High Pressure Valve Hom: Daim Ntawv Qhia Kev Xaiv Ua tiav

1. Dab tsi suav ua "High Pressure" Valve?

Nyob rau hauv cov txheej txheem thiab cov kav dej industries, "high pressure" yog txhais los ntawm chav kawm siab, tsis yog los ntawm ib tus lej. Cov kev sib cog lus kev lag luam feem ntau yog qhov siab - kev pabcuam siab pib ntawmASME Chav Kawm 600(nominal siab PN100, txog 10 MPa ntawm ambient) thiab txuas mus rau Chav Kawm 900, 1500 thiab 2500 (li 42 MPa ntawm ambient rau Chav Kawm 2500 flanged li qub). Rau cov kav dej roj thiab roj, API 6D li qub tau muab rau hauv Chav Kawm 150–2500, thiab Chav Kawm 600+ yog hom lus txhua hnub ntawm siab - lub luag haujlwm siab. Tshaj li cov txheej txheem hauv chav kawm - piv txwv li, cov khoom siv hauv lub taub hau thiab dej hiav txwv - siab ntawm 42 MPa (15,000 psi) thiab saum toj no yog ua raws li API 6A lossis cov qauv khoom zoo sib xws. Thaum koj sau cov lus nug, nco ntsoov hais cov chav kawm siab thiab tsim qhov kub thiab txias ua ke, vim tias qhov kev tso cai ua haujlwm siab ntawm lub valve poob thaum qhov kub nce siab (ib ASME B16.34 siab- qhov ntsuas kub). Kab lus no suav nrog cov tsev neeg lub ntsiab valve siv los ntawm Chav Kawm 600 txog.

2. Pob Valves: Cov neeg ua haujlwm siab -Nyob rau hauv / tawm lub luag haujlwm

Lub trunnion-mounted pob valve yog qhov kev xaiv tseem ceeb rau kev sib cais siab hauv cov roj, roj thiab tshuaj lom neeg. Nyob rau hauv ib tug trunnion tsim lub pob yog tuav los ntawm sab sauv thiab sab ncej, yog li lub rooj zaum load los ntawm lub caij nplooj ntoos hlav preload thiab kab siab yog tswj los ntawm lub trunnion bearings - qhov no ua hauj lwm torque ruaj khov thiab sealing kwv yees nyob rau hauv chav kawm ntawv 600-2500. Tsim raws li API 6D, nrog hluav taws kub-kev nyab xeeb kev tsim kho rau API 607 ​​lossis API 6FA, tiv thaiv- kev sib txuas zoo li qub, thiab tshuab hluav taws xob{11}} pov thawj stems rau hydrocarbon lub luag haujlwm. Cov rooj zaum mos (PTFE/RPTFE/PEEK) muab npuas- nruj kaw hauv lawv qhov kub thiab txias; cov rooj zaum hlau txuas mus rau qhov kub thiab txias thiab cov xov xwm erosive nrog cov chav kawm uas tau hais tseg. Muab ob npaug - thaiv-thiab- ntshav thiab ob npaug- kev cais tawm yog muaj rau kev cais tawm. Rau kev pabcuam automated, tus actuator (pneumatic lossis hluav taws xob) yog mounted rau ISO 5211 thiab loj nrog 1.3–1.5 × torque margin.

3. Rooj vag Valves thiab Globe Valves

Rooj vag li qubmuab qis- siab- tso kev sib cais nyob rau hauv siab - cov kab siab: cov kab sib txuas lossis cov kab sib txuas ua ke txav mus rau qhov txuas mus rau qhov ntws thiab tag nrho cov bore nyob twj ywm qhib, uas ua rau lawv zoo tagnrho rau ntau zaus - qhib / puv- nyob ze qhov kev pab cuam qhov twg siab poob teeb meem. Lub rooj vag qhov rooj (API 600 rau bolted-bonnet steel rooj vag li qub) muab kev ruaj ntseg sealing rau feem ntau cov dej num; parallel-disc designs suits high temperature thiab thermal cycling. Lub rooj vag valve qhov tsis muaj zog yog throttling - ib nrab qhib erodes lub rooj zaum thiab disc, yog li lub rooj vag li qub yuav tsum tau txiav txim siab nruj me ntsis rau / tawm cov khoom siv.Globe li qubyog qhov opposite: lawv linear - suab disc throttles precisely nrog tsawg lub rooj yaig thiab zoo heev shutoff, nyob rau hauv tus nqi ntawm kev khiav hauj lwm ntau dua. Siab - lub ntiaj teb siab li qub (API 623 rau bolted-bonnet steel globe li qub, lossis ASME B16.34 tsim) tau teev tseg rau kev tswj, ntws thiab qhov cua, thiab nrog pneumatic lossis hluav taws xob actuators lawv tsim lub hauv paus ntawm ntau qhov chaw tswj hwm.

4. Tshawb xyuas Valves, Npauj Npaim li qub thiab kev nyab xeeb li qub

Kuaj li qubtiv thaiv siab - lub zog siab los ntawm kev thim rov qab thiab ua rau muaj kev puas tsuaj loj heev. Lub viav vias kos li qub (ib API 6D rau kev pabcuam kav dej, lub ntsej muag - mus rau - ntsej muag rau API 594) haum rau cov kua dej huv ntawm qhov nrawm nrawm; dual-phaj (wafer) check li qub rau API 594 muab lub ntsej muag luv luv-rau- ntsej muag thiab qhov hnyav; tilting{10}}disc thiab nozzle (axial) kos li qub tau teev tseg qhov twg slamming yuav tsum tau txo qis hauv compressor thiab twj tso kua mis kev pab cuam. Txhua yam yog plhaub- kuaj ntawm 1.5 × ntsuas siab thiab lub rooj zaum- kuaj ntawm 1.1 × ib API 598.Npauj npaim li qubnyob rau hauv siab-lub luag hauj lwm siab txhais tau tias eccentric designs - ob thiab triple offset hlau- zaum hom, uas foob hlau- rau- hlau yam tsis rub thiab yog siv rau loj - txoj kab uas hla gas, chav thiab abrasive kev pab cuam qhov twg lub pob valve yuav loj dua.Kev nyab xeeb thiab nyem li qubyog cov kab kawg ntawm kev tiv thaiv: lawv qhib tau thaum lub zog siab tshaj, tawm mus txog rau thaum lub siab poob qis hauv qab qhov chaw reseat. Tsim raws li ASME Boiler thiab Pressure Vessel Code Tshooj VIII rau cov hlab ntsha siab, nrog API 526 (flanged steel kev nyab xeeb nyem li qub) thiab API 527 (lub rooj nruj) raws li kev txhawb nqa cov ntaub ntawv - sizing thiab teeb tsa- kev ntsuas siab yuav tsum tau ua los ntawm tus kws tsim khoom tsim nyog.

5. Kev sib piv Matrix thiab cov npe xaiv

Daim ntawv teev npe xaiv: (1) txhais lub luag haujlwm - kev rho tawm, throttling, backflow lossis overpressure tiv thaiv; (2) txhais lub siab tsim thiab qhov kub thiab txias thiab nyeem qhov tso cai siab los ntawm ASME B16.34; (3) phim cov khoom siv rau kev tshaj tawm (WCB rau dav, CF8M / 316L rau corrosive, duplex rau chlorides, alloy steels rau hydrogen); (4) qhia qhov kawg kev sib txuas (ASME B16.5/B16.47 flanges lossis weld xaus) thiab ntsej muag - mus rau - ntsej muag (ASME B16.10); (5) txhais cov kev xeem rau API 598 (los yog API 6D rau cov raj xa dej) thiab ib qho kev ntsuam xyuas tshwj xeeb (hluav taws- nyab xeeb, cryogenic, siab- roj cua siab); (6) qhov loj ntawm tus actuator nrog torque margin thiab qhia tsis ua haujlwm.

6. FAQ

Thov ib daim Quote Tau Txais Cov Khoom Siv Siab Siab Valve

Chav kawm 600–2500 pob, rooj vag, lub ntiaj teb, kos thiab npauj npaim li qub nrog API 598 daim ntawv pov thawj xeem - nug peb cov npe.