0102 ib0304 ib05
Nws yog ib qho tseem ceeb kom nco ntsoov cov ntsiab lus no thaum nws los txog rau lub valve installation.
2022-09-14 IB
Nws yog ib qho tseem ceeb kom nco ntsoov cov ntsiab lus no thaum nws los txog rau lub valve installation. Thaum lub valve lub cev yog cam khwb cia, nws nto yuav tsum du thiab du, tsis muaj kab nrib pleb, keyholes, tracholes, pores, burrs thiab lwm yam tsis xws luag; Thaum forging sab nraum lub valve lub cev, qhov saum npoo yuav tsum tsis muaj kab nrib pleb, interlayers, tawv tawv, me ntsis thiab lwm yam tsis xws luag. Daim ntawv pov thawj zoo yuav tsum tau kuaj xyuas ua ntej lub valve raug teeb tsa. Cov chaw tsim khoom lub npe yuav tsum nyob rau ntawm lub valve, thiab cov chaw tsim khoom lub npe, valve qauv, nominal siab, nominal txoj kab uas hla thiab lwm daim ntawv lo yuav tsum nyob rau ntawm lub nameplate thiab valve lub cev, thiab yuav tsum ua raws li cov kev cai ntawm "General Valve Logo" GB12220. Lub valve yuav tsum raug kuaj pom ua ntej kev teeb tsa Thaum lub valve lub cev raug nrum, nws qhov chaw yuav tsum du thiab du, tsis muaj kab nrib pleb, qhov tseem ceeb, tracholes, pores, burrs thiab lwm yam tsis xws luag; Thaum forging sab nraum lub valve lub cev, qhov saum npoo yuav tsum tsis muaj kab nrib pleb, interlayers, tawv tawv, me ntsis thiab lwm yam tsis xws luag. I. Cov ntaub ntawv tshuaj xyuas Cov ntaub ntawv pov thawj zoo yuav tsum tau kuaj xyuas ua ntej lub valve raug teeb tsa. Cov chaw tsim khoom lub npe yuav tsum nyob rau ntawm lub valve, thiab cov chaw tsim khoom lub npe, valve qauv, nominal siab, nominal txoj kab uas hla thiab lwm daim ntawv lo yuav tsum nyob rau ntawm lub nameplate thiab valve lub cev, thiab yuav tsum ua raws li cov kev cai ntawm "General Valve Logo" GB12220. Qhov thib ob, kev soj ntsuam zoo li qub Lub valve yuav tsum tau pom qhov muag pom ua ntej kev teeb tsa 1. Qhov qhib thiab kaw txoj haujlwm ntawm lub valve thaum lub sijhawm thauj mus los yuav tsum ua raws li cov cai hauv qab no · Li qub, lub ntiaj teb li qub, lub valve valve, regulating li qub, npauj npaim li qub, hauv qab li qub thiab lwm yam li qub yuav tsum. Nyob rau hauv qhov chaw kaw tag nrho Plug valve, lub pob valve kaw qhov chaw yuav tsum nyob rau hauv tag nrho qhib txoj hauj lwm · Lub diaphragm valve yuav tsum nyob rau hauv lub kaw txoj hauj lwm thiab tsis kaw nruj heev kom tsis txhob muaj kev puas tsuaj rau lub diaphragm · Lub disc ntawm lub check valve yuav tsum yog. kaw thiab ruaj ntseg 2, lub valve yuav tsum tsis txhob puas, qhov uas ploj lawm, corrosion, nameplate tawm thiab lwm yam tshwm sim, thiab lub valve lub cev yuav tsum tsis txhob qias neeg 3. Ob qhov kawg ntawm lub valve yuav tsum tau tiv thaiv. Kev tuav lossis tes log yuav tsum tau hloov pauv thiab lub teeb, tsis muaj qhov tshwm sim daig 4. Thaum lub valve lub cev yog casting, nws nto yuav tsum du thiab du, tsis muaj kab nrib pleb, keyholes, tracholes, pores, burrs thiab lwm yam tsis xws luag; Thaum forging sab nraum lub valve lub cev, qhov saum npoo yuav tsum tsis muaj kab nrib pleb, interlayers, tawv tawv, me ntsis thiab lwm yam tsis xws luag. 5, kos valve disc los yog spool kev txiav txim yog hloov tau thiab raug, tsis muaj eccentricity, txav los yog skew phenomenon 6, lub caij nplooj ntoos hlav hom kev ruaj ntseg valve yuav tsum muaj ib tug hlau foob, lever hom kev ruaj ntseg valve yuav tsum muaj ib tug hnyav rauj positioning ntaus ntawv 7. Lub puab nto ntawm lub lub cev lined nrog roj hmab, enamel thiab yas yuav tsum du thiab du, cov txheej hauv ob sab phlu yog ruaj khov nrog cov matrix, thiab tsis muaj qhov tawg, npuas thiab lwm yam tsis xws luag. Qhov saum npoo ntawm txheej txheej yuav tsum raug kuaj xyuas los ntawm lub tshuab hluav taws xob ntau zaus, thiab tsis muaj kev puas tsuaj ntawm cov txheej txheej hauv ob sab phlu (dawb flash tshwm sim) yog tsim nyog 8, valve flange sealing nto yuav tsum ua tau raws li qhov yuav tsum tau ua, thiab tsis muaj hluav taws xob khawb Nws yog ib qho tseem ceeb kom khaws cia. cov ntsiab lus hauv siab txog kev teeb tsa valve! (a) valve installation kev taw qhia thiab txoj hauj lwm ntawm ntau lub li qub nrog cov kev taw qhia, xws li lub ntiaj teb valve, throttle valve, siab txo valve, kos valve, thiab lwm yam., yog tias ntsia rov qab, nws yuav cuam tshuam rau kev siv cov nyhuv thiab lub neej (xws li throttle valve), los yog yooj yim tsis ua hauj lwm (xws li lub siab txo valve), thiab txawm ua rau muaj kev phom sij (xws li check valve). General valve, muaj cov cim taw qhia ntawm lub cev valve; Yog tias tsis yog, nws yuav tsum raug txheeb xyuas raws li lub hauv paus ntsiab lus ntawm kev ua haujlwm valve. Lub valve chamber nyob ib ncig ntawm lub ntiaj teb valve yog asymmetrical, kua los ntawm hauv qab mus rau sab saum toj los ntawm lub valve chaw nres nkoj, yog li cov kua kuj yog me me (txiav txim siab los ntawm cov duab), qhib zog-txuag (vim qhov nruab nrab siab nce) , kaw tom qab qhov nruab nrab siab packing, yooj yim kho, qhov no yog vim li cas lub ntiaj teb valve tsis tuaj yeem nruab qhov tseeb. Lwm cov valve muaj lawv tus kheej yam ntxwv. Ntshuam thiab domestic thov nias lub valve installation txoj hauj lwm, yuav tsum yooj yim rau kev khiav lag luam: txawm tias lub installation yog ib ntus nyuaj, tab sis kuj rau lub sij hawm ntev ntawm tus neeg teb xov tooj. Valve handwheel thiab hauv siab ua kom zoo (feem ntau 1.2 meters los ntawm kev ua haujlwm hauv pem teb), kom qhov qhib thiab kaw ntawm lub valve yog siv zog tsawg. Pem teb valve handwheel yuav tsum tig los thiab tsis tilted kom tsis txhob ua haujlwm txawv txawv. Lub valve ntawm lub tshuab phab ntsa nyob ntawm cov khoom siv, thiab tus neeg teb xov tooj yuav tsum tau sab laug sab laug. Txhawm rau kom tsis txhob ua haujlwm ntawm lub ntuj, tshwj xeeb tshaj yog cov kua qaub thiab alkali, tshuaj lom tshaj tawm, txwv tsis pub nws tsis muaj kev nyab xeeb. Lub rooj vag yuav tsum tsis txhob thim rov qab (uas yog, lub log tsheb poob qis), txwv tsis pub qhov nruab nrab yuav khaws cia rau hauv qhov chaw npog rau lub sijhawm ntev, yooj yim rau corrode lub qia, thiab rau qee cov txheej txheem yuav tsum taboo. Nws yog qhov tsis yooj yim heev los hloov cov ntim khoom tib lub sijhawm. Qhib STEM GATE VALVES, TSIS TXHOB INSTALL underground, txwv tsis pub vim damp corrosion ntawm qia raug. Nqa daim tshev valve, kev teeb tsa kom ntseeg tau tias lub valve disc ntsug, kom lub nqa tau yooj yim. Lub viav vias kos valve, thaum ntsia los xyuas kom meej tias tus pin theem, thiaj li ua viav vias hloov tau. Lub siab txo valve yuav tsum tau muab ntsia rau ntawm cov yeeb nkab kab rov tav, thiab yuav tsum tsis txhob qaij nyob rau hauv ib qho kev taw qhia. (2) Valve installation kev tsim kho kev tsim kho kev tsim kho yuav tsum tau ceev faj, tsis txhob tsoo cov khoom uas ua los ntawm lub valve. Ua ntej INSTALLATION, LUB VALVE yuav tsum tau soj ntsuam xyuas cov kev qhia tshwj xeeb thiab cov qauv txhawm rau txheeb xyuas qhov kev puas tsuaj, tshwj xeeb tshaj yog rau qia. Kuj tig ob peb zaug kom pom tias nws yog skewed, vim hais tias thaum lub sij hawm kev thauj mus los, lub valve qia yog yooj yim rau ntaus crooked. Kuj *** khib nyiab hauv lub valve. Thaum lifting lub valve, txoj hlua yuav tsum tsis txhob muab khi rau lub handwheel los yog qia kom tsis txhob muaj kev puas tsuaj rau cov khoom no. Nws yuav tsum tau muab khi rau lub flange. Txoj kab uas lub valve txuas nrog yuav tsum tau muab ntxuav. Cov cua compressed tuaj yeem siv los tshuab hlau oxide filings, xuab zeb, vuam slag thiab lwm yam sundries. Cov khib nyiab no, tsis tsuas yog yooj yim los khawb qhov sealing nto ntawm lub valve, cov khoom loj ntawm cov khib nyiab (xws li vuam slag), tab sis kuj tuaj yeem thaiv lub valve me me, kom nws tsis ua haujlwm. Thaum INSTALLING THE SCREW VALVE, LUB SEALING PACKING (Xoo thiab txhuas roj los yog PTFE RAW khoom siv siv) yuav tsum tau qhwv rau ntawm cov yeeb nkab xov, tsis txhob nkag mus rau hauv lub valve, thiaj li zam lub valve nco ntim, cuam tshuam qhov nruab nrab ntws. Thaum txhim kho flange li qub, xyuam xim rau zawm cov bolts symmetrically thiab tusyees. Lub valve flange thiab cov yeeb nkab flange yuav tsum ua tib yam, qhov kev tshem tawm yog qhov tsim nyog, tsam lub valve ua rau siab dhau, txawm tias tawg. Rau cov ntaub ntawv nkig thiab tsis muaj zog ntawm lub valve, tshwj xeeb yuav tsum tau them nyiaj. Lub valve yuav tsum tau welded nrog cov yeeb nkab yuav tsum tau welded ua ntej, ces qhov kaw yuav tsum qhib tag nrho, thiab ces welded tuag. (3) Kev tiv thaiv valve ntsuas qee qhov valve yuav tsum muaj kev tiv thaiv sab nraud, uas yog kev txuag hluav taws xob thiab kev txuag txias. Cov txheej rwb thaiv tsev yog qee zaum tov nrog cov kab kub kub. Dab tsi ntawm lub valve yuav tsum yog cua sov lossis txias, raws li qhov yuav tsum tau ua. Raws li txoj cai, qhov nruab nrab ntawm lub valve kom txo qhov kub thiab txias ntau dhau, yuav cuam tshuam rau kev tsim khoom los yog khov lub valve, koj yuav tsum ua kom sov, txawm tias sib tov kub; Qhov twg lub valve yog liab qab, tsis zoo rau ntau lawm los yog ua rau Frost thiab lwm yam tsis zoo tshwm sim, koj yuav tsum tau txias. Cov ntaub ntawv rwb thaiv tsev yog asbestos, slag wool, iav ntaub plaub, perlite, diatomite, vermiculite, thiab lwm yam; Cov khoom cua txias yog cork, perlite, ua npuas ncauj, yas thiab lwm yam. (4) Bypass thiab ntsuas ib co li qub, ntxiv rau qhov tsim nyog cov chaw tiv thaiv, tab sis kuj muaj bypass thiab ntsuas. Ib tug bypass yog ntsia. Yooj yim kho lub ntxiab. Lwm yam li qub, kuj ntsia bypass. Bypass installation nyob ntawm valve mob, qhov tseem ceeb, thiab ntau lawm yuav tsum tau. (tsib) packing los hloov lub Tshuag valve, qee qhov ntim tsis tau zoo, thiab qee qhov tsis ua raws li kev siv nruab nrab, uas yuav tsum tau hloov cov ntim. Valve Hoobkas tsis tuaj yeem xav txog kev siv ntau txhiab ntau hom kev tshaj tawm, lub thawv ntim khoom ib txwm muaj cov hauv paus zoo tib yam, tab sis thaum siv, yuav tsum cia cov ntim hauv nruab nrab kom haum. Thaum hloov packing, nias nyob rau hauv ib ncig ntawm ib ncig. Txhua lub nplhaib seam rau 45 degrees yog qhov tsim nyog, lub nplhaib thiab lub nplhaib qhib 180 degrees. Qhov siab ntim yuav tsum xav txog lub leeway rau lub caj pas mus txuas ntxiv, thiab tam sim no nws yog ib qho tsim nyog yuav tsum cia qhov qis ntawm lub caj pas nias lub packing chamber mus rau qhov tsim nyog qhov tob, uas feem ntau tuaj yeem yog 10-20% ntawm tag nrho qhov tob. packing chamber. Rau qhov xav tau li qub, lub kaum sab xis sib koom yog 30 degrees. Lub seam ntawm lub nplhaib thiab lub nplhaib yog staggered 120 degrees. Ntxiv rau qhov ntim, tab sis kuj raws li qhov xwm txheej tshwj xeeb, kev siv roj hmab O-ring (natural roj hmab resistant rau 60 degrees Celsius tsis muaj zog alkali, butadiene roj hmab resistant rau 80 degrees Celsius roj siv lead ua, fluorine roj hmab resistant rau ntau yam corrosive. xov xwm hauv qab no 150 degrees Celsius) peb stacked polytetrafluoron nplhaib (resistant rau muaj zog corrosive xov xwm hauv qab no 200 degrees Celsius) nylon tais nplhaib (resistant rau 120 degrees Celsius ammonia, alkali) thiab lwm yam khoom muab tub lim. Ib txheej ntawm TEflon raw khoom daim kab xev tuaj yeem txhim kho cov nyhuv sealing thiab txo cov electrochemical corrosion ntawm lub valve qia. Thaum nias lub seasoning, tig lub qia tib lub sij hawm kom tag nrho ib ncig ntawm tusyees, thiab tiv thaiv kom tsis txhob tuag, zawm lub caj pas kom sib npaug, tsis tuaj yeem qaij.