4 lub pob nruj
Cov khoom siv sealing tseem ceeb tshaj plaws rau lub rooj zaumlub pob valveyog polytetraoxyethylene (PTFE), uas rhiab heev rau yuav luag txhua yam tshuaj lom neeg, thiab muaj cov coefficient sib txhuam tsawg, kev ua haujlwm ruaj khov, tsis yooj yim rau laus, ntau yam kev siv kub thiab kev ua haujlwm sealing zoo heev. Txawm li cas los xij, cov khoom siv lub cev ntawm PTFE, suav nrog cov coefficient nthuav dav siab, rhiab heev rau dej txias thiab kev ua haujlwm thermal tsis zoo, xav tau kev tsim cov foob pob valve kom tsom mus rau cov yam ntxwv no. Cov khoom siv yas ntawm lub foob pob valve kuj suav nrog PTFE puv, nylon thiab ntau lwm yam khoom siv. Txawm li cas los xij, thaum cov khoom siv sealing ua tawv, qhov kev ntseeg tau ntawm lub foob yuav raug puas tsuaj, tshwj xeeb tshaj yog thaum muaj qhov sib txawv siab tsawg. Tsis tas li ntawd, cov roj hmab hluavtaws xws li roj hmab butyl kuj tseem siv tau ua cov khoom siv foob pob valve, tab sis nws cov tshuaj nruab nrab thiab qhov kub thiab txias raug txwv. Tsis tas li ntawd, yog tias cov nruab nrab tsis tau lubricated, kev siv cov roj hmab hluavtaws yuav ua rau lub pob jam.
Yuav kom ua tau raws li qhov xav tau ntawm kev siv hauv kev lag luam xws li kub siab, siab siab, muaj zog yaig, lub neej ntev, thiab lwm yam, cov hlau-kaw pob li qub tau tsim kho zoo heev hauv kaum xyoo dhau los. Tshwj xeeb tshaj yog nyob rau hauv cov teb chaws tsim kev lag luam, xws li Tebchaws Meskas, Ltalis, Lub Tebchaws Yelemees, Spain, Netherlands, thiab lwm yam., Cov qauv ntawm lub pob li qub tau txhim kho tas li, thiab muaj tag nrho-welded lub cev ncaj qha-faus pob li qub, tsa pob li qub, thiab pob li qub hauv cov kav dej ntev, cov khoom siv roj refining, thiab lwm yam. Kev lag luam tau siv ntau dua thiab ntau dua, nrog rau lub taub loj (3050mm), siab siab (70MPa) thiab ntau qhov kub thiab txias (-196 ~ 8159C) pob li qub tshwm sim, yog li cov thev naus laus zis ntawm lub pob li qub tau mus txog qib tshiab.
5 Lub pob valve tsim thiab tsim khoom
Vim yog siv Computer Aided Design (CAD), Computer Aided Manufacturing (CAM) thiab Mulberry Manufacturing System (FMS) hauv kev lag luam valve, kev tsim thiab tsim cov pob valve tau mus txog qib tshiab. Nws tsis yog tsuas yog tsim kho txoj kev xam tsim valve xwb, tab sis kuj txo cov haujlwm tsim qauv hnyav thiab rov ua dua ntawm cov kws tshaj lij thiab cov neeg ua haujlwm, kom cov kws kho tshuab muaj zog ntau dua los txhim kho, txhim kho kev ua haujlwm ntawm cov khoom thiab kev tsim khoom tshiab, thiab luv lub voj voog kev tshawb fawb thiab kev tsim khoom ntawm cov khoom tshiab. , Txhim kho kev tsim khoom ntawm cov neeg ua haujlwm hauv txhua txoj kev, thiab hauv cov txheej txheem ntawm kev tshawb fawb thiab kev tsim khoom ntawm cov pas nrig hlau sealing pob valve, vim yog siv CAD / CAM, ib lub pas nrig dav dav ua los ntawm kev tsim kho computer-aided thiab cov cuab yeej CNC tshuab tau tshwm sim, uas yog lub foob hlau. Lub pob valve tsis muaj khawb thiab hnav thaum lub sijhawm qhib thiab kaw, yog li kev ua haujlwm sealing thiab lub neej ua haujlwm ntawm lub pob valve tau zoo dua. Thaum lub pob valve qhib tag, qhov tsis kam ntawm cov dej ntws yog me me heev, yuav luag sib npaug rau xoom, yog li lub pob valve sib npaug yog siv dav hauv cov kav dej roj thiab roj av vim nws yooj yim los ntxuav cov kav dej. Vim tias lub pob ntawm lub pob valve raug so thaum lub sijhawm qhib thiab kaw, feem ntau cov pob valve tuaj yeem siv rau hauv cov khoom siv nrog cov khoom khov kho. Nyob ntawm cov khoom siv ntawm lub nplhaib sib khi, nws kuj tseem siv tau rau hauv cov hmoov thiab cov khoom siv granular.
6 Lub pob valve siv tau rau lub sijhawm
Vim tias lub pob valve feem ntau siv roj hmab, nylon thiab polytetraoxyethylene ua cov khoom siv rau lub rooj zaum sealing, nws qhov kub thiab txias siv yog txwv los ntawm cov khoom siv rau lub rooj zaum sealing. Qhov txiav tawm ntawm qhov dav ntawm lub pob yog ua tiav los ntawm lub pob hlau raug nias rau ib leeg ntawm cov rooj zaum yas valve nyob rau hauv qhov kev ua ntawm qhov nruab nrab (floating ball valve). Nyob rau hauv qhov kev ua ntawm qee qhov kev sib cuag siab, lub rooj zaum sealing nplhaib deforms elastically thiab plastically nyob rau hauv qee qhov chaw. Qhov deformation no tuaj yeem them rau qhov tseeb ntawm kev tsim khoom thiab qhov roughness ntawm lub pob, thiab xyuas kom meej tias lub pob valve sealing kev ua tau zoo.
Tsis tas li ntawd xwb, vim tias lub nplhaib kaw ntawm lub pob valve feem ntau yog ua los ntawm yas, thaum xaiv cov qauv thiab kev ua tau zoo ntawm lub pob valve, nws yog ib qho tsim nyog los xav txog qhov tiv thaiv hluav taws thiab tiv thaiv hluav taws ntawm lub pob valve, tshwj xeeb tshaj yog hauv roj av, tshuaj lom neeg, metallurgical thiab lwm yam kev lag luam, hauv cov xov xwm flammable thiab tawg. Kev siv lub pob valve hauv cov khoom siv thiab cov kav dej ntawm Tebchaws Meskas yuav tsum tau them sai sai rau kev tiv thaiv hluav taws thiab kev tiv thaiv hluav taws.
Feem ntau, nyob rau hauv ob-txoj hauj lwm kev hloov kho, kev ua tau zoo sealing nruj, av nkos, abrasion, necking channel, qhib thiab kaw sai (1/4 tig qhib thiab kaw), siab siab txiav-tawm (qhov sib txawv siab loj), suab nrov tsawg, cavitation thiab vaporization, Hauv cov kav dej nrog me me ntawm qhov xau rau huab cua, me me ua haujlwm torque thiab me me kua tsis kam, lub pob valve raug pom zoo.
Cov pob valve kuj tsim nyog rau cov kav dej uas muaj cov qauv sib dua, qhov txiav tawm siab tsawg (qhov sib txawv me me), thiab cov xov xwm corrosive.
Cov pob li qub kuj tseem siv tau rau hauv cov khoom siv kub qis (cryogenic) thiab cov kav dej.
Hauv cov kab ke oxygen ntawm kev lag luam metallurgical, cov pob li qub uas tau dhau los ua kev kho degreasing nruj heev yog qhov yuav tsum tau ua.
Thaum cov kab tseem ceeb hauv cov kav dej roj thiab roj av yuav tsum tau faus rau hauv av, yuav tsum muaj cov pob valve uas muaj qhov loj tag nrho.
Thaum xav tau kev kho kom zoo, yuav tsum xaiv lub pob valve nrog cov qauv tshwj xeeb nrog lub qhov qhib V-puab.
Hauv roj av, petrochemical, tshuaj lom neeg, hluav taws xob, thiab kev tsim kho hauv nroog, cov hlau-rau-hlau kaw pob li qub tuaj yeem siv rau cov kav dej nrog qhov kub ua haujlwm siab dua 200 ° C.
7 Cov Ntsiab Cai ntawm kev siv lub pob valve
Rau cov kav dej roj thiab roj av, cov kav dej uas yuav tsum tau ntxuav, thiab faus rau hauv av, siv cov pob valve uas hla dhau thiab hla dhau; rau faus rau hauv av, xaiv cov pob valve uas hla dhau lossis flanged; cov kav dej ceg, Xaiv kev sib txuas flange, kev sib txuas vuam, kev hla dhau tag nrho lossis txo qhov loj ntawm lub pob valve.
Rau cov kav dej thauj mus los thiab cov khoom siv khaws cia ntawm cov roj refined, siv cov flanged ball valves.
Rau cov kav dej roj hauv nroog thiab cov kav dej roj ntuj, siv cov pob valve uas muaj flange txuas thiab xov sab hauv.
Hauv cov kab ke oxygen hauv lub cev metallurgical, lub pob valve ruaj khov uas tau dhau los ntawm kev kho degreasing nruj thiab kev sib txuas flanged yuav tsum tau siv.
Rau cov kav dej kub qis thiab cov khoom siv, yuav tsum siv cov pob valve kub qis nrog lub hau. Hauv cov kav dej ntawm chav catalytic cracking ntawm chav refining roj, lub pob valve hom lifter tuaj yeem xaiv tau.
Hauv cov khoom siv thiab cov kav dej ntawm cov xov xwm corrosive xws li kua qaub thiab alkali hauv cov txheej txheem tshuaj lom neeg, nws raug nquahu kom siv txhua lub pob valve stainless hlau ua los ntawm austenitic stainless hlau thiab polytetraoxyethylene ua lub rooj zaum thiab lub nplhaib sealing.
Cov hlau-rau-hlau sealing pob li qub siv tau rau hauv cov kav dej lossis cov khoom siv rau cov xov xwm kub hauv cov tshuab hlau, cov tshuab fais fab, kev teeb tsa petrochemical, thiab cov tshuab cua sov hauv nroog.
Thaum xav tau kev hloov kho qhov ntws, lub qhov dej uas siv lub iav cab, lub qhov dej uas siv lub tshuab cua lossis lub pob hluav taws xob uas muaj qhov qhib zoo li V tuaj yeem xaiv tau.