Oloa
SDV valve (Ta'u i lalo Valve)
✧ Fa'amatalaga
O le SDV valve (Shut Down Valve) o se valve e iai le avanoa e foliga V i le tasi itu o le afa-polo ta'avale. E ala i le fetuunaʻi o le tatalaina o le taʻavale, o le vaega faʻasolosolo o le vaeluagalemu e suia e fetuunai ai le tafe. E mafai foʻi ona faʻaaogaina mo le faʻaogaina o suiga e iloa ai le tatalaina poʻo le tapunia o le paipa. O loʻo i ai se faʻamamāina o le tagata lava ia, e mafai ona ausia le fetuutuunaiga o le tafe laʻititi i le laʻititi laʻititi laʻititi, fetuutuunai fua faʻatatau e tele, talafeagai mo fiber, vaega lelei, faʻasalalauga slurry.
O le vaega tatala ma tapuni o le V-type ball valve o se siʻosiʻomaga ma se ala lapotopoto, ma o le hemispheres e lua e fesoʻotaʻi ma se faʻamau ma liliu 90 ° e ausia ai le faʻamoemoe o le tatalaina ma le tapunia.
E faʻaaogaina lautele i le faʻaogaina otometi faiga o suauʻu, alamanuia vailaʻau ma isi.
✧ Parameter o Valve Polo Valve Fa'ato'a Uila Ulufale Itu
| Oloa | SDV valve (Ta'u i lalo Valve) (V port) |
| Nominal diameter | NPS 2”, 3”, 4”, 6”, 8”, 10”, 12”, 14”, 16”, 20” |
| Nominal diameter | Vasega 150, 300, 600, 900, 1500, 2500. |
| Fa'ai'u So'oga | Flanged (RF, RTJ), BW, PE |
| Fa'agaioiga | Leve, Worm Gear, Fa'a'a'au Fa'ato'a, Pneumatic Actuator, Eletise Actuator |
| Meafaitino | Tu'u: A216 WCB, A351 CF3, CF8, CF3M, CF8M, A352 LCB, LCC, LC2, A995 4A. 5A, Inconel, Hastelloy, Monel |
| Fauga | Po'o tumu po'o le fa'aitiitia, RF, RTJ, BW poʻo PE, Ulufale pito, ulu pito i luga, poʻo le faʻailoga tino Poloka Faalua & Toto (DBB), Tu'ufua Faalua & Toto (DIB) Nofo fa'alavelave fa'afuase'i ma tui o'a Meafaigaluega Anti-Static |
| Fuafuaga ma le Faumea | API 6D, API 608, ISO 17292 |
| Faafesaga'i | API 6D, ASME B16.10 |
| Fa'ai'u So'oga | BW (ASME B16.25) |
| MSS SP-44 | |
| RF, RTJ (ASME B16.5, ASME B16.47) | |
| Su'ega ma Asiasiga | API 6D, API 598 |
| Isi | NACE MR-0175, NACE MR-0103, ISO 15848 |
| E avanoa foi mo | PT, UT, RT, MT. |
| Fuafuaga saogalemu mo afi | API 6FA, API 607 |
✧ Fa'ailoga o le SDV valve (Tapuni Valve) (V port)
1. o le vai tetee e laʻititi, o le tafega e tele, o le fua faatatau fetuutuunai e maualuga. E mafai ona oʻo i le: 100: 1, lea e sili atu le tele nai lo le fetuutuunai fua o le saʻo nofoa tasi nofoa faʻatonutonu valve, lua nofoa faʻatonutonu valve ma lima faʻatonutonu valve. O ona uiga tafe e tusa ma le pasene tutusa.
2. faamaufaailoga faatuatuaina. O le leakage vasega o le fausaga faʻamaufaʻailoga malo uamea o Vasega IV o GB / T4213 "Pneumatic Control Valve". O le togi lega o le fausaga faʻamaufaʻailoga vaivai o le Vasega V poʻo le Vasega VI o le GB / T4213. Mo faʻamaufaʻailoga faʻamaufaʻailogaina, e mafai ona faia le faʻamaufaʻailogaina o le polo i luga o le chromium maʻaʻa, faʻapipiʻiina o le cobalt faʻavae sima carbide, faʻafefeteina tungsten carbide faʻaofuofu faʻafefete, ma isi, e faʻaleleia ai le ola tautua o le faʻamaufaʻailoga autu valve.
3. tatala ma tapuni vave. V-ituaiga polo valve o se valve stroke angular, mai le tatala atoatoa i le tapuni atoa spool Angle 90 °, faʻapipiʻiina i le AT piston pneumatic actuator e mafai ona faʻaaogaina mo tulaga vave tipi. A maeʻa ona faʻapipiʻi le eletise eletise eletise, e mafai ona fetuunai e tusa ai ma le fua faʻatatau analog 4-20Ma.
4. lelei poloka faatinoga. O le ta'amilosaga e fa'aogaina le 1/4 fa'atusa fa'atasi ma le fa'atulagaina o nofoa fa'atasi. A iai ni mea'ai malo i totonu o le alalaupapa, o le poloka poloka o le a le tupu e pei o alatoto polo O-ituaiga masani. E leai se va i le va o le polo V-foliga ma le nofoa, o loʻo i ai le malosi tele o le sele, aemaise lava mo le faʻatonutonuina o le faʻamalolo ma mea faʻamalosi e iai alava poʻo ni mea laiti malo. E le gata i lea, o loʻo i ai ni vaʻa polo V-foliga faʻatasi ma le faʻaogaina o le lalolagi, lea e sili atu ona talafeagai mo tulaga maualuga o le mamafa ma mafai ona faʻaitiitia lelei le faʻaleagaina o le polo pe a faia le eseesega maualuga. E faʻaaogaina le faʻamaufaʻailoga nofoa tasi poʻo le faʻamaufaʻailoga nofoa faʻalua. O le V-foliga polo valve faʻatasi ai ma le faʻamaufaʻailoga nofoa lua e masani ona faʻaaogaina mo le faʻatonutonuina o le tafe mama, ma o le ala faʻatasi ma mea iti e mafai ona mafua ai le lamatiaga o le poloka o le ogatotonu.
5. V-ituaiga polo valve o se fausaga polo tumau, o le nofoa e utaina i le tautotogo, ma e mafai ona alu i luga o le ala tafe. E mafai ona totogi otometi le ofuina o le spool, fa'aumiumi le ola tautua. O le tautotogo ei ai le vaipuna hexagonal, vaipuna galu, vaipuna tisiketi, puna compression cylindrical ma isi. Pe a iai ni mea leaga laiti o le alalaupapa, e tatau ona faʻapipiʻi mama faʻamaufaʻailoga i le puna e puipuia ai mai mea leaga. Mo nofoa fa'amaufa'ailoga va'ava'a V-polo va'a va'ava'a lua, o lo'o fa'aogaina le fausaga o polo opeopea.
6. pe a iai le afi ma le anti-static manaʻoga, o le valve core e faia i le fausaga faʻamaufaʻailoga malo uʻamea, o le faʻatumu e faia i le graphite fetuutuunai ma isi mea e faʻafefeteina le vevela maualuga, ma o le valve o loʻo i ai se tauau faʻamau. Fa'atino faiga fa'aeletonika i le va o le tino o le valve, le 'au ma le si'osi'omaga. Faʻatasi ma GB / T26479 fausaga faʻafefe afi ma GB / T12237 manaʻoga antistatic.
7. V-foliga polo valve e tusa ai ma le fausaga faʻamaufaʻailoga eseese o le polo polo, o loʻo i ai le faʻaogaina o le faʻaogaina o le leai o se mea, o le faʻaogaina o le tasi, le faʻaogaina o le faʻaluaina o le faʻailoga, le faʻaogaina o le tolu o le fausaga. O le fausaga masani e fa'aaogaina e leai se fa'alavelave. O le fausaga faʻapitoa e mafai ona vave faʻasaʻo le spool mai le nofoa pe a tatalaina, faʻaitiitia le ofuina o le mama faʻamaufaʻailoga ma faʻalauteleina le ola tautua. A tapunia, e mafai ona fa'atupuina se malosi fa'apitoa e fa'aleleia ai le fa'amaufa'ailoga.
8. O le faʻataʻavaleina o le V-type ball valve o loʻo i ai le ituaiga au, tuʻuina atu o le anufe, pneumatic, eletise, hydraulic, electro-hydraulic linkage ma isi auala faʻataʻavale.
9.V-ituaiga polo valve fesoʻotaʻiga o loʻo i ai le fesoʻotaʻiga flange ma le pipii fesoʻotaʻiga i auala e lua, mo le faʻaogaina o le lalolagi, faʻamaufaʻailoga nofoa faʻalua faʻamaufaʻailoga ma fesoʻotaʻiga filo ma le socket uelo, faʻamau ma isi auala fesoʻotaʻiga.
10.ceramic polo valve foi V-foliga polo fausaga autu. Lelei faʻaofuofu teteʻe, ae faʻapea foʻi acid ma alkali corrosion teteʻe, sili atu ona talafeagai mo le pulea o faasalalauga granular. E iai fo'i le va'a polo o lo'o fa'apipi'iina i le fluorine e iai fo'i le fausaga autu o le polo fa'atusa V, lea e fa'aaogaina mo le fa'atonutonuina ma le fa'atonutonuina o fa'asalalauga fa'a'ala'au oona ma alkali. O le faʻaogaina o le V-type ball valve e sili atu ma sili atu le lautele.
✧ Auaunaga Pe a uma ona Fa'atau
O le tautua ina ua maeʻa faʻatau atu o le SDV valve (Shut Down Valve) (V port) e taua tele, aua e naʻo le taimi ma le lelei o le faʻatau atu auaunaga e mafai ona faʻamautinoa ai lona taimi umi ma le mautu. O mea nei o lo'o i totonu o auaunaga pe a uma ona fa'atau atu o nisi o valve polo opeopea:
1.Installation ma le faʻatonuina: O le a alu le aufaigaluega a le auʻaunaga i le nofoaga e faʻapipiʻi ma faʻapipiʻi le valve polo opeopea e faʻamautinoa ai lona mautu ma le masani.
2. Maintenance: Faʻaauau pea le faʻafefe o le polo valve ina ia mautinoa o loʻo i ai i le tulaga sili ona lelei o galuega ma faʻaitiitia le fua o le toilalo.
3.Troubleshooting: Afai e le manuia le valve o le polo opeopea, o le a faia e le aufaipisinisi pe a maeʻa le faʻatau atu le faʻafitauli i luga ole laiga i se taimi sili ona puupuu e faʻamautinoa ai lona faʻagaioiga masani.
4. Faʻafouina o oloa ma faʻaleleia: I le tali atu i mea fou ma tekonolosi fou o loʻo faʻaalia i le maketi, o le a vave ona fautuaina e le auʻaunaga faʻatau atu le faʻafouina ma le faʻaleleia o fofo i tagata faʻatau e tuʻuina atu ia i latou oloa sili atu valve.
5. Aʻoaʻoga faʻapitoa: O le a tuʻuina atu e le aufaigaluega a le auʻaunaga faʻatau atu aʻoaʻoga malamalama valve i tagata faʻaoga e faʻaleleia ai le tulaga o le pulega ma le tausiga o tagata faʻaoga e faʻaaoga ai valve polo opeopea. I se faapuupuuga, o le tautua ina ua uma ona faatau atu o le valve polo opeopea e tatau ona mautinoa i itu uma. E na'o le auala lea e mafai ai ona maua e tagata fa'aoga se poto masani sili atu ma fa'atau le saogalemu.
