Daim ntawv thov Scope thiab cov kev cai ntawm lub hwj chim chaw nres tsheb li qub (3)
Valve yog ib qho tseem ceeb ntawm cov cuab yeej ua tiav loj, feem ntau yog siv rau kev txiav tawm, throttling, tswj lub siab thiab hloov pauv kev coj ua ntawm nruab nrab (khoom siv, dej, chav, huab cua thiab roj, thiab lwm yam) hauv cov txheej txheem kav dej. Qhov zoo ntawm lub valve ncaj qha cuam tshuam rau kev tsim khoom ntawm cov cuab yeej no, kev ua haujlwm nyab xeeb thiab ib puag ncig muaj kuab paug, thiab ua lub luag haujlwm tseem ceeb. Valve ntau yam thiab specifications muaj ntau, feem ntau yog lub rooj vag valve, lub ntiaj teb valve, kos valve, pob valve, kev ruaj ntseg valve, siab txo valve, ntxiab valve, npauj npaim valve thiab tshwj xeeb lub hom phiaj valve, siv dav, ntau npaum li cas. Raws li kev txheeb cais tsis tiav thiab kev kwv yees ntxhib, hauv cov khoom siv ua tiav loj, cov peev txheej valve suav txog li 3% - 5% ntawm tag nrho cov peev txheej hauv cov khoom siv.
(l) Valve chaw tsim khoom thiab cov xwm txheej tsim khoom
Lub teb chaws nyob rau hauv lub nroog theem saum toj no cov kev tswj ntawm valve tuam txhab uas muag txog 180, nrog rau 19 lub tuam txhab tseem ceeb, muaj ib tug tej yam scale ntawm lub zos thiab ib tug neeg lub lag luam ntau tshaj 2000, me me manufacturers nyuaj rau txheeb cais, lub zos cov lag luam thiab cov neeg lag luam raug faib nyob rau hauv Jiangsu thiab Zhejiang thiab Central Plains cheeb tsam. Hauv kev lag luam valve, lub xeev cov tuam txhab loj thiab nruab nrab, tshwj xeeb tshaj yog cov lag luam qaum teb, tseem muaj txiaj ntsig zoo hauv kev tsim cov valve thiab kev siv zog. Qee cov tuam txhab lag luam no tau siv cov xuab zeb kab ua qauv, cov khoom tseem ceeb ntawm lub valve hauv CNC tshuab cuab yeej, cov kab tsis siv neeg lossis cov cuab yeej siv tshuab ua ke, sealing nto nrog sib npaug sib cais los ntawm cov tshuaj tsuag vuam tshuab, valve tsim daim ntawv thov CAD technology, peb-seem khoom. kev ua qauv. Advanced thev naus laus zis tau txhawb nqa kev txhim kho ntawm valve ntau lawm qib thiab cov khoom zoo. Tab sis feem ntau valve manufacturers casting smelting cov cuab yeej qub, feem ntau yog phau ntawv qauv, machining rau cov cuab yeej siv tshuab thiab ib qho cuab yeej txiav, cov cuab yeej tshawb nrhiav tsis zoo tag nrho lossis tsis ua raws li tus qauv. Nyob rau hauv xyoo tas los no, qee cov tuam txhab me me thiab nruab nrab los ntawm kev ntxiv dag zog rau kev tswj hwm cov neeg ua haujlwm, tso lub hauv paus, cov cuab yeej siv thiab tuav cov kev hloov kho, qib kev siv tshuab tau maj mam txhim kho, qib khoom, tuav cov khoom zoo, tuav lub lag luam, cov txiaj ntsig kev lag luam loj, nrog cov lag luam loj lossis txha caj qaum los tawm tsam nrog lub peev xwm, nws lub zog thiab kev loj hlob zeem muag tsis tuaj yeem kwv yees.
(2) Qib khoom
Los ntawm kev ua raws li lub teb chaws tus qauv, kev hloov technology, ntxiv dag zog rau qhov kev xeem thiab nrhiav kom tau txhais tau tias, cov khoom qub hloov thiab txhim kho cov theem ntawm kev tsim thiab txheej txheem, theem ntawm valve khoom nyob rau hauv peb lub teb chaws tau zoo heev nyob rau hauv ze li ntawm 20 xyoo, ntau yam specifications, tshwj xeeb tshaj yog nyob rau hauv nyuaj foob npauj npaim valve, lub rooj vag tiaj tus valve thiab lub zog foob pob valve ntawm pawg thiab cov khoom tau nce sai (14 hom valve uas twb muaj lawm ze li ntawm 2000 series, Ntau tshaj 12,000 specifications). Ntawm lawv, qhov ntim ntawm ntau yam zoo tib yam li qub tau nce mus txog qib 1980s txawv teb chaws, cov li qub hauv cov khoom tsim thiab cov khoom siv thiab lwm yam ntawm lub valve tsim tawm txawv teb chaws nyob rau xyoo tas los no zoo sib xws, tuaj yeem tsim raws li tus qauv ntawm cov kev cai txawv teb chaws, tab sis nyob rau hauv cov khoom zoo tsis ruaj khov txaus, muaj qee qhov sib txawv nrog cov teb chaws tsim. Tab sis nyob rau hauv ib co tshwj xeeb li qub, xws li tsis siv neeg tswj valve, nyuaj foob pob valve, * * me me ntws valve, tshauv slag valve, lub ntsiab chav cais valve thiab stabilizer nyem valve, thiab lwm yam), siab parameter valve (xws li siv qhov kub thiab txias. siab tshaj 700 ℃, caliber tshaj lm pob valve), valve cov ntaub ntawv (hydrogen sulfide resistant steel khoom, urea thiab carbon fiber composite cov ntaub ntawv), thiab qhov sib txawv nrog txawv teb chaws valve actuator, thiab lwm yam loj, ntau yam tsis txaus, yuav tsum yog los ntawm cov kev taw qhia ntawm technology. (nrog rau kev taw qhia txog kev siv lub valve rov qab tsim) thiab cov txheej txheem kev ua haujlwm maj mam los daws. Li qub, lub peev xwm txhawb nqa hauv tsev tuaj yeem ua tau raws li 300000 t / a ethylene, 300000 t / a ammonia, urea, 60000 t, 520000 t / a ntawm 80000 t / a / high-pressure polyethylene, polypropylene, 60 ethylene , 80000 t / a vinyl chloride, 50000 t / ib propylene holt, 30000 t / a, acetaldehyde, 45000 t / a, 2.5 lab t / a refinery, 3 butadiene 10,000 m3, nuclear fais fab 3 MW, 0. fais fab nroj tsuag thiab cov kav xa mus ntev thiab lwm yam khoom siv. Cov nplai ntawm cov khoom ua tiav loj hauv cov teb chaws txawv teb chaws tau nthuav dav, txhawb cov qib ntawm valve txuam nrog nws. Kuj tseem muaj cov qauv kev loj hlob zoo li no hauv Suav teb, tab sis muaj qhov sib txawv loj hauv kev txhawb nqa muaj peev xwm piv nrog cov teb chaws tsim, feem ntau cuam tshuam nrog cov khoom tshwj xeeb, cov khoom siv siab siab, cov tshuab tswj thiab cov cuab yeej tsav tsheb.
Daim ntawv thov Scope thiab cov kev cai ntawm lub hwj chim chaw nres tsheb li qub (III) Cov qauv kev npaj cov khoom yuav tsum ua raws li cov kev cai ntawm JB/T4018. Thaum lub plhaub yog WCB thiab WC1, WC6 thiab WC9 cov ntaub ntawv, cov khoom siv valve yuav tsum muab tso ua ke raws li txoj kev teev tseg hauv JB / T4018 ntawm carbon steel thiab cr al-V alloy steel feem. Qhov rooj kos npe thiab kev txheeb xyuas cov lus pom zoo xim JB/T 106. Rau lub cev ua los ntawm WCB, kev txheeb xyuas thiab pleev xim yuav tsum xa mus rau cov khoom siv carbon steel; Rau lub cev valve ua los ntawm WC1, WC6, WC9, cov txheej txheem txheeb xyuas yuav tsum xa mus rau cov khoom siv hlau alloy. Hloov cov xim xim yog tso cai ntawm tus neeg yuav khoom thov.
Kev sib txuas: Daim ntawv thov Scope thiab cov kev cai ntawm lub hwj chim chaw nres tsheb li qub (II)
8 Kev kos npe, ntim, khaws cia thiab kev thauj mus los
8.1 npe
8.1.1 Txoj kev sau cov qauv ntawm cov khoom yuav tsum ua raws li cov kev cai ntawm JB/T4018. Thaum lub plhaub yog WCB thiab WC1, WC6 thiab WC9 cov ntaub ntawv, cov khoom siv valve yuav tsum muab tso ua ke raws li txoj kev teev tseg hauv JB / T4018 ntawm carbon steel thiab cr al-V alloy steel feem.
8.1.2 Thaum lub valve lub cev yog WCB, WC1, WC6, WC9 cov khoom, nws cov naj npawb tuaj yeem raug cim rau ntawm lub valve lub cev.
8.1.3 Hlau nameplates yuav tsum tau ntsia rau ntawm cov khoom tsim nyog valve, thiab txoj hauj lwm khi thiab qhov loj ntawm nameplates yuav tsum ua raws li cov qauv kos duab. Thov xa mus rau Daim Ntawv Ntxiv F rau cov ntsiab lus ntawm daim ntawv teev npe
8.1.4 Cov khoom tseem ceeb thiab lub siab welds uas dhau qhov kev tshuaj xyuas yuav tsum raug suav los yog cim ncaj qha, thiab cov cim yuav tsum raug cim rau hauv thaj chaw uas muaj kev ntxhov siab qis tshaj plaws, tshwj xeeb tshaj yog kom tsis txhob muaj kev ntxhov siab hauv cheeb tsam, kev hloov pauv thiab vuam kub cuam tshuam cheeb tsam, uas yuav tsis cuam tshuam qhov kev txiav txim ntawm cov txiaj ntsig ntawm kev sim tsis muaj kev puas tsuaj.
8.1.5 Valve marking and identification painting Proposal JB/T 106. Rau lub cev ua los ntawm WCB, kev txheeb xyuas thiab pleev xim yuav tsum xa mus rau cov kev cai ntawm cov ntaub ntawv carbon steel; Rau lub cev valve ua los ntawm WC1, WC6, WC9, cov txheej txheem txheeb xyuas yuav tsum xa mus rau cov khoom siv hlau alloy. Hloov cov xim xim yog tso cai ntawm tus neeg yuav khoom thov. Lwm cov cim yuav tsum tau ua raws li cov qauv tsim nyog.
8.2 kev ntim khoom
8.2.1 Ua ntej ntim, lub valve yuav tsum tau pleev xim rau raws li 8.1.5, thiab cov khoom tsis pleev xim los yog cov txheej txheem txheej txheem uas tsis muaj xeb yuav tsum tau coated nrog cov roj los tiv thaiv xeb.
8.2.2 Lub sealing nto, welded kawg, threaded kawg thiab lub puab kab noj hniav ntawm lub valve ntawm ob kawg ntawm lub flange yuav tsum tau tiv thaiv los ntawm plugs los yog npog daim hlau, thiab yuav tsum tau yooj yim rau assemble thiab disassemble.
8.2.3 Cov khoom siv valve yuav tsum tau ntim thiab xa mus raws li daim ntawv teev npe: Cov li qub uas muaj ntim loj tuaj yeem ntim liab qab raws li qhov kev txiav txim yuav tsum tau ua, tab sis nws yuav tsum xyuas kom meej tias lawv yuav tsis raug puas tsuaj thaum lub sij hawm thauj mus los.
8.3 tiv
Valve cov khoom yuav tsum tau khaws cia rau hauv ib chav qhuav, qhov cua thiab piled kom huv si raws li xav tau. Tsis pub qhib cia lossis stacking ntawm cov khoom.
8.4 tsheb thauj mus los
8.4.1 Thaum lub sij hawm thauj mus los, lub valve disc yuav tsum raug kaw thiab daim tshev valve disc yuav tsum raug kho; Lub ntsaws valve yuav tsum nyob rau hauv txoj hauj lwm unscrew; Lub luj ntawm lub lever valve yuav tsum tau muab tshem tawm ntawm lub lever, muab tso rau nyias, thiab lub lever tsau. Sab flange lossis ceg yeeb nkab vuam zawj ntawm ob qho kawg ntawm lub valve channel yog thaiv nrog npog phaj lossis ntsaws los tiv thaiv cov av thiab cov dej phwj tuaj nkag.
8.4.2 Qhov cuam tshuam ntawm qia yuav tsum raug tiv thaiv.
9 Kev xa cov ntaub ntawv
Cov ntaub ntawv xa khoom suav nrog daim ntawv pov thawj khoom, daim ntawv teev cov khoom ntim, thiab cov khoom siv thiab cov lus qhia ua haujlwm. Cov ntsiab lus tseem ceeb tau qhia hauv Daim Ntawv Ntxiv G, H thiab kuv raws
Cov ntawv ntxiv A
(Informative Appendix)
xaj
A.1 Daim ntawv qhia kev txiav txim siab yog muab rau tus neeg yuav khoom hauv Table A.1.
Table A.1 Cov kev cai xaj xaj
A.2 Table A.2 muab cov lus qhia ntxiv rau cov neeg yuav khoom rau kev txiav txim tshwj xeeb rau ntau hom li qub.
Table A.2 Kev txiav txim tshwj xeeb
Daim ntawv ntxiv B
(Normative Appendix)
Siab - ntsuas kub
B.1 Table B.1 ~ B.17 qhia tias cov khoom siv plhaub yog 20.25. Zg200-400. Zg230-450.15crmo.zg20crmo.12crmo v. 15Cr1 Molv.zG20CrMov.zG15Cr1Mo1v.1Cr5Mo. ZG1Cr5Mo. 1Cr18Ni9Ti thiab ZG1Cr18Ni9Ti li qub, Nws lub siab nominal yog 0.1 Mpa.0.25 Mpa.0.4 Mpa.0.6 Mpa.1.0 Mpa.1.6 mpa.2.5 Mpa.4.0 Mpa.6.3 Mpa.10.0 Mpa.10.16. Siab kom kub ntawm 25.0 Mpa.32.0 Mpa.42.0 Mpa.50.0 Mpa.63.0 MPa.
B.2 Tables B.18 txog B.21 qhia cov chav kawm siab-kub qhov tseem ceeb ntawm li qub nrog cov khoom siv plhaub WCB.WC1.WC6.WC9 rau phaus chav kawm 150.300.600.900.1500.2000.2500.3500.4500 raws.
Post lub sij hawm: Lub Xya hli ntuj-26-2022
