Valve installation paub thiab teeb meem xav tau kev saib xyuas petrochemical cog valve installation yuav tsum

Valve installation kev paub thiab teeb meem xav tau kev saib xyuas petrochemical cog valve installation yuav tsum Valve installation yuav tsum Qhov zoo ntawm lub valve installation yog zoo los yog phem, ncaj qha cuam tshuam rau kev siv ntawm lub valve tom qab, yog li ntawd, lub tsev tsim thiab ntau lawm yuav tsum tau nkag mus rau qhov tseem ceeb heev. Kev teeb tsa lub valve yuav tsum tau ua raws li cov lus qhia valve thiab cov kev cai cuam tshuam. Nyob rau hauv tus txheej txheem ntawm kev tsim kho, peb yuav tsum xyuas kom zoo thiab ua tib zoo tsim. Ua ntej LUB VALVE INSTALLED, nws yuav tsum tau INSTALLED tom qab qhov kev ntsuas siab tau tsim nyog. Ua tib zoo xyuas seb qhov kev qhia tshwj xeeb thiab cov qauv ntawm lub valve puas zoo ib yam nrog cov duab kos, xyuas seb qhov chaw ntawm lub valve puas zoo lawm, seb qhov qhib thiab kaw lub valve puas hloov tau thiab dawb, thiab seb lub sealing nto puas, thiab lwm yam., thiab nruab. lub valve tom qab kev pom zoo. Thaum lub valve raug teeb tsa, lub tshuab ua haujlwm ntawm lub valve yuav tsum yog li 1.2m los ntawm kev ua haujlwm hauv av, uas yuav ntws nrog lub hauv siab. Thaum qhov nruab nrab ntawm lub valve thiab lub tes tuav yog ntau tshaj 1.8m deb ntawm qhov chaw ua haujlwm, lub chaw ua haujlwm yuav tsum tau teeb tsa rau lub valve thiab kev nyab xeeb li qub nrog kev ua haujlwm ntau dua. Rau cov kav dej uas muaj ntau lub li qub, sim ua kom pom tseeb cov li qub ntawm lub platform kom ua haujlwm yooj yim. Cov khoom siv xws li sprockets, txuas txuas ntxiv, lub platform txav tau, thiab cov ntaiv txav tau tuaj yeem siv rau tus kheej li qub tshaj 1.8m thiab ua haujlwm tsis tu ncua. Thaum lub VALVE tau teeb tsa hauv qab qhov chaw ua haujlwm, lub EXTENSION ROD yuav tsum tau muab, thiab lub VALVE hauv av yuav tsum tau muab lub qhov dej hauv av, uas yuav tsum tau capped kom muaj kev nyab xeeb. Lub qia ntawm lub valve ntawm cov yeeb nkab kab rov tav yuav tsum yog vertically upward. Nws tsis tsim nyog rau nruab lub qia downward. Valve qia downward installation, ua haujlwm tsis yooj yim, tsis yooj yim txij nkawm, tab sis kuj yooj yim rau corrosion valve kev sib tsoo. Tsis txhob nruab lub hauv pem teb valve askew kom tsis txhob ua haujlwm tsis yooj yim. Lub valve ntawm ib sab ntawm lub raj xa dej yuav tsum muaj qhov chaw rau kev ua haujlwm, kev saib xyuas thiab disassembly, thiab qhov kev ncua deb ntawm lub tes yuav tsum tsis pub tsawg tshaj 100 hli. Yog tias qhov kev ncua deb ntawm cov kav dej yog nqaim, lub valve yuav tsum staggered. Rau lub valve nrog loj qhib quab yuam, tsis tshua muaj zog, loj brittleness thiab hnyav hnyav, lub valve ncej txhawb nqa valve yuav tsum tau teem ua ntej installation kom txo tau pib kev ntxhov siab. Thaum txhim kho lub valve, siv cov yeeb nkab ciaj ntswj rau cov yeeb nkab uas nyob ib sab ntawm lub valve thiab ib lub twj tso kua mis tsis tu ncua rau lub valve nws tus kheej. Nyob rau tib lub sijhawm, kev teeb tsa, ua kom lub valve nyob rau hauv ib nrab-kaw lub xeev los tiv thaiv lub valve rotation thiab deformation. Kev txhim kho kom raug ntawm lub valve yuav tsum ua rau cov qauv sab hauv hauv kab nrog cov kev taw qhia ntws ntawm qhov nruab nrab, daim ntawv teeb tsa raws li qhov tshwj xeeb ntawm cov qauv valve thiab kev ua haujlwm yuav tsum tau ua. Kev saib xyuas tshwj xeeb yuav tsum tau them rau qhov nruab nrab ntawm qhov xav tau ntawm lub valve yuav tsum tau teeb tsa raws li qhov yuav tsum tau ua ntawm cov txheej txheem kav dej. TXOJ CAI NTAWM LUB VALVE yuav tsum yooj yim thiab siv tau rau tus neeg ua haujlwm. Rau liftT-stem li qub, yuav tsum muaj chaw ua haujlwm. Lub qia ntawm tag nrho cov li qub yuav tsum tau mounted upward thiab perpendicular rau cov yeeb nkab kom deb li deb tau. Kev txhim kho ntawm qhov sib txuas ntawm lub valve Yog tias qhov kawg ntawm lub valve yog threaded, cov ntsia hlau yuav tsum tau screwed rau hauv qhov tob ntawm lub valve. Yog tias cov ntsia hlau ntsia hlau rau hauv lub rooj sib sib zog nqus, nws yuav cuam tshuam rau kev sib koom tes zoo ntawm lub rooj zaum thiab lub rooj vag. Yog tias cov ntsia hlau raug ntsia rau hauv qhov ntiav, nws yuav cuam tshuam rau kev sib khi kev ntseeg siab ntawm kev sib koom tes, thiab nws yooj yim los qhia txog kev xau. Nyob rau tib lub sij hawm, cov xov sealing cov ntaub ntawv yuav tsum tau ua los ntawm PTFE raw daim kab xev sealant, thiab yuav tsum ceev faj tsis txhob muab cov sealing khoom rau lub valve kab noj hniav. Rau VALVES nrog Flange END CONNECTIONS, UA HAUJ LWM NTAWM LUB CONNECTING NTAWM LUB Flange, nrog rau pem hauv ntej lub ntsej muag PERPENDICULAR rau kab thiab lub BOLT HOLE aligned. Lub VALVE flange yuav tsum sib npaug zos rau cov yeeb nkab flange, qhov sib txawv ntawm flange yog nruab nrab, yuav tsum tsis muaj qhov tsis ncaj ncees lawm, qaij thiab lwm yam tshwm sim, qhov nruab nrab gasket ntawm flanges yuav tsum muab tso rau hauv nruab nrab, tsis tuaj yeem skewed, ntsia liaj qhov rooj yuav tsum. symmetrical thiab evenly tightened. Tiv thaiv kom tsis muaj zog ntxiv los ntawm kev yuam kom nruj qhov kev sib txuas thaum lub valve installation. Ua ntej kev teeb tsa, cov yeeb nkab sab hauv phab ntsa thiab cov xov sab nraud yuav tsum tau ntxuav kom huv si ntawm cov av; *** Burr thiab txawv teb chaws teeb meem uas cuam tshuam qhov ntws ntawm qhov nruab nrab thiab tuaj yeem cuam tshuam rau kev ua haujlwm ntawm cov khoom siv, tshuab cov av, slag thiab lwm yam sundries hauv cov yeeb nkab ua ntej txuas. Tiv thaiv kev puas tsuaj rau lub sealing nto ntawm lub valve los yog ntsaws lub valve. Thaum txhim kho lub valve txuas rau qhov kawg ntawm vuam, vuam seam ntawm ob qho kawg ntawm lub valve tom qab qhov chaw vuam yuav tsum tau npaj ua ntej, ces lub valve yuav tsum qhib, thiab vuam seam yuav tsum tau welded raws li cov txheej txheem vuam. Tom qab vuam, qhov zoo li thiab sab hauv vuam zoo ntawm cov vuam yuav tsum raug kuaj xyuas kom ntseeg tau tias tsis muaj porosity, slag suav nrog, tawg, thiab lwm yam, thiab cov vuam yuav tsum raug tshuaj xyuas los ntawm txoj kab hluav taws xob lossis kev tswj xyuas thaum tsim nyog. Kev txhim kho ntawm qhov hnyav dua thaum INSTALLING HEAVY VALVES (DN100), Siv cov cuab yeej nqa lossis khoom siv, LIFTING ROPE yuav tsum tau khi rau lub flange lossis bracket ntawm lub VALVE, tsis yog rau tus tuav hom valve qia, thiaj li zam kev puas tsuaj rau lub valve. Dab tsi yog cov kev cai dav dav rau kev teeb tsa valve? Teb: Cov kev cai dav dav rau kev teeb tsa lub valve, qhov tsim nyog installation qhov siab, valve ntawm kab rov tav yeeb nkab, valve qia kev taw qhia yog raws li hauv qab no: (1) Lub valve yuav tsum nyob rau hauv ib qho chaw yooj yim mus use, yooj yim rau kev khiav lag luam thiab tswj. Lub VALVES NTAWM ib kab ntawm cov kav dej (xws li cov kav dej mus rau thiab los ntawm cov cuab yeej) yuav tsum tau muab tso rau hauv nruab nrab, thiab kev ua haujlwm platform thiab ntaiv yuav tsum tau txiav txim siab. Parallel kev npaj ntawm lub valve ntawm lub raj xa dej, nws txoj kab nruab nrab yuav tsum nyob ze li sai tau. Qhov kev ncua deb ntawm lub handwheels yuav tsum tsis pub tsawg tshaj 10Qmm. Txhawm rau txo qhov kev ncua deb ntawm cov kav dej, cov li qub tuaj yeem staggered. (2) Qhov chaw teeb tsa ntawm lub valve nquag ua haujlwm yuav tsum yooj yim rau kev khiav lag luam, thiab qhov tsim nyog qhov siab yog 1.2m ntawm qhov chaw ua haujlwm. Thaum qhov siab ntawm qhov nruab nrab ntawm lub valve handwheel tshaj 2m ntawm qhov chaw khiav hauj lwm, lub platform yuav tsum tau teem rau lub valve pawg los yog ib tug nquag ua hauj lwm valve thiab kev ruaj ntseg valve, thiab cov kev ntsuas tsim nyog yuav tsum tau coj mus rau lub infrequently ua tus neeg valve. (xws li sprocket, extension pas nrig, movable platform thiab movable ntaiv, thiab lwm yam). Cov saw ntawm lub sprocket yuav tsum tsis txhob cuam tshuam kev nkag. Valves ntawm cov kav dej thiab cov khoom siv nrog cov xov xwm txaus ntshai yuav tsum tsis txhob muab tso rau hauv qhov siab ntawm lub taub hau ntawm tus neeg, kom tsis txhob ua mob rau lub taub hau, lossis ncaj qha ua rau tus neeg lub ntsej muag thaum lub valve ntws; (3) Lub valve siv nyob rau hauv cov khoom muab faib yuav tsum tau txuas ncaj qha nrog cov yeeb nkab qhov ncauj ntawm cov khoom siv los yog ze rau cov khoom siv. Lub valve ntawm cov yeeb nkab kab txuas nrog cov cuab yeej muaj kev phom sij heev thiab muaj kev phom sij heev yuav tsum tau txuas ncaj qha nrog lub qhov ncauj ntawm cov khoom siv, thiab lub valve yuav tsum tsis txhob siv cov saw ntsug ntsug; (4) Lub valve kho kev sib tsoo xws li hluav taws kub dej valve, hluav taws kub lub qhov hluav taws xob thiab lwm yam ob lub valve yuav tsum tau tawg, thiab coj mus rau hauv tus account qhov kev nyab xeeb ntawm kev sib tsoo. Hom valve no yuav tsum muab tso rau tom qab chav tswj. Qab ntawm phab ntsa kev nyab xeeb, sab nraum lub Hoobkas qhov rooj, lossis nrog ib qho kev nyab xeeb ntawm qhov chaw sib tsoo; Txhawm rau tua hluav taws, tus neeg teb xov tooj tuaj yeem ua haujlwm tau zoo; (5) Ntxiv rau qhov tshwj xeeb ntawm cov txheej txheem, lub valve ntawm cov yeeb nkab hauv qab ntawm cov pej thuam, reactor, ntsug nkoj thiab lwm yam khoom siv yuav tsum tsis txhob muab tso rau hauv daim tiab; (6) qhov txiav tawm ntawm cov kab kab rov tav cov yeeb nkab coj los ntawm cov yeeb nkab qhuav yuav tsum nyob ze ntawm lub hauv paus ntawm cov kab rov tav cov yeeb nkab; (7) nqa cov tshev valve yuav tsum tau muab tso rau hauv kab rov tav raj, ntsug nqa daim tshev valve yuav tsum tau muab tso rau hauv cov yeeb nkab nruab nrab ntws los ntawm hauv qab mus rau sab saum toj ntawm cov kav dej ntsug. Lub viav vias kos valve yuav tsum tau muab tso rau hauv txoj kab rov tav, tuaj yeem ntsia tau rau hauv cov yeeb nkab nruab nrab ntws los ntawm hauv qab mus rau txoj kab ntsug; Lub valve hauv qab yuav tsum tau muab tso rau hauv lub twj tso kua mis centrifugal suction installation qhov siab, tuaj yeem xaiv npauj npaim kos valve; Qhov hluav taws xob twj tso kua mis thiab txoj kab uas hla ntawm cov yeeb nkab txuas tsis zoo ib yam, tuaj yeem xaiv txo txoj kab hluav taws xob kos valve; (8) qhov nruab nrab ntawm qhov nruab nrab ntawm lub log ntawm lub valve tau teem ib ncig ntawm lub platform thiab ntug ntawm lub platform khiav lag luam yuav tsum tsis txhob siab tshaj 450mm, thaum lub qia thiab lub tes log txuas rau saum lub platform thiab qhov siab tsawg dua 2m, nws yuav tsum tsis txhob cuam tshuam rau kev ua haujlwm thiab kev ua haujlwm ntawm tus neeg teb xov tooj; (9) Lub valve ntawm cov kav dej hauv av yuav tsum nyob hauv cov yeeb nkab trench lossis lub valve zoo, thiab yog tias tsim nyog, lub valve txuas txuas yuav tsum tau teeb tsa. Hluav taws kub dej valve zoo yuav tsum muaj cov cim pom tseeb; (10) Rau lub valve ntawm txoj kab rov tav, kev taw qhia ntawm qia tuaj yeem txiav txim siab raws li hauv qab no: ntsug upward; Qib; 45-txoj kab uas hla; nqes nqes 45; Tsis muaj ntsug downward; (11) Valve qia kab rov tav installation ntawm qhib pas nrig hom valve, thaum lub valve qhib, lub valve qia yuav tsis cuam tshuam rau txoj kev. Kos lub valve installation xav tau kev saib xyuas (1) Kev teeb tsa txoj haujlwm, qhov siab, ntshuam thiab xa tawm yuav tsum ua kom tau raws li cov qauv tsim, ua tib zoo saib xyuas qhov nruab nrab ntws kev taw qhia yuav tsum ua raws li tus xub taw qhia cim los ntawm lub valve lub cev, kev sib txuas yuav tsum ruaj thiab nruj. . (2) Cov tsos ntawm lub valve yuav tsum tau kuaj xyuas ua ntej kev teeb tsa, thiab daim ntawv teev npe ntawm lub valve yuav tsum ua raws li cov kev cai ntawm lub teb chaws tus qauv tam sim no "General Valve Logo" GB 12220. Rau kev ua haujlwm siab tshaj 1.0mpa thiab hauv lub ntsiab yeeb nkab kom txiav tawm lub luag hauj lwm ntawm lub valve, yuav tsum tau ntsia ua ntej lub zog thiab nruj kev ua tau zoo xeem, tsim nyog tom qab siv. Thaum lub sij hawm kuaj lub zog, qhov kev ntsuam xyuas siab yog 1.5 npaug ntawm lub nominal siab, thiab lub sij hawm tsis tsawg tshaj li 5min. Lub plhaub valve thiab packing yuav tsum tsim nyog yam tsis muaj to. Tightness test, ntsuas siab yog 1.1 npaug ntawm lub nominal siab; Lub sij hawm ntawm qhov kev xeem ua raws li qhov yuav tsum tau ua ntawm GB 50243. (3) Tsis txhob ua kom lub pob valve dais qhov hnyav hauv cov kav dej, qhov loj kos valve (AETV ib-txoj kev valve): yuav tsum yog ** * kev txhawb nqa, kom nws yog tsis cuam tshuam los ntawm lub siab tsim los ntawm cov yeeb nkab system.