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Cov kev hloov hauv hom thiab cov qauv ntawm li qub
Valve hom thiab qauv los ntawm 23rd tsab ntawm cov ntawv hloov mus rau lub tshiab version ntawm lub Appendix B "valve qauv"; 23rd tsab ntawm cov qauv ntawm qhov ntev ntawm Table 6 tau hloov mus rau qhov tshiab version ntawm Cov Ntawv Ntxiv C "Valve kawg-rau-kawg, lub ntsej muag-rau-ntsej muag qhov ntev ntawm Table C". Table 1 nyob rau hauv tus qauv, "qhov tsawg kawg nkaus txoj kab uas hla ntawm lub channel ntawm tag nrho txoj kab uas hla valve" nyob rau hauv lub deletion ntawm cov lus qhia PN, siv "Classxxx" los qhia cov qib siab. Raws li, lo lus "PN" tsis tuaj yeem tshwm sim rau txhua lub sijhawm, suav nrog cov npe npe, rau API 6D li qub yav tom ntej. Tshiab: Yog tias tsis muaj qhov tsawg kawg nkaus qhov loj me rau chav kawm siab thiab qhov loj ntawm cov li qub tau teev tseg hauv Table 1, qhov loj thiab sab hauv txoj kab uas hla yuav tsum tau txiav txim siab los ntawm kev pom zoo thiab txheeb xyuas ntawm daim ntawv teev npe.
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Kev hloov hauv kev tsim thiab kev suav
Cov khoom siv siab-cov kabmob tsim thiab kev suav xa mus rau cov qauv kev lees paub thoob ntiaj teb;
Ntxiv EN12516-2 industrial li qub - plhaub kev nyuaj siab suav Part II txoj kev suav;
1, qhov sib ntxiv ntawm ASME Boiler Pressure Vessel Volume II Cov Khoom Siv, Ntu D: Cov Khoom Siv Hluav Taws Xob, ua lub hauv paus rau kev tsim siv ANMEVIII code;
2, Pressure-TemperatureRatings (Pressure-TemperatureRatings) nyob rau hauv kev tshem tawm cov lus qhia txog PN, taw qhia tias: tag nrho cov hlau siab-cov kabmob qhov chaw thiab lub siab tswj cov khoom yuav tsum tau ua raws li "valve-temperature ratings" tsim;
3, qhov loj ntawm qhov kev qhia: thawj zaug sau cov yeeb nkab nominal loj (NPS), thiab tom qab ntawd sau qhov sib npaug nominal loj (DN) hauv kab lus, piv txwv li:
Pob valve: NPS12 (DN300)
Txo valve: NPS12 (DN300) X NPS10 (DN250)
4, ntxiv ib daim ntawv qhia - "flange standard size" los qhia txog lub convex flange, lub nplhaib sib koom ua ke zawj flange ntawm qhov loj, kam rau ua, zoo siab kam rau ua, nto roughness thiab lwm yam yuav tsum tau;
5, kev tsim cov khoom siv tsav xaiv, kev teeb tsa yuav tsum ua raws li cov cai ntawm API 6DX lossis ISO 12490; qhov no yog qhov yuav tsum tau ua tshiab; qhov siab tshaj plaws txoj kab uas hla ntawm lub handwheel tsis tshaj 1065mm;
6, lub chaw tsim khoom valve yuav tsum txheeb xyuas qhov siv tau ntawm qhov chaw ntawm lub lugs ntawm lub valve tiav thiab cov khoom siv ua haujlwm, nrog rau kev tsim tshwj xeeb, tsim khoom thiab ntawv pov thawj ntawm cov cuab yeej lug;
7, tso cai quab yuam hauv API6D 2nd 4 tsab ntawm 2004 ASMEVIII-2, AD132 qhia hauv cov ntawv nyeem. Thiab ASME BPVC Volume II, Tshooj D ntawm cov kev ntxhov siab kuj tseem suav nrog hauv tus qauv. Tensile stresses, shear stresses (xws li torsional shear stresses), thiab compressive stresses yuav tsum tau tsim nyob rau hauv raws li ASME BPVC Volume 8, tshwj tsis yog tias tus tsim kev ntxhov siab siv tus nqi Sm yog ntau tshaj 67% ntawm qhov tsawg kawg nkaus yield zog (SMYS). Tsis tas li ntawd, rau kev nyuaj siab shear ntshiab (xws li, shawls, shear rings, threads) qhov nruab nrab shear stress yuav tsum raug txwv rau 0.8 Sm. (Ceeb Toom: Tus qauv qhia tias muaj kev ntxhov siab Sm, tsis yog kev ntxhov siab.) Tso cai kev ntxhov siab nyob rau hauv siab: saib ASME BPVC IID seem.
8. Tus Qauv Length (FF lossis EE):
Cov qauv ntev ntawm lub qub version ntawm Table 2 ~ 6 tsiv mus rau lub tshiab version ntawm Appendix C.1 ~ C.5 "Valve kawg-rau-kawg, lub ntsej muag-to-face dimensions Table C"
Tus qauv ntev Dimension Tsawg dua los yog sib npaug rau NPS10 (DN250) kam rau ua yog ntxiv los yog rho tawm 1.5mm, qub version yog ntxiv lossis rho tawm 2.0mm
Yog tias lub valve nrog kev txhawb nqa ko taw tshaj qhov ntev ntawm cov qauv, ces qhov kev txhawb nqa ko taw yuav tsum tau muab tshem tawm tom qab kev teeb tsa.
9, kev ua haujlwm valve: lub valve tshiab hauv kev ua haujlwm ntawm lub zog los yog lub zog