IbAPI 6D DBB pob valveyog ib lub hlis twg -tig kev rho tawm valve uas siv ob lub rooj zaum ywj pheej thiab lub cev -kab noj hniav los ntshav los cais cov kav dej thiab ua pov thawj tias nws muaj kev nyuaj siab ua ntej pib ua haujlwm. Ua rau API 6D nrog tus kheej -relieving (SPE) rooj, nws npog NPS 2–56 (DN 50–1400), ASME Class 150–2500, thiab lub cev cov ntaub ntawv los ntawm ASTM A216 WCB rau duplex F51, ntsuas los ntawm −46℃rau +210℃.
Ob chav thaiv thiab los ntshav (DBB) pob valve yog peb lub hlis twg -tig kev rho tawm valve uas muab qhov tseeb ob- thaiv kev sib cais ntawm DBB muaj nuj nqi los ntawm txoj kev ntws ntawm lub pob valve. API 6D txhais ob chav thaiv thiab los ntshav raws li ib qho valve nrog ob qhov chaw zaum uas thaiv qhov siab ntawm ob qho kawg thiab muab cov kab noj hniav. Lub pob valve ua tiav qhov no los ntawm lub caij nplooj ntoos hlav-energized, tus kheej-reliving rooj uas txhua tus dhau lub rooj zaum ntawm ob sab ntawm 1.1 npaug ntawm qhov ntsuas siab. Raws li API 6D DBB pob valve rau roj thiab roj, LNG, refining thiab tshuaj ua dej num, nws yog tsim nyob rau hauv ASTM A216 WCB rau ASTM A995 duplex thiab hloov ob lub pob valve thiab ib tug spool los txiav flange pob qij txha txog li 66%.
Technical Specifications
DBB pob valve qhov loj yog NPS 2-56 (DN 50-1400) thiab DBB pob valve siab chav kawm spans ASME Chav Kawm 150-2500; floating designs pab rau NPS 8 / Class 600 thaum trunnion mounted designs npog tag nrho cov ntau yam, yog li lub floating vs trunnion pob valve xaiv raws li qhov loj thiab siab. Cov txiaj ntsig sab nraud qhov no tau hais los ntawm ib daim ntawv teev cov phiaj xwm.
Khoom siv ntau yam
| Parameter | Txheem ntau yam | Nco tseg |
|---|---|---|
| Loj | NPE 2-56 (DN 50-1400) | Floating ntau rau NPS 8 / Chav Kawm 600; trunnion npog tag nrho |
| Chav kawm siab | ASME Chav Kawm 150-2500 (PN 16-PN 420) | API 6A Wellhead versions ncav cuag 15,000 psi |
| Kub | −46℃rau +210 degree | Extended bonnet rau cryogenic; hlau rooj rau +540 degree |
| Tus qauv tsim | API 6D, ASME B16.34, EN ISO 17292 | Qhov project specification tswj yog hais |
| Ntsej muag -rau- ntsej muag | API 6D / ASME B16.10 | B16.10 luv luv qauv rau NPS Ntau dua lossis sib npaug rau 24 |
| Xaus | RF, RTJ, BW, SW | ASME B16.5 / B16.47 / B16.25 / B16.11 |
| Npog | Full / txo | Tag nrho bore rau piggable kab |
| Kev ua haujlwm | Qib, iav, pneumatic, hluav taws xob, hydraulic | ISO 5211 actuator ncoo |
| Kev npaj rooj zaum | DBB (SPE/SPE), DIB-1 (DPE/DPE), DIB-2 (SPE/DPE) | Xeev ntawm kev txiav txim |
Lub cev thiab cov khoom siv trim (yield zog)
| Khoom siv (ASTM) | Hom | Min. Tawm tswv yim (MPa) | Min. Tensile (MPa) |
|---|---|---|---|
| A216 gr. WCB | Cam khwb cia carbon steel | 250 | 485 |
| ASTM A352 Gr. LCC | Cast low -temp carbon steel | 240 | 450 |
| A105 / A350 LF2 | Forged carbon / LT carbon | 250 | 485 |
| A182 F304 / F316 | Stainless hlau 304/316 | 205 | 515 |
| ASTM A351 CF8M Txheem: | Khiav 316 SS | 205 | 485 |
| A995 Gr. 1A (F51) | Duplex | 450 | 655 |
| A182 F51 / F53 | Duplex / super -duplex | 450 / 550 | 655 / 795 |
Kev xaiv cais: DBB vs DIB
| Kev npaj | Rooj | Cavity nyem | Thaum twg los qhia |
|---|---|---|---|
| DBB | 2 × SPE (tus kheej-relieving) | Automatic rau kab | Cov kav dej txheem, kev pabcuam ua kua, thermal-kev txhawj xeeb |
| DIB-1 | 2 × DPE (bidirectional) | Sab nraud nyem valve yuav tsum tau | Kev cais tawm roj tseem ceeb, ESD, rov ua dua |
| DIB-2 | 1 SPE + 1 DPE | SPE sab tus kheej -relieves | Kev cais lub nkoj xav tau kev taw qhia rov ua dua |
Nco tseg:DBB yog daim ntawv muaj peev xwm, tsis yog tsev neeg valve. Ob chav thaiv thiab cov hlab ntsha tuaj yeem ua tau raws li lub pob valve, lub ntsaws valve lossis ib qho sib txuas ua ke - thiab - los ntshav los ua ke; lub ntsaws valve tseem tuaj yeem yog DBB valve. API 6D rooj vag valve yog ib qho - thaiv- thiab - ntshav (SBB). Nco ntsoov xyuas lub rooj zaum ntawm qhov kev txiav txim, vim hais tias cov khoom npe ib leeg tsis txhais tau qhov kev thaiv.
Daim ntawv thov
API 6D DBB pob valve tau teev nyob rau txhua qhov chaw ntawm cov kav dej yuav tsum tau muab cais tawm thiab xyuas kom muaj kev ntxhov siab ua ntej kev sib cais, kev saib xyuas, lossis kev ntsuas siab.
Pipeline cais thiab pigging:API 6D DBB pob valve yog lub ntsiab -kab thaiv valve ntawm cov roj thiab roj kab ntawm NPS 2 txog NPS 56 (DN 50–1400). API 6D tsim nyog rau qhov kev pabcuam xa mus rau Chav Kawm 2500, thiab qhov chaw nres nkoj ntshav lees paub tias ob lub rooj zaum tuav ua ntej kev tshuaj xyuas lossis vuam khi- rau pigging.
Metering thiab terminal chaw nres tsheb:Ntawm kev saib xyuas-hloov metering skids thiab tank- ua liaj ua teb terminals, lub valve cais ib lub meter raj los yog twj tso kua mis teeb kom nws muaj peev xwm depressurized raws li pov thawj ntawm xoom zog. Qhov 1.1 × rated- qhov ntsuas lub rooj zaum siab los ntawm txhua sab, xav tau los ntawm API 6D, muab cov ntaub ntawv xau- nruj kev sib cais uas ntsuas nyiaj txiag ntsuas thiab qhov ntsuas kev nyab xeeb ntawm lub davhlau ya nyob twg xav tau.
Kev kaw thaum muaj xwm ceev thiab HIPPS:Nyob rau hauv ESD thiab siab - siab ncaj siab - kev tiv thaiv kab ke, lub trunnion mounted API 6D pob valve nrog DBB kev sib cais muab lub nrawm, rov ua dua thaiv uas tiv thaiv cov khoom siv qis los ntawm kev kub siab dhau. API 6D trunnion designs nqa lub rooj zaum ntawm cov kabmob, ua kom lub cev muaj zog torque kwv yees los ntawm Chav Kawm 150 txog 2500 thoob plaws NPS 2-56 ntau yam.
Offshore thiab qhov chaw -txoj hlua khi-ins:Qhov twg lub platform lossis skid tsis tuaj yeem haum rau ob qhov sib txawv ntawm qhov sib txawv thiab cov spool, ib qho API 6D DBB pob valve hloov qhov sib dhos thiab txiav flange pob qij txha txog li 66%. Qhov hnyav poob mus txog 60%, thiab lub cev compact eases layout thiab txij nkawm nyob rau hauv offshore modules.
Refinery thiab petrochemical manifolds:Nyob rau hauv refineries thiab tshuaj nroj tsuag, lub valve cais cov txheej txheem seem nqa hydrocarbons, chav los yog aggressive media yog li ntawd lawv yuav qhib rau kev kho. Lub cev cov ntaub ntawv nthuav dav ASTM A216 WCB, A350 LF2, A182 F316 thiab duplex F51, thaum hluav taws kub - nyab xeeb API 607 thiab ISO 15848-1 cov khoom ntim qis uas hais txog cov nroj tsuag kev nyab xeeb thiab kev txwv tsis pub tawm.
FAQ
Dab tsi yog qhov txawv ntawm DBB thiab DIB pob valve?
DBB siv ob tus kheej -relieving (SPE) rooj zaum thiab vents kab noj hniav overpressure rau txoj kab txiav. DIB-1 siv ob ob -piston-cov nyhuv (DPE) lub rooj zaum rau ob txoj kev rov ua dua tab sis xav tau ib qho kev tshem tawm sab nraud. DIB-2 khub ib SPE thiab ib lub rooj zaum DPE. Qhov kev xaiv ua raws qhov kev pheej hmoo ntawm kev sib cais, tsis yog lub npe khoom.
Qhov loj npaum li cas thiab qib siab npaum li cas API 6D DBB pob valve npog?
Standard mov spans NPS 2–56 (DN 50–1400) thiab ASME Class 150–2500 (PN 16–PN 420). Floating designs muaj ntau txog NPS 8 / Chav Kawm 600; trunnion mounted designs npog tag nrho ntau yam. Me-cov ntsuas ntsuas ntsuas tau khiav NPS 1/2–2.
Cov ntaub ntawv dab tsi xav tau rau API 6D DBB pob valve hais?
Xa hom valve, qhov loj me thiab DN, ASME chav kawm, lub cev thiab cov khoom siv trim, kev npaj lub rooj zaum (DBB lossis DIB-2), qhov kawg kev sib txuas, nruab nrab, tsim qhov kub thiab txias, txoj kev ua haujlwm, kom muaj nuj nqis thiab cov ntaub ntawv xav tau (datasheet, ITP, MTC, NDE).
Cov ntawv pov thawj thiab cov ntawv xeem tau muab dab tsi?
Txhua lub valve yog muab nrog EN 10204 3.1 MTC, hydrostatic plhaub thiab cov ntaub ntawv kuaj lub rooj rau API 6D thiab ISO 5208 Rate A, thiab cov ntaub ntawv pleev xim / ntim khoom. Thib peb-kev soj ntsuam tog (SGS, TUV, BV) thiab qhov project ITP muaj nyob rau ntawm kev thov.
MOQ yog dab tsi, lub sijhawm ua haujlwm thiab warranty?
MOQ pib los ntawm 1 daim rau tus qauv tsim; qhov project xaj yog muab tso rau ib daim ntawv teev cov ntaub ntawv. Lub sij hawm txhuas txhuas yog 4-8 lub lis piam nyob ntawm cov khoom thiab qhov loj me. Lub warranty yog 18 lub hlis los ntawm kev xa khoom lossis 12 lub hlis los ntawm commissioning, qhov twg los ua ntej.
Koj puas tuaj yeem muab OEM thiab qaub-kev pabcuam (NACE) versions?
Yog lawm. Private-label (OEM) muab nrog koj daim ntawv teev npe thiab ntim khoom muaj. Rau cov kev pabcuam H2S, lub cev thiab cov khoom siv tau muab rau NACE MR0175 / ISO 15156 nrog kev tswj xyuas tawv thiab CRA overlays ntawm lub ntsej muag ntub dej.
Puas yog DBB pob valve xav tau cov kab noj hniav sab nraud?
Tus qauv DBB nrog SPE lub rooj zaum tus kheej -relieves kab noj hniav overpressure rau kab, uas API 6D xav tau. Tsuas yog DIB configurations nrog DPE cov rooj zaum xav tau ib qho kev pab cuam sab nraud. Kev qhia txog kev npaj lub rooj zaum yog thawj kauj ruam hauv ib qho kev txiav txim DBB.
API 6D piv rau API 608 - tus qauv twg siv?
API 6D npog cov raj xa dej; API 608 npog cov txheej txheem- cog hlau pob li qub. Tus ciam teb yog thawj qhov kev cais tawm ntawm cov nroj tsuag roj teeb txwv. Thaum cov ntaub ntawv hais txog ob qho tib si, qhov project specification tswj.