Npauj npaim li qub yog lub quarter-tig ntws tswj cov khoom siv uas siv cov hlau disc uas tig ib ncig ntawm lub qia ruaj khov.
Thaum lub disc yog perpendicular mus rau lub centerline ntawm cov yeeb nkab, lub valve yog nyob rau hauv lub kaw txoj hauj lwm.Thaum lub disc yog parallel mus rau lub centerline ntawm cov yeeb nkab, lub valve yuav qhib tag nrho (tso cai rau cov kua dej ntau tshaj). tswj mechanism (disk) yog kwv yees li ntawm qhov sib npaug ntawm lub puab kab ntawm cov yeeb nkab uas nyob ib sab.
Cov li qub no tuaj nyob rau hauv ntau qhov sib txawv thiab cov qauv tsim uas txiav txim siab lawv cov kev ua tau zoo hauv cov txheej txheem kev siv; kev siv tshuaj ntxuav tes valve; kev pabcuam hluav taws; cua sov, qhov cua, thiab cua txias (HVAC) systems; thiab slurries.Hais lus dav dav, npauj npaim li qub yog qhov tseem ceeb rau kev khiav dej num thiab kev cais tawm.
Lub zog ntawm lub disc pib, qeeb lossis nres cov dej ntws.Cov ntaub ntawv uas xav tau siab precision cia siab rau actuated npauj npaim li qub uas saib xyuas cov raj xa dej, qhib lossis kaw lub valve raws li qhov tsim nyog los tswj kom muaj qhov sib txawv ntawm qhov sib txawv. Npauj npaim li qub siv rau kev tswj xyuas muaj ib tug ntawm cov nram qab no flow yam ntxwv:
"Zoo li linear - tus nqi ntws yog proportional rau lub angular motion ntawm lub disc.Piv txwv li, thaum lub disc yog 40% qhib, qhov ntws yog 40% ntawm qhov siab tshaj plaws.Qhov kev txaus ntshai no muaj nyob rau hauv kev ua haujlwm siab npauj npaim li qub.
"Fais qhib - Cov yam ntxwv ntws no tau nthuav tawm thaum siv lub rooj zaum npauj npaim li qub. Cov kua dej ntws tau siab tshaj plaws thaum lub disc txav los ntawm qhov chaw kaw.Raws li lub valve mus txog qhov chaw qhib tag nrho, cov dej ntws tsis tu ncua nrog kev hloov me ntsis.
"Flow Isolation - Npauj Npaim li qub tuaj yeem muab kev pabcuam rau / tawm kua.Flow cais yuav tsum tau thaum twg qee qhov ntawm cov kav dej xav tau kev saib xyuas.
Npauj npaim li qub yog tsim rau cov kev siv sib txawv vim lawv lub teeb yuag tsim thiab ua haujlwm ceev.Soft-seated npauj npaim li qub yog qhov zoo tagnrho rau qhov kub thiab txias, tsis tshua muaj siab siv, thaum hlau-seated npauj npaim li qub muaj peev xwm sealing zoo thaum tuav cov dej hnyav.Cov txheej txheem no ua haujlwm. ntawm qhov kub thiab txias siab thiab conveys viscous lossis corrosive fluids.Qhov zoo ntawm npauj npaim li qub muaj xws li:
"Lub teeb yuag thiab kev tsim khojButterfly li qub siv cov hlau nyias nyias raws li cov txheej txheem tswj kev khiav dej num. Cov discs me me thiab siv qhov chaw me me, tab sis muaj zog txaus los tswj cov dej ntws.Cov li qub no muaj lub cev compact ua rau lawv haum rau siv hauv cov kav dej. systems nyob rau hauv qhov chaw nqaim. Cov kav dej loj loj yuav tsum muaj cov khoom siv loj dua uas siv cov khoom siv ntau dua, cov nqi nce ntxiv.A npauj npaim valve yuav tsis tshua kim dua li lub pob valve ntawm tib qhov loj vim tias nws siv cov khoom siv tsawg dua los tsim.
"Fais thiab Efficient Sealing - Npauj Npaim li qub muab ceev ceev sealing ntawm actuation, ua rau lawv zoo tagnrho rau high precision flow applications.Qhov sealing yam ntxwv ntawm npauj npaim valve nyob ntawm seb hom disc offset thiab qhov xwm ntawm lub rooj zaum khoom.A xoom offset npauj npaim valve yuav muab kev sib khi kom txaus rau cov ntawv thov tsis tshua muaj siab - txog li 250 phaus ib square inch (psi).Ob lub offset valve muab kev sib khi zoo heev rau cov txheej txheem txog li 1,440 psi.Triple offset li qub muab sealing rau cov ntawv thov ntws tshaj 1,440 psi.
"Tsis tshua muaj siab poob thiab siab siab rov qab - Npauj npaim li qub muaj qhov tsis tshua muaj siab poob txawm tias lub disc yeej ib txwm muaj nyob rau hauv cov kua. Tsis tshua muaj siab poob yog qhov tseem ceeb rau kev tswj cov twj thiab lub zog xav tau ntawm lub cev. Npauj npaim li qub yog tsim los tso cai. dej kom rov qab tau lub zog sai sai tom qab nws tawm ntawm lub valve.
"Kev saib xyuas tsis tshua muaj - Npauj npaim li qub muaj tsawg dua cov khoom siv sab hauv.Lawv tsis muaj hnab tshos uas tuaj yeem ntes cov kua lossis cov khib nyiab, yog li ntawd, lawv yuav tsum muaj kev saib xyuas tsawg kawg nkaus.Lawv kev teeb tsa yog yooj yim li lawv xav tau clamping ntawm cov yeeb nkab flanges uas nyob ib sab. Tsis muaj txheej txheem installation nyuaj. xws li vuam yog yuav tsum tau.
"Kev Ua Haujlwm Yooj Yim - Vim lawv qhov loj me thiab lub teeb yuag, npauj npaim li qub yuav tsum muaj lub zog qis rau kev ua haujlwm. Nyias hlau discs siv lub zog me me los kov yeej cov kev sib txhuam ntawm cov kua dej. Npauj npaim li qub yog yooj yim rau automate vim me me actuators tau muab lub zog txaus rau lawv txoj haujlwm.Qhov no txhais ua cov nqi qis dua - cov actuators me dua siv lub zog tsawg dua thiab raug nqi tsawg dua ntxiv rau lub valve.
" Npauj npaim li qub yog raug rau cavitation thiab thaiv ntws - nyob rau hauv qhib txoj hauj lwm, lub valve tsis muab ib tug tag nrho chaw nres nkoj.Qhov muaj cov disc nyob rau hauv cov dej ntws txoj kev exacerbates lub buildup ntawm cov khib nyiab nyob ib ncig ntawm lub valve, ua rau lub peev xwm rau cavitation. Pob li qub yog lwm txoj hauv kev rau cov dej siv uas xav tau cov chaw nres nkoj puv.
"Rau nrawm nrawm hauv cov kev pabcuam dej khov - cov kua dej ntws tawm npauj npaim li qub thaum lawv ntws los ntawm lawv. Thaum lub sij hawm, cov discs deteriorate thiab tsis muaj peev xwm muab tau ib lub foob lawm. Corrosion tus nqi yuav siab dua yog tias tuav cov kev pabcuam viscous.Gate thiab pob li qub tau zoo dua corrosion. tsis kam tshaj npauj npaim li qub.
"Tsis haum rau kev kub siab throttling - lub valve yuav tsum tsuas yog siv rau throttling nyob rau hauv tsis tshua muaj siab daim ntaub ntawv, txwv rau 30 degrees rau 80 degrees ntawm qhib. Globe li qub muaj peev xwm throttling zoo dua npauj npaim li qub.
Lub valve nrov plig plawg nyob rau hauv txoj hauj lwm qhib tag nrho tiv thaiv kev ntxuav ntawm lub cev thiab tiv thaiv pigging ntawm kab uas muaj cov npauj npaim valve.
Lub installation txoj hauj lwm ntawm npauj npaim valve feem ntau yog nruab nrab ntawm flanges. Npauj npaim li qub yuav tsum tau nruab yam tsawg kawg yog plaub mus rau rau lub yeeb nkab diameters los ntawm kev tso tawm nozzles, lub luj tshib, los yog ceg ntoo kom txo tau qhov cuam tshuam ntawm turbulence.
Ua ntej kev teeb tsa, ntxuav cov kav dej thiab xyuas cov flanges kom smoothness/flatness.Ua kom cov kav dej zoo sib xws.Thaum txhim kho lub valve, khaws cov disc nyob rau hauv ib nrab qhib txoj hauj lwm.Flanges yuav tsum tau nthuav dav kom tsis txhob muaj kev puas tsuaj rau lub rooj zaum saum npoo.Siv tsav Cov qhov los yog cov hlua nyob ib ncig ntawm lub valve lub cev thaum nqa lossis txav lub valve.Tsis txhob nqa lub valve ntawm tus actuator lossis nws tus neeg teb xov tooj.
Teem lub valve nrog lub ntxig ntsia liaj qhov rooj ntawm cov yeeb nkab uas nyob ib sab. Tes tuav lub bolts, ces siv lub torque ciaj ntswj kom nruj cov bolts maj mam thiab tusyees los kwv yees qhov clearance ntawm lawv thiab lub flange.Tig lub valve mus rau lub siab qhib txoj hauj lwm thiab siv a torque ciaj ntswj kom nruj cov bolts los xyuas seb qhov nro ntawm lub bolts.
Kev saib xyuas ntawm cov li qub suav nrog lubrication ntawm cov khoom siv tshuab, tshuaj xyuas thiab kho cov actuators.Valves uas yuav tsum tau lubrication ib ntus muaj xws li cov roj ntsha fittings.Rau lithium-raws li roj yuav tsum tau siv rau lub sijhawm pom zoo kom txo qis xeb thiab xeb.
Nws tseem yog ib qho tseem ceeb kom tsis tu ncua xyuas tus actuator kom paub cov cim ntawm hnav lossis xoob hluav taws xob, pneumatic lossis hydraulic kev sib txuas uas yuav cuam tshuam rau kev ua haujlwm valve.
Tsis tas li ntawd, tus neeg siv yuav tsum tau ntxuav tag nrho cov seem ntawm npauj npaim valve nrog cov roj nplaum silicone.Lub rooj zaum yuav tsum tau kuaj xyuas cov cim ntawm kev hnav thiab hloov yog tias tsim nyog. Npauj Npaim valve discs siv rau hauv cov ntawv thov qhuav xws li compressed cua pab yuav tsum tau lubrication. Npauj npaim li qub uas lub voj voog tsis tshua muaj yuav tsum tau ua haujlwm tsawg kawg ib hlis ib zaug.
Kev xaiv valve yuav zoo li kev xaiv thiab mating kev ua ub no, tab sis muaj ntau yam kev qhia tshwj xeeb los txiav txim siab. Thawj qhov yuav tsum nkag siab txog hom kev tswj cov kua dej uas yuav tsum tau ua thiab hom kev pabcuam cov kua dej.Corrosive fluid cov kev pabcuam xav tau li qub ua los ntawm stainless hlau, nichrome, lossis lwm cov ntaub ntawv corrosion-resistant.
Cov neeg siv yuav tsum xav txog lub peev xwm, siab thiab qhov kub thiab txias hloov ntawm cov kav dej thiab cov theem ntawm automation yuav tsum tau.While actuated npauj npaim li qub muab kev tswj kom meej, lawv kim dua li lawv cov khoom siv tes ua haujlwm. Npauj npaim li qub tsis tuaj yeem tswj tau thiab tsis muab ib qhov chaw nres nkoj puv.
Yog tias tus neeg siv tsis paub meej txog cov tshuaj sib raug zoo ntawm cov txheej txheem lossis kev xaiv ua haujlwm, lub tuam txhab valve tsim nyog tuaj yeem pab ua kom muaj kev xaiv raug.
Gilbert Welsford Jr. yog tus tsim ntawm ValveMan thiab tus neeg ua lag luam thib peb Valve.Yog xav paub ntxiv, mus saib Valveman.com.
Post lub sij hawm: Mar-02-2022
