Tus maub los qhia koj kom daws tau yooj yim nrog cov xau ntawmregulating valvenyob rau hauv cov roj refining unit
Paub meej: Kev xaiv ntawm kev tswj lub valve yog ib qho kev ua haujlwm zoo heev, tsis yog tsuas yog muaj kev paub txog kev txawj ntse, tab sis kuj muaj kev paub txog kev ua haujlwm zoo.
Kev xaiv zoo tsis yog tsuas yog muaj txiaj ntsig zoo los kho PID cov kev txwv ntawm kev tswj lub voj voog, kom cov kev hloov kho tau txais txiaj ntsig zoo dua, tab sis kuj ua rau kev pabcuam lub neej ntawm lub valve nce.
Daim ntawv no luv luv qhia txog qhov muaj pes tsawg leeg thiab xaiv txoj kev tswj valve. Cov lus tseem ceeb: kev tswj lub valve muaj pes tsawg leeg xaiv cov twj tso kua mis tswj koj qhia yooj yim los daws cov roj refining unit tswj valve to
Taw qhia: Regulating valve yog ib qho tseem ceeb ntawm cov khoom siv petrochemical refining, kev siv cov kev tswj valve ntau yam, cov xov tooj loj, cov khoom siv tshuaj lom neeg yog corrosive, tshuaj lom los yog flammable thiab tawg, thaum tswj valve to, tsis tsuas yog yuav ua rau loj pov tseg ntawm raw cov ntaub ntawv. , lub zog thiab cov khoom lag luam, tab sis kuj ua rau muaj kev cuam tshuam loj rau ib puag ncig, thiab tseem ua rau muaj kev nyab xeeb loj heev. Yog li ntawd, peb tau tham txog qhov xau ntawm cov tswj valve hauv cov txheej txheem petrochemical ntau lawm.
1. Ua rau kev tsom xam ntawm kev xau ntawm regulating valve
Feem ntau, muaj ob txoj hauv kev los kho lub valve to, uas yog sab nraud to thiab sab hauv to. Nyob rau hauv cov ntsiab lus hauv qab no, tus sau ua ib qho kev soj ntsuam ntxaws ntawm cov laj thawj rau sab nraud to thiab sab hauv to ntawm lub regulating valve.
Ua rau kev tsom xam ntawm 01 tswj valve sab nraud to
Qhov ua rau ntawm lub cev tawm ntawm lub cev: lub valve lub cev feem ntau yog cam khwb cia, yooj yim rau cov xuab zeb qhov thiab lwm yam tsis xws luag, cov xuab zeb qhov ntawm lub valve lub cev yuav ua rau cov pa tawm ntawm qhov nruab nrab, qhov to yog feem ntau manifested li to, ntws. me me, los ntawm kev kuaj hydraulic tuaj yeem pom.
Yog vim li cas rau lub valve qia to: tsis tsim nyog tsim thiab xaiv cov khoom ntawm lub valve qia yuav ua rau lub valve qia yuav daig nyob rau hauv ib txoj hauj lwm, thiaj li hais tias lub valve tsis tuaj yeem kaw los yog kaw xoob, ua rau nruab nrab to.
Yog vim li cas rau qhov kev sib txuas ntawm lub valve lub cev: peb feem ntau hais tias kev sib khi ntawm lub valve lub cev kev sib txuas ib feem tiag yog hais txog kev sib txuas thiab kev sib khi ntawm lub valve lub cev thiab lub valve cover. Feem ntau, lub sealing hom ntawm lub valve lub cev thiab lub valve cover yog flange kev twb kev txuas sealing; Txawm li cas los xij, thaum lub nominal txoj kab uas hla ntawm lub regulating valve yog me me, nws yog ib qhov tsim nyog yuav tau txais cov threaded kev twb kev txuas sealing txoj kev. Hauv ob txoj kev sib khi no, yog tias hom gasket tsis tsim nyog, qhov zoo ntawm cov khoom tsis yog raws li tus qauv, qhov loj ntawm cov khoom tsis nyob rau hauv txoj kab nrog kev sib khi, thiab kev ua haujlwm zoo ntawm flange sealing nto yog pluag. , qhov nruj ntawm cov xov txuas thiab qhov nruj ntawm lub ntsia liaj qhov rooj tsis txaus, thiab lwm yam laj thawj tuaj yeem ua rau cov roj thiab cov pa paug tshwm sim hauv qhov kev sib txuas ntawm lub valve lub cev.
02 Yog vim li cas tsom xam ntawm sab hauv to ntawm regulating valve qhov rooj
Yog vim li cas rau sab hauv ntawm lub regulating valve yog hais tias lub regulating valve tsis kaw nruj nreem, uas feem ntau tshwm sim nyob rau hauv lub sealing nto ntawm lub rooj zaum. Cov laj thawj tshwj xeeb rau kev nkag mus rau sab hauv ntawm cov tswj valve yog raws li hauv qab no: Muaj qee qhov teeb meem hauv kev tsim cov qauv tswj lub valve thiab kev tsim cov valve thiab kev tsim kho tshuab, xws li qhov loj ntawm cov khoom siv hauv lub valve thaum muaj. yog ib qho kev ua yuam kev, thiab qhov ua yuam kev ntau tshaj qhov tso cai ntawm cov txheej txheem ntau lawm, uas ua rau lub sealing ntawm lub regulating valve tsis nruj, uas ua rau lub me me ntws ntawm nruab nrab nyob rau hauv lub ntaus ntawv nruam to phenomenon.
Ntxiv nrog rau qhov tsis raug thiab teeb meem hauv kev tsim thiab tsim cov txheej txheem ntawm lub valve, qhov ua rau sab hauv ntawm lub qhov rooj tswj lub valve kuj muaj xws li deformation ntawm sealing nto ntawm lub rooj zaum valve, lub valve foob tsis nruj, uas ua rau qhov nruab nrab leakage teeb meem ntawm lub refining unit. Qhov nruab nrab leakage teeb meem tshwm sim los ntawm deformation ntawm lub sealing nto ntawm lub rooj zaum valve yog mas manifested li to. Tsis tas li ntawd, yog tias cov roj refining tau ntim nrog me me ntawm cov khoom impurities nyob rau hauv nruab nrab, nws kuj tuaj yeem ua rau lub regulating valve kaw xoob, ua rau cov dej ntws tawm ntawm cov tswj valve, thiab cov teeb meem los ntawm cov khoom impurities. muaj nyob rau hauv nruab nrab, daim ntawv ntawm to kuj yog to, tab sis qhov paug ntawm qhov ntws yuav me me, nws yuav loj txaus.
Ob, tiv thaiv cov kev cai valve to countermeasures
Optimize qhov kev xaiv ntawm valve tsim
Lub hauv paus ntsiab lus ntawm kev tswj thiab kev tiv thaiv ntawm kev tswj lub valve feem ntau yog los ua cov kev ntsuas zoo los txo qis cov dej ntws tawm ntawm kev tswj lub valve kom deb li deb tau thiab txo qis rau qhov qis, txhawm rau txuas lub neej kev pabcuam zoo ntawm lub hom phiaj. Kev txo qis thiab txo qis ntawm qhov nruab nrab ntawm kev tswj lub valve, kev txuas ntxiv ntawm kev pab cuam lub neej ntawm qhov nruab nrab hauv chav ua kom zoo dua qub, kev txhim kho ntawm kev siv tus nqi nruab nrab, mus rau qhov loj yog nyob ntawm qhov tsim nyog tsim thiab xaiv cov regulating valve, qhov zoo ntawm lub valve khoom zoo, qib superb ntawm lub valve installation thiab siv tshuab thiab kev xaiv kom raug ntawm daim ntawv foob valve. Nyob rau hauv luv luv, yog hais tias peb xav daws thiab tswj qhov to ntawm lub regulating valve, peb yuav tsum xub xav txog qhov optimization ntawm tus tsim thiab xaiv ntawm regulating valve.
Kev ua kom zoo tshaj plaws ntawm kev tswj lub valve tsim thiab kev xaiv suav nrog kev xaiv ntawm kev tswj lub valve, tsim thiab tsim khoom ntawm kev tswj lub valve nws tus kheej, thiab kev xaiv ntawm cov ntaub ntawv tswj valve. Thaum xaiv daim ntawv ntawm kev tswj lub valve, nws yuav tsum tau optimized los ntawm lub kaum sab xis ntawm cov kev cai ntawm cov txheej txheem tej yam kev mob thiab tsim specifications. Kev siv cov tswj valve, nruab nrab kub, siab, ntws tus nqi, siab poob thiab corrosion ntawm nruab nrab, tag nrho cov ncaj qha cuam tshuam rau kev xaiv ntawm regulating valve, tab sis kuj raws li qhov kub thiab corrosion ntawm nruab nrab, xaiv cov ntaub ntawv siv nyob rau hauv manufacturing regulating. valve. Raws li kev tsim kho thiab kev ua haujlwm tiag tiag, ntxiv rau kom ua tau raws li cov txheej txheem tsim nyog thiab cov qauv tsim tshwj xeeb, kev xaiv ntawm kev hloov kho li qub yuav tsum tau txiav txim siab tag nrho hauv ntau qhov xwm txheej tshwj xeeb, kom nws tuaj yeem phim cov kev ua haujlwm kom deb li deb tau, thiab ua tau raws li qhov yuav tsum tau siv rau ntau dua.
02 Packing box to tiv thaiv kev ntsuas
Cov tsoos mos packing foob yog ua tiav los ntawm radial kev nyuaj siab generated ntawm lub qia thiab cov packing thiab nruab nrab ntawm cov packing thiab sab phab ntsa ntawm lub thawv ntim los ntawm lub axial siab ntawm lub packing caj pas. Yog li ntawd, lub axial quab yuam ntawm lub caj pas yuav tsum yog loj heev, uas ua rau kom muaj kev sib txhuam torque ntawm lub packing thiab valve qia, nce hnav, thiab ceev ceev ntawm cov mos sealing packing. Yog li ntawd, lub caj pas bolt yuav tsum tau nruj nreem los yog lub packing yuav tsum tau hloov los xyuas kom meej sealing nyhuv zoo dua.
Qhov tsim nyog packing seal thiab packing seal ua ke tuaj yeem txhim kho kev ntseeg siab ntawm kev tswj lub valve thiab ua kom nws lub neej ua haujlwm ntev. Piv txwv li, kev sib xyaw ua ke ntawm graphite nplhaib packing yog zoo dua li ntawm cov graphite rings saj zawg zog nkaus xwb. Tam sim no, kev siv ib qho yooj yim graphite nplhaib muab tub lim yog ntau dua hauv Suav teb. Hauv cov teb chaws txawv teb chaws, kev siv cov graphite nplhaib sib xyaw ua ke tau nrov thiab ua tiav cov txiaj ntsig zoo.
03 Tshem tawm cov xau ntawm lub cev sib txuas
Lub valve lub cev kev twb kev txuas ib feem yog kaw, nyob rau hauv cov nqe lus ntawm nws sealing xwm yog zoo li qub foob, uas yuav tsum tau raws li nram no yuav tsum tau: tuaj yeem hloov mus rau qhov kub thiab txias hloov ceev; Ntau yam disassembly yam tsis muaj kev puas tsuaj rau lub sealing; Cov qauv yooj yim, compact, tsawg siv hlau; Tsis rhiab rau kev vibration thiab cuam tshuam loads; Nws tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm ntau yam kev tshaj tawm ua haujlwm.
Qhov kev sib txuas ntawm lub cev valve feem ntau yog kaw los ntawm birch zawj lossis concave thiab convex ca gasket. Nyob rau hauv xyoo tas los no, lub nplhaib "O" sealing kuj tau siv. Zen zawj hom pav ca gasket foob, yog lub tiaj tus gasket ntsia rau hauv qhov zawj kaw, cov qauv no ntawm lub sealing nto, tuaj yeem tsim lub siab sealing siab, feem ntau nyob deb dhau qhov kev txwv ntawm cov khoom siv gasket, kom ntseeg tau tias kev sib khi ruaj khov. Nws yog tsim rau nruab nrab thiab siab tswj li qub nrog siab siab dua los yog sib npaug rau 4.0MPa. Qhov tsis zoo ntawm cov qauv sealing no yog tias thaum tshem tawm cov kev tswj lub valve, lub gasket yog ib qho nyuaj rau tshem tawm ntawm lub sealing zawj. Yog hais tias nws yog rigidingly tshem tawm, lub gasket feem ntau yuav puas.
Concave thiab convex hom pav ca gasket sealing, yog lub tiaj tus gasket ntsia ntawm lub concave thiab convex flange sealing nto, piv nrog camphor groove hom ca gasket sealing qauv, muaj qhov zoo hauv qab no: thaum disassembling lub hloov valve, lub gasket yog ib qho yooj yim mus nqa. tawm; Vim tias qhov sealing zawj yog ib kauj ruam zoo, yog li kev ua haujlwm zoo dua.
Raws li cov txheej txheem tsis thiab cov khoom ua kua, aluminium, tooj liab, 1Cr18Ni9Ti thiab roj hmab asbestos board tuaj yeem raug xaiv los ua cov khoom ntawm cov pav ca. fluorine yas kuj yog ib qho khoom siv feem ntau siv gasket sealing khoom, tab sis vim nws cov dej txias, yog tias cov qauv foob tsis tsim kom zoo, nws yuav ua rau muaj qhov tsis zoo.
"O" sealing nplhaib, nws cov qauv yooj yim, kev tsim khoom yooj yim, tsuav yog lub foob qauv tsim tsim nyog, tom qab kev sib dhos tuaj yeem tsim kom txaus radial extrusion deformation, tuaj yeem ua tiav yam tsis muaj axial loading, yog li ntawd, flange txuas sealing, tuaj yeem txo qhov loj me. ntawm cov qauv flange, yog li txo qhov hnyav ntawm kev tswj valve.
04 Valve qia to countermeasures
Valve qia yog ib qho tseem ceeb ntawm lub valve, nws yog tsuas yog siv rau kev sib kis, kom ua tiav lub valve hloov thiab kev cai. Vim hais tias lub valve qia nyob rau hauv lub valve qhib thiab kaw cov txheej txheem los ua lub luag hauj lwm ntawm tsiv qhov chaw, quab yuam qhov chaw thiab cov ntsaws ruaj ruaj, yog li nws yuav tsum muaj ib tug tej yam lub zog thiab toughness kom tau raws li qhov yuav tsum tau ntawm lub valve qhib thiab kaw, thiab pab lub valve. ua nws txoj haujlwm tswj hwm. Feem ntau hais lus, xaiv cov khoom qia yuav siv qee qhov nruab nrab corrosion resistant, ntim thiab lwm yam khoom, thiab cov txheej txheem ua tau zoo dua. Thiab txhawm rau txhawm rau txhim kho kev sib txhuam thiab kev tiv thaiv corrosion ntawm lub qia valve, cov neeg ua haujlwm tseem yuav ntxiv dag zog rau qhov chaw ntawm lub valve kom tiv thaiv kev cuam tshuam thiab corrosion ntawm lub valve qia los ntawm qhov nruab nrab, kom cov pa tawm ntawm lub valve qia. tuaj yeem tswj tau zoo.
xaus
Txhawm rau kom daws tau qhov teeb meem ntawm cov dej ntws tawm ntawm cov tswj valve hauv chav ua kom zoo dua qub, qhov kev ntsuas tseem ceeb yog txhawm rau txhim kho kev xaiv ntawm kev tswj lub valve tsim, thiab tom qab ntawd tswj cov dej ntws tawm ntawm txhua feem ntawm cov tswj valve. Tsuas yog nyob rau hauv txoj kev no peb tuaj yeem daws tau zoo thiab tswj xyuas qhov teeb meem ntawm qhov kev tswj lub valve, tiv thaiv cov pa tawm ntawm qhov nruab nrab, thiab ua tiav lub hom phiaj ntawm kev txhim kho kev siv tus nqi nruab nrab.
Post lub sij hawm: Dec-02-2022
