla cov ntsej muag foob thaum kawg ua rau cov roj nplua nyeem tsis huv. Qhov no muaj qhov tshwm sim rau lub foob sab huab cua thiab ib puag ncig.
Cov ntsaws ruaj ruaj
Lub foob pob yog ib pob khoom ua ntej sib dhos ua ke ntawm cov khoom siv foob pob. Kev tsim lub foob pob tshem tawm cov teeb meem kev teeb tsa xws li qhov xav tau ntsuas thiab teeb tsa lub caij nplooj ntoos hlav compression. Cov ntsej muag foob kuj tseem tiv thaiv kev puas tsuaj thaum lub sijhawm teeb tsa. Hauv kev tsim qauv, lub foob pob tuaj yeem yog ib qho, ob npaug lossis tandem teeb tsa uas muaj nyob hauv lub qog thiab ua rau ntawm lub tes tsho.
Cov roj thaiv kev sib txuas.
Cov no yog cov rooj zaum ob lub thawv uas muaj ob sab uas tsim los kom muaj cua siab siv cov roj inert ua ib qho thaiv, hloov cov kua roj nplua nyeem ib txwm muaj. Cov ntsej muag foob yuav raug sib cais lossis tuav kom xoob thaum lub sijhawm ua haujlwm los ntawm kev kho qhov cua siab ntawm cov roj. Ib qho me me ntawm cov roj yuav tawm mus rau hauv cov khoom thiab huab cua.
Kev Txheeb Xyuas
Cov foob ntawm lub qag tiv thaiv cov kua dej tawm ntawm lub twj tso kua mis lub qag uas tig lossis rov qab. Feem ntau yuav muaj ntau txoj kev xaiv foob: cov khoom ntim, cov foob ntawm daim di ncauj, thiab ntau hom foob tshuab - ib qho, ob qho thiab tandem suav nrog cov foob cartridge.
Lub sijhawm tshaj tawm: Tsib Hlis-18-2023