ny

Hom thiab xaiv cov hlau li qub feem ntau siv hauv cov nroj tsuag tshuaj

Valves yog ib feem tseem ceeb ntawm cov raj xa dej, thiab cov hlau li qub yog siv dav hauv cov nroj tsuag tshuaj.Kev ua haujlwm ntawm lub valve feem ntau yog siv rau kev qhib thiab kaw, throttling thiab ua kom muaj kev nyab xeeb ntawm cov kav dej thiab cov khoom siv.Yog li ntawd, xaiv qhov raug thiab tsim nyog ntawm cov hlau li qub ua lub luag haujlwm tseem ceeb hauv cov nroj tsuag kev nyab xeeb thiab kev tswj cov dej.

1. Hom thiab siv cov li qub

Muaj ntau hom li qub hauv engineering.Vim tias qhov txawv ntawm cov kua siab, ntsuas kub thiab tshuaj siv cov tshuaj, suav nrog cov chaw sib tw, cov khoom siv sib txawv (cov khoom siv pov tseg, kos li qub, thiab plugs.Valves, pob li qub, npauj npaim li qub thiab diaphragm li qub yog cov khoom siv dav siv hauv cov nroj tsuag tshuaj.

1.1Rooj vag Valve

Feem ntau siv los tswj qhov qhib thiab kaw dej tsis haum, kev txwv tsis pub ua tau zoo, kev sib cais me me ntawm kev qhib thiab kaw, thiab cov qauv luv luv ntev.

Lub qia valve tau muab faib ua lub qia qaim thiab lub qia zais.Lub qhov rooj qhib qhov rooj valve yog tsim rau corrosive media, thiab cov qia rooj vag valve yog siv hauv tshuaj engineering.Kev zais cov rooj vag lub rooj zaum feem ntau yog siv hauv cov dej, thiab feem ntau yog siv nyob rau hauv qis-siab, xws li hlau cais thiab hlau cam.Cov qauv ntawm lub rooj vag muaj xws li lub rooj vag qhov rooj thiab lub rooj sib txig sib luag.

Cov rooj vag qhov rooj tau muab faib ua ib lub rooj vag thiab ob lub rooj vag.Parallel rams feem ntau yog siv rau hauv cov roj thiab roj tsheb thauj mus los thiab tsis yog siv rau hauv cov nroj tsuag tshuaj.

1.2Nres nres valve

feem ntau yog siv rau kev txiav tawm.Lub nres valve muaj cov kua dej loj, qhib thiab kaw lub zog loj, thiab muaj cov kev xav tau ntws.Piv nrog rau lub rooj vag li qub, lub ntiaj teb li qub muaj qhov zoo hauv qab no:

(1) Cov kev sib txhuam ntawm kev sib txhuam ntawm cov nplaim me dua li ntawm lub rooj vag valve thaum qhib thiab kaw txheej txheem, thiab nws yog hnav-resistant.

(2) Qhov siab qhib yog me dua li lub rooj vag valve.

(3) Lub ntiaj teb valve feem ntau tsuas muaj ib qho kev sib khi, thiab cov txheej txheem tsim khoom yog qhov zoo, uas yooj yim rau kev saib xyuas.

Ntiaj teb Valve, zoo li rooj vag valve, kuj muaj tus pas ci ntsa iab thiab ib tus pas nrig maub, yog li kuv yuav tsis rov ua lawv ntawm no.Raws li cov qauv sib txawv ntawm lub cev, lub nres nres tsheb nres muaj ncaj-dhau los, lub kaum thiab Y-hom.Qhov ncaj-los ntawm hom yog qhov feem ntau dav siv, thiab lub kaum sab xis yog siv qhov twg cov kua ntws kev hloov pauv 90 °.

Tsis tas li ntawd, lub tshuab loj dua thiab lub koob valve kuj tseem yog ib hom nres nres valve, uas muaj lub zog tswj hwm muaj zog dua li cov av tsis muaj zog.

  

1.3CHEVK Valve

Kos rau lub valve tseem hu ua ib-txoj kev valve, uas yog siv los tiv thaiv cov ntws rov qab ntawm cov kua dej.Yog li ntawd, thaum txhim kho lub vijtsam valve, them sai sai rau qhov kev khiav ntawm nruab nrab yuav tsum sib xws nrog cov kev taw qhia ntawm tus xub ntawm lub cim kos.Muaj ntau hom tshuaj xyuas li qub, thiab ntau cov tuam ntxhab muaj cov khoom sib txawv, tab sis lawv feem ntau muab faib ua viav vias thiab nqa hom los ntawm cov qauv.Viav vias check khij feem ntau suav nrog ib lub valve hom thiab ob chav valve hom.

1.4Npauj Npaim Valve

Npauj Npaim Valve yuav siv rau kev qhib thiab kaw thiab throttling ntawm cov kua nruab nrab nrog cov khib nyiab nruab nrab.Nws muaj kua dej me me, lub teeb yuag, cov qauv me me, thiab qhib sai thiab kaw.Nws yog qhov haum rau cov kav dej loj-txoj kab uas loj.Tus npauj npaim valve muaj qee yam kev hloov kho thiab tuaj yeem thauj cov slurry.Vim yog cov thev naus laus zis ua lag luam yav dhau los, cov npauj npaim li qub tau siv hauv cov dej tshuab, tab sis tsis tshua muaj nyob hauv cov txheej txheem cov tshuab.Nrog kev txhim kho cov khoom siv, kev tsim qauv thiab kev ua, npauj npaim li qub tau nce siv hauv cov txheej txheem cov tshuab.

Npauj npaim li qub muaj ob hom: muag foob thiab cov ntawv foob.Qhov kev xaiv ntawm cov muag muag muag thiab cov tawv ntoo tsuas yog nyob ntawm qhov ntsuas kub ntawm cov kua hauv nruab nrab.Tus kheej hais lus, kev ua haujlwm sib khi ntawm cov ntaub muag mos mos yog qhov zoo dua li ntawm lub cim nyuaj.

Muaj ob hom ntaub ntawm cov muag muag: roj hmab thiab PTFE (polystetrarafluoroethylene) valve rooj.Roj hmab Tog Npauj Npaim li qub (roj hmab-lined valve lub cev) feem ntau yog siv nyob rau hauv cov dej hauv tsev thiab muaj tus qauv nruab nrab.Hom Npauj Npaim hluav taws xob no tuaj yeem ntsia tau yam tsis muaj gaskets vim tias flange ntawm cov roj hmab hauv ob sab phlu tuaj yeem ua cov gasket.PTFE Rooj Npauj Npaim puas feem ntau siv nyob rau hauv cov txheej txheem tshuab, feem ntau eccentric lossis ob chav eccentric.

Muaj ntau ntau yam ntawm cov ntsaws ruaj ruaj, xws li tawv ruaj ruaj rau cov nplhaib (laminated ntsaws ruaj ruaj), thiab lwm yam. Vim tias cov chaw tsim khoom sib txawv, tus nqi to kuj txawv.Tus qauv ntawm lub cim npauj npaim lub valve yog qhov nyiam dua li peb npaug, uas daws cov teeb meem ntawm kev them nyiaj ntawm thermal.Ob npaug eccentric lossis triple eccentric tus qauv npauj npaim valve tseem muaj ob txoj kev hloov pauv ntawm kev kub siab) tsawg dua 80% ntawm txoj kev coj zoo (siab sab Tsis tshua muaj siab sab).Tus qauv tsim thiab xaiv yuav tsum sib khom nrog cov chaw tsim khoom.

1.5 KHWV KHIB

Lub flat dr valve muaj kua me me, yog li siv tau ntawm ob qho tib si kev tsim txiaj, tab sis qhib thiab kaw lub zog yog qhov loj, thiab tus nqi yog kuj muaj siab.Lub ntsaws stratity kab noj hniav tsis tau ua kua, tshwj xeeb yog cov khoom siv hauv cov khoom siv sib txawv yuav tsis ua rau muaj kuab paug, yog li cov ntsaws lub valve yuav tsum tau siv qee zaus.

Cov kev hla ntawm lub ntsaws valve tuaj yeem faib ua ncaj, peb-txoj kev, uas haum rau ntau cov kev faib khoom ntawm cov roj thiab kua kua.

Cov li qub tau muab faib ua ob hom: tsis muaj lub siab thiab lubricated.Cov roj-sealed plug valve nrog tsis yog lubrication ua cov roj ua yeeb yaj kiab ntawm lub ntsaws thiab cov khoom sib khi vim yog yuam lubrication.Nyob rau hauv txoj kev no, kev sib khi ua tau zoo dua, qhib thiab kaw lubrical dogres, tab sis nws yuav tsum tau txiav txim siab ntawm cov khoom siv, tab sis nws yuav tsum tau siv lubrication kev saib xyuas tsis tu ncua.

Tes Khaub Ncaws Pob ntawm cov Plug Valve yog txuas ntxiv thiab nyob ib puag ncig tag nrho cov ntsaws, yog li cov kua yuav tsis tiv tauj tus ncej.Ib qho ntxiv, lub ntsaws Valve muaj ib txheej ntawm cov hlau sib xyaw ua si raws li lub foob thib ob, yog li lub plug valve yuav nruj me ntsis tswj sab nraud to.Plug li qub tsis muaj ntim.Thaum muaj cov cai tshwj xeeb (xws li kev xau sab nraud tsis pub, thiab lwm yam), ntim yog tsim nyog raws li lub cim thib peb.

Tus qauv tsim qauv ntawm lub ntsaws ruaj ruaj tso cai rau lub ntsaws valve kom kho cov sealing valve zaum online.Vim tias lub sijhawm ua haujlwm ntev, kev sib khi saum npoo yuav hnav.Vim tias cov ntsaws yog tapered, tus ntsaws yuav tsum tau nias los ntawm ntsia liaj qhov rooj ntawm lub pob valve kom nws nruj nreem nrog lub rooj zaum hauv lub rooj mus kom tiav.

1.6 Pob Valve

Txoj haujlwm ntawm lub pob valve yog zoo ib yam li lub ntsaws Valve (lub pob valve yog ib tug derivative ntawm lub ntsaws valve).Lub pob valve muaj cov nyhuv sib khi zoo, yog li nws tau siv dav.Lub pob valve qhib thiab kaw sai sai, qhib thiab kaw lub zog me me, qhov tsis kam yog me me, thiab kev txij nkawm yog yooj yim.Nws yog qhov tsim nyog rau slurry, viscous kua thiab nruab nrab ntawm cov xov hluav taws xob nrog kev xav tau kev xav tau.Thiab vim tias nws tus nqi qis, cov li qub, siv dav ntau dua li plug li cas.Pob li qub feem ntau feem ntau yog muab cais los ntawm cov qauv ntawm lub pob, cov qauv ntawm lub cev valve, qhov txaus siab channel thiab cov khoom siv rooj.

Raws li cov qauv sib xws, muaj cov ntab ua pob li qub thiab pob khoom ruaj khov.Lub qub feem ntau yog siv rau kev diamet me me, tom kawg yog siv rau cov kab uas diameters loj, feem ntau dn200 (chav kawm 300 txog 300) raws li tus ciam.

Raws li cov qauv ntawm lub cev valve, muaj peb hom: ib hom, ob hom thiab peb-thooj hom.Muaj ob hom hom ib hom: Hom sab saum toj thiab sab-mounted.

Raws li daim ntawv khiav, muaj tag nrho cov cheeb thiab txo lub taub.Luv-txoj kab uas hla ib lub pob muaj cov khoom siv tsawg dua cov kab uas muaj ntau zaus thiab pheej yig dua.Yog tias cov txheej txheem ua haujlwm tso cai, lawv tuaj yeem suav tau tias nyiam.Pob valve ntws channel tuaj yeem faib ua ncaj, peb-txoj kev, uas haum rau ntau cov kev faib tawm roj thiab kua roj.Raws li cov ntaub ntawv siv lub rooj zaum, muaj cov muag muag muag thiab lub cim tawv.Thaum siv nyob rau hauv cov lus tshaj tawm lossis ib puag ncig sab nraud yog yuav hlawv, cov khoom lag luam muag khoom yuav tsum dhau cov khoom lag luam zoo nkauj thiab hluav taws xob ua pov thawj, xws li hauv raws li API607.Tib yam siv rau cov nqaij mos mos mos

1.7 Diaphragm Valve

Diaphragm valve tuaj yeem muab tso rau hauv ob qho tib si cov lus qhia, haum rau cov kev ntsuas siab, xeb tawm tsis muaj dej khov kho kua mis.Thiab vim hais tias lub tshuab ua haujlwm tau sib cais los ntawm nruab nrab channel, cov kua yog txiav tawm los ntawm elastic diaphragm, uas yog qhov tsim nyog tshwj xeeb rau cov khoom noj thiab kev kho zaub mov thiab kev kho mob thiab kev kho mob.Kev ua haujlwm ntawm qhov kub ntawm lub diaphragm valve yog nyob ntawm qhov kub tsis kam ntawm cov khoom siv diaphragm.Los ntawm cov qauv, nws tuaj yeem faib ua cov hom ncaj-los ntawm hom thiab Weir hom.

2. Xaiv cov ntawv sau kawg

Cov kev sib txuas tau siv ntawm Valve Kev Txuas Txuas, xov txuas ntxiv, taub qab vuam txuas thiab (rauv vuam txuas thiab (taub qab

2.1 Flange Txuas

Flange kev twb kev sib txuas yog conducive rau valve installation thiab disassembly.Lub valve kawg flange sealing cov ntaub ntawv nto tsuas yog suav nrog nto (FF), luag), tus nplaig thiab cov nkauj sib txuas thiab ntiv tes sib txuas saum npoo (RJ).Cov txheej txheem flange tau txais los ntawm api li qub yog series xws li ASMZ16.5.Qee zaum koj tuaj yeem pom chav kawm 125 thiab chav kawm 250 cov qhab nia ntawm Flanged Li Qub.Qhov no yog qib siab ntawm cam khwb cia hlau flanges.Nws yog tib yam li kev sib txuas me me ntawm chav kawm 150 thiab chav kawm 300, tshwj tsis yog tias cov chaw sib khi ntawm thawj ob yog lub dav hlau puv (FF).

Wafer thiab lug li cas yog tseem flanged.

2.2 Taub Qab Vuam Txuas

Vim yog lub zog siab ntawm lub pob tw-welded sib koom tes thiab kev sib khi zoo, cov li qub, muaj kev kub siab, cov zaub mov lom zem thiab tawg tau yooj yim.

2.3 (socketing vuam thiab xov txuas txuas

Feem ntau siv rau hauv cov pas dej uas lawv nominal loj tsis tshaj li DN40, tab sis tsis tuaj yeem siv rau cov kua dej nrog cov xeb corrosion.

Threaded kev sib txuas yuav tsum tsis txhob siv rau cov kav dej nrog cov xov xwm lom thiab sib xyaw ua ke, thiab tib lub sijhawm, nws yuav raug zam tau siv hauv kev thauj khoom hauv ntej.Tam sim no, nws yog siv nyob rau qee lub sijhawm uas lub siab tsis yog siab nyob rau hauv lub phiaj xwm.Cov xov xov ntawm cov raj xa hluav taws xob yog feem ntau tapered yeeb nkab xov.Muaj ob yam specifications ntawm tapered yeeb nkab xov.Lub khob hliav tshuaj Apex cov ces kaum yog 55 ° thiab 60 ° feem.Ob qho tsis tuaj yeem sib pauv.On pipelines nrog cov nplaim taws los yog muaj kev phom sij yuav tsum tau xov txuas ntxiv, lub npe tsis sib haum yuav tsum tsis pub tshaj dn20 nyob rau lub sijhawm no, thiab kaw vuam yuav tsum ua tom qab xov txuas txuas.

3. khoom siv

Cov khoom siv hauv lub valve suav nrog lub vaj tse nyob ruaj ruaj, interalals, gaskets, ntim thiab cov ntawv ceev.Vim tias muaj ntau cov ntaub ntawv valve, thiab vim qhov chaw txwv, kab lus no tsuas yog qhia me me qhia cov khoom vaj tsev nyob.Cov khoom lag luam hlau cov hlau nplaum muaj xws li cam khwb cia hlau, carbon hlau, hlau steel, hlau.

3.1 cam khwb cia hlau

Grey cam khwb cia hlau (A1262B) feem ntau yog siv rau cov roj qis thiab tsis pom zoo rau kev siv cov raj xa khoom ntawm cov txheej txheem txheej txheem.Cov kev ua tau zoo (lub zog thiab tawv) ntawm cov hlau ductab (A395) yog qhov zoo dua li cov hlau nrum cam khwb.

3.2 Cov hlau carbon

Cov khoom siv cov roj carbon ntau zaus hauv cov khoom siv steel hlau hauv kev tsim valve yog A2162WCB (Casting) thiab A105 (Forging).Saib xyuas tshwj xeeb yuav tsum tau them rau cov thawv hlau ua haujlwm tshaj 400 ℃ ntev ntev, uas yuav cuam tshuam lub neej ntawm lub valve.Rau cov li kub tsawg, siv feem ntau siv yog A3522LCB (Casting) thiab A3502LF2 (Forging).

3.3 Austenitic Stainless hlau

Cov khoom siv tsis muaj roj stainless hlau feem ntau yog siv rau hauv cov mob corrosive lossis ultra-dej kub kub.Cov khoom siv feem ntau yog A351-CF8, A351-CF8M, A351-CF3 thiab A351-CF3M;Cov kev siv tau sau cia yog A182-F304, A182-F316, A182-F304L thiab A182-F316L.

3.4 Alloy Steel Mater

Rau cov li qub-kub, A352-LC3 (casting) thiab A350-LF3 (Kev Zam Txim) feem ntau siv.

Rau cov ntsuas kub siab, feem ntau siv yog A217-WC6 (Casting), A182-F11 (Forging) thiab Forging), Forging).Txij li WC9 thiab F22 yog rau 2-1 / 4CO series, lawv muaj siab dua WC6 thiab F11 teej tug nyob rau ntawm 1-1 / 2mo series, yog li lawv tau muaj qhov kub siab dua.

4. tsav hom

Lub valve ua haujlwm feem ntau yog los ntawm phau ntawv hom.Thaum lub valve muaj qhov ntau dua lub siab dua lossis loj rau manually ua haujlwm ntawm lub valve, iav kis tau thiab lwm txoj kev ua haujlwm tuaj yeem siv.Kev xaiv ntawm lub valve tsav hom yuav tsum tau txiav txim siab raws li hom, nominal siab thiab nominal loj ntawm lub valve.Cov lus 1 qhia cov xwm txheej hauv qab cov iav uas iav yuav tsum txiav txim siab sib txawv.Rau cov chaw tsim khoom sib txawv, cov mob no yuav hloov me ntsis, uas tuaj yeem txiav txim siab los ntawm kev sib tham.

5. Cov ntsiab cai ntawm Kev Xaiv Valve

5.1 Cov qauv tseem ceeb yuav tsum tau txiav txim siab hauv kev xaiv valve

(1) Qhov xwm ntawm cov kua dej xa tuaj yeem cuam tshuam rau kev xaiv ntawm hom valve thiab valve cov khoom siv.

(2) txoj haujlwm yuav tsum tau (kev cai lossis txiav-tawm), uas feem ntau cuam tshuam rau kev xaiv ntawm hom valve.

(3) Kev Ua Haujlwm Kev Ua Haujlwm (Txawm hais tias nquag), uas yuav cuam tshuam rau xaiv ntawm valve hom thiab valve cov khoom.

(4) txaus cov yam ntxwv thiab kev sib txhuam ploj.

(5) Lub nominal loj ntawm lub valve (li qub nrog lub nroog loj muaj peev xwm tsuas pom nyob rau hauv ib qho kev txwv ntau yam ntawm valve hom).

(6) Lwm qhov kev cai tshwj xeeb, xws li kev sib txuas tsis siv neeg, kom siab siab sib npaug, thiab lwm yam.

5.2 Xaiv Xaiv

(1) Kev zam txim feem ntau yog siv rau kev diameters me me (DN≤40), thiab cov casttings feem ntau yog siv rau cov kab uas diamet (DN! 40).Rau qhov kawg flange ntawm cov forging valve lub cev, qhov sib xyaw ua ke forged valve lub cev yuav tsum tau nyiam.Yog hais tias lub flange yog welded mus rau lub cev valve, 100% kev tshuaj ntsuam xyuas yuav tsum tau nqa tawm ntawm Weld.

(2) Cov ntsiab lus carbon ntawm pob tw-welded thiab socket-welded carbon steel valve lub cev yuav tsum tsis txhob muaj ntau tshaj 0.25%, thiab cov pa roj carbon ntau dua 0.45%

Lus Cim: Thaum lub sijhawm ua haujlwm kub ntawm cov hlau tsis tshua muaj ntau tshaj li 425 ° C, lub xeev cov pa roj carbon ntau dua 1040 ° C Qhuav txias (CF8m ).

(4) Thaum cov kua dej thiab cov roj av tsis tuaj yeem siv, qee cov ntaub ntawv tshwj xeeb yuav tsum tau txiav txim siab, xws li R31803, thiab lwm yam.

5.3 Kev xaiv ntawm lub rooj vag valve

(1) Rigid tib lub qhov rooj feem ntau yog siv thaum dn≤50;Elastic ib lub rooj vag feem ntau siv thaum DN> 50.

(2) rau lub rooj vag sib txuas ib lub valve ntawm lub ntsej muag cryogenic, lub qhov cua yuav tsum qhib ntawm lub rooj vag ntawm lub siab sab.

(3) Cov rooj vag qis qis yuav tsum tau siv rau hauv kev ua haujlwm uas yuav tsum tau muaj qhov tsis tshua muaj paug.Tsawg-kawg lub qhov rooj li qub muaj ntau yam qauv, ntawm cov twj tso kua mis-hom qhov rooj li qub feem ntau yog siv rau hauv cov nroj tsuag tshuaj.

(4) Txawm hais tias lub rooj vag valve yog cov hom petrochemical ntau tshaj plaws.Txawm li cas los xij, rooj vag li cas yuav tsum tsis txhob siv nyob rau hauv cov xwm txheej hauv qab no:

① Vim tias qhov siab qhib yog qhov siab thiab qhov chaw xav tau rau kev ua haujlwm yog qhov loj, nws tsis haum rau qee qhov nrog qhov chaw ua haujlwm me me.

② Qhib qhib thiab xaus ntev, yog li nws tsis haum rau kev qhib ceev thiab kaw sijhawm.

Nws tsis haum rau kua nrog cov khoom ntim.Vim lub sealing nto yuav hnav, lub rooj vag yuav tsis kaw.

Tsis txhob haum rau kev nce qib.Vim tias thaum lub rooj vag valve yog ib nrab qhib, nruab nrab yuav tsim eddy tam sim no nyob sab tom qab ntawm lub rooj vag, thiab kev sib khi ntawm lub rooj valve kuj tseem tawg yooj yim.

⑤ kev ua haujlwm nquag ntawm lub valve yuav ua rau muaj kev hnav khaub ncaws ntev heev, yog li nws feem ntau tsuas yog haum rau cov haujlwm tsis txaus

5.4 Xaiv Lub Ntiaj Teb Valve

(1) Piv nrog rau lub rooj vag valve ntawm tib lub ntsiab lus, lub kaw-off valve muaj cov qauv ntev dua.Nws feem ntau yog siv nyob rau hauv lub xov tooj nrog DN≤250, vim tias kev ua haujlwm thiab tsim cov teeb meem loj yog qhov tsis zoo li tias ntawm lub taub me me tsis zoo.

(2) Vim muaj cov kua dej loj ntawm lub kaw-off valve, nws tsis haum rau cov khib nyiab thiab cov kua dej tawm nrog cov viscosity siab.

(3) Lub Rab Koob Valve yog lub qhov hluav taws xob kaw hluav taws xob nrog lub ntsej muag zoo nkauj, uas tuaj yeem siv rau kev hloov kho me me lossis ua piv txwv.Nws feem ntau yog siv rau kev diamet me me.Yog hais tias lub caliber loj, qhov kev hloov kho tseem yuav tsum tau ua, thiab siv lub throttle valve.Lub sijhawm no, lub valve clack muaj cov duab zoo li parabola.

(4) Rau kev ua haujlwm uas yuav tsum tau muaj qhov tsis tshua muaj dej, yuav tsum siv lub valve uas tsis muaj pa tawm.Low-leakage shut-off li qub muaj ntau cov qauv, ntawm cov twj tso kua mis-hom kaw li qub feem ntau siv hauv cov nroj tsuag tshuaj.

Lwj tawm hom globe li qub yog siv ntau dua li bellows hom rooj vag li qub, vim hais tias lub globe hom globe li muaj luv luv fwj thiab ntev dua lub neej.Txawm li cas los xij, billows li qub yog kim, thiab zoo li cov khoom siv (xws li cov ntaub ntawv, thiab lwm lub sijhawm, thiab cov ncauj lus ntawm tus kheej yuav tsum tau them nyiaj thaum xaiv lawv.

5.5 Kev xaiv ntawm Kos Valve

(1) Kab rov tav nqa daim tshev valve feem ntau yog siv nyob rau hauv lub sijhawm nrog DN≤50 thiab tuaj yeem ntsia tau rau ntawm cov kav dej kab rov tav xwb.Vertical nqa check li qub feem ntau yog siv nyob rau hauv lub sijhawm nrog DN≤100 thiab raug ntsia rau ntawm cov kav dej ntsug.

(2) Lub tshuab nqa nqa tuaj yeem xaiv nrog lub caij nplooj ntoos hlav, thiab kev sib khi ua haujlwm ntawm lub sijhawm no zoo dua qhov tsis muaj lub caij nplooj ntoos hlav.

(3) Qhov tsawg kawg ntawm txoj kab viav vias valve feem ntau DN> 50.Nws tuaj yeem siv tau ntawm cov kav kab rov tav lossis cov kav dej rov qab (cov kua dej yuav tsum yog los ntawm hauv qab mus rau saum), tab sis nws yooj yim rau kev ua rau cov phuam sov.Ob chav disc kos valve (ob chav disc) feem ntau yog wafer-savding valve, uas yooj yim rau cov pipeline layout, thiab yog tshwj xeeb siv rau ntawm txoj kab uas loj loj.Txij li thaum disc ntawm tus viav vias kos thawj zaug (ib yam Disc Kos Valve.

(4) Nyob rau hauv cov ntaub ntawv ntawm dej rauj, ib tug check valve nrog qeeb kaw ntaus ntawv thiab damping mechanism yuav raug txiav txim siab.Qhov no zoo ntawm lub valve siv cov nruab nrab hauv lub raj xa dej rau buffering, nws tuaj yeem tshem tawm cov raj rauj, tiv thaiv cov raj dej thiab tiv thaiv cov twj tso kua mis los ntawm ntws rov qab.

5.6 Kev xaiv ntawm ntsaws Valve

(1) Vim muaj teeb meem kev tsim khoom, tsis siv lub tshuab roj lubricated DN> 250.

(2) Thaum nws yuav tsum tau hais tias lub tiaj-kab noj hniav tsis tau ua kua, lub ntsaws lub valve yuav tsum tau xaiv.

(3) Thaum lub foob pob valve tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua, yog tias muaj cov pa tawm sab hauv, lub ntsaws valve tuaj yeem siv los hloov.

(4) Rau qee qhov kev ua haujlwm, qhov kub kom hloov pauv ntau zaus, qhov zoo tib yam ntsaws lub valve siv tsis tau.Vim tias kub hloov ua rau kev nthuav dav thiab kev sib txawv ntawm cov khoom siv valve, ntev ntev ntawm cov pob yuav xau ntawm lub valve kauj vab.Nyob rau lub sijhawm no, nws yog ib qho tsim nyog los txiav txim siab cov plug tshwj xeeb, xws li cov kev pabcuam hnyav ntawm xomox, uas tsis tuaj yeem tsim nyob hauv Suav teb.

5.7 Xaiv ntawm Pob Valve

(1) Lub pob saum toj kawg nkaus hauv nruab nrab tau kho tau online.Peb-thooj pob li qub yog feem ntau siv rau cov xov thiab qhov khoom sib txuas-welded.

(2) Thaum cov raj xa dej muaj pob-los ntawm system, tsuas yog tag nrho cov plaub hau li qub yuav siv tau.

(3) Cov nyhuv uas muag tau zoo dua li cov khoom siv nyuaj, tab sis nws tsis tuaj yeem siv ntawm ntau cov ntaub ntawv uas tsis yog xim hlau tsis zoo ib yam).

(4) yuav tsum tsis txhob siv nyob rau hauv qee zaus uas ua kua ntau ntxiv rau hauv txoj kab noj kab-kab noj hniav tsis pub.

5.8 Kev xaiv ntawm Npauj Npaim Valve

(1) Thaum ob qho kev xaus ntawm npauj npaim Valve yuav tsum tau disassembled, ib phau ntawv ntsa lossis flange npauj npaim valve yuav tsum tau xaiv.

(2) Qhov tsawg kawg ntawm txoj kab ntawm qhov nruab nrab npauj npaim valve feem ntau dn50;Qhov tsawg kawg ntawm txoj kab ntawm ECCENTRIC Npauj Npaim Valve feem ntau yog DN80.

(3) Thaum siv Triple Eccentric PTFE Lub Rooj Npauj Npaim Valve, U-puab lub rooj zaum tau pom zoo.

5.9 Xaiv Kev Xaiv Diaphragm Valve

(1) Txoj kev ncaj-los ntawm hom muaj kua dej tsis yeem, ntev qhib thiab kaw lub neej ntawm lub diaphragm tsis zoo li ntawm cov hom Weir.

(2) Lub Weir hom muaj kua dej tsis taus, qhib kev tawm tsam thiab kaw lub neej ntawm lub neej zoo dua li ntawm cov hom ncaj-los ntawm hom.

5.10 Tus yam ntxwv ntawm lwm yam ntawm kev xaiv valve

(1) Thaum tso cai siab tso tawm ntawm lub system yog me me, ib hom valve nrog tsawg cov kua dej tsis kam, ib qho ncaj-los ntawm pob valve, thiab lwm yam.

(2) Thaum kaw kaw sai-Rau me me diameters, cov plaub hau li qub yuav tsum tau nyiam.

(3) Feem ntau ntawm cov li qub ua haujlwm nyob rau ntawm-site muaj cov tes haujlwm.Yog tias muaj qee qhov kev ncua deb ntawm kev ua haujlwm kis, sprocket lossis pas nrig txuas ntxiv tuaj yeem siv tau.

(4) Rau cov kua dej viscous, slurries thiab media nrog cov khoom muaj, plug li qub, pob ntses yog li cas.

(5) Kom cov khoom huv, plug li qub, pob ntses, cov npauj npaim li xaiv (xws li cov tseev kom muaj, xws li cov kev xav tau polishing, thiab lwm yam).

(6) nyob rau hauv ib txwm muaj tshwm sim, li qub nrog kev ntsuas siab tshaj (suav nrog) chav kawm 900 thiab DN≥ siv lub pob hluav taws xob nplua nuj (lub siab foob pob liab qab);Li qub nrog kev ntsuas siab qis dua (suav nrog) chav kawm 600 siv Bolted li qub cover (bolted bonnet), rau qee cov kev ua haujlwmHauv qee qhov kev ua haujlwm qis thiab ib txwm muaj-qhov kub-rau cov koom haum koom siab (cov pob bonnet) tuaj yeem siv, tab sis cov qauv no feem ntau tsis siv.

(7) Yog tias lub pob hluav taws xob yuav tsum tau muab tso kom sov lossis txias, cov ntaub pua taw rooj yuav tsum tau ntev ntawm qhov txuas nrog lub valve cov txheej txheej, feem ntau tsis muaj ntau tshaj 150 hli.

(8) Thaum lub caliber tseem me me, yog lub rooj valve yog deformed thaum lub sij hawm kev kho cua sov lossis lub raj kub ntev kawg ntawm qhov kawg yuav tsum tau siv.

(9) Li qub (tshwj tsis yog cov tshuaj txiav) rau cov tshuab cryogenic (hauv qab -46 ° C) yuav tsum siv txuas ntxiv Bonnet Neck qauv.Lub pob valve yuav tsum tau kho nrog kev kho mob nto cuam tshuam kom tiv thaiv lub pob valve thiab cov pob zeb ntim ntawm khawb thiab cuam tshuam rau lub foob.

  

Ntxiv rau kev txiav txim siab txog cov qauv saum toj no thaum xaiv cov qauv, cov txheej txheem yuav tsum tau txiav txim siab kev nkag siab zoo kom ua qhov kawg ntawm daim ntawv valve.Thiab nws yog ib qho tsim nyog los sau ib daim ntawv valve, cov ntaub ntawv valve cov ntaub ntawv yuav tsum muaj cov ntsiab lus hauv qab no:

(1) Lub npe, nominal siab, thiab nominal loj ntawm lub valve.

(2) Tsim qauv thiab kuaj xyuas cov qauv.

(3) valve valve.

(4) valve qauv, Bonnet qauv thiab valve kawg kev twb kev txuas.

(5) Cov Khoom Siv Vaj Huam Sib Luag Valve, Lub Rooj Zaum thiab Valve Phaj Sealing Cov Khoom Siv Cov Khoom Qub, Cov Khoom Siv Sab Nraud, Cov Khoom Siv Hauv Valve, thiab lwm yam.

(6) tsav hom.

(7) ntim khoom thiab tsheb thauj mus los.

(8) sab hauv thiab sab nraud tiv thaiv corrosion.

(9) cov kev xav tau zoo thiab seem rau qhov chaw yuav tsum tau ua.

(10) tus tswv yuav tsum tau thiab lwm cov cai tshwj xeeb (xws li cim, thiab lwm yam).

  

6. Qhov hais lus xaus

Valve muaj txoj haujlwm tseem ceeb hauv cov tshuaj lom neeg.Kev xaiv ntawm cov kav dej hluav taws xob yuav tsum tau ua raws li ntau yam xws li theem pib (kua, cov ntsiab lus, thiab corrosion thaj tsam ntawm cov kua dej tau thauj khoom hauv cov raj xa dej.Ib qho ntxiv, kev ua haujlwm yog kev ntseeg siab thiab teeb meem-dawb, tus nqi yog qhov tsim nyog thiab kev tsim khoom lag luam tseem yog qhov kev txiav txim siab tseem ceeb.

Yav dhau los, thaum xaiv cov khoom siv hluav taws xob hauv engineering tsim, feem ntau tsuas yog cov plhaub khoom tau txiav txim siab xws li cov khoom siv sab hauv tsis quav ntsej.Kev xaiv sab hauv cov ntaub ntawv sab hauv yuav ua rau lub neej ua haujlwm sab hauv

Kev txiav txim los ntawm cov xwm txheej tam sim no, API li qub tsis muaj kev sib koom tes ua ke, thiab txawm tias lub teb chaws valve muaj cov khoom sib koom tes thiab lwm yam khoom, nrog rau lwm yam tshwj xeeb.Yog li ntawd, nyob rau hauv txoj haujlwm engineering, lub valve yuav tsum tau piav qhia nyob rau hauv kev nthuav dav los ntawm compiling lub valve cov ntaub ntawv ntawv.Qhov no muab kev yooj yim rau kev xaiv valve, kev sib cav, commissioning thiab spare yam ua haujlwm, thiab txo qhov tshwm sim ntawm qhov yuam kev.


Lub Sijhawm Post: Nov-13-2021