Cov khoom
SDV valve (Lub kaw lus kaw)
✧ Nqe lus piav qhia
SDV valve (Shut Down Valve) yog lub valve nrog V-shaped qhib ntawm ib sab ntawm ib nrab pob spool. Los ntawm kev kho qhov qhib ntawm lub spool, qhov chaw hla ntu ntawm qhov nruab nrab ntws yog hloov kho qhov ntws. Nws kuj tuaj yeem siv rau kev hloov pauv kom paub qhov qhib lossis kaw ntawm cov kav dej. Nws muaj cov nyhuv tu tus kheej, tuaj yeem ua tiav qhov kev hloov pauv me me hauv qhov qhib me me, qhov hloov pauv tau loj, haum rau fiber ntau, cov khoom zoo, slurry media.
Qhov qhib thiab kaw ib feem ntawm V-hom pob valve yog tus kheej kheej nrog lub voj voog, thiab ob lub hemispheres txuas nrog lub ntsia liaj qhov rooj thiab tig 90 ° kom ua tiav lub hom phiaj qhib thiab kaw.
Nws yog dav siv hauv kev tswj tsis siv neeg ntawm roj av, tshuaj lom neeg kev lag luam thiab lwm yam.
✧ Parameters ntawm Siab Welded Pob Valves Sab Nkag
| Khoom | SDV valve (Shut Down Valve) (V chaw nres nkoj) |
| Nominal txoj kab uas hla | NPS 2", 3", 4", 6", 8", 10", 12", 14", 16", 20" |
| Nominal txoj kab uas hla | Chav Kawm 150, 300, 600, 900, 1500, 2500. |
| Xaus kev sib txuas | Flanged (RF, RTJ), BW, PE |
| Kev ua haujlwm | Lever, Worm Iav, Bare Stem, Pneumatic Actuator, Fais Actuator |
| Khoom siv | Casting: A216 WCB, A351 CF3, CF8, CF3M, CF8M, A352 LCB, LCC, LC2, A995 4A. 5A, Inconel, Hastelloy, Monel |
| Qauv | Tag Nrho lossis Txo Qhov Ncauj, RF, RTJ, BW lossis PE, Sab nkag, sab saum toj nkag, lossis welded lub cev tsim Ob chav thaiv & Bleed (DBB), Ob chav cais & Bleed (DIB) Lub rooj zaum thaum muaj xwm ceev thiab qia txhaj Anti-static ntaus ntawv |
| Tsim thiab Chaw Tsim Khoom | API 6D, API 608, ISO 17292 |
| Ntsej muag ntsej muag | API 6D, ASME B16.10 |
| Xaus kev sib txuas | BW (ASME B16.25) |
| Qauv TSIS MUAJ: SP-44 | |
| RF, RTJ (ASME B16.5, ASME B16.47) | |
| Kev kuaj thiab tshuaj xyuas | API 6D, API 598 |
| Lwm yam | NACE MR-0175, NACE MR-0103, ISO 15848 |
| Kuj muaj nyob rau | PT, UT, RT, UA. |
| Hluav taws xob zoo tsim | API 6FA, API 607 |
✧ Nta ntawm SDV valve (Shut Down Valve) (V chaw nres nkoj)
1. cov kua kuj yog me me, cov dej coefficient yog loj, qhov adjustable ratio yog siab. Nws tuaj yeem ncav cuag : 100: 1, uas yog qhov loj dua li qhov hloov tau ntawm qhov ncaj ib lub rooj tswj lub valve, ob lub rooj tswj lub valve thiab lub tes tsho regulating valve. Nws cov yam ntxwv ntws yog kwv yees li qhov sib npaug feem pua.
2. txhim khu kev qha sealing. Cov qib to ntawm cov hlau nyuaj foob qauv yog Chav Kawm IV ntawm GB / T4213 "Pneumatic Control Valve". Cov qib xau ntawm cov qauv muag muag yog Class V lossis Class VI ntawm GB / T4213. Rau cov txheej txheem nyuaj sealing, lub pob core sealing nto tuaj yeem ua los ntawm cov tawv chromium plating, surfacing cobalt raws li cemented carbide, txau tungsten carbide hnav-resistant txheej, thiab lwm yam, los txhim kho lub neej kev pab cuam ntawm lub valve tub ntxhais foob.
3. qhib thiab kaw sai. V-hom pob valve yog lub angular stroke valve, los ntawm tag nrho qhib rau tag nrho kaw spool Angle 90 °, nruab nrog AT piston pneumatic actuator tuaj yeem siv rau kev txiav ceev. Tom qab txhim kho lub qhov hluav taws xob valve positioner, nws tuaj yeem hloov kho raws li qhov sib piv ntawm analog teeb liab 4-20Ma.
4. zoo thaiv kev ua haujlwm. Lub spool txais 1/4 hemispherical zoo nrog lub rooj zaum unilateral. Thaum muaj cov khoom hauv nruab nrab, cov kab noj hniav thaiv yuav tsis tshwm sim zoo li O-hom pob li qub. Tsis muaj qhov sib txawv ntawm lub pob V-shaped thiab lub rooj zaum, uas muaj lub zog shear loj, tshwj xeeb tshaj yog tsim rau kev tswj kev ncua thiab cov khoom uas muaj fiber ntau lossis cov khoom me me. Tsis tas li ntawd, muaj V-shaped pob li qub nrog lub ntiaj teb spool, uas yog qhov tsim nyog rau kev kub siab thiab tuaj yeem txo qhov deformation ntawm lub pob core thaum lub siab sib txawv. Nws txais yuav ib lub rooj sib khi los yog ob lub rooj zaum sealing qauv. V-shaped pob valve nrog ob lub rooj foob feem ntau yog siv rau kev huv huv nruab nrab kev tswj hwm, thiab qhov nruab nrab nrog cov khoom tuaj yeem ua rau muaj kev phom sij ntawm kev txhaws hauv nruab nrab kab noj hniav.
5. V-hom pob valve yog cov qauv pob ruaj khov, lub rooj zaum tau ntim nrog lub caij nplooj ntoos hlav, thiab nws tuaj yeem txav mus raws txoj kev ntws. Yuav tau them nyiaj rau cov spool hnav, ncua lub neej kev pab cuam. Lub caij nplooj ntoos hlav muaj hexagonal caij nplooj ntoos hlav, yoj caij nplooj ntoos hlav, disc caij nplooj ntoos hlav, cylindrical compression caij nplooj ntoos hlav thiab lwm yam. Thaum qhov nruab nrab muaj me me impurities, nws yog ib qhov tsim nyog yuav tau ntxiv sealing rings rau lub caij nplooj ntoos hlav los tiv thaiv nws los ntawm impurities. Rau ob lub rooj sib khi thoob ntiaj teb spool V-pob li qub, lub pob ntab ntab yog siv.
6. Thaum muaj hluav taws kub thiab kev tiv thaiv zoo li qub, cov tub ntxhais valve yog ua los ntawm cov hlau tawv foob qauv, cov muab tub lim yog ua los ntawm cov graphite saj zawg zog thiab lwm cov ntaub ntawv kub resistant, thiab lub valve qia muaj lub xub pwg sealing. Siv electrostatic conduction ntsuas ntawm lub cev valve, qia thiab kheej kheej. Ua raws li GB / T26479 hluav taws-resistant qauv thiab GB / T12237 antistatic yuav tsum.
7. V-shaped pob valve raws li qhov sib txawv sealing qauv ntawm lub pob core, muaj xoom eccentric qauv, ib tug eccentric qauv, ob chav eccentric qauv, peb eccentric qauv. Cov qauv siv feem ntau yog xoom eccentric. Cov qauv eccentric tuaj yeem tso tawm sai sai ntawm lub rooj zaum thaum nws qhib, txo qhov hnav ntawm lub nplhaib foob thiab txuas lub neej kev pabcuam. Thaum kaw, lub zog eccentric tuaj yeem tsim los txhim kho cov nyhuv sealing.
8. Kev tsav tsheb ntawm V-hom pob valve muaj hom kov, cab iav kis tau tus mob, pneumatic, hluav taws xob, hydraulic, electro-hydraulic linkage thiab lwm yam kev tsav tsheb.
9.V-hom pob valve kev twb kev txuas muaj flange kev twb kev txuas thiab clamp kev twb kev txuas ob txoj kev, rau lub ntiaj teb no spool, ob chav rooj sealing qauv thiab xov kev twb kev txuas thiab lub qhov (socket) vuam, taub qab vuam thiab lwm yam kev sib txuas.
10.ceramic pob valve kuj muaj V-shaped pob core qauv. Zoo hnav tsis kam, tab sis kuj acid thiab alkali corrosion kuj, haum rau kev tswj ntawm granular media. Lub fluorine lined pob valve kuj muaj V-shaped pob core qauv, uas yog siv los tswj thiab tswj cov kua qaub thiab alkali corrosive media. Daim ntawv thov ntau yam ntawm V-hom pob valve yog ntau thiab ntau dua.
✧ Kev Pabcuam Tomqab Muag
Kev pab cuam tom qab muag ntawm SDV valve (Shut Down Valve) (V chaw nres nkoj) yog qhov tseem ceeb heev, vim tias tsuas yog raws sijhawm thiab kev pab cuam tom qab muag tau zoo tuaj yeem ua kom nws txoj haujlwm ntev thiab ruaj khov. Cov hauv qab no yog cov kev pab cuam tom qab muag ntawm qee lub pob valve:
1.Installation thiab commissioning: Tom qab-muag kev pab cuam cov neeg ua hauj lwm yuav mus rau lub site rau nruab thiab debug lub floating pob valve kom nws ruaj khov thiab ib txwm ua hauj lwm.
2.Maintenance: Tsis tu ncua tuav lub pob valve kom ntseeg tau tias nws nyob rau hauv kev ua haujlwm zoo tshaj plaws thiab txo qhov tsis ua haujlwm.
3.Troubleshooting: Yog tias lub pob valve tsis ua haujlwm, cov neeg ua haujlwm pabcuam tomqab muag yuav ua cov teebmeem ntawm qhov chaw nyob rau lub sijhawm luv tshaj plaws kom ntseeg tau tias nws ua haujlwm li qub.
4.Cov khoom hloov kho thiab hloov kho tshiab: Hauv cov lus teb rau cov khoom siv tshiab thiab cov thev naus laus zis tshiab tshwm sim hauv kev ua lag luam, cov neeg ua haujlwm pabcuam tom qab muag yuav pom zoo kom hloov kho thiab hloov kho cov kev daws teeb meem rau cov neeg siv khoom kom muab lawv cov khoom zoo dua qub.
5. Kev cob qhia kev paub: Cov neeg ua haujlwm pabcuam tomqab muag yuav muab kev cob qhia txog kev paub txog valve rau cov neeg siv txhawm rau txhim kho kev tswj hwm thiab kev saib xyuas qib ntawm cov neeg siv khoom siv pob valve. Nyob rau hauv luv luv, tom qab-muag kev pab cuam ntawm lub floating pob valve yuav tsum tau guaranteed nyob rau hauv tag nrho cov lus qhia. Tsuas yog nyob rau hauv txoj kev no nws tuaj yeem coj cov neeg siv kev paub zoo dua thiab kev yuav khoom muaj kev nyab xeeb.
