Zogulitsa
Vavu ya SDV (Shut Down Valve)
✧ Kufotokozera
Vavu ya SDV (Shut Down Valve) ndi valavu yokhala ndi mawonekedwe a V kumbali imodzi ya spool ya theka la mpira. Mwa kukonza kutsegulira kwa spool, gawo lapakati lapakati lapakati limasinthidwa kuti lisinthe kayendedwe kake. Itha kugwiritsidwanso ntchito pakuwongolera kusintha kuti muzindikire kutsegulira kapena kutseka kwa payipi. Imakhala ndi zodzitchinjiriza zodzitchinjiriza, zimatha kukwaniritsa kusintha kwazing'ono mumayendedwe ang'onoang'ono otsegulira, chiŵerengero chosinthika ndi chachikulu, choyenera fiber, tinthu tating'onoting'ono, slurry media.
Kutsegula ndi kutseka kwa valve ya V-mtundu wa mpira ndi gawo lomwe lili ndi njira yozungulira, ndipo ma hemispheres awiri amagwirizanitsidwa ndi bolt ndi kuzungulira 90 ° kuti akwaniritse cholinga chotsegula ndi kutseka.
Amagwiritsidwa ntchito kwambiri pamakina owongolera amafuta, makampani opanga mankhwala ndi zina zotero.
✧ Magawo Olowera M'mbali mwa Welded Ball Valves
| Zogulitsa | Vavu ya SDV (Shut Down Valve) (V port) |
| M'mimba mwake mwadzina | NPS 2 ", 3", 4", 6", 8", 10", 12", 14", 16", 20" |
| M'mimba mwake mwadzina | Kalasi 150, 300, 600, 900, 1500, 2500. |
| Malizani Kulumikizana | Flanged (RF, RTJ), BW, PE |
| Ntchito | Lever, Worm Gear, Bare Stem, Pneumatic Actuator, Electric Actuator |
| Zipangizo | Kuponya: A216 WCB, A351 CF3, CF8, CF3M, CF8M, A352 LCB, LCC, LC2, A995 4A. 5A, Inconel, Hastelloy, Monel |
| Kapangidwe | Kutopa kwathunthu kapena kuchepetsedwa, RF, RTJ, BW kapena PE, Kulowa m'mbali, kulowa pamwamba, kapena kapangidwe ka thupi ka welded Kutsekereza Pawiri & Kutaya Magazi (DBB), Kudzipatula Kawiri & Kutuluka Magazi (DIB) Mpando wadzidzidzi ndi jekeseni wa tsinde Anti-Static Chipangizo |
| Wopanga ndi Wopanga | API 6D, API 608, ISO 17292 |
| Maso ndi Maso | API 6D, ASME B16.10 |
| Malizani Kulumikizana | BW (ASME B16.25) |
| MSS SP-44 | |
| RF, RTJ (ASME B16.5, ASME B16.47) | |
| Kuyesa ndi Kuyendera | API 6D, API 598 |
| Zina | NACE MR-0175, NACE MR-0103, ISO 15848 |
| Komanso kupezeka pa | PT, UT, RT, MT. |
| Kukonzekera kwachitetezo chamoto | API 6FA, API 607 |
✧ Mawonekedwe a valavu ya SDV (Shut Down Valve) (V doko)
1. kukana kwamadzimadzi kumakhala kochepa, kokwanira koyenda ndi kwakukulu, chiŵerengero chosinthika ndichokwera. Itha kufikira: 100: 1, yomwe ndi yayikulu kwambiri kuposa chiŵerengero chosinthika cha valavu yowongoka yampando umodzi, valavu yoyendetsera mipando iwiri ndi valavu yowongolera manja. Mayendedwe ake ndi pafupifupi ofanana peresenti.
2. kusindikiza kodalirika. Gawo lotayikira la chitsulo chosindikizira cholimba ndi Gulu IV la GB/T4213 "Pneumatic Control Valve". Gawo lotayikira lachisindikizo chofewa ndi Gulu V kapena Gulu VI la GB/T4213. Pamapangidwe osindikiza olimba, malo osindikizira a mpirawo amatha kupangidwa ndi plating yolimba ya chromium, pamwamba pa cobalt yopangidwa ndi simenti ya carbide, kupopera mbewu mankhwalawa tungsten carbide kuvala zosagwira zokutira, ndi zina zambiri, kuti apititse patsogolo moyo wautumiki wa chisindikizo chapakati.
3. Tsegulani ndi kutseka mwamsanga. V-mtundu wa mpira valavu ndi angular sitiroko valavu, kuchokera lotseguka kwathunthu kutsekedwa kwathunthu spool Angle 90 °, okonzeka ndi AT piston pneumatic actuator angagwiritsidwe ntchito zinthu mofulumira kudula. Mukayika choyika chamagetsi chamagetsi, chimatha kusinthidwa molingana ndi chiŵerengero cha analogi 4-20Ma.
4. ntchito yabwino yotsekereza. Spool imatengera mawonekedwe a 1/4 a hemispherical okhala ndi mipando ya unilateral. Pakakhala tinthu tolimba mkatikati, kutsekeka kwa patsekeke sikungachitike ngati mavavu wamba amtundu wa O. Palibe kusiyana pakati pa mpira wooneka ngati V ndi mpando, womwe uli ndi mphamvu yaikulu yometa ubweya, makamaka yoyenera kulamulira kuyimitsidwa ndi tinthu tating'ono tomwe timakhala ndi fiber kapena tinthu tating'ono tolimba. Kuonjezera apo, pali ma valve opangidwa ndi V okhala ndi spool yapadziko lonse, omwe ali oyenerera kwambiri kupanikizika kwambiri ndipo amatha kuchepetsa kusinthika kwapakati pa mpira pamene kusiyana kwakukulu kumapangidwa. Imatengera kusindikiza mpando umodzi kapena kusindikiza mipando iwiri. Valavu yampira yooneka ngati V yokhala ndi chisindikizo chapampando wapawiri imagwiritsidwa ntchito kwambiri pakuwongolera kayendedwe ka sing'anga, ndipo sing'anga yokhala ndi tinthu tating'onoting'ono imatha kuyambitsa ngozi yotseka pakatikati.
5. Valavu ya mpira wa V-mtundu ndi mawonekedwe a mpira wokhazikika, mpando umadzazidwa ndi kasupe, ndipo ukhoza kuyenda panjira yoyenda. Itha kubweza basi kuvala kwa spool, kutalikitsa moyo wautumiki. Kasupe ali ndi hexagonal kasupe, wave kasupe, chimbale kasupe, cylindrical compression kasupe ndi zina zotero. Pamene sing'anga ili ndi zonyansa zazing'ono, ndizofunikira kuwonjezera mphete zosindikizira ku kasupe kuti zitetezedwe ku zonyansa. Pamipando iwiri yosindikizidwa padziko lonse lapansi spool V-mpira mavavu, mawonekedwe a mpira woyandama amagwiritsidwa ntchito.
6. pakakhala zofunikira zamoto ndi zotsutsana ndi ma static, pachimake cha valve chimapangidwa ndi chitsulo chosindikizira cholimba, chodzaza ndi ma graphite osinthika ndi zida zina zolimbana ndi kutentha kwambiri, ndipo tsinde la valve limakhala ndi phewa losindikiza. Tengani ma electrostatic conduction miyeso pakati pa ma valve, tsinde ndi gawo. Tsatirani GB/T26479 zosagwira moto ndi GB/T12237 zofunika antistatic.
7. Valavu ya mpira yofanana ndi V malinga ndi mawonekedwe osindikizira osiyanasiyana apachimake cha mpira, pali zero eccentric structure, single eccentric structure, double eccentric structure, three eccentric structure. Zomwe zimagwiritsidwa ntchito kwambiri ndi zero eccentric. Mapangidwe a eccentric amatha kumasula mwamsanga spool pampando pamene atsegulidwa, kuchepetsa kuvala kwa mphete yosindikizira ndikuwonjezera moyo wautumiki. Ikatsekedwa, mphamvu ya eccentric imatha kupangidwa kuti ilimbikitse kusindikiza.
8. Njira yoyendetsera galimoto ya V-mtundu wa valavu ya mpira imakhala ndi mtundu wa chogwirira, kufalitsa zida za nyongolotsi, pneumatic, magetsi, hydraulic, electro-hydraulic linkage ndi njira zina zoyendetsera galimoto.
9.V-mtundu mpira valavu kugwirizana ali flange kugwirizana ndi achepetsa kugwirizana njira ziwiri, kwa spool lonse, pawiri mpando kusindikiza dongosolo ndi ulusi kugwirizana ndi kuwotcherera zitsulo, matako kuwotcherera ndi njira zina kugwirizana.
Vavu ya 10.ceramic mpira ilinso ndi mawonekedwe a V-woboola pakati. Good kuvala kukana, komanso asidi ndi alkali dzimbiri kukana, oyenera kulamulira granular media. Valavu ya mpira wa fluorine ilinso ndi mawonekedwe a V-woboola pakati pa mpira, omwe amagwiritsidwa ntchito poyang'anira ndi kuwongolera ma acid ndi alkali media corrosive media. Mitundu yogwiritsira ntchito V-mtundu wa valavu ya mpira ndiyochulukirachulukira.
✧ Pambuyo-Kugulitsa Service
Ntchito yogulitsa pambuyo pogulitsa valve ya SDV (Shut Down Valve) (V doko) ndiyofunika kwambiri, chifukwa ntchito yokhayo yokhazikika komanso yogwira ntchito pambuyo pogulitsa ikhoza kuonetsetsa kuti ntchito yake yayitali komanso yokhazikika. Zotsatirazi ndi zomwe zili mkati mwa ntchito zogulitsa pambuyo pa mavavu ena oyandama a mpira:
1.Kuyika ndi kutumiza: Ogwira ntchito pambuyo pa malonda adzapita kumaloko kukayika ndi kukonza valve yoyandama ya mpira kuti atsimikizire kuti ikugwira ntchito mokhazikika komanso yokhazikika.
2.Maintenance: Nthawi zonse sungani valavu ya mpira yoyandama kuti muwonetsetse kuti ili bwino kwambiri ndikuchepetsa kulephera.
3.Kuthetsa mavuto: Ngati valavu yoyandama ya mpira ikulephera, ogwira ntchito pambuyo pa malonda adzachitapo kanthu pa nthawi yaifupi kwambiri kuti atsimikizire kugwira ntchito kwake.
4.Kusintha kwazinthu ndi kukonzanso: Poyankha zipangizo zatsopano ndi matekinoloje atsopano omwe akubwera pamsika, ogwira ntchito pambuyo pa malonda adzalimbikitsa mwamsanga kukonzanso ndi kukonzanso njira zothetsera makasitomala kuti awapatse mankhwala abwino a valve.
5. Maphunziro a chidziwitso: Ogwira ntchito pambuyo pa malonda adzapereka maphunziro a chidziwitso cha valve kwa ogwiritsa ntchito kuti apititse patsogolo kasamalidwe ndi kasamalidwe ka ogwiritsa ntchito pogwiritsa ntchito ma valve oyandama. Mwachidule, ntchito yogulitsa pambuyo pa valve yoyandama iyenera kutsimikiziridwa mbali zonse. Ndi njira iyi yokha yomwe ingabweretsere ogwiritsa ntchito bwino ndikugula chitetezo.
