4 npas nruj
Lub rooj zaum tseem ceeb tshaj plaws sealing khoom raupob li qubyog polytetraoxyethylene (PTFE), uas yog rhiab heev rau yuav luag txhua yam tshuaj, thiab muaj kev sib txhuam coefficient tsawg, kev ua haujlwm ruaj khov, tsis yooj yim rau hnub nyoog, qhov kub thiab txias ntau yam thiab sealing kev ua tau zoo heev cov yam ntxwv.Txawm li cas los xij, cov khoom siv lub cev ntawm PTFE, suav nrog kev nthuav dav coefficient, rhiab heev rau cov dej txias thiab cov thermal conductivity tsis zoo, yuav tsum tau tsim lub rooj zaum valve los tsom rau cov yam ntxwv no.Cov khoom siv yas ntawm lub rooj zaum valve kuj suav nrog PTFE, nylon thiab ntau lwm yam ntaub ntawv.Txawm li cas los xij, thaum cov khoom siv sealing nyuaj, kev ntseeg siab ntawm lub foob yuav raug puas tsuaj, tshwj xeeb tshaj yog nyob rau hauv cov ntaub ntawv ntawm qhov sib txawv tsis tshua muaj siab.Tsis tas li ntawd, cov roj hmab hluavtaws xws li roj hmab butyl kuj tseem tuaj yeem siv los ua cov khoom siv lub rooj zaum valve, tab sis nws cov tshuaj siv tau nruab nrab thiab kub ntau yam txwv.Tsis tas li ntawd, yog tias qhov nruab nrab tsis yog lubricated, kev siv cov roj hmab hluavtaws yuav ua rau lub pob.
Txhawm rau kom ua tau raws li kev siv cov kev cai ntawm kev lag luam xws li kev kub siab, kev kub siab, muaj zog yaig, lub neej ntev, thiab lwm yam, cov khoom siv hlau kaw tau zoo heev hauv kaum xyoo dhau los.Tshwj xeeb tshaj yog nyob rau hauv tsim muaj lub teb chaws, xws li lub tebchaws United States, Ltalis, lub teb chaws Yelemees, Spain, lub Netherlands, thiab lwm yam., cov qauv ntawm lub pob valve tau raug txhim kho tsis tu ncua, thiab muaj tag nrho cov-welded lub cev ncaj-faus pob li qub, nqa. pob li qub, thiab pob li qub nyob rau hauv cov kav dej ntev, cov khoom siv roj refining, thiab lwm yam. Cov kev lag luam muaj ntau dua thiab dav siv, nrog txoj kab uas hla loj (3050mm), siab siab (70MPa) thiab dav kub ntau (-196 ~ 8159C) pob li qub tshwm sim, yog li ntawd lub tshuab ntawm lub pob valve tau mus txog qib tshiab.
5 Pob valve tsim thiab tsim khoom
Vim yog daim ntawv thov ntawm Computer Aided Design (CAD), Computer Aided Manufacturing (CAM) thiab Mulberry Manufacturing System (FMS) hauv kev lag luam valve, kev tsim thiab tsim cov pob li qub tau mus txog qib tshiab.Tsis tsuas yog nws tau tsim kho tshiab ntawm lub valve tsim kev suav cov qauv, tab sis kuj txo qhov hnyav thiab rov ua haujlwm niaj hnub tsim ua haujlwm ntawm cov kws tshaj lij thiab cov neeg ua haujlwm, kom cov kws tshaj lij muaj lub zog ntau dua los txhim kho, txhim kho cov khoom lag luam thiab kev tsim khoom tshiab, thiab ua kom luv luv ntawm kev tshawb fawb thiab kev loj hlob voj voog ntawm cov khoom tshiab., Txhim kho kev ua haujlwm ntawm txhua txoj kev, thiab nyob rau hauv cov txheej txheem ntawm kev tshawb fawb thiab kev loj hlob ntawm lifting pas nrig hom hlau sealing pob valve, vim yog daim ntawv thov ntawm CAD / CAM, ib tug dav pas nrig kauv ca ua los ntawm lub computer-aided tsim thiab lub computer. -aided CNC tshuab cuab yeej tau tshwm sim, uas yog hlau foob.Lub pob valve tsis muaj khawb thiab hnav thaum lub sijhawm qhib thiab kaw, kom lub sealing kev ua tau zoo thiab kev pabcuam lub neej ntawm lub pob valve tau zoo heev.Thaum lub pob valve qhib tag nrho, qhov kev khiav hauj lwm yog me me, yuav luag sib npaug ntawm xoom, yog li qhov sib npaug ntawm lub pob valve yog dav siv hauv cov roj thiab cov kav dej vim nws yooj yim los ntxuav cov kav dej.Vim tias lub pob ntawm lub pob valve tau muab tshem tawm thaum lub sijhawm qhib thiab kaw, feem ntau lub pob valve tuaj yeem siv rau hauv xov xwm nrog cov khoom raug tshem tawm.Nyob ntawm cov khoom ntawm lub nplhaib sealing, nws kuj tuaj yeem siv rau hauv cov hmoov thiab granular media.
6 Lub sijhawm siv pob valve
Txij li thaum lub pob valve feem ntau siv roj hmab, nylon thiab polytetraoxyethylene raws li cov khoom siv lub nplhaib sealing, nws siv qhov kub thiab txias yog txwv los ntawm lub rooj zaum lub nplhaib sealing khoom.Qhov kev txiav tawm ntawm lub pob dav yog ua tiav los ntawm lub pob hlau raug nias tawm tsam ib leeg ntawm cov rooj zaum yas valve hauv qab qhov kev txiav txim ntawm qhov nruab nrab (floating pob valve).Nyob rau hauv qhov kev txiav txim ntawm qee qhov kev sib cuag, lub valve lub rooj sib khi lub nplhaib deforms elastically thiab plastically hauv qee qhov chaw.Qhov deformation no tuaj yeem them nyiaj rau qhov raug thiab qhov roughness ntawm lub pob, thiab xyuas kom meej qhov kev sib khi ntawm lub pob valve.
Tsis tas li ntawd, txij li lub rooj sib khi lub nplhaib ntawm lub pob valve feem ntau yog ua los ntawm cov yas, thaum xaiv cov qauv thiab kev ua haujlwm ntawm lub pob valve, nws yog ib qho tsim nyog yuav tsum xav txog qhov hluav taws kub thiab hluav taws kub ntawm lub pob valve, tshwj xeeb tshaj yog nyob rau hauv cov roj av, chemical, metallurgical thiab lwm yam sectors, nyob rau hauv lub flammable thiab explosive media Kev siv cov pob li qub nyob rau hauv cov khoom siv thiab cov kav dej ntawm Teb Chaws Asmeskas yuav tsum tau them nyiaj ntau dua rau kev tiv thaiv hluav taws thiab tiv thaiv hluav taws.
Feem ntau, nyob rau hauv ob txoj hauj lwm hloov, nruj sealing kev ua tau zoo, av nkos, abrasion, caj dab channel, ceev ceev qhib thiab kaw qhov kev txiav txim (1/4 tig qhib thiab kaw), siab siab txiav-tawm (loj siab sib txawv), tsis tshua muaj suab nrov, cavitation thiab vaporization, Hauv cov kav dej uas muaj qhov me me ntawm cov pa tawm mus rau qhov chaw, kev ua haujlwm me me thiab cov kua dej me me, cov pob li qub tau pom zoo.
Pob li qub kuj tseem tsim nyog rau cov kav dej nrog cov qauv teeb pom kev zoo, tsis tshua muaj siab txiav tawm (qhov sib txawv me me), thiab corrosive media.
Pob li qub tseem tuaj yeem siv rau hauv cov khoom siv kub kub (cryogenic) thiab cov kav dej.
Nyob rau hauv cov pa oxygen pipeline system ntawm kev lag luam metallurgical, pob li qub uas tau ua tiav kev kho degreasing nruj yuav tsum tau ua.
Thaum cov kab tseem ceeb hauv cov roj thiab cov kav dej yuav tsum tau muab faus rau hauv av, tag nrho txoj kab uas hla welded pob li qub yuav tsum.
Thaum kho qhov kev ua tau zoo, yuav tsum tau xaiv lub pob valve nrog cov qauv tshwj xeeb nrog lub V-shaped qhib.
Hauv roj av, petrochemical, tshuaj, hluav taws xob, thiab kev tsim kho hauv nroog, hlau-rau-hlau kaw pob li qub tuaj yeem siv rau cov kav dej uas muaj qhov kub thiab txias tshaj 200 ° C.
7 Cov ntsiab cai ntawm kev siv pob li qub
Rau cov kav dej thiab cov roj av, cov kav dej uas yuav tsum tau ntxuav, thiab faus rau hauv av, siv tag nrho-pass thiab tag nrho-welded pob li qub;rau faus rau hauv av, xaiv all-pass welded los yog flanged pob li qub;ceg kav, xaiv flange kev twb kev txuas, vuam kev twb kev txuas, puv-pass los yog txo txoj kab uas hla pob valve.
Rau kev thauj mus los thiab cov khoom siv khaws cia ntawm cov roj refined, siv flanged pob li qub.
Rau cov kav dej hauv nroog thiab cov nkev roj, siv cov pob valve uas muaj flange kev twb kev txuas thiab cov xov txuas sab hauv.
Nyob rau hauv cov pa oxygen pipeline system nyob rau hauv lub metallurgical system, ib tug ruaj pob valve uas tau undergone nruj degreasing kev kho mob thiab flanged kev twb kev txuas yuav tsum tau siv.
Rau cov kav dej kub thiab cov khoom siv uas tsis tshua muaj hluav taws xob, cov khoom siv hluav taws xob qis nrog lub kaus mom yuav tsum tau siv.Nyob rau hauv lub kav dej ntawm lub catalytic cracking unit ntawm cov roj refining unit, ib tug lifter-hom pob valve tuaj yeem xaiv.
Hauv cov khoom siv thiab cov kav dej ntawm cov xov xwm corrosive xws li cov kua qaub thiab alkali hauv cov tshuaj lom neeg, nws raug nquahu kom siv tag nrho cov hlau stainless pob li qub ua los ntawm austenitic stainless hlau thiab polytetraoxyethylene ua lub rooj zaum thiab lub nplhaib sealing.
Hlau-rau-hlau sealing pob li qub tuaj yeem siv rau hauv cov kav dej lossis cov khoom siv rau kev kub siab tshaj tawm hauv cov tshuab metallurgical, lub zog hluav taws xob, kev teeb tsa petrochemical, thiab cov cua sov hauv nroog.
Thaum qhov kev hloov pauv yuav tsum tau ua, lub cav tsav tsheb, pneumatic lossis hluav taws xob pob valve nrog V-shaped qhib tuaj yeem xaiv.